CN114133674B - A kind of chlorosulfonated polyethylene rubber and preparation method thereof - Google Patents

Abstract

The application relates to the field of rubber, and specifically discloses a chlorosulfonated polyethylene rubber and a preparation method thereof. The raw materials used for rubber include the following components by weight: 40-50 parts of chlorosulfonated polyethylene, 0.32-0.4 parts of flow agent, 8-8.4 parts of diisononyl phthalate, 35-45 parts of reinforcing filler, vulcanized 0.4-0.5 parts of accelerator, 0.7-0.74 parts of accelerator, 0.3-0.33 parts of flow aid, and 1.2-1.8 parts of dispersant. The overall uniformity of the chlorosulfonated polyethylene rubber of the present application is high, the mechanical properties are strong, the surface is flat and smooth, and the appearance is high.

Description

A kind of chlorosulfonated polyethylene rubber and preparation method thereof

technical field

The application relates to the rubber field, more specifically, it relates to a chlorosulfonated polyethylene rubber and a preparation method thereof.

Background technique

Chlorosulfonated polyethylene (CSM) is made from low-density polyethylene or high-density polyethylene through chlorination or chlorosulfonation. It is a chlorine-containing special elastomer material with a highly saturated chemical structure. Due to the chlorosulfonyl active group contained in its molecular structure, it exhibits high activity, excellent chemical medium corrosion resistance, ozone oxidation resistance, oil erosion resistance and flame retardancy, as well as weather resistance, Heat resistance, ion radiation resistance, low temperature resistance, abrasion resistance and electrical insulation, belong to high-performance special rubber varieties, and are widely used in wire and cable, waterproof membrane, automobile industry and other fields.

In order to further improve the technical performance of chlorosulfonated polyethylene rubber, reinforcing fillers are usually added during its processing. However, the reinforcing fillers currently used are usually inorganic powders. Due to the large surface energy difference between the powder and the rubber matrix, the compatibility between the powder and the rubber matrix is poor, and it is not easy to disperse in the rubber compound. Agglomeration occurs, which makes the overall uniformity of the rubber compound poor, reduces the mechanical properties of the rubber, and makes the surface of the rubber produced rough and not smooth.

Contents of the invention

In order to solve the above problems, the present application provides a chlorosulfonated polyethylene rubber and a preparation method thereof.

In the first aspect, a kind of chlorosulfonated polyethylene rubber provided by the application adopts the following technical scheme:

A kind of chlorosulfonated polyethylene rubber, raw material used comprises the component of following parts by weight:

40-50 parts of chlorosulfonated polyethylene;

Flow agent 0.32-0.4 parts;

8-8.4 parts of diisononyl phthalate;

35-45 parts of reinforcing filler;

Vulcanizing agent 0.4-0.5 part;

Accelerator 0.7-0.74 parts;

Flow aid 0.3-0.33 parts;

Dispersant 1.2-1.8 parts.

By adopting the above-mentioned technical scheme, the flow agent of the present application adopts flow agent WB222, and the flow aid adopts one of flow aid ST and flow aid AC, or mixed in any proportion. In this application, flow agent WB222, flow aid ST and flow aid AC are added to the rubber compound, which fully improves the fluidity of the compound during mixing, so that components such as reinforcing fillers can be fully dispersed in the compound. All the components in the rubber compound are mixed more evenly, which improves the overall uniformity of the rubber, reduces the possibility of uneven stress in the rubber due to uneven distribution of components such as reinforcing fillers, and thus improves the mechanical properties of the rubber. , and make the rubber surface smoother.

At the same time, this application also uses dispersant in conjunction with flow agent WB222, flow aid ST, and flow aid AC, which reduces the force between the reinforcing filler particles and improves the compatibility between the reinforcing filler and other components. Therefore, the degree of dispersion of the reinforcing filler in the rubber compound is fully improved during mixing, so that all components in the compound are mixed more uniformly, and the overall uniformity of the rubber is improved, thereby improving the mechanical properties of the rubber.

In addition, the diisononyl phthalate of the present application is used as a plasticizer to improve the plasticity and strength of the rubber, thereby improving the mechanical properties of the rubber. The vulcanizing agent of the present application adopts vulcanizing agent MC-2.

In summary, this application fully improves the mechanical properties of the rubber by adding diisononyl phthalate and reinforcing fillers to the rubber compound, and by using flow agent WB222, flow aid ST, flow aid AC Used in conjunction with a dispersant, it fully improves the dispersion of reinforcing fillers and other components in the rubber compound, making all components in the compound more evenly mixed, improving the uniformity of the rubber as a whole, thereby improving the mechanical properties of the rubber , and make the surface of the prepared rubber smoother.

Preferably, the raw material includes the following components by weight:

45 parts of chlorosulfonated polyethylene;

Flow agent 0.36 parts;

8.2 parts of diisononyl phthalate;

40 parts of reinforcing filler;

0.45 parts of vulcanizing agent;

Accelerator 0.72 parts;

0.315 parts of flow aid;

Dispersant 1.5 parts.

By adopting the above technical solution, the application further controls the usage of each component, so that the fluidity of the rubber as a whole is further improved, and all the components in the rubber are mixed more evenly, thereby further improving the uniformity of the rubber as a whole , enhance the mechanical properties of rubber.

Preferably, the dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L-12 and dispersant FL with a weight ratio of 1:(0.8-1.2):(0.04-0.06):(0.02-0.04) -100.

By adopting the above-mentioned technical scheme, this application uses the mixed and matched use of dispersant H60EF, dispersant KT-8A, dispersant L-12 and dispersant FL-100, which fully exerts the synergistic effect between each other and reduces the Viscosity improves the overall fluidity and lubricity of the compound, making the reinforcing filler and other components fully infiltrated, reducing the interfacial tension between the reinforcing filler and chlorosulfonated polyethylene and other components, making the reinforcing filler It is easier to disperse into the rubber compound, and at the same time reduces the interaction force between the particles of the reinforcing filler itself, reduces the possibility of agglomeration of the reinforcing filler, thereby improving the uniformity of mixing of the components in the compound and improving the Mechanical properties of rubber.

Preferably, the reinforcing filler includes carbon black, PW-80A, titanium dioxide and light calcium powder in a weight ratio of (0.35-2.85):(9.95-12.45):(3.75-6.25):(20.95-23.45).

By adopting the above-mentioned technical scheme, this application uses carbon black, PW-80A, titanium dioxide and light calcium powder mixed as a reinforcing filler to add to the rubber compound, which can improve the process performance of rubber, and improve the mechanical properties, heat resistance and weather resistance of rubber. Sex, color brightness and chemical stability and other properties.

Preferably, the carbon black is modified by the following method:

At a temperature of 60-65°C and a rotational speed of 250-300r/min, carbon black, water, ethanol and The coupling agent is mixed and stirred for 1.5-2.0 hours, then filtered, washed, and dried at a temperature of 100-105° C. for 4-5 hours to obtain modified carbon black.

By adopting the above-mentioned technical scheme, the present application uses a coupling agent to modify the carbon black under the above-mentioned process conditions, which reduces the difference in surface energy between carbon black and chlorosulfonated polyethylene and other components, and improves the relationship between carbon black and chlorosulfonated polyethylene. The compatibility of components such as chlorosulfonated polyethylene, thereby enhancing the dispersion ability of carbon black in the rubber compound, reducing the possibility of its agglomeration in the rubber compound, thereby improving the uniformity of the rubber and enhancing the rubber mechanical properties.

Preferably, the coupling agent is one or more of silane coupling agent KH-570, silane coupling agent Si-69 and titanate coupling agent 201.

By adopting the above-mentioned technical scheme, the present application adopts any one of silane coupling agent KH-570, silane coupling agent Si-69 and titanate coupling agent 201, or mixes them in any proportion to improve carbon black and The compatibility between other components improves the dispersion and uniformity of carbon black in the compound.

Preferably, the accelerator includes accelerator TETD and accelerator TT in a weight ratio of (0.44-0.46):(0.26-0.28).

By adopting the above technical scheme, the present application adds the accelerator TETD and the accelerator TT into the rubber compound, which can shorten the vulcanization time of the rubber compound, lower the vulcanization temperature, reduce the amount of vulcanizing agent, and improve the mechanical properties of the rubber at the same time.

In a second aspect, the application provides a method for preparing chlorosulfonated polyethylene rubber, comprising the following steps:

S1. First, banbury chlorosulfonated polyethylene at a temperature of 120-130°C for 170-190s, then add diisononyl phthalate, reinforcing filler and dispersant to continue banburying, when the temperature is 90- At 100°C, add flow agent to continue banburying, and when the temperature is 120-130°C, discharge to obtain masterbatch;

S2. Control the temperature below 70°C, mix vulcanizing agent, accelerator, flow aid and masterbatch until the temperature reaches 80-90°C, and discharge to obtain the rubber compound, and then thinly pass the rubber compound for 3-4 times After stripping, rubber is obtained.

By adopting the above-mentioned technical scheme, the application improves the fluidity of the rubber compound by controlling the temperature when the flow agent is added, and the initial temperature when the vulcanizing agent, accelerator and other components are mixed, so that each component is easier to mix evenly, improving The uniformity of the rubber as a whole. In addition, the rubber material is thinly passed several times, which further improves the uniformity of the rubber as a whole and makes the surface of the rubber more even and smooth.

Preferably, in the step S2, the rubber material needs to be put into the open mill during the thin pass process, and the roller distance of the open mill is controlled to be 0.03-0.05 mm.

By adopting the above technical solution, the present application further controls the distance between the rollers within a specific thinness range, which can further improve the overall uniformity of the rubber, making the surface of the rubber more even and smooth.

Preferably, in the step S2, the roller distance scale of the open mill is 0 scale when the sliver is produced.

By adopting the above-mentioned technical scheme, the applicant adjusts the scale on the mill to 0 scale, and extrudes the rubber material under this scale to obtain rubber with high uniformity.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The fluidity of the rubber of this application and the dispersion of components such as reinforcing fillers are relatively high, the overall uniformity of the rubber is relatively high, and the mechanical properties are strong;

2. The rubber surface of the present application has a low degree of roughness, is smooth and smooth, and has a high aesthetic degree;

3. The rubber preparation method of the present application has simple steps, is easy to operate, and is suitable for large-scale industrial production.

Description of drawings

Fig. 1 is the photograph of the rubber when not adding dispersant that is obtained according to comparative example 1 of the application;

Fig. 2 is a photograph of the rubber prepared according to Example 3 of the present application after adding a dispersant.

Detailed ways

The present application will be described in further detail below in conjunction with the examples.

<material source>

Chlorosulfonated polyethylene, purchased from Shandong Leon New Material Technology Co., Ltd., model TS530;

Flow agent WB222 was purchased from Guangzhou Lida Rubber Raw Material Trading Co., Ltd.;

Diisononyl phthalate, purchased from Shandong Chenyu Chemical Co., Ltd.;

Flow aid ST, purchased from Guangzhou Situyuan Chemical Co., Ltd.;

Flow aid AC, purchased from Hebei Zhuoxiang Chemical Technology Co., Ltd.;

Vulcanizing agent MC-2, purchased from Jinan Haiyuan Chemical Co., Ltd.;

Dispersant H60EF was purchased from Shandong Yanggu Huatai Chemical Co., Ltd.;

Dispersant KT-8A, purchased from Guangzhou Xuxiang Chemical Co., Ltd.;

Dispersant L-12, purchased from Shanghai Yatman Chemical Co., Ltd.;

Dispersant FL-100 was purchased from Shanghai Shouli Co., Ltd.;

Carbon black, purchased from Guangzhou Wusen New Material Technology Co., Ltd., model N660;

PW-80A, purchased from Shanghai Maotong Industrial Co., Ltd.;

Titanium dioxide, purchased from Nanyang Hengxiang Chemical Co., Ltd.;

Light calcium powder was purchased from Lingshou County Yuantong Mineral Products Processing Plant;

Silane coupling agent KH-570, purchased from Guangzhou Zhongjie New Material Co., Ltd.;

Silane coupling agent Si-69 was purchased from Guangzhou Liben Rubber Raw Material Trading Company;

Titanate coupling agent 201, purchased from Jinan Rongguang Chemical Co., Ltd.;

The accelerator TETD was purchased from Guangzhou Liben Rubber Raw Material Trading Company;

Accelerator TT was purchased from Guangzhou Liben Rubber Raw Material Trading Company.

<Example>

Example 1

A preparation method of chlorosulfonated polyethylene rubber, comprising the following steps:

S1. First put 40kg of chlorosulfonated polyethylene into the internal mixer, and banbury for 170s at a temperature of 120°C, then add 8kg of diisononyl phthalate, 45kg of reinforcing filler (2.85kg carbon black, 12.45kg PW-80A, 6.25kg titanium dioxide and 23.45kg light calcium powder) and 1.8kg dispersant H60EF to continue banburying, when the temperature is 90°C, add 0.4kg flow agent WB222 to continue banburying, When the temperature is 120°C, the material is discharged to obtain the masterbatch;

S2. Cool the internal mixer first, control the temperature of the internal mixer below 70°C, add 0.4kg of vulcanizing agent MC-2, 0.74kg of accelerator (0.46kg of accelerator TETD, 0.28kg of accelerator TT), 0.3 kg of flow aid ST and masterbatch are put into the internal mixer, mixed and mixed until the temperature reaches 80°C, and then the rubber is obtained. The rubber material is thinly passed between the double rollers for 3 times, and then the roller distance scale of the open mill is adjusted to 0 scale, and strips are produced to obtain rubber.

Example 2

A preparation method of chlorosulfonated polyethylene rubber, comprising the following steps:

S1. Put 50kg of chlorosulfonated polyethylene into the internal mixer first, and banbury for 190s at a temperature of 130°C, then add 8.4kg of diisononyl phthalate and 35kg of reinforcing filler (0.35 kg carbon black, 9.95kg PW-80A, 3.75kg titanium dioxide and 20.95kg light calcium powder) and 1.2kg dispersant L-12 to continue banburying, when the temperature is 100°C, add 0.32kg flow agent WB222 to continue Banbury mixing, when the temperature is 130 ° C, the material is discharged to obtain the masterbatch;

S2. Cool the internal mixer first, control the temperature of the internal mixer below 70°C, add 0.5kg of vulcanizing agent MC-2, 0.7kg of accelerator (0.44kg of accelerator TETD, 0.26kg of accelerator TT), 0.33 kg of flow aid (0.2kg of flow aid ST, 0.13kg of flow aid AC) and masterbatch are put into the internal mixer and mixed until the temperature reaches 90°C, and the material is discharged to obtain the rubber material, and then the mixer The roll distance between the two rollers is adjusted to be below 0.5mm, the rubber material is passed between the two rollers 4 times, and then the roll distance scale of the open mill is adjusted to 0 scale, and the strips are produced to obtain rubber.

Example 3

A preparation method of chlorosulfonated polyethylene rubber, comprising the following steps:

S1. First put 45kg of chlorosulfonated polyethylene into the internal mixer, and banbury for 180s at a temperature of 125°C, then add 8.2kg of diisononyl phthalate and 40kg of reinforcing filler (1.6 kg carbon black, 11.2kg PW-80A, 5kg titanium dioxide and 22.2kg light calcium powder) and 1.5kg dispersant KT-8A to continue banburying, when the temperature is 95°C, add 0.36kg flow agent WB222 to continue banburying Refining, when the temperature is 125 ° C, the masterbatch is obtained from the discharge;

S2. Cool the internal mixer first, control the temperature of the internal mixer below 70°C, add 0.45kg of vulcanizing agent MC-2, 0.72kg of accelerator (0.45kg of accelerator TETD, 0.27kg of accelerator TT), 0.315 kg of flow aid AC and masterbatch were put into the internal mixer and mixed until the temperature reached 85°C, and then the rubber was obtained, and then the roller distance between the double rollers of the open mill was adjusted to be below 0.5mm, and the The rubber material is thinly passed between the double rollers for 4 times, and then the roller distance scale of the open mill is adjusted to 0 scale, and strips are produced to obtain rubber.

Example 4

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: chlorosulfonated polyethylene is 42kg, diisononyl phthalate is 8.1kg, and reinforcing filler is 38kg (1.52kg Carbon black, 10.64kg PW-80A, 4.75kg titanium dioxide and 21.09kg light calcium powder), dispersant KT-8A is 1.3kg, flow agent WB222 is 0.34kg, vulcanizing agent MC-2 is 0.42kg, accelerator is 0.71 kg (0.444kg accelerator TETD, 0.266kg accelerator TT), flow aid AC 0.31kg.

Example 5

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: chlorosulfonated polyethylene is 48kg, diisononyl phthalate is 8.3kg, and reinforcing filler is 42kg (1.68kg carbon black, 11.76kg PW-80A, 5.25kg titanium dioxide and 23.31kg light calcium powder), dispersant KT-8A is 1.7kg, flow agent WB222 is 0.38kg, vulcanizing agent MC-2 is 0.47kg, accelerator is 0.73 kg (0.456kg accelerator TETD, 0.274kg accelerator TT), flow aid AC is 0.32kg.

Example 6

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is that the dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L- 12 and dispersant FL-100; dispersant H60EF is 0.8kg, dispersant KT-8A is 0.65kg, dispersant L-12 is 0.03kg, and dispersant FL-100 is 0.02kg.

Example 7

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is that the dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L- 12 and dispersant FL-100; among them, the dispersant H60EF is 0.65kg, the dispersant KT-8A is 0.78kg, the dispersant L-12 is 0.04kg, and the dispersant FL-100 is 0.03kg.

Example 8

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is that the dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L- 12 and dispersant FL-100; dispersant H60EF is 1kg, dispersant KT-8A is 0.46kg, dispersant L-12 is 0.03kg, and dispersant FL-100 is 0.01kg.

Example 9

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is that the dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L- 12 and dispersant FL-100; 0.5kg of dispersant H60EF, 0.75kg of dispersant KT-8A, 0.125kg of dispersant L-12, and 0.125kg of dispersant FL-100.

Example 10

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: the carbon black is modified by the following method:

At a temperature of 60°C and a rotational speed of 250r/min, mix and stir 1.6kg of carbon black, 6.4kg of water, 24kg of ethanol and 28.8kg of silane coupling agent KH-570 for 1.5h, then filter and wash , and then dried at a temperature of 100° C. for 4 hours to obtain modified carbon black.

Example 11

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: the carbon black is modified by the following method:

At a temperature of 65°C and a rotational speed of 300r/min, mix and stir 1.6kg of carbon black, 8kg of water, 27.2kg of ethanol and 32kg of silane coupling agent Si-69 for 2 hours, then filter, wash, and then Dry at a temperature of 105° C. for 5 hours to obtain modified carbon black.

Example 12

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: the carbon black is modified by the following method:

At a temperature of 62.5°C and a rotational speed of 275r/min, 1.6kg of carbon black, 7.2kg of water, 25.6kg of ethanol and 30.4kg of titanate coupling agent 201 were mixed and stirred for 1.75h, and then filtered. Wash and dry at 102.5°C for 4.5 hours to obtain modified carbon black.

Example 13

A preparation method of chlorosulfonated polyethylene rubber, the difference from Example 3 is: the carbon black is modified by the following method:

At a temperature of 63°C and a rotational speed of 280r/min, 1.6kg of carbon black, 7.68kg of water, 26.4kg of ethanol and 31.2kg of coupling agent (8kg silane coupling agent KH-570, 10kg silane Coupling agent Si-69 and 13.2kg titanate coupling agent 201) were mixed and stirred for 1.6h, then filtered, washed, and dried at 104°C for 4.7h to obtain modified carbon black.

Example 14

A method for preparing chlorosulfonated polyethylene rubber, the difference from Example 3 is that in step S2, the roll distance between the double rolls of the open mill is adjusted to 0.03mm.

Example 15

A method for preparing chlorosulfonated polyethylene rubber, the difference from Example 3 is that in step S2, the roll distance between the double rolls of the open mill is adjusted to 0.05mm.

<Comparative example>

Comparative example 1

The difference from Example 3 is that in step S1, no dispersant is added to the internal mixer, and the rest are the same.

Comparative example 2

The difference from Example 3 is: 30kg of chlorosulfonated polyethylene, 6kg of diisononyl phthalate, 50kg of reinforcing filler (2kg carbon black, 14kg PW-80A, 6.25kg titanium dioxide and 27.75 kg light calcium powder), dispersant KT-8A is 2kg, flow agent WB222 is 1kg, vulcanizing agent MC-2 is 0.2kg, accelerator is 1.44kg (0.9kg accelerator TETD, 0.54kg accelerator TT), flow aid Agent AC is 0.2kg, and the rest are the same.

Comparative example 3

The difference with Example 3 is: chlorosulfonated polyethylene is 60kg, diisononyl phthalate is 10kg, reinforcing filler is 30kg (1.2kg carbon black, 8.4kg PW-80A, 3.75kg titanium dioxide and 16.65kg light calcium powder), dispersant KT-8A is 1kg, flow agent WB222 is 0.2kg, vulcanizing agent MC-2 is 1kg, accelerator is 0.576kg (0.36kg accelerator TETD, 0.216kg accelerator TT), The flow aid AC is 0.5kg, and the rest are the same.

Comparative example 4

The difference from Example 3 is that in step S1, the temperature when adding flow agent WB-222 is 110° C., and the rest are the same.

Comparative example 5

The difference from Example 3 is that in step S2, after the internal mixer is cooled, the temperature of the internal mixer is 80° C., and the rest are the same.

<performance test>

1. With reference to GB/T 528-2009 "Measurement of Tensile Stress-Strain Properties of Vulcanized Rubber or Thermoplastic Rubber", test the tensile strength and elongation at break of the rubber obtained in Examples 1-15 and Comparative Examples 1-5, test results As shown in Table 1;

2. With reference to GB/T 529-2008 "Determination of Tear Strength of Vulcanized Rubber or Thermoplastic Rubber", the tear strength of the rubber prepared in Examples 1-15 and Comparative Examples 1-5 is measured by using a rectangular sample, and the test results As shown in Table 1.

Table 1 Performance test result table

project Tensile strength (MPa) Elongation at break (%) Tear strength (kN/m) Example 1 25.20 734.22 64.50 Example 2 25.08 733.15 63.87 Example 3 27.56 785.96 69.11 Example 4 25.48 741.15 65.27 Example 5 26.35 752.33 66.35 Example 6 29.11 801.27 75.08 Example 7 30.75 805.66 76.97 Example 8 28.88 791.73 73.28 Example 9 28.19 789.15 72.65 Example 10 28.05 788.44 71.48 Example 11 28.73 789.76 73.06 Example 12 28.55 789.23 72.98 Example 13 29.01 795.41 74.37 Example 14 27.87 786.19 70.46 Example 15 27.93 786.88 70.53 Comparative example 1 19.11 578.24 48.22 Comparative example 2 21.35 608.45 55.14 Comparative example 3 22.08 622.34 54.97 Comparative example 4 22.69 635.17 56.49 Comparative example 5 23.01 641.88 57.01

As can be seen from Table 1, the tensile strength of the rubber obtained in Examples 1-3 of the present application is 25.08-27.56MPa, the elongation at break is 733.15-785.96%, and the tear strength is 63.87-69.11kN/m, indicating that The rubber prepared by the present application has better uniformity and stronger mechanical properties such as tensile strength, elongation at break and tear strength.

The tensile strength, elongation at break and tear strength of the rubber that embodiment 4-5 makes are all less than embodiment 3, illustrate that the application further controls the consumption of each component and can make each component mix more evenly, further The uniformity of the rubber is improved, thereby improving the mechanical properties of the rubber.

The tensile strength, elongation at break and tear strength of the rubber that embodiment 6-7 makes are all greater than embodiment 3, illustrate that the application adopts dispersant H60EF, dispersant KT-8A, dispersant L-12 and dispersant When FL-100 are used together, they can play a synergistic effect between each other, fully disperse components such as reinforcing fillers, improve the uniformity of the rubber, and thereby improve the mechanical properties of the rubber.

The tensile strength, elongation at break and tear strength of the rubber that embodiment 8-9 make are all greater than embodiment 3, but the tensile strength, elongation at break and tear strength of the rubber that embodiment 8-9 make The strengths are all lower than those in Examples 6-7, indicating that the application further controls the weight ratio of dispersant H60EF, dispersant KT-8A, dispersant L-12 and dispersant FL-100, and can fully exert the synergistic effect between the four, Further improve the dispersion degree of each component in the rubber compound, thereby improving the uniformity of the rubber and enhancing the mechanical properties of the rubber.

The tensile strength, elongation at break and tear strength of the rubber that embodiment 10-13 make are all greater than embodiment 3, illustrate that the present application has carried out modification treatment to carbon black, has improved the dispersion of carbon black in rubber compound Sex, thereby improving the uniformity of the rubber and enhancing the mechanical properties of the rubber.

The tensile strength, elongation at break and tear strength of the rubber that embodiment 14-15 make are all greater than embodiment 3, illustrate that the present application has further controlled the roller distance of thin pass time open mill, has further improved the integral rubber Uniformity, making the rubber surface more flat and smooth.

The tensile strength, elongation at break and tear strength of the rubber that comparative example 1 makes are all less than embodiment 3, and also can find out in conjunction with Fig. 1 and Fig. 2, the application adds dispersant in the sizing material, can be compared with The combination of flow agent and flow aid improves the dispersion of each component in the rubber compound, thereby improving the uniformity of the rubber as a whole, thereby improving the mechanical properties of the rubber, and making the rubber surface smooth.

The tensile strength, elongation at break and tear strength of the rubber that comparative example 2-3 makes are all less than embodiment 3, illustrate that if the usage amount of each component in the rubber is not within the scope of the present application, it will reduce the overall strength of the rubber. Uniformity, thereby reducing the mechanical properties of rubber.

The tensile strength, elongation at break and tear strength of the rubber obtained in Comparative Example 4-5 are all less than that of Example 3, indicating that if the temperature when the flow agent is added, and the initial temperature when components such as vulcanizing agent and accelerator are mixed, If the temperature is too high, the fluidity of the rubber compound will be reduced, thereby reducing the overall uniformity of the rubber, thereby reducing the mechanical properties of the rubber.

The embodiments of this specific implementation mode are all preferred embodiments of the application, and are not intended to limit the scope of protection of the application. Therefore: all equivalent changes made according to the structure, shape, and principle of the application should be covered by the application. Within the protection scope of this application.

Claims (9)

1. A chlorosulfonated polyethylene rubber, characterized in that the raw materials used include the following components by weight: 40-50 parts of chlorosulfonated polyethylene; Flow agent WB2220.32-0.4 part; 8-8.4 parts of diisononyl phthalate; 35-45 parts of reinforcing filler; 0.4-0.5 parts of vulcanizing agent; Accelerator 0.7-0.74 parts; 0.3-0.33 parts of flow aid ST and/or flow aid AC; 1.2-1.8 parts of dispersant; The dispersant includes dispersant H60EF, dispersant KT-8A, dispersant L-12 and dispersant FL-100 with a weight ratio of 1:(0.8-1.2):(0.04-0.06):(0.02-0.04). 2. a kind of chlorosulfonated polyethylene rubber according to claim 1, is characterized in that, described raw material comprises the component of following parts by weight: 45 parts of chlorosulfonated polyethylene; Flow agent WB2220.36 parts; 8.2 parts of diisononyl phthalate; 40 parts of reinforcing filler; 0.45 parts of vulcanizing agent; Accelerator 0.72 parts; 0.315 parts of flow aid ST and/or flow aid AC; Dispersant 1.5 parts. 3. A chlorosulfonated polyethylene rubber according to claim 1 or 2, wherein the reinforcing filler includes a weight ratio of (0.35-2.85): (9.95-12.45): (3.75-6.25) : (20.95-23.45) carbon black, PW-80A, titanium dioxide and light calcium powder. 4. a kind of chlorosulfonated polyethylene rubber according to claim 3, is characterized in that, described carbon black adopts following method to modify: At a temperature of 60-65°C and a rotational speed of 250-300r/min, carbon black, water, ethanol and The coupling agent is mixed and stirred for 1.5-2.0 hours, then filtered, washed, and dried at a temperature of 100-105° C. for 4-5 hours to obtain modified carbon black. 5. a kind of chlorosulfonated polyethylene rubber according to claim 4, is characterized in that, described coupling agent is silane coupling agent KH-570, silane coupling agent Si-69 and titanate coupling agent One or more of 201. 6. A kind of chlorosulfonated polyethylene rubber according to claim 1 or 2, characterized in that, the accelerator comprises an accelerator TETD and an accelerator in a weight ratio of (0.44-0.46): (0.26-0.28) TT. 7. a preparation method of the chlorosulfonated polyethylene rubber described in any one of claims 1-6, is characterized in that, comprises the following steps: S1. First, banbury chlorosulfonated polyethylene at a temperature of 120-130°C for 170-190s, then add diisononyl phthalate, reinforcing filler and dispersant to continue banburying, when the temperature is 90- At 100°C, add flow agent to continue banburying, and when the temperature is 120-130°C, discharge to obtain masterbatch; S2. Control the temperature below 70°C, mix vulcanizing agent, accelerator, flow aid and masterbatch until the temperature reaches 80-90°C, and discharge to obtain the rubber compound, and then thinly pass the rubber compound 3-4 times After stripping, rubber is obtained. 8. the preparation method of a kind of chlorosulfonated polyethylene rubber according to claim 7, is characterized in that, in described step S2, sizing material needs to be put into open mill, and controls open mill The roller pitch is 0.03-0.05mm. 9. The preparation method of a kind of chlorosulfonated polyethylene rubber according to claim 8, characterized in that, in the step S2, the roller distance scale of the open mill is 0 scale when stripping.

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