CN108504064A - Mobility PC/ABS composite materials and its molded product - Google Patents

Abstract

The present invention relates to the technical field of polymer materials, in particular to a fluid PC/ABS composite material, which includes PC resin, ABS resin, toughening agent, flow modifier, flame retardant, and reinforcing material in parts by weight. , wherein the flow modifier is at least one of zirconium phosphate and its derivatives, hyperbranched polyphosphate. The fluidity PC/ABS composite material of the present invention, by adding a flow modifier in the composite material, the flow modifier effectively improves the physical flow performance and impact strength of the composite material, and the composite material thus obtained has higher Impact strength, and can ensure that the elongation of the composite material is 60%, and the melt index (MI) reaches 40g/10min (260°C/2.16Kg).

Description

Fluid PC/ABS Composite Material and Its Molded Products

【Technical field】

The invention relates to the technical field of polymer materials, in particular to a fluid PC/ABS composite material and its molded product.

【Background technique】

PC (polycarbonate) and ABS resin composite materials have the advantages of easy processing and molding, and a wide range of adjustable physical properties. They are widely used in household appliances, automobiles, electronic appliances, instruments, lighting equipment, national defense and military industries.

Usually, high-performance PC/ABS composite materials try to use PC resin with large molecular weight as raw material, and add a large amount of rubber toughener to ensure the toughness of the composite material. However, adding a large amount of toughening agent will make the fluidity of the composite worse, which seriously affects the application of PC/ABS composites in large injection molding products. At present, it is generally improved by reducing the amount of rubber toughening agent added and adding a large amount of phosphate flame retardant, but this method will greatly reduce the physical properties of the composite material, especially the physical elongation performance of the composite material.

In view of this, it is necessary to develop a PC/ABS composite material with high fluidity to solve the problem that the composite material exhibits high fluidity while ensuring that the physical properties are not reduced, and improve the elongation performance of the composite material.

【Content of invention】

Therefore, the object of the present invention is to provide a fluidity PC/ABS composite material, the fluidity performance of the PC/ABS composite material is greatly improved by adding a flow modifier to the composite material.

In order to achieve the above object, the fluidity PC/ABS composite material of the present invention comprises by weight parts:

Wherein, the flow modifier is at least one of zirconium phosphate and its derivatives, and hyperbranched polyphosphate.

Optionally, the PC resin is bisphenol A polycarbonate, polyester polycarbonate, silicone-polycarbonate, cyclohexane bisphenol A polycarbonate, high temperature resistant polycarbonate synthesized by bisphenol TMC Compounding of two or more carbonates.

Optionally, under the condition that the ambient temperature is 300° C. and the load weight is 1.2 kg, the melt index (MI) of the PC resin is 3-35 g/10 min.

Optionally, the ABS resin is acrylonitrile-butadiene-styrene.

Optionally, the weight ratio of the PC resin to the ABS resin is between 9.5:1-6:4.

Optionally, the toughening agent is cross-linked methacrylate-methyl methacrylate toughening agent, butadiene-styrene-methyl methacrylate toughening agent, silicone rubber-methyl methacrylate At least one of the methyl acrylate tougheners.

Optionally, the fluid PC/ABS composite material further includes at least one of an antioxidant, a lubricant, an anti-dripping agent, and a release agent.

Optionally, the flame retardant is 1,3 phenylene phosphate (2,6-tolyl) tetraester, tetraphenyl bisphenol A diphosphate and its derivative flame retardant, tetraphenyl m-phenyl At least one of diphenol diphosphate and its derivative flame retardants, cross-linked polydimethylsiloxane flame retardants.

Optionally, the reinforcing material is at least one of wollastonite, barium sulfate, calcium carbonate, talcum powder, silicon dioxide, glass microspheres, and montmorillonite.

In addition, the present invention also provides a carbon nanotube-reinforced halogen-free flame-retardant PC/ABS molded product, and the molded product is a product produced after molding the fluid PC/ABS composite material.

Compared with the prior art, the fluidity PC/ABS composite material of the present invention, by adding a flow modifier in the composite material, the flow modifier effectively improves the physical flow properties and impact strength of the composite material, thus obtaining The composite material has high impact strength, and can ensure that the elongation of the composite material is 60%, and the melt index (MI) reaches 40g/10min (260°C/2.16Kg).

【Detailed ways】

Fluidity PC/ABS composite material of the present invention comprises by weight parts:

50-80 parts of PC resin (polycarbonate), described PC resin is bisphenol A type polycarbonate, polyester polycarbonate, organosilicon-polycarbonate, cyclohexane bisphenol A type polycarbonate, Two or more compounding of high temperature resistant polycarbonate synthesized by bisphenol TMC, under the condition that the ambient temperature is 300°C and the load weight is 1.2kg, the melt index (MI) of the PC resin is 3- 35g/10min.

2-15 parts of ABS resin (acrylonitrile-butadiene-styrene), the weight ratio of the PC resin to the ABS resin is between 9.5:1-6:4.

3-7 parts of toughening agent, described toughening agent is cross-linked methacrylate-methyl methacrylate toughening agent, butadiene-styrene-methyl methacrylate toughening agent, organic At least one of silicone rubber-methyl methacrylate tougheners.

0.1-1 part of flow modifier, the fluid PC/ABS composite material also includes at least one of antioxidant, lubricant, anti-dripping agent, and release agent, and the flow modifier effectively improves the composite The physical flow properties of the material.

10-20 parts of flame retardant, said flame retardant is 1,3 phenylene phosphate (2,6-tolyl) tetraester, tetraphenyl bisphenol A diphosphate and its derivative flame retardant, four At least one of phenylresorcinol diphosphate and its derivatives flame retardant, cross-linked polydimethylsiloxane flame retardant, when the flame retardant is added in an amount of 13 parts, it can reach The best flame retardant effect is 1.2mmV-0 grade.

Wherein, the fluid PC/ABS composite material also includes 5-15 parts of reinforcing materials, and the reinforcing materials are wollastonite, barium sulfate, calcium carbonate, talcum powder, silicon dioxide, glass beads, montmorillonite, etc. At least one of them, the cost can be reduced by adding inorganic filler materials, and the effects of filling, strengthening and improving material properties can also be achieved.

Wherein, within the scope of not affecting the effect of the present invention, in order to obtain other functional composite materials, the fluidity PC/ABS composite material also includes at least one of antioxidant, lubricant, anti-dripping agent, and release agent. kind.

In order to have a further understanding of the purpose, effect and technical means of the present invention, it is described as follows in conjunction with specific embodiments.

Example 1

The toughening agent, flow modifier, flame retardant, reinforcing material, and anti-dripping agent are weighed according to the above ratio, placed in a high-speed mixer for high-speed mixing, and taken out for use; the stirred PC resin and ABS resin Melt extrusion pelletization in a twin-screw extruder. Wherein, the melt index (MI) of the above-mentioned PC resin is 12g/10min.

Comparative example 1

The toughening agent, flow modifier, flame retardant, reinforcing material, and anti-dripping agent are weighed according to the above ratio, placed in a high-speed mixer for high-speed mixing, and taken out for use; the stirred PC resin and ABS resin Melt extrusion pelletization in a twin-screw extruder. Wherein, the melt index (MI) of the above-mentioned PC resin is 12g/10min.

Example 2

The toughening agent, flow modifier, flame retardant, reinforcing material, and anti-dripping agent are weighed according to the above ratio, placed in a high-speed mixer for high-speed mixing, and taken out for use; the stirred PC resin and ABS resin Melt extrusion pelletization in a twin-screw extruder. Wherein, the melt index (MI) of the above-mentioned PC resin is 30g/10min.

Comparative example 2

The toughening agent, flow modifier, flame retardant, reinforcing material, and anti-dripping agent are weighed according to the above ratio, placed in a high-speed mixer for high-speed mixing, and taken out for use; the stirred PC resin and ABS resin Melt extrusion pelletization in a twin-screw extruder. Wherein, the melt index (MI) of the above-mentioned PC resin is 30g/10min.

After the above embodiments and comparative examples are melt-extruded and granulated, the particles in each embodiment and comparative examples are injection-molded on an injection molding machine to form GB standard test specimens, and the mechanical properties of the particles are tested according to GB standards, specifically according to ISO527 -1, -2 test the tensile strength and elongation, test the flexural strength and flexural modulus according to ISO178, test the notched impact strength according to ISO180, and test the flame retardancy according to the UL-94 standard. The test results are shown in Table 1:

Table 1: embodiment and comparative example test result

Test items Example 1 Comparative example 1 Example 2 Comparative example 2 Melt index (g/10min) 40 25 40 28 Tensile strength (MPa) 53 55 54 45 Elongation(%) 60 64 63 55 Bending strength (MPa) 92 93 93 93 Flexural modulus (MPa) 3900 3800 3900 3800 Impact strength (KJ/m2) 16 15 15 12 Flammability rating 1.2mmV-0 1.2mmV-0 1.2mmV-0 1.2mmV-0

It can be known from Table 1: Comparing Example 1 with Comparative Example 1, and comparing Example 2 with Comparative Example 2, in the Example, a PC/ABS composite material with excellent fluidity was obtained by adding a flow modifier , the melt index of the composite material has not only been improved, but also its flame retardant grade is as high as 1.2mmV-0, which has a good flame retardant effect.

In addition, the present invention also provides a carbon nanotube-reinforced halogen-free flame-retardant PC/ABS molded product, and the molded product is a product produced after molding the fluid PC/ABS composite material.

Claims (10)

1. A fluidity PC/ABS composite material is characterized in that, expressed in parts by weight, comprising: Wherein, the flow modifier is at least one of zirconium phosphate and its derivatives, and hyperbranched polyphosphate. 2. fluidity PC/ABS composite material according to claim 1, is characterized in that, described PC resin is bisphenol A type polycarbonate, polyester polycarbonate, organosilicon-polycarbonate, cyclohexane Two or more compounds of alkane bisphenol A type polycarbonate and high temperature resistant polycarbonate synthesized by bisphenol TMC. 3. The fluidity PC/ABS composite material according to claim 1, characterized in that, at an ambient temperature of 300°C and a load weight of 1.2kg, the melt index of the PC resin is 3-35g/10min . 4. The fluid PC/ABS composite material according to claim 1, wherein the ABS resin is acrylonitrile-butadiene-styrene. 5. The fluidity PC/ABS composite material according to claim 1, characterized in that, the weight ratio of the PC resin to the ABS resin is between 9.5:1-6:4. 6. The fluid PC/ABS composite material according to claim 1, wherein the toughening agent is a cross-linked methacrylate-methyl methacrylate toughening agent, butadiene-benzene At least one of ethylene-methyl methacrylate toughening agent, silicone rubber-methyl methacrylate toughening agent. 7. fluidity PC/ABS composite material according to claim 1, is characterized in that, described fluidity PC/ABS composite material also comprises at least in antioxidant, lubricant, anti-dripping agent, release agent A sort of. 8. The fluid PC/ABS composite material according to claim 1, wherein the fire retardant is 1,3 phenylene phosphate (2,6-tolyl) tetraester, tetraphenyl bisphenol At least one of A diphosphate and its derivative flame retardant, tetraphenylresorcinol diphosphate and its derivative flame retardant, cross-linked polydimethylsiloxane flame retardant. 9. fluidity PC/ABS composite material according to claim 1, is characterized in that, described reinforcing material is wollastonite, barium sulfate, calcium carbonate, talcum powder, silicon dioxide, glass microsphere, montmorillonite at least one of the 10. A carbon nanotube reinforced halogen-free flame-retardant PC/ABS molded article, characterized in that, the molded article is produced after molding the fluidity PC/ABS composite material described in any one of claims 1 to 9 product.