CN114031980A

CN114031980A - A magnetic writable crayon

Info

Publication number: CN114031980A
Application number: CN202111591850.XA
Authority: CN
Inventors: 熊玉兵; 孙磊; 戴志锋
Original assignee: Longgang Research Institute Of Zhejiang University Of Technology Co ltd; Zhejiang Sci Tech University ZSTU
Current assignee: Longgang Research Institute Of Zhejiang University Of Technology Co ltd; Zhejiang Sci Tech University ZSTU
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-02-11

Abstract

The invention belongs to the field of stationery, and in particular relates to a magnetic writeable crayon. 2-5 parts, solid paraffin wax 30-35 parts, polyethylene wax 5-10 parts, metal magnetic powder 5-10 parts, polyvinyl alcohol 5-10 parts, pigment 5-8 parts. The invention solves the problem of single function of the crayon, uses metal magnetic powder to endow the crayon with magnetism, not only keeps the crayon writing and drawing itself, but also has its own magnetism, which is convenient for teachers and children to arrange and temporarily place.

Description

Magnetic wax crayon capable of writing

Technical Field

The invention belongs to the field of cultural goods, and particularly relates to a magnetic wax crayon capable of writing.

Background

The crayon is a common tool for children during drawing, is popular with children in rich colors, and can bring various imagination into play while drawing to create creative works. The wax-colored drawing is an art form widely applied to drawing of teenagers and children, can be used for drawing still objects, landscapes and figures, and is popular with students due to convenient and quick drawing, simple tools and certain artistic appeal. The crayon is simple in manufacturing process, the main components of the crayon are paraffin and pigment, and most of crayons doped with the pigment are formed by pouring. The existing crayon is single in functionality and has a certain drawing effect, but the actual use experience is poor. Therefore, there is a need in the market for a multifunctional crayon.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a magnetic wax crayon capable of writing, which solves the problem of single function of the wax crayon, and the metal magnetic powder is used for endowing the wax crayon with magnetism, so that the wax crayon not only keeps writing and drawing of the wax crayon, but also has magnetism, and is convenient for arrangement and temporary placement of teachers and children.

In order to achieve the technical purpose, the technical scheme of the invention is as follows:

a magnetic wax crayon capable of writing comprises the following components in percentage by mass: 10-15 parts of stearamide, 1-2 parts of stearic acid, 3-5 parts of glycerol, 2-5 parts of polyethylene glycol, 30-35 parts of solid paraffin, 5-10 parts of polyethylene wax, 5-10 parts of metal magnetic powder, 5-10 parts of polyvinyl alcohol and 5-8 parts of pigment.

The preparation method comprises the following steps:

step 1, preparing glue solution: stirring stearamide at 60-70 ℃ to form a molten state, adding stearic acid and glycerol, continuously stirring to the molten state, adding polyethylene glycol, and stirring to the molten state to obtain a homogeneous glue solution, wherein the glue solution can improve the dispersion effect of pigment and magnetic powder, and the addition of glycerol can ensure that a crayon keeps smooth hand feeling during writing and drawing and can also ensure that the demoulding effect after forming is better;

step 2, preparing synthetic wax: at the temperature of 70-100 ℃, stirring and melting the solid paraffin and the polyethylene wax to obtain a mixture, then adding the melted mixture into the homogeneous glue solution, and continuously stirring for 2-4 hours to obtain sol synthetic wax; the addition of the polyethylene wax can increase the strength of the crayon and increase the glossiness of the crayon;

step 3, preparing the magnetic crayon: adding the metal magnetic powder into the sol synthetic wax, uniformly stirring, sequentially adding polyvinyl alcohol and pigment, fully stirring for 1-2h until the metal magnetic powder is uniform, then discharging in a molten state, and pouring into a mold for molding to obtain the magnetic crayon. The polyvinyl alcohol can make the magnetic powder better to be dispersed evenly in a wax system, so that subsequent crayons can generate adsorbability, the mold is heated to 70 ℃, the surface of the crayons is smoother after being cooled to room temperature, the crayons can be used for writing and drawing after being cooled to the room temperature, and the magnetic characteristic is achieved, and the crayons can be directly adsorbed on the white board.

The pigment is one of pigment yellow, pigment red, pigment violet, pigment orange, pigment blue and pigment green.

From the above description, it can be seen that the present invention has the following advantages:

1. the magnetic wax crayon solves the problem of single function of the wax crayon, and the metal magnetic powder is used for endowing the wax crayon with magnetism, so that the wax crayon not only keeps writing and drawing of the wax crayon, but also has magnetism, and is convenient for arrangement and temporary placement of teachers and children.

2. The invention has simple manufacturing process and is easy to realize industrialization.

Drawings

FIG. 1 shows the crayon configuration and magnetic effect of the present invention prepared in example 1.

Fig. 2 is a schematic view showing a thermal weight loss of a crayon according to example 1 of the present invention.

FIG. 3 is a chart of an infrared absorption spectrum of a crayon of example 1 of the present invention.

Detailed Description

An embodiment of the present invention is described in detail with reference to fig. 1 to 3, but the present invention is not limited in any way by the claims.

Example 1

A magnetic wax crayon capable of writing comprises the following components in percentage by mass: 10 parts of stearamide, 1 part of stearic acid, 3 parts of glycerol, 2 parts of polyethylene glycol, 30 parts of solid paraffin, 5 parts of polyethylene wax, 5 parts of metal magnetic powder, 5 parts of polyvinyl alcohol and 5 parts of pigment.

The preparation method comprises the following steps:

step 1, preparing glue solution: stirring stearamide at 60 ℃ to form a molten state, adding stearic acid and glycerol, continuously stirring to the molten state, and finally adding polyethylene glycol, stirring to the molten state to obtain homogeneous glue solution;

step 2, preparing synthetic wax: at 70 ℃, stirring and melting solid paraffin and polyethylene wax to obtain a mixture, then adding the melted mixture into the homogeneous glue solution, and continuously stirring for 2-4 hours to obtain sol synthetic wax;

step 3, preparing the magnetic crayon: adding the metal magnetic powder into the sol synthetic wax, uniformly stirring, sequentially adding polyvinyl alcohol and pigment red, fully stirring for 1h until the metal magnetic powder is uniform, then discharging in a molten state, and pouring into a mold for molding at 70 ℃ to obtain the magnetic crayon.

The product of this example is red as shown in fig. 1, and has good magnetic properties.

Example 2

A magnetic wax crayon capable of writing comprises the following components in percentage by mass: 15 parts of stearamide, 2 parts of stearic acid, 5 parts of glycerol, 5 parts of polyethylene glycol, 35 parts of solid paraffin, 10 parts of polyethylene wax, 10 parts of metal magnetic powder, 10 parts of polyvinyl alcohol and 8 parts of pigment yellow.

The preparation method comprises the following steps:

step 1, preparing glue solution: stirring stearamide at 70 ℃ to form a molten state, adding stearic acid and glycerol, continuously stirring to the molten state, and finally adding polyethylene glycol, stirring to the molten state to obtain homogeneous glue solution;

step 2, preparing synthetic wax: at the temperature of 100 ℃, stirring and melting solid paraffin and polyethylene wax to obtain a mixture, then adding the melted mixture into the homogeneous glue solution, and continuously stirring for 4 hours to obtain sol synthetic wax;

step 3, preparing the magnetic crayon: adding the metal magnetic powder into the sol synthetic wax, uniformly stirring, sequentially adding polyvinyl alcohol and pigment yellow, fully stirring for 2 hours till the metal magnetic powder is uniform, then discharging in a molten state, pouring into a mold, and forming at 70 ℃ to obtain the magnetic crayon.

The product of this example is yellow and has good magnetic properties.

Example 3

A magnetic wax crayon capable of writing comprises the following components in percentage by mass: 12 parts of stearamide, 2 parts of stearic acid, 4 parts of glycerol, 4 parts of polyethylene glycol, 32 parts of solid paraffin, 8 parts of polyethylene wax, 8 parts of metal magnetic powder, 8 parts of polyvinyl alcohol and 6 parts of pigment.

The preparation method comprises the following steps:

step 1, preparing glue solution: stirring stearamide at 65 ℃ to form a molten state, adding stearic acid and glycerol, continuously stirring to the molten state, and finally adding polyethylene glycol, stirring to the molten state to obtain homogeneous glue solution;

step 2, preparing synthetic wax: at 90 ℃, stirring and melting solid paraffin and polyethylene wax to obtain a mixture, then adding the melted mixture into the homogeneous glue solution, and continuously stirring for 3 hours to obtain sol synthetic wax;

step 3, preparing the magnetic crayon: adding the metal magnetic powder into the sol synthetic wax, uniformly stirring, sequentially adding polyvinyl alcohol and pigment blue, fully stirring for 1-2h until the metal magnetic powder is uniform, then discharging in a molten state, and pouring into a mold for molding at 70 ℃ to obtain the magnetic crayon.

The product of this example is blue and has good magnetic properties.

Performance detection

The magnetic crayons of examples 1 to 3 were examined for smoothness of writing, hardness, degree of coloring and magnetic properties, and numbers 1 to 5 indicated poor, normal, good and excellent, respectively.

Performance characterization	Example 1	Example 2	Example 3
				Fluency (fen)	4	4	3
Hardness (minutes)	5	5	5
				Tinting strength (fen)	3	5	4
Magnetism (minute)	3	4	4

FIG. 2 shows that the thermal weight loss change of crayon ensures good thermal stability of crayon, and the infrared absorption spectrum analysis of FIG. 3 shows 2955cm^-1And 1466cm^-1Is characterized by the peak of the magnetic powder, and 2922cm^-1And 1370cm^-1The points are the symmetric stretching vibration peak and the deformation vibration peak of the methyl of the paraffin wax. From the above table and fig. 2, it can be seen that the magnetic crayon for children of example 1 has good performances such as fluency, hardness, tinting strength and magnetism, and has stable magnetic effect and thermal stability, so that the magnetic crayon is worthy of popularization, and has extremely wide market prospect and application value.

It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.

Claims

1. A magnetic writing crayon, comprising: the mass ratio is as follows: 10-15 parts of stearamide, 1-2 parts of stearic acid, 3-5 parts of glycerol, 2-5 parts of polyethylene glycol, 30-35 parts of solid paraffin, 5-10 parts of polyethylene wax, 5-10 parts of metal magnetic powder, 5-10 parts of polyvinyl alcohol and 5-8 parts of pigment.

2. The magnetic writable crayon of claim 1, wherein: the pigment is one of pigment yellow, pigment red, pigment violet, pigment orange, pigment blue and pigment green.

3. The magnetic writable crayon of claim 1, wherein: the preparation method of the crayon comprises the following steps:

step 1, preparing glue solution: stirring stearamide to form a molten state, adding stearic acid and glycerol, continuously stirring to the molten state, and finally adding polyethylene glycol, stirring to the molten state to obtain homogeneous glue solution;

step 2, preparing synthetic wax: stirring and melting solid paraffin and polyethylene wax to obtain a mixture, adding the molten mixture into the homogeneous glue solution, and continuously stirring for 2-4h to obtain sol synthetic wax;

step 3, preparing the magnetic crayon: adding the metal magnetic powder into the sol synthetic wax, uniformly stirring, sequentially adding polyvinyl alcohol and pigment, fully stirring for 1-2h until the metal magnetic powder is uniform, then discharging in a molten state, and pouring into a mold for molding to obtain the magnetic crayon.

4. The magnetic writable crayon of claim 3, wherein: the melting temperature of the step 1 is 60-70 ℃.

5. The magnetic writable crayon of claim 3, wherein: the melting temperature of the step 2 is 70-100 ℃.

6. The magnetic writable crayon of claim 3, wherein: the mold forming temperature of the step 3 is 70 ℃.