Graphene modified thermochromic plastic and preparation method and application thereof

A technology of olefin-modified temperature-sensitive and temperature-sensitive color-changing pigments, which is applied in the field of graphene-modified temperature-sensitive color-changing plastics and its preparation, can solve problems such as waste of resources and adverse effects, and achieve the purpose of preventing lifespan reduction, enhancing surface bonding, and color change sensitive effect

Active Publication Date: 2019-04-16
宁波力达得为高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this useless improvement is not only a waste of resources, but may also be counterproductive

Method used

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  • Graphene modified thermochromic plastic and preparation method and application thereof
  • Graphene modified thermochromic plastic and preparation method and application thereof
  • Graphene modified thermochromic plastic and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation of the graphene of embodiment 1 surface treatment

[0046] Take 1 part of graphene oxide and 30 parts of surface treatment agent and put them into a reactor with a spray gun head respectively. The temperature of the reaction chamber is 130 ° C. The graphene oxide and surface treatment agent are sprayed at the same time, and the spray speed is 2m / s, the surface-treated graphene was dry and well dispersed.

[0047] Wherein the surface treatment agent is prepared by mixing 3 parts of γ-mercaptopropyl triethoxysilane, 5 parts of polyethylene glycol 1000, 5 parts of polyacrylic acid and 2 parts of ethylene bis stearic acid amide, and the mass ratio is 1.5:2.5:2.5:1.

Embodiment 2

[0050] Embodiment 2 preferred best surface treatment agent

[0051] Surface treatment agent A: Prepared by uniformly mixing 3 parts of γ-mercaptopropyltriethoxysilane, 7 parts of polyethylene glycol 1000, 8 parts of polyacrylic acid, and 2 parts of ethylene bisstearamide.

[0052] Surface treatment agent B: Prepared by uniformly mixing 2 parts of γ-mercaptopropyltriethoxysilane, 6 parts of polyethylene glycol 1000, 6 parts of polyacrylic acid, and 6 parts of ethylene bisstearamide.

[0053] Surface treatment agent C: 5 parts of γ-mercaptopropyl triethoxysilane, 5 parts of polyethylene glycol 1000, 6 parts of polyacrylic acid, 2 parts of ethylene bis stearic acid amide, 2 parts of pentaerythritol stearate and mix evenly Prepared.

[0054] Surface treatment agent D: 4 parts of γ-mercaptopropyl triethoxysilane, 4 parts of polyethylene glycol 1000, 6 parts of polyacrylic acid, 2 parts of ethylene bis stearic acid amide, 2 parts of pentaerythritol stearate, bis Prepared by unifor...

Embodiment 3

[0059] Example 3 Preparation of graphene-modified thermochromic plastics

[0060] Add 8 parts of 31°C red temperature-sensitive color-changing pigment into 90 parts of polyvinyl chloride, stir for 30 minutes until uniformly dispersed, add 3 parts of surface-treated graphene prepared in Example 1, 0.6 parts of crosslinking agent diethylenetriamine, 0.5 part of triethylenetetramine, 0.4 part of initiator lauryl peroxide, 0.6 part of stabilizer calcium stearate, 0.2 part of plasticizer diisononyl phthalate to make a mixture, and add the mixture to injection molding Injection molding is carried out in the machine, and after the mold is trimmed, it is made into a temperature-sensitive color-changing plastic.

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Abstract

The invention discloses graphene modified thermochromic plastic. The graphene modified thermochromic plastic is prepared from, by mass, 60-90 parts of plastic particles, 2-5 parts of surface-treated graphene, 6-13 parts of thermochromic pigment, 0.1-3 parts of a crosslinking agent, 0.1-2 parts of an initiator, 0-0.9 part of a stabilizing agent and 0-2 parts of a plasticizer, wherein graphene and asurface treatment agent are jetted to a reaction chamber by using a jet spreading method at the same time to prepare the surface-treated graphene. The graphene prepared by using the jet spreading technology is high in dispersibility, high in particle size uniformity and capable of improving the heat conductivity of the thermochromic plastic, so that the thermochromic sensitivity is improved, andthe shock-resisting strength and the weather resistance of the thermochromic plastic are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a graphene-modified thermochromic plastic and a preparation method and application thereof. Background technique [0002] At present, China's plastics industry has become the four major basic material industries along with steel, cement, and wood. As one of the pillar industries of the light industry, the plastics industry has maintained a growth rate of more than 10% in recent years. While maintaining a relatively fast development speed, the economic benefits have also improved. From the previous single synthetic resin to the current production of various modified polymer plastic products, the plastics industry is undergoing rapid changes in line with the development of the times. In the current sales market, in addition to single plastic products, with the continuous improvement of people's living standards and continuous advancement of science ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/06C08K9/04C08K3/04
CPCC08K9/04C08K9/06C08K9/08C08K13/06C08K3/042C08L27/06
Inventor 王鑫
Owner 宁波力达得为高分子科技有限公司
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