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Solid coating and preparation method

A coating and solid technology, applied in the direction of wax coatings, coatings, etc., can solve the problems of poor waterproof, anti-corrosion performance, poor fluidity of powder coatings, and inability to use filling processes, and achieves improved environmental stress cracking resistance and adhesion. Good, breathable effect

Active Publication Date: 2017-03-15
广州精点高分子材料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In some industries, powder coatings have also been widely used. In the spraying process of powder coatings, electrostatic spraying and high temperature baking are required, which makes construction difficult and consumes a lot of energy.
[0004] For powder coatings applied to wood, powder coatings have poor fluidity in a molten state, cannot be used for wood gap filling process, can only be sprayed on the surface, cannot stabilize wood, and have poor waterproof and anti-corrosion properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of solid coating is:

[0033] (1) Knead 70kg of LLDPE, 20kg of carnauba wax and 8.9kg of EVA. The mixing temperature is controlled at 30°C, cut and pass 8-10 times, cool to room temperature, and then cut and pass 8 -10 times, cool to room temperature, repeat this way 8-10 times, measure plasticity, Mooney viscosity (ML1+4100°C) ≥ 1000;

[0034] (2) After step (1) is completed, add 0.5kg of vinyltriethoxysilane, 0.5kg of dicumyl peroxide and 0.5kg of dibutyltin dilaurate, mix evenly, so that the molecular weight distribution is 2000Mw, The melting point is 95-110°C.

[0035] Wherein, in EVA, the weight percentage of vinyl acetate is 60%.

Embodiment 2

[0037] The preparation method of solid coating is:

[0038] (1) Mix 80kg of LLDPE, 10kg of carnauba wax and 8kg of EVA. The mixing temperature is controlled at 30°C, cut and pass 8-10 times, cool to room temperature, and then cut and pass 8- 10 times, cool to room temperature, repeat this way 8-10 times, measure plasticity, Mooney viscosity (ML1+4100°C) ≥ 1000;

[0039] (2) After step (1) is completed, add 0.5kg of vinyltriethoxysilane, 1kg of dicumyl peroxide and 0.5kg of dibutyltin dilaurate, and mix well. The molecular weight distribution is 2000Mw, and the melting point is 95-110°C.

[0040] Wherein, in EVA, the weight percentage of vinyl acetate is 70%.

Embodiment 3

[0042] The preparation method of solid coating is:

[0043] (1) Mix 75kg of LLDPE, 12kg of carnauba wax and 9kg of EVA. The mixing temperature is controlled at 30°C, cut and pass 8-10 times, cool to room temperature, and then cut and pass 8- 10 times, cool to room temperature, repeat this way 8-10 times, measure plasticity, Mooney viscosity (ML1+4100°C) ≥ 1000;

[0044] (2) After step (1) is completed, add 2.7kg of vinyltriethoxysilane, 1kg of dicumyl peroxide and 0.3kg of dibutyltin dilaurate, and mix well. The molecular weight distribution is 2000Mw, and the melting point is 95-110°C.

[0045] Wherein, in EVA, the weight percentage of vinyl acetate is 65%.

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Abstract

The invention discloses a solid coating and a preparation method. The solid coating is prepared from LLDPE (Linear low density polyethylene), carnauba wax, EVA, vinyltriethoxysilane, dicumyl peroxide and dibutyltin dilaurate. The preparation method comprises the following steps: (1) mixing the LLDPE, the carnauba wax, and the EVA, controlling a mixing temperature to be 30 DEG C or lower, cutting and thinning for 8 to 10 times, cooling to room temperature, re-cutting and re-thinning for 8 to 10 times, cooling to the room temperature, and repeating for 8 to 10 times; and (2) adding the vinyltriethoxysilane, the dicumyl peroxide and the dibutyltin dilaurate after the step (1) is completed, and uniformly mixing. The solid coating exists in a solid state and is good in adhesive properties, high in brightness; the solid coating is low in viscosity and good in mobility in a molten state. By using the preparation method of the invention, the solid coating which is good in adhesive properties, high in brightness, and low in viscosity and good in mobility in the molten state can be prepared.

Description

technical field [0001] This invention relates to solid coatings. Background technique [0002] The existing liquid coatings include solvent-based coatings and water-based coatings. With the requirements of the country and the people for environmental protection, water-based coatings have gradually replaced solvent-based coatings. It is vaild. [0003] In some industries, powder coatings have also been widely used. In the spraying process of powder coatings, electrostatic spraying and high temperature baking are required, which makes construction difficult and consumes a lot of energy. [0004] For powder coatings applied to wood, powder coatings have poor fluidity in a molten state, cannot be used for wood gap filling process, can only be sprayed on the surface, cannot stabilize wood, and have poor waterproof and anti-corrosion properties. Contents of the invention [0005] The object of the present invention is to provide a kind of solid paint and preparation method, th...

Claims

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Application Information

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IPC IPC(8): C09D123/08C09D191/06C09D7/12
CPCC09D7/63C09D7/65C09D123/0815C08L91/06C08L23/0853C08K5/14C08K5/5425C08K5/57
Inventor 黄玉真黄国有谢煌杨海景高小刚陈汝霖
Owner 广州精点高分子材料制品有限公司