Preparation method of epoxidized crosslinked polypropylene powder coating

A cross-linked polypropylene and powder coating technology, applied in the material field, can solve the problems of poor dispersibility, reduce the stability and strength of finished materials, and achieve improved stability strength, improved aging resistance and storage stability, and improved compatibility. Effect

Inactive Publication Date: 2017-09-26
谢泳江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the method of this invention, directly extrude after mixing the micron mica powder with each raw material, it is easy to cause defects such as poor dispersion of the micron mica powder, and reduce the stability and strength of the finished material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for epoxidized cross-linked polypropylene powder coating, comprising the following steps:

[0022] (1) Get 14 parts by weight of diatomite, calcinate at 700°C for 2 hours, mix with 3 parts by weight of calcium bicarbonate, add to deionized water 4 times the weight of the mixture, add 2 parts by weight of stearic acid , raise the temperature to 80°C, heat and stir for 2 hours, filter, wash the precipitate with water, and dry at room temperature to obtain modified diatomite;

[0023] (2) Take the above-mentioned modified diatomite, add it into tetrahydrofuran with 4 times its weight, stir evenly, add 1 weight part of epichlorohydrin, ultrasonicate for 3 minutes, add 2 weight parts of ammonium trimolybdate, continue ultrasonication After 13 minutes, tetrahydrofuran was distilled off to obtain epoxidized modified diatomite;

[0024] (3) Get the sodium myristate soap of 2 weight parts, join in the dehydrated alcohol of its weight 8 times, stir evenly, a...

Embodiment 2

[0031] (1) Get 10 parts by weight of diatomite, calcinate at 600°C for 1 hour, mix with 23 parts by weight of calcium bicarbonate, add to deionized water twice the weight of the mixture, add 2 parts by weight of stearic acid , raise the temperature to 70°C, heat and stir for 1 hour, filter, wash the precipitate with water, and dry at room temperature to obtain modified diatomite;

[0032] (2) Take the above-mentioned modified diatomite, add it into tetrahydrofuran which is 3 times its weight, stir evenly, add 0.8 weight part of epichlorohydrin, ultrasonic for 2 minutes, add 1 weight part of ammonium trimolybdate, continue ultrasonic After 10 minutes, THF was distilled off to obtain epoxidized modified diatomite;

[0033] (3) Get the sodium myristate soap of 1 weight part, join in the dehydrated alcohol of its weight 5 times, stir evenly, add the magnesium stearate of 0.8 weight part, the triethylamine of 2 weight parts, ultrasonic 1 minute , to obtain soap amine solution;

...

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Abstract

The invention discloses a preparation method of an epoxidized crosslinked polypropylene powder coating. According to the preparation method, diatomite is subjected to epoxidation treatment, then polypropylene powder is dispersed into acetic ether, mixing treatment is performed with 8-hydroxyquinoline and calcium acetylacetonate to improve anti-aging resistance and storage stability of the polypropylene powder, then the polypropylene powder is reacted with a saponification solution of triethylamine to obtain a mixture of aminated polypropylene and epoxidized diatomite, and crosslinking is formed under the action of diisocyanate, so that agglomeration is reduced, the compatibility between the diatomite and polypropylene is improved, and the stability and strength of a finished product are improved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of epoxidized crosslinked polypropylene powder coating. Background technique [0002] Powder coating is a solvent-free, 100% solids powder coating. It has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. [0003] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of no solvent, no pollution, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. It has three categories: thermoplastic powder coatings (PE), thermosetting powder coatings, and architectural powder coatings. Coatings are prepared by mixing special resins, pigments and fillers, curing agents and other additives in a certain proportion, and then through hot ...

Claims

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Application Information

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IPC IPC(8): C09D123/12C09D5/03C09D7/12
CPCC09D123/12C08K2201/014C08L2205/025C08L2205/03C09D5/033C08L23/12C08K13/06C08K9/04C08K3/34C08K5/098C08K5/29
Inventor 谢泳江
Owner 谢泳江
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