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Anti-interference low-temperature curing catalyst for powder paint and preparation method thereof

A curing catalyst and powder coating technology, applied in powder coatings, coatings, etc., can solve the problems of high temperature curing of powder coatings, increase of production costs of enterprises, waste of energy, etc., to achieve sensitive mixing control, improve quality, and reduce production costs Effect

Inactive Publication Date: 2015-03-11
TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing powder coating system, the powder coating needs to be cured at high temperature, which not only wastes a lot of energy, but also increases the production cost of the enterprise.

Method used

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  • Anti-interference low-temperature curing catalyst for powder paint and preparation method thereof
  • Anti-interference low-temperature curing catalyst for powder paint and preparation method thereof
  • Anti-interference low-temperature curing catalyst for powder paint and preparation method thereof

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Effect test

Embodiment 1

[0038] An anti-interference low-temperature curing catalyst for powder coatings, its raw material components and parts by weight are as follows:

[0039]

[0040] The above-mentioned anti-interference low-temperature curing catalyst for powder coatings can be prepared by twin-screw molten solid phase slurry addition polymerization, and its specific preparation steps are as follows:

[0041] (1) The process parameters of the extrusion equipment are adjusted in place and are in a state of sensitive self-control;

[0042] The temperature of the first, second, third and fourth stages is controlled within the set range: the temperature of the first stage is 0-40°C, the temperature of the second stage is 150-180°C, the temperature of the third stage is 200-220°C, and the outlet temperature of the fourth stage is 180-120°C. And it can sensitively and automatically control the temperature through electric heating rods and circulating cooling water. The temperature control is realiz...

Embodiment 2

[0054]

[0055] The preparation method of the anti-interference low-temperature curing catalyst for the above-mentioned powder coating, the steps are as follows:

[0056] (1) Accurately weigh FINEDIC A-241, dicumyl peroxide, and polypropylene micropowder (average particle size 1--5 μm), put them into a pre-mixing mixer and mix for 5-8 minutes (stirring at room temperature), and discharge to obtain a mixed good material;

[0057] (2) Control the temperature of the first, second, third and fourth stages of the melting extruder (co-rotating twin-screw extruder) within the set range, the temperature of the first stage is 0-40°C, the temperature of the second stage is 150-180°C, and the temperature of the third stage is 200 ~220°C, the temperature of the four-stage outlet is 180-120°C, and the temperature of each stage during the entire extrusion process must be maintained within the range;

[0058] (3) Pour the materials mixed in step (1) into the hopper, turn on the screw of ...

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Abstract

The invention relates to an anti-interference low-temperature curing catalyst for powder paint. The anti-interference low-temperature curing catalyst consists of the following materials in parts by weight: 200-300 parts of epoxy acrylic resin, 2.0-2.5 parts of dicumyl peroxide, 125-150 parts of polypropylene micro powder and 20-30 parts of triphenylphosphine. The catalyst resin disclosed by the invention is applicable to indoor and outdoor powder paint of the powder paint field, and mainly used for catalyzing carboxyl polyester. A film formed after spraying the thermosetting powder paint prepared by using the catalyst can lower a curing temperature to 140 DEG C from 180 DEG C, has good leveling performance and decorative performance, so that appearance decorative effect and construction convenience of the film are improved; and meanwhile, anti-interference performance, anti-fouling performance and environmental adaptability of the powder paint are improved; besides, the catalyst saves energy resources, lowers production cost, improves powder paint quality, broadens application field of the powder paint, and opens application of the catalyst and prepared powder paint in the novel field.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to the synthesis and preparation of catalyst copolymers for powder coatings, in particular to an anti-interference low-temperature curing catalyst for powder coatings and a preparation method thereof. Background technique [0002] As the country and society pay more and more attention to environmental protection, all industries, especially the chemical industry, are required to take effective measures to reduce and eliminate the pollution of harmful substances to the environment, improve production efficiency and save energy. Due to its 100% solvent-free, no VOC (emission of volatile organic compounds) emissions, and almost 100% utilization rate, powder coatings occupy a special position in the coatings industry and have achieved rapid development. However, in the existing powder coating system, the powder coating needs to be cured at high temperature, which not only wastes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C09D5/03C08G81/02C08G59/68
Inventor 王焱
Owner TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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