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Principle Of Action Of Matting Agent And Matt Hardener On Powder Coating

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Principle Of Action Of Matting Agent And Matt Hardener On Powder Coating

In the formula of powder coating, the matting agent is a physical action, the Matt Hardener is a chemical reaction, the powder coating film matting agent.

The matting action of matting agent is mainly produced by bad compatibility between matting agent and film forming material, which is mainly physical action.Physical method of extinction also use extinction filler, such as extinction barium, kaolin, wollastonite, etc.Also can use the method such as matting resin to also be effective.This physical extinction method of extinction range is relatively narrow, especially with the extinction filler extinction method, can only be applied to the low gloss to about 60% (60 °) range.


Matt Hardener extinction principle is to use two different reactivity of the curing agent system, as one of the system of curing reactivity, reaction speed, small another system of curing reactivity, slow reaction, two kinds of powder coating film forming matter system and reaction rate differences between the difference of compatibility between the two kinds of reaction products, form the onlookers rough surface on the diffuse reflection and scattering light, and weak reflection power coating of extinction.In the curing reaction, the two reaction systems have interpenetrating network structure, and the film has extinction effect. Matt Hardener is a special kind of matting agent, in the process of powder coating film, as a part of the curing agent to participate in the chemical cross-linking reaction, through the resin, curing agent (or curing resin) and matting curing agent dosage adjustment, coating gloss easy to control, coating gloss stability is good, gloss control range is wide.

Pub Time : 2019-10-15 10:09:08 >> News list
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