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the water-based paint

#1 User is offline   Qizhenbi 

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Posted 24 April 2017 - 03:34 AM

Due to the water-based paint blasting hole and the film-forming material is closely related to the glass transition temperature, high glass transition temperature resin lower glass transition temperature of the resin easy to bubble curing agent selection of high imine type high methyl ether melamine formaldehyde resin.deck wood plastic composite

high Hydroxymethyl type methylated melamine formaldehyde resin and hexamethoxymethylmelamine formaldehyde resin are several common water-soluble amino resins in which the high hydroxymethyl type amino resin belongs to the polymerized partially alkylated amino resin and contains predominantly An alkoxymethyl group and a hydroxymethyl group which contain a very small amount of imino groups.outdoor decks durable flooring

Since the alkoxymethyl group is mainly a crosslinking reaction group, a higher temperature is required to cause a crosslinking reaction, and the hydroxymethyl group reactivity is higher than that of the alkoxymethyl group, and the increase in the content of the hydroxymethyl group in the amino resin Improve the curing reaction rate and reduce the baking temperature, while it contains a very small amount of imino, can reduce the self-polymerization reaction.cover concrete porch veranda floor with wood

Therefore, this article selects high hydroxymethyl type amino resin as curing agent. The hardness of the film increased from HB to 2H, then continue to raise the temperature, the film hardness did not change. It is shown that the hydroxyl group of the film-forming material is completely crosslinked with the hydroxymethyl group and the alkoxymethyl group of the aqueous amino resin to form a three-dimensional network structure with excellent adhesion, impact resistance and flexibility.outdoor wpc flower box with all kinds of color

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