Characteristics of closed type acid catalyst YSM-250

2021-12-04   Pageview:192

1: It is suitable for solvent-based baking paint system, which can greatly reduce the cross-linking temperature of baking paint, and will not adversely affect the paint film products within the range of the added amount of the push note.

2: It can improve the crosslinking density, increase the hardness and gloss of the paint film, improve the corrosion resistance, hydrolysis resistance, solvent resistance and mechanical properties of the paint film.

3: It can reduce the production cost, improve the efficiency of coating production, and have good storage stability.

 

 

 

 

 

 

 

 

 

 

 

The type of fire retardant coatings can be defined in different ways, and can usually be classified according to the following methods.
(1) Classified by base material used
①Organic fire-retardant coatings Organic fire-retardant coatings are based on natural or synthetic organic resins and organic emulsions.
② Inorganic fire-retardant coatings. Inorganic fire-retardant coatings are based on inorganic adhesives. ③Organic and inorganic composite fire-retardant coatings The base material of organic and inorganic composite fire-retardant coatings is composed of organic resins or organic emulsions and inorganic adhesives.
(2) Classified by dispersion used
①Solvent-based fire-retardant coatings Solvent-based fire-retardant coatings refer to fire-retardant coatings that use organic solvents as dispersions and diluents and solvent-based organic resins as base materials.
②Water-based fire-retardant coatings. Water-based fire-retardant coatings refer to fire-retardant coatings that use water as a dispersion and diluent and water-soluble resins and emulsion polymers as base materials.
(3) Classified by fire protection form

①Non-intumescent fire-retardant coating When the non-intumescent fire-retardant micronized wax compound coating is exposed to fire, the coating basically changes in volume, forming a glaze-like protective layer, which can isolate oxygen and prevent oxygen from contacting the protected flammable substrate. Avoid or reduce the combustion reaction. However, the glaze-like protective layer produced by this type of coating has a high thermal conductivity and poor thermal insulation effect. In order to achieve a certain fire protection effect, the coating is generally thicker. Even so, its fire and heat insulation effect is very limited.

②Intumescent fire retardant coating The intumescent fire retardant coating expands and foams when exposed to fire to form a foam layer. The foam layer not only insulates oxygen, but also has good heat insulation performance because of its loose texture, which can delay heat transfer to be protected. The speed of the substrate, the expansion and foaming process of the coating to produce the foam layer produces an endothermic reaction due to the expansion of the volume, which also consumes a large amount of heat, which is beneficial to reduce the temperature of the system, so its fire and heat insulation effect is significant.

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