What are the functions and uses of curing and drying catalysts for polyurethane coatings and paints?

” >Polyurethane high-efficiency catalyst is specially used to catalyze and promote the curing and drying of various polyurethane materials such as coatings, paints, adhesives, sealants or pastes. reaction.

” >It is composed of a variety of special rare metal organic compounds and other active organic compounds. It can quickly catalyze and promote the internal chemical curing reaction of polyurethane materials at room temperature. It greatly accelerates the overall curing and drying speed of polyurethane coating, paint, adhesive, sealant and other materials (many times faster than currently commonly used catalysts such as organotin and lead), greatly shortening the construction time. time, avoid rain, improve efficacy and reduce costs;

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” >At the same time, because the curing and drying chemical reaction is relatively thorough, the overall curing performance of the polyurethane material has been improved, and the overall quality of the material has been fully guaranteed. This type of catalyst has a certain catalytic drying effect on polyester, epoxy and other resin paints and coatings.

” >Commercially availablePUCH seriesHigh-efficiency polyurethane catalystCurrently divided into: PUCH-1 type, which is a purple-brown oily liquid; PUCH-2 type, which is a dark purple oily viscous liquid. PUCH-2 type has stronger catalytic activity than PUCH-1 type and has better usage effect. The reference dosage of the two models is 0.05~2% of the total amount of polyurethane material (if it is a two-component polyurethane material, it refers to the total amount of the two components according to the usage ratio).

” >During production and use, polyurethane is generally added in proportion in advance In the system, the two-component component is non-polyurethane prepolymerB component (usually component A is polyurethane prepolymer), and is mixed and stirred evenly; the polyurethane to be used can also be added immediately at the construction site In the ingredients, stir quickly to mix evenly before use.

” >The amount of PUCH high-efficiency catalyst is directly related to the polyurethane The speed of the chemical reaction of material curing and drying must be determined by the user according to the actual situation of the material and the ideal dosage ratio. When using, avoid inhaling steam or mist liquid vapor, avoid getting it into the eyes, and avoid prolonged contact with skin and clothes. If contact occurs, wash it off with water. The container containing the product must be kept airtight and must be stored in a dark, ventilated, dry and cool place.