Polyurethane composition for wood-like spraying all-water foaming system as well as preparation method and equipment

Abstract

The invention discloses a polyurethane composition for a wood-like spraying all-water foaming system. The polyurethane composition is prepared from the following components in parts by weight: 85 parts of polyether; 15 parts of polyester; 3-5 parts of a cross-linking agent; 1 to 5 parts of a catalyst; 2-5 parts of a foam stabilizer; and 1-1.5 parts of water. The preparation method of the polyurethane composition comprises the following steps: S1, raw material preparation; S2, heat exchange and grinding; and S3, dehydration, stirring and reaction; and S4, metering, filling and detecting. The invention also provides preparation equipment of the polyurethane composition for the wood-like spraying all-water foaming system. According to the invention, the polyurethane composition, the preparation method and the equipment are synchronously improved, so that the component cost of the polyurethane composition spraying material is reduced, the comprehensive performance is improved, the sprayingperformance is good, the texture formed by a coating layer is clear, the production cost is reduced, the market demand can be met, and the large-scale popularization and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of polymer polyurethane coating manufacturing, in particular to a polyurethane composition, preparation method and equipment for wood-like spraying all-water foaming system. Background technique [0002] With the development of material technology, less and less solid wood materials are used, and other materials are used instead of wood. These materials require surface spraying operations. For example, imitation wood railings, doors and windows, furniture and other products made of concrete materials, metal materials, wood-plastic composite materials, etc., have specific requirements for spraying materials and processes. During the painting process, attention should be paid to the uniformity and smoothness of the imitation wood strips on the surface, so that the paint surface is uniform and the brightness is uniform. The surface of the parts should not be wrong, the coating should not be leaked, the coatin...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a polyurethane composition, preparation method and equipment for imitation wood spraying all-water foaming system, focusing on synchronous improvement of the polyurethane composition, preparation method and equipment to solve the current Some polyurethane spraying materials have problems such as high component cost, poor comprehensive performance, poor spraying performance, unclear texture formed by the coating, high production cost, and cannot meet market demand.

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