All-water foaming polyurethane raw material composition for polyurethane security door and preparation method of all-water foaming polyurethane raw material composition

Abstract

The invention relates to the technical field of polyurethane security doors, in particular to an all-water foaming polyurethane raw material composition for a polyurethane security door and a preparation method of the all-water foaming polyurethane raw material composition. The all-water foaming polyurethane raw material composition for the polyurethane security door is formed by mixing a component A and a component B according to the weight ratio of 1: (1.3-1.5), the component A is prepared from the following raw materials in parts by weight: 40 to 50 parts of polyether polyol A, 35 to 45 parts of polyether polyol B, 5 to 15 parts of polyether polyol C, 3 to 4 parts of foam stabilizer, 2.0 to 4.5 parts of catalyst and 4 to 6 parts of chemical foaming agent; the total part by weight of the polyether polyol is 100 parts by weight; and the component B is isocyanate. The all-water foaming polyurethane raw material composition for the polyurethane anti-theft door is green, environmentally friendly, high in dimensional stability, low in heat conductivity coefficient and low in density, and the comprehensive performance is suitable for the field of the polyurethane anti-theft door; the invention also provides a preparation method thereof.

Description

technical field [0001] The invention relates to the technical field of polyurethane anti-theft doors, in particular to a fully water-foamed polyurethane raw material composition for polyurethane anti-theft doors and a preparation method thereof. Background technique [0002] In order to improve the compressive strength of the door body, anti-theft door manufacturers add multiple reinforcing ribs inside the door, which not only increases the process but also increases the cost. However, the problem of poor local compressive strength still exists. And because there are many solder joints, the flatness of the door body is not easy to guarantee, which affects the surface quality and the product grade is low. Rigid polyurethane foam plastics have significant advantages such as light weight, high specific strength, good heat insulation effect, and convenient construction, which have attracted the attention of anti-theft door manufacturers. The good fluidity of the rigid polyureth...

AI Technical Summary

Problems solved by technology

[0004] CN104650308A discloses an anti-theft door using all-water foamed polyester rigid foam, using polyether polyol, foam stabilizer, composite foaming catalyst, and water to mix evenly, and after mixing with isocyanate to form foam, fill the anti-theft door through the injection hole For doors, the polyether polyol used has a hydroxyl value of 430mgKOH / g, and the mass fraction of polyether polyol accounts for 58-70%, which is relatively small, and the viscosity of polyether polyol is relatively high, so the dimensional stability of the formed polyurethane anti-theft door poor, poor hardness

[0005] CN112430300A discloses a polyurethane raw material composition for household appliances, polyurethane foam and its preparation method. Four kinds of polyether polyols with high viscosity are used, and the fourth-generation physical foaming agent is added. Although the dimensional stability is good, the heat conduction The coefficient is also low, but the core density of the product is high, and the applicability to polyurethane security doors is not high

Images