Conjugate polyether, polyurethane raw material composition, polyurethane foams and applications thereof

Abstract

The invention provides conjugate polyether, comprising 6-8 parts of polyether polyol EP-330N, 2-4 parts of polyether polyol SU-450L, 0.06-0.15 parts of non-hydrolytic surface active agent, 1.5-2 parts of water, 0.8-1.5 parts of nonyl phenol polyoxyethylene ether NP-10, 0.03-0.05 part of foaming catalyst PC52, 0.3-0.5 part of foaming catalyst NE300 and 1.3-2 parts of ethyl diethyl phosphate. The invention further provides a polyurethane raw material composition, polyurethane foams and applications thereof. Compared with the conventional polyurethane foams, the polyurethane foams in the invention have low density, low mass, proper aperture ratio, good sound-proofing effect, and good heat insulating effect, and compared with the polyurethane foams with middle and high density, the cost of the polyurethane foams in the invention is lower. While the polyurethane foams in the invention have low density, the polyurethane foams can reach the application standards of thermal insulation materials, sound-proofing materials, sandwich panels for construction, spraying materials for ceilings of automobiles or filling materials and the like. The conjugate polyether is a total-moisture foaming system, has no damage to ozone layer and has the advantage of environmental protection.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a combined polyether, a polyurethane raw material composition, polyurethane foam prepared from the principle composition and its application. Background technique [0002] Polyurethane rigid foam is the best among all insulating materials at present, and is widely used as heat insulating and structural materials in construction, transportation, refrigerator freezers, petrochemical pipelines, aviation and military, etc. With the increasing shortage of energy in the world, it is the current development trend to use resources reasonably, reduce energy consumption and increase environmental protection. At present, the spray foam used in domestic building wall insulation requires a density greater than 35kg / m 3 , the density applied to the sandwich panel is 40-45kg / m 3 , the density of thermoplastic polyurethane sprayed on the roof of the car is greater than 25kg / m 3 , are medium and hi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem that the existing low-density polyurethane foam has greatly increased thermal conductivity, reduced dimensional stability, and significantly reduced strength compared with medium- and high-density polyurethane foams, so that it is difficult to meet the requirements of interior wall materials, building materials, etc. Sandwich panels, car roof spraying materials, etc., defects such as poor thermal insulation effect, provide a combined polyether, a raw material composition of polyurethane foam, and polyurethane foam prepared from the raw material composition