Environment-friendly polyurethane sponge capable of maintaining hardness
A polyurethane sponge, environmentally friendly technology, applied in the field of household goods manufacturing, can solve problems such as the inability of product quality to remain stable, and achieve the effects of less odor, fast volatilization, and low sensitivity
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[0015] Specific embodiments of the present invention will be further described in detail below. It should be understood that the description of the embodiments of the present invention here is not intended to limit the protection scope of the present invention.
[0016] The invention provides an environment-friendly polyurethane sponge capable of maintaining hardness. Its raw materials are composed of polyether polyol, polymer polyol, toluene diisocyanate, water, foaming agent, silicone oil and composite catalyst. For polyether polyols, it is a mixture of one or more polyether polyols with a molecular weight of 1000-5000, which itself is the basic raw material for the preparation of polyurethane sponges, so it is a prior art, and its characteristics and preparation methods are no longer described here. repeat. The polymer polyol can be formed by free radical graft polymerization at 90° C. to 120° C. under the protection of nitrogen by using basic polyether, vinyl monomer, and...
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