Low-VOC sponge as well as preparation method and application thereof

Abstract

The invention discloses low VOC sponge which comprises the following components: grafted polyether polyol, a highly active polyether polyol, a catalyst, a foam stabilizer, a chain extender, a foamingagent, a flame retardant, RGO / TiO2 nanoparticles, and diphenylmethane diisocyanate. A preparation method comprises the steps: preparing the RGO / TiO2 nanoparticles, preparing finished sponge, preparinga composite fabric, embossing and solarizing. The low VOC sponge is applied to automotive trim. The process is simple, and the VOC content in the composite fabric can be effectively reduced; RGO / TiO2is used as a photoelectron catalyst and does not participate in a chemical reaction, so that a good recyclable catalytic effect is achieved, and the problem of subsequent VOC release of the polyurethane sponge can be continuously and effectively solved; the sponge prepared by the invention is applied to embossing, the embossing forming effect is good, and the pattern appearance is uniform; the problem that a traditional half-ether half-ester polyurethane sponge is uneven in hardness is solved, and the application prospect is wide.

Description

technical field [0001] The invention relates to a sponge, its preparation method and application, in particular to a low-VOC sponge, its preparation method and its application. Background technique [0002] Polyurethane foam is widely used in the automotive interior industry due to its good thermoplasticity, high strength, high elongation, good resilience, wear resistance, oil resistance, solvent resistance, aging resistance and low temperature resistance. The materials used in the synthesis of polyurethane sponge contain a large amount of benzene series and aldehydes. However, due to the production of polyurethane foam and the processing of automobile interiors, a large amount of VOC gas will be generated, which will pollute the environment inside the car and cause great harm to the human body. [0003] At present, the research on VOC reduction of polyurethane foam at home and abroad has not been interrupted, such as using non-volatile or reactive amine catalysts to partia...

AI Technical Summary

Problems solved by technology

This method reduces the VOC produced by polyurethane foam to a certain extent, but the toxic and harmful gas produced by the burning of raw material polyether polyol and foam in the process of automobile interior decoration is still the main source of VOC emissions of polyurethane foam, which seriously limits the production of polyurethane foam. usage of

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