Low-smell environment-friendly polyurethane soft foam material as well as preparation method and application thereof

Abstract

The invention relates to a low-smell environment-friendly polyurethane soft foam material as well as a preparation method and application thereof. According to the invention, the polyurethane soft foam material prepared from a low-smell catalyst compound, low-volatile silicone oil, a gas capturing matter, low-smell polyether polyhydric alcohols and polymer polyhydric alcohols has an obvious effect in the aspect of reducing smell and TVOC. In the compound bulk foaming technique and the molding foaming technique provided by the invention, the low-smell environment-friendly polyurethane soft foam material has the characteristics of technology stability, quick curing, low smell in production processes, environmental protection, and the like.

Description

technical field [0001] The invention belongs to the technical field of flexible polyurethane foam, and in particular relates to a low-odor environment-friendly polyurethane flexible foam material and its preparation method and application. Background technique [0002] Due to its special open-cell structure, polyurethane flexible foam has low density, good elastic recovery, sound absorption, breathability, heat preservation and other properties. Its main uses include furniture cushions, mattresses, vehicle seat cushions and other cushions. Including industrial and civil use, it is also used as filter material, shockproof material, decorative material, sound insulation material, packaging material and heat insulation material. [0003] TVOC is the English abbreviation of volatile organic compounds. The World Health Organization (WHO, 1989) defines total volatile organic compounds (TVOC) as the volatile organic compounds whose melting point is lower than room temperature and w...

AI Technical Summary

Problems solved by technology

[0004] The main raw materials used in the existing polyurethane flexible foam include isocyanate, polyether polyol, foam starting catalyst, foam gel catalyst, silicone oil, etc. The catalysts, especially some traditional amine catalysts, will release during the foaming process A large amount of odor volatiles cannot meet people's requirements for high environmental protection, low odor, low emission and TVOC

[0005] Li Jian and other researchers have prepared environmentally friendly low-density foams by selecting low-unsaturation, high-activity polyether and other raw materials, but still using traditional amine catalysts, which cannot really meet the needs of environmental protection; China Publication Patent CN104558492A discloses a low-odor and highly flame-retardant polyurethane interior foam for vehicles, mainly by adding reactive flame retardants to reduce odor, but the odor and VOC produced by traditional catalysts have not been improved; Chinese published patent CN101280518A A method for preparing polyurethane foam with low VOC content is disclosed. Although the odor of the foam can be reduced to a certain extent, the process is relatively complicated

[0006] At present, there is no more effective method that can significantly reduce the odor and TVOC of polyurethane flexible foam while ensuring that the performance of polyurethane flexible foam and the processing and molding process are not affected, so that it can meet the requirements of environmental protection as much as possible.

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