Environment-friendly composition for thermoplastic polyurethane foam and application thereof

Abstract

The invention discloses an environment-friendly composition for thermoplastic polyurethane foam and application thereof. Polyether polyol A, polyether polyol B and polyester polyol C are used as mainraw materials, an organosilicon surfactant, a pore opening agent, a catalyst, water and an emulsifier are used as assistants, no chlorofluorocarbon physical foaming agent is added, and the compositionhas a good environmental effect; the emulsifier is an environment-friendly product, and the composition does not contain a nonylphenol emulsifier, and is non-toxic and harmless to a human body; meanwhile, a reactive catalyst is adopted, so that organic volatile matters in the foam product are reduced. The thermoplastic polyurethane foam obtained through foaming is of an open-cell structure, the foam density is 30 kg / m<3>, the compressive strength is larger than or equal to 100 kPa, the aperture ratio is larger than or equal to 90%, the elongation at break is larger than or equal to 10%, and good sound absorption performance and good heat preservation performance are achieved.

Description

technical field [0001] The invention relates to an environment-friendly thermoplastic polyurethane foam composition and the thermoplastic polyurethane foam prepared by foaming the composition, belonging to the technical field of chemical synthesis. Background technique [0002] Sound absorption and sound insulation are important measures for noise reduction in automobiles. The materials used must be environmentally friendly, light in weight, good in strength, corrosion-resistant, and insect-proof. Thermoplastic polyurethane foam is a porous material and the pores are interconnected to form continuous voids, which have the functions of sound absorption and noise reduction; at the same time, thermoplastic polyurethane foam has the advantages of strong foam density, excellent mechanical properties, and mildew resistance; therefore, 80% of high-end cars currently use thermoplastic Polyurethane foam is used as a sound insulation material, and thermoplastic polyurethane foam also ...

AI Technical Summary

Problems solved by technology

Most of the compositions currently on the market add a cell opener, such as Evonik Specialty Chemicals O-501. After adding a cell opener, the composition is prone to delamination during placement, and it needs to be mixed again before use; at the same time, the composition Physical blowing agents are also added, such as fluorodichloroethane (HCFC-141b), dichloromethane, pentafluoropropane (HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC -365mfc) and other low-boiling blowing agents to assist foaming and cell opening, these blowing agents have problems with ozone depletion potential (ODP) and / or high greenhouse gas effect (GWP)

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