Vehicle-used slowly-springback polyurethane foam composite material

Abstract

The invention discloses a vehicle-used slowly-springback polyurethane foam composite material which is compounded from slowly-springback polyurethane foam and an ethylene-vinyl acetate copolymer. The slowly-springback polyurethane foam is prepared from following components including, by weight, an A material: 40-80 parts of a polyether polyol 1421, 5-40 parts of a polyether polyol 2000D, 5-40 parts of a polyether polyol POP-36 / 28, 0.5-5 parts of diethanolamine, 1-6 parts of water, 0.1-1.5 parts of a catalyst EF-600, 0.1-0.5 parts of a catalyst ZF-10 and 1-6 parts of a silicone oil L-580; a B material: 40-80 parts of a modified MDI. During preparation of the slowly-springback polyurethane foam, a weight usage amount ratio of the A material to the B material is 100:40-80. The vehicle-used slowly-springback polyurethane foam is high in reaction activity, is low in toxicity, is environmental-protective, is high in damp loss factor, is high in sound-insulation performance and is free of addition of a foam-forming agent.

Description

technical field [0001] The invention relates to the technical field of automobile sound insulation, in particular to a slow-rebound polyurethane foam composite material for automobiles. Background technique [0002] Now, the automobile field is developing more and more rapidly, and the requirements for sound insulation performance are getting higher and higher, especially in the aspect of sound insulation of automobile engines, a material with good sound insulation effect is needed. [0003] However, many sound insulation materials are currently used in the market, and their sound insulation performance is not very ideal. In order to achieve high sound insulation performance of the material, it is often used in combination with some materials with a porous structure inside, and the internal porous structure is used to improve Sound dissipation effect, to achieve the purpose of sound insulation, such as: conventional polyurethane foam, cotton felt, etc. The slow rebound poly...

AI Technical Summary

Problems solved by technology

However, this method of adding a pore opening agent often leads to the rough surface of the prepared material and the uneven distribution of pores, which not only cannot effectively improve the sound insulation performance, but also has a certain destructive effect on the strength and toughness of the material itself. Affect the use effect and life of the material

In addition, toluene diisocyanate is mostly used as one of the reaction raw materials in the market at present, but the material has low reactivity, which is not conducive to the improvement of sound insulation performance, and the raw material itself is volatile and highly toxic, causing certain safety hazards to the on-site production personnel

In addition, in the preparation process of the prior art, organotin catalysts are often used, which are highly toxic and have great safety hazards, which are not conducive to the use in automotive interiors

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