Vehicle-used slowly-springback polyurethane foam composite material

A polyurethane foam and composite material technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of strength, toughness, uneven distribution of pores, hidden safety hazards, etc., and achieve slow resilience It can last longer, increase the transmission path, and ensure the connectivity effect

A polyurethane foam and composite material technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of strength, toughness, uneven distribution of pores, hidden safety hazards, etc., and achieve slow resilience It can last longer, increase the transmission path, and ensure the connectivity effect

CN104149455AActive Publication Date: 2014-11-19NINGBO TUOPU GROUP CO LTD
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  • Vehicle-used slowly-springback polyurethane foam composite material
  • Vehicle-used slowly-springback polyurethane foam composite material
  • Vehicle-used slowly-springback polyurethane foam composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] First, the following proportions by weight: polyether polyol 1421, polyether polyol 2000D, polyether polyol POP-36 / 28, diethanolamine, water, catalyst EF-600 (as sold by Momentive) , catalyst ZF-10 and silicone oil L-580, put into a plastic beaker, stir with an electric stirrer, fully mix, obtain A material, stand-by; then press A material:B material=100:60 weight proportion, weigh a certain amount A large amount of modified MDI (such as MDI-2412 sold by Hemu New Materials (Shanghai) Co., Ltd.), quickly mixed with material A, stirred for 6-8s, and quickly poured into 400*200*150mm aluminum with EVA sheet at the bottom During mold making, keep the mold temperature at 56°C, open the mold after 5-7 minutes, and cut into 10mm slow-rebound polyurethane foam sheets for experimental testing.

[0053] Industrial production adopts large-capacity and high-efficiency reactors, fully and quickly stirs according to the weight ratio of each component, prepares material A, and then in...

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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...

Claims

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Application Information

Patent Timeline
19 Nov 2014
Publication
CN104149455A
IPC
B32B27/08; B32B27/30; B32B27/40; C08G18/76; C08G18/63; C08G18/48; C08G18/32; C08G18/18; C08J9/08; C08G101/00
Inventors
杨海忠; 何剑杰