Sound-absorbing rigid polyurethane foam composite material for vehicles

A polyurethane rigid foam combination material and vehicle-use technology, applied in the field of polyurethane, can solve the problems of limited application range, poor foam mechanical properties, and low sound absorption coefficient

Active Publication Date: 2020-06-09
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the foam are poor and the sound absorption coefficient is low (the average so

Method used

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  • Sound-absorbing rigid polyurethane foam composite material for vehicles
  • Sound-absorbing rigid polyurethane foam composite material for vehicles
  • Sound-absorbing rigid polyurethane foam composite material for vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of component A:

[0038] Accurately measure 58 parts of polyether polyol A (functionality 3, molecular weight 4700), 16 parts of polyester polyol (2 functionality, molecular weight 300), 15 parts of polyether polyol B (functionality 3, molecular weight 500) , 1.5 parts of chain extender ethylene glycol, 3 parts of diethylene glycol, catalyst tetramethyliminodipropylamine Jeffcat Z-130 (U.S. Huntsman Company) 0.3 parts, N, N, N'-trimethyl- N'-hydroxyethyl bisaminoethyl ether Jeffcat Z-10 (U.S. Huntsman company) 0.2 part, pentamethyldiethylenetriamine Polycat 5 (Evonik Industrial Group) 0.15 part, surfactant Tegostab B 8870 (win 0.85 parts of Evonik Industrial Group), 2 parts of Ortegol 501 (Evonik Industrial Group), and 3 parts of water were put into the reaction kettle, stirred and mixed for 2 hours, and sealed and packaged.

[0039] Component B: polymethylene polyphenyl polyisocyanate

[0040] The materials of components A and B are mixed and reacted acco...

Embodiment 2

[0042] Preparation of component A:

[0043] Accurately measure 60 parts of polyether polyol A (functionality 3, molecular weight 6000), 20 parts of polyester polyol (2 functionality, molecular weight 660), 10 parts of polyether polyol B (functionality 4, molecular weight 700) , chain extender glycerol 4.5 parts, catalyst N-methyl-N-(dimethylaminopropyl) aminoethanol Polycat 17 (Evonik Industrial Group) 0.5 parts, N, N-bis(dimethylaminopropyl) ) Isopropanolamine Jeffcat ZR-50 (U.S. Huntsman Company) 0.5 part, catalyst bis(2-dimethylaminoethyl) ether Polycat BL-17 (Evonik Industrial Group) 0.1 part, surfactant AK-8805 ( Jiangsu Meisid Chemical Co., Ltd.) 0.15 parts, surfactant AK-6680 (Jiangsu Meisid Chemical Co., Ltd.) 0.75 parts, surfactant AK-9905 (Jiangsu Meisid Chemical Co., Ltd.) 1.5 parts, Put 2 parts of water into the reaction kettle, stir and mix for 2 hours, take out the material after sampling and testing, and seal the package;

[0044] Component B: polymethylene po...

Embodiment 3

[0047] Preparation of component A:

[0048] Accurately measure 46 parts of polyether polyol A (functionality 3, molecular weight 3000), 23.5 parts of polyester polyol (2 functionality, molecular weight 2000), 18 parts of polyether polyol B (functionality 3, molecular weight 300) , 7 parts of chain extender dipropylene glycol, catalyst N, N-dimethylaminoethyl-N'-methylaminoethanol Jeffcat ZR-110 (U.S. Huntsman Company) 0.2 parts, 2,2-bismorpholino diethyl Base ether Dabco DMDEE (Evonik Industrial Group Company) 0.5 part, surfactant L-580 (Momentive) 0.7 part, Tegostab B 8523 (Evonik Industrial Group Company) 0.2 part, water 3.9 parts, put into the reaction kettle, stir and mix 2 hours, after sampling and testing, discharge and seal the package.

[0049] Component B: polymethylene polyphenyl polyisocyanate

[0050] The materials of components A and B are mixed and reacted according to the weight ratio of A:B=100:95 to prepare foam, and the quality of the product is tested.

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PUM

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Abstract

The invention discloses a sound-absorbing polyurethane rigid foam composite material for vehicles, which is composed of a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of polyether polyol A; 15 to 25 parts of polyester polyol; 10 to 20 parts of polyether polyol B; 2-7 parts of a chain extender; 0.8 to 3.0 parts of a surfactant;0.5 to 1.5 parts of a catalyst; and 2.0 to 4.0 parts of water; the component B is prepared from polymethylene polyphenyl polyisocyanate as a raw material; wherein the polyether polyol A is polypropylene oxide-polyoxyethylene polyol with the functionality of 3 and the molecular weight of 3,000 to 9,000; wherein the polyester polyol is phthalic anhydride polyester polyol with the functionality of 2-3 and the molecular weight of 300-2000; and the polyether polyol B is polypropylene oxide polyol with the functionality of 3-4 and the molecular weight of 300-1000.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a sound-absorbing polyurethane rigid foam composition. Background technique [0002] With the maturity of automobile technology, the mechanical performance and comfort performance of the automobile itself have become important standards to measure the quality of automobiles, and noise is one of them. [0003] Automobile noise is a comprehensive noise source including noise of various natures. According to frequency, it can be divided into structure-borne noise mainly in the low frequency range (30-500Hz) and air-borne noise in the medium and high frequency range (500-8000Hz); according to the source, It can be divided into exterior noise and interior noise. The noise outside the vehicle refers to the part of the noise radiated from various parts of the vehicle to the space outside the vehicle, mainly including engine noise, body and chassis noise, horn noise and aerodynamic...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08J9/30C08G101/00C08L75/06C08L75/08
CPCC08G18/6607C08G18/6611C08G18/4837C08G18/4816C08G18/4208C08G18/4018C08G18/3206C08J9/30C08J2375/06C08J2375/08
Inventor 周鹏李同绪赵修文
Owner LIMING RES INST OF CHEM IND
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