| 发明名称 |
POLYURETHANE SOFT FOAM HAVING SOUNDPROOFNESS AND VIBRATION ATTENUATING PROPERTY AND ITS PRODUCTION AND SOUNDPROOF BODY |
| 摘要 |
<p>The present invention relates to polyurethane foam materials with sound insulating and vibration damping properties. They are obtainable by reacting a polyisocyanate or polyisocyanate prepolymers with an excess of polyols or a mixture thereof while maintaining an NCO index of </=80, in particular </=70 and as a result they have an adhesive (frictional) surface and are further characterized by a density of 80 to 250 kg/m3, a modulus of elasticity less than 300 OOO N/m2 and a loss factor of at least 0.4. The production is preferably done by adding the reaction components (polyol system on the one hand and polyisocyanate system on the other) to the mixture head of an RIM machine. The polyurethane soft foam materials with an adhesive surface according to the invention are particularly suitable for use as vibration damping sound insulation systems in automobiles.</p> |
| 申请公布号 |
JPS63260916(A) |
申请公布日期 |
1988.10.27 |
| 申请号 |
JP19880080214 |
申请日期 |
1988.03.31 |
| 申请人 |
STANKIEWICZ ALOIS DR GMBH |
发明人 |
ERUNSUTO ROOMARU;GERUHARUTO BURAKU |
| 分类号 |
B29C45/00;B32B5/20;B32B5/24;B60R13/08;C08G18/00;C08G18/08;C08G18/48;C08G101/00;C08J9/02;G10K11/168 |
主分类号 |
B29C45/00 |
| 代理机构 |
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