发明名称 |
Anechoic material of reduced weight |
摘要 |
Anechoic coatings. The invention consists in dispersing a high percentage of hollow glass or Bakelite microbeads, a low percentage of lead powder and an intermediate percentage of air microbubbles in a matrix of polyurethane or of another suitably chosen viscoelastic material. It makes it possible to obtain anechoic materials which are relatively light.
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申请公布号 |
FR2580286(A1) |
申请公布日期 |
1986.10.17 |
申请号 |
FR19850005558 |
申请日期 |
1985.04.12 |
申请人 |
SINTRA |
发明人 |
MARIE-THERESE MUNIER ET CHRISTIAN VOIFFRAY;VOIFFRAY CHRISTIAN |
分类号 |
G10K11/16;(IPC1-7):C08K13/04 |
主分类号 |
G10K11/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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