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发明授权
CN106380825B 一种用于拼镶环换能器的聚氨酯透声橡胶 有权 转让

一种用于拼镶环换能器的聚氨酯透声橡胶
摘要：
本发明公开了一种用于拼镶环换能器的聚氨酯透声橡胶，聚氨酯透声橡胶由以下重量份的原料组成：浇注型聚氨酯预聚体95份、硬脂酸2份、改性稀土超细氧化物粉末11份、改性超细硅酸铝6份、硫磺2份、炭黑N330为9份、微晶石墨粉4份、二硫代氨基甲酸稀土促进剂2份、促进剂PZ3份、环氧树脂5份、催化剂2份、防老剂3份和二胺类扩链剂4份。本发明的聚氨酯透声橡胶具有优秀的韧性、耐磨性、抗疲劳强度和耐老化性等综合性能，使用周期长，具有良好的耐寒性，即使在零下温度也不易出现结晶现象，同时，经耐水性能测试，本发明的聚氨酯橡胶的透水系数达到2.3×10‑10g·cm/cm2·h·Pa，其水密性良好，密封性能优异。
摘要（英）：

The invention discloses a polyurethane acoustic-transmission rubber for spliced-ring energy converters. The polyurethane acoustic-transmission rubber is composed of the following raw materials in parts by weight: 95 parts of cast-type polyurethane prepolymer, 2 parts of stearic acid, 11 parts of modified rare-earth superfine oxide powder, 6 parts of modified superfine aluminum silicate, 2 parts of sulfur, 9 parts of carbon black N330, 4 parts of microcrystalline graphite powder, 2 parts of rare-earth dithiocarbamate accelerator, 3 parts of accelerator PZ, 5 parts of epoxy resin, 2 parts of catalyst, 3 parts of anti-aging agent and 4 parts of diamine chain extender. The polyurethane acoustic-transmission rubber has the advantages of excellent toughness, excellent wear resistance, excellent fatigue resistance, excellent aging resistance and other excellent comprehensive properties, has the characteristics of long use period and favorable cold resistance, and can not have the phenomenon of crystallization even at subzero temperature. The water resistance test proves that the permeation coefficient of the polyurethane rubber reaches 2.3*10<-10>g.cm/cm<2>.h.Pa; and the polyurethane acoustic-transmission rubber has favorable water tightness and excellent sealing property.

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