发明名称 |
RADIATION CROSS-LINKING OF PTC CONDUCTIVE POLYMERS |
摘要 |
The higher the voltage applied to an electrical device comprising a PTC conductive polymer, the more likely it is that intermittent application of the voltage will cause the device to fail. According to the invention, the likelihood of such failure is substantially reduced by irradiating the PTC conductive polymer (1) so that it is very highly cross-linked, for example to a dosage of at least 50 Mrads, preferably at least 80 Mrads, especially at least 120 Mrads. In this way, for example, it is possible to make a circuit protection device which will continue to provide effective protection even after repeated exposure to a voltage of 200 volts. |
申请公布号 |
DE3279970(D1) |
申请公布日期 |
1989.11.09 |
申请号 |
DE19823279970 |
申请日期 |
1982.04.02 |
申请人 |
RAYCHEM CORPORATION (A DELAWARE CORPORATION) |
发明人 |
JACOBS, STEPHEN M.;MCTAVISH, MARY SANDRA;TAYLOR, JAMES MICHAEL;DOLJACK, FRANK ANTHONY |
分类号 |
H01B1/20;H01C7/02;(IPC1-7):H01C7/02;H01B1/24 |
主分类号 |
H01B1/20 |
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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