烟花用发射药主要是黑火药,黑火药燃烧过程中产生大量烟雾,严重影响烟花的观赏效果,造成环境污染.为解决烟花发射过程中产生烟雾量大的问题,设计了一种新型微烟发射药,其各组分配比为:NC 77%,NH4CIO41 3%,端羟基聚丁二烯(HTPB)5%和钝感剂5%,对微烟发射药和黑火药的点火与做功能力、烟雾性能及机械感度进行了对比测试.结果表明:微烟发射药产生的烟雾量较黑火药降低79.5%;微烟发射药的点火延迟时间为72.7 ms,压力冲量为320.0 MPa·ms,点火性能较黑火药有所改善,做功能力增强28%;机械感度符合要求.%Black powder is usually used as propellant in fireworks industry. To solve problem of the huge smoke produced in fireworks, a new smokeless propellant was designed with the formula of: NC 77％, NH4ClO4 13％, HTPB 5％ and deterrent material 5％. Its ignition and working capacity, smoke performance and mechanical sensitivity of smokeless propellant were tested and compared with that of black powder. Results show that the smoke volume of smokeless propellant decreases by 79.5％ compared to black powder. The ignition has been delay time and pressure impulse of smokeless propellant are 72.7 ms and 320.0 MPa · ms,which indicates the ignition performance has been improved. The working capacity is increasd by 28％ compared with black powder. The mechanical sensitivity meet the requirements of propellant used in fireworks.
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