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采用3种包覆剂对两种可膨胀石墨进行了表面包覆,测试了包覆前后可膨胀石墨的膨胀性能,结果表明包覆剂1对可膨胀石墨的膨胀性能无明显影响,包覆剂2和包覆剂3使可膨胀石墨的膨胀倍率增加。此外,测试了由不同包覆剂处理的可膨胀石墨制备的发烟剂对毫米波的衰减性能,结果表明包覆剂对毫米波衰减性能有一定影响,其中包覆剂2的影响显著。
Three kinds of coating agents were used to coat the two kinds of expandable graphite. The swelling properties of the expandable graphite before and after coating were tested. The results showed that the coating agent 1 had no obvious effect on the swelling property of expandable graphite. 2 and coating agent 3 increase the expansion ratio of the expandable graphite. In addition, the attenuation performance of millimeter smoke by the expandable graphite-prepared fume treated with different coating agents was tested. The results show that the coating agent has certain influence on the millimeter wave attenuation performance, and the effect of coating agent 2 is significant.