环氧树脂和石墨对高氯酸钾类烟火药撞击感度的影响

Effects of Epoxy Resin and Graphite on Impact Sensitivity of KClO_4-type Pyrotechnics Composite

为了揭示高氯酸钾类烟火药的安全性,制备了本工作称为样品1#～7#的7种50/50/m/n-KClO4/Al/环氧树脂/石墨混合物体系(m=n=0;m=3,n=0;m=5,n=0;m=5,n=1;m=5,n=2;m=5,n=3;m=5,n=4)。用GJB772A-1997-601.1,热重-差热分析(TG-DTA)和扫描电子显微镜(SEM)研究了环氧树脂和石墨对高氯酸钾类烟火药撞击感度的影响。结果表明:样品1#～7#的撞击感度爆炸百分数分别为0,60,76,40,12,2和0。与样品1#比较,样品1#中加入环氧树脂使样品2#和3#的撞击感度爆炸百分数升高,且随样品1#中环氧树脂含量的增加,撞击感度爆炸百分数升高。与样品3#比较,样品3#中加入石墨使样品4#～7#的撞击感度爆炸百分数降低,且随样品3#中石墨含量的增加,撞击感度爆炸百分数以4#>5#>6#>7#次序降低。探讨了环氧树脂对KClO4/Al二元体系起增感作用和石墨起减感作用的原因。

To expose the safety of KCIO4-type pyrotechnics composite, seven 50/50/m/n-KClO4/AI/epoxy resin/graphite mixture systems（m=n =0; m =3 ,n =0; m =5 ,n =0; m =5 ,n = 1 ; m =5 ,n =2 ; m =5 ,n =3 ; m =5 ,n =4 ） known as samples 1#-7# in this work were prepared, respectively. The effects of epoxy resin and graphite on the impact sensitivity of KCIO4-type pyrotechnics composite were studied by standard method GJB772A -1997 -601.1 ,TG-DTA and SEM. The results show that the explosion percent of impact sensitivity for samples1 #-7# is 0,60,76,40,12,2 and0,respectively. In comparison with sample l~,adding epoxy resin in samples 1 # makes the explosion percent of impact sensitivity of samples 2# and 3# enhance and with increasing the amount of epoxy resin in samples3#,the explosion percent of impact sensitivity increases. In comparison with sample3~,the addition of graphite into samples 4# makes the explosion percent of impact sensitivity of samples 4# -7# decreases and with increasing the amount of graphite in samples 3#,the explosion percent of impact sensitivity decreases in the order4# 〉5# 〉6# 〉7#. The reasons of sensitization of epoxy resin and desensitization of graphite to the KClO4-Al binary system are discussed.