摘要
通过原位聚合法用蜜胺甲醛树脂包覆六硝基六氮杂异伍兹烷（HNIW）。以三聚氰胺、甲醛为原料，聚乙烯醇为增韧剂，碳酸钠为催化剂，制成预聚物溶液，与ε-HNIW共混滴加氯化铵溶液使预聚物固化成壳包覆HNIW。用FTIR、光学显微镜及机械撞击感度验证了钝感包覆效果。结果表明包覆较好，特性落高风。比原料提高了10.3cm。根据ε-HNIW的晶型热稳定性及蜜胺甲醛树脂的制备方法，讨论了包覆的最佳工艺条件。在蜜胺和甲醛之比是1：2．5，预聚体形成阶段反应pH值为8～9，原位聚合包覆阶段pH值为4～5，反应温度为70℃时可使ε-HNIW得到较好的包覆。
ε-HNIW coated with melamine-formaldehyde resin was prepared by in-situcondensatesation polymerization from ε-HNIW as the core material , melamine and formallne as wall materials. The coated ε-HNIW was characterized on structure, morphologies, thermal properties and impact sensitivity. It showed that ε-HNIW was well-coated and the sensitivity was reduced as the H50 increased by 10.3 cm. The optimum reaction conditions are as follows ： the mole ratio of melamine to formaldehyde was 1 ： 2.5, and the pH of preparing prepolymer and in-situcondensatesation step are respectively 8-9 and 4-5, the temperature of in-situcondensatesation step is 70℃.
出处
《含能材料》
EI
CAS
CSCD
2006年第5期333-335,339,共4页
Chinese Journal of Energetic Materials
基金
总装预研基金项目(12060451867)
关键词
材料科学
原位聚合
六硝基六氮杂异伍兹烷
蜜胺树脂
包覆
material science
in-situcondensatesation polymerization
hexanitrohexaazaisowurtzitane （HNIW）
melamine-formaldehyde resin
coating
