通过制备以亚硝酸钠为内相,油相及表面活性剂为外相的微乳液,在低温和高温环境下对乳胶基质进行敏化.试验结果表明,在低温25℃时,采用微乳液发泡技术在12 min内可以完成敏化,敏化后的基质密度为1.09g/cm3,并具备良好的爆轰性能,采用常规发泡技术在低温情况下30 min内无法完成敏化要求.在高温情况下,微乳液发泡技术在不需要酸催化的作用下,可以在3 min内达到理想的敏化效果,而常规发泡技术则需要在酸催化作用下,经过15 min才可以达到理想的敏化效果.%Microemulsion was prepared by sodium nitrite as inner phase and the oil phase and the surfactant as outer phase, and was applied for emulsion matrix sensitization at low and high temperatures. The test results show that at the temperature of 25℃, sensitization can be completed within 12 min by using the microemulsion foaming technology and a matrix density of 1.09 g/cm3 can be reached with good detonation performance, but is incomplete by the employment of conventional foaming technology at a prolonged time of 30 min. At high temperature, the ideal sensitization can be accomplished within 3 min by using the microemulsion foaming technology without acid catalysis, but it takes more than 15 min when the conventional foaming technology is used with the acid catalyst.
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