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热塑性粘性泡沫材料可以用于防止、延迟或阻止外界物质进入用于军事或执法目的的受保护的材料或区域。本文通过对热塑性粘性泡沫材料的配方设计,采用不同量的热塑性弹性体(异戊二烯或KratonD)、胶粘剂(石油树脂)、氯化石蜡和有机硅表面活性剂,以甲苯为溶剂,在室温下制备了不同配比的压敏胶粘剂(PSA)。真空抽取溶剂后,测试了配方的稳定性和粘接性能。将不同的发泡剂与最佳配方进行混合,研究和比较了粘性泡沫的膨胀倍率和泡沫稳定性(t1/2)。将2种发泡剂(CHClF2和CO2)与最佳配方组成物(由60份异戊二烯、40份石油树脂、50份有机硅表面活性剂、250份氯化石蜡组成)在压力容器中进行混合,然后减压至常压得到一种密度为20kg/m3、泡沫稳定性为30min(t1/2)的热塑性粘性泡沫材料。
Thermoplastic viscous foams can be used to prevent, delay, or prevent foreign matter from entering protected materials or areas for military or law enforcement purposes. In this paper, we designed the formulation of thermoplastic viscous foams by using different amounts of thermoplastic elastomers (isoprene or KratonD), adhesives (petroleum resins), chlorinated paraffins and silicone surfactants, toluene as solvent, Different proportions of pressure-sensitive adhesives (PSA) were prepared. After extracting the solvent in vacuum, the formulation stability and adhesion properties were tested. Different foaming agents were mixed with the best formulation, and the expansion ratio and foam stability (t1 / 2) of viscous foam were studied and compared. Two blowing agents (CHClF2 and CO2) were mixed with the best formulation composition (consisting of 60 isoprene, 40 parts petroleum resin, 50 parts silicone surfactant, 250 parts chlorinated paraffin) in a pressure vessel Were mixed and then depressurized to atmospheric pressure to obtain a thermoplastic viscous foam having a density of 20 kg / m3 and a foam stability of 30 min (t1 / 2).