全氘代低密度、微孔聚苯乙烯泡沫的制备  

STUDY ON THE FABRICATION OF LOW-DENSITY,MICROPOROUS PERDEUTERATED POLYSTYRENE FOAMS

作　　者：罗炫[1] 张林[1] 杜凯[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《高分子材料科学与工程》2006年第1期203-206,共4页Polymer Materials Science & Engineering

基　　金：中国工程物理研究院科学技术基金资助(20030869)

摘　　要：采用聚合物溶液的热致相分离技术,并通过冷冻干燥制备出具有开放状网络孔洞结构的低密度全氘代聚苯乙烯泡沫。采用扫描电镜对泡沫结构进行表征,结果表明,在密度为0.02 g/cm3~0.2 g/cm3时,其平均孔径对应为0.2μm^10μm。利用1H-核磁共振、应力-应变实验和热分析仪器对最终氘代聚苯乙烯泡沫的氘代率、力学性能和热稳定性能进行了分析。By the general thermally-induced phase separation （TIPS） technique and freezingdry technology, it can fabricate the low-density, microporous perdeuterated polystyrene foams used in inertial confinement fusion. The structures of the foams are opened-cell and isotropic. As the density of deuterated polystyrene foams is 0.02 g/cm^3 to 0.1 g/cm^3, the average cell size is 0.2 μm ～10 μm, and the deuterated ratio is 98.5%. By the stress-strain compression and thermal analysis, the mechanical performance and thermal stability of polymeric foams were characterized.

关 键 词：氘代聚苯乙烯 低密度泡沫 热致相分离 冷冻干燥 

分 类 号：TQ328.4[化学工程—合成树脂塑料工业]