含活性二氧化硅蓖麻油型聚氨酯互穿网络的物理性质  

PROPERTIES OF CASTOR OIL OF CASTOR OIL-POLYURETHANE IRN CONTAINING INORGANIC FILLER

作　　者：向前[1] 曾木英[1] 谈晓宏[1] 谢洪泉[1] 

机构地区：[1]华中理工大学化学系

出　　处：《合成橡胶工业》1994年第3期133-135,共3页China Synthetic Rubber Industry

摘　　要：以Ｎ，Ｎ－二甲基苯胺、１％（按ＩＰＮ质量计，下同）过氧化二苯甲酰和二丁基二月桂酸锡（简称有机锡）为固化剂，活性二氧化硅为填充剂（用量为总质量的３０％），由４７％的甲基丙烯酸甲酯（ＭＭＡ）与蓖麻油、２，４－甲苯二异氰酸酯型聚氨酯组成的ＩＰＮ为基材，在２５～３０℃下经８～１２ｈ固化。固化材料的体积电阻率和表面电阻率可达１０￣１３数量级，介电常数为５．５～６．０，介电损耗角正切为０．０１８～０．０２０，拉伸强度为５．０４ＭＭＰａ，硬度（邵尔Ａ型）为９３度，吸水率为０．６‰，吸油率为９．５％。研究了有机锡、三乙烯二胺、油酸、乙酰丙酮铝、三水合氧化铝等固化剂第３组分，活性单体ＭＭＡ和苯乙烯，活性二氧化硅、轻质碳酸钙、活性硅微粉等填充剂对固化效果及固化材料物理性质的影响。The castor oil-polyurethane interpenetrating polymer network (CO-PU IPN),which was formed by castor oil TDI methyl methacrylate (MMA)or styrene (St)and filled with inorganic particles such as SiO2 or CaCO3, could be set by the crosslinking agent consisting of N,Ndimethylaniline, benzoyl peroxide and dibutyl dimethylaniline,benzoyl peroxide and dibutyl result presented that the value of volume specific resistance and the surface specific resistance of CO-PU IPN could reach 1013 (Ω·cm or Ω) respectively,the dielectric costant (ε)was within 5.5～60, the tgδ was 0.018～0.020,the tensile strength was 5.04 MPa,the Shore hardness was 93,and the water and oil absorption ratio was 0.06% and 9.5% respectively.The components and setting conditions of CO-PU IPN were investigated.

关 键 词：蓖麻油型 聚氨酯 互穿网络 填料 

分 类 号：O633.21[理学—高分子化学]