端硅氧烷基低聚物/环氧树脂复合体系的耐酸碱性能研究  

Acid and Basic Resistance Properties of Epoxy Resin/ Siloxane-terminated Organic Oligomers Composite Systems

作　　者：唐忠锋 刘平桂[1] 赫丽华[1] 梁兴泉[3] 林宝凤[3] 

机构地区：[1]北京航空材料研究院 [2]广西大学化学化工学院,南宁530004 [3]广西大学化学化工学院

出　　处：《材料工程》2005年第7期47-50,58,共5页Journal of Materials Engineering

基　　金：航空基础科学基金资助项目(04H21009)

摘　　要：利用-OH与-NCO的亲核加成反应,直接合成了星型硅氧烷封端的1,1,1-三羟甲基丙烷(TMP)-聚己内酯三元醇的系列复合低聚物TPSi-A, TPSi-B和TPSi-C.利用合成的低聚物对环氧树脂进行复合改性,通过溶胶-凝胶技术及胺类固化剂与环氧基的交联作用固化复合体系.研究了低聚物TPSi含量、TPSi中TMP含量及硅烷偶联剂(KBE-9103)对固化的复合体系溶胀性能、耐酸碱性能的影响.结果表明:20%(质量分数,下同)含量的低聚体TPSi改性环氧树脂体系溶胀度最高达40%, 20%～30%范围内低聚体改性体系的耐酸碱性优,同时发现TMP的加入会使体系的耐酸碱性变差.A series of star siloxane-terminated oligomers containing 1,1,1-trihydroxylmethylpropane (TMP) and polycaprolactone triol (PCL), i.e. TPSi-A, TPSi-B and TPSi-C were directly synthesized via -OH and -NCO nucleophilic addition reaction. Epoxy resin was then modified with these oligomers. The modified systems were cured with amino curing agent via amino-glycidyl reaction and sol-gel technology. The effects of TMP, silane coupling agent (KBE-9103 selected) and the contents of oligomers on the swelling properties and acid, basic-resistance performances were studied. Experimental results showed that swelling degree of the cured system in toluene was up to 40% when 20% (mass fraction) TPSi oligomer was used in the modified epoxy resin system. Acid and basic resistance properties of the modified system were improved evidently, when 20%~30% (mass fraction) oligomers were composited in the system. However, acid and basic resistance properties of the modified system decreased with TMP increased.

关 键 词：环氧树脂 星型硅氧烷基低聚物 溶胶-凝胶技术 耐酸性 耐碱性 

分 类 号：TQ630.4[化学工程—精细化工]