摘要
端羧基丁腈橡胶(CTBN)经改性后得到f-CTBN(含端双羟基);然后以f-CTBN和PEG(聚乙二醇)为主要原料,采用逐步聚合法合成了高支化嵌段PU(聚氨酯);最后分别以H12MDI(4,4′-二环己基甲烷二异氰酸酯)或HDI(l,6-己二异氰酸酯)为固化剂,制备相应的浇铸体。研究结果表明:f-CTBN/PEG-1000/HDI基PU材料表面存在许多呼吸型微孔,其强度和模量较高、韧性良好,在生物医学领域,尤其是医用薄膜产品方面具有极大的应用潜力。
With carboxyl-terminated nitrile rubber（CTBN） as modifier,a bishydroxyl-terminatedf-CTBN was prepared. Then,with f-CTBN and PEG（polyethylene glycol） as main raw materials,a hyperbranched block PU （polyurethane） was synthesized by stepwise polymerization. Finally,with H12MDI （4 ;4＇ -dicyelohexyl methane diisoeyanate） or HDI （1,6-hexyl diisocyanate） as curing agent,the corresponding casting was prepared. The research results showed that there are many breathing micropores on PU＇s surface based on f-CTBN/PEG-1000/HDI,and the PU had immense application potential in the biomedical field,especially in medical film products because its strength and modulus were higher and toughness was good.
出处
《中国胶粘剂》
CAS
北大核心
2012年第8期37-40,共4页
China Adhesives
基金
西安文理学院中青年科研基金项目(kyc201014)
陕西省分析化学重点学科基金项目
关键词
高支化聚氨酯
端羧基丁腈橡胶
聚乙二醇
呼吸型
医用薄膜
hyperbranched polyurethane
carboxyl-terminated nitrile rubber（CTBN）
polyethylene glycol
breathing
medical film
