反应增容型马来酸酐/丁腈橡胶接枝共聚物的制备  

Preparation of reactive compatibilizer maleic anhydride/nitrile rubber graft copolymer

作　　者：姚棋[1] 杨隽[1] 徐黎刚 谢浩[1] 杨晓梅[1] 闫霜[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430074

出　　处：《合成橡胶工业》2014年第6期477-480,共4页China Synthetic Rubber Industry

基　　金：武汉工程大学第5届研究生教育创新基金资助项目(CX 2013091)

摘　　要：以过氧化苯甲酰(BPO)为引发剂、马来酸酐(MAH)为接枝单体、四氢呋喃为溶剂,采用溶液接枝法制备了MAH/丁腈橡胶(NBR)接枝共聚物(MAH-g-NBR),考察了MAH及BPO的用量、反应温度对接枝率的影响,并通过傅里叶变换红外光谱和热重分析法对接枝产物进行了表征。结果表明,接枝产物有2个明显的热失重阶段,第1阶段发生在152℃左右,为接枝共聚物的脱羧阶段,第2阶段发生在360℃左右,为NBR分子链的断裂,证明了MAH-g-NBR的存在;在NBR用量为1 g、MAH用量为1.3 g、BPO用量为0.08 g、反应温度为65℃的条件下,MAH-g-NBR的接枝率最高可达4.12%。Graft copolymers of maleic anhydride（ MAH） /nitrile rubber（ NBR）（ MAH-g-NBR） were prepared by graft copolymerization in tetrahydrofuran solvent using benzoyl peroxide（ BPO） as initiater and MAH as grafting monomer. Influence of MAH and BPO amounts and reaction temperature on grafting ratio was investigated. The obtained product was characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis. The results showed that the graft copolymer had two distinct mass-losing stages. The first stage which occurred at about 152 ℃ was attributed to decarboxylation,the second stage（ about 360 ℃） resulted from degradation of NBR,indicating the existence of MAH-g-NBR. The grafting ratio reached up to maximum of 4. 12% when the amounts of NBR,MAH,BPO were 1,1. 3,0. 08 g,respectively and the reaction temperature was 65 ℃.

关 键 词：马来酸酐 丁腈橡胶 过氧化苯甲酰 溶液接枝法 接枝共聚物 接枝率 

分 类 号：TQ333.7[化学工程—橡胶工业]