通过差示量热(DSC)确定了羟甲基丙烯酸锌(HZMMA)在升温过程中的吸放热特征温度,用原位变温红外光谱法研究了HZMMA的结构变化。结果表明:HZMMA在升温过程中依次发生了结晶熔融吸热、聚合反应放热、高温分解等情况;对应的结构发生了Zn-OH的脱水缩合反应,CH2C—的不饱和双键发生了加聚反应。详细探讨了HZMMA对HZMMA/氢化丁腈橡胶(HZMMA/HNBR)复合材料力学性能和热性能的影响。系统力学测试表明HZMMA能明显提高HZMMA/HNBR复合材料的力学性能,当HZMMA用量为30份时,复合材料的拉伸强度达到最大值。DSC数据显示HZMMA提高了HZMMA/HNBR复合材料的玻璃化转变温度。
The characteristics of the heat absorption and desorption of zinc hydroxide monomethylacrylate (HZMMA) was determined by DSC.The structural change of HZMMA was studied by variable temperature FT-IR.The results showed that HZMMA in turn occurred melting endothermic,exothermic polymerization,high temperature decomposition in the heating process.The corresponding structure underwent the dehydration condensation reaction of Zn-OH and the addition polymerization of CH2C— unsaturated double bond.The effect of HZMMA on mechanical and thermal properties of HZMMA/HNBR (hydrogenated nitrile rubber) composites was discussed in detail.The mechanical tests showed that the mechanical properties of HZMMA/HNBR composites were obviously improved by HZMMA.When the amount of HZMMA was 30 phr,the tensile strength of the composites reached the maximum.DSC data showed that HZMMA promoted the glass transition temperature of HZMMA/HNBR composites.
[1] 杨霄云,陈玉坤,徐传辉.加工方法对动态硫化的聚丙烯/三元乙丙橡胶/甲基丙烯酸锌复合材料的力学性能影响[J].合成材料老化与应用,2012,41(4):16-20.
[2] Nie Yijing.Strain-induced crystallization of natural rubber/zinc dimethacrylate composites studied using synchrotron X-ray diffraction and molecular simulation[J].Journal of Polymer Research,2015,22(2):1-10.
[3] Ikeda T,Yamada B,Tsuji M,et al.In situ copolymerization behavior of zinc dimethacrylate and 2-(nethylperfluoro-octanesulphonamido) ethyl acrylate in hydrogenated nitrile-butadiene rubber during peroxide crosslinking[J].Polym Int,2015,48(6):446-454.
[4] 柳召刚,李梅,李志强,等.甲基丙烯酸铈补强天然橡胶的性能研究[J].橡胶工业,2016,63(9):535-539.
[5] 郭尚振,庄涛,时金凤,等.氧化锌/甲基丙烯酸对原位合成甲基丙烯酸锌增强三元乙丙橡胶性能的影响[J].合成橡胶工业,2016,39(6):499-503.
[6] 陈朝晖,吴驰,王迪珍.甲基丙烯酸锌在聚丙烯酸酯橡胶中的应用研究[J].高分子材料科学与工程,2003,19(1):220-223.
[7] Lu Yonglai,Liu Li,Zhao Yang,et al.Morphology study on elastomers reinforced by zinc dimethacrylateⅡ in vulcanizates[J].China Synthetic Rubber Industry,2003,26(1):12-16.
[8] Lu Yonglai,Liu Li,Shen Deyan.Infrared study on in situ polymerization of zinc dimethacrylate in poly(α-octylene-co-ethylene) elastomer[J].Polym Int,2004,53(6):802-808.
[9] 赵兴波,张秋禹,尹德忠,等.原位聚合制备HNBR/PZDMA纳米复合材料的结构与性能[J].现代化工,2011,31(12):32-35.
[10] 周瑶,温世鹏,刘力.原位法制备聚甲基丙烯酸钐/丁腈橡胶纳米复合材料及其反应过程[J].合成橡胶工业,2011,34(5):380-384.
[11] 陈晓松,熊煦,周慧,等.废弃硬质聚氨酯泡沫塑料填充增强丁腈橡胶的研究[J].化工新型材料,2018,46(7):262-265.
基金资助
国家自然科学基金(21676150)
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