改性高吸水树脂制备吸水膨胀橡胶及其性能  

Preparation and Performance of Water Swellable Rubber Based on Modified Superabsorbent Resin

作　　者：吴江渝[1] 何紫莹[1] 李秀辉[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430073

出　　处：《材料工程》2014年第6期40-44,50,共6页Journal of Materials Engineering

基　　金：国家自然科学基金青年基金项目(51003081)

摘　　要：以丙烯酸(AA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、二烯丙基二甲基氯化铵(DADMAC)为单体合成高吸水树脂(SAR)。利用疏水单体丙烯酸丁酯(BA)对高吸水树脂进行改性,并与丁腈橡胶共混制备吸水膨胀橡胶(WSR)。研究了P(AA/BA)含量对SAR、WSR吸水性能及WSR力学性能的影响。结果表明:P(AA/BA)含量达到SAR质量的33.3%(质量分数,下同)时,SAR的吸水率仅降低了8.49%;当P(AA/BA)含量为23.1%时,WSR的拉伸强度和断裂伸长率均达到最大值,吸水性能达到最佳,WSR质量流失率降低到5.8%。P(AA/BA)的引入改善了SAR和丁腈橡胶的相容性,提高了WSR的使用性能。Superabsorbent resin（SAR）was synthesized from comonomers acrylic acid（AA）,2-acrylamide-2-methylpropane sulfonic acid（AMPS）and diallyldimethylammonium chloride（DADMAC）.Modification of SAR was performed using butyl acrylate（BA）as the hydrophobic modifier.Water swellable rubber（WSR）was then prepared with SAR and nitrile butadiene rubber（NBR）through physical blending method.The effects of P（AA/BA）content on the water absorbency of SAR and WSR and on the mechanical property of WSR were investigated.The results show that the water swelling ratio of SAR decreases only 8.49% when the P（AA/BA）content reaches 33.3% of SAR（mass fraction,the same below）.When the P（AA/BA）content is 23.1%,WSR achieves the best performance in terms of tensile strength,breaking elongation,and water absorbency,showing a low mass loss of 5.8%.The introduction of P（AA/BA）enhances the compatibility of SAR with NBR and improves the practical performance of WSR.

关 键 词：吸水膨胀橡胶 高吸水树脂 疏水改性 吸水性能 相容性 

分 类 号：TQ336[化学工程—橡胶工业]