合成橡胶工业
閤成橡膠工業
합성상효공업
China Synthetic Rubber Industry
2015年
6期
480-484
,共5页
丙烯腈-丁二烯-苯乙烯共聚物%丁腈橡胶%氯化聚乙烯%交联聚丙烯酸钠%动态硫化%吸水膨胀%物理机械性能%微观形貌
丙烯腈-丁二烯-苯乙烯共聚物%丁腈橡膠%氯化聚乙烯%交聯聚丙烯痠鈉%動態硫化%吸水膨脹%物理機械性能%微觀形貌
병희정-정이희-분을희공취물%정정상효%록화취을희%교련취병희산납%동태류화%흡수팽창%물리궤계성능%미관형모
acrylonitrile-butadiene-styrene copolymer%ni-trile rubber%chlorinated polyethylene%crosslinked poly(sodi-um acrylate)%dynamic vulcanization%water-swelling%me-chanical property%morphology
以交联聚丙烯酸钠(CPNaAA)为吸水材料,通过动态硫化法制备了基于丙烯腈-丁二烯-苯乙烯共聚物(ABS)/丁腈橡胶(NBR)/氯化聚乙烯(CM)热塑性硫化胶(TPV)的吸水膨胀橡胶(WSR),考察了 CPNaAA 用量对 WSR 物理机械性能和吸水性能的影响,研究了 WSR 的微观形貌。结果表明,在实验范围内,ABS/ NBR/ CM/ CPNaAA WSR 的应力-应变行为均表现出“软而韧”的弹性体特征,随着CPNaAA 用量的增加,WSR 的拉伸强度、扯断伸长率、永久变形和撕裂强度均呈下降趋势,邵尔 A 硬度略有提高,WSR 的吸水率、吸水速率及脱水失重率提高,当 CPNaAA 用量为70份时,室温下95 h WSR即达到吸水平衡状态,此时吸水率为369．8%；与第1次的最大吸水率相比,第2次及第3次的最大吸水率仅有小幅降低,但第2次及第3次的初始吸水速率远大于第1次的初始吸水速率,脱水失重率明显降低；CPNaAA 在 TPV 中分散均匀,未出现团聚现象,但表面结构松散,与 TPV 之间的界面作用较弱；WSR吸水干燥后表面出现明显的缝隙和孔洞。
以交聯聚丙烯痠鈉(CPNaAA)為吸水材料,通過動態硫化法製備瞭基于丙烯腈-丁二烯-苯乙烯共聚物(ABS)/丁腈橡膠(NBR)/氯化聚乙烯(CM)熱塑性硫化膠(TPV)的吸水膨脹橡膠(WSR),攷察瞭 CPNaAA 用量對 WSR 物理機械性能和吸水性能的影響,研究瞭 WSR 的微觀形貌。結果錶明,在實驗範圍內,ABS/ NBR/ CM/ CPNaAA WSR 的應力-應變行為均錶現齣“軟而韌”的彈性體特徵,隨著CPNaAA 用量的增加,WSR 的拉伸彊度、扯斷伸長率、永久變形和撕裂彊度均呈下降趨勢,邵爾 A 硬度略有提高,WSR 的吸水率、吸水速率及脫水失重率提高,噹 CPNaAA 用量為70份時,室溫下95 h WSR即達到吸水平衡狀態,此時吸水率為369．8%；與第1次的最大吸水率相比,第2次及第3次的最大吸水率僅有小幅降低,但第2次及第3次的初始吸水速率遠大于第1次的初始吸水速率,脫水失重率明顯降低；CPNaAA 在 TPV 中分散均勻,未齣現糰聚現象,但錶麵結構鬆散,與 TPV 之間的界麵作用較弱；WSR吸水榦燥後錶麵齣現明顯的縫隙和孔洞。
이교련취병희산납(CPNaAA)위흡수재료,통과동태류화법제비료기우병희정-정이희-분을희공취물(ABS)/정정상효(NBR)/록화취을희(CM)열소성류화효(TPV)적흡수팽창상효(WSR),고찰료 CPNaAA 용량대 WSR 물리궤계성능화흡수성능적영향,연구료 WSR 적미관형모。결과표명,재실험범위내,ABS/ NBR/ CM/ CPNaAA WSR 적응력-응변행위균표현출“연이인”적탄성체특정,수착CPNaAA 용량적증가,WSR 적랍신강도、차단신장솔、영구변형화시렬강도균정하강추세,소이 A 경도략유제고,WSR 적흡수솔、흡수속솔급탈수실중솔제고,당 CPNaAA 용량위70빈시,실온하95 h WSR즉체도흡수평형상태,차시흡수솔위369．8%；여제1차적최대흡수솔상비,제2차급제3차적최대흡수솔부유소폭강저,단제2차급제3차적초시흡수속솔원대우제1차적초시흡수속솔,탈수실중솔명현강저；CPNaAA 재 TPV 중분산균균,미출현단취현상,단표면결구송산,여 TPV 지간적계면작용교약；WSR흡수간조후표면출현명현적봉극화공동。
The water-swellable rubber ( WSR) was pre-pared by dynamically vulcanization with acrylonitrile-butadi-ene-styrene copolymer/ nitrile rubber/ chlorinated polyethylene thermoplastic vulcanizate (TPV) as matrix and crosslinked po-ly( sodium acrylate) ( CPNaAA) as super water-absorbent. Effects of CPNaAA amount on the mechanical properties, wa-ter-swelling behavior and morphology of the prepared WSR were investigated. The results showed that all the stress -strain curves of the WSR behaved as a typical elastomer with soft and tough characters. With increasing CPNaAA, the ten-sile strength, elongation at break, permanent set and tear strength of the WSR decreased, Shore A hardness increased slightly, and the water-swelling ratio, water-swelling rate and mass loss increased significantly. Moreover, the WSR with 70 phr CPNaAA incorporation achieved the equilibrium swell-ing in 95 h immersion with 369. 8% water-swelling ratio. Com-pared to the maximum water-swelling ratio in the first water-swelling, those in the second and third water-swelling only de-creased slightly, while the second and third water-swelling be-haviors of WSR showed a significantly rapid equilibrium swell-ing and remarkable decrease of weight loss. The CPNaAA par-ticles were dispersed randomly in the TPV and the interfacial in-teraction between the CPNaAA and TPV was weak; some gaps were found in the surface of the dried water-swelled sample.
