接枝反应温度和时间对NBR/CNC-g-AA复合材料性能的影响  

Effects of grafting reaction temperature and time on properties of NBR/CNC-g-AA composites

作　　者：刘苏苏[1] 王辉 洪子通 刘广永[1] LIU Susu;WANG Hui;HONG Zitong;LIU Guangyong(Key Laboratory of Rubber and Plastic Materials and Engineering,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《弹性体》2023年第2期72-76,共5页China Elastomerics

基　　金：山东省自然科学基金项目(ZR2020QE079)。

摘　　要：利用溶液法,以硝酸铈铵为引发剂,将丙烯酸(AA)接枝到纤维素纳米晶(CNC)上进行改性得到接枝产物丙烯酸接枝纤维素纳米晶(CNC-g-AA),并且与丁腈橡胶(NBR)共混,制备NBR/CNC-g-AA复合材料,研究接枝反应温度和反应时间对NBR/CNC-g-AA复合材料硫化特性、力学性能和耐磨性能的影响。结果表明,CNC-g-AA在1720 cm-1处出现红外吸收峰,说明CNC-g-AA制备成功;接枝反应温度和反应时间对NBR/CNC-g-AA复合材料的硫化特性无明显影响规律,但是对其拉伸性能和耐磨性能有着不同影响规律,并且当接枝反应温度为35℃、反应时间为60 min时,NBR/CNC-g-AA复合材料的拉伸性能和耐磨性能均达到最优值。Using solution method,acrylic acid(AA)was grafted onto the cellulose nanocrystallites(CNC)by taking ammonium cerium nitrate as the initiator,and then the grafted CNC-g-AA was obtained.The influences of grafting reaction temperature and time on the curing characteristics,tensile properties and abrasion resistance of NBR/CNC-g-AA composites were investigated.The results show that the absorption peak of the grafted CNC at 1720 cm-1 is detected by Fourier transform infrared spectroscopy(FTIR),indicating that the acrylic acid has been grafted to CNC.No obvious changes are obtained for the effects of grafting reaction temperature and time on the curing characteristics of NBR/CNC-g-AA composites.For tensile properties and abrasion resistance,however,different results are shown.The tensile properties and abrasion resistance of NBR/CNC-g-AA composites are the best when the reaction temperature and time are 35℃and 60 minutes,respectively.

关 键 词：纤维素纳米晶 丁腈橡胶 接枝反应 力学性能 

分 类 号：TQ333.4[化学工程—橡胶工业]