黑液-蒙脱土/聚氯乙烯/丁腈橡胶热塑性弹性体的制备及性能研究  

Study on Preparation and Properties of Black Liquor Montmorillonite Complex/PVC/NBR Thermoplastic Elastomer

作　　者：杜鹏[1] 曹仲林[1] 苏胜培[1] 

机构地区：[1]湖南师范大学化学化工学院资源精细化与先进材料湖南省高校重点实验室,湖南长沙410081

出　　处：《精细化工中间体》2011年第3期43-47,共5页Fine Chemical Intermediates

基　　金：国家科技专项科技服务小分队项目(2009GJD20047)

摘　　要：采用蒙脱土对造纸黑液中的木质素进行絮凝沉淀,制备黑液-蒙脱土复合物(BL-MMT),然后将其应用于聚氯乙烯/丁腈橡胶(PVC/NBR)热塑性弹性体,并对其力学性能、耐老化性能及热降解性能进行测试。结果表明:随着BL-MMT中木质素蒙脱土比例增大,热塑性弹性体力学性能先增大后减小,适宜配比m(木质素)∶m(蒙脱土)=1∶1。BL-MMT份数增大,热塑性弹性体力学性能先增大后减小,20份时出现最大值。BL-MMT填充的PVC/NBR热塑性弹性体与添加炭黑和碳酸钙相比,力学性能和热性能相当,而耐老化性能更为优越。黑液-蒙脱土复合物可望用作PVC/NBR热塑性弹性体的补强剂。A black liquor-montmorillonite complex（BL-MMT） was prepared by flocculating precipitation of lignin in black liquor with montmorillonite,and applied in the preparation of PVC/NBR thermoplastic elastomer composites.The mechanical properties,aging performance and thermal properties of the PVC/NBR composites were tested.The experimental results indicated that the mechanical properties of BL-MMT/PVC/NBR composites were affected by the loadings and composition of BL-MMT complex.A high performance was achieved at a lignin/MMT ratio of 1∶1.The mechanical properties of BL-MMT/PVC/NBR increase with the loading of BL-MMT up to 20 phr.A comparison study was also performed using carbon black and calcium carbonate as comparative fillers.There is no significant mechanical and thermal property difference among BL-MMT,carbon black and calcium carbonate as fillers for PVC/NBR composites.However,the aging property of BL-MMT/PVC/NBR was the best.All experimental results indicated that BL-MMT could be an effective reinforcing agent in PVC/NBR thermoplastic elastomer.

关 键 词：黑液 蒙脱土 PVC NBR 热塑性弹性体 

分 类 号：TQ333[化学工程—橡胶工业]