废旧丁腈橡胶粉和空心玻璃微珠改性丙烯腈-丁二烯-苯乙烯共聚物复合材料的研究

采用废旧丁腈橡胶粉(WNBR)和硅烷偶联剂改性的空心玻璃微珠(HGB)对丙烯腈-丁二烯-苯乙烯共聚物(ABS)改性,分别研究WNBR和改性HGB用量对WNBR/ABS和改性HGB/WNBR/ABS复合材料结构和性能的影响。结果表明:在WNBR/ABS复合材料中,WNBR用量较小时,WNBR粒子与ABS基体相容性较差,界面结合力较弱;WNBR用量为20份时,WNBR和ABS相容性较好,断面较平整光滑。WNBR可以降低复合材料的拉伸强度和弯曲强度,提高冲击强度。在改性HGB/WNBR/ABS复合材料中,改性HGB呈单分散状,没有团聚,分布比较均匀。改性HGB在用量低于5份时可以同时提高改性HGB/WNBR/ABS复合材料的拉伸强度、弯曲强度和冲击强度,用量为5份时复合材料的综合物理性能最佳。

Study on Hollow Glass Beads/Waste NBR Powder/ABS Composites

The acrylonitrile-butadiene-styrene copolymer(ABS)was modified with waste NBR powder(WNBR)and silane coupling agent modified hollow glass beads(HGB),and the effects of addition level of WNBR and modified HGB on the structure and physical properties of composites were investigated.The results showed that,for WNBR/ABS composite,when the addition level of WNBR was low,the compatibility between WNBR and ABS was poor,and interaction between WNBR and ABS was weak.When the addition level of WNBR was 20 phr,the compatibility between WNBR and ABS was better,and the cross section was flat and smooth.WNBR could be used to increase the impact strength of WNBR/ABS composite,but the tensile strength and flexural strength were decreased.For modified HGB/WNBR/ABS composite,modified HGB was finely dispersed with no agglomeration,and uniformly distributed.Modified HGB could be used to increase the tensile strength,flexural strength and impact strength of modified HGB/WNBR/ABS composite when the addition level was less than 5 phr.The comprehensive physical properties of the composite were optimized when the addition level of modified HGB was 5 phr.