摘要
以天然鳞片石墨为原料,用化学氧化法制备可膨胀石墨,再经高温膨胀后进行超声制备纳米石墨微片。将纳米石墨微片、球形石墨以及天然鳞片石墨分别与聚苯醚/聚苯乙烯共混物进行共混得到复合材料。研究这3种石墨对复合材料蠕变性能的影响。结果表明:添加纳米石墨微片的复合材料耐蠕变性能优于添加球形石墨、天然鳞片石墨和未添加石墨的,其在50℃,6 MPa,2 500s的蠕变应变比聚苯醚/聚苯乙烯共混物的降低了45.2%。
The expandable graphite was prepared with natural flake graphite by chemi cal oxidization methods. Then nano-graphile sheets were prepared by ultrasound after ex- pansion at a high temperature. The composites were obtained by blending nano-graphite sheets or spherical graphite or natural flake graphite with polyphenylene oxide（PPO）/poly- styrene（PS）blend respectively. Effects of these three kinds of graphite on the creep proper- ties of the composites were studied. The results show that the creep resistance of thecom- posites with nano-graphi^e sheets is better than that of the composites with spherical graphite or natural flake graphite, or without graphite. At 50 ℃,6 MPa,2 500 s, the creep strain of the composiles with nano-graphite sheets is reduced by 45.2%in compari- sion to that of PPO/PS blend.
出处
《现代塑料加工应用》
CAS
北大核心
2015年第1期22-25,共4页
Modern Plastics Processing and Applications
关键词
纳米石墨微片
球形石墨
天然鳞片石墨
聚苯醚
聚苯乙烯
蠕变
nano-graphite sheets
spherial graphite
natural flake graphite
polypheny lene oxide
polystyrene
creep
