摘要
采用硅烷偶联剂对玻璃纤维进行改性,并探讨螺杆转速和螺杆组合对阻燃增强聚对苯二甲酸丁二醇酯(PBT)力学性能的影响。结果表明:改性玻纤提高了玻纤和基体界面的相互作用,复合材料的拉伸强度、弯曲强度和缺口冲击强度分别提高了10.6%、13%和19.6%;主机螺杆转速过高或螺杆组合的剪切过强都会使玻纤长度低于0.4mm而起不到增强作用,导致材料的力学性能下降。应在保证塑化的前提下,减弱螺杆的剪切,并适当辅与反向剪切块以提高增韧剂的分散性,方可制得综合性能优异的阻燃增强PBT复合材料。
Glass fiber（GF）was treated by silane coupling agent,the influence of screw combination and screw speed on GF reinforced flame retardant PBT was studied.The treated GF improved the interface cohesion,which made the composites＇ tensile strength,flexural strength and notched impact strength increased by 10.6%,13% and 19.6% respectively.The GF will be cutted too short to reinforce the composites by exorbitant screw speed and shearing,which will worsen the mechanical properties of the flame-retardant and reinforce PBT.It is advisable to prepare the excellent flame-retardant and reinforce PBT by lowering the screw shearing on the premise of enough fusion,and negative shear screw block was also need to improve the dispersion.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第12期67-68,88,共3页
New Chemical Materials
基金
福建省教育厅(A)类项目(JA09246)
关键词
PBT
阻燃增强
螺杆组合
力学性能
PBT
flame-retardant and reinforce
screw combination
mechanical property
