摘要
研究了臭氧化反应对超高摩尔质量聚乙烯(UHMWPE)熔体流动性、摩擦磨损性能以及结晶性能的影响。经臭氧化反应,UHMWPE发生降解,粘均摩尔质量从2650kg/mol降低到566kg/mol,熔体质量流动速率从0增加到0·28g/10min。随臭氧化处理时间的增加,材料摩擦系数和磨损量基本不变,UHMWPE优异的磨擦磨损性能得以保持。DSC分析结果表明,随臭氧化反应时间的增加,UHMWPE熔融焓增加,结晶度增加。
The effect of ozonization on the melt flow rate （ MFR）, friction and wear behaviors, and the crystallinity of UHMWPE were studied. By means of the degradation of ozonization, the viscosity average molecular weight of UHMWPE decreases from 2 650 kg,/mol to 566 kg/mol and the MFR increased from 0 g/10 min to 0.28 g/10 min. With the increase of the ozonization time, the friction coefficient and the wear scar width changed a little, the excellent wear resistance of the ozonized UHMWPE could be kept efficiently. The results of DSC analysis showed that the melting enthalpy and crystallinity of the ozonized UHMWPE increased.
出处
《塑料工业》
CAS
CSCD
北大核心
2005年第9期53-55,共3页
China Plastics Industry
