摘要
采用差示扫描量热仪对玻璃纤维(GF)增强聚酰胺66(PA66)复合材料进行了非等温结晶研究;用莫志深法和Kissinger法计算并得到了非等温结晶动力学参数。结果表明,GF对PA66基体具有异相成核作用,可提高其结晶速率;当GF含量为30%(质量分数,下同)时,复合材料的结晶速率最大;在相同时间内,复合材料的结晶度越大,其所需的降温速率越大;PA66、PA66/15%GF、PA66/30%GF、PA66/45%GF的结晶活化能分别为-297.22、-356.32、-481.00、-365.59kJ/mol。
The crystallization behavior of glass fiber reinforced PA66 composites was characterized using DSC. Parameters of isothermal and non-isothermal crystallization kinetics were calculated using of Mo and Kissinger methods. It showed that glass fiber played as a heterogeneous nucleating agent, which increased the crystallization rate of PA66. When the glass fiber content was 30 %, the crystallization rate reached the maximum. The greater the cooling rate, the greater the degree of crystallinity. The crystallization activation energy of the composites were -297. 22, -356. 32, -481. 00, and -365. 59 kJ/mol, respectively, when the glass fiber contents were 0, 15%, 30 %, and 45%.
出处
《中国塑料》
CAS
CSCD
北大核心
2012年第8期31-34,共4页
China Plastics
