不同粒径尺寸MoS_(2)对PA10T的非等温结晶行为影响  

Effect of particle size of MoS_(2) on non⁃isothermal crystallization behavior of Polyamide 10T

作　　者：刘欣磊 韦联川 张伟臻 李源 张琦[1] 庄毅 张师军[1,2] LIU Xinlei;WEI Lianchuan;ZHANG Weizhen;LI Yuan;ZHANG Qi;ZHUANG Yi;ZHANG Shijun(SINOPEC(Beijing)Research Institute of Chemical Industry Co,Ltd,Beijing 100013,China;SINOPEC Group,Beijing 100728,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013 [2]中国石油化工集团公司,北京100728

出　　处：《中国塑料》2025年第4期8-13,共6页China Plastics

摘　　要：将不同粒径尺寸的二硫化钼(MoS_(2))通过熔融共混法填充到半芳香族高温聚酰胺10T(PA10T)中,制备了PA10T/MoS_(2)复合材料。采用差示扫描量热法(DSC)研究了PA10T及其复合材料在不同降温速率下的非等温结晶行为,对比了不同粒径尺寸MoS_(2)对PA10T的结晶行为影响,采用Jeziorny法和Mo法分别研究PA10T及其复合材料的非等温结晶过程,采用Kissinger法计算PA10T及其复合材料的非等温结晶活化能。结果表明,PA10T本身结晶速率快、结晶时间短。MoS_(2)填充PA10T后,结晶温度范围变大,半结晶时间延长,结晶速率减缓,且纳米级MoS_(2)在PA10T结晶过程中克服的潜在势垒所需能量更低。采用Jeziorny法和Mo法研究结果都得到MoS_(2)的粒径尺寸对PA10T非等温结晶速率影响不显著。在一定范围内的降温速率下,PA10T加工成型过程可以采用纳米级或微米级MoS_(2)填充PA10T作为调控其结晶速率的有效手段。Polyamide 10T(PA10T)/MoS_(2) composites were prepared by incorporating MoS_(2) into semi-aromatic polyam-ide PA10T through melt blending.Differential scanning calorimetry(DSC)was conducted to study the non-isothermal crystallization behavior of PA10T and its composites at different cooling rates.The effect of particle size of MoS_(2) on the crystallization behavior of PA10T was investigated.The non-isothermal crystallization kinetics of PA10T and its com-posites was studied by using the Jeziorny′s and Mo′s methods,and their non-isothermal crystallization activation energy was calculated by using Kissinger’s method.The results indicated that the crystallization rate of PA10T was fastened and its crystallization time was shortened.After being filled with MoS_(2),the PA10T composites demonstrated a larger crystallization temperature range,an extended half-crystallization time,a slowed crystallization rate,and a lower poten-tial barrier required for nanoscale MoS_(2) to overcome in the crystallization process of PA10T.The analysis results ob-tained from the Jeziorny′s and Mo′s methods indicated that the MoS_(2) with different particle sizes had no significant effect on the non-isothermal crystallization rate of PA10T.In a certain range of cooling rates,incorporating nanometer or mi-cron MoS_(2) into PA10T can be adopted as an effective means to control the crystallization rate of PA10T in its processing.

关 键 词：半芳香族聚酰胺 聚对苯二甲酰癸二胺 填料 二硫化钼 非等温结晶 差示扫描量热法 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]