摘要
采用固相后缩聚工艺制备了一系列熔体质量流动速率不同的SA型透明聚酰胺(SATPA),研究了固相缩聚后SATPA的动态热机械性能和静态热机械性能。研究结果表明,固相缩聚后SATPA在玻璃化转变温度下有β、γ两个次级转变;随着熔体质量流动速率的减小,其玻璃化转变温度升高,耐热性明显提高,刚性增大,耐寒性稍有下降;玻璃化转变温度随着压力的增加而降低。
By solid state poly-condensation, four SA type transparent polyamide （SATPA） with different melt flow rates were developed. The dynamic mechanical properties and thermal mechanical properties of four semi-aromatic transparent polyamides were studied. Results showed, after solid polycondensation, SATPA had β、γ two relaxations. With the decreasing of the melt flow rate, the temperature of α, β and γ transition moved to higher temperature, which indicated that its thermal resistance improved and cold resistance declined. The glass transition temperature of SATPA reduced when pressure increased.
出处
《塑料工业》
CAS
CSCD
北大核心
2011年第6期64-66,70,共4页
China Plastics Industry
基金
郑州市科技创新团队项目(10CXTD159)
关键词
透明聚酰胺
固相缩聚
动态热机械性能
静态热机械性能
Transparent Polyamide
Solid State Polycondensation
Dynamic Thermal Mechanical Property
Static Thermal Mechanical Property
作者简介
蒋爱云，女，1981年生，讲师，主要从事复合材料和工程塑料的研究和开发。aiyunjiang@126．com
