生物基PA56/PA11的力学、结晶和流变性能研究  

Mechanical,Crystalline and Rheological Properties of Bio-Based PA56/PA11 Blends

作　　者：毛旭升 刘小超 李景波 刘跃军[1] 于洪涛 宁辉翔 郑继超 邱瀚霖 陈璟 MAO Xusheng;LIU Xiaochao;LI Jingbo;LIU Yuejun;YU Hongtao;NING Huixiang;ZHENG Jichao;QIU Hanlin;CHEN Jing(College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007

出　　处：《包装学报》2024年第2期15-23,共9页Packaging Journal

基　　金：国家自然科学基金资助项目(11872179,12372245);湖南省自然科学基金资助项目(2019JJ50132,2020JJ5136,2020JJ5137);长沙市科技计划基金资助项目(kh2201380)。

摘　　要：采用生物基PA56有望替代传统石油基尼龙,实现尼龙材料的减碳降碳,然而PA56韧性不足的问题限制其广泛应用。采用生物基PA11通过熔融共混增韧PA56,系统研究了PA56/PA11的相容性、结晶行为、热性能和力学性能。结果发现:共混物只有一个T_(g),说明PA56和PA11在共混物中具有较好的相容性;PA11的加入使PA56的结晶度和结晶温度有所降低,但对其的熔融温度影响不大;PA11的加入能够有效提升混合材料的韧性,在PA11质量分数为40%时,共混物的断后伸长率由PA56的5.27%提高到了44.26%,提高了739.8%;PA11质量分数为20%时,冲击强度由PA56的4.519 MPa提高到5.569 MPa,提高了23.2%。PA11的加入可有效提高PA56的韧性,提升生物基尼龙材料的综合性能,拓宽其应用领域。The adoption of bio-based PA56 is expected to replace traditional petroleum-based nylon and achieve carbon reduction of nylon materials.However,the problem of insufficient toughness of PA56 limited its wide applications.Bio-based PA11 was used to toughen PA56 by melt blending,and the compatibility,crystalline behaviour,thermal and mechanical properties of PA56/PA11 were systematically investigated.The results revealed that the blends had only one T_(g),indicating that PA56 and PA11 had better compatibility in the blends.The addition of PA11 decreased the crystallinity and crystallization temperature of PA56,but had little effect on its melting temperature.The addition of PA11 effectively enhanced the toughness of the blends,and the elongation at break of the blend increased by 739.8%from 5.27%for pure PA56 to 44.26%with the addition of PA11 at a content of 40%.The impact strength increased by 23.2%from 4.519 MPa of pure PA56 to 5.569 MPa with PA11 content of 20%.The addition of PA11 effectively improved the toughness of PA56,enhanced the comprehensive properties of bio-based nylon materials,and broadened its application field.

关 键 词：尼龙56 尼龙11 熔融共混 增韧 

分 类 号：TB332[一般工业技术—材料科学与工程]