聚氨酯/氨基乙酸-溴化钙半有机晶体复合材料的制备与性能

采用水溶液蒸发法合成氨基乙酸-溴化钙（GCB）半有机晶体,以聚己内酯、甲苯二异氰酸酯为原料,二甲硫基甲苯二胺为扩链剂,GCB为分散粒子,通过预聚法制备了不同扩链系数的聚氨酯（PU）/GCB复合材料,并考察了其性能。结果表明,与PU相比,PU/GCB复合材料的微相分离程度明显提高;GCB使PU中氨酯羰基的氢键化程度有较大提高;GCB的加入对PU的耐热性能没有明显作用;GCB的加入使复合材料的拉伸强度和撕裂强度均有所提高,扯断伸长率呈现先减小后增大的趋势,当扩链系数为0.95、GCB质量分数为2%时,复合材料的拉伸强度和撕裂强度达到最大值,比纯PU分别提高了14%和24%。...

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Bibliographic Details
Published in合成橡胶工业 Vol. 39; no. 2; pp. 108 - 113
Main Author 吴怡康 吕志平 佟玉超 孙建 彭紫强
Format Journal Article
LanguageChinese
Published 太原理工大学精细化工研究所,太原,030024 2016
Subjects
力学性能
动态力学性能
半有机晶体
微相分离
氢键
氨基乙酸-溴化钙
聚氨酯
预聚法
半有机晶体
氢键
氨基乙酸-溴化钙
dynamic mechanical property
动态力学性能
glycine calcium bromide
mechanical property
pre-polymerization
聚氨酯
力学性能
预聚法
microphase separation
微相分离
polyurethane
semi-organic crystal
hydrogen bond
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ISSN1000-1255

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Summary:采用水溶液蒸发法合成氨基乙酸-溴化钙（GCB）半有机晶体,以聚己内酯、甲苯二异氰酸酯为原料,二甲硫基甲苯二胺为扩链剂,GCB为分散粒子,通过预聚法制备了不同扩链系数的聚氨酯（PU）/GCB复合材料,并考察了其性能。结果表明,与PU相比,PU/GCB复合材料的微相分离程度明显提高;GCB使PU中氨酯羰基的氢键化程度有较大提高;GCB的加入对PU的耐热性能没有明显作用;GCB的加入使复合材料的拉伸强度和撕裂强度均有所提高,扯断伸长率呈现先减小后增大的趋势,当扩链系数为0.95、GCB质量分数为2%时,复合材料的拉伸强度和撕裂强度达到最大值,比纯PU分别提高了14%和24%。
Bibliography:WU Yi-kang, LU Zhi-ping, TONG Yu-chao, SUN Jian, PENG Zi-qiang （Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China）
polyurethane; glycine calcium bromide; semi-organic crystal; pre-polymerization; microphase separation; hydrogen bond; dynamic mechanical property; mechanical property
62-1036/TQ
Semi-organic crystal glycine calcium bromide（ GCB） was synthesized by evaporation method from aqueous solution, and polyurethane（ PU） /GCB composites was prepared using prepolymerization method with polycaprolactone,toluene diisocyanate as materials, dimethythiotoluene diamine as chain extender and GCB as disperse particles,the properties of the composites were investigated. The results showed that the degree of microphase separation of PU / GCB composites improved significantly compared with PU materials.The addition of GCB made the hydrogen-bonding degree of urethane carbonyl groups in PU improving evidently,but had no obviously effect on heat resistance of PU materials. The tensile s
ISSN:1000-1255