摘要
以聚四亚甲基醚二醇(PTMG)、甲苯二异氰酸酯(TDI),二甲硫基甲苯二胺(DMTDA,E-300)为原料,甘氨酸-氯化钡半有机晶体(GBD)为分散粒子,采用预聚法制备了聚氨酯/甘氨酸-氯化钡半有机晶体复合材料,并用几种测试方法考察了GBD对复合材料微观和宏观性能的影响。红外测试结果表明,GBD晶体与复合材料中氨酯羰基及软链段中的醚基均有作用,氨酯羰基的氢键化程度提高;力学测试表明,与纯聚氨酯(PU)相比,PU/GBD复合材料的耐撕裂强度有较大幅度的提高,拉伸强度有所提高;原子力显微镜和动态力学性能测试结果表明,GBD晶体的加入对PU的微相分离有促进作用。
Based on polytetramethylene（PTMG）and toluene diisocyanate（TDI-100）,using 3,5-dimethylthioltoluenediamine（DMTDA,E-300）as raw materials and semi-organic crystal of glycine-barium chloride（named GBD）prepared by the aqueous solution as dispersed particles,polyurethane（PU）/glycine-barium chloride semi-organic crystal composites were prepared by the pre-polymerization method.Influence of the GBD content on the composite performance of composites with different chain extension coefficient was examined.The infrared test results show that the GBD crystal has effect with ammonia ester carbonyl and ether base of soft chain segment in composite materials,the hydrogen-bonding degree of urethane carbonyl groups in PU increases;mechanical tests show that compared with pure PU,the tear strength of PU/GBD composites increases dramatically,tensile strength increases;the AFM and DMA test results show that the addition of GBD crystals has a promoting effect on the PU micro-phase separation.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2016年第7期136-141,146,共7页
Polymer Materials Science & Engineering
基金
山西省自然科学基金资助项目(2013011011-3)
关键词
半有机晶体
氢键
醚基
微相分离
semi-organic crystals
hydrogen bond
ether group
micro-phase separation
