摘要
以高附着力耐温二元醇(XC-488)、甲苯二异氰酸酯(TDI)、甲基丙烯酸羟乙酯(HEMA)为原料,合成了聚酯型双键封端的聚氨酯预聚物(HPU),然后将不同含量的HPU与不饱和聚酯树脂、短切玻璃纤维、碳酸钙、阻燃剂等进行共混,用于团状模塑料(BMC)的制备。通过傅里叶变换红外光谱、差示扫描量热仪、力学性能、吸水率、熔体流动性、耐酸碱性、耐老化测试和扫描电子显微镜进行测试。结果表明,当HPU的含量为6%(质量分数,下同)时,BMC复合材料的综合力学性能最好,此时复合材料的拉伸强度、弯曲强度、冲击强度分别为(47.24±0.42)MPa、(117.76±0.65)MPa、(33.8±0.2)kJ/m^(2)。
Polyester⁃type double bond⁃terminated polyurethane prepolymer(HPU)was synthesized by using a high adhe⁃sive and high heat⁃resistant diol(XC⁃488),toluene diisocyanate(TDI)and hydroxyethyl methacrylate(HEMA)as raw materials.The bulk molding plastics(BMC)were prepared through blending HPU with unsaturated polyester resin,short cut glass fiber,calcium carbonate,flame retardant at different loadings.Fourier⁃transform infrared spectroscopy,differential scanning calorimeter,mechanical property test,water absorption test,melt fluidity test,acid⁃base resistance test,aging test and scanning electron microscope were used to characterize the structures and properties of the resultant BMC.The results indicated that the composite achieved the optimal comprehensive mechanical properties at an HPU content of 6 wt%.They also achieved tensile strength of(47.24±0.42)MPa,bending strength of(117.76±0.65)MPa and impact strength of(33.8±0.2)kJ/m^(2).
作者
刘雷
杨建军
吴庆云
吴明元
张建安
刘久逸
LIU Lei;YANG Jianjun;WU Qingyun;WU Mingyuan;ZHANG Jianan;LIU Jiuyi(Key Laboratory of Environment-friendly Polymer Materials of Anhui Province,School of Chemistry and Chemical Engineering,Anhui University,Hefei 230601,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2021年第9期34-39,共6页
China Plastics
基金
安徽省2018年度科技重大专项(18030901077)
安徽省高校自然科学研究重点项目(KJ2016A792)。
关键词
团状模塑料
聚氨酯预聚物
双键封端
甲基丙烯酸羟乙酯
bulk molding compound
polyurethane prepolymer
double bond termination
hydroxyethyl methacrylate
