TDI用于CaCO_3/低密度不饱和聚酯树脂发泡的研究  

Application of TDI in foaming of CaCO_3/low density unsaturated polyester resin

作　　者：季高峰[1] 王晓钧[1] 李超[1] JI Gao-feng WANG Xiao-Jun LI Chao(College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China)

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《热固性树脂》2017年第2期32-37,共6页Thermosetting Resin

基　　金：南京工业大学开放实验室基金(2016DC085)资助

摘　　要：以甲苯二异氰酸酯(TDI)为发泡剂,CaCO_3为填料制备了CaCO_3/低密度不饱和聚酯树脂(CaCO_3/LDUPR)发泡制品。通过理论分析和红外光谱实验确定TDI可以用作制备CaCO_3/LDUPR样品的发泡剂。通过表观密度和压缩强度的测试,结合扫描电子显微镜的分析,确定了采用TDI制备CaCO_3/LDUPR发泡制品的最佳条件。结果表明:当TDI质量分数为4%,CaCO_3质量分数为30%时,由TDI制备的CaCO_3/LDUPR样品的表观密度达到(0.48±0.02)g/cm3,比压缩强度为(37.19±1.49)MPa·g-1·cm3。TDI制备的CaCO_3/LDUPR样品的微观孔结构和性能均优于MDI和AIBN制备的发泡样品。The calcium carbonate/low density unsaturated polyester resin （CaCO3 / LDUPR） forming material was prepared using toluene diisocyanate （TDI） as foaming agent and calcium carbonate （CaCO3） as filler. It was determined that the TDI could be used as as a foaming agent for the preparation of CaCO3 / LDUPR samples by theoretical analysis and infrared spectroscopy experiments. The optimum conditions for the preparation of CaCO3 / LDUPR foamed products by TDI were determined by the measurements of apparent density and compressive strength, combined with scanning electron microscopy （SEM）. The results showed that the apparent density of CaCO3 / LDUPR prepared by TDI was （0.48 ± 0.02） g / cm^3 and the compressive strength was （37.19 ± 1.49） MPa·g^-1·cm^3 when the mass fraction of TDI and CaCO3 was 4% and 30% ,respectively. The pore structure and properties of CaCO3 / LDUPR prepared by TDI were better than those prepared by MDI and AIBN.

关 键 词：低密度不饱和聚酯树脂 甲苯二异氰酸酯 碳酸钙 表观密度 比压缩强度 

分 类 号：TQ323.42[化学工程—合成树脂塑料工业]