TDI型PU/HGM复合材料的制备与性能研究OA
Preparation and Properties Study of TDI Type PU/HGM Composites
以1,4-丁二醇(BDO)、4,4'-亚甲基二(2-氯苯胺)(MCOA)和4,4'-亚甲基双(3-氯-2,6-二乙基苯胺)(MCDEA)3种不同扩链剂与TDI-PTMEG型预聚体、空心玻璃微珠(HGM)制备9种复合材料,探究HGM对聚氨酯弹性体性能的影响.结果表明:添加HGM能够明显降低复合材料的密度,提高硬度,但也在一定程度上降低了拉伸强度和断裂伸长率.而采用硅烷偶联剂(KH550)改性后的HGM可以在维持低密度的同时保证复合材料有更好的力学性能.添加改性HGM可以使MCOA体系密度降低21.0%,将50%热失重温度提高10℃左右,使拉伸强度达到27.61 MPa.
Nine composites were prepared using three different chain extenders,namely 1,4-butanediol(BDO),4,4'-methylenebis(2-chloroaniline)(MCOA),and 4,4'-methylenebis(3-chloro-2,6-diethylaniline)(MCDEA),along with TDI-PTMEG prepolymer and hollow glass microspheres(HGM).The effects of HGM on the properties of polyurethane elastomers were investigated.The results showed that the addition of HGM significantly reduced the density of the composites and increased their hardness,but also decreased the tensile strength and elongation at break to some extent.However,HGM modified with a silane coupling agent(KH550)could ensure better mechanical properties of composites while maintaining a low density.The addition of modified HGM could reduce density of MCOA system by 21.0%,increase temperature of 50%weight loss by about 10℃,and achieve a tensile strength of 27.61 MPa.
巩汉炜;张育林;乔文强;王植源
大连理工大学化工学院高分子材料系,辽宁 大连 116024大连理工大学化工学院高分子材料系,辽宁 大连 116024大连理工大学化工学院高分子材料系,辽宁 大连 116024大连理工大学化工学院高分子材料系,辽宁 大连 116024
化学化工
聚氨酯弹性体空心玻璃微珠甲苯二异氰酸酯
Polyurethane elastomerHollow glass microspheresToluene diisocyanate
《塑料科技》 2026 (1)
57-61,5
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