【摘要】 用纳米SiOX 粒子对 2 98# 不饱和聚脂 (UPR)进行增强、增韧改性 ,发现随粒子用量增加 ,树脂凝胶时间、粘度增大 ;粒子用量为 0 .5 %时树脂有脆韧转变现象 ;用量为 3%时 ,拉伸强度和断裂延伸率分别提高约 33%和 6 0 %。用KH - 5 70偶联剂进行表面处理有助于提高纳米SiOX 粒子在UPR中的均匀分散。更多还原

【Abstract】 The type 298# UPR(Unsaturated Polyester Resin)was toughened and strengthened by using the nanometer SiO X powder. The results show that gel time and viscosity of 298# UPR increased greatly while increasing the content of nanometer SiO X powder; an brittle-tough transformation was observed at the critical content of 0.5% of nanometer SiO X powder. The tensile strength and elongation at break of the resin increase by 33% and 60% from the pure resin respectively when the content of nanometer SiO X is 3%. SiO X powder surface treatment with the KH-570 coupling agent can improve uniform dispersing of nanometer SiO X in the resin.更多还原