【摘要】 工业发展对透明ABS树脂的韧性提出了更高的要求。采用乳液接枝聚合技术在聚丁二烯乳胶粒子上接枝苯乙烯和甲基丙烯酸甲酯合成了核壳增韧粒子。将其与聚甲基丙烯酸甲酯和苯乙烯-丙烯腈共聚物共混，制备透明ABS树脂。分析了核壳增韧粒子的壳层厚度及双峰分布橡胶粒子的协同增韧效应对透明ABS树脂的力学性能、光学性能及加工性能的影响。实验结果表明，以235 nm的聚丁二烯胶乳为增韧核芯，合成核壳比为60/40的核壳增韧粒子，以103 nm的聚丁二烯胶乳为增韧核芯，合成核壳比为65/35的核壳增韧粒子，二者以7/3的质量比混合增韧得到的透明ABS树脂力学性能最佳，冲击强度为184.4 J/m,透光率大于85%。更多还原

【Abstract】 Industrial development had placed higher demands on the toughness of transparent ABS resins. In the article, core-shell toughened particles were synthesized by grafting styrene and methyl methacrylate on polybutadiene latex particles using emulsion graft polymerization technology. The transparent ABS resin was prepared by blending with poly(methyl methacrylate) and styrene-acrylonitrile copolymer. The effects of the shell thickness of the core-shell toughened particles and the synergistic toughening effect of the bimodal distribution of the rubber particles on the mechanical, optical and processing properties of the transparent ABS resin were explored. The experimental results finally showed that the core-shell toughened particles with a core-shell ratio of 60/40 were synthesized by using 235 nm polybutadiene latex as the toughened core, and the core-shell toughened particles with a core-shell ratio of 65/35 were synthesized by using 103 nm polybutadiene latex as the toughened core, and the mechanical properties of the transparent ABS resins obtained from the mixing of the two toughened particles at a mass ratio of 7/3 were optimal with an impact strength of the impact strength was 184.4 J/m, and the light transmittance was higher than 85%.更多还原