以废印刷电路板(PCB)非金属粉对丁苯橡胶(SBR)进行填充改性,采用机械共混法制备了SBR/废PCB粉复合材料,考察了SBR接枝马来酸酐(SBR-g-MAH)、硅烷偶联剂KH-792的引入对SBR/废PCB粉复合材料力学性能及硫化特性的影响。结果表明:SBR-g-MAH和KH-792均能有效提升SBR/废PCB粉复合体系的界面强度,SBR/SBR-g-MAH最佳配比为60/40(质量比,下同),硅烷偶联剂KH-792的最佳用量为3%(质量分数),SBR-g-MAH对复合材料的改性效果优于KH-792。当SBR/SBR-g-MAH并用比为60/40,废PCB粉填充量为20份时,复合材料的综合力学性能最佳。改性后的SBR/废PCB粉复合材料的最小扭矩(Fmin)、最大扭矩(Fmax)和正硫化时间(t90)均高于纯SBR,而焦烧时间(t10)低于纯SBR。
Styrene butadiene rubber(SBR) composites were prepared by mechanical blending method filled with nonmetallic powder from waste printed circuit boards.The effects of maleic anhydride grafted styrene butadiene rubber (SBR-g-MAH),silane coupling agent KH-792 on mechanical and vulcanizing properties of composites were investigated.The results showed that both SBR-g-MAH and KH-792could improved the interfacial bonding strength of SBR/waste PCB effectively,the optimal ratio of SBR/SBR-g-MAH was 60/40,the optimal dosage of KH-792 was 3%,the modified effect of SBR-g-MAH on the composites was better than that of KH-792.When the ratio of SBR/SBR-g-MAH was 60/40 and the content of waste PCB was 20phr,the composites had the best mechanical properties.The minimum torque (Fmin),maximum torque(Fmax) and positive sulfuration time(t90) of SBR/waste PCB were higher than that of vulcanized SBR after modification,but burning time(t10) decreased.
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基金资助
江苏省环境材料与环境工程重点实验室课题(K12032);2016年江苏省高等学校大学生创新创业训练计划(201613102003Y);常州工程职业技术学院科研重点项目(KJ14303)
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