In view of the phenomenon that the adhesion strength between the surface of polyacrylonitrile-butadiene-styrene-polycarbonate(ABS-PC)copolymer and the electroless copper plating layer is relatively low.To solve the pr...In view of the phenomenon that the adhesion strength between the surface of polyacrylonitrile-butadiene-styrene-polycarbonate(ABS-PC)copolymer and the electroless copper plating layer is relatively low.To solve the problems of poor surface wettability and low surface roughness of the ABS-PC substrate,the N,N-dimethylformamide(DMF)-ethanol(C_(2)H_(5)OH)-water(H_(2)O)system was employed as the swelling system for the ABS-PC substrate.The effects of the DMF volume fraction in the swelling system and the swelling time on the swelling effect of ABS-PC at 35℃were investigated.KMnO_(4)-H_(2)SO_(4)-H_(2)O system was used as the etching system for ABS-PC substrate under the conditions of the volume ratio of water to sulfuric acid of 1﹕2,with KMnO_(4)content of 30 g/L,etching temperature of 60℃,and etching time of 25 min.The results indicate that dense pores with uniform sized are formed on the surface of the ABS-PC substrate surface after swelling and etching treatments,accompanied by an increase in surface roughness when the swelling temperature is 35℃,the DMF volume fraction in the swelling system is 80%,and the swelling time is 5 min.Furthermore,the content of C element on the surface of the ABS-PC substrate decreased,while that of O element increased,and the surface hydrophilicity is enhanced,which is attributed to two hydrophilic groups,-C=O and-COOH,being generated on the ABS-PC substrate surface,significantly improving the wettability of the ABS-PC substrate surface.Under the combination effects of high surface roughness and strong surface hydrophilicity,the adhesion strength between the ABS-PC substrate surface and the electroless copper plating layer reached to 0.81 kN/m,meeting the adhesion strength requirement of 0.70 kN/m in the industrial production.展开更多
以废打印机壳PC/ABS再生粒子(R-PC/ABS)为基体材料,对苯二酚双(二苯基磷酸脂)(HDP)和梯形倍半硅氧烷(TSQ)为阻燃剂,采用熔融共混制备了无卤阻燃PC/ABS,对其阻燃性能、力学性能、尺寸稳定性和负荷热变形温度(HDT)进行分析,结果发现,TSQ...以废打印机壳PC/ABS再生粒子(R-PC/ABS)为基体材料,对苯二酚双(二苯基磷酸脂)(HDP)和梯形倍半硅氧烷(TSQ)为阻燃剂,采用熔融共混制备了无卤阻燃PC/ABS,对其阻燃性能、力学性能、尺寸稳定性和负荷热变形温度(HDT)进行分析,结果发现,TSQ可以阻燃R-PC/ABS,并且,对力学性能、尺寸稳定性和HDT影响较小,R-PC/ABS/0.8TSQ的LOI为29.8%,阻燃达到3.0 mm V-0和2.0 mm V-1级;HDP可以有效地阻燃R-PC/ABS,但是,对力学性能、尺寸稳定性和HDT的负面影响较大,R-PC/ABS/12HDP的LOI为36.1%,阻燃可达到UL 941.0 mm V-0级,与R-PC/ABS相比,HDT、拉伸强度、弯曲强度、弯曲模量和缺口冲击强度分别降低了20.2℃、26.6%、14.5%、16.9%和60.9%;R-PC/ABS/0.8TSQ/6HDP的LOI为35.7%,阻燃级别达到UL 941.0 mm V-0级,与R-PC/ABS/12HDP相比,模后收缩率(PMS)降低了19.7%,HDT、拉伸强度、弯曲强度、弯曲模量和缺口冲击强度分别提高了13℃、21.0%、11.3%、14.3%和85.9%。展开更多
以钛酸四丁酯水解反应原位生成的TiO_(2)包覆微胶囊红磷(microcapsulated red phosphorus,TDP)为主体阻燃剂,开展PC/ABS合金的协效阻燃研究。以PC/ABS阻燃复合材料的LOI值、UL-94等级为主要考察指标,筛选并确定较适宜的TDP基三元协效复...以钛酸四丁酯水解反应原位生成的TiO_(2)包覆微胶囊红磷(microcapsulated red phosphorus,TDP)为主体阻燃剂,开展PC/ABS合金的协效阻燃研究。以PC/ABS阻燃复合材料的LOI值、UL-94等级为主要考察指标,筛选并确定较适宜的TDP基三元协效复合阻燃剂及其质量配比为TDP∶ZnO∶DOPO=16∶4∶5。燃烧特性、阻燃性能和力学性能等测试、分析结果显示,随TDP/ZnO/DOPO添加量的增大,PC/ABS阻燃复合材料的着火时间(TTI)、热释放速率峰值(PHRR)、总热释放量(THR)、平均有效燃烧热(AEHC)、CO_(2)释放量峰值等燃烧特性数值均下降,阻燃性能(LOI值、UL-94等级)提升,但弯曲强度、拉伸强度均稍有下降。综合考虑,认为较适宜三元协效复合阻燃剂添加量为5%(质量分数),此时,PC/ABS阻燃复合材料的LOI值为28.6%、UL-94等级为V-0级;相较于PC/ABS合金,PC/ABS阻燃复合材料的TTI、PHRR、THR、AEHC、CO_(2)释放量峰值分别下降了27.27%、21.62%、22.10%、5.95%、25.97%,弯曲强度、拉伸强度分别下降了19.65%、13.26%。对三元协效复合阻燃剂的阻燃作用机制进行了初步探讨,认为TDP/ZnO/DOPO对PC/ABS合金的阻燃是DOPO的气相阻燃、TDP和ZnO的凝聚相阻燃两种作用机制协同作用的结果。展开更多
文摘In view of the phenomenon that the adhesion strength between the surface of polyacrylonitrile-butadiene-styrene-polycarbonate(ABS-PC)copolymer and the electroless copper plating layer is relatively low.To solve the problems of poor surface wettability and low surface roughness of the ABS-PC substrate,the N,N-dimethylformamide(DMF)-ethanol(C_(2)H_(5)OH)-water(H_(2)O)system was employed as the swelling system for the ABS-PC substrate.The effects of the DMF volume fraction in the swelling system and the swelling time on the swelling effect of ABS-PC at 35℃were investigated.KMnO_(4)-H_(2)SO_(4)-H_(2)O system was used as the etching system for ABS-PC substrate under the conditions of the volume ratio of water to sulfuric acid of 1﹕2,with KMnO_(4)content of 30 g/L,etching temperature of 60℃,and etching time of 25 min.The results indicate that dense pores with uniform sized are formed on the surface of the ABS-PC substrate surface after swelling and etching treatments,accompanied by an increase in surface roughness when the swelling temperature is 35℃,the DMF volume fraction in the swelling system is 80%,and the swelling time is 5 min.Furthermore,the content of C element on the surface of the ABS-PC substrate decreased,while that of O element increased,and the surface hydrophilicity is enhanced,which is attributed to two hydrophilic groups,-C=O and-COOH,being generated on the ABS-PC substrate surface,significantly improving the wettability of the ABS-PC substrate surface.Under the combination effects of high surface roughness and strong surface hydrophilicity,the adhesion strength between the ABS-PC substrate surface and the electroless copper plating layer reached to 0.81 kN/m,meeting the adhesion strength requirement of 0.70 kN/m in the industrial production.
文摘以废打印机壳PC/ABS再生粒子(R-PC/ABS)为基体材料,对苯二酚双(二苯基磷酸脂)(HDP)和梯形倍半硅氧烷(TSQ)为阻燃剂,采用熔融共混制备了无卤阻燃PC/ABS,对其阻燃性能、力学性能、尺寸稳定性和负荷热变形温度(HDT)进行分析,结果发现,TSQ可以阻燃R-PC/ABS,并且,对力学性能、尺寸稳定性和HDT影响较小,R-PC/ABS/0.8TSQ的LOI为29.8%,阻燃达到3.0 mm V-0和2.0 mm V-1级;HDP可以有效地阻燃R-PC/ABS,但是,对力学性能、尺寸稳定性和HDT的负面影响较大,R-PC/ABS/12HDP的LOI为36.1%,阻燃可达到UL 941.0 mm V-0级,与R-PC/ABS相比,HDT、拉伸强度、弯曲强度、弯曲模量和缺口冲击强度分别降低了20.2℃、26.6%、14.5%、16.9%和60.9%;R-PC/ABS/0.8TSQ/6HDP的LOI为35.7%,阻燃级别达到UL 941.0 mm V-0级,与R-PC/ABS/12HDP相比,模后收缩率(PMS)降低了19.7%,HDT、拉伸强度、弯曲强度、弯曲模量和缺口冲击强度分别提高了13℃、21.0%、11.3%、14.3%和85.9%。
文摘以钛酸四丁酯水解反应原位生成的TiO_(2)包覆微胶囊红磷(microcapsulated red phosphorus,TDP)为主体阻燃剂,开展PC/ABS合金的协效阻燃研究。以PC/ABS阻燃复合材料的LOI值、UL-94等级为主要考察指标,筛选并确定较适宜的TDP基三元协效复合阻燃剂及其质量配比为TDP∶ZnO∶DOPO=16∶4∶5。燃烧特性、阻燃性能和力学性能等测试、分析结果显示,随TDP/ZnO/DOPO添加量的增大,PC/ABS阻燃复合材料的着火时间(TTI)、热释放速率峰值(PHRR)、总热释放量(THR)、平均有效燃烧热(AEHC)、CO_(2)释放量峰值等燃烧特性数值均下降,阻燃性能(LOI值、UL-94等级)提升,但弯曲强度、拉伸强度均稍有下降。综合考虑,认为较适宜三元协效复合阻燃剂添加量为5%(质量分数),此时,PC/ABS阻燃复合材料的LOI值为28.6%、UL-94等级为V-0级;相较于PC/ABS合金,PC/ABS阻燃复合材料的TTI、PHRR、THR、AEHC、CO_(2)释放量峰值分别下降了27.27%、21.62%、22.10%、5.95%、25.97%,弯曲强度、拉伸强度分别下降了19.65%、13.26%。对三元协效复合阻燃剂的阻燃作用机制进行了初步探讨,认为TDP/ZnO/DOPO对PC/ABS合金的阻燃是DOPO的气相阻燃、TDP和ZnO的凝聚相阻燃两种作用机制协同作用的结果。
