A series of blends of Acrylonitrile-Butadiene-Styrene (ABS) and Polycarbonate (PC) were prepared and some of their thermal and mechanical properties were determined. The Young’s modulus changed gradually and monotoni...A series of blends of Acrylonitrile-Butadiene-Styrene (ABS) and Polycarbonate (PC) were prepared and some of their thermal and mechanical properties were determined. The Young’s modulus changed gradually and monotonically with the polycarbonate content. This effect was tentatively explained as the antiplasticization of the PC which is ascribed to the chain mobility, which permits the PC chains to pack more tightly, to the secondary cross-linking between the PC chains, or to the secondary attachment of bulky side-chains to the PC, thus producing steric hindrance to the rotation of the PC main chains. The experimental values found for the impact strength were intermediate between those of the neat polymers, depending upon the dispersed rubber particles of butadiene in the matrix of SAN (Styrene-Acrylonitrile), and the dispersed PC particles which generally make the ABS more brittle. A maximum value of about 88 KJ/m2 for the impact strength was observed for the blend with 90% PC. This may be attributed to the strong polymer-polymer interactions for this particular composition. The variations in the heat deflection temperature HDT and the Vicat softening point with the blend composition were very similar, and allowed us to assume that the phase inversion between the matrices of the two polymers takes place at 50% PC. The morphology of the blends revealed by SEM observation, show a co-continuous structure.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
The optimization of injection molding process for polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends is studied using Taguchi method and principalcomponent analysis (PCA). Four controllable process factors ...The optimization of injection molding process for polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends is studied using Taguchi method and principalcomponent analysis (PCA). Four controllable process factors are studied at three levels each in themanufacturing process. The L_9 orthogonal array is conducted to determine the optimum processfactor/level combination for single quality of mechanical properties. In addition, the principalcomponent analysis is employed to trans-form the correlated mechanical properties to a set ofuncorrelated components and to evaluate a comprehensive index for multi-response cases. Then theoptimum process factor/level combination for multiple qualities can be determined. Finally, theanalysis of variance is used to find out the most influential injection molding parameter for singleand multiple qualities problems.展开更多
This paper experimentally studies the tensile deformation behavior of poly- carbonate （PC）, acrylonitrile-butadiene-styrene （ABS）, and PC/ABS blends （with the blending ratios of PC to ABS being 80：20, 60：40, 50...This paper experimentally studies the tensile deformation behavior of poly- carbonate （PC）, acrylonitrile-butadiene-styrene （ABS）, and PC/ABS blends （with the blending ratios of PC to ABS being 80：20, 60：40, 50：50, and 40：60） from low to high strain rates. Using the universal MTS-810 machine and the split Hopkinson tension bar （SHTB） testing system, the quasi-static and impact tension tests are carried out at the room temperature. The curves of the true stress and the true strain are obtained. The deformation behaviors of PC, ABS, and PC/ABS blends are characterized in detail. The linear relationship between the strain rate and the yielding stress is given.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
The preparation process-dependent phase morphology of blends composed of nylon 6 and acrylonitrile-butadiene- styrene(ABS)over a composition range of 30-70 wt% using a styrene-maleic anhydride(SMA)copolymer as the com...The preparation process-dependent phase morphology of blends composed of nylon 6 and acrylonitrile-butadiene- styrene(ABS)over a composition range of 30-70 wt% using a styrene-maleic anhydride(SMA)copolymer as the compatibilizing agent with a constant content(5phr)was investigated.The results of the scanning electron microscope (SEM)observation revealed that compared with the binary blends of nylon 6 and ABS,the existence of SMA caused a composition shift of phase inversion to a higher weight fraction of ny...展开更多
Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. T...Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. The viscosity-composition plots were represented by sub-cluster equation, the various differences between two systems are interpreted with the equation parameters展开更多
文摘A series of blends of Acrylonitrile-Butadiene-Styrene (ABS) and Polycarbonate (PC) were prepared and some of their thermal and mechanical properties were determined. The Young’s modulus changed gradually and monotonically with the polycarbonate content. This effect was tentatively explained as the antiplasticization of the PC which is ascribed to the chain mobility, which permits the PC chains to pack more tightly, to the secondary cross-linking between the PC chains, or to the secondary attachment of bulky side-chains to the PC, thus producing steric hindrance to the rotation of the PC main chains. The experimental values found for the impact strength were intermediate between those of the neat polymers, depending upon the dispersed rubber particles of butadiene in the matrix of SAN (Styrene-Acrylonitrile), and the dispersed PC particles which generally make the ABS more brittle. A maximum value of about 88 KJ/m2 for the impact strength was observed for the blend with 90% PC. This may be attributed to the strong polymer-polymer interactions for this particular composition. The variations in the heat deflection temperature HDT and the Vicat softening point with the blend composition were very similar, and allowed us to assume that the phase inversion between the matrices of the two polymers takes place at 50% PC. The morphology of the blends revealed by SEM observation, show a co-continuous structure.
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The optimization of injection molding process for polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends is studied using Taguchi method and principalcomponent analysis (PCA). Four controllable process factors are studied at three levels each in themanufacturing process. The L_9 orthogonal array is conducted to determine the optimum processfactor/level combination for single quality of mechanical properties. In addition, the principalcomponent analysis is employed to trans-form the correlated mechanical properties to a set ofuncorrelated components and to evaluate a comprehensive index for multi-response cases. Then theoptimum process factor/level combination for multiple qualities can be determined. Finally, theanalysis of variance is used to find out the most influential injection molding parameter for singleand multiple qualities problems.
基金supported by the National Natural Science Foundation of China (No. 11142004)the Shang-hai Leading Academic Discipline Project (No. S30106)the Innovative Foundation of Shanghai University
文摘This paper experimentally studies the tensile deformation behavior of poly- carbonate （PC）, acrylonitrile-butadiene-styrene （ABS）, and PC/ABS blends （with the blending ratios of PC to ABS being 80：20, 60：40, 50：50, and 40：60） from low to high strain rates. Using the universal MTS-810 machine and the split Hopkinson tension bar （SHTB） testing system, the quasi-static and impact tension tests are carried out at the room temperature. The curves of the true stress and the true strain are obtained. The deformation behaviors of PC, ABS, and PC/ABS blends are characterized in detail. The linear relationship between the strain rate and the yielding stress is given.
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。
基金This work was supported by the National Science Funds for GuiZhou Province Science Projects(No.GY-2005-3036)the Special Funds for Major State Basic Research Projects(No.2005CB623802).
文摘The preparation process-dependent phase morphology of blends composed of nylon 6 and acrylonitrile-butadiene- styrene(ABS)over a composition range of 30-70 wt% using a styrene-maleic anhydride(SMA)copolymer as the compatibilizing agent with a constant content(5phr)was investigated.The results of the scanning electron microscope (SEM)observation revealed that compared with the binary blends of nylon 6 and ABS,the existence of SMA caused a composition shift of phase inversion to a higher weight fraction of ny...
文摘Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. The viscosity-composition plots were represented by sub-cluster equation, the various differences between two systems are interpreted with the equation parameters
