PC／ABS共混合金的配比与性能

制备了不同配比的ＰＣ／ＡＢＳ共混物样品,测定了不同配比ＰＣ／ＡＢＳ共混物样品的熔体指数、断裂拉伸强度、断裂伸长率、冲击强度、弯曲强度、硬度、维卡软化点、吸水率、动态力学性能。结果表明：（１）ＡＢＳ的加入能改善熔体流动性,降低成型加工温度;（２）弯曲强度随ＡＢＳ含量的递增而下降,断裂伸长率在ＡＢＳ占５０％（质量分数）为转折点,硬度变化不明显;（３）热性能有所下降,但和其它综合性能的提高相比是较小的;综合研究结果认为５０％ＡＢＳ,５０％ＰＣ共混物的总体性能较好,此时抗冲性能最好。     

永久抗静电PC/ASA材料的制备

将永久型抗静电母粒与聚碳酸酯(PC)、丙烯腈-苯乙烯-丙烯酸共聚物(ASA)通过双螺杆熔融共混挤出,制备了永久型抗静电PC/ASA材料,进一步考察了永久抗静电剂的用量对永久抗静电型PC/ASA合金的力学性能和抗静电性能的影响,以及永久抗静电剂对PC/ASA合金耐久性和耐水洗性的影响.研究表明:随着永久抗静电剂用量的增加,PC/ASA合金的表面电阻率明显下降,添加11%～19%的抗静电剂可使PC/ASA材料的表面电阻率达到108～1010Ω,而且24个月之后仍保持在同一数量级,具有永久抗静电性能;随着永久抗静电剂用量的增加,PC/ASA合金材料的力学性能稍有下降;添加了永久抗静电剂的PC/ASA合金在水洗100次后,其表面电阻率变化很小.     

HDP—PVC／ABS合金材料的研究

研究了高聚合度聚氯乙烯（ＨＤＰ－ＰＶＣ）／ＡＢＳ二元体系力学性能以及添加第三组分对合金材料力学性能的影响。结果表明：ＨＤＰ－ＰＶＣ／ＡＢＳ配比为１００／２５时,共混物的综合性能好,体系能形成较完善的海岛结构;ＨＤＰ－ＰＶＣ／ＡＢＳ／ＭＢＳ体系中,ＭＢＳ能改善多元体系的界面性能,提高合金材料的综合性能;ＨＤＰ－ＰＶＣ／ＡＢＳ／ＣＰＥ体系中,ＣＰＥ能使形成网状结构和海岛结构共存的合金体系,提高合金材料     

PC／ABS塑料合金的开发与应用

本文研究了ＡＢＳ和ＰＶＣ对ＰＣ／ＡＢＳ共混体系力学性能的影响,结果表明,ＡＢＳ和ＰＶＣ／ＡＢＳ塑料合金具有明显的增韧和提高加工性能的作用。     

PVC／ABS合金体系微观结构与宏观性能的研究

文中着重从微观角度以透射电子显微镜和动态粘弹谱仪为手段研究ＰＶＣ／ＡＢＳ合金的相容性和相结构，从宏观角度研究ＰＶＣ／ＡＢＳ合金的力学性能，研究结果表明：ＰＶＣ／ＡＢＳ共混材料具有亚微观多相宏观均相的结构，共混体系在ＡＢＳ低组发和高组分时均有较好的相容性。本项研究所制备的ＰＶＣ／ＡＢＳ合金材料，在ＡＢＳ含量１０％左右时，不仅能有效地提高材料的抗冲击性能，而且具有较好的抗拉伸和抗弯曲性能。     

PC/ABS合金及其阻燃性能

为了提高机械性能和阻燃性能,将ＭＢＳ作为第三组分加入到ＰＣ／ＡＢＳ合金及其阻燃合金中。对不同配比合金的性能进行测试。发现ＭＢＳ加入到ＰＣ／ＡＢＳ合金中,可以提高ＰＣ／ＡＢＳ的冲击性能;ＭＢＳ加入到ＰＣ／ＡＢＳ阻燃合金中,既可以提高合金的冲击性能,又可以提高合金的阻燃性能,所得合金的综合性能优异。     

非离子型复合抗静电剂在聚丙烯薄膜中的应用

采用非离子型抗复合抗静电剂通过共混复合的方法制备出具有抗静电性能的聚丙烯,考察了抗静电剂的添加量、放置时间、环境湿度对抗静电聚丙烯的表面电阻率的影响。     

尼龙6／ABS合金的结构与性能

研究了以自制的马来酸酐直接枝改性ＡＢＳ代替了或作为增容剂使用形成的尼龙６／ＡＢＳ合金的结构与性能，研究结果表明，接枝改性可以提高ＡＢＳ在基体树脂中的分散性，改善共混组分间的相容性，引起体系结晶熔融行为的改变；随ＡＢＳ接板率的上升，尼龙６／ＡＢＳ合金的冲击强度提高，当接枝ＡＢＳ作为增容剂使用时，随增容剂用量增加，材料的冲击强度呈提高趋势；保持增容剂与ＡＢＳ的比例，增加尼龙６含量时，尼龙６／ＡＢＳ合金     

聚丙烯抗静电纤维的研究Ⅰ.不同共混体系抗静电性能

分别对 3种不同的抗静电体系 PP/PET-PEG,PP/PEG/Cu I和 PP/PET-PEG/PEG/Cu I的抗静电性能进行了研究。结果表明 :三类共混体系均有一定的抗静电性能 ,其中以 PP/PET-PEG/PEG/Cu I共混体系的抗静电性能最好。当抗静电剂添加为总量的 6%时 ,其体积电阻率可达 6.8× 10 9Ω· cm,抗静电性能对环境相对湿度的敏感性低于 PP/PET-PEG体系 ,且纤维的力学性能较 PP/PEG/Cu I体系有所改进。共混体系为海相 -微纤复合结构。     

不同抗静电剂对聚丙烯抗静电性能和力学性能的影响

通过熔融共混法制备不同配比的多元醇脂肪类抗静电剂、磺酸类抗静电剂改性聚丙烯（PP）抗静电材料;分别考察了两种抗静电材料的体积电阻率、表面电阻率、拉伸强度、冲击强度和表面硬度。结果表明：两种抗静电剂的加入都能够降低PP的表面电阻率,起到抗静电效果,而多元醇脂肪类抗静电剂的效果要比磺酸类抗静电剂突出;两种抗静电剂对PP体积电阻率影响都不大。此外,两种抗静电剂的加入会降低PP的拉伸强度和表面硬度,对冲击强度影响不大。在PP中添加6份多元醇脂肪类抗静电剂,抗静电效果最佳,其表面电阻率为4.7×1011Ω,拉伸强度为27.28MPa,冲击强度为4.9kJ/m2,邵氏硬度为64.8。     

永久抗静电PA6/ABS材料的制备

采用双螺杆挤出的方法将永久型抗静电母粒与尼龙(PA)6、(丙烯腈/丁二烯/苯乙烯)共聚物(ABS)熔融共混,制得永久型抗静电PA6/ABS材料.研究表明,适量马来酸酐接枝ABS的加入,可以显著提高ABS和PA6的相容性;随着永久型抗静电母粒用量的增加,PA6/ABS合金材料的表面电阻率明显下降,20%～30%的抗静电母粒可使PA6/ABS材料的表面电阻率达到1×107～1×108Ω,一年之后仍保持为1×108Ω,具有永久抗静电性能;抗静电PA6/ABS材料具有优异的可染色性.     

PC及PC/ABS合金的增韧研究

研究了增韧剂SWR-7A对PC及PC／ABS增韧效果。比较了增韧剂SWR-7A与美国增韧剂GE-338及国内外其它增韧剂的增韧效果。研究表明，加入SWR-7A在提高PC及PC／ABS共混体系的冲击强度的同时，拉伸强度、弯曲强度及弯曲模量降低较少，达到了优化材料性能的目的，SWR-7A是一种理想的增韧剂。     

聚环氧酯的合成及其对PC/ABS相容性的影响

以双酚A环氧树脂和己二酸合成了聚己二酸环氧酯,将环氧酯作为相容剂加入到PC/ABS中通过双螺杆挤出机并注射成型制备了合金,与马来酸酐接枝聚苯乙烯（SMA）相容剂增容的合金的力学性能及分散形态进行了对比。结果表明,聚环氧酯对PC相具有良好的相容性,而SMA对ABS相的相容性较好,二者复合使用可以显著改善合金的相容性;聚环氧酯能明显提高PC/ABS合金的拉伸强度和缺口冲击强度,但过量加入会降低合金的冲击强度;SEM结果表明少量的聚环氧酯即可以使ABS分散相分布均匀,与SMA并用可以使分散相尺寸减小,提高相容性。     

Thermal aging of bisphenol-A polycarbonate/acrylonitrile–butadiene–styrene blends

Thermal aging of immiscible bisphenol-A polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) blends containing 25, 60, and 75% PC and the PC and ABS blend components have been studied. Changes in Izod impact properties and dynamic mechanical spectra are reported following aging at 90, 110, and 130°C for times up to 1500 h. PC/ABS blends containing 60 and 75% PC were found to retain high impact performance following aging at elevated temperatures, compared to the PC blend component. Dynamic mechanical spectroscopy is an effective probe for investigating the structure–property changes occurring and the mechanisms of aging. For PC and ABS, the changes were mainly due to physical aging of the amorphous polymers when aged below the glass-transition temperature. For the PC/ABS blends, oxidative degradation additionally contributes to loss of toughness. Although structure–property changes are related to the behavior of the blend components, additional factors of potential importance for multiphase polymer–polymer systems have been identified, including a redistribution of stabilizers during the blend manufacture. © 1995 John Wiley & Sons, Inc.     

PC/ABS共混改性的研究

运用二次通用旋转回归设计的方法，建立了共混合金组成与性能之间相互关联的数学模型，研究了PC／ABS共混体系在0水平时各组分及组分间交互作用对共混材料各项性能的影响。结果表明，共混体系中，PC含量是决定共混物力学性能的主要因素，PC、ABS的种类及其交互作用对体系的耐热性和强度等性能影响显著。     

Influence of rubber content in ABS in wide range on the mechanical properties and morphology of PC/ABS blends with different composition

A series of acrylonitrile–butadiene–styrene (ABS) with different rubber content were prepared by diluting ABS grafting copolymer containing 60% rubber with a styrene–acrylonitrile copolymer. ABS prepared were blended with bisphenol‐A‐polycarbonate (PC) at the ratio of 70/30, 50/50, and 30/70 to prepare PC/ABS blends. Influence of rubber content in ABS on the properties of ABS and PC/ABS blends were investigated. PC/ABS blends with different compositions got good toughness when the rubber in ABS increased to the level that ABS itself got good toughness. The tensile properties and processability of PC/ABS blends decreased with the increase of the total rubber content introduced into the blends. ABS with the rubber content of 30 wt% is most suitable to be used to prepare PC/ABS blends. The rubber content in ABS affected the viscosity of ABS, and subsequently the viscosity ratio of PC to ABS. As a result, the morphology of PC/ABS blends varied. The increase of rubber content in ABS results in finer structure of PC/ABS blends. POLYM. ENG. SCI. 46:1476–1484, 2006. © 2006 Society of Plastics Engineers.     

PC/ABS回收料的改性研究

采用双螺杆熔融挤出的方法将不同含量相容剂(马来酸酐接枝苯乙烯-丁二烯共聚物,BS-g-MAH)、ABS高胶粉(g-ABS)分别与PC/ABS回收料融熔共混,并对共混材料进行了力学性能表征,结果表明:添加2%相容剂能有效改善PC与ABS的相容性,提高ABS回收料的拉伸强度,但对材料的冲击强度作用不大;随着ABS高胶粉含量的增加,回收料的悬臂梁缺口冲击强度逐渐上升,拉伸强度及断裂伸长率则先上升后下降,当添加15%ABS高胶粉时,回收料的综合性能最佳。     

Effects of blend composition on the morphologies and physical properties of polycarbonate/acrylonitrile-butadiene-styrene blends

The morphologies and physical properties of twin-screw-extruded polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) blends with various blend ratios are studied. The needle-like co-continuous phase in PC-rich blends changes to the sea-island phase for blend ratios of more than 50 wt% ABS. While pure PC exhibits an almost-Newtonian flow behavior, PC/ABS blends exhibit the interesting rheological transition. The viscosities of the ABS-rich blends at low shear rates are almost equal to those of the pure ABS polymer. The yield stress for the PC/ABS blend ratio of 3:7 is the highest in composition. At the frequency of 10 rad/s, the PC-rich blends exhibit highly viscous properties, whereas the ABS-rich blends present highly elastic properties as the temperature increases. Moreover, the ABS polymer in the PC/ABS polymer blend induces significant change at the fracture surface of PC, transitioning from brittle to ductile nature.     

新一代高性能PC/ABS合金的研究

通过对聚碳酸酯(PC)/(丙烯腈/丁二烯/笨乙烯)共聚物(ABS)合金失效原因分析,对材料的各组分选材进行优化,研究了PC/ABS合金经多次循环回收、高温高湿加速老化、长期高温热老化后的性能变化情况.配方优化后的PC/ABS材料既可成型薄壁大型制件,又具有优良的耐久性,且可以回收利用.     

Recycling of ABS and ABS/PC blends

The aim of this work within the framework of mechanical recycling of polymers is upgrading recycled engineering plastics by means of a blending technique. Four different plastics from dismantled Volvo cars have been investigated. They are poly(acrylonitrile‐butadiene‐styrene) (ABS) and ABS‐polycarbonate (ABS/PC) as major components and poly(methyl methacrylate) (PMMA) and polyamide (PA) as minor components. Blending recycled ABS and PC/ABS (70/30) with a small amount of methyl methacrylate‐butadiene‐styrene core‐shell impact modifiers gives the mixture better impact properties than any of its individual components. Some 10% of PMMA from tail light housings can follow the PC/ABS blends made. The property profile will rather be improved. However, PA is an incompatible component that should be sorted out from the mixture. Antioxidants and metal deactivators do not help the recyclates show better mechanical properties. Two toughness measurements, Charpy impact strength and J‐integral method, show complimentary results for such blends. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 510–515, 1999