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。     

PC/ABS共混体系的研究进展

综述了近年来国内外对PC/ABS共混体系结构与性能等方面的研究进展,其中包括相容性理论的研究、相容剂的选用及影响共混体系力学性能的因素:包括原料、组分的配比、成型条件等。并对共混体系的发展方向作了简要的分析,指出PC/ABS共混体系的开发研究在国内塑料合金的工业开发、应用中较为重要。     

相容剂对PC/ABS合金性能的影响

研究了自制的两种相容剂对PC／ABS合金的力学性能、应力开裂性能和熔体流动速率的影响,并用SEM研究了共混体系的相容性。结果表明,相容剂A[(苯乙烯／马来酸酐）共聚物]和相容剂B（ABS接枝共聚物）,均可提高共混体系中两组分的相容性。A、B的最佳用量分别为2％和5％。     

PC/ABS塑料合金的开发与应用

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对PC/ABS塑料合金具有明显的增韧和提高加工性能的作用.     

PC/ABS共混体系的研究进展

综述了PC/ABS共混体系相结构的分析结果、增容技术以及影响PC/ABS合金性能的主要因素。     

高流动性PC/ABS合金形成过程中的相形态演变与性能研究

采用低分子量聚碳酸酯,通过熔融共混的方法制备了高流动性PC/ABS合金,并研究了其体系形成过程中的相形态演变与性能变化的关系.研究结果表明尽管低分子量PC和ABS的二元共混体系中不发生明显的相分离倾向,但ABS的添加或其添加量的变化,均不足以使低分子量PC的性能得到改善和提高;以极性单体改性橡胶弹性体作为相容剂使用时,根据其与PC基体或与ABS之间相容性的差异,可形成橡胶弹性体和ABS各自独立地分散于PC基体中的相形态结构,或形成橡胶弹性体分别嵌入ABS与PC界面上的相形态结构;不同的相态结构,对改变体系共混组成条件所引起的性能变化,特别是冲击性能变化的倾向,有着极其显著的影响.     

软质ABS／PVC共混改性的研究分析

对PVC／ABS软质共混体系的力学性能进行TN试研究。结果发现：PVC／ABS共混体系的性能是组分的函数，ABS的加入改善了PVC／ABS共混体系的力学性能，在一定范围内（20—30份）随着ABS组分的增加共混体系的断裂伸长率、拉伸强度有一定程度的提高。     

ABS/PC聚合物合金的性能研究

研究了ABS和PC共混比对含有一定量相容剂的ABS／PC聚合物合金力学性能、耐热性、动态力学性能和断口形貌的影响。结果表明，PC的加入可以提高聚合物共混物的拉伸强度、弯曲强度、热变形温度和玻璃态转变温度；在PC为连续相的共混体系中，材料具有较好的综合性能。     

相容剂对PC／ABS合金性能的影响

制备了不同配比的PC／ABS合金样品，研究了三种相容剂对PC／ABS合金的力学性能及应力开裂性能的影响。结果表明，苯乙烯马来酸酐共聚物(相容剂A)、马来酸酐接枝ABS(相容剂B)、马来酸酐接枝线形低密度聚乙烯(相容剂C)均可以提高共混体系中两组分的相容性。相容剂A、B、C的最佳用量分别为3％、5％和4％。     

相容剂对PC/ABS共混物性能的影响

本文分别研究了马来酸酐接枝ABS(ABS-g-MAH)与甲基丙烯酸甲酯/丁二烯/苯乙烯共聚物(MBS)作为相容剂对PC/ABS共混体系相容性、力学性能、形态结构的影响.研究结果表明:当相容剂MBS加入PC/ABS共混体系中后,不仅能够显著改善PC/ABS共混物的相容性,明显降低分散相的粒径,而且能够使PC/ABS共混物在保持较高的拉伸强度的同时,大幅度地提高共混物的缺口冲击强度和断裂伸长率;而相容剂ABS-g-MAH的加入对共混体系的缺口冲击强度的改善不明显,但其断裂伸长率增幅较大.     

Mechanical properties of blends of polycarbonate with unmodified and maleic anhydride grafted ABS

Blends of polycarbonate/acrylonitrile–butadiene–styrene terpolymer (PC/ABS) and polycarbonate/maleic anhydride grafted ABS (PC/MABS) were prepared over the whole range of compositions using a single-screw extruder. Tensile, flexural, notched Izod impact properties, and the heat deflection temperature of these blends were determined. Mechanical properties of PC/MABS blends are nearly equal to or higher than, those predicted by the rule of mixtures, whilst those of PC/ABS blends show nearly equal, or negative deviation, from the rule of mixtures. The notched impact strength of PC/MABS blends shows a positive blending effect and proportionate increase from 25wt% PC to 75wt% PC. Scanning electron micrographs were taken of etched surfaces of selective blends. © 1998 SCI.     

PC／ABS共混物的结构和性能

综合分析了有关PC/ABS共混物的文献,重点介绍了PC/ABS共混物的结构,力学性能和热性能,以及改进性能的途径。同时介绍了共混的可能性、共混方法和成型加工要点等。     

Influence of ABS type on morphology and mechanical properties of PC/ABS blends

The morphology and the mechanical properties of polycarbonate (PC) blends with different acrylonitrile–butadiene–styrene (ABS) materials were investigated. PC/ABS blends based on a mass-made ABS with 16% rubber and large (0.5–1μm) rubber particles are compared to blends based on an emulsion-made ABS with 50% rubber and small, monodisperse (0.12 μm) rubber particles over the full range of blend compositions. The blends with the bulk ABS showed excellent impact strength for most compositions, and those containing 50 and 70% PC exhibited ductile to brittle transition temperatures below that of PC. The blends with the emulsion ABS showed excellent toughness in sharp notch Izod impact tests at room temperature and in standard notch Izod impact tests at low temperatures near the T_g of the rubber. By melt blending the various ABS materials with a styrene–acrylonitrile (SAN 25) copolymer, materials with lower rubber concentrations were obtained. These materials were used in blends with PC to make comparisons at constant rubber concentration of 5, 10, and 15%. The results of this investigation show that brittle ABS materials can produce tough PC–ABS blends. It is apparent that small rubber particles toughen PC–ABS blends at lower rubber concentrations and at lower temperatures than is possible with large rubber particles. However, additional work is needed to understand the nature of toughening in these PC–ABS blends with different rubber phase morphologies. It is of particular interest to understand the exceptional ductility of some of the blends at low temperatures. © 1994 John Wiley & Sons, Inc.     

ABS树脂的共混改性

简要介绍了通过共混改性ABS树脂的方法以及改性ABS树脂的性能与应用。ABS树脂可与PVC、热塑性聚酯、PC及亲水性聚合物进行共混 ,讨论了影响ABS树脂与PVC、PC共混的因素     

On a contribution to study some mechanical properties of WEEE recycled polymer blends

This research deals with the study of acrylonitrile-butadiene-styrene/polycarbonate (ABS/PC) totally derived from wastes of electrical and electronic equipment (WEEE). The aim of this study is to investigate the macroscopic use properties of 100% recycled polymers and compare them with the virgin materials. First, a preliminary work of sorting and characterization of the wastes was necessary to identify the predominant polymer components in the lots. Then, four compositions of blends (ABS/PC) were performed at laboratory using the twin-screw extruder and injection techniques. Next, a series of experimental tests were carried out to investigate the morphology of the blends, their mechanical and thermo-mechanical behavior. The experimental results highlighted the synergistic effect by blending ABS and PC wastes. In addition, the comparison with the virgin mixtures has shown a decrease in the mechanical properties of the waste blends, however, the mechanical behavior is still ductile and the blends stiffness was enhanced.     

PC/ABS手机充电器专用料的开发

以聚碳酸酯(PC)和ABS为基体树脂,添加增容剂、阻燃剂及其它助剂,经双螺杆挤出机熔融共混挤出造粒,制得PC／ABS手机充电器专用料：考察了原料配方和生产工艺对该专用料性能的影响。结果表明,生产的PC／ABS手机充电器专用料的各项性能达到了指标要求。     

高性能PC／ABS合金的制备及性能研究

为改善PC／ABS合金的耐低温、耐热及成型加工等性能,通过PC、AS及高胶粉的复合,考察了AS含量对合金各项性能的影响,并制备了具有耐低温、高热变形温度、高流动性、综合性能优异的PC／ABS合金。     

光盘回收PC改性ABS树脂研究

用光盘回收的聚碳酸酯（PC）树脂制备了丙烯腈-丁二烯-苯乙烯共聚物（ABS）/PC合金,探讨了回收PC含量、增容剂种类对合金力学性能的影响。结果表明,ABS/PC合金的拉伸强度随回收PC含量的增加而逐渐增大,冲击强度则呈先增长后下降的趋势,在回收PC含量为10 %（质量分数,下同）时达到最大值;增容剂甲基丙烯酸甲脂-丁二烯-苯乙烯共聚物（MBS）比甲基丙烯酸环氧丙酯接枝乙烯-辛烯共聚物（POE-g-GMA）更能改善ABS和PC的相容性,显著提高合金冲击强度,当回收PC含量为5 %时,用MBS增容的ABS/PC合金的冲击强度比纯ABS提高了42.8 %。     

ABS树脂中胶含量对PC/ABS合金性能及微观结构的影响

采用胶含量(质量分数,下同)为60％的丙烯腈-丁二烯-苯乙烯接枝共聚物(ABS)接枝粉料与苯乙烯-丙烯腈共聚物(SAN)以不同比例进行共混,制备了胶含量范围为10％～55％的ABS树脂.将胶含量不同的ABS树脂与聚碳酸酯(PC)以30/70、50/50、70/30的质量比利用熔融共混技术,制备了组成不同的PC/ABS共混物,考察了ABS树脂胶含量对不同组成的PC/ABS合金性能的影响.研究结果表明:随着ABS树脂中胶含量的增加,ABS树脂的冲击强度不断提高,屈服强度、模量及熔体流动速率逐渐降低.随着PC/ABS合金中ABS胶含量的增加,合金的冲击强度显著提高,ABS树脂中胶含量大于30％以后,合金的冲击强度变化不大,且3种组成的PC/ABS合金的冲击强度相差不大.合金的屈服强度、模量及熔体流动速率却随着ABS中胶含量的增加不断降低,其中组成为30/70的PC/ABS合金最低.利用扫描电镜观察了PC/ABS组成为70/30合金的微观结构,研究表明,ABS树脂形成连续相,PC为分散相,随ABS树脂胶含量的增加,合金的相形态变得更精细.