以复配SAN树脂制备高流动型ABS树脂的研究

以通用型苯乙烯-丙烯腈共聚物(SAN)与高流动型SAN掺混得到复配SAN树脂,通过与丙烯腈-丁二烯-苯乙烯共聚物(ABS)接枝粉料及各种助剂掺混造粒制备得到高流动型ABS树脂,分别考察了高流动型SAN含量、橡胶含量、润滑剂用量及挤出机各段温度等对所制备ABS树脂性能的影响,获得了制备高流动型ABS树脂的最佳条件.     

ABS色母粒用分散剂的研究

初步探索了国内外生产的ABS色母粒用分散剂的机理和应用性能。结果表明,分散剂的种类对色母粒的流变性能和颜料的分散效果有一定影响,这与分散剂的化学结构有关。分散剂的用量也影响到色母粒的流变性能和颜料的分散效果,在一定范围内,分散剂用量增加,色母粒的应用性能得以改善。     

不同厂家加工助剂对PVC材料性能的影响

考察了不同厂家的CPE、活性碳酸钙、稳定剂和润滑剂对PVC材料性能的影响。结果表明:不同厂家助剂的品质有明显的区别,建议PVC加工企业对加工助剂进行严格筛选。     

润滑剂类型对ABS树脂润滑性能的影响

本文采用HAAKE—9000流变仪,在一定转速和温度条件下,测定了不同润滑剂对ABS体系的塑性形变曲线,并对各种曲线进行了分析,为今后在制作轿车门内基板的ABS体系中确定润滑剂的种类提供了有益的参考。     

配方对吉化ABS性能的影响

以吉化产ＡＢＳ粉料和ＳＡＮ树脂为基础原料，通过调整各组分及其用量，考察内润滑剂、外润滑剂、粉料的含量及不同分子量ＳＡＮ对吉化ＡＢＳ性能的影响。结果表明：当ＡＢＳ粉料粉料／ＳＡＮ质量比为３６／６４、内润滑剂ＥＢＡ含量为１％，外润滑剂硬脂酸镁含量为０．０９％时，ＡＢＳ有较好的综合性能和加工性。     

有机硅酮树脂对阻燃ABS性能的影响

研究了有机硅酮树脂SFR100对四溴双酚A双（2，3－二溴丙基）醚（TBAB）和Sb2O3阻燃ABS性能的影响。结果表明，SFR 100有效提高或改善TBAB／Sb2O3阻燃ABS的阻燃性能，冲击强度和加工性能。在TBAB／Sb2O3质量比为3：1，TBAB用量为14％的阻燃ABS中，SFR100的适宜用量为4％，此时，阻燃ABS的氧指数，冲击强度和熔融指数分别从29,2.1.2KJ/m^2，和3.28g/10min提高到31．8，15.1KJ/m^2和3.72g/10min，弯曲强度仅从65.0MPa下降到64.0MPa，但拉伸强度从43．8MPa下降到33.3MPa。     

有机硅树脂与溴系阻燃剂协同阻燃ABS的研究

研究了有机硅树脂SFR100对四溴双酚A双(2，3-二溴丙基)醚(TBAB)阻燃ABS的阻燃性能、冲击强度及电性能的影响。结果表明，SFR100与TBAB对ABS有协同阻燃作用，可有效提高阻燃ABS的阻燃性能和冲击强度，并使其电性能得到一定的改善。在TBAB用量为14％(质量分数，下同)的阻燃ABS中，SFR100的适宜用量为4％，此时氧指数和冲击强度分别从29．2％和11．2kJ／m^2提高到31．8％和15．1kJ／m^2，且电气强度提高，介电常数和介电损耗因数下降。TGA分析表明，SFR100提高了ABS的热分解温度。通过SEM发现，SFR100主要以微小的液滴形式均匀分散在ABS基体中。     

偶联剂对玻纤增强ABS复合材料性能的影响

采用偶联剂处理玻璃纤维，制备了ABS／玻璃纤维复合材料，研究了偶联剂的种类、用量、纤维处理方法，以及马来酸酐接枝ABS（ABS－g－MAH）、抗冲改性剂、抗氧剂等助剂对ABS复合材料性能的影响。结果表明，1．5％的KH－550偶联剂与10％的ABS－g－MAH并用可大幅度提高ABS复合材料的力学性能。     

PVC/ABS共混合金的热性能研究

研究了ABS、增塑剂（DOP、DAP、M80）、加工助剂863用量、及第三元刚生粒子SAN用量对热性能的影响。结果表明：PVC／ABS共混合金的维卡耐热性主要依赖于ABS的用量，DOP、DAP对共混合金的维卡耐热有较大的影响，而对静态热稳定性影响不大。     

橡胶中树脂鉴别方法的研究

前言根据树脂在像胶中的不同作用,可将其分为三种类型:作软化剂用的古马隆和松香改性树脂;作硫化剂用的环氧树脂和酚醛树脂;为改性而与豫胶并用的树脂,一般称为塑料,主要有PVC、三元尼龙(548)、ABS、聚碳酸酯等。前两类树脂用量较小,第三类树脂用量较大。由于其它助剂的干扰,对这些在橡胶中的树脂进行鉴别较困难,因此必     

Increasing recyclability of PC,ABS and PMMA: Morphology and fracture behavior of binary and ternary blends

Binary and ternary blends of PC, ABS, and PMMA were studied. The blends were produced from original and recycled materials by melt mixing in a wide range of compositions. Instrumented Charpy impact testing, tensile testing, rheology investigations, and electron microscopy were carried out to determine the relationship between the deformation and fracture behavior, blend composition, morphology, and processing parameters. Resistance against unstable crack propagation was evaluated using the concepts of J‐integral and crack‐tip‐opening displacement (CTOD). The transition from ductile elastic‐plastic to brittle‐linear elastic fracture behavior was observed in the case of PC/ABS/PMMA blend at 10% of PMMA. Reprocessing had only a slight influence on the deformation and fracture behavior of the recycled blends. The blends produced from recycled materials proved to be competitive with the original pure materials. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 2008     

ABS／SMA及ABS／SMA／PMMA的性能研究

研究了ABS／SMA和ABS／SMA／PMMA共混体系,确定了配比与合金的拉伸强度、冲击强度、断裂伸长率、模量、热变形温度、熔体流动速率等关系。结果表明：①ABS中引入SMA可以显著提高耐热性能,但同时合金的缺口冲击强度严重降低;②ABS中引入SMA可使合金的流动性能提高;③ABS／SMA体系中引入第三组分PMMA可以大幅度提高共混物的缺口冲击强度,同时使合金的耐热性能有所提高。     

Micromechanical processes and failure phenomena in reactively compatibilized blends of polyamide 6 and styrenic polymers. I. Polyamide 6/acrylonitrile– butadiene–styrene copolymer blends

In this work, in situ investigations of the micromechanical properties of reactively compatibilized blends of polyamide 6 (PA6) and an acrylonitrile–butadiene–styrene copolymer (ABS) were performed with transmission electron microscopy. Three PA6/ABS blends were prepared with a disperse morphology (inclusions of PA6 or ABS) and with a cocontinuous structure. The objective of this work was to study the deformation of the inclusions and the interface between the PA6 phase and the ABS phase. Our transmission electron microscopy investigations revealed that the morphology of the blends was strongly influenced by the asymmetric nature of the interface between PA6 and ABS. In the blends with a PA6 matrix, the interface between PA6 and the ABS inclusions was deformed in tensile deformation under uniaxial loading. A strong influence of the PA6 water content on the (micro)mechanical behavior was observed. Although the “dry” blends behaved in a brittle fashion, the “wet” blends behaved in a ductile fashion with the formation of deformation bands in the matrix (PA6 or ABS), which were initiated by stress concentration at the particles (ABS or PA6, respectively). © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

ABS/SAN/中粘度PMMA三元共混物的性能研究

制备不同配比的丙烯腈－丁二烯－苯乙烯（ABS）／苯乙烯－丙烯腈（SAN）／中粘度聚甲基丙烯酸甲酯（PMMA）合金，分别测试其缺口冲击强度、拉伸强度、热变形温度、熔体流动指数等，结果表明：ABS／SAN可以引发中粘度PMMA产生大量的银纹，从而大幅度提高共混物的冲击强度；引入中粘度PMMA可以提高ABS／SAN的耐热性能；添加中粘度PMMA，合金的流动性能呈现下降的趋势。     

Mechanical properties and deformation behaviors of acrylonitrile‐butadiene‐styrene under Izod impact test and uniaxial tension at various strain rates

Two polybutadiene‐graft‐acrylonitrile‐styrene copolymer (PBD‐g‐SAN) impact modifiers with different rubber particle size were synthesized by seeded emulsion polymerization. Acrylonitrile‐butadiene‐styrene (ABS) blends with a constant rubber concentration of 15 wt% were prepared by blending those impact modifiers and SAN resin. The major focus was the mechanical properties and deformation mechanisms of ABS blends under Izod impact test and uniaxial tension at various strain rates from 2.564 × 10^?4 S^?1 upto 1.282 × 10^?1 S^?1. By the combination of transmission electron microscope and scanning electron microscope, it was concluded that crazes and cavitation coexisted in ABS blends. The deformation mechanisms of ABS blend containing large rubber particles was rubber particles cavitation and shear yielding in the matrix including crazes, and they do not change with the strain rate. Different from ABS blend with large rubber particles, deformation mechanism of ABS with small rubber particles under tensile condition was only involved in shear yielding in the matrix and no crazes were formed. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers     

增容剂含量对PC/ABS共混物流变行为的影响

采用XLY-II型毛细管流变仪研究了聚碳酸酯/丙烯腈/丁二烯/苯乙烯(PC/ABS)共混物的流变特性。实验结果表明:PC/ABS共混物为假塑性流体,呈现出切力变稀的现象。增容剂的加入使得PC/ABS共混物的表观粘度增大,并且使得在同一剪切应力下的粘流活化能降低,故熔体的流动性受温度的影响较小。     

橡胶相结构特征对ABS树脂力学性能的影响

采用乳液聚合法合成了具有橡胶结构特征的丙烯腈丁二烯苯乙烯共聚物（ABS）,将其与苯乙烯丙烯腈共聚物（SAN）共混,制备了ABS/SAN共混物,并系统地研究了橡胶相结构特征的影响因素及其对共混物力学性能及其形变机理的影响。结果表明,随着聚丁二烯（PB）橡胶粒子粒径的增大,共混物的冲击强度提高,拉伸强度降低;随着橡胶粒子粒径的增大,共混物形变机理从单一的银纹向橡胶粒子空洞化诱发基体剪切屈服转变。     

Effect of Acrylonitrile-Butadiene-Styrene High-Rubber Powder and Strain Rate on the Morphology and Mechanical Properties of Acrylonitrile-Butadiene-Styrene/Poly (Methyl Methacrylate) Blends

Acrylonitrile-butadiene-styrene (ABS) high-rubber powder (HRP) toughened acrylonitrile-butadiene-styrene (ABS)/polymethyl methacrylate (PMMA) blends were prepared in a co-rotating twin screw extruder. The effect of ABS HRP on mechanical and morphology properties of ABS/PMMA blends was studied. It is shown that the toughness of ABS/PMMA blends was improved effectively with the incorporation of ABS HRP, while the elastic modulus and tensile strength decrease slightly. Tensile tests at different strain rates were carried out in order to investigate the influence of strain rate on mechanical properties of various blends. Finally, the strain rate sensitive behavior of different blends was explored by using the Eyring model.     

PA6/ABS共混物性能研究

将聚酰胺6（PA6）与市售的丙烯腈-丁二烯-苯乙烯（ABS）树脂共混,制备PA6/ABS共混物。研究了ABS树脂的用量对PA6/ABS共混物力学性能的影响;采用苯乙烯及丙烯腈共聚物（SAN）和ABS粉料熔融共混制得不同胶含量的ABS/SAN共混物。研究了不同胶含量的ABS/SAN共混物对PA6/ABS共混物力学性能的影响。在PA6/ABS/SAN共混物中引入苯乙烯-丙烯腈-马来酸酐共聚（SAM）树脂取代部分SAN树脂,研究了SAM树脂的加入及引入顺序的不同对共混物性能的影响。结果表明, ABS树脂的用量在50%～60%左右时共混物性能最佳。随ABS/SAN共混物胶含量提高,共混物的拉伸强度、弹性模量、弯曲强度和弯曲模量逐渐降低。随SAM树脂替代SAN量增加,共混物的拉伸和弯曲性能先降低后增加。但共混物熔体流动速率降低明显,而SAM树脂的引入顺序对共混物的力学性能影响不大。     

Study of compatibility,morphology structure and mechanical properties of CPVC/ABS blends

Compatibility, morphology structure, and mechanical properties of CPVC/ABS (Chlorinated polyvinyl chloride/acrylonitrile‐butadiene‐styrene) blends were studied. The core‐shell ratios of ABS were set at 40/60 and 70/30. The interface interactions between ABS and CPVC were changed by modifying the acrylonitrile (AN) content of the shell. The compatibility of CPVC with the shell of ABS was studied by the blends of CPVC/SAN with different AN content in SAN. Dynamic mechanical analysis results of CPVC/SAN were in accordance with the morphological properties of CPVC/ABS. The mechanical properties of CPVC/ABS blends in which the polybutadiene content was set to 15 wt % were studied. Results showed, with the change of AN content, the impact strength followed different way for CPVC/ABS blends with different core‐shell ratios of ABS because of the influence of the compatibility. When the core‐shell ratio was 40/60, the CPVC/ABS blends were much ductile in more widely AN range than the blends, whereas the core‐shell ratio of ABS was 70/30. The differences also showed in the SEM micrographs by the investigation of toughening mechanism. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010