ABS／PC塑料合金的研究

ＡＢＳ／ＰＣ塑料合金具有优良的耐热和机械性能，特别具有良好的低温冲击性能。本课题研究了ＡＢＳ／ＰＣ的配比对合金的拉伸强度、冲击强度、耐性能的影响；并对添加相容剂的种类、含量的多少作了较详细的研究。所研制的系列产品与国外同类产品性能相当。     

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.     

PC/ABS 哑光合金的研究

选用牌号分别为KS-TD-00201、KS-TD-00202、BMAT和AX-8900的4种不同消光剂与聚碳酸酯（PC）、丙烯腈-丁二烯-苯乙烯共聚物（ABS）共混制备汽车内饰件用合金材料。对4种消光剂的消光效果及其对合金综合性能的影响进行了研究,同时,比较了各种消光剂的价格。结果表明,4种消光剂都有较好的消光效果。KS-TD-00201和KS-TD-00202对PC/ABS合金的力学性能基本无影响,BMAT会导致合金的冲击强度大幅下降,AX-8900则导致合金材料模量降低较多;同时KS-TD-00201和KS-TD-00202的价格较低,为性价比较好的消光剂。     

浅析PC/ABS材料合成改性

利用自制相容剂,采用两步试验合成工艺,经过试验确定了ABS含量以及增容剂对合金材料的影响,合成了高性能的PC/ABS合金材料。     

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.     

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     

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。     

ABS／PA6挑战PC／ABS

据“Plastics Technology”,2002-09-02报道:BASF美国公司采用新型相容剂制备的ABS/PA6共混物系列新产品Terblendn适于替代目前汽车工业、娱乐用品、电子部件和家用电器用的ABS、PC/ABS、PC/PBT和ABS/PBT共混物。据称Terblend N系列产品有非常平衡的韧性和刚性,良好的加工性,极好的表面外观和手感,注塑产品性能(包括光泽)重复性好。不填充牌号(密度1.07g/cm~3)适于做汽车内饰件(仪表台、手套箱、气囊罩)和在外部镜     

Effects of processing conditions on the phase morphology of PC/ABS polymer blends

The phase morphology of PC/ABS blends can be significantly affected by its processing conditions. Blends prepared in a mixing chamber at different conditions show a strong influence of mixing time and temperature on its morphology. The blend morphology changes from a well-dispersed PC phase surrounded by the ABS matrix phase to a cocontinuous morphology with increase in the mixing time. Higher blending temperatures promote changes in the PC/ABS morphology, probably due to thermal degradation. The rotor speed has not shown much influence on the blend phase morphology. The cocontinuous phase morphology of the PC/ABS blends obtained after mixing for 10 min was shown to be unstable as detected by the heat treatment. A melt annealing for a few minutes showed a significant change in the morphology. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:1605–1613, 1998     

ACR对PC和PC/ABS合金的增韧研究

以丙烯酸酯类树脂(ACR)FM50和D320作为增韧剂对聚碳酸酯(PC)和PC/丙烯晴-丁二烯-苯乙烯(ABS)(60/40,质量比)合金进行增韧。研究了ACR对PC和PC/ABS合金力学性能和熔体流动性的影响。结果表明,随ACR质量分数的增加,PC/ACR共混物的冲击强度增加,熔体质量流动速率先增大后减小,PC/ABS/ACR共混物的冲击强度先增加后降低,熔体质量流动速率减小,ACRFM50对PC和PC/ABS合金的增韧效果优于ACRD320,共混物的拉伸强度和弯曲强度随ACR用量的增加而下降。     

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。     

ABS／PC及ABS／HPVC合金研究概况

从ABS/PC和ABS/HPVC两种塑料合金的相容性入手,主要介绍了它们的微相结构。力学性能及其增容剂的研究发展状况。     

Preparation and interaction characteristics of exfoliated ABS/organoclay nanocomposite

A series of poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS)/organoclays (Cloisite10A, Cloisite25A, and Cloisite30B) nanocomposites are prepared via two different methods: one is a solution blending and the other is a two‐step process where the solution blended mixture is subsequently compounded in the melt state using a torque rheometer (SOAM method). The effect of surfactants on the surface of three different organoclays that are modified with alkylammonium salts in polymer/organoclay nanocomposites is investigated by focusing on two major aspects; Flory‐Huggins interaction parameters and physical (thermal and mechanical) properties. The d‐spacing of both neat organoclays and intercalated/exfoliated organoclays is examined by X‐ray diffraction analysis, and the microstructure of these nanocomposites is examined by FE‐TEM. Solubility parameters of both polymer and organoclays of interest are calculated according to the group contribution method. Viscoelastic behavior of the nanocomposites is also investigated by measuring rheological properties under an oscillatory shear. The increase in the onset temperature of the thermal degradation indicates the enhancement of thermal stability of ABS due to intercalation or partial exfoliation. Mechanical properties, such as, tensile strength, tensile modulus, and elongation at break of the nanocomposites are measured. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers     

Effect of organoclay incorporation and blending protocol on performance of PA6/ABS nanocomposites compatibilized with SANMA

The effect of organoclay incorporation and four different blending protocols on morphological, rheological, thermal, thermomechanical, and mechanical properties of PA6/ABS/SANMA/OMMT (55.0/35.0/5.0/5.0 wt%) nanocomposites was evaluated. As expected, even only with minor amounts of clay loading, significant reinforcement effect on mechanical and thermomechanical properties was achieved. Despite the morphological and structural similarities between studied compositions, it was found that mixing sequence might have great influence in mechanical properties, particularly in toughness. It is supposed that compatibilizing process though in situ reactions is much more efficient when PA6, ABS and SANMA are blended in the same extrusion step. Otherwise, when such condition is not satisfied, PA6/OMMT interactions seems to hamper the compatibilizing effect of SANMA, leading to inferior impact strength. POLYM. ENG. SCI., 57:1147–1154, 2017. © 2017 Society of Plastics Engineers     

Experimental Studies on Thermo-Mechanical Behavior of Ultrasonically Welded PC/ABS Polymer Blends

This research paper attempts to investigate the performance of blended PC/ABS joints using the ultrasonic material joining process. The key focus is on examining the thermal aspects during the joining of PC/ABS blends using ultrasonic welding and the subsequent mechanical testing to determine the strength of the weldments. Thermal behavior of the blends during welding may govern or alter the mechanical properties and integrity of the joints. Hence, investigations on thermal characteristics involved in PC/ABS blends when subjected to high vibrational heat generated during the ultrasonic welding process is imperative. DSC is used to measure the glass transient temperature (T_g) after subjecting it to welding. Mass loss is calculated with TGA. TGA and DSC results indicate change in T_g which are attributed to the molecular alignment occurring when the specimens are subjected to ultrasonic vibrations. Initially, two step mass losses occur that is contributed by ABS in which long single chains are associated and alters PC. SEM images reveal the absence in intermolecular compounds or impurities that tend to weaken weld joints. The diffusion of these molecules is uniform in the welded region. The amorphous nature enhances the integrity of weld joints. Molded part illustrates the higher strain rate in comparison with the welded specimens. The RSM model proposed is sufficient and has limited possibility for violating the independence or the assumption of constant variance.     

抗静电PC/ABS合金材料的研究

研究了聚碳酸酯（ＰＣ）与ＡＢＳ共混体系的抗静电性能及其影响因素。结果表明：二价的烷基苯磺酰盐是ＰＣ／ＡＢＳ合金材料较好的抗静电剂,可降低材料的表面电阻率和体积电阻率;在一定范围内,抗静电剂用量越多,抗静电效果越好;用马来酸酐接枝聚乙烯作增容剂能提高ＰＣ／ＡＢＳ合金的抗静电性能;学能改善共混物的相容性,从而提高合金材料的冲击强度。     

Influence of organoclay and preparation technique on the morphology of polyamide6/polystyrene/organoclay nanocomposites

To have an improved insight about the compatibilization effect of organoclay on immiscible polymers, two different organoclays and preparation techniques were chosen to prepare polyamide6 (PA6)/polystyrene (PS)/organoclay ternary nanocomposites. The morphology analysis based on the results of X‐ray diffraction, transmission electron microscopy, and scanning electron microscopy demonstrated that the type of organoclay and preparation technique had a significant influence on the dispersion and distribution of organoclay in the polymer. It was concluded that blending PS/organoclay nanocomposite synthesized previously via in situ bulk polymerization, with PA6 can realize the full exfoliation of organoclay in the final ternarynanocomposite, while an intercalated structure was achieved by directly blending the three components. The distribution of organoclay could be controlled by tuning the surface property of clay, and hence the interfacial interaction between clay and the polymer matrix. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

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。     

PC/ABS中国专利分析

采用专利地图等方法对1985年到2008年间在中国申请的98件聚碳酸酯(PC)/苯乙烯-丁二烯-丙烯腈(ABS)专利进行了分析。PC/ABS专利的申请可以分为二个阶段,第一个阶段从1997年到2001年,以外企为主;第二阶段从2002年到2008年,以国内企业为主。数据显示,2006年是PC/ABS专利申请最繁荣的一年,申请量和申请人都是最多的。PC/ABS产品的特点影响着其专利的技术、功效分布,大多数专利密布于提高性能或赋予功能而对材料进行共混改性的技术领域。     

Effects of organoclay platelets on morphology and mechanical properties in PTT/EPDM-g-MA/organoclay ternary nanocomposites

The addition of up to 6 part per hundred (phr) of an organoclay to a 80/20 (w/w) PTT/EPDM-g-MA blend led to ternary compounds that came together as a means of balancing stiffness/strength versus toughness/ductility. The effect of organoclay platelets on morphologies and mechanical properties of PTT/EPDM-g-MA/organoclay ternary nanocomposites had been studied by SEM, TEM, WAXD, and mechanical testing. For the 80/20 (w/w) blend, the clay platelets are located inside the dispersed domains of EPDM-g-MA phase. The clay platelets do not act effectively as a barrier for the coalescence of the dispersed domains. The complex viscosities (η^∗) of the 80/20 (w/w) PTT/EPDM-g-MA blend increased with the amount of the organoclay increasing, which are proposed as the reason for the dispersed domain size (D) that becomes smaller at higher clay content. Mechanical tests show that the Young's modulus increases, whereas the tensile strength and the impact strength decrease when the content of the clay increases.