我国ABS树脂发展概况

随着我国家电和汽车工业的不断发展以及大众消费的升级换代,ABS树脂在国内的需求呈现快速增长的趋势,2001～2007年年均增长率达12.7%.与此同时,国内各厂家纷纷开始投资研究ABS生产技术以提高ABS产品质量,也吸引许多企业新建ABS树脂生产装置.     

国内外ABS树脂生产现状及发展预测

介绍了ABS树脂的主要生产方法，分析了国内外ABS树脂的生产现状和市场前景。     

耐高温ABS树脂的研究

提高国内ABS树脂质量,研究开发高品质,高性能ABS树脂时提高国内ABS树脂竞争能力的必备手段。     

ITO溅射靶材国内外研究状况

本文综述了ITO靶材的国内外研究、制造技术和国内市场应用状况。详细阐述了ITO溅射靶的物理性能、国外制造ITO溅射靶的主要方法、国内研究状况。系统分析了ITO溅射靶制造技术方面的专利。     

ABS树脂技术发展趋势

论述了ABS技术的发展现状及发展趋势。简述了ABS树脂主流技术特点、新产品开发等最新进展。介绍附聚技术、大粒径胶乳、湿法挤出、连续本体聚合以及基础胶乳等对ABS树脂技术的重大影响。预测了ABS专用料、ABS合金等新产品的发展趋势,指出改性技术对高功能ABS树脂材料的制造具有重要作用。     

韩国LG公司进军3D打印材料市场

正据韩国IT时代报道,LG公司将对3D打印材料市场进行一场突袭,鉴于3D打印技术的快速商业化,该公司计划比竞争对手更迅速地探索新兴市场,3D打印技术是被视为一只正加速上涨能够引起第三次工业革命的潜力股。据业内人士称,L G公司正与世界第二大3D打印公司Stratasys协商供应高附加合成树脂ABS的相关事宜。由于ABS耐光和抗震性,因此成为汽车、家电、医疗设备等领域金属的理想替代品。目前,超过半数的3D打印机使用ABS作为成品造型材料。     

阻燃ABS树脂及其合金的研究进展

ABS树脂是目前应用最广的一种热塑性工程塑料,它可以单独使用,也可以制成具有某些特殊性能的合金材料,ABS树脂尤其适用于汽车、电器行业。因此对其阻燃性能要求十分严格。目前,国内外对ABS树脂及其合金的阻燃研究十分活跃,其阻燃体系主要有：(1)含卤阻燃体系;(2)有机含磷、氮、硅阻燃体系;(3)无机阻燃体系,包括红磷阻燃和无机氢氧化物等的阻燃。文中简要介绍了国内外阻燃ABS树脂及其舍金的研究方法和进展情况。     

浅析ABS生产工艺技术及发展况状

本文主介绍了ABS树脂的工业生产技术,乳液接枝一本体SAN掺混生产技术和连续本体聚合法,以及近年来ABS技术的发展况状和发展趋势。介绍了改性技术、新兴技术、以及纳米技术在ABs附脂合成上的应用,以及ABS专用料的发展方向。     

氢化丁腈橡胶生产技术及市场发展

本文综述了国内外氢化丁腈橡胶技术进展情况,分析了国内市场应用前景,提出了我国氢化丁腈橡胶发展建议。     

无卤阻燃PC/ABS合金研究进展

综述了近年来国内外PC/ABS合金无卤阻燃改性的研究进展。介绍了PC/ABS合金体系无卤阻燃剂的分类、阻燃机理及存在的一些问题和解决方法。重点阐述了有机磷系阻燃剂及其对PC/ABS合金的阻燃性能、热分解和力学性能等的影响,并指出了今后的研究重点和发展方向。     

SAN树脂相对分子量的连续变化对ABS树脂力学性能的影响

通过乳液聚合方法合成了一系列相时分子量连续变化的SAN树脂。将其与同一种PB-g-SAN接枝共聚物进行熔融共混,测试了制得的ABS树脂的力学性能。测试结果表明．合成过程中分子量调节剂TDDM用量越多,SAN树脂的相对分子量越低,SAN树脂的熔体流动速率越高。以相同橡胶含量共混制得的ABS树脂的冲击强度越高,拉伸强度和断裂伸长率也越高。系统考察SAN树脂相对分子量的变化时制得的ABS树脂力学性能的影响,时生产特种牌号ABS树脂具有借鉴作用。     

Studies on the runaway reaction of ABS polymerization process

Taiwan has the largest acrylonitrile-butadiene-styrene (ABS) copolymer production in the world. Preventing on unexpected exothermic reactions and related emergency relief hazard is essential in the safety control of ABS emulsion polymerization. A VSP2 (Vent Sizing Package 2) apparatus is capable of studying both normal and abnormal conditions (e.g., cooling failure, mischarge, etc.) of industrial process. In this study, the scenarios were verified from the following abnormal conditions: loss of cooling, double charge of initiator, overcharge of monomer, without charge of solvent, and external fire. An external fire with constant heating will promote higher self-heat rate and this is recommended as the worst case scenario of emulsion polymerization on butadiene. Cooling failure coupled with bulk system of reactant was determined to be the credible worst case in ABS emulsion polymerization. Finally, the emergency vent sizing based on thermokinetics from VSP associated with DIERS methodology were used for evaluating the vent sizing and compared to that of the industrial plants.     

ABS-maleated SEBS blend as a 3D printable material

A key enabler for the advancement of material extrusion 3D printing is the implementation of new printable materials with a wide variety of physical properties. The focus of this study is the development of 3D printable polymer blends based on compounding acrylonitrile butadiene styrene (ABS) with styrene ethylene butylene styrene. Here the mechanical properties of the resulting novel material systems were manipulated through the change of mixture composition. The novel blends were evaluated based on mechanical testing and fracture surface analysis. Additionally, the rheological characteristics were determined based on melt flow index values. Key results were the significant increase in elongation at break values from 8.53% (ABS baseline) to 1506.57% (rubberised ABS) and the drastic difference in fracture surface morphology when comparing the various blends to ABS.     

Experimental investigation of the viscoelastic deformation of PC, ABS and PC/ABS alloys

Dynamic Mechanical Analysis (DMA) tests are carried out to investigate the viscoelastic deformation of PC, ABS and PC/ABS alloys with ratio of PC to ABS being 80/20, 60/40, 50/50, 40/60, respectively. Storage and loss moduli and loss angle of PC, ABS and PC/ABS alloys are measured from DMA tests from 30 °C in 160 °C at 1 Hz. Glassy temperature of PC/ABS alloys is determined with loss modulus and loss angle curves. Also, static tests are carried out to measure the relaxation moduli of PC, ABS and PC/ABS alloys. Effect of ABS fraction on the glassy transition temperatures and relaxation moduli of PC/ABS alloys is discussed.     

Mechanical characteristics of oil palm fiber reinforced thermoplastics as filament for fused deposition modeling (FDM)

Fibers are increasingly in demand for a wide range of polymer composite materials. This study's purpose was the development of oil palm fiber (OPF) mixed with the thermoplastic material acrylonitrile butadiene styrene (ABS) as a composite filament for fused deposition modeling (FDM). The mechanical properties of this composite filament were then analyzed. OPF is a fiber extracted from empty fruit bunches, which has proved to be an excellent raw material for biocomposites. The cellulose content of OPF is 43%-65%, and the lignin content is 13%-25%. The composite filament consists of OPF (5%, mass fraction) in the ABS matrix. The fabrication procedure included alkalinizing, drying, and crushing the OPF to develop the composite. The OPF/ABS materials were prepared and completely blended to acquire a mix of 250 g of the material for the composition. Next, the FLD25 filament extrusion machine was used to form the OPF/ABS composite into a wire. This composite filament then was used in an FDM-based 3D printer to print the specimens. Finally, the printed specimens were tested for mechanical properties such as tensile and flexural strength. The results show that the presence of OPF had increased the tensile strength and modulus elasticity by approximately 1.9% and 1.05%, respectively. However, the flexural strength of the OPF/ABS composite had decreased by 90.6% compared with the virgin ABS. Lastly, the most significant outcome of the OPF/ABS composite was its suitability for printing using the FDM method.The full text can be downloaded at https://link.springer.com/content/pdf/10.1007%2Fs40436-019-00287-w.pdf     

阻燃PC/ABS的热降解动力学

将自合成的一种新型含磷阻燃剂DPWDF与PC/ABS共混;利用热重分析(TGA)法研究了PC/ABS和阻燃PC/ABS在空气氛围中的热稳定性,利用Flynn-Wall-Ozawa方法研究了PC/ABS及阻燃PC/ABS的热降解动力学。结果表明,阻燃剂降低了PC/ABS初始分解温度(IDT)而提高了它的高温残炭量;在转化率70%以前,阻燃PC/ABS的活化能低于PC/ABS,而在转化率70%以后,阻燃PC/ABS的活化能高于PC/ABS。此实验结果体现了该含磷阻燃剂的凝聚相阻燃机理。     

PC／ABS共混物形态的研究

研究了PC/ABS共混物的抗冲击样条的切片形态和取向程度。结果表明:共混物中接技橡胶粒子是包藏在SAN相中的。PC/ABS=25/75时,PC为分散相并呈粒状沿注射方向拉长。PC/ABS=75/25时,ABS为分散相并沿注射方向呈纤维状和层状。PC/ABS=50/50时,PC和ABS都为连续相且沿注射方向呈层状排列。原料对共混物形态和取向有影响,其中以ABS的影响最为显著。     

笼形八乙烯基硅倍半氧烷／ABS复合材料的热性能和阻燃性

通过螺杆挤出成型法制备了笼形八乙烯基硅倍半氧烷(OVP)/ABS复合材料,采用TGA、氧指数仪和锥形量热仪研究OVP的加入对复合材料热性能和阻燃性能的影响。研究结果表明,在添加引发剂(DCP)的条件下,当乙烯基OVP含量为6.25%时,复合材料的初始分解温度由纯ABS的174℃上升到209℃;氧指数由纯ABS的17.8%上升到的21.4%;热释放速率峰值降为529 kW/m2,比纯ABS降低了近30%。采用SEM对燃烧过后的残炭进行了分析,并探讨了其阻燃机理。     

ABS/SBS和ABS/GF环状试样的疲劳性能

采用ABS/SBS和ABS/GF材料成型了圆环状试样,使用了自行设计的试验装置对环状试样进行疲劳试验,分析比较在环状下不同填料对ABS的疲劳性能的影响。从而获得ABS/SBS和ABS/GF环状试样在不同应力下的疲劳曲线和疲劳变化趋势。