改性聚苯醚的发展及现状

介绍了改性聚苯醚（PPO）的发展历史和PPO／PS、PPO／PA、PPO／SB和PPO／饱和弹性体合铁性能及应用,简要介绍了改性剂对PPO合金性能的影响、PPO合金的加工工艺和开发方向、技术动态和发展趋势。     

磷氮复配无卤阻燃聚苯醚合金的研究

采用固体阻燃剂间苯二酚双[二(2,6-二甲苯基)磷酸酯](RXP)及其与三聚氰胺氰脲酸盐(MCA)的复配阻燃剂,制备了无卤阻燃聚苯醚/高抗冲聚苯乙烯/苯乙烯-丁二烯-苯乙烯热塑性弹性体(PPE/PS-HI/SBS)合金,通过氧指数、水平垂直燃烧、扫描电子显微镜、力学性能等测试分析方法,考察了PPE/PS-HL/SBS合...     

PPE的化学改性及在离子交换膜中的应用

介绍了聚苯醚(PPE)在化学改性方面的研究进展,简述了各种封端剂对低分子量PPE进行封端改性,重点描述了使用溴化、磺化等对PPE功能化改性,指出了目前将PPE由热塑性树脂向热固性树脂改性的发展方向,并对改性的PPE在阴离子交换膜中的应用进行了总结,得出了控制好吸水率、离子交换能力与力学性能的平衡是制备阴离子膜的关键.分...     

高性能覆铜板用聚苯醚/环氧树脂体系

简要介绍了高性能覆铜板对基材的性能要求及聚苯醚和环氧树脂分别作为覆铜板基材的优缺点;PPE/EP是具有最高上临界温度的体系,详细讨论了PPE的分子量和用量、相容剂以及改性PPE对PPE/EP体系相容性的影响。采用PPE/EP体系制得的覆铜板(如RG-200)比传统的FR-4覆铜板的介电性能和耐热性能均有大幅度的提高。     

聚苯醚改性的研究进展与应用

综述了高抗冲聚苯乙烯、玻璃纤维、苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物、聚丁二烯、尼龙6、低密度聚乙烯、环氧树脂、氰酸酯等对聚苯醚(PPE)材料的改性.介绍了聚苯醚改性后在电子、汽车、医疗设备、纺织机械等领域的应用.     

玻纤增强聚苯醚合金的制备与性能研究

通过熔融挤出的方法制备了不同玻纤含量增强的聚苯醚合金（MPPO）,并对复合材料的力学性能和热性能进行了详细的研究。通过DSC分析测试发现弹性体苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物（SEBS）与聚苯醚合金（PPO／HIPS）制备的复合材料只有一个明显的玻璃化转变温度Tg,说明SEBS与聚苯醚合金有着良好的相容性,SEBS的加入可明显改善聚苯醚合金的缺口冲击强度。此外,复合材料随着玻璃纤维含量的增加,其力学性能和热变形温度得到了明显的提高,并达到与国外进口同类材料性能相当的水平。     

聚苯醚/聚丙烯合金的制备及相容性研究

采用双螺杆挤出机熔融共混的方法,制备了聚苯醚/聚丙烯合金材料。研究了不同相容剂种类对PPE/PP合金力学性能、熔体流动性(无剪切和有剪切)和耐热性的影响,并用扫描电镜观察了氯仿刻蚀后的合金体系的形态结构。结果表明,SEBS-g-PP可以很好的改善PPE和PP的相容性,PPE分散相以微小粒径的方式分散在PP连续相中,得到的合金具有最佳的力学性能、流动性和耐热性,冲击强度为285 J/M。     

国产聚苯醚及其合金的研究进展

介绍了国产聚苯醚（PPO）分子结构性能和加工性能以及应用国产聚苯醚共混得到的聚苯醚／聚苯乙烯合金（PPO／PS）和聚苯醚／尼龙合金（PPO／PA）的技术动向和研究进展,对今后合金的开发进行了展望。     

聚合物合金技术动向(下)

2.3 聚苯醚系聚合物合金 聚苯醚(改性PPO/PPE)系聚合物合金已从PS(聚苯乙烯)、HIPS(高抗冲聚苯乙烯)开始并扩大到与ABS、PA、聚烯烃、聚酯、热塑性弹性体、PPS等组成合金,用作工业的新材料。 PPE/PS系相容性聚合物合金,所显示的玻璃化温度有加成性,扩大了材料的应用范围。目前已应用于电气电子及其相关领域、OA机器、汽车部件、给排水部件、精密部件等,形成了相当大的市场。该类合金技术的特征有:应用PS、HIPS技术,控制PS分子     

聚苯醚/环氧体系非等温固化行为及固化工艺

采用程序升温差示扫描量热仪（DSC）法,用Kissinger方程研究了聚苯醚（PPE）/环氧（EP）体系不同配比混合物的固化反应动力学特征。非等温DSC研究表明PPE/EP体系的固化反应过程比较复杂,其动力学参数受PPE含量的影响较大,PPE/EP混合物的固化反应起始温度随PPE含量的增大而增大,最大放热峰的峰温均随着PPE含量的增加而减小。Kissinger法计算得到PPE/EP体系10% PPE、20% PPE、40% PPE含量（质量）的表观活化能依次为63.88、55.37、47.31 kJ·mol^-1, 说明PPE可以促进环氧树脂的固化反应。在此基础上,以20% PPE/EP体系为例,采用T - β 图外推法,得到了其固化工艺     

聚苯醚与尼龙6共混物的增容改性

以PPE／PA6共混物为基体,进行性能与结构的表征,对比了不同PPE／PA6比例的共混物性能以及添加增容改性树脂、增韧剂的使用效果。结果表明,增容改性树脂可使得PPE树脂粒子变得均匀,在提高共混材料的韧性的同时,改善了材料的拉伸性能;而弹性体虽可以提高PPE与PA6的共混物的冲击性能,但拉伸性能下降;添加5％增容改性树脂有助于改善玻纤增强PPE／PA6材料的力学性能。     

Properties of immiscible polymer alloys without compatibilizer

The miscibility and properties of the alloys composed of polyphenylene ether (PPE), polystyrene (PS), and acrylonitrile-styrene (SAN) polymers have been studied. The heat distortion temperature and flexual strength decreased with increasing AN contents in SAN in PPE/SAN alloys because the mutual solubility was poor in the high-AN content region. However, PPE/PS/SAN alloys showed higher heat distortion temperature and higher flexural strength than the PPE/PS miscible alloy and the PPE/SAN immiscible alloy. Furthermore, the PPE/PS/SAN alloy has excellent fluidity. It is a kind of immiscible alloy without a compatibilizer, which shows the excellent properties. The results suggested that there is a so-called “entanglement phase” between two separated phases and PPE distributed to both phases, and this phase is superior to that in which compatibilizer was added to enhance miscibility. Moreover, it is very useful for recycling materials because it does not contain a sophisticated compatibilizer. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 2515–2520, 1998     

柠檬酸原位增容聚苯醚/尼龙66合金的研究

为解决聚苯醚(PPE)和尼龙66(PA66)的相容问题,选用柠檬酸进行原位增容,采用两种不同的挤出共混方式制备PPE/PA66合金,并与现有增容剂PPE-g-MAH的增容效果进行了对比。考察增容剂对合金力学性能和微观形貌的影响,并探讨柠檬酸的增容机理。结果表明,柠檬酸原位增容时,选用两步挤出工艺,能够得到力学性能优良的合金,当柠檬酸用量为1份时,合金的拉伸强度为70.31 MPa,弯曲强度为89.23 MPa,冲击强度为15.76 kJ/m2。用柠檬酸原位增容时,合金的分散相尺寸明显减小,均匀性得到改善。。     

雷达罩用高性能氰酸酯树脂制备及性能

采用马来酸酐(MAH)改性低分子量聚苯醚(PPE),通过熔融共混法将改性聚苯醚(MAH-PPE)与氰酸酯(CE)树脂进行共混,分析研究MAH-PPE添加量对CE体系热性能、力学性能和介电性能的影响.研究结果表明,MAH-PPE对CE树脂的固化具有明显催化作用,动态热机械和热重分析表明,加入MAH-PPE对CE的耐热性影...     

聚苯醚及其合金的供需和应用

叙述了近年来美国、日本和西欧聚苯醚及其合金的供需现状（生产能力、消费结构）和应用。     

Controllable Synthesis of Submicrometer Core–Shell Modifier and Its Effect on Toughening Polypheylene Ether/Polystyrene Blends

Core–shell polybutadiene-graft-polystyrene (PB-g-PS) graft copolymers with different ratios of PB to PS are synthesized by emulsion polymerization. Further, the PB-g-PS copolymers are blended with polypheylene ether (PPE) and PS to prepare PPE/PS/PB-g-PS blends. The effects of PB-g-PS copolymer structure and matrix composition on the morphological, mechanical properties, and deformation mechanism of the blends are studied. The results show that the synthesized submicrometer-sized PB-g-PS copolymer has an excellent toughening efficiency, both the copolymer and PS are introduced into PPE resin to produce a ternary blend which is combined with high toughness and processing properties. The optimum toughening effect on PPE/PS matrix is observed at the core–shell weight ratio of 70/30 in PB-g-PS copolymer, and the impact strength of the blends increased from 101 to 550 J m⁻¹. In addition, the dispersion pattern of rubber particles in the matrix gradually changes from uniform dispersion to aggregation as the core–shell ratio of PB-g-PS copolymers increases. On the other hand, with the increase of PPE content, the dispersion of rubber particles in PPE/PS matrix is improved, and the deformation mechanism is changed from cracking to a combination of crazing and shear yielding, which can lead to absorb more energy to achieve better toughness.     

Flame retardancy and rearrangement reaction of polyphenylene-ether/polystyrene alloy

The flame retardancy and the rearrangement reaction of polyphenylene-ether [poly-(oxy-2,6-dimethyl-1,4-phenylene), PPE] and polyphenylene-ether/polystyrene (PS) alloys have been studied. The flame retardancy of PPE blended with phosphates was proportional to PPE content as well as to the phosphates. The surface temperatures of PPE during a combustion was higher than that of PS, whereas PPE is more flammable than PS. The element analysis of the polymer surface showed that carbon was richer compared with the content of the newly synthesized PPE. Four monomeric and eight dimeric scission products were recovered by thermogravimetric-mass (TGA-MASS) analysis at high temperature in inert atmosphere. These structures of the scission products suggested that the rearrangement reaction occurred in combustion at high temperature. Namely, the formation of carbonaceous materials on the surface followed the rearrangement reaction and dehydration which was accelerated by the addition of aromatic phosphates. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 1175–1183, 1997