聚苯硫醚填充改性的研究进展

针对聚苯硫醚（PPS）韧性较差、价格高等缺点,介绍几种常用填料如玻璃纤维、碳纤维、氧化锌、芳纶、纳米材料等对PPS改性的研究进展,讨论了填料对PPS微观结构、力学性能及加工性能的影响,并指出国内在此研究领域中存在的一些不足。     

聚苯硫醚填充与共混改性研究进展

聚苯硫醚(PPS)是一种高性能的工程塑料,耐高温、耐腐蚀、耐辐射、耐磨,具有良好的电学性能、尺寸稳定性以及阻燃性,因而在电工电子、石油化工、汽车、环保等领域内得到广泛应用。简要介绍了PPS化学改性的优缺点,并着重针对物理改性中的填充改性和共混改性进行了系统的阐述,其中包括无机填料和纤维对PPS的填充改性,通用塑料、工程塑料以及特种工程塑料与PPS的共混改性。最后,对于我国未来PPS改性产业发展提出了几点建议。     

抗氧剂改性聚苯硫醚纤维抗热氧化性能的研究进展

介绍了聚苯硫醚(PPS)的氧化机理、抗氧剂的抗氧机理,以及抗氧剂在PPS改性中的应用;综述了抗氧剂改性PPS的研究现状,展望了抗氧剂改性PPS的发展前景;提出选用抗氧剂与PPS共混改性原则,将抗氧剂组装到纳米粒子,再复合至PPS材料,协同改善了PPS的热氧化稳定性,是今后的一个研发方向,并应进一步探究抗氧剂的抗氧机理及提升PPS复合材料的综合耐热氧化性能。     

聚苯硫醚改性研究的进展

聚苯硫醚(PPS)是一种具有耐腐蚀、耐高温、尺寸稳定性高、阻燃性能好的特种工程塑料。介绍了PPS的物理改性,包括PPS的增强增韧、共混合金及其抗氧化等。PPS的增强改性包括使用纤维及其他纳米结构材料增强;增韧改性包括添加弹性体及刚性粒子增韧;PPS共混合金包括与通用工程塑料及与特种工程塑料共混;PPS的抗氧化改性主要是通过添加抗氧剂实现的。     

聚苯硫醚的改性与发展趋势

简述了聚苯硫醚(PPS)优异的综合性能,并介绍了PPS当前的应用状况,以及用纳米材料和其他聚合物与PPS共混改性和化学改性的研究及应用,深入分析了PPS复合材料性能差异的结构、形态原因,最后对PPS未来的发展趋势进行展望。     

微纳米填料填充改性聚苯硫醚研究进展

简述了聚苯硫醚(PPS)性能上的优缺点,并对其改性方案进行简要分析,着重介绍了广泛使用的微纳米填料填充改性。根据改性填料种类可分为碳材料、无机矿物、纤维填料的单一填充改性,以及多填料复配填充等4个方面。分别简述了改性填料的处理、PPS/填料复合材料的加工成型,以及复合材料热学、电磁、力学等性能的改性结果,为PPS的改性及应用提供一定的理论指导。最后,提出了目前PPS改性存在的不足,并对我国未来PPS改性产业发展提出了建议。     

聚苯硫醚纤维增强增韧改性研究进展

综述了有机材料/聚苯硫醚(PPS)纤维及纳米粒子/PPS纤维的增强增韧改性技术进展;详述了PPS与超支化PPS、聚酰胺66、聚四氟乙烯、聚苯酮硫醚、热致性液晶聚合物的共混情况;采用碳纳米管、纳米TiO2、纳米SiO2与PPS共混,可提高PPS的可纺性及结晶度等;分析了不同改性方法的机理及特点;提出功能材料与PPS共混是PPS增强增韧的有效手段,应提高PPS的力学性能,降低成本,实现工业化生产。     

苯并三唑/纳米TiO_2改性PPS纤维的制备及性能

为了改善聚苯硫醚(PPS)纤维的光稳定性能,将苯并三唑与纳米二氧化钛(Ti O2)按一定比例复配与PPS切片进行共混熔融纺丝,制得改性PPS纤维,研究了改性PPS纤维的可纺性及其性能。结果表明:苯并三唑/纳米Ti O2复配物的质量分数大于1.5%时,改性PPS纤维的可纺性变差;当复配物质量分数小于等于1.5%时,改性PPS纤维的表观形貌和可纺性满足工业生产要求;随着苯并三唑/纳米Ti O2的添加量增加,改性PPS纤维的断裂强度有所降低,断裂伸长率和热性能变化不大;当苯并三唑质量分数为1.5%,Ti O2为0时,PPS的结晶速率最大,改性PPS纤维的光稳定性能最好,光照前后的色度变化值为14.02。     

碳化硼改性聚苯硫醚短纤维的制备及抗氧化性研究

以纤维级聚苯硫醚(PPS)树脂和纳米级碳化硼为原料,采用硅烷偶联剂对纳米级碳化硼进行表面处理,将处理后的碳化硼与PPS共混熔融纺丝制备碳化硼改性PPS短纤维,利用浓硫酸对改性PPS短纤维进行氧化处理,研究纳米碳化硼含量及硅烷偶联剂含量对改性PPS短纤维抗氧化性的影响,并探讨了其抗氧化机理。结果表明：随着碳化硼含量及硅烷偶联剂含量的增加,改性PPS短纤维经浓硫酸处理后的强力保持率均呈现先增后降的变化趋势;在硅烷偶联剂质量分数(相对碳化硼)为0.7%、碳化硼质量分数(相对PPS)为1.2%时,改性PPS短纤维的抗氧化性好,纤维在浓硫酸处理下强力保持率达94.7%,比未改性PPS短纤维经浓硫酸处理后的强力保持率(84.9%)提高11.5%;碳化硼改性PPS短纤维的抗氧化机理主要是碳化硼本身具有良好的抗氧化性,硅烷偶联剂的分散作用和偶联作用也有助于提高PPS短纤维的抗氧化性能。     

炭黑改性聚苯硫醚纤维性能研究

在聚苯硫醚(PPS)树脂中加入少量的炭黑制成切片,采用熔融纺丝法制得改性PPS纤维。研究了炭黑的加入量对改性PPS纤维的取向、结晶和热性能的影响,以及改性PPS纤维经紫外光老化前后力学性能的变化。结果表明:加入炭黑可使PPS纤维取向度降低,结晶度提高;炭黑质量分数为1.5%的改性PPS纤维耐热性较好;经紫外光照射192 h后,与纯PPS纤维相比,其断裂强度保留率提高了30.3%,断裂伸长保留率提高了41.4%,抗紫外光老化性能得到了改善。     

Multiple melting behavior of polyphenylene sulfide blends with polyamide 6

Although there are many studies on the multiple melting behavior of polyphenylene sulfide (PPS) homopolymer, similar investigations on PPS component in PPS blends with thermoplastics are relatively rare. In the present paper, the multiple melting behavior of PPS blends with polyamide 6 (PA6) have been investigated by differential scanning calorimetry (DSC). The double melting peaks are also observed for PPS in the blends. Although the annealing temperature and time as well as the heating rate of DSC scanning are different, the lower melting peak temperature of PPS in the blend is higher than that of pure PPS and the higher melting peak temperature is lower than that of pure PPS. It is suggested that PA6 can accelerate the cold‐crystallization of amorphous PPS due to the possible presence of interfacial interaction between the component polymers to induce the heterogeneous nucleation, and increase the perfection of PPS crystals. The multiple melting behavior of PPS in the blends are explained by recrystallization. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1579–1585, 2000     

火焰喷涂改良型聚苯硫醚涂层研究

为了能将聚苯硫醚（ＰＰＳ）用于现场涂装，本文采用火焰喷涂法制得了改良型ＰＰＳ涂层，初步考察了不同类型，不同分子量的ＰＰＳ以及喷涂工艺对涂层性能的影响，结果表明，在一定的喷涂工艺条件下，中等分子量和高分子量的改良型ＰＰＳ比通用型ＰＰＳ涂层的成膜性，韧性和附着力都好。     

Plane strain fracture toughness of polyphenylene sulfide

The plane strain fracture toughness of polyphenylene sulfide (PPS), tested with different molecular structures such as linear PPS, heat-treated PPS, and branched PPS, was investigated over a wide range of melt viscosity and crystallinity and compared with other mechanical properties. The fracture toughness of linear PPS increased with increasing melt viscosity, and it reached the highest fracture toughness calculated from linear elastic fracture mechanics (LEFM) observed in this study. In this high melt viscosity region, the linear PPS specimen showed slow crack growth instead of brittle fracture. Although the tensile properties of heat-treated PPS and branched PPS are the same as those of linear PPS, the fracture toughness of linear PPS is superior. The fracture toughness is affected by the crystallinity of the specimen, and the effect of crystallinity on fracture toughness is smaller than that of melt viscosity and molecular structure.     

聚苯硫醚耐磨性能研究

概述了特种工程塑料聚苯硫醚(PPS)耐磨性能研究的现状和最新进展,对PPS共混合金以及有关耐磨新技术进行了全面的介绍,并展望了PPS耐磨材料的发展前景.     

Investigation on the crystallization behavior of poly(ether ether ketone)/poly(phenylene sulfide) blends

The morphology of nonisothermally crystallized poly(phenylene sulfide) (PPS) and its blend with poly (ether ether ketone) (PEEK) have been observed by polarized optical microscope (POM) equipped with a hot stage. The nonisothermal crystallization behavior of PPS and PEEK/PPS blend has also been investigated by differential scanning calorimetry (DSC). The maximum crystallization temperature for PEEK/PPS blend is about 15°C higher than that of neat PPS, and the crystallization rate, characterized by half crystallization time, of the PEEK/PPS blend is also higher than that of the neat PPS. These results indicate that the PEEK acts as an effective nucleation agent and greatly accelerates the crystallization rate of PPS. The Ozawa model was used to analyze the nonisothermal crystallization kinetics of PPS and its blends. The Avrami exponent values of neat PPS are higher than that of its blend, which shows that the presence of PEEK changed the nucleation type of PPS from homogeneous nucleation to heterogeneous nucleation. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

长纤维增强聚苯硫醚的研究进展

介绍了聚苯硫醚及其主要性能特点.系统阐述了长纤维增强聚苯硫醚的制备方法和应用领域;并对长纤维增强聚苯硫醚复合材料的发展方向进行了展望.     

聚苯硫醚在天线罩上的应用研究

采用注射成型的方法制备出某弹载聚苯硫醚(PPS)天线罩。介绍了弹载天线罩对材料性能的要求、PPS的特性,以及PPS天线罩的注射成型过程、后处理过程,并比较了PPS天线罩与聚四氟乙烯(PTFE)天线罩的性能。结果表明,PPS天线罩的可制造性、尺寸稳定性等综合性能优于PTFE天线罩。     

聚苯硫醚的成型加工技术

叙述聚苯硫醚（PPS）作为一种性能优异的特种工程塑料，同时又是一种结晶性能热塑性树脂的性能特点及应用；论述了PPS的工艺特性，模具温度与结晶度的关系；介绍了PPS制品和模具的设计中应考虑 ;乡下离PPS制品的注塑工艺，后处理工艺以及超声波焊接工艺。     

Overall Investigation of Poly (Phenylene Sulfide) from Synthesis and Process to Applications—A Review

Poly (phenylene sulfide) (PPS) is one kind of high‐performance polymer with high thermal stability that can be used widely in different industrial domains. However, according to an investigation of the literature, few reviews have comprehensively focused on the continuous development of PPS applications in the past decade. To meet this demand, this paper provides an overall investigation of PPS polymer and PPS‐based composites from synthesis and process to applications. Briefly, this paper introduces PPS materials according to the following topics. First, the molecular weight distribution and morphology of PPS, as well as their reinforced parts, are introduced. Afterward, the topic is focused on the synthesis, process, and blending of PPS. In the next part, this paper investigates the key points regarding PPS as a high‐performance polymer, focusing on the aspect of thermal behavior and mechanical properties. Finally, PPS composite applications are emphasized and overviewed from a wide range of aspects.     

聚苯硫醚复合材料的研究和应用

对聚苯硫醚(PPS)共混是材料获得更优性能和特殊新功能便捷有效的办法。本文概述了国内外聚苯硫醚复合材料研究的最新进展,对PPS/无机物和PPS/聚合物两大类共混体系的结构和性能进行了全面的介绍。