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聚苯硫醚耐磨性能研究 总被引:1,自引:0,他引:1
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. 相似文献
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梅庆祥 《现代塑料加工应用》1992,(3):49-53
介绍了国外高性能工程塑料合金的发展状况。近年来,耐高温、高强度的特种树脂发展迅速,但其综合性能欠佳、成型性差而影响加工与应用。许多公司采用合金化的方法制成各种高性能塑料合金并已成为改性的主要方向。一般是特种树脂与通用型工程塑料(PA、PC、POM、PPO、PBT、PET)或弹性体进行共混改性。高性能工程塑料合金已成为宇航、卫星、飞机、电子、汽车等高技术领域所必需的新型材料,因此受到重视。 相似文献
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介绍了开发聚酯PET/PC合金的必要性及应用优势,用熔融共混法制备PET/PC的工艺条件。对PET/PC合金的相容性和力学性能进行了研究。结果表明:制备PET/PC合金可行,且其力学性能完全满足工程塑料方面的应用。并在某些方面改善了PC的力学性能。 相似文献
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《塑料科技》2016,(10):34-38
分别以乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯(E-MA-GMA)、苯乙烯-丙烯腈-甲基丙烯酸缩水甘油酯(StAN-GMA)以及苯乙烯-(乙烯-丁烯)-苯乙烯嵌段共聚物接枝马来酸酐(SEBS-g-MAH)为相容剂,采用熔融共混的方法制备了改性聚苯硫醚/聚酰胺66(PPS/PA66)共混物。通过毛细管流变分析,研究了PPS及相容剂用量对PPS/PA66共混物流变性能的影响。结果表明:PPS/PA66共混体系为非牛顿假塑性流体,其表观黏度随剪切速率的增大而减小;随着PPS用量的增加,共混体系的非牛顿指数降低,其流变性能逐渐偏离牛顿型流体;随着相容剂用量的增加,PPS/PA66/E-MA-GMA体系的熔体黏度明显增大,PPS/PA66/St-AN-GMA体系的熔体黏度则先下降后上升,而PPS/PA66/SEBS-g-MAH体系的熔体黏度变化不大。 相似文献
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通过熔融共混制备了聚苯硫醚/无苯基聚甲基乙烯基硅氧烷(PPS/NPMVS)共混物及聚苯硫醚/单苯基聚甲基乙烯基硅氧烷(PPS/SPMVS)共混物,并对该共混物体系的微观形貌及力学性能进行了分析表征。结果表明,弹性体在共混物中均匀分散,弹性体的加入对PPS基体起到明显的增韧效果;当弹性体的含量为3 %(质量分数,下同)时,2种共混材料的增韧性能最佳,PPS/NPMVS共混材料的断裂伸长率相对于PPS基体提高了3.9倍,PPS/SPMVS共混材料的断裂伸长率相对于PPS基体提高了2.4倍;当NPMVS含量为10 %时,PPS/NPMVS共混材料的冲击强度相对于PPS基体提高了1.8倍,当SPMVS含量为3 %时,PPS/SPMVS共混材料的冲击强度相对于PPS基体提高了1.4倍。 相似文献
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新型工程塑料聚苯硫醚发展概况及市场分析 总被引:1,自引:0,他引:1
聚苯硫醚是促进我国高技术产业发展和传统产业升级不可缺少的一种新型高分子材料,作为通用工程塑料高性能化、特种工程塑料低成本化的材料品种之一,已被列入《中国高新技术产品目录》和《当前国家重点鼓励发展的产业产品和技术目录》,目前在国内具有良好的发展潜力和广阔的市场前景。这里简要介绍聚苯硫醚的物化性能、国内外发展概况及供需现状、应用领域和市场前景方面的一些情况。 相似文献
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Witold Brostow Kwan-Ho Seo Jong B. Beak Jeong C. Lim Kwan-Ho Seo 《Polymer Engineering and Science》1995,35(12):1016-1021
The miscibilities of poly(phenylene) sulfide/poly(phenylene sulfide sulfone) (PPS/PPSS) and poly(phenylene) sulfide/poly(phenylene sulfide ether) (PPS/PPSE) blends were invesigated in terms of shifts of glass transition temperatures Tg of pure PPS, PPSS, a dn PPSE. The crystallization kinetics of PPS/PPSS blends was also studied as a function of molar composition. The PPS/PPSS and PPS/PPSE blends are respectively partially and fully miscible. PPSE shows a plasticizing effect on PPS as does PPS on PPSS, which necessarily improves te processibility in the respective systems. We can control Tg and melting temperature Tm of PPS by varying amounts of PPSE in blends. The melt crystallization temperature Tmc of PPS/PPSE blends was higher than that of the PPSE homopolymer. Therefore, these blends require shorter cycle times in processing than pure PPSE. The overall rate of crystallization for PPS/PPSS blends follows the Avrami equation with an exponent ?2. The maximal rate of crystallization for PPS/PPSS blends occurs at a temperatre higher by 10°C than that for PPS, while the crystallization half time t1/2 is 4 times shorter. In the cold crystallization range, crystal growth rates increase and Avrami exponents decrease significantly as the temperature increases. 相似文献
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PPEK/PPS共混物流变性能的研究 总被引:2,自引:0,他引:2
通过熔融挤出的方法制备了含不同比例的二氮杂萘酮结构的聚芳醚酮(PPEK)和聚苯硫醚(PPS)共混物,并用毛这流变仪研究了该共混物的流变性能。在所研究的温度和剪切速率范围内,当PPS窗户低时,PPEK/PPS共混物溶体为典型的假塑性流体,而当PPS含量为60%时,共混物则近似为牛顿流体。PPS的混入极大地降低了PPEK的熔体粘度,而且在一定范围内,随PPS含量的增加,可有效地改善挤出物外观。同时考察了剪切速率,实验温度等对共混物流变性能的影响。 相似文献
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Blends of poly(phenylene sulfide) (PPS) and recycled poly(ether ether ketone) (r‐PEEK) were prepared using a twin‐screw extruder. The carbon nanotube (CNT) added to the blends not only improved the compatibility of the two polymers, but also affected the morphology of the immiscible PPS/r‐PEEK blends. R‐PEEK always forms the dispersed phase and PPS the continuous phase in such blends. In the composite, CNT particles were observed in the PPS phase, mostly distributes in the interface between PPS and PEEK. The results show that r‐PEEK improves the impact and tensile strength of PPS, but does not provide nucleation effect on PPS. However, CNT improved the flexural modulus of PPS/r‐PEEK blends and promoted the crystallization of r‐PEEK rather than that of PPS. The prepared PPS/r‐PEEK blends provided larger electrical conductivity than neat polymers. Adding 20 wt % CNT to blend resulted in composite with the minimum volume resistivity, a reduction of four orders of magnitude, compared with that of the neat blend. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42497. 相似文献