芳纶混杂复合材料研究进展

对芳纶混杂复合材料的研究进展进行综述,包括芳纶/碳纤维、芳纶/玻璃纤维、芳纶/玄武岩纤维、芳纶/超高分子量聚乙烯纤维、芳纶/陶瓷纤维、芳纶/麻等二元混杂及多元混杂体系。     

一种抗蠕变超高相对分子质量聚乙烯纤维混杂织物及其制备方法

本发明涉及一种抗蠕变超高相对分子质量聚乙烯纤维混杂织物及其制备方法。该混杂织物是由超高相对分子质量聚乙烯纤维、碳纤维等其它有机或无机纤维通过混纺或单纺混编而成,本发明利用纤维的混杂效应,综合各种纤维各自的优点,制备成一种可应用于结构件复合材料的抗蠕变超高相对分子质量聚乙烯纤维混杂织物,改善了单一超高相对分子质量聚乙烯纤维的抗蠕变性能及其与基体材料的粘结性能,该织物可应用于需长时间承受载荷的结构件复合材料。     

承载/声隐身混杂纤维复合材料的研究

通过试验获取了碳纤维(CF)、凯夫拉纤维(KF)、玻璃纤维(GF)、超高分子量聚乙烯纤维(UHMPEF)复合材料的力学性能和声学性能参数,在此基础上分别利用等效刚度法和传递矩阵法,对CF/UHMPEF、CF/KF、CF/GF混杂纤维复合材料的拉伸刚度、声反射系数和声透射系数进行计算。结果表明,材料的刚度和强度基本相同的条件下CF/UHMPEF复合材料声压反射系数最小,其次是CF/KF复合材料,再次是CF/GF复合材料。10kHz频率范围内3种混杂材料的声透射系数都达到95%以上。     

超高分子量聚乙烯纤维及其复合材料的现状和发展

高强PE纤维又叫超高分子量聚乙烯(UHMWPE)纤维,它是上世纪70年代末研制成功、并于80年代初进入产业化的一种高性能纤维,与碳纤维、芳纶并称为当今世界三大高科技纤维.     

BF/CF层间混杂结构对复合材料性能影响

制备了碳纤维/玄武岩纤维(CF/BF)层间混杂增强酚醛树脂基复合材料,通过力学性能测试研究了混杂结构对复合材料性能的影响,并与层数相同叠合压制成型的BF复合材料的性能进行了对比。结果表明,CF/BF混杂纤维增强酚醛树脂基复合材料较BF复合材料力学性能提高,嵌层结构复合材料综合性能好于夹芯结构。     

超高分子量聚乙烯纤维增强复合材料及其防弹性能的研究进展

介绍了近年来 ,超高分子量聚乙烯纤维增强复合材料的树脂基体及其加工工艺的研究进展以及纤维与基体的粘结性能和复合材料的力学性能 ;分析了该复合材料的准静态力学行为和防弹性能。     

超高分子量聚乙烯纤维/有机玻璃复合材料摩擦磨损性能研究

用真空浸渍法成功制备出了超高分子量聚乙烯纤维／有机玻璃(UHMWPE／PMMA)复合材料，并对基体材料PMMA，单向超高分子量聚乙烯纤雏／有机玻璃复合材料以及三维编织超高分子量聚乙烯纤维／有机玻璃(即UHMWPE3D／PMMA)复合材料的摩擦磨损性能进行了研究。实验证明UHMWPE／PMMA复合材料具有优良的摩擦磨损性能。经过纤维增强的复合材料的摩擦磨损性能优于基体材料，三维编织纤维增强的复合材料其磨损远小于单向纤维增强的复合材料，但其摩擦系数没有显著变化。     

热固/塑性树脂基复合材料的市场和应用

1.热固性树脂基复合材料热固性树脂基复合材料是指以热固性树脂,如不饱和聚酯树脂、环氧树脂、酚醛树脂、乙烯基酯树脂等为基体,以玻璃纤维、碳纤维、芳纶纤维、超高分子量聚乙烯纤维等为增强材料制成的复合材料。     

超高分子量聚乙烯纤维的表面处理

综述了超高分子量聚乙烯（UHMWPE）纤维复合材料界面的重要性,总结了表面改性方法对UHMWPE纤维以及UHMWPE／树脂界面的影响。     

混杂纤维复合材料的平面剪切性能

研究了基体韧性和铺层方式对玻璃纤维、碳纤维及其混杂纤维复合材料平面剪切性能的影响。结果表明，玻璃、碳及其混杂纤维复合材料的平面剪切应力-应变曲线均具有非线性特征；在脆性基体中选用混杂结构，其复合材料的剪切性能具有正的混杂效应。     

CF/UHMWPEF混杂复合材料的力学性能研究

本文对不同铺层方式的碳纤维(CF)和高强聚乙烯纤维(UHMWPEF)混杂复合材料的力学性能进行测试,同时对UHMWPEF表面处理前后的混杂复合材料性能进行了比较。实验结果表明,经表面处理的UHMWPEF与碳纤维以(CF)0/(CF)0/(UHMWPEF)/(CF)0/(CF)0方式进行层间混杂时,其复合材料的力学性能较好。     

The effect of ambient moisture and temperature conditions on the mechanical properties of glass fiber/carbon fiber/nylon 6 sandwich hybrid composites consisting of skin‐core morphologies

The concept of skin‐core (SC) morphology was used to make sandwich hybrid composites in which the skin and core were composed of different fibers in the same matrix. The sandwich blends comprising glass skin with carbon core and vice versa were compared with those of the hybrid composite, while the respective carbon (CF) and glass fiber (GF) composites served as points of reference. The composites were compounded and fabricated into injection molded tensile specimens and 3‐mm thick plaques. The effect of ambient temperature and moisture was studied. The fracture mechanical characterization of the various materials was done by using notched compact tension (CT) specimens. Tensile properties were also used to characterize the composites. Morphogical studies based on scanning electron microscopy and light microscopy were used to elucidate fracture characteristics. Deterioration of properties was noticed under hot and humid conditions. Synergism in flexural properties was observed in the CF/GF/PA hybrid composite. The mechanical properties of the CF/GF/PA hybrid are closer to those of CF/PA, suggesting a cost advantage by substituting half of the carbon fibers with glass fibers. Dynamic mechanical analysis results revealed that synergism in T_g is attained by blending or sandwiching glass and carbon fibers. Morphological studies reaffirmed the skin‐core morphology of the composites. POLYM. COMPOS., 26:52–59, 2005. © 2004 Society of Plastics Engineers.     

Preparation and properties of multi‐walled carbon nanotubes/carbon fiber/epoxy composites

Multi‐walled carbon nanotubes/carbon fiber (MWCNTs/CF) hybrid fillers are employed to prepare MWCNTs/CF/epoxy composites. Results reveal that a great improvement of the thermal conductivities of the epoxy composites with the addition of MWCNTs/CF hybrid fillers, and the thermal conductivity of the MWCNTs/CF/epoxy composites is 1.426 W/mK with 8 vol% treated MWCNTs/CF hybrid fillers (5 vol% MWCNTs + 3 vol% CF). Both the flexural and impact strength of the MWCNTs/CF/epoxy composites are increased firstly, but decreased with the excessive addition of MWCNTs. The flexural and impact strength of the MWCNTs/epoxy composites are optimal with 2 vol% MWCNTs. For a given MWCNTs/CF hybrid fillers loading, the surface treatment of MWCNTs/CF hybrid fillers can further increase the thermal conductivities and mechanical properties of the MWCNTs/CF/epoxy composites. POLYM. COMPOS., 35:2150–2153, 2014. © 2014 Society of Plastics Engineers     

碳纳米管/碳纤维混杂多尺度增强体研究现状

碳纳米管(CNTs)优异的力学性能使其成为复合材料的理想增强材料,将CNTs引入到碳纤维(CF)表面制备CNTs/CF纳、微米复合增强体,可同时改善复合材料的界面剪切强度和冲击强度,从而获得具有优异综合性能的复合材料。本文综述了CNTs/CF混杂多尺度增强体的制备方法及其复合材料的性能。     

Tailoring Carbon Fiber/Carbon Nanotubes Interface to Optimize Mechanical Properties of Cf‐CNTs/SiC Composites

C_f/SiC composites were fabricated using fiber coatings including CNTs and matrix infiltration using the polymer impregnation and pyrolysis process. Interface between fiber and CNTs (CF/CNTs) was tailored to optimize mechanical properties of hybrid composites. The tailored interphases, such as Pyrocarbon (PyC) and PyC/SiC, protect fibers from degradation during the growth of CNTs successfully. Hybrid composites with well‐tailored CF/CNTs interface displayed significantly increased mechanical strength (352 ± 21 MPa) compared with that (34 ± 3 MPa) of composites reinforced with CNTs, which grown on carbon fibers directly. The interfacial bonding strength of hybrid composites was improved and optimized by tailoring the CF/CNTs interface. Interfacial failure modes were studied, and a firm interface bonding at the joint where CNTs grown was observed.     

聚四氟乙烯填充聚醚醚酮及其复合材料的研究

利用熔融共混工艺制备了ＰＥＥＫ／ＰＴＦＥ共混物及其复合材料,研究了ＰＴＦＥ对ＰＥＥＫ共混物及其复合材料力学性能和耐磨性的影响,结果表明,ＰＥＥＫ经１０％￣ＰＴＦＥ填充改性,玻纤／碳纤混杂增强后,由于磨损方式的改变,使该复合材料不仅保持了良好的物理力学性能,而且具有较低的摩擦系数,耐磨性也得到明显改善。     

基于FBG传感器的CF/GF混杂复合材料界面变形研究

利用FBG传感器对采用真空导入模塑工艺制作的CF/GF(Carbon Fiber/Glass Fiber)混杂复合材料在固化成型过程中以及成型后的界面性能进行了检测,此外,为了对比研究混杂复合材料的性能,还检测了CF/CF层和GF/GF层在成型和成型后的应变变化。结果显示:GF/GF、GF/CF和CF/CF复合材料的应变与温度之间存在良好的线性关系,且热膨胀系数的大小顺序为GF/GF层GF/CF层CF/CF层;FBG传感器监测CF/GF混杂复合材料热膨胀系数的转折温度与基体树脂的T_g值(79.09℃)相吻合;CF/GF混杂复合材料在20~120℃范围内升温、降温过程中未发生界面破坏。     

Effect of various methods of pre-treatment of carbon fibers on the mechanical properties of PIP-based ceramics/carbon composites

The purpose of the work was to determine the conditions of CF preparation to obtain carbide composites with favorable mechanical response. The relationships between the interfacial properties of fiber/polymethylsiloxane composite, and mechanical properties of the resulting fiber/carbide composites were investigated. The CF/resin interfacial strength was modified by oxidation of CF surface with nitric acid, silanization, and depositing CNT or a pyrolytic carbon layer (PyC). The study of composite interphases (ILSS and SEM) and surface tests of the modified CF (XPS, FT-IR, wettability measurements) showed different nature of the bonding occurring at the fiber/resin and fiber/ceramics boundary. The CF silanization significantly improved the ILSS between CFs and resin by 38.5%, while reduced flexural properties of carbide composites. The most promising treatment method of CF for PIP-based ceramic composites was modification with PyC, which provided 2 times higher ILSS, 1.5 times higher flexural strength and improved work to fracture (WF) as compared to unmodified CF.