连续玄武岩纤维及其复合材料的研究

本文通过对玄武岩连续纤维在原料、物理、化学性能以及用其增强各类树脂的性能方面做了比较详细的分析对比,并由此认为,玄武岩连续纤维在耐高温、抗高温热振性、耐酸碱、弹性模量、介电等性能方面具有一定的优势,用其增强树脂在性能方面普遍优于玻璃纤维增强的玻璃钢体,它在航空航天、冶金、化工、建筑等领域具有较为广阔的应用前景。     

连续玄武岩纤维增强复合材料力学性能试验研究

连续玄武岩纤维(CBF)由于其优异的力学性能、物理性能和较低的价格,在土木工程中应用前景广泛。CBF可以与树脂复合制作片状、板状、筋状等各种各样的复合材料(CBFRP),在实际工程中科学合理应用CBFRP,必须对其力学性能作深入了解。对CBFRP片材和棒材的力学性能进行研究,重点讨论了影响CBFRP力学性能的各种参数,研究结果可为CBF及其CBF片材生产厂家提供参考,并为CBF的深入研究和工程应用打下基础。     

钢丝-连续玄武岩纤维复合板及其力学性能研究

简易制作了钢丝一连续玄武岩纤维复合板试件及其单向拉伸试验装置,通过单向拉伸试验,测试分析了该复合板的力学性能。结果表明钢丝一连续玄武岩纤维复合板具有较好的力学性能：当试样钢丝体积分数为20．6％时,其复合板弹性模量为99．8GPa,比纯CBF复合板试样提高12．9‰且抗拉强度也提高9．6％;同时成本降低35‰因此是一种高性价比的加固材料。     

连续玄武岩纤维在复合材料中应用

连续玄武岩纤维是绿色环保材料,是国家鼓励开发与应用的纤维材料.本文对玄武岩基本情况和连续玄武岩纤维制作等工艺的介绍,根据连续玄武岩纤维的特点,列举出玄武岩纤维长纤增强LFT、玄武岩直接无捻粗纱增强纤维和玄武岩纤维SMC无捻粗纱增强纤维的应用特点和情况,并对连续玄武岩纤维复合材料作了展望,期待有更大的应用范围.     

连续玄武岩纤维改性方法的研究

简介了连续玄武岩纤维的性能与应用,重点阐述了偶联剂处理法、酸碱处理法、表面涂层法和低温等离子处理法4种常用的对连续玄武岩纤维改性研究方法的研究情况。表明无论采用偶联剂、酸碱、表面涂层和低温等离子处理法,都能有效改善纤维的表面性能,提高纤维与其它材质间的粘接性。指出对连续玄武岩纤维界面性质的基础研究深度不够,是限制连续玄武岩纤维界面改性方法开发和完善的主要原因。     

芳纶／玻璃纤维混杂复合材料的电性能

本文主要研究芳纶纤维/玻璃纤维混杂复合材料在室温状态和湿态下的电性能变化以及混杂材料的机械性能。     

连续玄武岩纤维研究综述

介绍了连续玄武岩纤维的国内外发展现状、制备方法及应用状况,并对我国连续玄武岩纤维的发展提出了建议。     

高性能纤维的耐碱性能研究

研究了芳纶、玄武岩纤维以及玻璃纤维的耐碱性能,分析了3种纤维分别在65℃、80℃、95℃的氢氧化钠溶液中,经不同时间的腐蚀后,3种纤维的力学性能以及其质量的变化情况.结果表明:芳纶的耐碱性能最优,断裂强力和断裂伸长保持率最大,玄武岩纤维其次,玻璃纤维最差,因此芳纶比玄武岩纤维和玻璃纤维更适合用于碱性环境中.     

连续玄武岩纤维增强9518G树脂复合材料性能的研究

研究了连续玄武岩纤维增强9518G树脂复合材料的耐热性、力学性能和湿热对力学性能的影响,结果表明连续玄武岩纤维增强9518G树脂复合材料的玻璃化转变温度为199.11℃,具有较好耐热性;力学性能良好,与E玻璃布复合材料的力学性能相当;煮沸150 h后材料的力学性能最小保持率和最大吸水率分别为67.1%和0.35%。     

一种高模量系列玻璃纤维的耐酸性研究

简述了高模量玻璃纤维的优点和使用现状,介绍了耐酸性对高模量纤维的重要性。在给定的酸液浸蚀环境条件下,采用质量损失率分析和形貌分析,并对比普通E玻璃纤维和ECR玻璃纤维,本文对HM纤维的耐酸性进行测试和评价。研究结果表明:HM纤维的耐酸性大大优于普通E玻璃纤维,也更优于ECR玻璃纤维。     

湿热老化对杂环芳纶拉伸性能影响研究

为研究芳纶Ⅲ(杂环芳纶)与芳纶Ⅱ的力学性能差异,尤其是湿热老化后对拉伸强度的影响,进行了湿热老化实验。设置了在温度80℃和相对湿度85%条件下,对纤维材料老化2 500 h的实验要求,研究了Kevlar、Armos和F-12纤维的吸湿性能、拉伸强度、断裂延长率以及弹性模量随老化时间的变化情况。结果表明:经湿热老化实验后,3种芳纶的性能略均有所下降;F-12纤维综合性能优异。     

玄武岩纤维增强聚乳酸力学性能及耐老化性能

通过拉伸实验和老化实验，研究了玄武岩纤维含量对BF/PLA拉伸性能、抗冲击性能及耐老化性能的影响规律，通过DSC实验得到BF/PLA复合材料的结晶度，分析其耐老化原因。随着质量分数增加，其拉伸强度增加可达到141 MPa，弹性模量达到5 GPa，达到峰值后又减小。质量分数达到30%时，缺口冲击强度和非缺口冲击强度分别达到6.7 kJ/m²和20.76 kJ/m²。DSC实验结果表明，随着玄武岩纤维含量的增加，聚乳酸复合材料的结晶度由34.6%增加到54.6%，而结晶度的增加可以减缓聚乳酸的降解速度。当质量分数达到60%时，老化实验后的弹性模量可以保持降解前的77%，延缓降解速度较为明显。经分析，拉伸强度与玄武岩纤维质量分数呈二次多项式关系，而弹性模量与玄武岩纤维质量分数之间呈线性关系。这种函数关系不受材料力学性能下降的影响。     

纳米芳纶增强聚酰亚胺气凝胶纤维的制备及其性能研究

以3,3',4,4'-联苯四甲酸二酐和1,4-二氨基苯二胺共聚制备聚酰胺酸盐前驱体溶液,通过湿法纺丝,然后经过超临界二氧化碳干燥和热亚胺化处理制得纳米芳纶(ANFs)增强聚酰亚胺(PI)气凝胶纤维(简称PI/ANFs气凝胶纤维),研究了气凝胶纤维的结构与性能.结果表明:傅里叶变换红外光谱和X射线衍射光谱表征所制备的PI...     

国产芳纶纸蜂窝性能的研究

介绍了苏州芳磊蜂窝复合材料有限公司成功使用国产芳纶纸制造蜂窝的研发情况,并对国产芳纶纸蜂窝产品主要力学性能和物理参数进行了试验和分析。结果表明,国产的芳纶纸蜂窝主要力学性能与杜邦纸生产的相应规格的蜂窝性能基本一致。     

Effects of coupling agents on the properties of an NR/SBR matrix and its adhesion to continuous basalt fiber cords

The effects of various coupling agents on the characteristics and properties of a natural rubber (NR)/styrene–butadiene rubber (SBR) matrix and its adhesion to continuous basalt fiber (CBF) cords were studied. Four types of silane-based and two types of titanate-based coupling agents were added separately to the rubber matrix during the mixing process. The processability of the rubber compounds and the mechanical and tension fatigue properties of the vulcanizates were evaluated. The static and dynamic adhesion between the CBF cord/rubber matrices were investigated using the H pull-out test and an elastomer testing system, respectively. The results showed that the effects of the coupling agent were controlled by its chemical structure, and it was found that the addition of (3-aminopropyl)triethoxysilane was the most effective for enhancing the interfacial fatigue properties, due to the combined improvements of the initial adhesion, interfacial stress states, and the fatigue property of the rubber matrix. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47098.     

丁腈基聚氨酯/芳纶浆粕纤维复合材料的结构与性能

以端羟基聚丁二烯-丙烯腈、甲苯二异氰酸酯、扩链剂2,4/2,6-二氨基-3,5-二甲硫基甲苯为原料,芳纶浆粕纤维为填料制备丁腈基聚氨酯(PBA-PU)/芳纶浆粕纤维复合材料,并对其结构和性能进行了研究。结果表明,扫描电子显微镜显示芳纶浆粕纤维与PBA-PU基体结合得很好。随着芳纶浆粕纤维用量的增加,拉伸强度和撕裂强度先增大后降低,当其质量为0.5份左右(以预聚体为100份计)时,复合材料力学性能最佳;芳纶浆粕纤维的加入使PBA-PU复合材料的耐热性明显提高,而玻璃化转变温度下降,损耗因子降低。     

Mechanical properties and superstructure of isotactic polypropylene fibers prepared by continuous vibrating zone‐drawing

A continuous vibrating zone‐drawing (CVZD) was applied to study the effect of vibration on the mechanical properties and superstructure of isotactic polypropylene fibers. The CVZD treatment was a new drawing method by which the fiber was continuously drawn at a rate of 0.5 m/min under vibration using the specially designed apparatus. The CVZD treatment was carried out in five steps at a drawing temperature of 150°C and a frequency of 100 Hz, and applied tensions increased step by step with processing in the range of 14.8 to 207 MPa. The obtained fiber had a birefringence of 0.0373, crystallinity of 62.4%, tensile modulus of 17.6 GPa, and tensile strength of 1.11 GPa. These values are higher than those of the continuous zone‐drawn isotactic polypropylene fiber previous reported. The vibration added to the fibers during the zone‐drawing was effective in developing amorphous orientation and improving the mechanical properties. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 600–608, 2001     

YT822A型芳纶纸蜂窝性能研究

采用YT822A型芳纶纸和新型酚醛树脂制造了大尺寸蜂窝芯材,研究了YT822A型芳纶纸蜂窝的物理参数、力学性能及阻燃性能,并且与BMS 8-124AB规定的各项性能指标进行了比对。试验结果表明:YT822A型芳纶纸蜂窝芯材具有优异的综合性能,且各项参数和性能均能达到BMS 8-124AB的指标要求,为国产蜂窝芯材走向国际市场开拓了道路。     

Effects of silane coupling agents on internal reinforcement of wood by E-glass and basalt fibers

The internal reinforcement of Douglas-fir by glass or basalt fibers impregnated with resorcinol-phenol-formaldehyde or polymeric diphenylmethanediisocyanate bonding resins has been investigated. The objective was to evaluate the improvement in composite properties by the use of silane coupling agents. Fibers were treated with 3-(4-methoxyphenyl) propyl methyldichlorosilane for use with the phenolic resin, and with 3-aminopropyl triethoxysilane for use with the isocyanate resin. Resin impregnated fiber plies were sandwiched between wood pieces to prepare test specimens with 17 vol. % fiber for measurement of block shear strength, and modulus of rupture (MOR) and modulus of elasticity (MOE) in 3-point bending, and interlaminar shear strength in 5-point bending. The durability under wet conditions was evaluated by subjecting the specimens to an accelerated exposure test (ASTM D2559). It was found that silane application resulted in slight shear strength improvement under dry conditions but much higher increase in shear strength retention after exposure to moisture. Basalt fibers and E-glass fibers gave similar results and comparable properties.