共查询到18条相似文献,搜索用时 171 毫秒
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PBO纤维界面改性研究 总被引:1,自引:1,他引:0
介绍了聚对苯撑苯并双噁唑(PBO)单体的盐酸盐合成及其优缺点;阐述了PBO的对苯二甲酸法、对苯二甲酞氯法、三甲基硅烷基化法、五氧化二磷调节法及预聚合法的合成方法及其优缺点;简述了PBO的纺丝方法。分析了PBO纤维的物理化学性能,对其各项性能做了比较;论述了PBO纤维界面改性界面理论及改性处理方法。指出PBO纤维的综合性能优异,应加大PBO规模的生产方法和界面改性研究,实现PBO纤维的规模化生产。 相似文献
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《合成纤维工业》2017,(3):56-62
详细介绍了聚苯并双噁唑(PBO)的合成方法、PBO纤维的制备方法、PBO纤维的改性方法以及PBO纤维的主要应用领域,并对我国PBO纤维的研究开发及应用提出了建议。PBO的合成方法主要有对苯二甲酸法、对苯二甲酰氯法、三甲基硅烷基化法、对苯二甲酸盐法、对羟基苯甲酸酯法;PBO纤维的制备主要有液晶纺丝法和静电纺丝法;PBO纤维的改性方法主要有化学处理法、共聚处理法、偶联剂处理法、等离子体处理法及辐射处理法;PBO纤维主要应用于耐热性能材料及力学增强材料。我国PBO纤维的研究开发应注重产学研结合,从提高单体4,6-二氨基间苯二酚的纯度及PBO的特性黏数,优化单体合成、聚合及纺丝技术等环节着手,促进PBO纤维的产业化。 相似文献
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PBO纤维表面改性新进展 总被引:4,自引:2,他引:2
本文介绍了聚对苯撑苯并双噁唑(PBO)纤维的结构和性能,综述了目前国内外文献报道的PBO纤维酸处理法、偶联剂处理、等离子体处理、辐射处理等表面改性技术及其研究进展。 相似文献
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采用低温等离子体技术处理聚对苯撑苯并双噁唑(PBO)纤维,并设计正交实验和剥离实验,通过测试改性前后PBO纤维与聚四氟乙烯(PTFE)膜之间的剥离强力和剥离功来反映粘结牢度,并验证了改性后PBO纤维粘着性的改善。研究发现:在实验条件下,改性后的PBO纤维与聚四氟乙烯膜之间的剥离强力和剥离功最大可提高58.7%和52.7%,粘结牢度增强,粘着性改善;并通过扫描电镜也观察到改性后PBO纤维粗糙程度增加,同时预测了表面粗糙程度与粘着性有一定的联系。 相似文献
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Zhong Xie Xiaoyun Liu Qixin Zhuang Yi Chen Xiaoyang Mao Zhewen Han 《Polymer Composites》2012,33(8):1295-1301
This article focused on the synthesis of poly(p‐phenylene benzobisoxazole)/carboxylic multiwalled carbon nanotubes (PBO/MWNT‐COOH) composites through in situ polymerization. The effect of MWNT‐COOH on thermal stability and photophysical properties was investigated thoroughly. Especially an in‐depth study was carried out on the detailed process of energy transfer. Ultraviolet‐visible‐near infrared and fluorescence spectroscopy of composites revealed that MWNT interacted with PBO through strong covalent bonds, which was a significant photoinduced charge‐transfer interaction between the two components. Therefore, compared with PBO, both the thermal stability and PL quantum efficiency of PBO/MWNT‐COOH composites were improved. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers 相似文献
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Chunhua Zhang Huifang Xu Zaixing Jiang Fenglei Zhu Yudong Huang 《Polymer Composites》2012,33(6):927-932
To improve the interfacial performance of poly[p‐phenylene benzobisoxazole] (PBO) fiber and epoxy resin, a modified multiwalled carbon nanotubes (MWCNTs‐Ecp) were used to achieve this purpose through grafting onto PBO fiber surface using a gamma ray radiation method. Experimental results indicated that the equilibrium wetting rate and equilibrium adsorption amount of the modified PBO fiber for epoxy resin and acetone were all higher than that of as received PBO fiber. The interfacial shear strength (IFSS) of single fiber composite increased from 31.4 to 77.5 MPa after modification. The fracture models of composites are changed from pure interfacial failure to combination failure of interface and resin interlayer. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers 相似文献
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Influence of the coupling agent on the mechanical properties of SiCf/poly(phenylene benzobisoxazole) composites 下载免费PDF全文
Poly(phenylene benzobisoxazole) (PBO) was first used as matrix to fabricate the two‐dimensional SiCf/PBO composites by a lamination method. Different amounts of coupling agent were introduced to improve the bonding between silicon carbide (SiC) fibers and the PBO matrix during the fabrication of the SiCf/PBO composites. The surface structure and composition of the as‐received PBO and PBO treated with the coupling agent were analyzed, and the morphology and flexural strength of the composites were characterized. The Fourier transform infrared analysis indicated that the hydroxyl groups from the coupling agent were successfully introduced to PBO. The flexural strength of the composites increased at first with increasing content of the coupling agent but decreased with excessive addition of the coupling agent. The flexural strength of the composites was improved from 15 to 89 MPa. The test results suggested that the interaction between the SiC fiber and the treated PBO with the coupling agent was intensified. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 39805. 相似文献
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PBO超级纤维研究进展及其表面处理 总被引:24,自引:0,他引:24
黄玉东 《高科技纤维与应用》2001,28(1):11-16
介绍了PBO(聚苯撑苯并二恶唑)超级纤维的制备,其结构、性能以及应用等方面的研究进展,并结合PBO纤维的特点,评述了PBO纤维表面处理的研究概况。 相似文献