共查询到19条相似文献,搜索用时 125 毫秒
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本文分析了塑料包装材料印刷、粘接困难的原因、介绍了两种表面处理改性方法,即电晕处理和火焰处理,并对这两种方法处理效果的影响因素进行了讨论,指出了提高表面处理改性质量的主要因素。 相似文献
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植物纤维/生物降解塑料复合材料的纤维表面改性研究 总被引:1,自引:0,他引:1
冯彦洪;张叶青;瞿金平;何和智 《中国塑料》2011,25(10):50-54
综述了植物纤维表面改性的主要方法及特点,其中物理改性包括热处理、静放电处理、蒸汽爆破处理等,化学法改性包括表面接枝法、表面活性剂法、碱处理法、酯化处理法、界面偶联剂法等。最后,讨论了纤维表面改性的发展趋势和研究方向,指出蒸汽爆破处理和低温等离子体处理是未来很有前景的纤维表面改性方法。 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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以1 W功率的Ar等离子体对聚丙烯(PP)多孔膜作了表面处理,通过失量法和扫描电镜(SEM)法研究了等离子体的气氛压力和处理时间的表面刻蚀作用,并以水通量法评价了PP膜多孔隙内部的改性状况。结果表明,表面刻蚀作用随着等离子体气氛压力的降低及处理时间的延长而增强。中等气氛压力(18 Pa或30 Pa)的等离子体处理可使PP膜均匀通水,表明具有适中能量水平以及活性粒子密度的等离子体气氛是实现多孔膜多孔隙内部均匀改性的重要因素。为实现PP膜多孔隙内部的均匀处理同时降低表面刻蚀作用,10min、18Pa的等离子体处理条件较为合适。处理表面产生的羧基改善了表面亲水性,但表面接触角在5 d内由44.2°急剧上升到了66.0°,之后1 a内变化平稳。 相似文献
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综述激光表面改性在各种表面处理技术方面的应用情况,列举了激光表面改性处理的机理和工艺及其效果。 相似文献
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综述了近年来膨胀型阻燃剂的研究现状,包括混合型膨胀型阻燃剂和单组分膨胀型阻燃剂。简要概述了膨胀型阻燃剂的阻燃机理,分析了其存在的不足,指出了其发展趋势。 相似文献
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常压等离子射流表面改性超高模量聚乙烯纤维 总被引:1,自引:1,他引:0
利用常压等离子射流(APPJ)方法对超高模量聚乙烯(UHMPE)纤维进行表面改性处理。研究了处理前后UHMPE纤维的力学性能、表面形貌、化学成分、表面粘结性能的变化。结果表明,常压等离子射流处理后,UHMPE纤维的强度未发生显著变化,纤维表面粗糙度增加,表面氧元素的含量增加,表面极性基团增加,纤维与环氧树脂之间的粘结性能得到显著的改善。 相似文献
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采用硅烷偶联剂KH-550、高温氧化和超声波+偶联剂复合方法(简称超声复合方法)分别对碳纤维(CF)进行表面处理,制备不同表面处理的CF改性热塑性聚酰亚胺(PI)复合材料,研究表面处理CF对CF/PI复合材料力学和摩擦磨损性能的影响,利用扫描电子显微镜对PI复合材料磨损表面进行观察。结果表明:与纯PI相比,CF的加入提高了PI复合材料的机械性能,经超声复合处理的CF的增强效果较好;磨损表面表明:超声复合处理CF改性PI复合材料磨损表面的犁沟和磨屑较少,且平整。 相似文献
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Unoriented (UPP) and biaxially oriented (BOPP) polypropylene films were treated under radio frequency plasma of air, nitrogen, oxygen, and ammonia. Surface modification of polypropylene films was investigated by using surface energy measurement and attenuated total reflection (ATR)‐FTIR spectroscopy. Surface energy of air and nitrogen plasma‐treated polypropylene film increased for shorter treatment time and then decreased and attained an equilibrium value. Such changes in surface energy were not observed for oxygen and ammonia plasma‐treated polypropylene film, which increased to an equilibrium value. ATR‐FTIR studies revealed characteristic differences in the absorption spectra for short‐duration and long‐duration treatments. From the relative intensity change in the C—H stretching vibration, the mechanism of surface chemical reaction could be inferred. Studies regarding the durability of surface modification due to plasma treatment were evaluated by investigating surface energy of samples aged for 2 months. Treated films subjected to peel strength measurement showed improvement in bondability for UPP and BOPP film by hydrophilic surface modification accompanied by surface crosslinking. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 925–936, 2002 相似文献
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Argon low‐temperature plasma modification of chopped aramid fiber and its effect on paper performance of aramid sheets
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Chopped aramid fiber was modified by an argon low‐temperature plasma treatment to enhance the interfacial strength of aramid paper. The water contact angle of the aramid fiber and the tensile strength, tearing strength, and evenness of the aramid sheets were investigated under different conditions, and the parameters of the argon low‐temperature plasma modification, like gas pressure, discharge power, and discharge time, were optimized. The chemical structure and surface morphology of the fiber after plasma modification were characterized by X‐ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. The strengthening mechanism of aramid paper by low‐temperature plasma modification was also studied. It was found that the argon low‐temperature plasma treatment introduced some new polar groups onto the fiber surface and increased the fiber surface wettability and roughness. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 45215. 相似文献