共查询到17条相似文献,搜索用时 62 毫秒
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低温等离子体处理是实现工业和获得更好的等离子体表面改性的新方法。介绍了低温等离子体的产生,作用机理,及低温等离子体技术在化工中的应用及发展前景。 相似文献
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介绍低温等离子体在聚合物材料表面改性领域的应用,概述了低温等离子体获得方式及其对塑料聚合物表面改性的原理。以低温等离子体对塑料表面亲水性(疏水性)、黏合性以及生物相容性等为例介绍其具体应用,并对应用现状进行了分析。 相似文献
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唐久英 《高科技纤维与应用》2006,31(5):31-36
介绍了低温等离子体的概念、分类及其在超高相对分子质量聚乙烯纤维(UHMWP E)表面改性方面的特点;阐述了国内外在低温等离子体对UHMWPE纤维表面改性前后纤维本身及其复合材料性能的影响情况;简介了用自行研制的低温等离子体设备对UHMWPE纤维进行表面改性的研究结果和低温等离子体处理UHMWPE纤维表面改性的发展前景。实验表明,UHMWPE纤维经过等离子体处理后表面产生刻蚀和交联,其与树脂间的粘结性能改善;该低温等离子体设备能满足UHMWPE纤维表面改性连续化生产需要。 相似文献
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TiN films were deposited with remote plasma metal organic chemical vapor deposition (MOCVD) from tetrakis-diethyl-amido-titanium
(TDEAT) at substrate temperature of 250–500°C and plasma power of 20–80 W. The growth rate using N2 plasma is slower than that with H2 plasma and showed 9.33 kcal/mol of activation energy. In the range of 350–400°C., higher crystallinity and surface roughness
were observed and resistivity was relatively low. As the temperature increased to 500°C., randomely oriented structure and
smooth surface with higher resistivity were obtained. At low deposition temperature, carbon was incorporated as TiC phase,
as the deposition temperature increases, carbon was found as hydrocarbon. At 40 W of plasma power, higher crystallinity and
rough surface with lower resistivity were obtained and increasing the plasma power to 80 W leads to low crystallinity, smooth
surface and higher resistivity. It may be due to the incorporation of hydrocarbon decomposed in the gas phase. Surface roughness
was found to be related to the crystallinity of the film. 相似文献
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利用等离子体处理技术对PE-WPC进行表面处理以改善其胶接性能,将处理后的木塑复合材料分别贮存在真空(室温)、空气(室温)和空气(低温)环境中,利用XPS分析手段,研究了等离子体处理PE-WPC表面元素的变化,以此表征贮存环境对等离子体处理表面时效性的影响。结果表明,随着放置时间的延长,贮存于真空、空气(室温)和低温环境中的等离子体处理PE-WPC表面的C元素相对含量均增加,O元素则相反,O/C值降低。与空气(室温)环境相比,真空和低温环境下等离子体处理PE-WPC表面O/C值降低的幅度减缓。 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
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利用等离子体处理技术对聚乙烯木塑复合材料(PE-WPC)进行表面处理以改善其胶接性能,将处理后的WPC分别贮存在真空(室温)、空气(室温)和空气(低温)环境中,利用接触角、FT-IR和胶接强度测试等手段,研究了不同贮存环境对等离子体处理后材料表面时效性的影响。接触角测试结果表明,随着放置时间的延长,贮存在3种环境中的试样的表面接触角均逐渐增大,相比之下,处于真空和低温环境中的试样接触角变化较小;红外光谱分析表明,贮存于3种环境中的试样表面的-OH基团随着放置时间的延长几乎消失,-C-O和C=O基团也逐渐减少,处于真空和低温环境中的试样表面残留的极性基团较空气中的试样多。胶接强度测试结果表明,随着放置时间的延长,放置在3种环境中的试样表面粘接强度逐渐降低,其中放置于空气(室温)中的试样的粘接强度降低的幅度最大。等离子体处理尽管存在时效性,但贮存30d的试样的胶接性能仍优于未处理的试样。 相似文献
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介绍了低温等离子体对纤维表面改性的机理,以及4种高性能纤维经低温等离子体改性后性能的变化与分析。结果表明:改性后的纤维内部没有发生变化,纤维表面的摩擦系数增大、润湿性增强、粘结性也得到一定改善。 相似文献
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采用空气低温等离子体处理高强聚乙烯纤维,测试处理前后纤维表面摩擦系数的变化,并采用电子扫描显微镜(SEM)和原子力显微镜(AFM)对纤维表面形貌进行观察分析。结果发现,空气低温等离子体处理的刻蚀作用会在纤维表面形成致密的"小坑群",使得纤维表面产生剥落、联结,造成纤维表面的粗糙程度有所增加,其处理后的纤维表面静、动摩擦系数有所提高。 相似文献