Study on surface etching of UHMPE fibers with pulsed radio-frequency glow discharge plasma

关键词：

pulsed radio-frequency plasma UHMPE fiber interfacial shear strength

类别：

纤维 >> 合成纤维

来源：

ICAFPM 2011

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pdf文件

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2677K

简介：

In this work, plasma generated by pulsed radio-frequency glow discharge at atmospheric pressure had been applied to modify the ultra-high-modulus polyethylene (UHMPE) fibers. The interfacial shear strength (IFSS) of plasma treated UHMPE with the matrix epoxy resin composite cured by triethylene tetramine was increased by 3.2 times with respect to the untreated ones for only 5 seconds treatment. The IFSS of the fiber with the matrix increased with the treatment time and reached the maximum at a moderate flow ratio of He/O2 (200:1). The surface of the treated samples was examined using scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR) and capillary tests. This simple, fast and environmental-friendly plasma modification method has great potential applications in improving the adhesion of high performance fibers with their resin matrix.

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epce

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2011-10-12 13:06:04

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cch62711127 2012-03-27 1:47:14
4 Conclusions Pulsed radio-frequency glow discharge plasma was used to enhance the adhesion of UHMPE with the matrix epoxy resin cured by triethylene tetramine and the following conclusions were obtained. The UHMPE fibers can achieve better modification effect at thumbnail time (5s). With the moderate flow ratio of He/O2 (200:1), the interfacial shear strength can be increased by 3.2 times and the tensile strength is only decreased by 1.45%. As shown in SEM, many micro-cracks were introduced on the treated sample surface. Oxygen-containing functional groups such as hydroxyl group and -COO groups centered at about 3410 and 1645cm?1 were also produced on the fiber surfaces. The polarizing groups and the featured micro-cracks on the fiber surface caused by the plasma treatment lead to the increase of wettability of the fiber surface so as to improve the surface adhesion properties. And this high efficient pulsed RF plasma treatment could have great application in scale up industry line.

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