In-situ Composite Based on Poly （ethylene terephthalate）,Polyamide and Polyethylene with Microfibres Formed through Extrusion and Hot Stretching
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2002年第5期
论文作者：ZhongmingLI MingboYANG RuiHUANG AiLU JianminFENG
文章页码：419 - 422
摘 要：<正>In-situ composites based on dispersed poly （ethylene terephthalate） （PET） or polyamide （PA）, and continuous polyethylene （PE） were prepared through a single screw extruder of Haake rheometer system with a rod-die relatively small in diameter. The extrudate was drawn at a drawing ratio of 3.1, and then quickly cooled in cold water. The specimens were obtained by injection molding at processing temperatures less than 190（C）, far below the melting temperature of PET （265（C）） and PA （230（C））, which can maintain the solid state of PET and PA microfiber phase in the composites. Morphological observation with scanning electron microscopy （SEM） indicated that PET and PA can more or less form in-situ microfibers at compositions studied （020 wt pct PET or PA）, and especially, PET and PA were almost deformed into fibers at the concentration of 15 wt pct. Tensile strength and modulus of the blends reinforced by PET or PA microfibers showed to be increased from the tensile test results. The most noticeable improveme
ZhongmingLI，MingboYANG，RuiHUANG，AiLU，JianminFENG
摘 要：<正>In-situ composites based on dispersed poly （ethylene terephthalate） （PET） or polyamide （PA）, and continuous polyethylene （PE） were prepared through a single screw extruder of Haake rheometer system with a rod-die relatively small in diameter. The extrudate was drawn at a drawing ratio of 3.1, and then quickly cooled in cold water. The specimens were obtained by injection molding at processing temperatures less than 190（C）, far below the melting temperature of PET （265（C）） and PA （230（C））, which can maintain the solid state of PET and PA microfiber phase in the composites. Morphological observation with scanning electron microscopy （SEM） indicated that PET and PA can more or less form in-situ microfibers at compositions studied （020 wt pct PET or PA）, and especially, PET and PA were almost deformed into fibers at the concentration of 15 wt pct. Tensile strength and modulus of the blends reinforced by PET or PA microfibers showed to be increased from the tensile test results. The most noticeable improveme
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