Abstract
UHMWPE/C wraps yarn is fabricated by hollow spindle frame. Among them of ultra-high molecular weight polyethylene (UHMWPE) filament which adopts Holland DSM Dyneema company product SK65 was treated as core filament and cotton yam which is made in Taiwan factory was treated as sheath yam is accomplished. This experiment, in order to reach the application for tactics dress, must control 250 denier of yam count, 11% of evenness (U%) and 7~10 g/d of tenacity of UHMWPE/C wraps yarn, UHMWPE/C wraps yarn would be also wanted the color that can be easy to dye of all kinds and have suitable comfortableness. Those properties of tensile strain, tensile tenacity, yam count, evenness, moisture content, twist angle and cover rate of UHMWPE/C wraps are important properties for comfortableness of tactics dress, therefore those properties of VHMWPE/C wraps yarn should be investigated through this experiment. Whereas properties of tensile load, tensile strain and tensile tenacity should be tested by tensile testing machine, yam count and moisture content should be experimented by accurate balance, oven and calculation of formula, for yam qualities of evenness (U%) would be measured by uster testing instrument, while the properties of twisting angle. cover rate, color change and touch of yam surface should be observed by optical microscope, scanning electronic microscope cooperates with Pierce theory operation. Afterward, the cotton yarn count and the degree of twist number were chose as the experiment's parameters in this study. The region of cotton yam count was chose from 20 'S to 50 'S and degree of twist number was chose from 700TPM to 1000TPM (twist per meter). The results of UHMWPE/C wraps cover yam by experiment indicated that the tenacity and yarn count of UHMWPE/C wrap yarn for army tactics dresses request must reach more than 7~10g/d and less than 250D respectively, hence we shall choice above 30's of cotton yam count and 700~1000TPM degree of twist number while 50's of cotton yam count and 700TPM degree of twist number are the best choose for request yam count of weaving and manufacture performance. But we consider the comfortable properties of UHMWPE/C wraps yam for tactics dress, adapt 1000TPM degree of yam count is better. After all, UHMWPE by it wrap round cotton yam behind can ameliorate properties of UHMWPE filament yarn have: Summary, the properties of UHMWPE filament is improved by it wrap cotton yam behind have: 1. ameliorated dying of yam in which would promote changeable color. 2. Tensile extension of yarn can be increased from 3.5% to 12~17%. 3. Moisture content of yam can be increased from 0% to 4~5%. 4. Roughness on the surface of yarn is increased which would improve to weaving. From above mentioned results show that UHMWPE/C warps yam has good dye ability and comfortable properties which can adapt to tactics dress apply to.
Published Version
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