| Because the acrylic fabrics tend to fuzz and pill, the structures of acrylic fibersand its characteristics of fuzzing and pilling performance were discussed in thispaper. The mechanical properties and the fuzzing and pilling performance of acrylicfibers and cotton were analyzed to seek the methods of lowering the strength ofacrylic fiber and to improve anti-pilling performance of acrylic fabrics. Theanti-pilling acrylic fiber that was modified by alkali de-weighting to lower itsstrength was developed. To optimize the hydrolyzed experimental conditions, L9(3~3)orthogonal design and range analysis method were chosen in this paper. Themicrostructures about acrylic fibers were analyzed by means of advanced testingmethods. The characteristics of cotton yarns, acrylic yarns and modified acrylicyarns were tested and analyzed. Cotton fabrics, acrylic fabrics and modified acrylicfabrics were tested and analyzed about pilling and fuzzing performance andassociated mechanical properties, wearabilities and bending properties. The resultsshow that the anti-pilling tendency of modified acrylic fabrics is improved. Thefactors which influence the pilling property of modified acrylic fabrics according totheir impact orders are as follows: concentration, temperature, time. The best levelsof the orthogonal design are 70℃, 4% of sodium hydroxide concentration and 6minutes of treatment. Under microscope the tiny cracks appears in the surface ofacrylic fibers. The weight of the acrylic fibers is reduced after processing. Thestrength and the abrasion resistance of acrylic yarns and the fabrics are lowered. Thewater absorbability, the draping property and the crease resistance of their fabricsare enhanced and warmth retention property has no obvious changes. So it is easyand feasible to enhance the anti-pilling performance well by means of alkalide-weighting without destroying the other performances of acrylic fabrics. |
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