Polyurethane fiber uniformity
作者： Richard L. Ballman , Kenneth R. Lea , Walter J. Nunning , John H. Southern
DOI:
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摘要: A particular elastomeric polyurethane polymer is heated to about 225°C. ensure complete melting prior extrusion side-by-side with a molten hard polymer. The made from an aromatic diisocyanate, high molecular weight (800-3000) diol and low (500 or less) diol, combined in specific ratio ranges.
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