Old woolen yarn fast recycling method
A kind of wool, fast technology, applied in the direction of dyeing method, improved hand fiber, textile and papermaking, etc., can solve the problems of sticking various bacteria, dye stains, failing to meet the technical requirements of the textile industry, and not meeting the requirements of green environmental protection. , to achieve better thermal insulation effect, realize the transformation and utilization of waste, and improve the resilience and thermal insulation effect.
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them.
[0027] A kind of fast recycling method for old wool, comprising the following steps:
[0028] 1) Alkali swelling: Weigh 100kg of old woolen fabric, put it into 1000L of 18% sodium hydroxide aqueous solution, stir at a low speed of 1.5r / min, continue to add ice cubes, keep stirring in the ice bath at 0°C for 15min, then slowly Add 50L of ethanol dropwise until the old woolen fabric is fully swollen. Compared with the dry old woolen yarn, the woolen volume swells to about 1.5 times its original volume before adding ethanol. There is about axial shrinkage (5%), the analysis mechanism may be as follows:
[0029] The main material of wool is cellulose, and there are many hydroxyl groups in its molecular chain. When it encounters strong alkali,...
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