Heat-storage warm-keeping chinlon 6 short fiber and preparation method thereof

Abstract

The invention relates to a heat-storage warm-keeping chinlon 6 short fiber and a preparation method thereof. The method includes: spinning a heat-storage warm-keeping chinlon 6 melt to prepare a heat-storage warm-keeping chinlon 6 short fiber, wherein the chinlon 6 is prepared from a mixture of caprolactam, a heat-storage powder coated with a catalyst, and water, and successively through a heat-storage powder surface chain growth reaction, a ring-opening pre-polycondensation reaction and a final-polycondensation reaction; wherein the heat-storage powder surface chain growth reaction is a reaction that the caprolactam on the surface of the heat-storage powder is polymerized to form a linear molecular chain under effect of the catalyst. A fabric, being 200-250 g / m<2> in gram weight and prepared from the fiber, is not less than 0.944 m<2>*K / W in thermal resistance, not less than 6.09 in Clo value, not less than 91.4% in warm-keeping rate, not less than 0.90 in far-infrared emissivity andnot less than 1.5 DEG C in far-infrared radiation temperature increasing value. The heat-storage warm-keeping chinlon 6 short fiber has good dispersion uniformity of the heat-storage powder and has excellent heat-storage and warm-keeping function.

Description

technical field [0001] The invention belongs to the field of nylon preparation, and relates to a thermal storage and heat preservation nylon 6 short fiber and a preparation method thereof. Background technique [0002] Nylon 6 staple fiber, also known as nylon 6 or nylon 6, is one of the main varieties of synthetic fibers. Its molecular structure is regularly arranged and many hydrogen bonds are formed between macromolecules, which makes nylon 6 staple fiber have high strength, good resilience, and durability. It is widely used in the fields of clothing or home textiles due to its excellent abrasiveness and strong moisture absorption capacity. As one of the main raw materials of clothing textiles, how to improve the warmth retention of nylon 6 staple fiber is a problem that people and researchers pay more attention to. [0003] At present, there are many types of thermal fibers on the market. The thermal fibers on the market mainly achieve the effect of heating and keeping ...

AI Technical Summary

Problems solved by technology

For example, the Chinese patent application number 20111038048.4 discloses a manufacturing method of polyester hollow micro-denier fiber, which increases the amount of static air in the fiber by increasing the hollowness of the fiber, improves the thermal resistance, and achieves the effect of keeping warm, but with extrusion With the increase of washing times, the hollow fiber deforms and gradually loses its heat preservation effect; the Chinese patent application number 20111009869.3 discloses a hygroscopic heating fiber and its preparation method, which improves the water absorption rate of the fiber by introducing water-absorbing groups, thereby absorbing human body evaporation The water vapor converts kinetic energy into heat energy to keep warm; the Chinese patent application number CN20171024165.6 discloses a far-infrared polyester fiber. By adding nano-powder, the fiber can absorb the infrared rays radiated by the human body and emit infrared rays to the human body. Radiation of far-infrared rays achieves the effect of keeping warm and health care

Although the above patents have improved the warmth retention of fibers or fabrics, there are problems such as single function, poor durability, narrow heat source, low calorific value, and poor powder dispersibility, and as the amount of powder added increases, the fluidity of the melt decreases. poor processability

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