Preparation method of durable and efficient antibacterial nylon 6 fiber and product prepared from fiber

A fiber and nylon technology, which is applied in the field of long-lasting and efficient antibacterial nylon 6 fiber preparation, can solve the problems that affect the hand feel and mechanical properties of nylon 6 fiber, affect the long-term application of nylon 6 fiber, and the amount of antibacterial agent should not be too much, so as to achieve improvement The effect of forming stability, improving utilization efficiency, and excellent comprehensive performance

Active Publication Date: 2021-12-17
POLY PLASTIC MASTERBATCH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better control over the properties of polymyarn (nylon) filaments during manufacturing compared to traditional methods such as spinning and extrusion processes. It also enhances its overall effectiveness due to improved binding between different components within each layer of the yarn itself. Additionally, this new technique does away with any harmful substance like formaldehyde found at levels above certain limits while still maintaining good mechanical strength and resistance against corrosion caused by various environments. Overall, these technical improvements make the resulting product more reliable and long-lasting than current products made from other materials.

Problems solved by technology

This patents discusses how adding certain types of substances (antimicrobial) onto nylons makes them resistant against harmful organism like germs but also increases their effectiveness for prevention purposes. Existing techniques involve modifying these materials during production processes without considering any potential benefits from this modifications.

Method used

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  • Preparation method of durable and efficient antibacterial nylon 6 fiber and product prepared from fiber

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Experimental program
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Effect test

Embodiment 1

[0039] This embodiment provides a kind of preparation method of durable high-efficiency antibacterial nylon 6 fiber, the steps are:

[0040] (1) Dissolve butane-1,1,4-tricarboxylic acid and butanediamine in water to prepare a 50wt% solution. After stirring at 70°C for 70 minutes, the resulting mixed solution is cooled and allowed to stand to precipitate crystals ( The cooling temperature is 35°C, and the standing time is 3 hours), filtered, washed and dried to obtain the modified salt, and the molar ratio of amine group to carboxyl group is 1.001:1;

[0041](2) After mixing caprolactam, water, and 4-amino-2,2,6,6-tetramethylpiperidine uniformly, the raw materials for the ring-opening reaction were prepared, and the ring-opening reaction was used to obtain the nylon 6 prepolymer; among them, water was added The amount is 0.5wt% relative to the mass of caprolactam; the amount of 4-amino-2,2,6,6-tetramethylpiperidine added is 0.2% relative to the mass of caprolactam, and the ring...

Embodiment 2

[0047] This embodiment provides a kind of preparation method of durable high-efficiency antibacterial nylon 6 fiber, the steps are:

[0048] (1) Dissolve butane-1,1,4,4-tetracarboxylic acid and butanediamine in alcohol to prepare a 65wt% solution. After stirring at 60°C for 100 minutes, cool the resulting mixed solution and let it stand Precipitate crystals (cooling temperature is 5°C, standing time is 3 hours), filter, wash and dry the obtained crystals to obtain modified salt, the molar ratio of amine group to carboxyl group is 1.0005:1;

[0049] (2) After mixing caprolactam, water, and bis(2,2,6,6-tetramethyl-3-piperidinylamino)-isophthalamide evenly, the raw material for the ring-opening reaction was prepared, and the ring-opening reaction obtained Nylon 6 prepolymer; Wherein, water addition is 2wt% relative to caprolactam mass; Two (2,2,6,6-tetramethyl-3-piperidinyl amino)-isophthalamide addition is Relative to 0.4% of the mass of caprolactam, the ring-opening reaction t...

Embodiment 3

[0055] This embodiment provides a kind of preparation method of durable high-efficiency antibacterial nylon 6 fiber, the steps are:

[0056] (1) Dissolve 2-hydroxysuccinic acid and butanediamine in methanol to prepare a 70wt% solution. After stirring at 55°C for 100 minutes, cool the resulting mixed solution to precipitate crystals (cooling temperature is 4°C , the standing time is 5 hours), filtered, and the obtained crystals were washed and dried to obtain the modified salt, and the molar ratio of amine group to carboxyl group was 1.002:1;

[0057] (2) After uniformly mixing caprolactam, water, and antioxidant 1010, the ring-opening reaction raw material is obtained, and the ring-opening reaction is used to obtain a nylon 6 prepolymer; wherein, the amount of water added is 1wt% relative to the mass of caprolactam; the antioxidant The amount of 1010 added is 0.3% relative to the mass of caprolactam, the ring-opening reaction temperature is 245°C, the pressure is 0.38MPa, and ...

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Abstract

The invention discloses a preparation method of durable and efficient antibacterial nylon 6 fiber and a product prepared from the fiber. Modified nylon 6 fiber is obtained by adding a modified monomer in a caprolactam polymerization process, copolymerizing the modified monomer into a molecular chain, introducing a polar short chain into a side chain of the molecular chain, and carrying out melt spinning; in the spinning process, an antibacterial agent is added into an oiling agent, so that the fiber adsorbs the antibacterial agent in an oiling stage; and then through a heat treatment stage, the antibacterial agent and the polar short chain on the molecular chain form a strong combination form of ionic bonds or chemical bonds, and the durable and efficient antibacterial nylon 6 fiber is obtained. The antibacterial nylon 6 fiber disclosed by the invention has the characteristics of high efficiency, broad spectrum, safety and lasting antibacterial property, the antibacterial rate of the antibacterial nylon 6 fiber reaches 95% or above, the antibacterial property is not reduced after the antibacterial nylon 6 fiber is washed with water for 50 times or above, the utilization efficiency of the antibacterial agent is high, the wearing safety of the nylon 6 fiber is remarkably improved, and the antibacterial nylon 6 fiber can be widely applied to the fields of home and clothing textiles.

Description

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Claims

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Application Information

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Owner POLY PLASTIC MASTERBATCH SUZHOU
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