A kind of preparation method and product of durable high-efficiency antibacterial nylon 6 fiber

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

Active Publication Date: 2022-03-25
POLY PLASTIC MASTERBATCH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the essence of endowing nylon 6 fiber with antibacterial properties is to introduce the antibacterial agent into the fiber through in-situ addition or surface coating. However, the in-situ addition of antibacterial agent is distributed throughout the nylon 6 fiber, resulting in low utilization efficiency of the antibacterial agent At the same time, the amount of antibacterial agent added should not be too much, otherwise it will affect the spinning and forming, and since the processing of nylon 6 fiber usually adopts melt forming, the added antibacterial agent needs to have good thermal stability, so the type of antibacterial agent added is limited. Usually an inorganic antimicrobial, further limiting its application
[0004] The method of surface coating imparts antibacterial properties to nylon 6 fibers, because of the combination of antibacterial agents or coatings and fibers mainly due to physical forces, which have disadvantages such as poor durability and poor washing resistance; But the current surface grafting is mainly achieved by irradiation grafting. However, nylon 6 has poor radiation resistance, and irradiation treatment will damage the structure of nylon 6 fibers, which will further affect the feel and mechanical properties of nylon 6 fibers. , affecting the long-term application of nylon 6 fiber

Method used

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  • A kind of preparation method and product of durable high-efficiency antibacterial nylon 6 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 high-efficiency antibacterial nylon 6 fiber and its products. By adding modified monomers in the polymerization process of caprolactam, the modified monomers are copolymerized into molecular chains, and polarity is introduced into the side chains of molecular chains. Short chain, the modified nylon 6 fiber is obtained by melt spinning. During the spinning process, the antibacterial agent is added to the oil agent, so that the fiber absorbs the antibacterial agent in the oiling stage, and then through the heat treatment stage, the antibacterial agent and the molecule The polar short chains on the chain form a strong combination of ionic bonds or chemical bonds to obtain nylon 6 fibers with long-lasting and high-efficiency antibacterial properties. The antibacterial nylon 6 fiber of the present invention has the characteristics of high efficiency, broad spectrum, safety and long-lasting antibacterial, its antibacterial rate reaches more than 95%, and the antibacterial performance does not decrease after washing for more than 50 times, and the utilization efficiency of antibacterial agents is high, which significantly improves the wearing of nylon 6 fiber It is safe and can be widely used in the field of home furnishing and clothing textiles.

Description

technical field [0001] The invention belongs to the technical field of polyamide preparation, and in particular relates to a preparation method of durable and high-efficiency antibacterial nylon 6 fiber and a product thereof. Background technique [0002] Antibacterial treatment of nylon 6 fibers, that is, through physical or chemical modification methods, changing the components or molecular structure of fibers, etc., to make nylon 6 fibers with antibacterial properties. Antibacterial nylon 6 fiber has good inhibitory and killing effects on bacteria, fungi and other microorganisms, and can be used in clothing and apparel, especially footwear and underwear that are prone to bacteria. With the improvement of people's living standards, it has become an important research direction to endow nylon 6 fibers and their products with health care functions, and to develop high-efficiency, broad-spectrum, safe, and durable antibacterial nylon 6 fibers. [0003] At present, the essenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/432D06M13/46D06M15/03D01F6/80C08G69/36D06M101/34
CPCD06M13/46D06M15/03D06M13/432D06M16/00D01F6/80C08G69/36D06M2101/34
Inventor 吉鹏王华平王朝生徐毅明徐虎明谢伟
Owner POLY PLASTIC MASTERBATCH SUZHOU
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