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Method for preparing chinlon 6 slices

A technology of slicing and nylon, applied in the field of preparation of nylon 6 slices, to achieve the effects of reduced strength drop, less yellowing and brittleness, good light resistance and heat resistance stability

Active Publication Date: 2015-07-22
FUJIAN JINGFENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been many introductions on the anti-ultraviolet finishing of cellulose fibers, protein fibers and polyester fibers by ultraviolet absorbers, but the application in polyamide fibers is rarely reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Dissolve 90 parts by weight of caprolactam in deionized water, add 0.5 parts by weight of dimethyl terephthalate and 0.1 parts by weight of 2,4,6-tris(2'n-butoxyphenyl)-1 , 3,5-triazine, mixed and stirred evenly;

[0017] 2. Add the uniformly stirred liquid into the reaction kettle, fill with nitrogen to replace the air, slowly heat to 220°C, react at a stirring speed of 100r / min for 5h, discharge the material and cool it in a water tank, and slice it to obtain polymerized slices;

[0018] 3. Extract the polymerized slices with hot water at 80°C for 30 hours, and dry the surface moisture with air at 50°C to obtain slices after extraction;

[0019] 4. Dry the slices after extraction at 100° C. for 7 hours in a vacuum drying oven to obtain nylon 6 slices.

Embodiment 2

[0021] 1. Dissolve 100 parts by weight of caprolactam in deionized water, add 3 parts by weight of dimethyl terephthalate and 0.5 parts by weight of light stabilizer 744, mix and stir evenly;

[0022] 2. Add the uniformly stirred liquid into the reaction kettle, fill with nitrogen to replace the air, slowly heat to 260°C, react at a stirring speed of 120r / min for 10h, discharge the material and slice it after cooling in a water tank to obtain polymerized slices;

[0023] 3. Extract the polymerized slices with hot water at 100°C for 30 hours, and dry the surface moisture with air at 50°C to obtain slices after extraction;

[0024] 4. Dry the slices after extraction at 120° C. for 9 hours in a vacuum drying oven to obtain nylon 6 slices.

Embodiment 3

[0026] 1. Dissolve 100 parts by weight of caprolactam in deionized water, add 1.0 parts by weight of dimethyl terephthalate and 0.2 parts by weight of UVP-327, mix and stir evenly;

[0027] 2. Add the uniformly stirred liquid into the reaction kettle, fill with nitrogen to replace the air, slowly heat to 260°C, react at a stirring speed of 120r / min for 10h, discharge the material and slice it after cooling in a water tank to obtain polymerized slices;

[0028] 3. Extract the polymerized slices with hot water at 100°C for 30 hours, and dry the surface moisture with air at 50°C to obtain slices after extraction;

[0029] 4. Dry the slices after extraction at 120° C. for 9 hours in a vacuum drying oven to obtain nylon 6 slices.

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PUM

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Abstract

The invention relates to a method for preparing chinlon 6 slices, which comprises the following steps: step 1, resolving 90 to 100 weight parts of caprolactam into liquid, adding 0.5 to 3 weight parts of initiating agents and 0.1 to 1.0 weight part of ultraviolet light absorber, and mixing and stirring uniformly; step 2, adding the uniformly stirred liquid into a reaction kettle, filling nitrogen to replace air, heating slowly till the temperature of the liquid is 220 to 260 DEG C, stirring for 5 to 10 hours at a 100 to 120 r / min stirring speed for reaction, discharging, slicing after material is cooled by a flume, obtaining aggregated slices; step 3, extracting the aggregated slices with 80 to 100 DEG C hot water for 30 hours, blowing surface moisture with 50 DEG C air, and obtaining extracted slices; step 4, drying the extracted slices with a vacuum drying oven for 7 to 9 hours at 100 to 120 DEG C, and obtaining the chinlon 6 slices.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing nylon 6 slices. Background technique [0002] Nylon fiber is widely used because of its high strength and good wear resistance. However, nylon macromolecules are sensitive to light and heat, and have poor light and heat resistance stability. They are prone to yellowing and brittleness during application, and dyed and printed fabrics are easy to fade, and their strength will drop significantly after a long period of use. Ultraviolet rays UV-A and UV-B have a serious impact on the degradation of textile fibers and dyes, so it is necessary to carry out UV protective finishing on nylon fibers. The anti-ultraviolet function of the fiber after finishing can slow down the aging speed of the fiber, improve the light fastness of the fiber, and at the same time achieve the purpose of protecting human skin. [0003] At present, the commonly used ultraviolet absorbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/16C08K5/3492D01F6/90D01F1/10
Inventor 陈万钟
Owner FUJIAN JINGFENG TECH