Marine recycled fabric and preparation method thereof

A kind of fabric and marine technology, which is applied in the field of marine recycled fabrics and its preparation, can solve the problems of large color differences between different batches, unstable coloring rate, and difficult recycling, so as to save raw materials, improve softness, and slow down pollution problems Effect

Pending Publication Date: 2022-03-25
NINGBO DAQIAN TEXTILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention aims to propose a marine recycled polyester fabric and its preparation method to solve the problem that the ocean recycled polyester fabric in the prior art is difficult to recycle, the efficiency is not high, and the color difference between different batches is large, and the color uptake rate is unstable. The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Marine recycled fabric and preparation method thereof
  • Marine recycled fabric and preparation method thereof

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preparation example Construction

[0026] The present invention provides a marine recycled fabric and a preparation method thereof, which are used to convert recycled marine waste plastic products into textile raw materials, which mainly include the following steps:

[0027] (1) Material pretreatment: Sorting, decontamination and crushing of waste marine plastics to obtain waste polyester raw materials;

[0028] Among them, when sorting marine plastics, firstly distinguish different plastic products according to their colors, remove the labels and perform preliminary cleaning on them, and then send them to the crusher for crushing to obtain waste plastic sheet structures;

[0029] Cleaning again: Put the broken waste polyester material into a sander with spray equipment for friction decontamination, transport it to a cooking pot, heat it to close to 100°C by steam, cook it for 30-60 minutes, and then pass it through the discharge machine The equipment washes the waste polyester fragments after cooking with clea...

Embodiment 1

[0043] This embodiment provides a marine recycling fabric, the preparation method of which mainly includes the following steps:

[0044] Material pretreatment: distinguish different plastic products according to the color, remove the label and perform preliminary cleaning on them, then send them to the crusher for crushing to obtain the waste plastic sheet structure; put the crushed waste polyester materials into the belt Friction and decontamination in a sanding machine with spray equipment, transported to a cooking pot, heated to close to 100°C by steam, and cooked for 30-60 minutes, and then washed with clean water through the discharger equipment to clean the waste polyester fragments after cooking. Finally, the water is removed by the dehydration dryer equipment and sent to the next process by the feeding device; the broken and cleaned plastic sheets are color-graded and screened again, and the plastic sheets with similar colors are mixed evenly and put into the steam dryi...

Embodiment 2

[0052] This embodiment provides a kind of marine recycling fabric, and its preparation method comprises the following steps:

[0053] The material pretreatment method and melting process are the same as in Example 1.

[0054] Alcoholysis: Add the molten waste polyester to the alcoholysis kettle, dissolve the tertiary amine in ethylene glycol to prepare an ethylene glycol solution with a mass concentration of 40%, and add the ethylene glycol solution of the tertiary amine to the alcohol At the same time, add ethylene glycol which is 2 times the weight of the waste polyester raw material, and the reaction temperature in the alcoholysis tank is controlled at 220-270°C.

[0055] The mixed solution after depolymerization is kept at 150-220°C, and methanol (200%), titanium dioxide slurry (4%) and polyether polyol (200ppm) are added thereto simultaneously; then the temperature is raised to 220-260°C, And under the condition that the vacuum degree in the reactor is less than 100 Pa, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a preparation method of a marine recycled fabric, which comprises the following steps: sorting waste marine plastics, decontaminating, crushing, cleaning and dewatering to obtain a waste polyester raw material; the method comprises the following steps: adding a waste polyester raw material into a melting device for melting to obtain molten waste polyester; carrying out a depolymerization reaction on the molten waste polyester, an alcoholysis agent and an alcoholysis catalyst in an alcoholysis kettle to obtain a depolymer after alcoholysis; and carrying out repolymerization reaction on the alcoholysis depolymer to prepare regenerated polyester, spinning, coloring, and weaving to obtain the fabric. According to the preparation method provided by the invention, through multiple times of color screening, large difference of finally obtained yarn raw materials is avoided, and the influence on the weaving effect of the fabric is reduced; and during the repolymerization reaction, polyether polyol is added as an autocatalytic catalyst, so that the polyester crystal region prepared by repolymerization is enlarged, the fiber is softer, and the degree of dyeing is higher.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a marine recycled fabric and a preparation method thereof. Background technique [0002] Recycled polyester has been widely used in various industries. Its main source is recycled waste plastic products. The purpose is to turn waste into treasure, which can reduce environmental pollution and provide polyester raw materials for production. At present, the raw materials of recycled polyester mainly come from waste plastic products recycled on land, because the quantity is relatively large and it is easier to sort and use. For example, the patent application number CN201310361191.X discloses a kind of regenerated polyester ultra-short fiber, which is prepared by the following method: 1) remove the sundries of waste polyester bottles; 3) After crushing, cook at 85-100°C at high temperature, and further separate debris; 4) Put it into the belt-type friction cleaner, and add a small amount of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/24D01F6/92D01F1/10C08G63/87D04C1/02C08L67/00
CPCC08J11/24D01F6/92D01F1/10C08G63/87D04C1/02C08J2367/00D10B2331/04Y02W30/62
Inventor 黎亮汪治燕钟国能何立锋姚心培王斌
Owner NINGBO DAQIAN TEXTILE
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