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Cooling regenerated PET fiber and preparation method thereof

A fiber and foam technology, applied in the field of cooling recycled PET fiber and its preparation, can solve the problems of poor hydrophilicity, single performance of recycled PET fiber, and lack of comfort of cooling recycled PET fiber, and achieve simple process steps and good affinity water effect

Active Publication Date: 2021-09-07
CIXI JIANGNAN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the performance of regenerated PET fiber is single. In order to make regenerated PET fiber have cooling performance, the method of adding ultra-high molecular weight polyethylene is usually used, so as to transmit the mid-infrared radiation emitted by the human body, and the prepared fabric has a cooling effect.
[0005] However, the ultra-high molecular weight polyethylene macromolecule does not contain polar groups, and its hydrophilicity is poor, and the obtained cooled recycled PET fiber does not have comfort when it is made into clothes

Method used

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  • Cooling regenerated PET fiber and preparation method thereof

Examples

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preparation example

[0041] Using toluene as a solvent, under the catalysis of chloroplatinic acid, through the hydrosilylation reaction of hydrogen-containing siloxane and unsaturated glycidyl ether, poly(ethylene oxide propylene oxide), the reaction is controlled at 85 ° C, the reaction process Under the protection of nitrogen gas, the reaction time is 4~5h, and the amphiphilic comb polyether siloxane is prepared. The Mn measured by GPC method (PL-GPC220, Polymer Laboratories Ltd) is 2.5×10 4 , Mw is 3.6×10 4 , n:(n+m)=0.4, the contents of PPO and PEO segments were 38.7 wt% and 44.0 wt%, respectively.

Embodiment 1

[0044] A preparation method for cooling regenerated PET fibers, comprising the following preparation steps:

[0045] S1. Preparation of modified ultra-high molecular weight polyethylene

[0046] Blending ultra-high molecular weight polyethylene and amphiphilic comb polyether siloxane at a mass ratio of 4:1 to obtain modified ultra-high molecular weight polyethylene;

[0047] S2, preparation of recycled PET foam

[0048] b1, crushing, cleaning and vacuum-drying waste PET fibers to obtain PET fragments;

[0049] b2. Fully mix PET chips and antioxidant 168, and then pre-melt pellets at 200°C for 4 minutes to obtain PET foam;

[0050] b3, vacuum-drying the PET foam in b2 to obtain recycled PET foam;

[0051] S3, weighing raw materials

[0052] Be the ratio of 6:1 by mass ratio and take the regenerated PET foam material that makes in S2 and the modified ultra-high molecular weight polyethylene that make in S1;

[0053] S4, prepare regenerated PET fiber

[0054]The regenerated...

Embodiment 2

[0057] A preparation method for cooling regenerated PET fibers, comprising the following preparation steps:

[0058] S1. Preparation of modified ultra-high molecular weight polyethylene

[0059] Blending ultra-high molecular weight polyethylene and amphiphilic comb polyether siloxane at a mass ratio of 3:1 to obtain modified ultra-high molecular weight polyethylene;

[0060] S2, preparation of recycled PET foam

[0061] b1, crushing, cleaning and vacuum-drying waste PET fibers to obtain PET fragments;

[0062] b2. Fully mix PET fragments and antioxidant 168, and then pre-melt pellets at 210°C for 4 minutes to obtain PET foam;

[0063] b3, vacuum-drying the PET foam in b2 to obtain recycled PET foam;

[0064] S3, weighing raw materials

[0065] Be that the ratio of 7:1 by mass ratio takes the regenerated PET foam material that makes in S2 and the modified ultra-high molecular weight polyethylene that makes in S1;

[0066] S4, prepare regenerated PET fiber

[0067] The reg...

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Abstract

The invention relates to the technical field of regeneration of waste PET products, and particularly discloses a cooling regenerated PET fiber and a preparation method thereof. The cooling regenerated PET fiber comprises the following raw materials in parts by mass of 85-105 parts of a regenerated PET foam material and 10-18 parts of modified ultra-high molecular weight polyethylene, wherein the modified ultra-high molecular weight polyethylene is prepared by mixing ultra-high molecular weight polyethylene and a polyether organosilicon copolymer. The preparation method comprises the following steps of S1, weighing the regenerated PET foam material and the modified ultra-high molecular weight polyethylene in proportion; and S2, uniformly mixing the raw materials weighed in the step S1, and then carrying out melt spinning to prepare the regenerated PET fiber. The cooling regenerated PET fiber disclosed by the invention can be used for preparing textiles and has the advantage of cooling; and in addition, the preparation method has the advantage of high production efficiency.

Description

technical field [0001] This application relates to the technical field of regeneration of waste PET products, more specifically, it relates to a kind of temperature-reduced recycled PET fiber and its preparation method. Background technique [0002] In the application field of polymer materials, with the increase in the amount of polyethylene terephthalate (PET), the solid waste PET polyester discharged into nature every year also increases sharply. In 2018, the global PET output was as high as 79.68 million tons, while still growing rapidly at an average annual rate of 8.5%. However, because PET is difficult to degrade in nature, illegal landfill or incineration will cause huge pressure on the environment, and a large amount of waste PET urgently needs to be recycled. [0003] There are many ways to recycle waste PET, mainly including energy recovery, physical recovery, chemical recovery and biological recovery. Among them, chemical recovery can realize the regeneration an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10
CPCD01F6/92D01F1/10
Inventor 孙祖康孙华朱琳刘华胜黄戎杰毛雄峰
Owner CIXI JIANGNAN CHEM FIBER