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Polyester material recycling and laser surface treating method

A polyester material and surface treatment technology, applied in the field of polymer materials, can solve the problems of high energy consumption and poor physical properties of recycled polyester, and achieve the effect of reducing energy consumption for recycling

Active Publication Date: 2018-05-08
FUJIAN SAILON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, need to provide a kind of polyester material recycling processing method, be used to solve the high energy consumption of existing recycling polyester, and the problem of poor physical property

Method used

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  • Polyester material recycling and laser surface treating method
  • Polyester material recycling and laser surface treating method

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Experimental program
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Embodiment 1

[0048] A kind of polyester material reclaims and utilizes laser to carry out surface treatment method, comprises the following steps:

[0049] Alcoholysis: Put 100g of waste polyester, 180g of EG, and 2.7g of potassium carbonate into an alcoholysis kettle, replace the air with nitrogen, heat up to a temperature of 200°C, and carry out alcoholysis for 3.0 hours.

[0050] Removal of impurities: the above-mentioned alcoholyzate is cooled to 170°C, and filtered through a 100-mesh filter to remove solid impurities. Solid impurities are washed with 170°C hot EG90g, and the washed EG returns to the alcoholysis kettle to carry out the next batch of waste polyester alcoholysis.

[0051] Exchange reaction: add 180g of methanol and 2.7g of potassium carbonate to the above alcoholyzate, keep the temperature at 75°C, and the reaction time is 1.0hr.

[0052] Crude extraction: the temperature of the above-mentioned transesterification product is lowered to 40°C, and DMT crystallizes out. B...

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Abstract

The invention relates to the field of polymeric materials, and provides a polyester material recycling and ultrasonic surface treating method for solving the problems that existing polyester recyclingconsumption is high and the physical performance is poor. The method comprises the steps that a recycled polyester material and EG are put into an alcoholysis kettle for alcoholysis, an alcoholysateis obtained, and the weight ratio of the polyester material to the EG is 1:1.0-2.0; methyl alcohol is added into the alcoholysate, and the transesterification is performed to obtain an ester exchangeproduct; the ester exchange product is cooled to separate out DMT crystals, and filtering is performed to obtain a DMT filter cake; spinning is performed, wherein graphene / polyester fiber is preparedthrough the composite spinning technology; laser treating is performed, wherein a laser generator is used for generating laser beams, the movement surface of the graphene / polyester fiber is heated, and the surface of the graphene / polyester fiber irradiated by laser beams is subjected to polyester gasification. The polyester recycling consumption can be lowered, and the performance of graphene in the prepared graphene / polyester fiber can be improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for recycling polyester materials and using lasers for surface treatment. Background technique [0002] Polyester (polyethylene terephthalate, PET) is the synthetic fiber material with the largest output, and is widely used in products such as fibers, textile fabrics, clothing, polyester bottles, films, and sheets. Based on the enhancement of environmental awareness, resource conservation and sustainability needs, how to deal with the scraps produced in the manufacture of polyester products and the waste after use of polyester products has become an urgent problem to be solved, and the recycling of waste and old polymers has become the development direction of green textiles. . [0003] At present, the recycling methods of waste polyester mainly include physical recycling and chemical recycling. Physical recycling methods are relatively simple and economical, but the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/00D01F6/84D01F1/10C08J11/24D06M101/32C08L67/02
CPCC08J11/24C08J2367/02D01F1/10D01F6/84D06M10/005D06M2101/32Y02W30/62
Inventor 方华玉王国德杨元坤托马斯·沃尔特施密特朱恩斌李天源杨元荣鲍领翔徐明辉
Owner FUJIAN SAILON TECH CO LTD