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High-quality PET fiber prepared from recycled plastic bottle sheets

A recycled plastic, high-quality technology, applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve the problems of increased difficulty in recycling plastic bottles, large differences in components, and increased processing costs, to improve application performance, The effect of reducing the processing and molding temperature and facilitating stable control

Inactive Publication Date: 2021-04-13
界首市成铭塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce environmental pollution, people recycle waste plastic bottles, but because the materials of recycled plastic bottles are relatively complex and their components vary greatly, it is difficult to recycle plastic bottles.
Moreover, in order to make the recycled plastic new products meet the performance requirements, it is necessary to add new resins and various functional additives, which will increase the processing cost

Method used

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  • High-quality PET fiber prepared from recycled plastic bottle sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] PET recycled plastic bottle flakes are cleaned, dried, crushed, melted and plasticized at 285°C, extruded and granulated to obtain PET recycled plastic pellets, and then acrylonitrile-allyl is added in a mass ratio of 100:20:8 Trimethylsilylamine copolymer and precipitated silica are melted and blended at 250°C to obtain a spinning melt, and the spinning melt is transported to the spinning box for spinning, oiling, drafting, and side blowing Cooling and winding, the spinning temperature is 250°C, the temperature of side blowing is 25°C, the relative humidity is 75%, the wind speed is 0.4m / s, the draft ratio is 3 times, and the winding speed is 3200m / min. PET fibers.

Embodiment 2

[0035] PET recycled plastic bottle flakes are washed, dried, crushed, melted and plasticized at 285°C, extruded and granulated to obtain PET recycled plastic pellets, and then acrylonitrile-allyl is added in a mass ratio of 100:25:5 Trimethylsilylamine copolymer and precipitated silica are melted and blended at 250°C to obtain a spinning melt, and the spinning melt is transported to the spinning box for spinning, oiling, drafting, and side blowing Cooling and winding, the spinning temperature is 250°C, the temperature of side blowing is 25°C, the relative humidity is 75%, the wind speed is 0.4m / s, the draft ratio is 3 times, and the winding speed is 3200m / min. PET fibers.

Embodiment 3

[0038] PET recycled plastic bottle flakes are cleaned, dried, crushed, melted and plasticized at 285°C, extruded and granulated to obtain PET recycled plastic pellets, and then acrylonitrile- Allyltrimethylsilylamine copolymer, N,N-dimethyl-2-(piperidin-4-yloxy)benzamide and precipitated silica were melt blended at 235°C to obtain a spinning melt The spinning melt is transported to the spinning box, spinning, oiling, drafting, side blowing cooling, winding, the spinning temperature is 235°C, the side blowing temperature is 25°C, and the relative humidity is 75%. , the wind speed is 0.4m / s, the drafting ratio is 3 times, and the winding speed is 3200m / min to obtain PET fibers.

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Abstract

The invention discloses a high-quality PET fiber prepared from recycled plastic bottle sheets, and relates to the technical field of plastic processing. The regeneration of the PET plastic bottle sheets is achieved, the PET plastic bottle sheets are made into the PET fiber by adding auxiliary materials, so that the processing and forming temperature is reduced, the application performance of the prepared PET fiber can be improved, and the application range of a recycled PET product is widened. Equipment adopted by the processing method is conventional equipment in the field, and the purchase cost of new equipment does not need to be increased; and meanwhile, control parameters are clear, and stable control over the quality of the PET fibers of the product is facilitated.

Description

Technical field: [0001] The invention relates to the technical field of plastic processing, in particular to a high-quality PET fiber prepared from recycled plastic bottle flakes. Background technique: [0002] PET is the abbreviation of polyethylene terephthalate, which is synthesized from dihydroxyethyl terephthalate by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. ester, and then made by polycondensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface, and is a common resin in daily life. PET has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor. Good creep resistance...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01F8/14D01F8/08
CPCD01F1/10D01F6/92D01F8/08D01F8/14
Inventor 王磊
Owner 界首市成铭塑业有限公司