Engineering fibre manufacturing technique for polyester reclaiming material road

A technology of recycling materials and engineering fibers, which is applied in the direction of single-component polyester artificial filaments, filament generation, heating/cooling fabrics, etc., can solve the problems that cannot meet the performance requirements of road engineering fibers, and achieve a large elastic modulus , Low production cost, easy to disperse effect

Inactive Publication Date: 2008-09-17
谭亦武 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the products produced by the current recycled PET technology cannot meet the performance requirements of road engineering fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production process of polyester recycled material road fiber in this example adopts the prior art polyester recycled material production process of fiber, and makes corresponding improvements; the specific process includes: batching, feeding, vibrating screening, conveying, pre-drying , drying or viscosifying drying, adding nucleating agent (PP), screw extrusion, melt filtration, spinning, tow cooling, winding oiling, reciprocating falling barrel, clustering, drawing, tension heat setting, through crimping Machine, loose heat setting, cutting, packing and other steps.

[0019] In the batching step, for polyester recycled materials from different sources, select polyester recycled materials with an intrinsic viscosity value above 0.8(η), PVC content ≤ 40ppm, aluminum and other metal content ≤ 20ppm, and glue and other pollutants content of zero; characteristics The detection method of the viscosity value adopts the Ubbelohde viscosity method, and the intrinsic viscos...

Embodiment 2

[0029] In this example, on the basis of the first embodiment above, the specific implementation parameters are selected as follows:

[0030] The intrinsic viscosity of the raw material is controlled at 0.85±0.05η, the intrinsic viscosity of the spinning melt is controlled at 0.66±0.02η, the addition ratio of nucleating agent PP is 2.5±0.5%, the oiling rate is 0.1~0.15%, and the oil bath temperature is 80±5℃ , the temperature of the third drafting roll is 140-160°C, the setting temperature of the fifth roll is 180-200°C, the relaxation heat setting time is 25-30min, and the setting temperature is 130-140°C. The technical indicators of the road engineering fiber produced are as follows :

[0031] project

indicators

project

indicators

Denier (dtex)

3.0～3.5

Melting point (°C)

255

Breaking strength (cn / dtex)

≥5.5

Ignition point (℃)

555

Specific gravity (g / cm3)

1.36

safety

non-toxic

Elo...

Embodiment 3

[0036] The difference between this example and the first example above is that when the intrinsic viscosity of the raw material is in the range of 0.75-0.80η, the drying temperature is controlled in the range of 200-220°C, the drying time is more than 8 hours, and the vacuum pressure is about 0.1MPa , Use pure nitrogen to isolate the air for protection when discharging, so as to improve the intrinsic viscosity of raw materials.

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PUM

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Abstract

The invention discloses a polyester recycled material road used technical fiber production process, which includes the following steps: dosing, batch charging, vibratory screening, feeding, pre-drying, drying or tackifying drying, adding nucleator, screw extrusion, melt filtrating, spinning, tow cooling, rolling and oiling, reciprocating tank falling, bunching, drafting, tension-setting, passing through a crimping machine, and shrink-setting. The invention improves the prior polyester recycled material technical fiber production process, and can adopt the polyester recycled material to produce the eligible road used technical fiber with low cost, environmental protection, and saved resource; which accords with the present nation called circulating economic developing ideology. The product quality completely achieves the quality standard of the road used technical fiber at home and abroad.

Description

【Technical field】 [0001] The invention relates to a production process of a polyester material. 【Background technique】 [0002] With the rapid development of our country's economy, the rapid increase of traffic vehicles and the wide application of heavy vehicles, it is very urgent to improve the durability of asphalt pavement and high strength stability. At the end of the 1970s, the United States began to develop polyester road engineering fibers, which have been widely used in asphalt mixtures in many countries in Europe and the United States for more than 20 years. Through inspection, observation, research and analysis data, it is shown that road engineering fibers have high tensile strength. , high modulus of strength, and good oil absorption effect, can obviously reinforce and bridge the road surface, and can greatly improve the flexibility of the road surface, thereby improving the high temperature rutting resistance of the asphalt pavement. Due to the low-temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D5/08D01D5/088D01D5/096D01D11/00D01F1/10D01F6/62D02J1/22D02J13/00D06C7/02
Inventor 谭亦武王青春
Owner 谭亦武
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