High-modulus and low-extension polyester industrial yarns used for geofabric and production method thereof

A technology of polyester industrial yarn and geotextile, applied in the directions of stretch spinning, melt spinning, filament/thread forming, etc., can solve the problems of low tensile strength, fatigue resistance, low anti-aging ability, etc.

Inactive Publication Date: 2018-11-30
浙江金汇特材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of existing high-modulus low-elongation polyester industrial yarns used in geotextiles are low tensile strength, low fatigue resistance, and low aging resistance

Method used

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  • High-modulus and low-extension polyester industrial yarns used for geofabric and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 18

[0025] Example 18 Preparation of high modulus and low elongation polyester industrial yarn for spinning 2000D geotextile

[0026] The production method includes the following steps:

[0027] S1: Raw material ratio: raw material of high modulus low elongation polyester industrial yarn for geotextile, 50 to 70 parts of terephthalic acid, 20 to 30 parts of ethylene glycol, 0.018 to 0.035 parts of catalyst, and 0.35 to 0.75 parts of oil.

[0028] S2: Preparation of raw materials: Put terephthalic acid, ethylene glycol and catalyst into the vertical esterification tank 1 to carry out the first esterification reaction through the stirring of the stirring blade; the reaction products in the esterification tank 1 are transported to the horizontal via pipeline The esterification kettle 2 performs the second esterification reaction; after the two-step esterification reaction is completed, the reactants are transported to a stirred vertical reactor 3 for pre-condensation; the oligomer obtained ...

Embodiment 26

[0035] Example 26 Preparation of high modulus low elongation polyester industrial yarn for spinning 3000D geotextile

[0036] The production method includes the following steps:

[0037] S1: Raw material ratio: raw material of high modulus low elongation polyester industrial yarn for geotextile, 50 to 70 parts of terephthalic acid, 20 to 30 parts of ethylene glycol, 0.018 to 0.035 parts of catalyst, and 0.35 to 0.75 parts of oil.

[0038] S2: Preparation of raw materials: Put terephthalic acid, ethylene glycol and catalyst into the vertical esterification tank 1 to carry out the first esterification reaction through the stirring of the stirring blade; the reaction products in the esterification tank 1 are transported to the horizontal via pipeline The esterification kettle 2 performs the second esterification reaction; after the two-step esterification reaction is completed, the reactants are transported to a stirred vertical reactor 3 for pre-condensation; the oligomer obtained by t...

Embodiment 33

[0045] Example 33 Preparation of high modulus low elongation polyester industrial yarn for spinning 6000D geotextile

[0046] The production method includes the following steps:

[0047] S1: Raw material ratio: raw material of high modulus low elongation polyester industrial yarn for geotextile, 50 to 70 parts of terephthalic acid, 20 to 30 parts of ethylene glycol, 0.018 to 0.035 parts of catalyst, and 0.35 to 0.75 parts of oil.

[0048] S2: Preparation of raw materials: Put terephthalic acid, ethylene glycol and catalyst into the vertical esterification tank 1 to carry out the first esterification reaction through the stirring of the stirring blade; the reaction products in the esterification tank 1 are transported to the horizontal via pipeline The esterification kettle 2 performs the second esterification reaction; after the two-step esterification reaction is completed, the reactants are transported to a stirred vertical reactor 3 for pre-condensation; the oligomer obtained by t...

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Abstract

The invention discloses high-modulus and low-extension polyester industrial yarns used for geofabric and a production method thereof. The high-modulus and low-extension polyester industrial yarns comprise the following raw material such as 50-70 parts by weight of terephthalic acid, 20-30 parts by weight of glycol, 0.018-0.035 parts by weight of catalysts and 0.35-0.75 parts by weight of oil agents. A solid phase polymerization reactor is used for performing tackifying operation and used in conjunction with multi-head spinning technology and two-level drafting and one-level relaxation and heatsetting operation. Additionally, a twin-type winding machine is used for high-speed winding operation such that high-modulus and low-extension polyester industrial yarns used for solid-phase tackifying multi-head direct-spinning geofabric are achieved. During the above processing operation, drafting ration, relaxation ratio, drafting temperature and relaxation temperature help ensure breaking strength at the constant extension ratio of 5% during processing of polyester industrial yarns. During the application process, requirements for strength, drafting and anti-aging and other performance parameters are met.

Description

Technical field [0001] The invention relates to a high modulus low elongation polyester industrial yarn for geotextiles and a production method thereof, and belongs to the technical field of textiles. Background technique [0002] High modulus and low elongation polyester industrial yarn is a common product in the series of polyester industrial yarns. Due to the advantages of higher initial modulus, higher breaking strength, lower breaking elongation, and good impact resistance, it is mainly Used in industrial fields such as geogrid, geotechnical materials, and cables. [0003] The primary requirements of geotextiles are tensile strength, elongation at tear, tear strength, penetration strength, burst strength, creep, coefficient of friction with rock and soil, durability, anti-aging ability, etc. [0004] The disadvantages of the existing high modulus low elongation polyester industrial yarn used in geotextiles are low tensile strength, fatigue resistance and low aging resistance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/088D01D5/096D01D5/12D01D10/02D01F6/62
CPCD01D5/08D01D5/088D01D5/096D01D5/12D01D10/02D01F6/62
Inventor 马建平杨宇龙陈燕高亚辉朱家熠
Owner 浙江金汇特材料有限公司
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