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High-strength nonwoven geotechnical cloth

A geotextile and non-woven technology, applied in the field of textiles, can solve the problems of poor mechanical properties and permeability of non-woven geotextiles, and achieve the effects of increased mechanical strength, improved permeability, and reduced density

Inactive Publication Date: 2018-01-26
广西友联土工材料制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is to provide a high-strength non-woven geotextile for the problems of poor mechanical properties and permeability of traditional nonwoven geotextiles.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • High-strength nonwoven geotechnical cloth

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] The carbon fiber and 65% nitric acid solution by mass are mixed in a beaker at a mass ratio of 1:8, and the beaker is moved into a digital speed measuring thermostat magnetic stirrer. The temperature is 65°C and the rotation speed is 320r / min. After stirring and reacting for 5 hours, filter to obtain a filter cake. The filter cake is washed with deionized water 5 times to obtain oxidized carbon fiber. The oxidized carbon fiber and activated soybean fiber are mixed in the flask at a mass ratio of 12:1, and the oxidation is added to the flask. Carbon fiber mass 1.0 times the mass fraction of 45% potassium permanganate solution, move the flask into a digital speed constant temperature magnetic stirrer, at a temperature of 50 ℃, under the conditions of a rotation speed of 320r / min, constant temperature stirring reaction for 150 minutes, filtered, and filter residue , The mixed carbon fiber is obtained. After washing the mixed carbon fiber with deionized water for 5 times, it ...

example 2

[0025] Mix the carbon fiber and 65% nitric acid solution by mass in a beaker at a mass ratio of 1:8, and move the beaker into a digital speed-measuring thermostatic magnetic stirrer. At a temperature of 65°C and a rotational speed of 320r / min, the temperature is constant. After stirring and reacting for 5 hours, filter to obtain a filter cake. The filter cake is washed with deionized water 5 times to obtain oxidized carbon fiber. The oxidized carbon fiber and activated soybean fiber are mixed in the flask at a mass ratio of 12:1, and the oxidation is added to the flask. Carbon fiber mass 1.0 times the mass fraction of 45% potassium permanganate solution, move the flask into a digital speed constant temperature magnetic stirrer, at a temperature of 50 ℃, under the conditions of a rotation speed of 320r / min, constant temperature stirring reaction for 150 minutes, filtered, and filter residue , The mixed carbon fiber is obtained. After washing the mixed carbon fiber with deionized ...

example 3

[0027] Mix the carbon fiber and 65% nitric acid solution by mass in a beaker at a mass ratio of 1:8, and move the beaker into a digital speed-measuring thermostatic magnetic stirrer. At a temperature of 65°C and a rotational speed of 320r / min, the temperature is constant. After stirring and reacting for 5 hours, filter to obtain a filter cake, and wash the filter cake with deionized water 5 times to obtain oxidized carbon fiber to obtain modified carbon fiber; the polyacrylonitrile fiber and the 45% sodium hydroxide solution by mass ratio are 1 :5 Mix in a beaker, move the beaker into a digital speed-measuring constant-temperature magnetic stirrer, stir and react at a constant temperature for 3 hours at a temperature of 65°C and a rotational speed of 300r / min, and filter to obtain an alkalized polyacrylonitrile fiber filter cake. The alkalized polyacrylonitrile fiber filter cake and the activated bamboo fiber were mixed in a wide-mouthed flask at a mass ratio of 10:1, and 0.5 ti...

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Abstract

The invention discloses high-strength nonwoven geotechnical cloth, and belongs to the field of textiles. The high-strength nonwoven geotechnical cloth is prepared from, by weight, 30-40 parts of modified carbon fibers (with the length of 60-80 mm) and 40-50 parts of modified polyacrylonitrile fibers ( with the length of 70-90 mm); the modified carbon fibers and modified polyacrylonitrile fibers are mixed and subjected to opening to obtain mixed fibers, the mixed fibers are put in a lapping machine, after being processed by the lapping machine, the mixed fibers are put in a needle machine, needling treatment is conducted according to the needling density of 100 needles / cm2, pre-treated geotechnical cloth is obtained, after being soaked in a potassium permanganate solution, the pre-treated geotechnical cloth is washed and dried, and the high-strength nonwoven geotechnical cloth is obtained. The prepared geotechnical cloth has high mechanical strength and good permeability.

Description

Technical field [0001] The invention discloses a high-strength non-woven geotextile, which belongs to the textile field. Background technique [0002] Filament spunbond needle-punched non-woven geotextiles are widely used in the field of infrastructure construction, such as hydraulic engineering dams, slope protection, channels, highways, railways, airport runways, soil slopes, retaining walls, pavements, port engineering, beach dikes , Harbour terminals, etc. Filtration and drainage are one of the main functions of geotextiles. In the application, geotextiles are required to prevent particulate matter from losing with water flow, but also have certain water permeability. Therefore, the pore size and permeability coefficient of geotextiles are used to evaluate geotextiles. Important indicators. [0003] The unique three-dimensional fiber network structure of non-woven geotextile makes it have good filterability and water permeability, so it is widely used in civil construction pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4242D04H1/43D04H1/4382D04H1/46D06M11/05D06M11/38D06M11/50D06M11/65D06M15/01D06M15/15D06M16/00D06M101/28D06M101/40
Inventor 徐颜峰陈龙
Owner 广西友联土工材料制造有限公司