CN101768808A - High load shock-resistant degradable geotextile and production method thereof - Google Patents
High load shock-resistant degradable geotextile and production method thereof Download PDFInfo
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- CN101768808A CN101768808A CN200810154643.6A CN200810154643A CN101768808A CN 101768808 A CN101768808 A CN 101768808A CN 200810154643 A CN200810154643 A CN 200810154643A CN 101768808 A CN101768808 A CN 101768808A
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Abstract
The invention discloses a high load shock-resistant degradable geotextile and a production method thereof, the fabric structure of the geotextile is in a stiffened net structure, grids (1) with a spacing of 4cm and ribs (2) with a spacing of 1cm are woven on the fabric respectively in the warp and weft directions, and plain woven fabric is arranged between the grids and the ribs; and the grid (1) adopts rapidly permeable polyethylene fiber with an H-shaped section and a low softening point to weave, the rib (2) adopts high load polypropylene fiber to weave, and the plain woven fabric therebetween adopts vinylon fiber to weave. The production method comprises two steps of fiber production and fabric production. The invention has the beneficial effects that the geotextile uses special fibers and a special fabric structure, thus being capable of satisfying the comprehensive technical requirements of geotextile bags such as high strength, shock resistance, acid resistance, base resistance, high temperature resistance, rapid permeability, low softening and deforming temperature, partial degradability when meeting with water and the like. Both the special fibers and the special fabric structure are originally created, not only are suitable for geotextile but also have good reference value for other engineering fabrics.
Description
(1) technical field
The present invention relates to a kind of fabric and manufacture method thereof of field of textiles, particularly relate to a kind of high load shock-resistant degradable geotextile and manufacture method thereof.
(2) background technology
Build highway and build the road in areas such as soft base, marsh, frozen soil, need in the hole, water quick lime and flyash powder, form firm foundation pile to the underground circular hole that pierces 20 centimetres of 6～9 meters dark, diameters through regular meeting.Water quick lime and flyash powder and need be contained in geotextiles sack (mud foundation pile pipe bag) lining and drop into a stake hole, thereby indexs such as the toughness of geotextiles, intensity, impact resistance, ageing resistance, permeable speed are had very high requirement.
Concrete specification requirement to geotechnological cloth bag is summarized as follows: can not leak ash after 1, adding quick lime and flyash fine powder; 2, the primary concreting 380 kilograms of ashes that weigh, dropping into 6～9 meters dark stake holes can not break, and can not fracture in transit, and cloth bag has high tenacity, high strength, shock resistance; 3, the fabric water permeability is strong, and the water in mud can enter in the cloth bag and calcium lime powder and coal ash powder generation heat release expansion reaction; 4, part fabric-softening distortion forfeiture brute force is broken or degraded, thawing are melted mutually with ambient earth and condensed into one in course of reaction; 5, another part fabric have heat resistance, acid and alkali-resistance, anticorrosive, anti-aging, do not break, do not melt, in mud, form durability muscle shape reinforcing network, play the effect of mild steel muscle, strengthen the anti-pressure ability of foundation pile; 6, in mud the bag with bag between can freely be connected, be applicable to any length foundation pile.And the geotextiles that nonwoven fabric (being mainly viscose) that uses at present or simple polyamide fibre, terylene, polypropylene fibre, polyethylene are made can't satisfy above-mentioned overall target fully.
(3) summary of the invention
In order to overcome the weak point of existing product and technology, the invention provides a kind of high load shock-resistant degradable geotextile and manufacture method thereof.
Specificity analysis to existing fiber commonly used:
1, cotton fiber: do strong generally, water-swellable influence water permeability, can not degrade in a middle or short term at mud and break, and can not burst during with quick lime reaction expansion, also do not dissolve during 135 ℃ of quick lime heat release maximum temperatures, and wet brute force is very big.
2, viscose: intensity is low, and wet strength is lower, is about 60% of dry strength.Intensity significantly descends in the time of 110 ℃, but can not melt.Acid resistance is poor, but ability is generally alkaline, softening breaking in the time of 80 ℃.
3, polyster fibre: do the wet strength height, more shock-resistant, the heat resistance height, alkali resistance not for a long time can hydrolysis in superheated steam, can not degrade in the time of 80 ℃.
4, acrylic fiber: intensity is low, has expansion character, and is not alkaline-resisting, meets base strength and descend, and 80 ℃ to it to no effect.
5, nylon fibre: the intensity height, ABRASION RESISTANCE is good, and shock-resistant good heat resistance is alkaline-resisting not acidproof, and price is terylene, polypropylene fibre one times.
6, polyvinyl alcohol fibre: intensity is general, and not as polyamide fibre, terylene, polypropylene fibre, alkali resistance is general, and poor heat resistance (hygrometric state following 110 ℃ time softening) can be dissolved in water.
7, polypropylene fiber: the intensity height, the acid-fast alkali-proof good heat resistance, the hot shortness is poor, and is non-hygroscopic, but the big shock resistance of fragility, intensity is lower than terylene and polyamide fibre.
More than seven kinds of fibers can meet following three primary conditions simultaneously without any a kind of:
1, intensity height, shock resistance, acidproof, alkaline-resisting, high temperature resistant more than 135 ℃.
2, fast permeable speed, the softening transform temperature is lower than 80 ℃.
3, preferably meet the water degraded.
Conclusion: single fiber is made geotextiles (sack) and is not reached requirement, can only take mutual composition complementary method.
From the first condition analysis: polyamide fibre＞terylene＞polypropylene fibre＞polyvinyl.
Polyamide fibre is alkaline-resisting not acidproof, on the high side.Terylene is acidproof not alkaline-resisting, polypropylene fibre and polyvinyl acid and alkali-resistance, but polyvinyl non-refractory, and intensity is not as polypropylene fibre.Have only polypropylene fibre to meet first condition substantially, but polypropylene fibre fragility is big, notched Izod impact strength is low, and ageing resistance is poor, must carry out modification to it.
From the second condition analysis: do not have a kind of conventional fibre material can permeable speed, and it is powerful to begin the softening transform loss in the time of 80 ℃, shrinkage factor be 15% or more and part fracture in contraction process, degrade and break.So must carry out modification to the fiber that molten point is low in the conventional fibre or reach second condition by fabric construction design.
From the 3rd condition analysis:
The fiber of meeting the water degraded has only the dimension human relations to meet this condition.
From above analysis, first, second condition be satisfied and fibre property mutual supplement with each other's advantages need be carried out, fiber is carried out modification or upgrades the fabric construction design.
Technical scheme of the present invention is to realize like this.
According to above analysis, the geotextiles of this programme adopts the high-load polypropylene fiber of our company's development and H type cross section low softening point permeable speed polyethylene fiber and the common polyvinyl alcohol fibre yarn as geotextile fabric, and adopts unique reinforcement mesh structure.
The high load shock-resistant degradable geotextile of this programme, its fabric construction are the reinforcement network structure, that is: to be woven with spacing be that 4 centimetres of grids and spacing are 1 centimetre muscle for the warp-wise of fabric, broadwise, is plain cloth therebetween; Described grid adopts the low softening point permeable speed polyethylene fiber braiding of H type cross section, and muscle adopts the high-load polypropylene fiber braiding, and plain cloth therebetween adopts the polyvinyl alcohol fibre braiding.
Above-mentioned geotextiles is made into a pipe bag shape when weaving.
Described high-load polypropylene fiber fracture strength is about 8g/d, exceed about 1 times than common polyamide fibre, terylene, brute force is constant when humidity, toughness reinforcing impact resistance exceeds about 1 times than normal polypropylene, the anti-aging polyamide fibre that surpasses, acid-fast alkali-proof does not react with quick lime, do not degrade, without putrefaction, fusing point is up to 176 ℃.This fiber plays the effect of mild steel muscle reinforcing network in geotechnological stringing bag.
Described H type cross section low softening point permeable speed polyethylene fiber softening transform temperature is 65 ℃, and shrinkage factor is more than 15% in the time of 80 ℃, and the part fiber ruptures in contraction process, bonds and break, and does not leak ashes, but the energy permeable speed has the thawing pervious function.
Described polyvinyl alcohol fibre plays the part degradation.
The manufacture method of the geotextiles of this programme is as follows:
1, make H type cross section low softening point permeable speed polyethylene fiber peacekeeping high-load polypropylene fiber:
(1), adopts melt spinning manufactured H type cross section low softening point permeable speed polyethylene fiber, its spinnerets employing H type hole.This fiber is made up of the functional agglomerate of 80% PE section and 20%.Salt copolymer in the low molecule PE wax of described functional agglomerate 10%, 0.5% low melting point fatty acid amide, 0.3% LS-744 light stabilizer, 0.3% silicic acid fat coupling agent, 0.2% the quaternary ammonium carboxylic acid, 0.2% 1010 antioxidant and 88.5% PE section are formed.Above-mentioned content all is weight percentage.
(2), adopt melt spinning manufactured high-load polypropylene fiber, this fiber is made up of 80% HY525PP section and 20% functional agglomerate.Described functional agglomerate is by 5% EPDM, 1.5% inorganic nano calcium carbonate CaCO
3, 0.3% three butane heat stabilizers, 0.3% benzotriazole light stabilizer, 0.2% DLDTP assistant, 0.3% 1010 antioxidants, 0.2% 168 antioxidants, 0.3% titanate esters corner connection agent, 0.25% odium stearate, 0.5% low molecule PE HY525PP section cured and 91.15% form.Above-mentioned content all is weight percentage.
2, weave high load shock-resistant degradable geotextile:
Fabric warp thread, weft yarn adopt H type cross section low softening point permeable speed polyethylene fiber, high-load polypropylene fiber and polyvinyl alcohol fibre respectively, it wherein is 4 centimetres grid with H type cross section low softening point permeable speed polyethylene fiber braid pitch, with the high-load polypropylene fiber braid pitch is 1 centimetre muscle, and all the other adopt polyvinyl alcohol fibres braiding.Fabric is made into pipe bag shape when braiding.
Usefulness of the present invention is: this geotextiles has adopted special fiber and special fabric construction, can satisfy geotechnological cloth bag desired strength height, shock resistance, acidproof, alkaline-resisting, high temperature resistant and fast permeable speed, softening transform temperature be low, meet complex art requirement such as water section degraded.And cost is lower, is suitable for promoting the use of.Specialty fibers that it adopted and fabric construction are initiative, not only are fit to be applied to geotextiles, and also have extraordinary reference value for other engineering with cloth.
(4) description of drawings
Accompanying drawing is the fabric construction figure of the geotextiles of this programme.
(5) specific embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further.
Embodiment:
Make the geotextiles of this programme, at first need to make two kinds of specialty fibers, i.e. H type cross section low softening point permeable speed polyethylene fiber peacekeeping high-load polypropylene fiber.These two kinds of fibers are our company's initiative.
H type cross section low softening point permeable speed polyethylene fiber peacekeeping high-load polypropylene fiber all is the fibers that adopt melt spinning method to spin out, and its production technology is a known technology.
Wherein: H type cross section low softening point permeable speed polyethylene fiber is made up of the functional agglomerate of 80% PE section and 20%.(above-mentioned content all is weight percentage) formed in salt copolymer in the low molecule PE wax of described functional agglomerate 10%, 0.5% low melting point fatty acid amide, 0.3% LS-744 light stabilizer, 0.3% silicic acid fat coupling agent, 0.2% the quaternary ammonium carboxylic acid, 0.2% 1010 antioxidant and 88.5% PE section.Its key problem in technology is that also spinnerets adopts H type hole.
High-load polypropylene fiber is made up of the functional agglomerate of 80% HY525PP section and 20%.Described functional agglomerate is by 5% EPDM, 1.5% inorganic nano calcium carbonate CaCO
3, 0.3% three butane heat stabilizers, 0.3% benzotriazole light stabilizer, 0.2% DLDTP assistant, 0.3% 1010 antioxidants, 0.2% 168 antioxidants, 0.3% titanate esters corner connection agent, 0.25% odium stearate, 0.5% low molecule PE HY525PP section cured and 91.15% form (above-mentioned content all is weight percentage).
The geotextiles of this programme except that adopting above-mentioned two kinds of special fibers, also adopted common polyvinyl alcohol fibre, utilize its degradable characteristic.
The geotextiles of this programme has adopted special reinforcement network structure, that is: to be woven with spacing be that 4 centimetres of grids and spacing are 1 centimetre muscle for the warp-wise of fabric, broadwise, is plain cloth therebetween; Grid adopts the low softening point permeable speed polyethylene fiber braiding of H type cross section, and muscle adopts the high-load polypropylene fiber braiding, and plain cloth therebetween adopts the polyvinyl alcohol fibre braiding.
China Textile News proposed in " seeing the technical textile development after the calamity " according on July 8th, 2008: along with the continuous research and development and the actual demands of engineering of domestic and international geotechnological material, the geotextile kind need be constantly brought forth new ideas.High flow rate be if can resist, the strong geotextiles of superelevation of big load, the pipe bagging of suitable mud fill etc. born.And proposed to solve as soft basic problem, filled out the reflection crack problem that the boundary problem of digging, height are filled out roadbed problem, side slope surface protection question and the bituminous paving in highway dike stable problem, marsh and frozen soil area.
The geotextiles of this programme has solved the demand to a certain extent, has filled up a technological gap in the geotextiles technical field.
Claims (3)
1. high load shock-resistant degradable geotextile, it is characterized in that: the fabric construction of this geotextiles is the reinforcement network structure, that is: to be woven with spacing be that 4 centimetres of grids (1) and spacing are 1 centimetre muscle (2) for the warp-wise of fabric, broadwise, is plain cloth therebetween; Described grid (1) adopts the low softening point permeable speed polyethylene fiber braiding of H type cross section, and muscle (2) adopts the high-load polypropylene fiber braiding, and plain cloth therebetween adopts the polyvinyl alcohol fibre braiding.
2. geotextiles according to claim 1 is characterized in that: this geotextiles is woven into pipe bag shape.
3. the manufacture method of a high load shock-resistant degradable geotextile is characterized in that:
This method comprises fiber manufacturing and two steps of fabric manufacturing:
(1), make H type cross section low softening point permeable speed polyethylene fiber peacekeeping high-load polypropylene fiber:
1. adopt melt spinning manufactured H type cross section low softening point permeable speed polyethylene fiber, its spinnerets adopts H type hole; Its fiber is made up of the functional agglomerate of 80% PE section and 20%.Salt copolymer in the low molecule PE wax of described functional agglomerate 10%, 0.5% low melting point fatty acid amide, 0.3% LS-744 light stabilizer, 0.3% silicic acid fat coupling agent, 0.2% the quaternary ammonium carboxylic acid, 0.2% 1010 antioxidant and 88.5% PE section are formed; Above-mentioned content all is weight percentage;
2. adopt melt spinning manufactured high-load polypropylene fiber, this fiber is made up of the functional agglomerate of 80% HY525PP section and 20%; Described functional agglomerate is by 5% EPDM, 1.5% inorganic nano calcium carbonate CaCO
3, 0.3% three butane heat stabilizers, 0.3% benzotriazole light stabilizer, 0.2% DLDTP assistant, 0.3% 1010 antioxidants, 0.2% 168 antioxidants, 0.3% titanate esters corner connection agent, 0.25% odium stearate, 0.5% low molecule PE HY525PP section cured and 91.15% form; Above-mentioned content all is weight percentage;
(2), weave high load shock-resistant degradable geotextile:
Fabric warp thread, weft yarn adopt H type cross section low softening point permeable speed polyethylene fiber, high-load polypropylene fiber and polyvinyl alcohol fibre respectively, it wherein is 4 centimetres grid with H type cross section low softening point permeable speed polyethylene fiber braid pitch, with the high-load polypropylene fiber braid pitch is 1 centimetre muscle, and all the other adopt polyvinyl alcohol fibres braiding; Fabric is made into pipe bag shape when braiding.
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| CN200810154643.6A CN101768808B (en) | 2008-12-29 | 2008-12-29 | High load shock-resistant degradable geotextile and production method thereof |
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| CN200810154643.6A CN101768808B (en) | 2008-12-29 | 2008-12-29 | High load shock-resistant degradable geotextile and production method thereof |
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| CN101768808B CN101768808B (en) | 2013-07-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011394A (en) * | 2010-11-12 | 2011-04-13 | 赵莹莹 | Method for reinforcing aeolian sandy soil by polypropylene fibers |
| CN104073956A (en) * | 2014-07-17 | 2014-10-01 | 宏祥新材料股份有限公司 | Flame-retardant reinforced woven geotextile and manufacturing technology thereof |
| CN106639477A (en) * | 2017-01-22 | 2017-05-10 | 武汉大学 | Built-in damping beam member with anti-seismic and self-healing performance |
| CN107366273A (en) * | 2017-07-19 | 2017-11-21 | 纤科工业（珠海）有限公司 | A kind of durable reinforcement filter screen and preparation method thereof |
| CN108914352A (en) * | 2018-06-13 | 2018-11-30 | 无锡恒诺纺织科技有限公司 | A kind of production technology of degradable polyester knitting Weft Knitted Shell Fabric |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2363878Y (en) * | 1998-12-29 | 2000-02-16 | 浙江锦达土工合成材料有限公司 | Warp-knitted composite geotextile |
| CN2423296Y (en) * | 2000-06-12 | 2001-03-14 | 江苏九鼎集团股份有限公司 | Fiberglass composite geotextile |
| CN1515711A (en) * | 2003-01-08 | 2004-07-28 | 中国科学院化学研究所 | High-strength polypropylene fibre and its production method |
| CN2761679Y (en) * | 2004-12-27 | 2006-03-01 | 深圳市海川实业股份有限公司 | Grid composite geotext ile |
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2008
- 2008-12-29 CN CN200810154643.6A patent/CN101768808B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011394A (en) * | 2010-11-12 | 2011-04-13 | 赵莹莹 | Method for reinforcing aeolian sandy soil by polypropylene fibers |
| CN104073956A (en) * | 2014-07-17 | 2014-10-01 | 宏祥新材料股份有限公司 | Flame-retardant reinforced woven geotextile and manufacturing technology thereof |
| CN104073956B (en) * | 2014-07-17 | 2016-05-25 | 宏祥新材料股份有限公司 | Fire-retardant reinforcement woven geotextile and manufacturing process thereof |
| CN106639477A (en) * | 2017-01-22 | 2017-05-10 | 武汉大学 | Built-in damping beam member with anti-seismic and self-healing performance |
| CN107366273A (en) * | 2017-07-19 | 2017-11-21 | 纤科工业（珠海）有限公司 | A kind of durable reinforcement filter screen and preparation method thereof |
| CN108914352A (en) * | 2018-06-13 | 2018-11-30 | 无锡恒诺纺织科技有限公司 | A kind of production technology of degradable polyester knitting Weft Knitted Shell Fabric |
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| CN101768808B (en) | 2013-07-24 |
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