CN1384253A - Earthwork lattice of silane crosslinked stretch oriented high-strength polymer - Google Patents
Earthwork lattice of silane crosslinked stretch oriented high-strength polymer Download PDFInfo
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- CN1384253A CN1384253A CN 02113783 CN02113783A CN1384253A CN 1384253 A CN1384253 A CN 1384253A CN 02113783 CN02113783 CN 02113783 CN 02113783 A CN02113783 A CN 02113783A CN 1384253 A CN1384253 A CN 1384253A
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Abstract
The present invention relates to an earthwork lattice of silane crosslinked stretch oriented high-strength polymer. It includes longitudinal and transverse ribs and is characterized by that it has at least one layer of high-strength silane crosslinked polymer, produced with silane crosslinked polymer and through stretching, orientation, hydrolysis, condensation and crosslinking at wet and hot condition. It has high heat resistance, high antiaging performance, high strength of breaking, high creeping resistance, high tensile strength and long engineering life.
Description
Technical field:
What the present invention relates to is a kind of geo-grid, particularly be a kind of high-strength polymer geo-grid of stretch orientation of crosslinked with silicane.
Background technology:
Because crystalline high polymer after melt extruding into sheet material or grid more than the glassy state temperature, the following suitable temperature scope of viscous state temperature is through the stretch orientation of several times to 20 times, goods are produced be higher than the tensile strength of original not elongated article several times to ten times, people utilize this processing characteristics to produce various packing diaphragms, particularly produce the diaphragm that earthwork engineering uses and have vertical, the geotechnique of horizontal bar and pore structure uses grid, they are used for earthwork engineering, as river levee, hillside antiseepage landslide, mix the anti-landslide of lapicide's journey, the basis, soil is strengthened, highway, the reinforcement of railway basis waits and has obtained good effect and economic effect.Particularly the high-strength polymer geo-grid is as a kind of novel geotechnological material, widelyd popularize to be applied in the earthwork engineering and going, people have many inventions increasing the convex tendon raised line on the distribution in the vertical and horizontal rib of grid and hole, the rib and increase with the adhesion that increases grid and earth on the effect of grid.In order to increase the engineering life-span of grid, in polymer formulators, add antioxidant and carbon black prolongs aging life-span as: people.But geo-grid is used for earthwork engineering, what relate to is permanent work, be buried in the earthwork engineering after having the people of professional knowledge all to know these crystalline high polymer drawns, the general life-span has only 20 years to 70 years, and along with the prolongation of time, humidification in original engineering weakens year by year, finally completely loses.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, the high-strength polymer geo-grid of the stretch orientation of the long crosslinked with silicane of a kind of heat resistance, heat-resisting voltinism, hydrolysis aging, environmental stress crack resistance, cracking, creep-resistant property, tensile strength height, engineering life-span is provided.
High-strength polymer geo-grid of the present invention comprises vertical rib strip, transverse rod strip, and it is characterized in that having at least in the geo-grid one deck is the crosslinked with silicane high-strength polymer layer that the stretched orientation of silane-crosslinkable polymer is back, form through the hydrolytic condensation cross-linking reaction under wet heat condition again.
At least on the one side of above-mentioned vertical rib strip, transverse rod strip gaining in strength arranged and increase grid and the convex tendon bar of earth friction.
On the face vertical, have on the above-mentioned grid and gain in strength and the convex tendon bar of increase and earth friction with the draw direction of crosslinked with silicane high-strength polymer layer.
But there is one deck hot melt at least to be connected into the not crosslinked polymeric layer of bonding in the above-mentioned grid.
Above-mentioned geo-grid is to be formed by three layers of different polymeric material coextru-lamination, comprises crosslinked with silicane high-strength polymer layer, is positioned at the welding with it of crosslinked with silicane high-strength polymer layer above and below or the not crosslinked polymer layer of bonding.
Above-mentioned crosslinked with silicane high-strength polymer layer be by at least a polymeric material with contain organic silicon monomer, grafting initator, hydrolytic condensation catalyzer and cooperate and form.
Above-mentioned polymeric material is polyethylene (HDPE) or hard polyethylene (LDPE) or polypropylene (PP) or their copolymer or blend.
The high-strength polymer layer of the crosslinked with silicane in the above-mentioned grid is that the stretched back of silane-crosslinkable polymer forms through the hydrolytic condensation cross-linking reaction when engineering is used, under wet heat condition again.
Utilize polypropylene, after these crystallinity silane crosslinkable polymers of polyethylene are produced sheet material, punching has in length and breadth to rib and pore structure (also 90 ° of quadratures not necessarily certainly it on sheet material, and take the punching of oblique mode to make its rib with both direction and pore structure also is a kind of grid method that becomes), carry out monoway stretch-oriented to grid then or biaxial tension is directed, and then under certain wet heat condition to the condensation cross-linking reaction that is hydrolyzed of this grid, make it to become crosslinked high-strength polymer geo-grid, the key point of this technology is that silane-crosslinkable polymer is before the condensation cross-linking reaction that is not hydrolyzed, can be same as general crystalline high polymer, having stretch orientation equally makes macromolecular structure be two-dimensional structure, height is directed and produce the characteristic of high tensile strength along draw direction, the people who is familiar with this field knows, the high polymer of crosslinked shape has than not crosslinked high polymer of the same race better ageing resistace is arranged, this high-strength polymer geo-grid of utilizing crosslinkable polymer to produce crosslinked stretch orientation is not appeared in the newspapers, we produce geo-grid by this method, can only there be two-dimentional molecular structure to become tridimensional network former grid, have therefore improved the heat resistance of grid greatly, heat-resisting voltinism, the hydrolysis aging, environmental stress crack resistance, cracking, creep resistance etc.Ageing properties there is the performance of material impact, makes the engineering life-span of grid in earthwork engineering reach 50 years to 100 years, surpass the engineering life-span of the material that current material and PROCESS FOR TREATMENT obtain.These those skilled in the art know, also can penetrate crosslinked its two-dimensional structure that makes to change heat-resistant aging and other performance that three-dimensional structure improves grid into for elongated article with the high energy electron width of cloth, but the electronics width of cloth is penetrated the cost height, makes goods be unfavorable for applying, and does not have practicality.
Heat-resistingization of grid of the present invention, heat-resistant aging, hydrolysis aging, environmental stress crack resistance, cracking, creep resistance, tensile strength height, long service life.
Description of drawings:
Fig. 1 is the embodiment of the invention 1 figure.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the embodiment of the invention 2 figure.
Fig. 4 is the B-B sectional view of Fig. 3.
Fig. 5 is the embodiment of the invention 3 figure.
Fig. 6 is the C-C sectional view of Fig. 5.
Fig. 7 is the embodiment of the invention 4 figure.
Fig. 8 is the D-D sectional view of Fig. 7.
Fig. 9 is the embodiment of the invention 5 figure.
Figure 10 is the E-E sectional view of Fig. 9.
The specific embodiment:
Embodiment 1:
Fig. 1, Fig. 2 have provided present embodiment 1 figure.Comprise using polyethylene (HHPE) material, hard polyethylene (LDPE) material respectively and containing organic silicon monomer, grafting initator and hydrolytic condensation catalyzer and cooperate the crosslinked with silicane high-strength polymer layer 1,2 that under wet heat condition, forms through monoway stretch-oriented back through hydrolysis-condensation reaction.Transverse rod strip 3, vertical rib strip 4, hole 5 are arranged on the grid.
Embodiment 2:
Fig. 3, Fig. 4 have provided present embodiment 2 figure.Under wet heat condition, formed crosslinked with silicane high-strength polymer layer 6 after polypropylene (PP) the material process biaxial tension orientation through hydrolysis-condensation reaction.Porose 7 on it, transverse rod strip 8, vertical rib strip 9.Gaining in strength arranged on the one side of grid and increase grid and the convex tendon bar 10 of earth friction.
Embodiment 3:
Fig. 5, Fig. 6 have provided the embodiment of the invention 3 figure.Polyethylene, polypropylene or copolymer have formed through hydrolysis-condensation reaction under wet heat condition after through the biaxial tension orientation on the high-strength polymer layer 11 of crosslinked with silicane and have been compounded with not crosslinked thermal welding (or bonding) material layer 12.Porose 13 on it, transverse rod strip 14, vertical rib strip 15.Convex tendon bar 16 is arranged having on the grid on the position vertical with high-strength polymer layer stretch orientation direction.
Embodiment 4:
Fig. 7, Fig. 8 have provided the embodiment of the invention 4 figure.Polyethylene, hard polyethylene, polypropylene copolymer are porose 18 on the crosslinked with silicane high-strength polymer layer 17 that forms through hydrolysis-condensation reaction under the wet heat condition again after monoway stretch-oriented, transverse rod strip 19, vertical rib strip 20, the convex tendon bar 21 vertical with the stretch orientation direction.On the two sides of transverse rod strip, have gain in strength and with the convex tendon bar 22,23 of earth friction.
The hydrolysis-condensation reaction of present embodiment can carry out when engineering is used.
Embodiment 5:
Fig. 9, Figure 10 have provided the polymer geo-grid figure of the embodiment of the invention 5 biaxial tension orientations.The above and below of polyethylene, hard polyethylene, the crosslinked with silicane high-strength polymer layer 24 of polyacrylic blend through forming through hydrolysis-condensation reaction under wet heat condition again after the biaxial tension orientation is compounded with not crosslinked thermal welding (or bonding) articulamentum 25,26 respectively.Convex tendon bar 27 is arranged on the face of articulamentum 25.Porose 28 on the grid, transverse rod strip 29, vertical rib strip 30.
Claims (8)
1, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane, comprise vertical rib strip, transverse rod strip, it is characterized in that having at least in the geo-grid one deck is the crosslinked with silicane high-strength polymer layer that the stretched orientation of silane-crosslinkable polymer is back, form through the hydrolytic condensation cross-linking reaction under wet heat condition again.
2, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 1 is characterized in that on the one side at least of vertical rib strip, transverse rod strip gaining in strength being arranged and increases grid the convex tendon bar that rubs with earth.
3, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 1 and 2 is characterized in that having on the face vertical with the draw direction of crosslinked with silicane high-strength polymer layer on the grid and gains in strength and the convex tendon bar of increase and earth friction.
4, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 1 and 2, but it is characterized in that having in the grid the not crosslinked polymeric layer of one deck thermal welding at least or bonding.
5, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 4, it is characterized in that geo-grid is to be formed by three layers of different polymeric material coextru-lamination, comprise crosslinked with silicane high-strength polymer layer, be positioned at the welding with it of crosslinked with silicane high-strength polymer layer above and below or the not crosslinked polymer layer of bonding.
6, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 1 and 2, it is characterized in that crosslinked with silicane high-strength polymer layer be by at least a polymeric material with contain organic silicon monomer, grafting initator, hydrolytic condensation catalyzer and cooperate and form.
7, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 6 is characterized in that polymeric material is polyethylene or hard polyethylene or polypropylene or their copolymer or blend.
8, the high-strength polymer geo-grid of the stretch orientation of crosslinked with silicane according to claim 1 and 2, it is characterized in that the crosslinked with silicane high-strength polymer layer in the grid is that silane-crosslinkable polymer is stretched directed back when engineering is used, under wet heat condition, form through the hydrolytic condensation cross-linking reaction again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021137838A CN1158433C (en) | 2002-05-27 | 2002-05-27 | Earthwork lattice of silane crosslinked stretch oriented high-strength polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021137838A CN1158433C (en) | 2002-05-27 | 2002-05-27 | Earthwork lattice of silane crosslinked stretch oriented high-strength polymer |
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| Publication Number | Publication Date |
|---|---|
| CN1384253A true CN1384253A (en) | 2002-12-11 |
| CN1158433C CN1158433C (en) | 2004-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021137838A Expired - Fee Related CN1158433C (en) | 2002-05-27 | 2002-05-27 | Earthwork lattice of silane crosslinked stretch oriented high-strength polymer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413244B (en) * | 2008-11-17 | 2012-02-22 | 中国科学院地质与地球物理研究所 | Earth work grille for reinforcing highway foundation and its use method |
| CN104277297A (en) * | 2014-10-25 | 2015-01-14 | 安徽杰奥玛克合成材料科技有限公司 | Corrosion-resistant geogrid and preparation method thereof |
| CN118596625A (en) * | 2024-07-23 | 2024-09-06 | 泰安卧龙工程材料有限公司 | Polyethylene bidirectional geogrid and stretching method |
| CN118596625B (en) * | 2024-07-23 | 2024-11-08 | 泰安卧龙工程材料有限公司 | Polyethylene bidirectional geogrid and stretching method |
-
2002
- 2002-05-27 CN CNB021137838A patent/CN1158433C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413244B (en) * | 2008-11-17 | 2012-02-22 | 中国科学院地质与地球物理研究所 | Earth work grille for reinforcing highway foundation and its use method |
| CN104277297A (en) * | 2014-10-25 | 2015-01-14 | 安徽杰奥玛克合成材料科技有限公司 | Corrosion-resistant geogrid and preparation method thereof |
| CN118596625A (en) * | 2024-07-23 | 2024-09-06 | 泰安卧龙工程材料有限公司 | Polyethylene bidirectional geogrid and stretching method |
| CN118596625B (en) * | 2024-07-23 | 2024-11-08 | 泰安卧龙工程材料有限公司 | Polyethylene bidirectional geogrid and stretching method |
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| Publication number | Publication date |
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| CN1158433C (en) | 2004-07-21 |
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