CN215283813U - Composite elastic seepage-proof base plate - Google Patents
Composite elastic seepage-proof base plate Download PDFInfo
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- CN215283813U CN215283813U CN202121491658.9U CN202121491658U CN215283813U CN 215283813 U CN215283813 U CN 215283813U CN 202121491658 U CN202121491658 U CN 202121491658U CN 215283813 U CN215283813 U CN 215283813U
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Abstract
The utility model discloses a composite elastic seepage-proofing backing plate, belonging to the technical field of hydraulic construction engineering materials, comprising a HDPE seepage-proofing film, wherein the surfaces of two sides of the HDPE seepage-proofing film are compounded with non-woven fabric protective layers, and the surface of the non-woven fabric protective layer positioned on the upstream surface is adhered with a rubber-plastic elastomer coiled material; the HDPE seepage-proofing film is used as a seepage-proofing main body layer, the two sides of the HDPE seepage-proofing film are compounded with non-woven fabrics to be used as protective layers, then a rubber-plastic elastomer coiled material is bonded on the non-woven fabric protective layer positioned on the upstream surface through an adhesive, the characteristics of certain elasticity and good wear resistance of the rubber-plastic elastomer coiled material are utilized, the impact strength and the friction resistance can be greatly improved, then stones and sands can be directly paved on the surface of the rubber-plastic elastomer coiled material, the composite elastic seepage-proofing base plate is directly paved on the surface of a roadbed, and a sleeper is paved on the surface of the rubber-plastic elastomer coiled material of the composite elastic seepage-proofing base plate.
Description
Technical Field
The utility model relates to a hydraulic construction engineering material class technical field especially relates to a compound elasticity prevention of seepage backing plate.
Background
The water prevention and drainage of the roadbed of the railway or the highway are important to the service life and the safety of the railway or the highway, especially in a water-soaked road section, if the water prevention of the water-soaked road section is not good, the roadbed is wet and the slope toe is hollowed under the action of washing, etching, softening and the like of water flow for a long time, so that fine particles in roadbed fillers are lost, and the safety problems of instability, slope collapse and the like of the roadbed are caused. The composite impermeable membrane is an impermeable material widely used for roadbed waterproofing in China in recent years, the existing composite impermeable membrane is a composite membrane of non-woven fabrics, polyethylene films and non-woven fabrics, the composite membrane is called two-cloth one-membrane, the polyethylene film with good waterproofness is used as an impermeable main body, and the non-woven fabrics on two sides are used for forming protection for the middle polyethylene film. However, the composite impermeable membrane has a good waterproof effect but has a poor impact resistance, although the nonwoven fabric has good wear resistance, the strength of the nonwoven fabric is poor, and the composite impermeable membrane is difficult to bear large load and meet the requirement of high impermeable strength.
For improving the not enough problem of tensile strength of compound prevention of seepage membrane, the utility model patent of "CN 00241523.2", the name is "a high strength ternary compound prevention of seepage membrane" has proposed a compound prevention of seepage membrane that intensity is high in the utility model patent, trades the non-woven fabrics of polyethylene film one side in the compound prevention of seepage membrane of tradition into high strength geotechnological cloth, utilizes the high tensile strength of high strength geotechnological cloth in order to improve compound prevention of seepage membrane holistic shock resistance. However, the composite impermeable membrane still has a plurality of problems because the high-strength woven fabric has poor wear resistance although good tensile property, and cannot be directly paved with stones, sands and the like, and the stones and the sands can quickly wear the high-strength geotextile, and then wear the middle polyethylene membrane, so that the composite impermeable membrane loses the waterproof function.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem, the utility model provides a compound elasticity prevention of seepage backing plate is provided, HDPE prevention of seepage membrane is as prevention of seepage main part layer, its both sides complex has the non-woven fabrics as the inoxidizing coating, then there is the rubber and plastic elastomer coiled material at the non-woven fabrics protective layer that is located the upstream face through the adhesive bonding, utilize the rubber and plastic elastomer coiled material to have certain elasticity and the good characteristics of wear resistance, can improve impact strength and anti friction intensity by a wide margin, then can directly lay the stone on rubber and plastic elastomer coiled material face, the sand, and directly lay compound elasticity prevention of seepage backing plate on the road bed, lay the sleeper on compound elasticity prevention of seepage backing plate surface.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a compound elasticity prevention of seepage backing plate, including HDPE prevention of seepage membrane, HDPE prevention of seepage membrane's both sides surface recombination has the non-woven fabrics protective layer, is located the upstream face the non-woven fabrics protective layer adhere on the surface have rubber and plastic elastomer coiled material.
Preferably, the HDPE impermeable membrane is formed by blow molding of high-density polyethylene resin added with an anti-aging auxiliary agent, an abrasion-resistant material and a low-temperature resistant auxiliary agent.
Preferably, the thickness of the HDPE impervious film is 0.2-2 mm.
Preferably, the non-woven fabric protective layer is a long fiber non-woven fabric.
Preferably, theThe thickness of the non-woven fabric protective layer is 2-8 mm, and the gram weight of the non-woven fabric protective layer is 200-800 g/m2。
Preferably, the rubber-plastic elastomer coiled material is adhered to the surface of the non-woven fabric protective layer on the back water surface.
Preferably, the thicknesses of the rubber-plastic elastomer coiled materials on the upstream surface and the downstream surface are both 0.2-2 mm.
Preferably, the non-woven fabric protective layer is bonded with the rubber-plastic elastomer coiled material through a special high-molecular adhesive.
Preferably, a civil engineering grille is compounded on the surface of the non-woven fabric protective layer positioned on the back water surface.
Preferably, the width of the HDPE impermeable film is 1000-6000 mm.
The utility model discloses for prior art gain following technological effect:
1, the HDPE impermeable film is used as an impermeable main body of the composite elastic impermeable backing plate, and the two sides of the HDPE impermeable film are compounded with non-woven fabric protective layers so as to improve the wear resistance of the HDPE impermeable main body and reduce the risk of abrasion of the HDPE impermeable film in the production, transportation, construction and use processes; the rubber-plastic elastomer coiled material is bonded on the surface of the non-woven fabric protective layer positioned on the upstream surface, has certain elasticity and good wear resistance, and also has certain seepage resistance, so that not only can a protective layer with elasticity and wear resistance be formed, but also an auxiliary layer for assisting seepage resistance is formed. The composite elastic seepage-proofing base plate has strong wear resistance and impact resistance, so that stones, sand and the like can be directly paved on the composite elastic seepage-proofing base plate, and even the composite elastic seepage-proofing base plate is directly applied to the surface of a roadbed, and sleepers are directly paved on the surface of the rubber-plastic elastomer coiled material.
2, the HDPE impermeable membrane is formed by blow molding high-density polyethylene resin, an anti-aging auxiliary agent, a wear-resistant material and a low-temperature resistant auxiliary agent are added into the HDPE impermeable membrane, the anti-aging auxiliary agent can obviously improve the service durability of the HDPE impermeable membrane, and the HDPE impermeable membrane added with the low-temperature resistant auxiliary agent enables the composite elastic impermeable backing plate to be applied to low-temperature environments such as frozen soil roadbed and the like.
3. The rubber-plastic elastomer coiled material is adhered to the surface of the non-woven fabric protective layer positioned on the back surface, so that the back surface of the composite elastic anti-seepage base plate is protected, and the impact strength of the composite elastic anti-seepage base plate is integrally improved.
4. The surface of the non-woven fabric protective layer positioned on the back water surface can be compounded with a civil grille which is used as a reinforcing rib of the composite elastic anti-seepage cushion plate, so that the bearing capacity of the composite elastic anti-seepage cushion plate can be obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a structural schematic diagram of the composite elastic impermeable backing plate.
Description of reference numerals: 1. an HDPE barrier film; 2. a non-woven fabric protective layer; 3. a special high-molecular adhesive; 4. rubber and plastic elastomer coiled material.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment provides a compound elasticity prevention of seepage backing plate, as shown in fig. 1, including HDPE prevention of seepage membrane 1, HDPE prevention of seepage membrane 1's both sides surface recombination has non-woven fabrics protective layer 2, non-woven fabrics protective layer 2 gives HDPE prevention of seepage membrane 1 protection, improves its wearability, avoids HDPE prevention of seepage membrane 1 wearing and tearing to appear, and the non-woven fabrics protective layer 2 that is located the upstream face has the elastomer rubber and plastic coiled material 4 in the bonding on the surface, and rubber and plastic elastomer coiled material 4 can improve compound elasticity prevention of seepage backing plate's shock resistance and tensile strength by a wide margin. When the composite elastic anti-seepage base plate is used as a roadbed waterproof material, because the composite elastic anti-seepage base plate has good wear resistance and impact resistance, stones, sand and the like can be directly paved on the surface of the rubber-plastic elastomer coiled material 4, even the composite elastic anti-seepage base plate can be directly paved on the surface of a roadbed, and then a sleeper is paved on the surface of the rubber-plastic elastomer coiled material 4 of the composite elastic anti-seepage base plate.
Further, in this embodiment, the HDPE impermeable membrane 1 is prepared by subjecting the high-density polyethylene resin to tubular blow molding and sheet calendering, and an anti-aging aid, an abrasion-resistant material, a low-temperature-resistant aid, and the like are added to the high-density polyethylene resin, wherein the anti-aging aid may be an additive such as carbon black, and the abrasion-resistant material may be titanium oxide. The high-density polyethylene resin has good waterproofness, has better acid resistance, alkali resistance, corrosion resistance and other durability after being added with the anti-aging agent, the wear-resistant material and the low-temperature resistant auxiliary agent, can obviously prolong the service life of the HDPE anti-seepage film 1, and enables the composite elastic anti-seepage base plate to be applied to frozen soil roadbed and other low-temperature environments due to the low-temperature resistant auxiliary agent.
Further, in the present embodiment, the thickness of the HDPE impermeable membrane 1 is controlled to be 0.2 to 2 mm.
In this embodiment, the non-woven fabric protective layer 2 is made of long fiber non-woven fabric, and the long fiber non-woven fabric is made of polyester or polypropylene by high-temperature high-pressure spinning and needling. The preferable high temperature is 220-300 ℃, the high pressure is 0.6-2.4 MPa air pressure, and the prepared long fiber non-woven fabric has the characteristics of softness, air permeability and good wear resistance, is low in manufacturing cost, and meets the requirement of paving a roadbed in a large area.
Further, in the present embodiment, the thickness of the non-woven fabric protective layer 2 is 2 to 8mm, and the gram weight of the non-woven fabric protective layer 2 is 200 to 800g/m2。
In this embodiment, the rubber-plastic elastomer coiled material 4 is also bonded on the surface of the non-woven fabric protective layer 2 on the back surface to protect the non-woven fabric protective layer 2 on the back surface of the composite elastic anti-seepage cushion plate, so as to improve the strength of the composite elastic anti-seepage cushion plate as a whole and further improve the anti-seepage effect.
Further, in this embodiment, the thicknesses of the rubber-plastic elastomer coiled materials 4 located on the upstream surface and the downstream surface are both 0.2-2 mm. The rubber-plastic elastomer coiled material 4 is generally obtained by mixing natural rubber or synthetic rubber with polyvinyl chloride in a certain proportion, and carrying out banburying, scouring, calendering and other processes, and the rubber-plastic elastomer coiled material 4 can be added with an anti-aging auxiliary agent (such as carbon black), an abrasion-resistant material (such as titanium oxide), a low-temperature-resistant auxiliary agent and the like according to actual needs. Preferably, the rubber-plastic elastomer coiled material 4 is prepared by mixing 10-90% of polyvinyl chloride with butadiene styrene or butadiene acrylonitrile synthetic rubber, adding at least 2% of an anti-aging additive such as carbon black, at least 1% of a wear-resistant material such as titanium oxide, and 1-10% of a low-temperature resistant additive such as chlorinated polyethylene or polyvinyl chloride.
In this embodiment, as shown in fig. 1, the non-woven fabric protective layer 2 is bonded to the rubber-plastic elastic body coiled material 4 by a special polymer adhesive 3. After the HDPE impermeable membrane 1 is thermally combined with the non-woven fabric protective layer 2 through thermal compounding, the special high-molecular adhesive 3 is firstly coated on a roller through a rolling method, then the special high-molecular adhesive 3 is transferred onto the rubber-plastic elastomer coiled material 4, and finally the special high-molecular adhesive is bonded with the non-woven fabric protective layer 2 to form the composite elastic impermeable backing plate.
In order to further improve the overall strength of the composite elastic impermeable backing plate, in the embodiment, a layer of civil engineering grating is compounded on the surface of the non-woven fabric protective layer 2 positioned on the back water surface. The civil grille is used as a reinforced material, has the characteristics of high tensile strength, small extension force, large tear strength, small difference of longitudinal and transverse strength, ultraviolet aging resistance, wear resistance and corrosion resistance, and can enhance the shearing resistance and the reinforcement of the composite elastic seepage-proofing base plate and improve the integrity and the bearing capacity of the composite elastic seepage-proofing base plate.
In the embodiment, the width of the HDPE impermeable film 1 is 1000-6000 mm, and the width of the matched rubber-plastic elastomer coiled material 4 is also 1000-6000 mm. The composite elastic seepage-proofing base plate is not easy to be too wide in width and is not easy to lay.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a compound elasticity prevention of seepage backing plate, its characterized in that includes HDPE prevention of seepage membrane, HDPE prevention of seepage membrane's both sides surface recombination has the non-woven fabrics protective layer, is located the upstream face the non-woven fabrics protective layer's the surperficial bonding has the rubber and plastic elastomer coiled material.
2. The composite elastic barrier liner as claimed in claim 1, wherein the HDPE barrier film has a thickness of 0.2-2 mm.
3. The composite elastic impermeable backing plate according to claim 1, characterized in that the non-woven protective layer is a long fiber non-woven.
4. The composite elastic seepage-proofing base plate according to claim 3, wherein the thickness of the non-woven fabric protective layer is 2-8 mm, and the gram weight of the non-woven fabric protective layer is 200-800 g/m2。
5. The composite elastic impermeable backing plate according to claim 1, characterized in that the rubber-plastic elastomer coiled material is bonded on the surface of the non-woven fabric protective layer on the back surface.
6. The composite elastic seepage-proofing base plate according to claim 5, wherein the thicknesses of the rubber-plastic elastomer coiled materials on the upstream surface and the downstream surface are both 0.2-2 mm.
7. The composite elastic seepage-proofing liner plate as claimed in claim 6, wherein the non-woven fabric protective layer is bonded with the rubber-plastic elastomer coiled material through a special high-molecular adhesive.
8. The composite elastic impermeable backing plate according to claim 1, characterized in that geogrid is compounded on the surface of the non-woven fabric protective layer on the back surface.
9. The composite elastic impermeable backing plate according to claim 1, characterized in that the HDPE impermeable film has a width of 1000-6000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121491658.9U CN215283813U (en) | 2021-07-01 | 2021-07-01 | Composite elastic seepage-proof base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121491658.9U CN215283813U (en) | 2021-07-01 | 2021-07-01 | Composite elastic seepage-proof base plate |
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| Publication Number | Publication Date |
|---|---|
| CN215283813U true CN215283813U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121491658.9U Active CN215283813U (en) | 2021-07-01 | 2021-07-01 | Composite elastic seepage-proof base plate |
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| Country | Link |
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| CN (1) | CN215283813U (en) |
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- 2021-07-01 CN CN202121491658.9U patent/CN215283813U/en active Active
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