CN202742767U - Double-sided self-adhesive composite geomembrane - Google Patents

Double-sided self-adhesive composite geomembrane Download PDF

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Publication number
CN202742767U
CN202742767U CN 201220471963 CN201220471963U CN202742767U CN 202742767 U CN202742767 U CN 202742767U CN 201220471963 CN201220471963 CN 201220471963 CN 201220471963 U CN201220471963 U CN 201220471963U CN 202742767 U CN202742767 U CN 202742767U
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China
Prior art keywords
self
layer
adhesive
geomembrane
membrane
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Expired - Fee Related
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CN 201220471963
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Chinese (zh)
Inventor
孙彦伟
张书言
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TANGSHAN DESHENG WATERPROOF CO Ltd
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TANGSHAN DESHENG WATERPROOF CO Ltd
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Abstract

The utility model discloses a waterproof membrane, in particular relates to a double-sided self-adhesive composite geomembrane. The geomembrane has a layered structure, and comprises a waterproof layer, a self-adhesive layer, a blocking layer and an isolating layer, wherein the geomembrane having the layered structure sequentially comprises an upper isolating layer, an upper self-adhesive layer, an upper blocking layer, a waterproof layer, a lower blocking layer, a lower self-adhesive layer and a lower isolating layer from top to bottom; and the multiple layered structures are compounded into a whole. Double sides of the geomembrane are adhered with cement mortar, and the problems of hollowing, stripping, water channeling and the like in the prior art are completely solved; the blocking layer can prevent solvent molecules in the self-adhesive layer from dispersing in the waterproof layer, the tensile strength and elongation rate of the waterproof layer caused by swelling are prevented from being reduced, and ageing is delayed; the overlap side is adhesion between the self-adhesive layers, the adhesion is firm, and water seepage is avoided; the geomembrane is excellent in self-healing properties and creep resistance and is penetration-resistant; a wet laying method is adopted during construction, open fire is not used, the operation is simple and convenient, and a good waterproof effect is achieved due to multi-layer seepage prevention.

Description

The double-sided self-adhesive composite geo-membrane
Technical field
The utility model relates to a kind of waterproof material, especially relates to a kind of novel two-sided self-adhesion composite geo-membrane.
Background technology
Along with economic fast development, the effects such as antiseepage, protection, reinforcing are mainly played in many fields such as geomembrane is widely used in the water conservancy dykes and dams, builds the road, airport, draining, house, environmental protection in engineering.But because geomembrane is a kind of flexible material, thinner thickness, in work progress, easy impaired breaking, also easily punctured by the hard thing of projection in concrete while being laid immediately on concrete, and waterproof effect is poor, easily seepage, hollowing, channeling water etc.Simultaneously, overlap edge adopts sweat soldering, and disaster hidden-trouble is large, the constructing operation personnel is required high, during construction, because hot melt is inadequate, causes holding overlap joint not firm, is easy to occur the overlap edge cracking, seepage occurs.Have a strong impact on construction quality, the later stage engineering maintenance is difficulty also, and cost is high.Chinese patent 02278169.2 and the compound geomembrane of 200920089007.3 described novel self have solved above-mentioned technical barrier, but also have the following disadvantages: because diffusion easily occurs the small solvent molecule in self-adhesive, in impervious barrier, swelling can occur after the lyosoption molecule in polymer substance, cause geomembrane hot strength and percentage elongation to descend, accelerate that it is aging; Simultaneously, composite geo-membrane all only has one side to smear self-adhesive, with cement mortar, realizes full bondingly, and another side is only anti-puncture layer, can't realize full bondingly with cement mortar, easily peels off, hollowing, and waterproof safety hidden danger is very large.During the construction overlap joint, the self-adhesive of lower floor and the watertight composition on upper strata are overlapped by the mode of " tacky film ", easily seep water.
Summary of the invention
Goal of the invention of the present utility model is to descend for prior art hot strength and percentage elongation, easily aging; Can't realize full bondingly with cement mortar, easily peel off, the problem such as hollowing, a kind of high strength, the high extension are provided, prevent aging, long service life, avoid that hollowing occurs, peel off, the double-sided self-adhesive composite geo-membrane of channeling water phenomenon.
Realize that above-mentioned purpose by the following technical solutions: a kind of double-sided self-adhesive composite geo-membrane, described geomembrane is layer structure, comprise watertight composition, self-adhesive layer, barrier layer, separation layer, the basipetal distributing order of the geomembrane of layer structure is: upper separation layer, upper self-adhesive layer, upper barrier layer, watertight composition, lower barrier layer, lower self-adhesive layer, lower separation layer, multilayer stratiform structure composite is integrated.
Described geomembrane is seven-layer structure.
Described watertight composition is a kind of in polyethylene or polyvinyl chloride or ethylene/vinyl acetate copolymer waterproof membrane.
Described waterproofing layer thickness is 0.8-1.5mm.
Described upper and lower barrier layer is the seven-layer co-extrusion rete.
Described upper and lower barrier layer thickness is respectively 0.04-0.3mm.
Described upper and lower self-adhesive layer is the polymer modified asphalt self-adhesion mixing bed of material.
Described upper and lower self-adhesive layer thickness is respectively 0.6-1.0mm.
Described upper and lower separation layer is aluminium plating membrane.
Described upper and lower separation layer thickness is respectively 0.03-0. 1mm.
Compared with prior art, the utility model is at the compound upper and lower barrier layer of the both sides up and down of watertight composition difference; Evenly smear upper and lower self-adhesive layer on the upper and lower barrier layer of the main water barrier above and below after compound; Upper and lower self-adhesive layer both sides are corresponding respectively
The compound upper and lower separation layer shielded forms the double-sided self-adhesive composite geo-membrane.
Its significant advantage is:
1, the cement mortar of double-sided self-adhesive layer and upper and lower surface has all realized full bonding, bonding firmly, avoided the generation hollowing, peeled off, the phenomenon such as channeling water.
2, barrier layer can stop air, solvent molecule to enter in main water barrier, has kept the original high strength of main waterproof roll, the high extension, prevents agingly, increases the service life.
3, overlap edge adopts " gluing glue " overlapping mode, bonding tight, firm, has effectively prevented because of the not firm infiltration phenomenon that causes of overlap joint.
4, the polymer modified asphalt self-adhesive layer has excellent self-healing, creep properties, and anti-puncture has been avoided destroying because of sharp object the infiltration phenomenon caused.
5, construction is for the cold bonding method, operates simple and easyly, convenient, to workmen's specification requirement, is not very high, the infiltration phenomenon of having avoided human factor to cause.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, upper separation layer 1, upper self-adhesive layer 2, upper barrier layer 3, watertight composition 4, lower barrier layer 5, lower self-adhesive layer 6, lower separation layer 7.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described .
The present embodiment is a kind of double-sided self-adhesive composite geo-membrane, and this geomembrane is seven-layer structure, and thickness is 1.4-5mm.Basipetal distributing order is: upper separation layer 1, upper self-adhesive layer 2, upper barrier layer 3, watertight composition 4, lower barrier layer 5, lower self-adhesive layer 6, lower separation layer 7.
Watertight composition 4 is for the blend compositions such as ldpe resin and light stabilizer process, and is a kind of in polyethylene or polyvinyl chloride or ethylene/vinyl acetate copolymer waterproof membrane.The present embodiment is selected the polyethylene film that thickness is 0.8-1.5mm.
Upper and lower barrier layer 3,5 is the seven-layer co-extrusion rete.The thickness of upper and lower barrier layer is respectively 0.04-0.3mm.
Upper and lower self-adhesive layer 2,6 is SBS, Petropols and the polymer modified asphalt mixing bed of materials such as rubber, and thickness is respectively 0.6-1.0mm.
Upper and lower separation layer the 1, the 7th, aluminium plating membrane.Thickness is respectively 0.03-0. 1mm.
Preparation method of the present utility model:
As shown in Figure 1, the compound upper barrier layer 3 of the top difference of watertight composition 4, below compound lower barrier layer 5, evenly smear lower self-adhesive layer 6 below the main water barrier 4 after compound, above evenly be coated with and spread self-adhesive layer 2.The top of main water barrier 4 after compound evenly is coated with and spreads separation layer 1 again, and watertight composition 4 following evenly smeared lower separation layer 7 again.
During construction, can adopt wet paving method, full bonding with basal plane, and overlap edge is self-adhesive layer glue and gluing connecing, and constructs bonding firm, avoids occurring the problems such as hollowing, infiltration, channeling water.

Claims (10)

1. a double-sided self-adhesive composite geo-membrane, described geomembrane is layer structure, comprise watertight composition, self-adhesive layer, barrier layer, separation layer, it is characterized in that, the basipetal distributing order of the geomembrane of layer structure is: upper separation layer, upper self-adhesive layer, upper barrier layer, watertight composition, lower barrier layer, lower self-adhesive layer, lower separation layer, multilayer stratiform structure composite is integrated.
2. double-sided self-adhesive composite geo-membrane according to claim 1, is characterized in that, described geomembrane is seven-layer structure.
3. double-sided self-adhesive composite geo-membrane according to claim 1, is characterized in that, described watertight composition is a kind of in polyethylene or polyvinyl chloride or ethylene/vinyl acetate copolymer waterproof membrane.
4. according to the described double-sided self-adhesive composite geo-membrane of claim 1 or 3, it is characterized in that, described waterproofing layer thickness is 0.8-1.5mm.
5. double-sided self-adhesive composite geo-membrane according to claim 1, is characterized in that, described upper and lower barrier layer is the seven-layer co-extrusion rete.
6. a kind of self-adhesion composite geo-membrane according to claim 1 or 5, is characterized in that, described upper and lower barrier layer thickness is respectively 0.04-0.3mm.
7. a kind of self-adhesion composite geo-membrane according to claim 1, is characterized in that, described upper and lower self-adhesive layer is the polymer modified asphalt self-adhesion mixing bed of material.
8. according to the described a kind of self-adhesion composite geo-membrane of claim 1 or 7, it is characterized in that, described upper and lower self-adhesive layer thickness is respectively 0.6-1.0mm.
9. a kind of self-adhesion composite geo-membrane according to claim 1, is characterized in that, described upper and lower separation layer is aluminium plating membrane.
10. according to the described a kind of self-adhesion composite geo-membrane of claim 1 or 9, it is characterized in that, described upper and lower separation layer thickness is respectively 0.03-0. 1mm.
CN 201220471963 2012-09-17 2012-09-17 Double-sided self-adhesive composite geomembrane Expired - Fee Related CN202742767U (en)

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CN 201220471963 CN202742767U (en) 2012-09-17 2012-09-17 Double-sided self-adhesive composite geomembrane

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005428A (en) * 2013-02-25 2014-08-27 江苏金霸环境技术股份有限公司 Smooth geomembrane
CN114134941A (en) * 2020-09-04 2022-03-04 必照岩土科技(南京)有限公司 Engineering optimization method for horizontal barrier and organic gas corrosion resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005428A (en) * 2013-02-25 2014-08-27 江苏金霸环境技术股份有限公司 Smooth geomembrane
CN114134941A (en) * 2020-09-04 2022-03-04 必照岩土科技(南京)有限公司 Engineering optimization method for horizontal barrier and organic gas corrosion resistance

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130220

Termination date: 20180917