CN205238732U - Sodium -based bentonite waterproof carpet - Google Patents
Sodium -based bentonite waterproof carpet Download PDFInfo
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- CN205238732U CN205238732U CN201520917372.0U CN201520917372U CN205238732U CN 205238732 U CN205238732 U CN 205238732U CN 201520917372 U CN201520917372 U CN 201520917372U CN 205238732 U CN205238732 U CN 205238732U
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- sodium
- bentonite
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- plastic flat
- geotechnological cloth
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Abstract
The utility model belongs to the building material field specifically, relates to a sodium -based bentonite waterproof carpet for the water ecosystem protection is with the restoration and construct waterproofly. Sodium -based bentonite waterproof carpet includes: the non -woven geotechnological cloth of bottom, middle sodium bentonite layer and the plastic flat filament on top layer weave geotechnological cloth, the sodium bentonite layer fix through the needle point method non -woven geotechnological cloth and plastic flat filament weave between the geotechnological cloth. The utility model discloses a sodium -based bentonite waterproof carpet belongs to green waterproof material in can being applied to multiple complicacy, abominable quality of water environmental engineering, whole dimensional stability and mechanical strength strengthen greatly, the sodium bentonite layer has fully aroused the performance potentiality of bentonite, and the high expansion character sodium bentonite of gained dispersibility in aqueous is good, and mud colloid performance is good, plastic flat filament weaves geotechnological cloth and has good prevention of seepage effect, is favorable to the assurance of engineering quality, and performance parameter is stable.
Description
Technical field
The utility model belongs to building material field, particularly, relate to a kind of sodium-based bentonite waterproof carpet andPreparation method, for aquatic ecosystem protection and reparation and buildings waterproof.
Background technology
Sodium-based bentonite waterproof carpet is the flexible geosynthetics of a kind of novel environment friendly, is called for short GCL, can be applicable toThe soil of the waterproof such as artificial lake's water scenery, refuse landfill, underground garage, pond, oil depot and chemicals stockyardGeosynthetics; It is widely used and promotes at China construction industry, except having stronger water proofing propertyOutside energy, also there is low temperature flexibility, freeze-thawing resistant circulation, self-enclosed, anti-differential settlement, construct simple etc.Typicalness feature.
Application at present more widely sodium-based bentonite waterproof carpet is that sodium bentonite particle or powder are passed through to pinThorn, the technique such as gluing, be evenly fixed between two-layer geotextiles or be bonded at and make on high density polyethylene (HDPE) plateA kind of novel blanket shape waterproof material. The sodium bentonite that its internal main will play impermeable role is flat crystalStructure, each layer separated by very small thin layer and water molecule layer, and sodium ion is positioned at the surface of each layer, whenWhile contact with extraneous hydrone, hydrone is just attracted on thin layer, in the time that Molecular Adsorption mixing stops, swollenProfit soil forms a kind of stable colloid. In recent years, along with agricultural production and social development, water pollutes increasinglySeriously, the water quality environment that causes some underground waterproof engineering to be closed on is quite complicated, and due to the chemistry in sewageThe sodium bentonite particle of material and waterproof blanket inside carries out chemical reaction, when the cation in pollutant and swollenSodium ion generation ion-exchange reactions between profit soil layer displaces the sodium ion of interlayer, and sodium bentonite is lostDue characteristic. Therefore existing common sodium-based bentonite waterproof carpet can not be sent out in complicated water quality environmentWave good waterproof effect. Particularly in the water-proofing treatment of ground water engineering, normal in contaminated underground waterOften contain nitrate, phosphate, chloride, sulfate, carbonate and other organic solvents of high concentration,And the water-quality constituents complexity of the underground water of different regions, changeable, develops a kind of resistant to pollution sodium bentoniteWaterproof blanket becomes technical staff's the task of top priority.
Utility model content
For solving prior art existing defect, the utility model provide a kind of sodium-based bentonite waterproof carpet andIts preparation method; Be applied to the inapplicable water contamination type of existing sodium-based bentonite waterproof carpet engineering waterproofing, and suitableBe applied in Various Complex, severe water quality environment engineering, this waterproof blanket is environmental protection waterproof material.
For achieving the above object, the technical solution adopted in the utility model is as follows:
Sodium-based bentonite waterproof carpet, comprising: the non-woven geotextile of bottom, middle sodium bentonite layer andThe plastic flat wire braided geotextiles on top layer, described sodium bentonite layer is fixed on described non-by needle point methodWeave between geotextiles and plastic flat wire braided geotextiles.
The preparation method of above-mentioned sodium-based bentonite waterproof carpet, concrete steps are as follows:
1, cationic-type polyacrylamide and anion-polyacrylamide powder and sodium bentonite particle are filledDivide and be mixed to get sodium bentonite mixture;
2, the sodium bentonite mixture uniform spreading obtaining in step 1 is sprinkling upon on described non-woven geotextile,In the upper strata of described sodium bentonite mixture tiling plastic flat wire braided geotextiles, adopt needle point method by instituteThe sodium bentonite mixture of stating be fixed on described non-woven geotextile and plastic flat wire braided geotextiles itBetween, make waterproof blanket.
With respect to prior art, the beneficial effects of the utility model are as follows:
1, sodium-based bentonite waterproof carpet can be applicable to, in Various Complex, severe water quality environment engineering, belong to greenColour circle is protected waterproof material.
2, the overall dimensions stability of the non-woven geotextile of sodium-based bentonite waterproof carpet and mechanical strength (stretchIntensity, tearing resistance, bursting strength) greatly strengthen; Sodium bentonite layer has fully excited bentonitic performancePotentiality, the good dispersion of gained high-expansion energy sodium bentonite in water, mud colloidal property is good; PlasticsFlat filament braided geotextile has good anti-seepage effect, is conducive to the guarantee of construction quality, and performance parameter is stable.
3, sodium-based bentonite waterproof carpet preparation technology is simple, and production process is without discarded object and environmental pollution problem,And small investment, cost is low, instant effect, is easy to realize suitability for industrialized production.
Brief description of the drawings
Fig. 1 is the structural representation of sodium-based bentonite waterproof carpet;
In figure: 1, non-woven geotextile, 2, plastic flat wire braided geotextiles, 3, sodium bentonite layer, 4,Polymeric membrane.
Detailed description of the invention
As shown in Figure 1, sodium-based bentonite waterproof carpet, comprising: the non-woven geotextile 1 of bottom, middle sodiumThe plastic flat wire braided geotextiles 2 on base bentonite layer 3 and top layer, described sodium bentonite layer 3 is by acupunctureMethod is fixed between described non-woven geotextile 1 and plastic flat wire braided geotextiles 2.
Described non-woven geotextile comprises fleece, glass layer, the polypropylene nonwoven of stacked on top of one another successivelyLayer of cloth, passes through fiber opening, mixing, carding, lapping, makes the fiber on fleece through acupuncture modePin pierces through above-mentioned layers of material, hot air shaping and finished product and reels and make, and the temperature control of hot air shaping is lowIn 15～25 DEG C of fiber fusing points, the lower surface of described non-woven geotextile is provided with one deck HDPE film, and density is0.95-0.96kg/l, the lower surface of this HDPE film is provided with sinter layer, and this sinter layer is after processing through singingForm, to increase coefficient of friction, minimizing is skidded;
In described sodium bentonite layer, contain sodium bentonite particle, cationic-type polyacrylamide and cloudy fromThe mixture of subtype polyacrylamide; Described sodium bentonite particle is by sodium bentonite powder and sodium salt powderMaterial and urea powder utilize high-speed mixer evenly mixed, are heated to 90～100 DEG C, constant temperature 2～3 hours andThe high-expansion energy sodium bentonite obtaining, the addition of described sodium salt powder and urea powder is respectively sodium base3%～5% and 10%～15% of bentonite powder weight; Described sodium bentonite powder is by 100 partsThe carbon ammonium powder of sodium bentonite inferior and 1～3 part mixes and adds modification liquid, adopt spray granulation inAt 40～50 DEG C leave standstill 65～75min make carbon ammonium powder from volatilization and make 80～90 DEG C of oven dry, described in changeProperty liquid comprises the component of following weight portion: 1.5～2.5 parts of pore creating materials, 3.5～4.5 parts of scarvengers, anti-salt4～5 parts of modifier, deionized water are 50～70 parts;
The surface of plastic flat wire braided geotextiles is covered with polymeric membrane 4, and polymeric membrane is density polyethylene film with high,On its surface, be also provided with photocuring glue-line; Wherein, utilize polypropylene material to prepare thickness at 0.3～0.8mmFilm, then this film is split and is slit into the plastic flat fiber of width at 5～8mm, utilize this plastic flat wire braided to becomeThrough the geotextiles of broadwise, high density polyethylene (HDPE) is added to thermosetting fused solution shape by extruder, and drench geotechniqueOn cloth, make the high density polyethylene (HDPE) of fused solution shape stick to uniformly described geotextiles by beaming roller extruding calenderingUpper formation polymeric membrane, cools the geotextiles that is evenly stained with polymeric membrane, forms plastic flat fiber and compilesKnit geotextiles, photocuring glue-line is finally set in its surface;
The preparation method of above-mentioned sodium-based bentonite waterproof carpet, concrete grammar is as follows:
1, cationic-type polyacrylamide and anion-polyacrylamide powder and sodium bentonite particle are filledDivide and be mixed to get sodium bentonite mixture;
2, the sodium bentonite mixture uniform spreading obtaining in step 1 is sprinkling upon on described non-woven geotextile,In the upper strata of described sodium bentonite mixture tiling plastic flat wire braided geotextiles, adopt needle point method by instituteThe sodium bentonite mixture of stating be fixed on described non-woven geotextile and plastic flat wire braided geotextiles itBetween, make waterproof blanket.
The fibroreticulate fiber of described non-woven geotextile is terylene or polypropylene short fiber, non-woven geotechnique'sMass area ratio is 220g/m2。
Described sodium salt is sodium fluoride, and the moisture of described sodium bentonite powder is 10～15%, particle diameterBe less than 50～60 μ m, the expansion of described high-expansion energy sodium bentonite is doubly 50～60mL/g, described in makeHole agent is carbonic hydroammonium, and scarvenger is sodium carbonate, and anti-salt modifier is hydroxyethylcellulose.
Cationic-type polyacrylamide and anion-polyacrylamide described in described sodium bentonite layerWeight proportion be 1: 5, the mixture of cationic-type polyacrylamide and anion-polyacrylamide and instituteThe weight proportion of the sodium bentonite particle of stating is 3: 100; Every square metre of institute in described sodium bentonite layerContain the matter of the mixture of sodium bentonite particle, cationic-type polyacrylamide and anion-polyacrylamideAmount is 4kg.
Claims (3)
1. a sodium-based bentonite waterproof carpet, comprise: the non-woven geotextile of bottom, middle sodium bentonite layer and the plastic flat wire braided geotextiles on top layer, is characterized in that: described sodium bentonite layer is fixed between described non-woven geotextile and plastic flat wire braided geotextiles by needle point method; Described non-woven geotextile comprises fleece, glass layer, the polypropylene non-woven fabric layer of stacked on top of one another successively.
2. sodium-based bentonite waterproof carpet according to claim 1, is characterized in that: the surface of plastic flat wire braided geotextiles is covered with polymeric membrane, and polymeric membrane is density polyethylene film with high.
3. sodium-based bentonite waterproof carpet according to claim 2, is characterized in that: on polymeric membrane surface, be also provided with photocuring glue-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917372.0U CN205238732U (en) | 2015-11-17 | 2015-11-17 | Sodium -based bentonite waterproof carpet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520917372.0U CN205238732U (en) | 2015-11-17 | 2015-11-17 | Sodium -based bentonite waterproof carpet |
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| CN205238732U true CN205238732U (en) | 2016-05-18 |
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| CN201520917372.0U Expired - Fee Related CN205238732U (en) | 2015-11-17 | 2015-11-17 | Sodium -based bentonite waterproof carpet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285582A (en) * | 2017-08-03 | 2017-10-24 | 山东建筑大学 | The covering blanket and its laying method of a kind of in-situ immobilization heavy metal polluted bed mud |
| CN107445422A (en) * | 2017-08-03 | 2017-12-08 | 山东建筑大学 | A kind of pollution of river bed mud ecological restoring method |
-
2015
- 2015-11-17 CN CN201520917372.0U patent/CN205238732U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285582A (en) * | 2017-08-03 | 2017-10-24 | 山东建筑大学 | The covering blanket and its laying method of a kind of in-situ immobilization heavy metal polluted bed mud |
| CN107445422A (en) * | 2017-08-03 | 2017-12-08 | 山东建筑大学 | A kind of pollution of river bed mud ecological restoring method |
| CN107445422B (en) * | 2017-08-03 | 2020-10-23 | 山东建筑大学 | Ecological restoration method for river polluted bottom mud |
| CN107285582B (en) * | 2017-08-03 | 2020-11-24 | 山东建筑大学 | Covering blanket for in-situ remediation of heavy metal polluted bottom mud and laying method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160518 Termination date: 20161117 |