CN102909921B - A kind of architectural waterproof material and preparation method thereof - Google Patents
A kind of architectural waterproof material and preparation method thereof Download PDFInfo
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- CN102909921B CN102909921B CN201210462323.3A CN201210462323A CN102909921B CN 102909921 B CN102909921 B CN 102909921B CN 201210462323 A CN201210462323 A CN 201210462323A CN 102909921 B CN102909921 B CN 102909921B
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Abstract
The invention provides a kind of architectural waterproof material, it comprises woven base material and casting films; Wherein, the flat filament braiding that woven base material is produced with the flat filament raw material comprising high density polyethylene (HDPE) (HDPE) and thermoplastic elastomer is formed; Casting films with low density polyethylene (LDPE) (LDPE) for primary raw material is formed, and casting films and woven base material compound.In the present invention, owing to the addition of thermoplastic elastomer in flat filament raw material, the woven base material of HDPE flat filament braiding, more a lot of by force than general HDPE film strength especially tearing toughness, more than 5-6 times can be reached; By arranging casting films and antiseepage film, making product of the present invention have better antiseep effect, extending service life simultaneously, making product of the present invention have higher cost performance.Invention also provides the method preparing above-mentioned architectural waterproof material.
Description
Technical field
The present invention relates to a kind of architectural waterproof material and preparation method thereof.
Background technology
Prior art has disclosed multiple anti-seepage geomembrane or the architectural waterproof material with antiseepage function.
Such as, Chinese patent 201020624171.9 discloses a kind of geomembrane, and it is made up of the first impervious barrier and the second impervious barrier, and the first impervious barrier and the second impervious barrier combine; Wherein, the first impervious barrier adopts high density polyethylene (HDPE) to make, and the second impervious barrier adopts LLDPE to make.
Chinese patent 201020270874.6 discloses a kind of anti-seepage geotextile, is mainly used in dam body seepage.It comprises nonwoven layer and plastic layer, and nonwoven layer and plastic layer are closely combined with each other, and wherein nonwoven layer is acupuncture nonwoven layer of cloth.
Chinese patent 200310112092.4 discloses the geomembrane that a kind of fiber braiding layer is strengthened, this film comprises rete and lower rete, upper rete and lower rete are same or unlike material, the sandwich layer identical or different with the material of upper rete and/or lower rete is accompanied in the middle of upper rete and lower rete, the geomembrane of this invention comprises one or more layers sandwich layer, and sandwich layer comprises at least one deck by the braid that weaves of the bidirectional crossed ground of fibrous material, the two sides of every layer of braid is other sandwich layer bonding or upper rete or lower rete respectively.This product is only applicable to agricultural and aquaculture aspect, for the architectural waterproof material market of extensive market, also has multi objective to fail to meet the demands, to a certain degree limits its application.
Chinese patent application 200910192703.8 discloses a kind of anti-seepage geomembrane and manufacture method thereof, the outside also laminating film be shaped having one deck to be bonded when being in melt state by casting films of the casting films of its sandwich layer side.This anti-seepage geomembrane, by when the casting films of its sandwich layer side curtain coating coating is in melt state, bonds film that another layer be shaped again and makes outside it.Obtained anti-seepage geomembrane, the rete of sandwich layer side is made up of the casting films of curtain coating and the film be shaped of combining closely outside it.
Chinese patent 200620164865.2 discloses a kind of water proof anti-seepage geomembrane, and it comprises geomembrane and tricot machine is weaved cotton cloth.It is weaved cotton cloth be composited by laying tricot machine between double-deck geomembrane.
The shortcoming of technique scheme is: the multiplex polypropylene of existing composite plastic woven product or polyethylene are raw material, drawn, braiding, curtain coating are composited, because it limit by raw material and production technology, although its intensity high (tension intensity, bursting strength etc.), but its percentage elongation is lower, generally below 30%.
Therefore, the high architectural waterproof material of a kind of percentage elongation how is provided to become the problem of industry needs solution.
Summary of the invention
An object of the present invention is to provide a kind of architectural waterproof material.
Another object of the present invention is to provide a kind of preparation method of architectural waterproof material.
On the one hand, to achieve these goals, the invention provides a kind of architectural waterproof material, it comprises woven base material and casting films; Wherein, the flat filament braiding that woven base material is produced with the flat filament raw material comprising high density polyethylene (HDPE) (HDPE) and thermoplastic elastomer is formed; Casting films with low density polyethylene (LDPE) (LDPE) for primary raw material is formed, and casting films and woven base material compound.
In the present invention, casting films can be one deck, also can be and is positioned at the two-layer of woven base material both sides.In addition, casting films can directly curtain coating on woven base material; Also can arrange other rete between casting films and woven base material, casting films curtain coating is on this other rete.
In the present invention, thermoplastic elastomer is the rubber with high-elastic characteristic flexible unit low for softening point pole and rigid monomer being carried out block copolymerization, it utilizes rigid monomer can play the effect of physical crosslinking after the cooling period, and after intensification, rigid segment can soften again again, thus can re-start thermoplastic machine-shaping.
In the present invention, in flat filament raw material, also can add other auxiliary agent, such as antiaging agent, anti-shrinking medium, colouring agent etc.
In the present invention, also can add corresponding auxiliary agent, such as antiaging agent, colouring agent in the raw material of casting films, surface conditioning agent or surface treatment sensitizer, to make, anti ageing property is better, peeling force is larger, adhesive plays better effect.
In the present invention, the thickness of casting films is 20-60g/m2, and its effect is water-impervious, sometimes also plays the effect of another antiseepage film of bonding.
In the present invention, owing to the addition of thermoplastic elastomer in flat filament raw material, the woven base material of HDPE flat filament braiding, more a lot of by force than general HDPE film strength especially tearing toughness, more than 5-6 times can be reached.
According to another detailed description of the invention of the present invention, thermoplastic elastomer is POE or TPE.
According to another detailed description of the invention of the present invention, thermoplastic elastomer accounts for the 5%-20% of flat filament raw material gross weight, on this basis more preferably 5%-10%.
In order to produce upper better control, usual product larger through density ratio weft density.According to another detailed description of the invention of the present invention, woven base material be 20-60 root/10 centimetre through density, more preferably 22-50 root/10 centimetre on this basis, weft density is 18-60 root/10 centimetre.
According to another detailed description of the invention of the present invention, casting films is two-layer, lays respectively at the both sides of woven base material.
According to another detailed description of the invention of the present invention, comprise antiseepage film (such as PE blown film or calendered film) further, antiseepage film is positioned at the outside of casting films, and namely casting films is between antiseepage film and woven base material.Because the Main Function of casting films and antiseepage film is water-impervious, thus also casting films can be called the first antiseepage film, antiseepage film be called the second antiseepage film.
According to another detailed description of the invention of the present invention, comprise two-layer antiseepage film further; Two-layer casting films is positioned at the both sides of woven base material, and two-layer antiseepage film lays respectively at the outside of two-layer casting films.
In general, this architectural waterproof material can be two-layer (casting films, woven base material), three layers (casting films, woven base material, casting films), three layers (antiseepage film, casting films, woven base material), four layers (antiseepage film, casting films, woven base material, casting films), five layers (antiseepage film, casting films, woven base material, casting films, antiseepage film).
On the other hand, the invention provides the method preparing above-mentioned architectural waterproof material, it comprises the steps:
(1) flat filament raw material is prepared: with high density polyethylene (HDPE) heat of mixing plastics elastomer preparation flat filament raw material;
(2) produce flat filament: by raw material film extrusion step (1) prepared, then cut itemize, drawn 2-6 doubly, shaped by shaping roller tube after be wound into an ingot, produce the flat filament of high elongation rate; Wherein heat setting temperature is more than 120 DEG C;
(3) woven base material: the flat filament produced with step (2) is that material weaves, manufactures woven base material;
(4) casting films is manufactured: form casting films by after the coating raw materials melt mainly comprising low density polyethylene (LDPE), and make casting films and woven base material compound.
Further, in step (2), the pipe with spiral pipe for cooling is set in shaping roller tube, to carry out water flowing cooling to shaping roller tube, to control the hot relaxation shrinkage of flat filament below 1.5%.
Further, in step (3), braiding apparatus increases power of traction motor to original 1.2-2 times; And single two adjustable selvage guide rod of arc is set; What adjust yardage roll collects angle and tension force; Increase thread plate, make flat filament by assigned address more easily by braided ring.
In addition, also can comprise the steps: to fit in the outside of one deck or two-layer casting films one deck antiseepage film, to increase antiseep effect, increase material resistance to hydrostatic pressure performance.This antiseepage film can be, such as PE blown film or calendered film.Specifically, in the one or both sides compound casting films of woven base material, then fit in the outside of one deck or two-layer casting films one deck PE blown film or calendered film.
In step (2), the flat filament of high elongation rate is the flat filament of percentage elongation more than 50%.
In step (2), draw ratio be 2-6 doubly, on this basis more preferably 2-3 doubly, greatly reduce relative to the draw ratio doubly of 5-7 in prior art, the flat filament obtained after can making stretching has larger percentage elongation.
In addition, for " ring " phenomenon easily occurred in drawing process, following means are adopted to solve: 1, regulate draft temperature according to formula, the content of thermoplastic elastomer is high, then reduce draft temperature; The content of thermoplastic elastomer is low, then improve draft temperature; 2, arrange two stretching-machines to stretch, namely two stretching-machines are end to end, carry out succeeding stretch; When 3, stretching, at the rotating speed of after-drawing machine faster than the rotating speed at front stretching-machine; During sizing, at the rotating speed of front stretching-machine faster than the rotating speed at after-drawing machine.
Compared with prior art, the present invention possesses following beneficial effect:
In the present invention, owing to the addition of thermoplastic elastomer in flat filament raw material, the woven base material of HDPE flat filament braiding, more a lot of by force than general HDPE film strength especially tearing toughness, more than 5-6 times can be reached; By arranging casting films and antiseepage film, making product of the present invention have better antiseep effect, extending service life simultaneously, making product of the present invention have higher cost performance.
Method of the present invention can when ensureing to be applicable to intensity, improve more than product percentage elongation to 45%, improve the percentage elongation of product and the adhesive property of material, and the contradiction solved between product percentage elongation and intensity, hot relaxation shrinkage, relation between balance three, makes product become the architectural waterproof material of high performance-price ratio.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3;
Fig. 4 is the structural representation of embodiment 4;
Fig. 5 is the structural representation of embodiment 5.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, the architectural waterproof material of the present embodiment has five layers altogether, and it comprises one deck woven base material 1, two-layer casting films 2, two-layer PE blown film 3.Wherein, woven base material 1 is that the flat filament braiding that primary raw material heat of mixing plastics elastomer is produced forms with high density polyethylene (HDPE).Two-layer casting films 2 is for low density polyethylene (LDPE) is through extruding fused film curtain coating on woven base material 1 both sides.Two-layer PE blown film 3 fits in the outside of two-layer casting films 2 respectively, to be compound on woven base material 1 with two-layer casting films 2 simultaneously.
The method preparing the present embodiment architectural waterproof material comprises the steps:
(1) preparation raw material: with high density polyethylene (HDPE) heat of mixing plastics elastomer (such as POE), antiaging agent, anti-shrinking medium, colouring agent preparation raw material;
(2) produce flat filament: by raw material film extrusion step (1) prepared, then cut itemize, drawn 2-3 doubly, shaped by shaping roller tube after be wound into an ingot, produce the flat filament of the high elongation rate of percentage elongation more than 50%; Heat setting temperature is more than 120 DEG C, and in shaping roller tube, arrange the pipe with spiral pipe for cooling, and carries out water flowing cooling to shaping roller tube, to control the hot relaxation shrinkage of flat filament below 1.5%.
The system realizing this step comprises: extruder (as screw extruder), the first stretching-machine, the second stretching-machine, forming machine.Wherein, extruder is used for the raw material film extrusion that will comprise high density polyethylene (HDPE), thermoplastic elastomer (such as POE), antiaging agent, anti-shrinking medium, colouring agent.First stretching-machine is used for the film after to cutting itemize and carries out first time stretching, obtains filiform, and the second stretching-machine is used for carrying out second time to the filiform obtained after one-off drawing and stretches.Forming machine is used for shaping to the filiform obtained after twice stretching, obtains flat filament.
(3) woven base material: the flat filament produced with step (2) is that material weaves, manufactures woven base material; Braiding apparatus increases power of traction motor to original 1.2-2 times; And single two adjustable selvage guide rod of arc is set; What adjust yardage roll collects angle and tension force; Increase thread plate, make flat filament by assigned address more easily by braided ring.
(4) casting films is manufactured: by after the coating raw materials melt mainly comprising low density polyethylene (LDPE), antiaging agent, colouring agent, surface conditioning agent (or surface treatment sensitizer), curtain coating to the both sides of woven base material forms two-layer casting films, make casting films and woven base material compound, the thickness of casting films is 20/m2.
(5) laminating antiseepage film: one deck antiseepage film of all fitting in the outside of two-layer casting films (such as PE blown film), to increase antiseep effect, increases material resistance to hydrostatic pressure performance.
Embodiment 2
As shown in Figure 2, the difference of the present embodiment and embodiment 1 is: the thermoplastic elastomer in (1) raw material is TPE; (2) architectural waterproof material made is two-layer altogether, only comprises one deck woven base material 1 and one deck casting films 2, casting films 2 directly in curtain coating to woven base material 1 and with woven base material 1 compound.
Embodiment 3
As shown in Figure 3, the difference of the present embodiment and embodiment 1 is: the architectural waterproof material made has three layers altogether, and comprise one deck woven base material 1 and two-layer casting films 2, two-layer casting films 2 lays respectively at the both sides of woven base material 1.Two-layer casting films 2 directly in curtain coating to woven base material 1 and with woven base material 1 compound.
Embodiment 4
As shown in Figure 4, the difference of the present embodiment and embodiment 1 is: (1) antiseepage film 3 is PE calendered film; (2) architectural waterproof material made has three layers altogether, and comprise one deck woven base material 1, one deck casting films 2, one deck PE calendered film 3, wherein PE calendered film 3 is positioned at outside casting films 2, with PE calendered film 3 compound while of in casting films 2 curtain coating to woven base material 1.
Embodiment 5
As shown in Figure 5, the difference of the present embodiment and embodiment 1 is: the architectural waterproof material made has four layers altogether, is followed successively by from top to bottom: PE blown film 3, ground floor casting films 2, woven base material 1, second layer casting films 2.
Although the present invention discloses as above with preferred embodiment, and is not used to limit scope of the invention process.Any those of ordinary skill in the art, not departing from invention scope of the present invention, when doing a little improvement, namely every equal improvement done according to the present invention, should be scope of the present invention and contained.
Claims (3)
1. prepare a method for architectural waterproof material, it comprises the steps:
(1) flat filament raw material is prepared: with high density polyethylene (HDPE) heat of mixing plastics elastomer preparation flat filament raw material;
(2) produce flat filament: by raw material film extrusion step (1) prepared, then cut itemize, drawn 2-6 doubly, shaped by shaping roller tube after be wound into an ingot, produce the flat filament of high elongation rate; Wherein heat setting temperature is more than 120 DEG C;
(3) woven base material: the flat filament produced with step (2) is that material weaves, manufactures woven base material;
(4) casting films is manufactured: form casting films by after the coating raw materials melt mainly comprising low density polyethylene (LDPE), and make described casting films and described woven base material compound;
Wherein, in the drawing process of described step (2), regulate draft temperature according to formula, the content of thermoplastic elastomer is high, then reduce draft temperature, and the content of thermoplastic elastomer is low, then improve draft temperature; Arrange two stretching-machines to stretch, namely two stretching-machines are end to end, carry out succeeding stretch; During stretching, at the rotating speed of after-drawing machine faster than the rotating speed at front stretching-machine, during sizing, at the rotating speed of front stretching-machine faster than the rotating speed at after-drawing machine.
2., the method for claim 1, wherein in described step (2), the pipe with spiral pipe for cooling is set in shaping roller tube, to carry out water flowing cooling to shaping roller tube.
3. the method for claim 1, wherein in described step (3), braiding apparatus increase power of traction motor to original 1.2-2 doubly; And single two adjustable selvage guide rod of arc is set; What adjust yardage roll collects angle and tension force; Increase thread plate, make flat filament by assigned address more easily by braided ring.
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| CN105398149B (en) * | 2015-11-17 | 2016-12-21 | 华北水利水电大学 | Sodium-based bentonite waterproof carpet and preparation method thereof |
| CN105482226A (en) * | 2015-12-31 | 2016-04-13 | 佛山佛塑科技集团股份有限公司 | Breathable master batch, waterproof and breathable composite knitting cloth and corresponding manufacturing method |
| CN106245217B (en) * | 2016-08-19 | 2017-12-29 | 常州市宏发纵横新材料科技股份有限公司 | A kind of waterproof material warp knit inlaid thread cloth and preparation method thereof |
| CN108978619A (en) * | 2017-06-01 | 2018-12-11 | 无锡市振基土工材料有限公司 | A kind of geotextiles preparation method that braiding layer is reinforced |
| CN109291564A (en) * | 2018-09-14 | 2019-02-01 | 无锡市昊恩保护膜有限公司 | A kind of protective film and its preparation method and application |
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| CN101672045A (en) * | 2009-09-27 | 2010-03-17 | 佛山塑料集团股份有限公司 | Seepage-proofing geomembrane and manufacturing method thereof |
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