CN112757726A - Composite coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and preparation method thereof - Google Patents
Composite coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and preparation method thereof Download PDFInfo
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- CN112757726A CN112757726A CN202110018707.5A CN202110018707A CN112757726A CN 112757726 A CN112757726 A CN 112757726A CN 202110018707 A CN202110018707 A CN 202110018707A CN 112757726 A CN112757726 A CN 112757726A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/0216—Bicomponent or multicomponent fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
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Abstract
The invention relates to the technical application of geotechnical materials, in particular to a composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and a preparation method thereof. The geotechnical mat uses a plurality of polymer fibers to form a three-dimensional fiber net in a compounding way, and uses a plurality of resin materials to obtain a coarse denier long hot melting net core through high-temperature melting, extrusion spinning, cooling, wire disordering and net laying, and melting, reinforcing and forming, and the three-dimensional fiber net and the net core are compounded to obtain the filtration and reinforcement drainage mat which has high pressure resistance, large porosity, omnibearing water accumulation and horizontal and vertical drainage; rainwater which is gathered and permeates through the covering layer or sewage discharged by a storage yard can be discharged into the drainage ditch under the closed covering layer buried in the soil, the soil can be protected from loss and clogging, and the effect of soil reinforcement is achieved; the construction is convenient, and the cost is low.
Description
Technical Field
The invention relates to the technical application of geotechnical materials, in particular to a composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and a preparation method thereof.
Background
The drainage geotechnical mat is widely applied to the fields of refuse landfills, underground building drainage, highways, tunnels, slopes, hydraulic engineering and the like, and mainly plays roles in reverse filtration, isolation, drainage, reinforcement and the like. The drainage core plate is a W-shaped drainage channel obtained by extrusion forming by using polypropylene as a raw material, and the drainage pad has good drainage capacity, but has low compressive strength and poor acid and alkali resistance.
Disclosure of Invention
Aiming at the problems in the prior art, the invention adopts a plurality of polymer fibers to form a three-dimensional fiber net in a compounding way, a plurality of resin materials are subjected to high-temperature melting, extrusion spinning, cooling, messy yarn lapping and melting reinforcement molding to obtain a net core, and the three-dimensional fiber net and the net core are compounded to obtain the composite geotechnical mat with high pressure resistance, large porosity, omnibearing water accumulation and horizontal and vertical drainage.
In order to realize the aim, the invention provides a composite type coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat, which specifically comprises a middle-layer coarse denier long hot-melt three-dimensional net core, an upper layer three-dimensional fiber net and a lower layer three-dimensional fiber net; the middle layer and the upper and lower three-dimensional fiber nets are glued and fixed through environment-friendly glue;
the thick denier long fiber hot-melt three-dimensional net core comprises the following raw materials: 30-50 parts of high-density polyethylene, 30-50 parts of polypropylene and 2-8 parts of acrylonitrile-butadiene-styrene copolymer;
the three-dimensional fiber net is formed by compounding ES fibers, PET fibers and PP fibers by adopting environment-friendly glue according to the mass ratio of 1:1-2: 0.5-1.5.
Further, the thickness of the thick denier long fiber hot-melt three-dimensional net core in the middle layer is 6-40mm, and the thickness of the three-dimensional fiber net is 3-20 mm.
Furthermore, the environment-friendly glue is polyvinyl alcohol environment-friendly glue.
Based on the same inventive concept, the preparation method of the composite type coarse denier long hot melt net core filtering reinforced drainage geotechnical mat specifically comprises the following steps:
s1, drying and crushing the high-density polyethylene and the polypropylene to obtain a resin mixture, mixing the resin mixture with a acrylonitrile-butadiene-styrene copolymer, and mixing, cooling and granulating at the temperature of 185-195 ℃ to obtain resin particles;
s2, melting the resin particles at the temperature of 150-165 ℃, extruding, spinning and cooling to obtain net core spinning;
s3, laying the net core in a spinning way, and carrying out hot melting reinforcement to obtain a coarse denier long hot melting net core;
s4, laying and compounding the ES fibers, the PET fibers and the PP fibers by adopting environment-friendly glue to obtain a three-dimensional fiber net;
and S5, compounding the coarse denier long hot-melt net core and the three-dimensional fiber net by adopting environment-friendly glue to obtain the composite coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat.
Further, the hot melt consolidation in the step S3 has the following process conditions: the temperature is as follows: 100-120 ℃ for the following time: 10-30 min.
Has the advantages that:
(1) according to the invention, a three-dimensional fiber net is formed by compounding a plurality of polymer fibers, a plurality of resin materials are subjected to high-temperature melting, extrusion spinning, cooling, wire disordering and lapping, melting, reinforcing and forming to obtain a coarse denier long hot-melt net core, and the three-dimensional fiber net and the net core are compounded to obtain the filtering and reinforcing drainage mat, wherein the drainage mat has high pressure resistance, large porosity, omnibearing water accumulation and horizontal and vertical drainage; rainwater which is gathered and permeates through the covering layer or sewage discharged by a storage yard can be discharged into the drainage ditch under the closed covering layer buried in the soil, the soil can be protected from loss and clogging, and the effect of soil reinforcement is achieved; the construction is convenient, and the cost is low.
(2) The compressive strength of the composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat obtained by the invention can reach 1000KPa at most, the vertical permeability coefficient is 10-25 cm/s, the composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat has high temperature resistance and acid resistance, the product strength retention rate is not less than 85.0% when the composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat is soaked in a solution with the pH value of 2-11, and the composite type coarse denier.
Drawings
Fig. 1 is a schematic structural view of a composite type coarse denier long hot-melt mesh core filtration reinforced drainage geotechnical mat provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a thick denier long fiber hot-melt three-dimensional net core provided by an embodiment of the invention.
[ Annotation ] for:
1. the large-denier long fiber hot-melting three-dimensional net core comprises a large-denier long fiber hot-melting three-dimensional net core, 2 and a first three-dimensional fiber net layer; 3. a second three-dimensional web layer; 4. an environment-friendly glue layer; 5. spinning by using a net core; 6. a water-permeable pore.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to specific embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In the embodiment of the invention, the invention provides a composite type coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat, as shown in fig. 1, the geotechnical mat is divided into 3 layers, a coarse denier long hot-melt net core 1 is arranged in the middle, three-dimensional fiber net layers 2 and 3 are arranged on the upper side and the lower side, and the coarse denier long hot-melt net core 1 and the three-dimensional fiber net layers 2 and 3 are bonded by environment-friendly glue. As shown in fig. 2, the coarse denier long fiber hot-melt stereoscopic mesh core is prepared by adding a toughening agent acrylonitrile-butadiene-styrene copolymer (ABS) into resin High Density Polyethylene (HDPE) and polypropylene (PP), hot-melt extruding to obtain coarse denier long hot-melt spun yarns, and laying the coarse denier long hot-melt spun yarns into a mesh by random fiber to obtain the stereoscopic mesh core obtained by cross-blending and burning each mesh core spun yarn 5, so as to form a plurality of water permeable pores.
Example 1
The invention provides a composite geotechnical mat with a coarse denier long hot-melt net core for filtration and reinforcement of drainage, which is prepared by the following steps:
s1, drying 50 parts of HDPE and 30 parts of PP, crushing to obtain a resin mixture, mixing the resin mixture with 3 parts of ABS, mixing at 185 ℃, cooling and granulating to obtain resin particles;
s2, melting the resin particles at 150 ℃, extruding, spinning and cooling to obtain a net core spinning;
s3, performing messy silk lapping on the net core spinning, and performing hot melting reinforcement at the temperature of 120 ℃ for 20min to obtain a thick denier long hot melting net core;
s4, laying and compounding 20 parts of ES fibers, 25 parts of PET fibers and 20 parts of PP fibers by adopting environment-friendly glue to obtain a three-dimensional fiber net;
and S5, compounding the coarse denier long hot-melt net core and the three-dimensional fiber net by adopting environment-friendly glue to obtain the composite coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat.
Example 2
S1, drying 40 parts of HDPE and 40 parts of PP, crushing to obtain a resin mixture, mixing the resin mixture with 5 parts of ABS, mixing at the temperature of 190 ℃, cooling and granulating to obtain resin particles;
s2, melting the resin particles at 160 ℃, extruding, spinning and cooling to obtain a net core spinning;
s3, spreading the net core by spinning, and carrying out hot melting reinforcement for 30min at 100 ℃ to obtain a coarse denier long hot melting net core;
s4, laying and compounding 20 parts of ES fibers, 30 parts of PET fibers and 15 parts of PP fibers by adopting environment-friendly glue to obtain a three-dimensional fiber net;
and S5, compounding the coarse denier long hot-melt net core and the three-dimensional fiber net by adopting environment-friendly glue to obtain the composite coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat.
Example 3
S1, drying 30 parts of HDPE and 50 parts of PP, crushing to obtain a resin mixture, mixing the resin mixture with 8 parts of ABS, mixing at the temperature of 195 ℃, cooling and granulating to obtain resin particles;
s2, melting the resin particles at 150 ℃, extruding, spinning and cooling to obtain a net core spinning;
s3, spreading the net core by spinning, and carrying out hot melting reinforcement for 15min at 110 ℃ to obtain a coarse denier long hot melting net core;
s4, paving and compounding 25 parts of ES fibers, 25 parts of PET fibers and 30 parts of PP fibers by adopting environment-friendly glue to obtain a three-dimensional fiber net;
and S5, compounding the coarse denier long hot-melt net core and the three-dimensional fiber net by adopting environment-friendly glue to obtain the composite coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat.
The composite geotextile mat with the thick denier and long hot melt net core for filtration and reinforcement of drainage obtained in the examples 1 to 3 is subjected to mechanical property, high temperature resistance and acid and alkali resistance detection, the parameters are determined according to the national test standard of geotextile, and the specific results are shown in table 1.
Table 1 composite type coarse denier long hot melt net core filtration reinforced drainage geotechnical mat performance test result
As can be seen from Table 1, the composite material obtained by the invention has good compressive strength, high temperature resistance and acid and alkali resistance, is soaked in a solution with a pH value of 2-11, has a product strength retention rate of not less than 85.0%, and can be widely applied to geotechnical drainage engineering.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical scope of the present invention, and equivalents and modifications of the technical solutions and concepts of the present invention should be covered by the scope of the present invention.
Claims (5)
1. A composite geotechnical mat with a coarse denier long hot-melt net core for filtering and reinforcing water drainage is characterized by specifically comprising a middle-layer coarse denier long fiber hot-melt three-dimensional net core, an upper-layer three-dimensional fiber net and a lower-layer three-dimensional fiber net; the middle layer and the upper and lower three-dimensional fiber nets are glued and fixed through environment-friendly glue;
the thick denier long fiber hot-melt three-dimensional net core comprises the following raw materials: 30-50 parts of high-density polyethylene, 30-50 parts of polypropylene and 2-8 parts of acrylonitrile-butadiene-styrene copolymer;
the three-dimensional fiber net is formed by compounding ES fibers, PET fibers and PP fibers by adopting environment-friendly glue according to the mass ratio of 1:1-2: 0.5-1.5.
2. The composite type coarse denier long hot melt net core filtering and reinforcing drainage geotechnical mat pad as claimed in claim 1, wherein the thickness of the middle layer coarse denier long hot melt net core is 6-40mm, and the thickness of the three-dimensional fiber net is 3-20 mm.
3. The composite type coarse denier long hot melt net core filtering reinforced draining geotechnical mat pad as claimed in claim 1, wherein said environmental protection glue is polyvinyl alcohol environmental protection glue.
4. A preparation method of a composite type coarse denier long hot melt net core filtering reinforced drainage geotechnical mat is characterized by comprising the following steps:
s1, drying and crushing the high-density polyethylene and the polypropylene to obtain a resin mixture, mixing the resin mixture with a acrylonitrile-butadiene-styrene copolymer, and mixing, cooling and granulating at the temperature of 185-195 ℃ to obtain resin particles;
s2, melting the resin particles at the temperature of 150-165 ℃, extruding, spinning and cooling to obtain net core spinning;
s3, laying the net core in a spinning way, and carrying out hot melting reinforcement to obtain a coarse denier long hot melting net core;
s4, laying and compounding the ES fibers, the PET fibers and the PP fibers by adopting environment-friendly glue to obtain a three-dimensional fiber net;
and S5, compounding the coarse denier long hot-melt net core and the three-dimensional fiber net by adopting environment-friendly glue to obtain the composite coarse denier long hot-melt net core filtering and reinforcing drainage geotechnical mat.
5. The preparation method of the composite type coarse denier long hot melt net core filtering reinforced draining geotechnical mat pad according to claim 4, wherein the hot melt reinforcement process conditions in the step S3 are as follows:
the temperature is as follows: 100-120 ℃ for the following time: 10-30 min.
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| CN202110018707.5A CN112757726A (en) | 2021-01-07 | 2021-01-07 | Composite coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and preparation method thereof |
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| CN202110018707.5A CN112757726A (en) | 2021-01-07 | 2021-01-07 | Composite coarse denier long hot-melt net core filtering reinforced drainage geotechnical mat and preparation method thereof |
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| CN113500832A (en) * | 2021-05-12 | 2021-10-15 | 浩阳环境股份有限公司 | Anti-clogging three-dimensional composite drainage net |
| US11274437B2 (en) * | 2018-02-10 | 2022-03-15 | R. H. Tamlyn & Sons, Lp | Draining construction framework and methods for same |
| US11408142B2 (en) | 2018-02-10 | 2022-08-09 | R. H. Tamlyn & Sons, Lp | Draining construction wrap and methods for same |
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