CN117445516B - A geocomposite material and its preparation process - Google Patents
A geocomposite material and its preparation process Download PDFInfo
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- CN117445516B CN117445516B CN202311534762.5A CN202311534762A CN117445516B CN 117445516 B CN117445516 B CN 117445516B CN 202311534762 A CN202311534762 A CN 202311534762A CN 117445516 B CN117445516 B CN 117445516B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/712—Weather resistant
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
本发明涉及一种土工复合材料及制备工艺。土工复合材料包含贴合复合在一起的土工布层和土工膜层，土工布层具有涂覆段，土工膜层的表面具有喷丝处理段，喷丝处理段设在与土工布层的涂覆段相贴合的区域。制备工艺包括以下步骤：S1，对土工布层进行分段涂覆和烘干，形成具有多个涂覆段的土工布层；S2，对土工膜层的表面进行分段喷丝处理，形成具有多个喷丝处理段的土工膜层；S3，将步骤S1中得到的土工布层和步骤S2中得到的土工膜层进行热贴合，使土工膜层的多个喷丝处理段对应土工布层的多个涂覆段区域，得到土工复合材料。本发明通过对土工膜双面错位喷丝处理来减少热贴合中的结合差异，保证整个布‑膜复合材料产品一致性，易于产业化。
The present invention relates to a geocomposite material and a preparation process. The geocomposite material comprises a geotextile layer and a geomembrane layer which are bonded together, the geotextile layer having a coating section, and the surface of the geomembrane layer having a spinning treatment section, the spinning treatment section being arranged in an area bonded with the coating section of the geotextile layer. The preparation process comprises the following steps: S1, coating and drying the geotextile layer in sections to form a geotextile layer having a plurality of coating sections; S2, performing segmented spinning treatment on the surface of the geomembrane layer to form a geomembrane layer having a plurality of spinning treatment sections; S3, thermally bonding the geotextile layer obtained in step S1 and the geomembrane layer obtained in step S2, so that the plurality of spinning treatment sections of the geomembrane layer correspond to the plurality of coating section areas of the geotextile layer, and obtaining a geocomposite material. The present invention reduces the bonding difference in thermal bonding by performing staggered spinning treatment on both sides of the geomembrane, thereby ensuring the consistency of the entire cloth-membrane composite material product and facilitating industrialization.
Description
Technical Field
The invention relates to the technical field of geotechnical composite materials, in particular to a geotechnical composite material and a preparation process thereof.
Background
The cloth-film composite material is a common geotechnical composite material, in order to improve the flame retardant, weather resistant and corrosion resistant properties, especially the flame retardant properties, single cloth or single film in the cloth-film composite material is sometimes subjected to coating treatment, wherein the single cloth is easier to carry out such coating treatment, but when the coating amount is larger or the coating concentration is higher, the coating film binding capacity of a coating part in subsequent thermal lamination is inferior to that of an uncoated part, so that the quality of the whole cloth-film composite material product is affected.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a geotechnical composite material and a preparation process, wherein a double-sided dislocation spinning treatment process is added to a geotechnical film, so that the cloth film bonding quality of a coating treatment part is improved, and the consistency of the whole cloth-film composite material product is ensured.
The aim of the invention is achieved by the following technical scheme.
In a first aspect, the present invention provides a geocomposite.
Specifically, the geotechnical composite material comprises a geotechnical cloth layer and a geotechnical film layer which are laminated and compounded together, wherein the geotechnical cloth layer is provided with a plurality of coating sections, the surface of the geotechnical film layer is provided with a plurality of spinning treatment sections, and the spinning treatment sections are arranged in areas which are laminated with the coating sections of the geotechnical cloth layer.
Further, the coating section is completely overlapped with the spinning treatment section, or the area of the spinning treatment section is not less than 65% of the area of the coating section.
Further, the geotechnical cloth layer is including setting up the first geotechnical cloth layer of geotechnical film layer upside and setting up the second geotechnical cloth layer of geotechnical film layer downside, the interval distribution has a plurality of first coating sections on the first geotechnical cloth layer, the interval distribution has a plurality of second coating sections on the second geotechnical cloth layer, the surface of the upper and lower both sides of geotechnical film layer all interval distribution has a plurality of spinning treatment sections, and the upper side surface a plurality of spinning treatment sections with a plurality of first coating sections laminating mutually, the downside surface a plurality of spinning treatment sections with a plurality of second coating sections laminating mutually, the upside surface a plurality of spinning treatment sections with a plurality of spinning treatment sections of downside surface are crisscross distribution, correspondingly a plurality of first coating sections with a plurality of second coating sections are also crisscross distribution.
Further, the staggered distribution mode is as follows: staggered and non-overlapping.
Further, the material of the silk sprayed by the silk spraying treatment section is the same as the material of the geomembrane layer, or the softening temperature of the silk sprayed by the silk spraying treatment section is not higher than the material of the geomembrane layer.
Further, the material coated by the coating section is a flame retardant material.
In a second aspect, the present invention provides a process for preparing the above-described geocomposite.
The preparation process of the geotechnical composite material comprises the following steps:
S1, carrying out sectional coating and drying on a geotechnical cloth layer to form the geotechnical cloth layer with a plurality of coating sections;
s2, carrying out sectional spinning treatment on the surface of the geomembrane layer to form the geomembrane layer with a plurality of spinning treatment sections;
And S3, performing heat bonding on the geotechnical cloth layer with the plurality of coating sections obtained in the step S1 and the geotechnical film layer with the plurality of spinning treatment sections obtained in the step S2, so that the plurality of spinning treatment sections of the geotechnical film layer correspond to the plurality of coating section areas of the geotechnical cloth layer, and obtaining the geotechnical composite material.
Further, the step S1 and the step S2 are performed sequentially or simultaneously.
Further, the sectional spinning treatment in step S2 adopts double-sided staggered spinning treatment, a plurality of spinning treatment sections are formed on the surfaces of the upper side and the lower side of the geomembrane layer through the double-sided staggered spinning treatment, and the plurality of spinning treatment sections on the upper side surface and the plurality of spinning treatment sections on the lower side surface are distributed in a staggered manner.
Further, step S1, step S2, step S3 are performed online.
The invention has the beneficial effects that:
In order to improve the performances of flame retardance, weather resistance, corrosion resistance and the like of the cloth-film composite material, particularly the flame retardance, single cloth in the cloth-film composite material is subjected to coating treatment before compounding, when the coating amount is large or the coating concentration is high, the coating film binding capacity of a coating part in subsequent hot lamination is inferior to that of an uncoated part, so that the quality of the whole cloth-film composite material is affected.
In addition, the cooperation and the stacking fault treatment of the coating sections of the geotechnical cloth layer and the spinning treatment sections of the geotechnical film layer also simultaneously meet the improvement of the overall performance of the material and the standard of the prior art, the compressibility, the adhesiveness and the mechanical property of the material are good, the implementation process is very scientific, the treatment and the final compounding of the raw materials of each monomer are easy to produce in a connecting way, the industrialized popularization and the improvement of the production efficiency are facilitated, and the geotechnical cloth layer is a brand new production mode with prospect.
Drawings
FIG. 1 is a schematic diagram of a geotextile layer and geomembrane layer mating scheme in a geotextile composite of the present invention.
FIG. 2 is a schematic diagram of a cross-sectional structure of a geocomposite according to the present invention.
The components represented by the reference numerals in the figures are:
a first geotextile layer 10, a first coated section 11;
geomembrane layer 20, spinning treatment section 21;
a second geotextile layer 30, a second coated section 31.
Detailed Description
Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings, in which the details shown are for purposes of illustration or convenience only and are not limiting the invention.
Example 1
Referring to fig. 2, the geocomposite provided in this embodiment includes a first geotechnical cloth layer 10, a geomembrane layer 20, and a second geotechnical cloth layer 30 that are laminated and compounded together from top to bottom, wherein a plurality of first coating sections 11 are distributed on the first geotechnical cloth layer 10 at intervals, and a plurality of second coating sections 31 are distributed on the second geotechnical cloth layer 30 at intervals.
In this embodiment, the first coating section 11 and the second coating section 31 are formed by discontinuously dipping the first geotextile layer 10 and the second geotextile layer 30 with a flame retardant coating, and the inorganic flame retardant particles in the coating colloid may be silica.
In some other embodiments based on the principles of the present invention, the first geotextile layer 10 and the second geotextile layer 30 may not be dipped with a flame retardant coating, but should be considered as being within the scope of the present invention as long as the principle effect of the present invention can be obtained.
Referring to fig. 1, a plurality of spinning treatment sections 21 are distributed on the upper and lower surfaces of the geomembrane layer 20 at intervals, the spinning treatment sections 21 on the upper surface are attached to the first coating sections 11 of the first geotechnical cloth layer 10, the spinning treatment sections 21 on the lower surface are attached to the second coating sections 31 of the second geotechnical cloth layer 30 (not shown in fig. 1), the spinning treatment sections 21 on the upper surface and the spinning treatment sections 21 on the lower surface are distributed in a staggered manner, and the first coating sections 11 and the second coating sections 31 are also distributed in a staggered manner.
The invention firstly shows that the geotechnical cloth layer is provided with a coating section, the surface of the geotechnical film layer 20 is provided with a spinning treatment section 21, and the spinning treatment section 21 of the geotechnical film layer 20 is arranged in a region which is jointed with the coating section of the geotechnical cloth layer, so that the cloth film combination capacity of a coating part in the subsequent hot jointing is not obviously inferior to that of an uncoated part, and the consistency of the whole cloth-film composite material product is good, and the quality is ensured.
If the corresponding position of the geotechnical layer 20 is not subjected to spinning treatment at the coating position of the geotechnical layer, as the geotechnical layer is made of synthetic fibers such as polyester, acrylic and the like, the geotechnical layer at the position is soaked with the flame-retardant coating, and solid aggregate after the coating is dried affects the fiber state of the geotechnical layer, the cloth film bonding capability of the position can be weakened to a certain extent, so that the whole product shows bonding difference.
In order to achieve the above objective, the material of the filaments sprayed by the spinning treatment section 21 may be the same as that of the geomembrane layer 20, or the softening temperature of the filaments sprayed by the spinning treatment section 21 may be preferably lower than that of the geomembrane layer 20 to a certain extent, so that the filaments are easier to be heated and softened in auxiliary heating to improve the bonding capability with the geomembrane layer. The film material may be LDPE, HDPE, PE, PVC or the like including a spun yarn material, without limitation.
The coating section and the spinning treatment section 21 in this embodiment may be completely overlapped, and if not completely overlapped, it is also preferable to ensure that the area of the spinning treatment section 21 is not less than 65% of the area of the coating section to ensure good adhesion therebetween. However, it is preferable that the spinning treatment sections 21 on the upper surface and the spinning treatment sections 21 on the lower surface of the geomembrane layer 20 are alternately distributed and not overlapped, and the first coating sections 11 of the corresponding first geotextile layer 10 and the second coating sections 31 of the second geotextile layer 30 are alternately distributed and not overlapped.
Here, although the first coated section 11 of the first geotextile layer 10 and the second coated section 31 of the second geotextile layer 30 are not overlapped, since the first geotextile layer 10 and the second geotextile layer 30 are coated by dipping, it is preferable that the dipping region formed by extending the first coated section 11 of the first geotextile layer 10 and the dipping region formed by extending the second coated section 31 of the second geotextile layer 30 have a certain overlap, for example, the dipping region has an overlapping area of about one third to not more than half, and the fire-retarding and flame-retarding effects of the geotextile material are not affected due to the blocking property of the flame-retarding material itself.
Example 2
The present embodiment provides a process for preparing a geocomposite material according to the geocomposite material set forth in embodiment 1.
Specifically, the preparation process of the geotechnical composite material comprises the following steps:
S1, coating and drying the geotechnical cloth layer in a segmented mode to form the geotechnical cloth layer with a plurality of coating segments.
S2, carrying out sectional spinning treatment on the surface of the geomembrane layer 20 to form the geomembrane layer 20 with a plurality of spinning treatment sections 21.
And S3, performing heat bonding on the geotechnical cloth layer with the plurality of coating sections obtained in the step S1 and the geomembrane layer 20 with the plurality of spinning treatment sections 21 obtained in the step S2, so that the plurality of spinning treatment sections 21 of the geomembrane layer 20 correspond to the plurality of coating section areas of the geotechnical cloth layer, and obtaining the geotechnical composite material.
In the protection scheme of the present invention, at least the sequence of the step S1 and the step S2 is not limited, and the step S1, the step S2, and the step S3 may be performed sequentially or simultaneously, and more preferably, the step S1, the step S2, and the step S3 are performed directly on line, and the geotechnical cloth layer prepared in the step S1 and the geotechnical film layer 20 prepared in the step S2 are directly introduced into the heat laminating unit to perform the heat lamination in the step S3.
Specifically, in step S1, a series of conveying rollers may be used to convey the geotechnical cloth layer while intermittently feeding the geotechnical cloth layer into the flame retardant material pool for dipping the flame retardant material, and the subsequent drying is also performed online, so as to directly obtain the first geotechnical cloth layer 10 and the second geotechnical cloth layer 30 having a plurality of coating sections. As the flame-retardant material is dipped on the geotechnical cloth layer at intervals, the effects of saving the flame-retardant material, shortening the drying time, and simultaneously meeting the improvement of the overall performance of the material and the standard of the prior art are achieved, and the compressibility, the attachability and the mechanical property of the material are good.
In step S2, the sectional spinning treatment in step S2 adopts double-sided staggered spinning treatment, a plurality of spinning treatment sections 21 are formed on the surfaces of the upper side and the lower side of the geomembrane layer 20 through double-sided staggered spinning treatment, and the plurality of spinning treatment sections 21 on the upper side surface and the plurality of spinning treatment sections 21 on the lower side surface are distributed in a staggered manner. The double-sided dislocation spinning treatment is also directly carried out in the process of stretching and offline the geomembrane layer 20, and spinning treatment is carried out on the upper surface and the lower surface of the geomembrane layer 20 by arranging spinning nozzles in a dislocation manner in the upper direction and the lower direction.
Next, the first geotextile layer 10 and the second geotextile layer 30 with the plurality of coating sections produced continuously on line in the step S1 and the geomembrane layer 20 with the plurality of spinning treatment sections 21 produced continuously on line in the step S2 may be directly introduced into the heat laminating unit to perform on-line heat lamination, and in this process, the drying waste heat of the first geotextile layer 10 and the second geotextile layer 30 and the manufacturing and spinning waste heat of the geomembrane layer 20 may improve the heat laminating efficiency and save the irradiation energy of the heat laminating unit to a certain extent.
It should be noted that the three-layer structure of the geocomposite material described in the embodiments 1 and 2 of the present invention may be the final geoproduct, or may not be the final product, i.e., the three-layer structure of the geocomposite material described in the embodiments 1 and 2 should be regarded as the three-layer structure included in the geoproduct, not the only three-layer structure.
The foregoing is merely a preferred embodiment of the present invention, and variations or modifications which would be apparent to those skilled in the art without departing from the spirit of the invention shall fall within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. A geotextile composite material comprising a geotextile layer and a geotextile film layer (20) which are laminated and combined together, wherein the geotextile layer is provided with a plurality of coating sections, the surface of the geotextile film layer (20) is provided with a plurality of spinning treatment sections (21), and the spinning treatment sections (21) are arranged in a region which is laminated with the coating sections of the geotextile layer;
The geotechnical cloth layer is including setting up first geotechnical cloth layer (10) of geotechnical cloth layer (20) upside and setting are in second geotechnical cloth layer (30) of geotechnical cloth layer (20) downside, the interval distribution has a plurality of first coating sections (11) on first geotechnical cloth layer (10), the interval distribution has a plurality of second coating sections (31) on second geotechnical cloth layer (30), the surface of the upper and lower both sides of geotechnical cloth layer (20) is all interval distribution has a plurality of spinning treatment sections (21), a plurality of spinning treatment sections (21) of upside surface with a plurality of first coating sections (11) are laminated, a plurality of spinning treatment sections (21) of downside surface with a plurality of spinning treatment sections (21) of downside surface are the staggered distribution, corresponding a plurality of first coating sections (11) and a plurality of second coating sections (31) are also the staggered distribution. Staggered and non-overlapping;
the material coated by the coating section is a flame-retardant material;
The coating section is completely overlapped with the spinning treatment section (21), or the coating section is not completely overlapped with the spinning treatment section (21) but the area of the spinning treatment section (21) is not less than 65% of the area of the coating section;
The material of the silk sprayed by the silk spraying treatment section (21) is the same as the material of the geomembrane layer (20), or the softening temperature of the silk sprayed by the silk spraying treatment section (21) is not higher than the material of the geomembrane layer (20).
2. A process for preparing a geocomposite according to claim 1, comprising the steps of:
S1, carrying out sectional coating and drying on a geotechnical cloth layer to form the geotechnical cloth layer with a plurality of coating sections;
S2, carrying out sectional spinning treatment on the surface of the geomembrane layer (20) to form the geomembrane layer (20) with a plurality of spinning treatment sections (21);
And S3, performing heat bonding on the geotechnical cloth layer with a plurality of coating sections obtained in the step S1 and the geotechnical film layer (20) with a plurality of spinning treatment sections (21) obtained in the step S2, so that the plurality of spinning treatment sections (21) of the geotechnical film layer (20) correspond to the plurality of coating section areas of the geotechnical cloth layer, and obtaining the geotechnical composite material.
3. The process for preparing a geocomposite according to claim 2, wherein step S1 and step S2 are performed sequentially or simultaneously.
4. The process for preparing a geocomposite according to claim 2, wherein the segmented spinning treatment in step S2 adopts a double-sided staggered spinning treatment, a plurality of spinning treatment sections (21) are formed on the surfaces of the upper side and the lower side of the geomembrane layer (20) through the double-sided staggered spinning treatment, and the plurality of spinning treatment sections (21) on the upper side surface and the plurality of spinning treatment sections (21) on the lower side surface are staggered.
5. The process for preparing a geocomposite according to claim 2, wherein step S1, step S2, step S3 are performed on-line.
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| CN202311534762.5A CN117445516B (en) | 2023-11-17 | 2023-11-17 | A geocomposite material and its preparation process |
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| CN202311534762.5A CN117445516B (en) | 2023-11-17 | 2023-11-17 | A geocomposite material and its preparation process |
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| JP4464904B2 (en) * | 2005-11-10 | 2010-05-19 | 富士川建材工業株式会社 | Construction method of fireproof covering structure |
| CN103572738A (en) * | 2012-07-20 | 2014-02-12 | 仪征市双友土工合成材料有限公司 | High-density polyethylene (HDPE) geomembrane and processing process thereof |
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| CN113232281A (en) * | 2021-06-04 | 2021-08-10 | 山东建通工程科技有限公司 | Geomembrane double-side rough spraying device |
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| CN103144384A (en) * | 2013-03-21 | 2013-06-12 | 田丽 | Heat-insulation and temperature-preservation material, preparation method and special equipment |
| CN113527784A (en) * | 2020-04-14 | 2021-10-22 | 中国石油化工股份有限公司 | Composite material for roughening geomembrane surface, roughened geomembrane and preparation methods of composite material and roughened geomembrane |
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