CN107060252B - Water-based zero-formaldehyde ecological plate and manufacturing process thereof - Google Patents
Water-based zero-formaldehyde ecological plate and manufacturing process thereof Download PDFInfo
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- CN107060252B CN107060252B CN201611184530.1A CN201611184530A CN107060252B CN 107060252 B CN107060252 B CN 107060252B CN 201611184530 A CN201611184530 A CN 201611184530A CN 107060252 B CN107060252 B CN 107060252B
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000123 paper Substances 0.000 claims abstract description 101
- 229920002635 polyurethane Polymers 0.000 claims abstract description 98
- 239000004814 polyurethane Substances 0.000 claims abstract description 98
- 239000010410 layer Substances 0.000 claims abstract description 55
- 239000011094 fiberboard Substances 0.000 claims abstract description 34
- 239000002344 surface layer Substances 0.000 claims abstract description 13
- 125000002091 cationic group Chemical group 0.000 claims description 35
- 125000000129 anionic group Chemical group 0.000 claims description 28
- 238000007731 hot pressing Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 7
- 229920005749 polyurethane resin Polymers 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 229920000877 Melamine resin Polymers 0.000 description 7
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 238000005034 decoration Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- 239000001648 tannin Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0866—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements composed of several layers, e.g. sandwich panels or layered panels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a zero-formaldehyde ecological board and a manufacturing process thereof, wherein the water-based zero-formaldehyde ecological board comprises two decorative papers, balance paper and a fiber board, wherein the two decorative papers are respectively positioned on an upper surface layer and a lower surface layer; the outer surface layers of the two pieces of decorative paper are respectively provided with a first waterborne polyurethane layer, the balance paper is respectively adhered to the two pieces of decorative paper through a second waterborne polyurethane layer, and the balance paper is adhered to the fiber board through a third waterborne polyurethane layer. The invention adopts environment-friendly waterborne polyurethane, so that the formaldehyde release of the ecological plate can reach below 0.1 mg/L; the invention simplifies the manufacturing process of the ecological plate and greatly improves the production efficiency.
Description
Technical Field
The invention relates to the field of ecological plate production processes, and particularly discloses a water-based zero-formaldehyde ecological plate and a manufacturing process thereof.
Background
With the continuous improvement of the scientific and technological level and the living standard, the ecological plate is increasingly popular with the masses of people as an interior decoration material. The ecological plate has the characteristics of high temperature resistance, acid and alkali resistance, moisture resistance, fire resistance and the like, the surface is not easy to discolor and peel, the ecological plate is easy to process into veneers with different styles and strong texture, and the ecological plate can be rapidly applied to the aspects of furniture, floors, indoor decoration and the like since birth. Meanwhile, the product is used as a novel product to combine the functions of two boards, namely the veneer and the plywood, so that the added value of the product is improved while the production process is saved, the decoration cost and the labor cost are saved for consumers, the new trend of home decoration is guided, and the mainstream board furniture in the market is basically manufactured by adopting the melamine ecological board. The uppermost layer of the high-density fiberboard is wear-resistant paper soaked with melamine glue, the second layer is decorative paper not soaked with the melamine glue, the third layer is wear-resistant paper soaked with the melamine glue, the fourth layer is the fiberboard, and the fifth layer is balance paper soaked with the melamine glue. In the prior art, the manufacturing process of the ecological plate is complex, the operation is complex, and the used melamine glue contains a large amount of formaldehyde, so that the indoor environment is polluted, and the health of human is seriously harmed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a water-based zero-formaldehyde ecological plate and a manufacturing process thereof.
In order to achieve the above objects and other objects, the present invention includes the following technical solutions: the water-based zero-formaldehyde ecological board comprises two facing papers, balance paper and a fiber board, wherein the two facing papers are respectively positioned on an upper surface layer and a lower surface layer, the balance paper and the fiber board are sequentially and alternately arranged between the two facing papers, and the two facing papers are respectively adhered to the adjacent balance paper; the outer surface layers of the two pieces of facing paper are respectively provided with a first waterborne polyurethane layer, the balance paper is respectively adhered to the two pieces of facing paper through a second waterborne polyurethane layer, and the balance paper is adhered to the fiberboard through a third waterborne polyurethane layer.
Preferably, the first aqueous polyurethane layer is an anionic aqueous polyurethane layer.
More preferably, the first aqueous polyurethane layer is composed of high hardness, high abrasion resistance aliphatic anionic aqueous polyurethane with molecular weight of 30000-50000. According to the technical scheme, the aliphatic anionic waterborne polyurethane is adopted, so that the surface layer has good mechanical strength, water resistance, wear resistance and glossiness, and yellowing of the surface layer after illumination is avoided.
Further preferably, the type of the anionic waterborne polyurethane is selected from one or more of KT200, KT637 and KT 803.
Preferably, the second aqueous polyurethane layer is a composite layer consisting of an anionic aqueous polyurethane layer and a cationic aqueous polyurethane layer.
Preferably, the third aqueous polyurethane layer is a cationic aqueous polyurethane layer.
More preferably, the third aqueous polyurethane layer is composed of high-hardness and high-wear-resistance modified cationic aqueous polyurethane, and the epoxy resin modified cationic aqueous polyurethane is adopted in the technical scheme of the invention, so that the adhesive film has good water resistance and can play a good moisture-proof role.
More preferably, the third aqueous polyurethane layer consists of a cationic aqueous polyurethane modified with both epoxy and silicone. The cationic waterborne polyurethane can seal tannin in wood, and the water resistance and hardness of the ecological plate are greatly improved by simultaneously modifying the cationic waterborne polyurethane by epoxy and organic silicon.
Further preferably, the type of the cationic waterborne polyurethane is KT 322.
The invention discloses a manufacturing process of a water-based zero-formaldehyde ecological plate, which comprises the following steps:
1) soaking decorative paper in anionic waterborne polyurethane, scraping off the redundant anionic waterborne polyurethane on the decorative paper by using a scraper so that the anionic waterborne polyurethane is uniformly coated on the decorative paper, and then drying;
2) soaking balance paper in cationic waterborne polyurethane, scraping off the redundant cationic waterborne polyurethane on the balance paper by using a scraper, uniformly coating the cationic waterborne polyurethane resin on the balance paper, and then drying to be semi-dry;
3) and (2) placing a fiber board between the two pieces of facing paper, then placing the balance paper between the fiber board and the facing paper and/or between the adjacent fiber boards, adjusting the positions of the balance paper and the facing paper on the fiber board, fixing a positioning reference, and then performing hot-press gluing to prepare the water-based zero-formaldehyde ecological board.
Preferably, the solid content of the anionic waterborne polyurethane in the step 1) is 35-45%, and the viscosity is 19-22S.
Preferably, the temperature of the drying in the step 1) is 130-160 ℃.
Preferably, the solid content of the cationic waterborne polyurethane in the step 2) is 35-45%, and the viscosity is 17-19S.
Preferably, the temperature for baking to be semi-dry in the step 2) is 130-160 ℃.
Preferably, the hot-pressing gluing in the step 3) adopts a veneering hot-pressing machine, the hot-pressing temperature is 110-150 ℃, the hot-pressing time is 2-4min, and the hot-pressing pressure is 12-15 MPa.
Generally, cationic aqueous polyurethane resin and anionic aqueous polyurethane cannot be mixed for use, and flocculation phenomenon occurs when mixing for use, resulting in gel breakage. The technical scheme adopted by the invention is that after two kinds of waterborne polyurethane are dried into a film, the film is used, the balance paper is dipped with cationic waterborne polyurethane to play a role in sealing wood tannin, and the veneer paper is dipped with anionic resin to play a role in wear resistance and water resistance.
In conclusion, the invention provides a water-based zero-formaldehyde ecological plate and a manufacturing process thereof, and the water-based zero-formaldehyde ecological plate has the beneficial effects that:
the ecological plate comprises facing paper, balance paper and a fiberboard, wherein the whole ecological plate is symmetrically arranged and then is formed by high-temperature and high-pressure pressing, so that the defects that the ecological plate is easy to deform, warp and crack and the like are effectively overcome, and the size stability of the ecological plate is structurally ensured; according to the invention, the first aqueous polyurethane layer formed by the anionic aqueous polyurethane is adopted to replace wear-resistant paper in the prior art, so that good water resistance, wear resistance, high hardness and glossiness effects are achieved; the invention adopts the environment-friendly waterborne polyurethane, so that the formaldehyde release of the ecological plate can reach below 0.1mg/L, which is far beyond the standard of 0.5mg/L of the national standard E0 level. Furthermore, the invention simplifies the manufacturing process of the ecological plate and greatly improves the production efficiency.
Drawings
Fig. 1 is a schematic diagram of the structure of the aqueous zero-formaldehyde ecological plate in example 1 of the present invention.
Fig. 2 is a schematic diagram of the structure of the aqueous zero-formaldehyde ecological plate in example 2 of the present invention.
In the figure, 1, facing paper 2, balance paper 3 and fiber board.
Detailed Description
The invention is further illustrated by the following examples. It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, the waterborne zero-formaldehyde ecological board comprises facing paper, balance paper, a fiberboard, balance paper and facing paper which are sequentially adhered, wherein the outer surface layers of the two facing papers are respectively provided with a first waterborne polyurethane layer, the balance paper is respectively adhered to the two facing papers through a second waterborne polyurethane layer, and the balance paper is adhered to the fiberboard through a third waterborne polyurethane layer.
Wherein the first aqueous polyurethane layer consists of anionic aqueous polyurethane of type KT 200. The second aqueous polyurethane layer is a composite layer consisting of a type KT200 anionic aqueous polyurethane layer and a type KT322 cationic aqueous polyurethane layer, and the third aqueous polyurethane layer consists of a type KT322 cationic aqueous polyurethane layer.
The manufacturing process of the water-based zero-formaldehyde ecological plate comprises the following steps:
1) soaking the facing paper in anionic waterborne polyurethane with the solid content of 35%, the viscosity of 20S and the model KT200, scraping off redundant anionic waterborne polyurethane on the facing paper by using a scraper so that the model anionic waterborne polyurethane is uniformly coated on the facing paper, and then heating and drying at the temperature of 140 ℃;
2) soaking balance paper in 35% solid content, 18S viscosity and KT322 type cationic waterborne polyurethane, scraping off excessive cationic waterborne polyurethane on the balance paper by using a scraper to uniformly coat the cationic waterborne polyurethane resin on the balance paper, and then heating and drying to be semi-dry at 140 ℃;
3) and (2) placing the fiber board between two pieces of facing paper, placing balance paper between the fiber board and the facing paper, adjusting the positions of the balance paper and the facing paper on the fiber board, fixing a positioning reference, and performing hot-pressing gluing by using a 900-ton veneering hot press, wherein the hot-pressing temperature is 125 ℃, the hot-pressing time is 3min, and the hot-pressing pressure is 12MPa, so as to prepare the water-based zero-formaldehyde ecological board.
Example 2
As shown in fig. 2, the waterborne zero-formaldehyde ecological board comprises sequentially adhered facing paper, balance paper, a fiber board, balance paper and facing paper, wherein the outer surface layers of the two facing papers are respectively provided with a first waterborne polyurethane layer, the balance paper is respectively adhered to the two facing papers through a second waterborne polyurethane layer, and the balance paper is adhered to the fiber board through a third waterborne polyurethane layer.
Wherein, the first aqueous polyurethane layer is composed of anion aqueous polyurethane of model KT 637. The second aqueous polyurethane layer is a composite layer composed of type KT637 anionic aqueous polyurethane and type KT322 cationic aqueous polyurethane, and the third aqueous polyurethane layer is a type KT322 cationic aqueous polyurethane layer.
The manufacturing process of the water-based zero-formaldehyde ecological plate comprises the following steps:
1) soaking the facing paper in anionic waterborne polyurethane with the solid content of 35%, the viscosity of 20S and the model KT637, scraping off redundant anionic waterborne polyurethane on the facing paper by using a scraper to uniformly coat the model anionic waterborne polyurethane on the facing paper, and then heating and drying at the temperature of 130 ℃;
2) soaking balance paper in 35% solid content, 18S viscosity and KT322 type cationic waterborne polyurethane, scraping off excessive cationic waterborne polyurethane on the balance paper by using a scraper to uniformly coat cationic waterborne polyurethane resin on the balance paper, and then heating and drying to be semi-dry at 130 ℃;
3) and (2) placing the fiber board between two pieces of facing paper, placing balance paper between the fiber board and the facing paper, adjusting the positions of the balance paper and the facing paper on the fiber board, fixing a positioning reference, and performing hot-pressing gluing by using a 900-ton veneering hot press, wherein the hot-pressing temperature is 125 ℃, the hot-pressing time is 3min, and the hot-pressing pressure is 13MPa, so as to prepare the water-based zero-formaldehyde ecological board.
In conclusion, the cationic waterborne polyurethane is adopted to replace the original melamine glue, so that the effects of high hardness and high strength can be achieved, the environmental pollution can be avoided, and the harm of formaldehyde to human bodies can be reduced; the invention adopts the environment-friendly waterborne polyurethane, so that the formaldehyde release of the ecological plate can reach below 0.1mg/L, which is far beyond the standard of 0.5mg/L of the national standard E0 level; the invention simplifies the manufacturing process of the ecological plate and greatly improves the production efficiency. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (7)
1. The water-based zero-formaldehyde ecological board is characterized by comprising two facing papers, balance paper and a fiberboard, wherein the two facing papers are respectively positioned on an upper surface layer and a lower surface layer, the balance paper and the fiberboard are sequentially and alternately arranged between the two facing papers, and the two facing papers are respectively adhered to the adjacent balance paper; the outer surface layers of the two pieces of facing paper are respectively provided with a first waterborne polyurethane layer, the balance paper is respectively adhered to the two pieces of facing paper through a second waterborne polyurethane layer, and the balance paper is adhered to the fiberboard through a third waterborne polyurethane layer;
wherein the first aqueous polyurethane layer is an anionic aqueous polyurethane layer; the second waterborne polyurethane layer is a composite layer consisting of an anionic waterborne polyurethane layer and a cationic waterborne polyurethane layer; the third aqueous polyurethane layer is a cationic aqueous polyurethane layer; the first aqueous polyurethane layer is composed of high-hardness and high-wear-resistance aliphatic anionic aqueous polyurethane, and the molecular weight of the first aqueous polyurethane layer is 30000-50000; the third waterborne polyurethane layer is formed by simultaneously modifying cationic waterborne polyurethane by epoxy and organic silicon;
the water-based zero-formaldehyde ecological plate is prepared by the following preparation process:
1) soaking decorative paper in anionic waterborne polyurethane, scraping off the redundant anionic waterborne polyurethane on the decorative paper by using a scraper so that the anionic waterborne polyurethane is uniformly coated on the decorative paper, and then drying;
2) soaking balance paper in cationic waterborne polyurethane, scraping off the redundant cationic waterborne polyurethane on the balance paper by using a scraper, uniformly coating the cationic waterborne polyurethane resin on the balance paper, and then drying to be semi-dry;
3) and (2) placing a fiber board between the two pieces of facing paper, then placing the balance paper between the fiber board and the facing paper and/or between the adjacent fiber boards, adjusting the positions of the balance paper and the facing paper on the fiber board, fixing a positioning reference, and then performing hot-press gluing to prepare the water-based zero-formaldehyde ecological board.
2. The manufacturing process of the water-based zero-formaldehyde ecological plate as claimed in claim 1, characterized by comprising the following steps:
1) soaking decorative paper in anionic waterborne polyurethane, scraping off the redundant anionic waterborne polyurethane on the decorative paper by using a scraper so that the anionic waterborne polyurethane is uniformly coated on the decorative paper, and then drying;
2) soaking balance paper in cationic waterborne polyurethane, scraping off the redundant cationic waterborne polyurethane on the balance paper by using a scraper, uniformly coating the cationic waterborne polyurethane resin on the balance paper, and then drying to be semi-dry;
3) and (2) placing a fiber board between the two pieces of facing paper, then placing the balance paper between the fiber board and the facing paper and/or between the adjacent fiber boards, adjusting the positions of the balance paper and the facing paper on the fiber board, fixing a positioning reference, and then performing hot-press gluing to prepare the water-based zero-formaldehyde ecological board.
3. The manufacturing process of the waterborne zero-formaldehyde ecological plate as claimed in claim 2, wherein the solid content of the anionic waterborne polyurethane in the step 1) is 35-45%, and the viscosity is 19-22S.
4. The manufacturing process of the water-based zero-formaldehyde ecological plate as claimed in claim 2, wherein the drying temperature in the step 1) is 130-160 ℃.
5. The manufacturing process of the waterborne zero-formaldehyde ecological plate as claimed in claim 2, wherein the solid content of the cationic waterborne polyurethane in the step 2) is 35-45%, and the viscosity is 17-19S.
6. The process for manufacturing the water-based zero-formaldehyde ecological plate as claimed in claim 2, wherein the temperature for baking to be semi-dry in the step 2) is 130-160 ℃.
7. The manufacturing process of the water-based zero-formaldehyde ecological board as claimed in claim 2, wherein the hot-pressing gluing in the step 3) adopts a veneering hot-pressing machine, the hot-pressing temperature is 110-.
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| CN201611184530.1A CN107060252B (en) | 2016-12-20 | 2016-12-20 | Water-based zero-formaldehyde ecological plate and manufacturing process thereof |
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| CN201611184530.1A CN107060252B (en) | 2016-12-20 | 2016-12-20 | Water-based zero-formaldehyde ecological plate and manufacturing process thereof |
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| CN110293725A (en) * | 2018-03-22 | 2019-10-01 | 汪良 | A kind of composite board and preparation method thereof |
| CN109203121A (en) * | 2018-09-18 | 2019-01-15 | 德华兔宝宝装饰新材股份有限公司 | A kind of environment-friendlyhousehold household plate and its manufacturing method |
| CN113618856A (en) * | 2021-08-18 | 2021-11-09 | 江苏华缘高科股份有限公司 | Negative ion moisture-proof ecological plate and preparation method and application thereof |
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| DE102006002416A1 (en) * | 2006-01-18 | 2007-07-19 | Kaindl Flooring Gmbh | Method for producing a cladding element |
| IT1391700B1 (en) * | 2008-08-08 | 2012-01-17 | Lamberti Spa | AQUEOUS DISPERSIONS OF ANIONIC POLYURETHANE |
| CN102922567B (en) * | 2012-11-07 | 2015-01-28 | 广东尚高科技有限公司 | Environment-friendly waterproof solid wood balance plate and preparation method thereof |
| CN203380973U (en) * | 2013-05-31 | 2014-01-08 | 曾育 | Ecological board |
| CN105461862A (en) * | 2015-12-10 | 2016-04-06 | 武汉仕全兴聚氨酯科技股份有限公司 | One-component water-based cationic polyurethane-fluorinated acrylate resin and preparation method thereof |
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