CN220597981U - Bio-based polyurethane synthetic leather - Google Patents
Bio-based polyurethane synthetic leather Download PDFInfo
- Publication number
- CN220597981U CN220597981U CN202320591415.5U CN202320591415U CN220597981U CN 220597981 U CN220597981 U CN 220597981U CN 202320591415 U CN202320591415 U CN 202320591415U CN 220597981 U CN220597981 U CN 220597981U
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- China
- Prior art keywords
- layer
- synthetic leather
- bio
- base cloth
- solvent
- Prior art date
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 35
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 18
- 239000004814 polyurethane Substances 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 45
- 239000004744 fabric Substances 0.000 claims abstract description 29
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003063 flame retardant Substances 0.000 claims abstract description 19
- 239000011241 protective layer Substances 0.000 claims abstract description 16
- 229920001410 Microfiber Polymers 0.000 claims abstract description 13
- 239000004677 Nylon Substances 0.000 claims abstract description 13
- 239000003658 microfiber Substances 0.000 claims abstract description 13
- 229920001778 nylon Polymers 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 7
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 4
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 17
- 238000005299 abrasion Methods 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000010985 leather Substances 0.000 description 7
- 230000002195 synergetic effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The utility model discloses biological polyurethane synthetic leather, which comprises base cloth, wherein a solvent-free bonding layer is arranged on the upper surface of the base cloth, an intermediate layer is arranged on the upper surface of the solvent-free bonding layer, a protective layer is arranged on the upper surface of the intermediate layer, the base cloth is flame-retardant base cloth, the intermediate layer is composed of a sea-island microfiber layer and nylon filament cloth, the protective layer is a wear-resistant polyurethane resin coating, and a nano silicon dioxide antibacterial agent is added into the protective layer.
Description
Technical Field
The utility model relates to the technical field of polyurethane synthetic leather, in particular to bio-based polyurethane synthetic leather.
Background
The synthetic leather is made up by using non-woven fabric as base material, using net layer in the imitation natural leather tissue structure and using dry-wet method coating layer as top layer, and using grain surface layer in the imitation natural leather tissue structure, and its front and back surfaces are very similar to those of natural leather, and possesses a certain air permeability, moisture permeability and mechanical property which are stronger than that of natural leather, and its appearance, hand feeling and workability are more similar to those of natural leather.
The polyurethane material is an extremely inflammable organic polymer material, and generates a large amount of toxic smoke and gas in the combustion process, so that the synthetic leather product has great potential safety hazard in the production and use processes, and in addition, the existing synthetic leather has the problems of rough surface, large width shrinkage degree, easy crease and hard hand feeling.
Disclosure of Invention
The utility model aims to provide a bio-based polyurethane synthetic leather for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the biological polyurethane synthetic leather comprises base cloth, wherein a solvent-free bonding layer is arranged on the upper surface of the base cloth, an intermediate layer is arranged on the upper surface of the solvent-free bonding layer, a protective layer is arranged on the upper surface of the intermediate layer, the base cloth is flame-retardant base cloth, the intermediate layer is composed of a sea-island microfiber layer and nylon filament cloth, the protective layer is an abrasion-resistant polyurethane resin coating, and a nano silicon dioxide antibacterial agent is added in the protective layer.
As a further scheme of the utility model: the solvent-free bonding layer is made of aluminum hydroxide and red phosphorus.
As still further aspects of the utility model: the mass ratio of the aluminum hydroxide to the red phosphorus is 3:1.
As still further aspects of the utility model: the nylon filaments are arranged in the middle of the sea-island microfiber layer.
As still further aspects of the utility model: the nylon filament cloth and the island microfiber layer are processed into the middle layer through needling and water needling.
As still further aspects of the utility model: the protective layer is an abrasion-resistant polyurethane resin coating with a microporous structure.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model combines the advantages of needling and hydroentangling into a whole by a processing mode of needling and hydroentangling, so as to improve the surface evenness and compactness of the product, and combines the advantages of high strength and difficult deformation of nylon filament cloth with the advantages of softness, compactness and uniformity of a hydroentangling sea-island microfiber layer by using needling, so that the synthetic leather has better wear resistance, rebound resilience, softness, comfort, crease resistance, static resistance, ageing resistance and high simulation, and has higher use value than natural leather, thereby improving the surface evenness, density and physical indexes of the synthetic leather, and improving the hand feeling and physical properties of the product.
2. By utilizing the synergistic effect of aluminum hydroxide and red phosphorus, the solvent-free flame retardant property is greatly improved, so that the high flame retardant synthetic leather with ecological environment protection and excellent hydrolysis resistance is prepared, the application field of the synthetic leather is expanded, and the synthetic leather has good economic benefit and broad market prospect.
Drawings
FIG. 1 is a schematic structural diagram of a bio-based polyurethane synthetic leather.
FIG. 2 is a schematic structural diagram of an intermediate layer in a bio-based polyurethane synthetic leather.
In the figure: 1. a protective layer; 2. an intermediate layer; 3. a solvent-free adhesive layer; 4. a base cloth; 5. island microfiber layers; 6. nylon filament cloth.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, in the embodiment of the utility model, the bio-based polyurethane synthetic leather comprises a base fabric 4, wherein a solvent-free bonding layer 3 is arranged on the upper surface of the base fabric 4, a middle layer 2 is arranged on the upper surface of the solvent-free bonding layer 3, a protective layer 1 is arranged on the upper surface of the middle layer 2, the solvent-free bonding layer 3 is made of aluminum hydroxide and red phosphorus, the mass ratio of the aluminum hydroxide to the red phosphorus is 3:1, the synergistic effect of the red phosphorus and the aluminum hydroxide can effectively solve the general problem of flame retardant performance of a single flame retardant, the oxygen index of the synthetic leather shows a trend of increasing before decreasing along with the increase of the proportion of the aluminum hydroxide in the mixed flame retardant, the oxygen index value of the synthetic leather is the largest when the proportion of the aluminum hydroxide to the red phosphorus is 3:1, the flame retardant effect is optimal, the flame retardance of the obtained synthetic leather belongs to flame retardance in the oxygen index standard, and the optimal addition amount is 35%, therefore, the synergistic effect of the red phosphorus and the flame retardant performance of the synthetic leather can be improved greatly, and the oxygen index of the solvent-free synthetic leather can be achieved by adding the aluminum hydroxide and the red phosphorus compound flame retardant into the solvent-free polyurethane layer.
The base cloth 4 is flame-retardant base cloth, the middle layer 2 is composed of a sea-island microfiber layer 5 and nylon filament cloth 6, the protective layer 1 is a wear-resistant polyurethane resin coating, the protective layer 1 is added with a nano silicon dioxide antibacterial agent, the antibacterial performance of the synthetic leather is improved, the protective layer 1 is a wear-resistant polyurethane resin coating with a microporous structure, the solvent-free bonding layer 3 is made of aluminum hydroxide and red phosphorus, the mass ratio of the aluminum hydroxide to the red phosphorus is 3:1, the synergistic effect of the red phosphorus and the aluminum hydroxide can effectively solve the problem that the flame retardant performance of a single flame retardant is general, the oxygen index of the synthetic leather shows a trend of increasing before decreasing along with the improvement of the proportion of the aluminum hydroxide in the mixed flame retardant, when the proportion of the aluminum hydroxide to the red phosphorus is 3:1, the oxygen index value is the largest, the flame retardant effect is the best, the flame retardance of the obtained synthetic leather belongs to flame retardance in the oxygen index standard, and the optimal addition amount is 35%, therefore, the synergistic effect of red phosphorus and aluminum hydroxide effectively improves the flame retardant effect of the synthetic leather, the addition of the aluminum hydroxide and red phosphorus compound flame retardant into the solvent-free polyurethane layer can greatly improve the flame retardant property of the solvent-free synthetic leather, the oxygen index can reach more than 27 percent, the nylon filament cloth 6 is arranged at the middle part inside the island microfiber layer 5, the tensile strength of the product is effectively improved, the elongation of the product is reduced, the deformation resistance of the product is improved, the middle layer 2 is manufactured between the nylon filament cloth 6 and the island microfiber layer 5 through needling and hydroentangling composite processing, so that the synthetic leather has better wear resistance, rebound resilience, softness, comfort, crease resistance, static resistance, ageing resistance and high simulation, the use value is higher than that of natural leather, the advantages of two non-woven fabrics of needling and hydroentangling are integrated through the needling and hydroentangling composite processing mode, the advantages of high strength and difficult deformation of the nylon filament cloth 6 are fused with the soft, compact and uniform advantages of the spun-laced sea-island microfiber layer 5 by utilizing needling to improve the surface evenness and the compactness of the product, thereby improving the surface evenness, the density and the physical indexes of the synthetic leather and improving the hand feeling and the physical properties of the product.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The bio-based polyurethane synthetic leather is characterized by comprising a base cloth (4), wherein a solvent-free bonding layer (3) is arranged on the upper surface of the base cloth (4), an intermediate layer (2) is arranged on the upper surface of the solvent-free bonding layer (3), and a protective layer (1) is arranged on the upper surface of the intermediate layer (2); wherein,
the base cloth (4) is flame-retardant base cloth;
the middle layer (2) is composed of a sea-island microfiber layer (5) and nylon filament cloth (6);
the protective layer (1) is an abrasion-resistant polyurethane resin coating, and a nano silicon dioxide antibacterial agent is added into the protective layer (1);
the nylon filament cloth (6) and the island microfiber layer (5) are processed into the middle layer (2) through needling and water needling.
2. A bio-based polyurethane synthetic leather according to claim 1, characterized in that the solvent-free adhesive layer (3) is made of aluminium hydroxide and red phosphorus.
3. The bio-based polyurethane synthetic leather according to claim 2, wherein the mass ratio of the aluminum hydroxide to the red phosphorus is 3:1.
4. The bio-based polyurethane synthetic leather according to claim 1, wherein the nylon filament cloth (6) is arranged at the middle part inside the island microfiber layer (5).
5. Bio-based polyurethane synthetic leather according to claim 1, characterized in that the protective layer (1) is a wear resistant polyurethane resin coating with a microporous structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320591415.5U CN220597981U (en) | 2023-03-23 | 2023-03-23 | Bio-based polyurethane synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320591415.5U CN220597981U (en) | 2023-03-23 | 2023-03-23 | Bio-based polyurethane synthetic leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220597981U true CN220597981U (en) | 2024-03-15 |
Family
ID=90177840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320591415.5U Active CN220597981U (en) | 2023-03-23 | 2023-03-23 | Bio-based polyurethane synthetic leather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220597981U (en) |
-
2023
- 2023-03-23 CN CN202320591415.5U patent/CN220597981U/en active Active
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