CN114541151A - Low-temperature-resistant synthetic leather for vehicles and preparation method thereof - Google Patents
Low-temperature-resistant synthetic leather for vehicles and preparation method thereof Download PDFInfo
- Publication number
- CN114541151A CN114541151A CN202210139899.XA CN202210139899A CN114541151A CN 114541151 A CN114541151 A CN 114541151A CN 202210139899 A CN202210139899 A CN 202210139899A CN 114541151 A CN114541151 A CN 114541151A
- Authority
- CN
- China
- Prior art keywords
- layer
- temperature
- synthetic leather
- low
- surface layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002649 leather substitute Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims description 27
- 239000010410 layer Substances 0.000 claims abstract description 88
- 239000002344 surface layer Substances 0.000 claims abstract description 76
- 238000005187 foaming Methods 0.000 claims abstract description 56
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000002335 surface treatment layer Substances 0.000 claims abstract description 38
- 239000004744 fabric Substances 0.000 claims abstract description 35
- 239000000178 monomer Substances 0.000 claims abstract description 22
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 20
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 16
- 238000004381 surface treatment Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 8
- 238000007761 roller coating Methods 0.000 abstract description 3
- 230000036314 physical performance Effects 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 description 27
- 229920002635 polyurethane Polymers 0.000 description 26
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000002904 solvent Substances 0.000 description 12
- 239000003431 cross linking reagent Substances 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000005034 decoration Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 150000001718 carbodiimides Chemical class 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 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 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/142—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer
- D06N3/143—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes mixture of polyurethanes with other resins in the same layer with polyurethanes and other polycondensation or polyaddition products, e.g. aminoplast
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention provides low-temperature-resistant synthetic leather for vehicles, which comprises a base cloth layer, a foaming layer connected with the base cloth layer, a surface layer connected with the foaming layer and a surface treatment layer connected with the surface layer, wherein the foaming layer is a composite material; the base fabric layer, the foaming layer and the surface layer are prepared into a base blank of synthetic leather by a coating method; the foaming layer is a monomer PTMEG in a water-based solvent-free polyurethane resin: the mass ratio of PC is 3: 2-4: 1; the surface layer is a monomer PTMEG in a water-based solvent-free polyurethane resin: the mass ratio of PC is 1: 4-2: 3. The low-temperature-resistant synthetic leather for the vehicle has a multi-structure, the base cloth layer, the foaming layer and the surface layer are prepared by a coating method, the surface treatment layer is formed by multiple roller coating printing, the physical performance requirements of the interior trim product for the vehicle are met, the type and the proportion of the resin monomers are required, and the product structure is reasonably designed, so that the product can meet the physical performance requirements and can also keep soft hand feeling.
Description
Technical Field
The invention relates to the technical field of synthetic leather processing, in particular to low-temperature-resistant synthetic leather for vehicles and a preparation method of the low-temperature-resistant synthetic leather for vehicles.
Background
The color and the decoration design of the automotive interior need to fully consider the requirements of humanity, the quality of the interior is mainly reflected in the aspects of the color, the texture, the luster, the material, the appearance decoration and the like of interior parts, a safe, comfortable and pleasant driving space is created for customers, and then a high-quality feeling is created, so that the automobile interior is an important means for winning the customers.
In the existing oily synthetic leather product, raw materials contain a certain amount of solvent as a dispersing agent, and although most of the solvent is volatilized in the processing process, part of the solvent still remains in the product. This is not in line with the actual demands of modern consumers for more and more attention on environmental protection and health and the development trend of low volatility and high environmental protection in the automobile industry. Polyurethane (abbreviated as PU) is a short name for Polyurethane, and is widely used in many fields of national economy due to its excellent properties. In order to achieve high environmental protection, it is necessary to use a water-based or solvent-free polyurethane, and since a water-based resin or solvent-free polyurethane resin does not have a solvent as a dispersant, the film-forming rate and strength are inferior to those of solvent-based polyurethanes. Therefore, the invention provides the low-temperature-resistant synthetic leather for the vehicle and a preparation method of the low-temperature-resistant synthetic leather for the vehicle.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, uses water-based resin or solvent-free polyurethane resin to replace solvent-based polyurethane resin to achieve high environmental protection, and reasonably designs the type and proportion of resin monomers and the structure of a product to ensure that the product has physical properties and hand feeling equivalent to those of solvent-based products and has excellent low-temperature performance.
In order to achieve the aim, the invention provides low-temperature-resistant synthetic leather for vehicles, which comprises a base cloth layer, a foaming layer connected with the base cloth layer, a surface layer connected with the foaming layer and a surface treatment layer connected with the surface layer; the base fabric layer, the foaming layer and the surface layer are prepared into a base blank of the synthetic leather through a coating method.
The thickness range of the base cloth layer is 700 mu m-1100 mu m, and the weight range is 200g/m2～500g/m2The circular knitted fabric, warp knitted fabric, woven fabric, or nonwoven fabric of (1).
The foaming layer is a water-based solvent-free polyurethane resin, wherein the weight ratio of a monomer PTMEG: the mass ratio of PC is 3: 2-4: 1;
the surface layer is a water-based solvent-free polyurethane resin, wherein the mass ratio of a monomer PTMEG: the mass ratio of the PC is 1: 4-2: 3;
the surface treatment layer is an acrylic resin modified environment-friendly water-based polyurethane resin mixed by polycarbonate, polyether and polyester.
In order to achieve the above object, the present invention also provides a preparation method of the low temperature resistant synthetic leather for vehicles, which comprises the following steps:
surface layer liquid mixing, foaming layer liquid mixing, release paper preparation, surface layer coating, foaming layer coating, base fabric attaching and release paper stripping.
Preparing a surface treating agent according to a formula, printing the surface treating agent on the prepared synthetic leather base blank by using a silk-mesh roller on the synthetic leather base blank by using a circular roller coating machine, and drying the synthetic leather to obtain the low-temperature-resistant super-environment-friendly synthetic leather.
Specifically, the invention provides a preparation method of low-temperature-resistant synthetic leather for vehicles, which comprises the following steps:
s1 preparing release paper, selecting proper release paper to be assembled on an unreeling machine of the linkage coating machine;
the thickness of the release paper is 0.2 mm-0.5 mm, and the width of the release paper is 1500 mm-1600 mm.
S2, making a surface layer, namely preparing a surface layer solution, defoaming the surface layer solution, coating the surface layer solution on the release paper prepared in the step S1, and drying and forming to obtain the surface layer;
the surface layer comprises aqueous polyurethane resin, pigment, defoaming agent, leveling agent, crosslinking agent, antioxidant and tackifier; the monomer proportion PTMEG to PC in the waterborne polyurethane is 1: 4-2: 3;
the stirring speed of the prepared surface layer solution is 350-450 rpm, the stirring time is 60-65 min, and the viscosity of the surface layer solution is 3000-4000 cps;
the treatment time of the surface layer solution defoaming treatment is 60-65 min. Defoaming the prepared surface layer solution by using a circulating defoaming machine, fully ensuring the defoaming effect, and preventing air from entering the surface layer solution in the conveying process during recycling so as to improve the surface layer coating quality;
the coating processing speed of the surface layer solution is 5 m/min-8 m/min, and the usage amount is 40g/m of dry weight2～60g/m2；
The surface layer is dried and formed at the temperature of 100-130 ℃ for 2-3 min.
S3 manufacturing the foaming layer, which comprises preparing a foaming layer solution, coating the foaming layer solution, and drying and forming the foaming layer to obtain the foaming layer;
the foaming layer comprises solvent-free polyurethane resin, pigment, a defoaming agent, a leveling agent, a cross-linking agent, a catalyst, a flame retardant and a tackifier; the ratio of the monomers PTMEG to PC in the solvent-free polyurethane is 3: 2-4: 1.
The stirring speed of the prepared foaming layer solution is 350 rpm-450 rpm, the coating processing speed of the foaming layer solution is 5 m/min-8 m/min, and the using amount is 145g/m of dry weight2～220g/m2；
The foaming layer is dried and formed at the temperature of 125-135 ℃ for 2.5-3.5 min.
S4, bonding base fabric layers, namely bonding and bonding the surface layer obtained in the step S2, the foaming layer obtained in the step S3 and the base fabric layers together to form a base blank with paper;
the speed of bonding is 5m/min to 8m/min, and the bonding pressure is 0.2MPa to 0.3 MPa;
the thickness of the base cloth layer is 700-1100 μm, and the weight is 200g/m2～400g/m2The circular knitted fabric, warp knitted fabric, woven fabric or non-woven fabric of (1);
the release paper is transfer paper with or without grains and the surface is PP or coated with silicone oil for leather.
And S5, peeling off the release paper, namely peeling off the base blank with the paper, which is prepared in the step S4, from the release paper to obtain the base blank.
And 2, performing surface treatment processing on the surface of the prepared bottom blank to obtain the ultra-environment-friendly low-temperature-resistant synthetic leather for vehicles.
The surface treatment layer comprises polyurethane, a cross-linking agent, a tackifier, a hand feeling agent and water;
the cross-linking agent is a multifunctional carbodiimide polymer;
the tackifier is an alkaline tackifier, such as an acrylic polymer;
the hand feeling agent is silicon series and silicon polymer thereof.
The surface treatment process is a process of processing a surface treatment layer on the base blank by using a circular roll coater equipped with a silk roll. The method specifically comprises the following steps: s6 surface treatment, and processing a surface treatment layer on the base material obtained in step S5 using a circular roll coater equipped with a silk roll.
The processing treatment of the surface treatment layer comprises preparing surface treatment layer liquid, surface treatment coating and baking;
the stirring speed of the surface treatment layer liquid is 350-450 rpm, the stirring time is 40-60 min, and the viscosity of the surface treatment layer liquid is 300-1000 cps;
the speed of the surface treatment coating is 8m/min to 11m/min, and the using amount is 30g/m2～60g/m2；
The baking forming temperature of the surface treatment layer is 80-120 ℃, and the time is 2-3 min.
The polyurethane resin is prepared by polymerizing polytetramethylene ether glycol (PTMEG) instead of Polyether (PE) which is conventionally used as a soft segment and Polycarbon (PC) which is used as a hard segment according to a certain proportion, has the advantages of hydrolysis resistance, aging resistance, good elasticity and wear resistance, and is suitable for the use requirement of a low-temperature environment.
Compared with the prior art, the invention has the following beneficial effects:
1. the low-temperature-resistant synthetic leather for the automobile interior decoration, which is prepared by the invention, has a multiple structure, the base cloth layer, the foaming layer and the surface layer are prepared by a coating method, and the surface treatment layer is formed by multiple roller coating printing, so that the low-temperature-resistant environment-friendly physical property requirement of the automobile interior decoration product is met, the type and the proportion of resin monomers are required, and the product structure is reasonably designed, so that the product can meet the physical property requirement and can also keep soft hand feeling.
2. The present invention uses a solvent-free aqueous or solvent-free polyurethane instead of a solvent-dispersed polyurethane as a resin raw material, and does not use other solvent-containing raw materials. The use of solvent is blocked from the source. A water-based or solvent-free polyurethane resin is used for replacing a solvent dispersion polyurethane resin, polytetramethylene ether glycol (PTMEG) is selected for replacing Polyether (PE) which is conventionally used as a polyurethane resin which is polymerized by soft segment and Polycarbon (PC) which is used as a hard segment in a certain proportion, and the synthetic leather product which is high in environmental protection and suitable for being used in a low-temperature environment and used for the interior decoration of the qualified automobile is produced. The new product widens the product types of companies, improves the satisfaction degree of customers and increases the sales volume.
3. In order to achieve high environmental protection, it is necessary to use water-based or solvent-free polyurethanes. The aqueous resin or solvent-free polyurethane resin does not contain a solvent as a dispersant, and therefore, the film-forming speed and strength are inferior to those of solvent-based polyurethane. In order to meet the physical property requirements of automotive interior products, the proportion of soft segment monomers and hard segment monomers of the resin and the structure of the product need to be reasonably designed, so that the product can meet the requirements of conventional physical properties and can also meet the requirements of environmental protection and low-temperature use.
Drawings
FIG. 1 is a schematic cross-sectional view of the low temperature resistant synthetic leather for vehicles according to the present invention;
the labels in the figure are: 1. a base cloth layer; 2. a foamed layer; 3. a surface layer; 4. a surface treatment layer; 5. and (7) bottom blank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be understood that the following examples are intended to further illustrate the present invention and should not be construed as limiting the scope of the present invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing description are intended to be covered by the present invention. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
The invention provides a preparation method of low-temperature-resistant synthetic leather for vehicles (shown in figure 1), which comprises the following steps:
first, the base 5 is processed. The process comprises the steps of S1 release paper preparation, S2 surface layer 3 coating, S3 foaming layer 2 coating, S4 base cloth 1 attaching and S5 release paper peeling.
Wherein, the surface layer 3 and the foaming layer 2 are monomer modified water-based or solvent-free polyurethane. The base cloth layer 1 has a thickness range of 700 to 1100 mu m and a weight range of 200g/m2～400g/m2The circular knitted fabric, warp knitted fabric, woven fabric, or nonwoven fabric of (1). The release paper is transfer paper with or without grains and the surface is PP or coated with silicone oil for leather.
The surface layer 3 comprises waterborne polyurethane resin, pigment, a defoaming agent, a flatting agent, a cross-linking agent, an antioxidant, a tackifier and the like. The monomer ratio PTMEG/PC in the used waterborne polyurethane is 1/4-2/3.
The foaming layer 2 comprises solvent-free polyurethane resin, pigment, a defoaming agent, a leveling agent, a cross-linking agent, a catalyst, a flame retardant, a tackifier and the like. The monomer ratio PTMEG/PC in the solvent-free polyurethane is 3/2-4/1.
The preparation method of the base blank 5 comprises the following steps:
s1 release paper is prepared, and the release paper is selected and assembled on an unreeling machine of the linkage coating machine. The thickness of the release paper is 0.2 mm-0.5 mm, and the width of the release paper is 1500 mm-1600 mm.
S2, preparing a surface layer 3, namely preparing a surface layer solution, defoaming the surface layer solution, coating the surface layer solution on the release paper prepared in the step S1, and drying and forming to obtain the surface layer 3; the stirring speed of the prepared surface layer solution is 350-450 rpm, the stirring time is 60-65 min, and the viscosity of the surface layer solution is 3000-4000 cps.
In the modification, the treatment time of the surface layer 3 solution defoaming treatment in step S2 is 60 to 65 min. The prepared surface layer solution is defoamed by a circulating defoaming machine, the defoaming effect is fully ensured, and air is prevented from entering the surface layer solution in the conveying process during recycling, so that the surface layer coating quality is improved. The coating speed of the surface layer solution is 5 m/min-8 m/min, and the using amount is 40g/m of dry weight2～60g/m2. The surface layer is dried and formed at the temperature of 100-130 ℃ for 2-3 min.
The preparation of the S3 foaming layer 2 comprises the steps of preparing a foaming layer solution, coating the foaming layer solution anddrying and forming the foaming layer to obtain a foaming layer 2; the stirring speed of the prepared foaming layer solution is 350 rpm-450 rpm. The foaming layer solution coating processing speed is 5 m/min-8 m/min, and the using amount is 145g/m of dry weight2～220g/m2. The foaming layer is dried and formed at the temperature of 125-135 ℃ for 2.5-3.5 min.
And S4, bonding the base fabric layer 1, bonding the surface layer 3 obtained in the step S2, the foaming layer 2 obtained in the step S3 and the base fabric layer 1 together to form a base blank with paper, wherein the bonding speed is 5-8 m/min, and the bonding pressure is 0.2-0.3 MPa.
And S5, peeling off the release paper, namely peeling off the base blank with the paper, which is prepared in the step S4, from the release paper to obtain a base blank 5.
Then, the surface of the produced base material 5 is subjected to S6 surface treatment.
The surface treatment layer 5 comprises polyurethane, a cross-linking agent, a tackifier, a hand feeling agent and water. The cross-linking agent is multifunctional carbodiimide polymer, and the tackifier is alkaline tackifier, such as acrylic polymer; the hand feeling agent is silicon series and silicon polymer thereof.
S6 surface treatment, the surface treatment layer 5 is processed on the base 5 obtained in step S5 using a circular roll coater equipped with a silk roll. The surface treatment layer 5 is treated by preparing a surface treatment layer liquid, applying a surface treatment, and baking. The stirring speed of the surface treatment layer liquid is 350 rpm-450 rpm, the stirring time is 40 min-60 min, and the viscosity of the surface treatment layer liquid is 300 cps-1000 cps; the coating speed of the surface treatment layer liquid is 8-11 m/min, and the using amount is 30g/m2～60g/m2The baking forming temperature of the surface treatment layer is 80-120 ℃, and the time is 2-3 min.
The synthetic leather is a finished product of the low-temperature-resistant super-environment-friendly synthetic leather for vehicles, which is prepared through the steps S1-S6.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be noted that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention.
Example 1:
the embodiment provides low-temperature-resistant synthetic leather for vehicles and a preparation method thereof, wherein the preparation method comprises the following steps:
first, the base 5 is processed. The process comprises the steps of S1 release paper preparation, S2 surface layer 3 coating, S3 foaming layer 2 coating, S4 base cloth 1 attaching and S5 release paper peeling.
Wherein the surface layer 3 is water-based polyurethane, and the foaming layer 2 is solvent-free polyurethane. The base cloth layer 1 has a thickness of 900 μm and a weight of 290g/m2And (5) circular knitting cloth. The release paper is transfer paper for leather with grains and PP on the surface.
The monomer ratio PTMEG/PC of the aqueous polyurethane used for the top layer 3 was 2/3.
The monomer ratio PTMEG/PC of the solvent-free polyurethane used for the foam layer 2 was 4/1.
The preparation method of the base blank 5 comprises the following steps:
s1 release paper is prepared, and the release paper is selected and assembled on an unreeling machine of the linkage coating machine. The thickness of the release paper is 0.3mm, and the width of the release paper is 1580 mm.
S2, preparing a surface layer 3, namely preparing a surface layer solution, defoaming the surface layer solution, coating the surface layer solution on the release paper prepared in the step S1, and drying and forming to obtain the surface layer 3; the stirring speed of the prepared surface layer solution is 400rpm, the stirring time is 60min, and the viscosity of the surface layer solution is 3500 cps.
As a modification, the processing time of the surface layer 3 solution defoaming processing in step S2 is 60 min. The prepared surface layer solution is defoamed by a circulating defoaming machine, the defoaming effect is fully ensured, and air is prevented from entering the surface layer solution in the conveying process during recycling, so that the surface layer coating quality is improved. The coating speed of the surface layer solution was 7m/min, and the amount used was 50g/m2 in terms of dry weight. The surface layer is dried and formed at 120 deg.C for 3 min.
S3 manufacturing the foaming layer 2, namely preparing a foaming layer solution, coating the foaming layer solution, and drying and forming the foaming layer to obtain the foaming layer 2; the stirring speed of the prepared foaming layer solution was 450 rpm. The speed of the foaming layer solution coating processing is 7m/min,the using amount is 200g/m of dry weight2. The foaming layer is dried and formed at the temperature of 100 ℃ for 2.5 min.
S4 bonding the base fabric layer 1, bonding the surface layer 3 obtained in the step S2, the foaming layer 2 obtained in the step S3 and the base fabric layer 1 together to form a base blank with paper, wherein the bonding speed is 7m/min, and the bonding pressure is 0.3 MPa.
And S5, peeling off the release paper, namely peeling off the base blank with the paper, which is prepared in the step S4, from the release paper to obtain a base blank 5.
Then, the surface of the obtained base 5 is subjected to S6 surface treatment.
The surface treatment layer 5 comprises polyurethane, a cross-linking agent, a tackifier, a hand feeling agent and water. The cross-linking agent is a multifunctional carbodiimide polymer, and the tackifier is an acrylic polymer; the hand feeling agent is silicon series and silicon polymer thereof.
S6 surface treatment, the surface treatment layer 5 is processed on the base 5 obtained in step S5 using a circular roll coater equipped with a silk roll. The surface treatment layer 5 is treated by preparing a surface treatment layer liquid, applying a surface treatment, and baking. The stirring speed of the surface treatment layer liquid is 400rpm, the stirring time is 50min, and the viscosity of the surface treatment layer liquid is 800 cps; the coating speed of the surface treatment layer liquid is 10m/min, and the using amount is 40g/m2The surface treatment layer is baked and formed at the temperature of 100 ℃ for 3 min.
The synthetic leathers prepared according to the above method were subjected to property tests, and the results are shown in Table 1.
Example 2:
the present embodiment provides a low temperature resistant synthetic leather for vehicles and a preparation method thereof, which is different from embodiment 1 in that:
the monomer ratio PTMEG/PC of the aqueous polyurethane used for the top layer 3 was 3/7.
The monomer ratio PTMEG/PC of the solvent-free polyurethane used for the foam layer 2 was 7/3.
The synthetic leathers prepared according to the above method were subjected to property tests, and the results are shown in Table 1.
Example 3:
the present embodiment provides a low temperature resistant synthetic leather for vehicles and a preparation method thereof, which is different from embodiment 1 in that:
the monomer ratio PTMEG/PC of the aqueous polyurethane used for the top layer 3 was 1/4.
The monomer ratio PTMEG/PC of the solvent-free polyurethane used for the foam layer 2 was 3/2.
The synthetic leathers prepared according to the above method were subjected to property tests, and the results are shown in Table 1.
TABLE 1 test results of the low temperature resistant synthetic leather for vehicles
The low-temperature deflection at-20 ℃ is tested with reference to DIN EN 32100. Wherein "excellent" represents no crack above 5000 times; ". o" represents 3000 times more without cracks; ". represents 1000 times more without cracks.
The resistance to high temperature and humidity was tested with reference to the conditions (90 ± 2 ℃ 90 ± 5% RH 672h) in VCS 1027, 2729 standard. Wherein "very good" represents no change in surface after the experiment; ". o" represents slight surface change (gloss, color) but no change in texture after the test; "Δ" represents the apparent change in surface after the experiment, but the texture was not much changed.
The TVOC and chemical detection were tested using the VCS 1027, 2769 standard. Wherein the TOC requirement is less than or equal to 10000 mug/m3Other single substances are required to be less than or equal to 50 mu g/m3. "ND" means not detected.
The examples show that compared with the conventional polyurethane synthetic leather, the low-temperature-resistant super-environment-friendly synthetic leather provided by the invention has the advantage that the environmental protection property (volatile organic compounds) is obviously improved, wherein the DMF (dimethyl formamide) is not detected. Compared with the common polyurethane synthetic leather, the low temperature resistance is obviously improved. And the high temperature and high humidity resistance is not lost or even better than that of the conventional product. The product has high and low temperature resistance, so that the product has wider application prospect.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The low-temperature-resistant synthetic leather for the vehicle comprises a base cloth layer, a foaming layer connected with the base cloth layer, a surface layer connected with the foaming layer and a surface treatment layer connected with the surface layer; the method is characterized in that: the base cloth layer, the foaming layer and the surface layer are prepared into a base blank of the synthetic leather by a coating method; the foaming layer is a monomer PTMEG in a water-based solvent-free polyurethane resin: the mass ratio of PC is 3: 2-4: 1; the surface layer is prepared from a monomer PTMEG in a water-based solvent-free polyurethane resin: the mass ratio of the PC is 1: 4-2: 3; the surface treatment layer is an acrylic resin modified environment-friendly water-based polyurethane resin mixed by polycarbonate, polyether and polyester.
2. The low-temperature-resistant synthetic leather for vehicles according to claim 1, which is characterized in that: the thickness range of the base cloth layer is 700 mu m-1100 mu m, and the weight range is 200g/m2～500g/m2。
3. The preparation method of the low-temperature-resistant synthetic leather for the vehicle as claimed in claim 1 or 2, which is characterized by comprising the following steps:
step 1, firstly, preparing a bottom blank;
and 2, performing surface treatment processing on the surface of the base blank to obtain the ultra-environment-friendly low-temperature-resistant synthetic leather for vehicles.
4. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 3, which is characterized by comprising the following steps: the preparation method of the base blank comprises the following steps:
s1 preparing release paper, selecting proper release paper to be assembled on an unreeling machine of the linkage coating machine;
s2, making a surface layer, namely preparing a surface layer solution, defoaming the surface layer solution, coating the surface layer solution on the release paper prepared in the step S1, and drying and forming to obtain the surface layer;
s3 manufacturing a foaming layer, which comprises preparing a foaming layer solution, coating the foaming layer solution, and drying and forming the foaming layer to obtain the foaming layer;
s4, bonding base fabric layers, namely bonding and bonding the surface layer obtained in the step S2, the foaming layer obtained in the step S3 and the base fabric layers together to form a base blank with paper;
and S5, peeling off the release paper, namely peeling off the base blank with the paper, which is prepared in the step S4, from the release paper to obtain the base blank.
5. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 4, which is characterized by comprising the following steps of: the thickness of the release paper is 0.2 mm-0.5 mm, and the width of the release paper is 1500 mm-1600 mm.
6. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 4, which is characterized by comprising the following steps: the stirring speed of the prepared surface layer solution is 350-450 rpm, the stirring time is 60-65 min, the viscosity of the surface layer solution is 3000-4000 cps, and the treatment time of the surface layer solution defoaming treatment is 60-65 min.
7. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 6, which is characterized by comprising the following steps: the coating processing speed of the surface layer solution is 5 m/min-8 m/min, and the using amount is 40g/m of dry weight2～60g/m2。
8. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 7, which is characterized by comprising the following steps: the surface layer is dried and formed at the temperature of 100-130 ℃ for 2-3 min.
9. The preparation method of the low-temperature-resistant synthetic leather for the vehicle according to claim 3, which is characterized by comprising the following steps: the surface treatment process is a process of processing a surface treatment layer on the base blank by using a circular roll coater equipped with a silk roll.
10. The vehicular lamp according to claim 9The preparation method of the low-temperature-resistant synthetic leather is characterized by comprising the following steps: the processing treatment of the surface treatment layer comprises preparing surface treatment layer liquid, surface treatment coating and baking; the stirring speed of the surface treatment layer liquid is 350-450 rpm, the stirring time is 40-60 min, and the viscosity of the surface treatment layer liquid is 300-1000 cps; the speed of the surface treatment coating is 8m/min to 11m/min, and the using amount is 30g/m2～60g/m2(ii) a The baking forming temperature of the surface treatment layer is 80-120 ℃, and the time is 2-3 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210139899.XA CN114541151A (en) | 2022-02-16 | 2022-02-16 | Low-temperature-resistant synthetic leather for vehicles and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210139899.XA CN114541151A (en) | 2022-02-16 | 2022-02-16 | Low-temperature-resistant synthetic leather for vehicles and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114541151A true CN114541151A (en) | 2022-05-27 |
Family
ID=81676105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210139899.XA Pending CN114541151A (en) | 2022-02-16 | 2022-02-16 | Low-temperature-resistant synthetic leather for vehicles and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114541151A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086738A (en) * | 2014-07-07 | 2014-10-08 | 旭川化学（苏州）有限公司 | Solvent-free environment-friendly polyurethane automobile leather surface resin as well as preparation method and application thereof |
| CN104088161A (en) * | 2014-07-07 | 2014-10-08 | 旭川化学（苏州）有限公司 | Preparation method of solvent-free environment-friendly polyurethane automobile leather |
| CN104963212A (en) * | 2015-07-24 | 2015-10-07 | 江苏尚科聚合新材料有限公司 | Preparation method of solvent-free polyurethane interior trim leather of car |
| CN107226894A (en) * | 2017-07-24 | 2017-10-03 | 合肥安利聚氨酯新材料有限公司 | A kind of soft mirror face synthetic leather solvent-free intermediate layer polyurethane resin and its preparation method and application |
-
2022
- 2022-02-16 CN CN202210139899.XA patent/CN114541151A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086738A (en) * | 2014-07-07 | 2014-10-08 | 旭川化学（苏州）有限公司 | Solvent-free environment-friendly polyurethane automobile leather surface resin as well as preparation method and application thereof |
| CN104088161A (en) * | 2014-07-07 | 2014-10-08 | 旭川化学（苏州）有限公司 | Preparation method of solvent-free environment-friendly polyurethane automobile leather |
| CN104963212A (en) * | 2015-07-24 | 2015-10-07 | 江苏尚科聚合新材料有限公司 | Preparation method of solvent-free polyurethane interior trim leather of car |
| CN107226894A (en) * | 2017-07-24 | 2017-10-03 | 合肥安利聚氨酯新材料有限公司 | A kind of soft mirror face synthetic leather solvent-free intermediate layer polyurethane resin and its preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11628647B2 (en) | Synthetic leather for steering wheel cover having improved durability and method for preparing the same | |
| JP5676055B2 (en) | Method for producing synthetic leather using different liquid silicone rubber coating solutions | |
| CN106029390B (en) | Printable media | |
| CN106349914A (en) | Aqueous matt surface finishing agent for PVC (Polyvinyl Chloride) leather and preparation method thereof | |
| US3311527A (en) | Polyurethane coated fabric | |
| CN110565395B (en) | Production process of PU synthetic leather | |
| CN111169123A (en) | Preparation method of shoe lining leather | |
| CN111206432B (en) | Wet-process Yangbuck synthetic leather and preparation method thereof | |
| KR101582573B1 (en) | Complex functional synthetic leather for crash pad covering and Preparation method thereof | |
| CN111979790A (en) | Light and thin flexible polyurethane leather and preparation method thereof | |
| CN112824591B (en) | Production process of wear-resistant transfer coating umbrella fabric | |
| KR102052464B1 (en) | Coating liquid for synthetic leather, and its method for making synthetic leather using the same | |
| CN114541151A (en) | Low-temperature-resistant synthetic leather for vehicles and preparation method thereof | |
| CN112746506A (en) | Stain-resistant artificial leather with high skin-permeable feeling and preparation method thereof | |
| CN112680085A (en) | High-gloss scratch-resistant surface-enhanced artificial leather and preparation method thereof | |
| CN103709723B (en) | A kind of method of dye sheep bar Glove suede urethane resin and preparation method and making synthetic leather | |
| CN112961307B (en) | Solvent-free polyurethane resin, impregnation slurry, and preparation method and application thereof | |
| CN112900107B (en) | Waterborne polyurethane/organic silicon composite mirror leather and preparation method thereof | |
| CN113123143B (en) | High-peeling-force PU double-sided leather and preparation method thereof | |
| KR100733384B1 (en) | Manufacturing method of artificial leather using silicon emulsion and artificial leather using the same | |
| CN114507989A (en) | Anti-whitening PU synthetic leather and preparation method thereof | |
| CN114507988A (en) | Preparation method of waterborne polyurethane synthetic leather for electronic product back plate | |
| US20220220667A1 (en) | Synthetic leather | |
| CN112745795A (en) | Waterborne polyurethane electrostatic flocking adhesive for injection molding and preparation method | |
| CN107880430B (en) | Raw material composition of synthetic leather surface layer and synthetic leather |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220527 |
|
| RJ01 | Rejection of invention patent application after publication |