CN112832034B - Modified organic silicon resin and application thereof in polyurethane solvent-free decorative leather, furniture leather and automobile leather - Google Patents
Modified organic silicon resin and application thereof in polyurethane solvent-free decorative leather, furniture leather and automobile leather Download PDFInfo
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- CN112832034B CN112832034B CN202011630006.9A CN202011630006A CN112832034B CN 112832034 B CN112832034 B CN 112832034B CN 202011630006 A CN202011630006 A CN 202011630006A CN 112832034 B CN112832034 B CN 112832034B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
- D06N3/128—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 silicon polymers
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- 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
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- 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
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
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- D06N2209/06—Properties of the materials having thermal properties
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Abstract
The invention relates to an organic silicon resin, in particular to a modified organic silicon resin and application thereof in polyurethane solvent-free decorative leather, furniture leather and automobile leather. The modified organic silicon resin comprises the following raw materials in parts by weight: 30-60 parts of organic silicon resin, 10-20 parts of polyether polyol, 10-30 parts of gas-phase white carbon black, 10-40 parts of liquid silica gel, 0.01-0.5 part of platinum catalyst, 0.1-1 part of inhibitor, 10-40 parts of vinyl double seal head, 5-20 parts of high-hydrogen silicone oil, 0.5-2 parts of anti-graffiti auxiliary agent and 1-5 parts of handfeel agent. Compared with pure silica gel leather, the product has the advantages of 80% improvement in scratch resistance, full leather hand feeling and 50% reduction in cost, and the product performance is superior to that of solvent-free leather and pure silica gel leather.
Description
Technical Field
The invention relates to an organic silicon resin, in particular to a modified organic silicon resin and application thereof in polyurethane solvent-free leather.
Background
The conventional leather mainly comprises dermis, PVC leather (substrate+polyvinyl chloride) and oily PU leather (substrate+polyurethane).
The scratch resistance of the solvent-free aqueous PU leather (substrate, solvent-free resin and aqueous resin) on the market for several years reaches more than 20 ten thousand times, the manufacturing process is environment-friendly, does not contain solvent, does not harm personnel, has higher cost performance, does not have special functions, and has better scratch resistance except environment protection, and the difference between the solvent-free aqueous PU leather and the traditional leather is not great.
In addition, synthetic leather composed of organic silicon leather (substrate+silicone resin or silicone rubber) is also appeared on the market, and is commonly called organic silicon leather, and organic silicon leather products have excellent weather resistance (hydrolysis resistance, UV resistance, salt spray resistance), flame retardance, antifouling and easy-to-manage properties, water resistance, skin irritation resistance, mildew resistance, bacteria resistance, safety, environmental protection and the like, but the leather has stiff hand feeling, poor scratch resistance and tearing resistance due to the fact that a large amount of organic silicon materials are used. In addition, the cost of silica gel is high, and the leather prepared by the silica gel cannot be accepted by markets in a large amount.
Disclosure of Invention
The invention aims at a modified organic silicon resin which can be stably combined with an intermediate layer formed by solvent-free polyurethane resin, so that the prepared polyurethane solvent-free decorative leather has the advantage of full silica gel leather.
The invention also provides the modified organic silicon resin and application thereof in the aspect of polyurethane solvent-free leather.
The technical scheme adopted for solving the technical problems is as follows:
the modified organic silicon resin comprises the following raw materials in parts by weight:
30-60 parts of organic silicon resin,
10 to 20 percent of polyether polyol,
10 to 30 percent of gas-phase white carbon black,
10-40 parts of liquid silica gel,
0.01 to 0.5 percent of platinum catalyst,
0.1 to 1 percent of inhibitor,
10-40 parts of vinyl double-seal head,
5 to 20 percent of high hydrogen silicone oil,
0.5 to 2 percent of anti-graffiti auxiliary agent,
1-5 parts of handfeel agent.
In the formula, polyether is used for modifying the silicone resin, and then platinum is used for catalyzing the organic silicon to prepare the modified organic silicon resin.
The preparation method of the modified organic silicon resin comprises the following steps:
a. fully mixing the vinyl double seal heads with gas-phase white carbon black, organic silicon resin, liquid silica gel and a handfeel agent, heating to 180+/-10 ℃, and fully vacuumizing and stirring for more than 4 hours to obtain a material A;
b. fully stirring the high-hydrogen silicone oil, the platinum catalyst and the anti-doodling auxiliary agent for more than 2 hours to prepare a material B;
c. stirring polyether polyol and an inhibitor to prepare a material C;
d. mixing A, B, C three groups according to the proportion of 100:10-20:10-20, fully stirring, adding a proper amount of toner according to design requirements, and mixing colors to obtain the modified organic silicon resin.
The modified organic silicon resin is applied to polyurethane solvent-free decorative leather, furniture leather and automobile leather.
The organic silicon polyurethane solvent-free leather sequentially comprises a modified organic silicon resin layer, a water-based polyurethane resin layer, a solvent-free foaming adhesive layer and base cloth or microfiber cloth from top to bottom, wherein the modified organic silicon resin layer is formed by coating the modified organic silicon resin slurry. The aqueous polyurethane resin layer and the solvent-free foaming adhesive layer are conventional techniques and conventional choices in the art, and are not described in detail herein, but are not essential to the study of the present invention.
The modified organic silicon resin is applied to polyurethane solvent-free decorative leather, furniture leather and automobile leather. The application of the modified organic silicon resin in the aspect of solvent-free leather realizes the effective perfect combination of the silica gel function and the solvent-free polyurethane function, greatly improves the performance and the efficacy of the leather, reduces the cost of leather products, and is beneficial to popularization and application.
A method for preparing organic silicon polyurethane solvent-free leather, which comprises the following steps:
s1, preparing modified organic silicon resin slurry, covering the modified organic silicon resin slurry on release paper, and baking the release paper in an oven at 110-130 ℃ for 3-5min to obtain a modified organic silicon resin layer;
s2, preparing aqueous polyurethane resin slurry, coating the aqueous polyurethane resin slurry on the modified organic silicon resin layer, and drying and curing the aqueous polyurethane resin slurry at the temperature of 110-130 ℃ for 8-10min to form an aqueous polyurethane resin layer;
s3, preparing solvent-free polyurethane resin slurry, coating the solvent-free polyurethane resin slurry on the water-based polyurethane resin layer to form a solvent-free foaming adhesive layer, drying at the temperature of 100-120 ℃ to enable the solvent-free foaming adhesive layer to be compounded with base cloth or microfiber cloth, and then drying at the temperature of 120-140 ℃ for 15-20min to obtain semi-finished leather;
s4, separating the release paper from the semi-finished leather, curing for more than 12 hours at the temperature of 35+/-2 ℃, and then carrying out post-treatment on the organic silicon resin to obtain the finished leather.
The beneficial effects of the invention are as follows:
the modified organic silicon resin provided by the invention is used in polyurethane solvent-free leather, not only can play the advantages of solvent-free leather such as environmental protection, low VOC emission, scratch resistance, full hand feeling and the like, but also can play the functions of organic silicon (antifouling, smooth, high and low temperature resistant, weather resistant, antibacterial, mildew-proof, ultraviolet resistant, flame retardant) and the like on the leather surface. Compared with pure silica gel leather, the product has the advantages of 80% improvement in scratch resistance, full leather hand feeling and 50% reduction in cost, and the product performance is superior to that of solvent-free leather and pure silica gel leather.
Drawings
FIG. 1 is a schematic cross-sectional structure of a silicone polyurethane solventless leather product of the present invention, in which a modified silicone resin layer (1), an aqueous polyurethane resin layer (2), a solventless foamed adhesive layer (3) and a base fabric (4);
fig. 2 is a photograph of a silicone polyurethane solventless leather product of the present invention.
Description of the embodiments
The technical scheme of the invention is further specifically described by the following specific examples. It should be understood that the practice of the invention is not limited to the following examples, but is intended to be within the scope of the invention in any form and/or modification thereof.
In the present invention, unless otherwise specified, all parts and percentages are by weight, and the equipment, materials, etc. used are commercially available or are conventional in the art. The methods in the following examples are conventional in the art unless otherwise specified.
The reagents used in the examples described below, unless otherwise specified, were purchased from conventional biochemical reagent stores.
The common use equipment in the following examples is shown in table 1.
TABLE 1
| Device name | Manufacturer name |
| Revolution and rotation stirring deaeration machine | Guangzhou Xingzhida |
| Viscometer DV2THB | Boiler fly Brookfield |
| Bench drilling machine | Jiangsu Jinding electric tool |
| Color matching lamp box | NINGBO TEXTILE INSTRUMENT FACTORY |
| Baking oven | Persian electric heating device Co., ltd |
| Planetary mixer | Dongguan Jin Yinhe |
| Three-roller grinder | Changzhou self-force |
| Break up type stirrer | Shanghai Fafu electromechanical technology |
| Casting machine | Jiangsu sea peak |
| Three-coating dry leather production line | Jia Xing DaYu |
| Three-plate printing machine | Zhangjia hong Kong Yuan |
| Embossing all-in-one machine | Jia Xing DaYu |
The sources of reagents used in the examples below are shown in Table 2.
TABLE 2
| Name of product | Model number | Manufacturer' s |
| Silicone resin | LX-7080 | New Shandong Cheng Yu material |
| Polyether polyol | X6033 | Xuan chemical |
| Fumed silica | HB152D | Yichanghui Fu (Yichang Hui Fu) |
| Liquid silica gel | KDS4A58 | Dongguan Kong Duoduo |
| Platinum catalyst | D4B21 | Dongguan Dongcheng |
| Inhibitors | A65 | Beijing Bailingwei science and technology Co |
| Vinyl double-seal head | F02 | JIANGXI HUAER RUNZHI NEW MATERIAL Co.,Ltd. |
| High hydrogen silicone oil | F03 | JIANGXI HUAER RUNZHI NEW MATERIAL Co.,Ltd. |
| Anti-graffiti auxiliary agent | 3822F3 | Guangzhou SpA, stllokoch chemical Co., ltd |
| Hand feeling agent | 9988 | Changzhou Langying oil chemical industry Co Ltd |
One of the cores of the invention is to provide a modified organic silicon resin, which comprises the following raw materials in parts by weight: 30-60 parts of organic silicon resin, 10-20 parts of polyether polyol, 10-30 parts of gas-phase white carbon black, 10-40 parts of liquid silica gel, 0.01-0.5 part of platinum catalyst, 0.1-1 part of inhibitor, 10-40 parts of vinyl double seal head, 5-20 parts of high-hydrogen silicone oil, 0.5-2 parts of anti-graffiti auxiliary agent and 1-5 parts of handfeel agent.
The second core of the invention is to provide a preparation method of the modified organic silicon resin, which comprises the following steps:
a. fully mixing the vinyl double seal heads with gas-phase white carbon black, organic silicon resin, liquid silica gel and a handfeel agent, heating to 180+/-10 ℃, and fully vacuumizing and stirring for more than 4 hours to obtain a material A;
b. fully stirring the high-hydrogen silicone oil, the platinum catalyst and the anti-doodling auxiliary agent for more than 2 hours to prepare a material B;
c. stirring polyether polyol and an inhibitor to prepare a material C;
d. mixing A, B, C three groups according to the weight ratio of 100:10-20:10-20, fully stirring, adding a proper amount of toner according to design requirements, and mixing colors to obtain the modified organic silicon resin.
The invention further provides an application of the modified organic silicon resin in polyurethane solvent-free decorative leather, furniture leather and automobile leather.
The invention provides organic silicon polyurethane solvent-free leather, the structure of which is shown in figure 1, and the organic silicon polyurethane solvent-free leather sequentially comprises a modified organic silicon resin layer 1, a water-based polyurethane resin layer 2, a solvent-free foaming adhesive layer 3 and base cloth 4 from top to bottom, wherein the modified organic silicon resin layer is formed by coating the modified organic silicon resin slurry. The base fabric 4 may be replaced with a microfiber fabric.
The fifth core of the invention is to provide a preparation method of organic silicon polyurethane solvent-free leather, which comprises the following specific steps:
s1, preparing modified organic silicon resin slurry, covering the modified organic silicon resin slurry on release paper, and baking the release paper in an oven at 110-130 ℃ for 3-5min to obtain a modified organic silicon resin layer;
the thickness of the coating of the modified organic silicon resin slurry is controlled to be 0.1-0.15mm;
the modified organic silicon resin is prepared by the previous embodiment;
s2, preparing aqueous polyurethane resin slurry, coating the aqueous polyurethane resin slurry on the modified organic silicon resin layer, and drying and curing the aqueous polyurethane resin slurry at the temperature of 110-130 ℃ for 8-10min to form an aqueous polyurethane resin layer;
s3, preparing solvent-free polyurethane resin slurry, coating the solvent-free polyurethane resin slurry on the water-based polyurethane resin layer to form a solvent-free foaming adhesive layer, drying at the temperature of 100-120 ℃ to enable the solvent-free foaming adhesive layer to be compounded with base cloth or microfiber cloth, and then drying at the temperature of 120-140 ℃ for 15-20min to obtain semi-finished leather;
s4, separating the release paper from the semi-finished leather, curing for more than 12 hours at the temperature of 35+/-2 ℃, and then carrying out post-treatment on the organic silicon resin to obtain the finished leather.
Aqueous polyurethane resin syrup, solvent-free polyurethane resin syrup is a conventional choice.
1. The raw material formulation of the modified silicone resin is shown in table 3.
TABLE 3 formulation of modified Silicone resins (Unit: kg)
| Raw materials | Example 1 | Example 2 | Example 3 |
| Silicone resin | 30 | 60 | 40 |
| Polyether polyol | 20 | 20 | 10 |
| Fumed silica | 15 | 20 | 30 |
| Liquid silica gel | 20 | 40 | 10 |
| Platinum catalyst | 0.5 | 0.5 | 0.5 |
| Inhibitors | 0.5 | 0.9 | 1 |
| Vinyl double-seal head | 30 | 40 | 10 |
| High hydrogen silicone oil | 20 | 5 | 10 |
| Anti-graffiti |
1 | 1 | 2 |
| |
2 | 3 | 5 |
2. Preparation process
a. And (3) fully mixing the vinyl double seal heads with gas-phase white carbon black, organic silicon resin, liquid silica gel and a handfeel agent, heating to 180 ℃, and fully vacuumizing and stirring for more than 4 hours to obtain the material A.
b. And fully stirring the high-hydrogen silicone oil, the platinum catalyst and the anti-doodling auxiliary agent for more than 2 hours to prepare the material B.
c. And stirring polyether polyol and inhibitor to obtain the material C.
The preparation method of the organic silicon polyurethane solvent-free leather comprises the following specific steps:
s1, mixing A, B, C groups according to the weight ratio of 100:10:10 respectively, fully stirring, adding toner, and mixing colors to prepare M1 material;
s2, fully stirring the aqueous polyurethane resin slurry, and adding color paste to obtain an intermediate layer material M2;
s3, putting the solvent-free polyurethane resin slurry into a casting tank for standby to prepare M3;
s4, the specific process of the production of the product is referred to the fifth content of the core of the invention, and the process flow is as follows:
the aqueous polyurethane resin layer and the solvent-free foaming adhesive layer are conventional techniques and conventional choices in the art, and are not described in detail herein, but are not essential to the study of the present invention.
The leather manufactured by the process has a photo of a product shown in fig. 2, and is commonly called semi-silica gel leather in the market. Through detection, the detection result of the organic silicon polyurethane solvent-free leather product prepared by the method is as follows:
a. leather composition:
40-45% of fiber fabric, 50-55% of solvent-free polyether, polycarbonate and 10-15% of organosilicon polymer,
PVC-free polyvinyl chloride and low VOCs emission; can be recycled, meets the RoHs environmental protection, REACH, california 65 standard in the United states, is nontoxic, and has no formaldehyde and lead; the product contains no plasticizer/phthalate/heavy metal/BPA, is harmless to air and water, and has no smell.
b. Leather color fastness:
dry wiping color fastness grade 4, wet wiping grade 3;
perspiration color fastness grade 4 AATCC15.
c. Leather stain resistance:
ink CFFA-141, grade 5; indigo transfer CFFA-141, stage 5,
cooking oil CFFA-141, grade 5; coffee/chocolate CFFA-141, grade 5,
blood stain/urine/iodine CFFA-141, grade 5; mustard sauce/red wine CFFA-141, grade 5,
lipstick CFFA-141, grade 5; ball point pens, oil markers, mark pens CFFA-141, grade 5.
d. Leather physical properties:
martindale wear-resistant for 20 ten thousand times and is not broken;
TABOR H18 weight 10000 turns above 500 g;
bending resistance is carried out for 50 ten thousand times at normal temperature; hydrolysis resistance: ASTM D3609-02, 7 weeks; soaking NaoH at 10% at normal temperature; the physical properties are not changed obviously after 72 hours.
e. Flame retardant leather:
american standard flame retardant California 117, english standard flame retardant B1,
does not promote the growth of mould, has no antibacterial additive/bactericide and/or flame retardant,
cytotoxicity test: the ISO 10993-5 GLP-test passes,
skin allergy test: ISO10993-10 GLP-irritation is negligible.
The above-described embodiment is only a preferred embodiment of the present invention, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (2)
1. A preparation method of organic silicon polyurethane solvent-free leather is characterized by comprising the following steps:
the organic silicon polyurethane solvent-free leather sequentially comprises a modified organic silicon resin layer (1), a water-based polyurethane resin layer (2), a solvent-free foaming adhesive layer (3) and base cloth or microfiber cloth (4) from top to bottom, wherein the modified organic silicon resin layer is formed by coating modified organic silicon resin slurry;
the modified organic silicon resin is prepared from the following raw materials in parts by weight:
30-60 parts of organic silicon resin,
10 to 20 percent of polyether polyol,
10 to 30 percent of gas-phase white carbon black,
10-40 parts of liquid silica gel,
0.01 to 0.5 percent of platinum catalyst,
0.1 to 1 percent of inhibitor,
10-40 parts of vinyl double-seal head,
5 to 20 percent of high hydrogen silicone oil,
0.5 to 2 percent of anti-graffiti auxiliary agent,
1-5 parts of handfeel agent;
the preparation method of the modified organic silicon resin comprises the following steps:
a. fully mixing the vinyl double seal heads with gas-phase white carbon black, organic silicon resin, liquid silica gel and a handfeel agent, heating to 180+/-10 ℃, and fully vacuumizing and stirring for more than 4 hours to obtain a material A;
b. fully stirring the high-hydrogen silicone oil, the platinum catalyst and the anti-doodling auxiliary agent for more than 2 hours to prepare a material B;
c. stirring polyether polyol and an inhibitor to prepare a material C;
d. mixing A, B, C three groups according to the weight ratio of 100:10-20:10-20 respectively, fully stirring, adding a proper amount of toner according to design requirements, and mixing colors to obtain the modified organic silicon resin;
the preparation method of the organic silicon polyurethane solvent-free leather comprises the following steps:
s1, preparing modified organic silicon resin slurry, covering the modified organic silicon resin slurry on release paper, and baking the release paper in an oven at 110-130 ℃ for 3-5min to obtain a modified organic silicon resin layer;
s2, preparing aqueous polyurethane resin slurry, coating the aqueous polyurethane resin slurry on the modified organic silicon resin layer, and drying and curing the aqueous polyurethane resin slurry at the temperature of 110-130 ℃ for 8-10min to form an aqueous polyurethane resin layer;
s3, preparing solvent-free polyurethane resin slurry, coating the solvent-free polyurethane resin slurry on the water-based polyurethane resin layer to form a solvent-free foaming adhesive layer, drying at the temperature of 100-120 ℃ to enable the solvent-free foaming adhesive layer to be compounded with base cloth or microfiber cloth, and then drying at the temperature of 120-140 ℃ for 15-20min to obtain semi-finished leather;
s4, separating the release paper from the semi-finished leather, curing for more than 12 hours at the temperature of 35+/-2 ℃, and then carrying out post-treatment on the organic silicon resin to obtain the finished leather.
2. The method for producing a polyurethane solventless decorative leather according to claim 1, characterized in that: in the step S1, the thickness of the coating of the modified organic silicon resin slurry is controlled to be 0.1-0.15mm.
Priority Applications (1)
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| DE102009002075A1 (en) * | 2009-04-01 | 2010-10-07 | Wacker Chemie Ag | Process for the preparation of Kohlenwasserstoffoxysiliciumverbindungen |
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