CN111041851A - Impregnating material, high-light-fastness microfiber suede leather and preparation method - Google Patents
Impregnating material, high-light-fastness microfiber suede leather and preparation method Download PDFInfo
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- CN111041851A CN111041851A CN201911302433.1A CN201911302433A CN111041851A CN 111041851 A CN111041851 A CN 111041851A CN 201911302433 A CN201911302433 A CN 201911302433A CN 111041851 A CN111041851 A CN 111041851A
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- 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
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- 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
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
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- 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
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- 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
- D06N3/0065—Organic pigments, e.g. dyes, brighteners
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- 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
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1678—Resistive to light or to UV
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses an impregnating compound, high-light fastness microfiber suede leather and a preparation method thereof, wherein the impregnating compound comprises the following components in parts by weight: 100 parts of waterborne polyurethane resin, 1-100 parts of infrared light reflection pigment or dye, 0.5-10 parts of polyether glycol dispersant, 1-10 parts of curing agent and 5-50 parts of water. Sequentially carrying out splitting treatment and buffing treatment on the polyurethane superfine fiber suede leather base cloth to obtain the pretreated superfine fiber suede leather base cloth, soaking the pretreated superfine fiber suede leather base cloth in a soaking material, and then drying to obtain the polyurethane superfine fiber suede leather with high light fastness. The invention effectively prevents the adverse effect of the microfiber suede leather caused by the migration of small molecular substances such as ultraviolet absorbers, antioxidants and the like in the using process, and enhances the illumination color fastness of the invention. In daily use, the surface temperature of the material is lower than that of other microfiber materials with the same color, and the material has an obvious cooling effect.
Description
Technical Field
The invention relates to polyurethane synthetic leather with high light fastness and a preparation method thereof, in particular to polyurethane superfine fiber suede leather with high light fastness and a preparation method thereof.
Background
Polyurethane superfine fiber suede leather (short for superfine fiber suede leather) is popular with consumers due to the fashionable appearance effect and excellent touch, and is currently applied to the fields of high-grade automobile high-trim, high-grade bags, high-grade shoes and clothes.
However, the microfiber suede leather is easy to age and fade or fade when being illuminated in the daily use process, so that the use of consumers is affected, and if the microfiber suede leather with high illumination fastness can be invented, the use experience of products can be well improved.
The material aging caused by illumination is that the energy of light actually causes the destruction of some chemical bonds in the chemical structure of the material. In daily sunlight, the visible light accounts for 50%, the infrared light accounts for 43%, and the ultraviolet light accounts for 7% in terms of energy ratio. (360 encyclopedia: https:// baike. so. com/doc/2856197-3014068.html # 2856197-. If the method for preventing infrared light from acting on the material can be invented, the light color fastness of the material can be greatly improved.
Disclosure of Invention
The invention aims to provide a suede leather impregnating material, a high-light fastness polyurethane super-fiber suede leather and a preparation method thereof, so as to overcome the defects of the existing product.
The suede leather impregnating material comprises the following components in parts by weight:
aqueous polyurethane resin: 100 portions of
Infrared light reflecting pigments or dyes: 1 to 100 portions of
Polyether glycol dispersant: 0.5 to 10 portions of
Curing agent: 1-10 parts of
Water: 5-50 parts of
Preferably, the composition comprises the following components in parts by weight:
aqueous polyurethane resin: 100 portions of
Infrared light reflecting pigments or dyes: 25 to 75 parts by weight of
Polyether glycol dispersant: 3 to 8 portions of
Curing agent: 3 to 8 portions of
Water: 10 to 40 portions of
The aqueous polyurethane resin is selected from one of anionic aqueous polyurethane, cationic aqueous polyurethane and nonionic aqueous polyurethane;
the definitions of anionic aqueous polyurethane, cationic aqueous polyurethane and nonionic aqueous polyurethane are reported in the document "aqueous polyurethane materials" (SchoGo et al. aqueous polyurethane materials [ M ]. Beijing: chemical industry Press, 2006.).
The waterborne polyurethane resin is prepared from aliphatic or alicyclic diisocyanate. The waterborne polyurethane meeting the requirements is sold in related products in the market, such as JF-D-NC8903 of Zhejiang Huafeng synthetic resin Co.
The infrared light reflection pigment or dye can reflect or disperse infrared light in sunlight. The infrared light reflecting pigment or dye of the present invention is selected from inorganic metal infrared light reflecting pigments (commercial products of Sicotan series products of BASFSE, Sicopal series products, Altiris 550 and Altiris 800 products of Huntsman Corporation) or organic dyes with infrared reflection function containing perylene tetracarboxylic anhydride structure (preparation method disclosed in patent CN 105368089A).
The polyether glycol dispersant can be any one of polyethylene glycol dispersant, polypropylene glycol dispersant and polybutylene glycol dispersant and the combination thereof; the polyethylene glycol dispersant is polyether glycol which is prepared by polymerizing ethylene oxide by using ethylene glycol or diethylene glycol as an initiator; the polyether glycol dispersant used in the present invention has an average molecular weight of 760-10500 and a hydroxyl value of (11-133) mg KOH/g. When the molecular weight is less than 760, the polyether glycol reacts rapidly with the curing agent at a temperature of less than 80 ℃ and loses its effect.
The curing agent is a water dispersible aliphatic polyisocyanate cross-linking agent, and a large number of commercial products are available, such as Desmodur DA, Desmodur XP-7007, Bayhydur XP-7063, Desmodur XO-671 and Desmodur XO-672 of Bayer in Germany.
The preparation method of the suede leather impregnating material is a conventional physical mixing method, the components are mixed, then the mixture is stirred for 10 to 60 minutes under the conditions that the temperature is less than or equal to 70 ℃ and the mixture is rotated at 1000 to 5000 revolutions per minute, and then the mixture is ground once on a three-roller grinding machine to obtain the suede leather impregnating material;
the techniques for grinding on such three-roll mills are well known to those skilled in the art.
The preparation method of the polyurethane microfiber suede leather with high light fastness comprises the following steps:
(1) sequentially carrying out splitting treatment and buffing treatment on polyurethane superfine fiber suede leather base cloth (called superfine fiber suede leather base cloth for short) to obtain pretreated superfine fiber suede leather base cloth;
the splitting treatment and the buffing treatment are conventional treatment methods in the field, and persons skilled in the art should know that the splitting and dyeing treatment are related treatment processes for determining the thickness and the apparent effect of the product according to the specific requirements of the target product, namely polyurethane superfine fiber suede leather.
The superfine fiber synthetic leather base cloth is prepared by taking non-woven cloth as a base, saturating and soaking a polyurethane solution in fiber gaps, and performing solidification, washing, decrement and drying and sizing, such as documents: reported in "synthetic technology" (Qujiabo et al. synthetic leather technology [ M ]. Beijing: chemical industry Press, 2010.). The superfine fiber synthetic leather base cloth can be directly purchased from the market.
(2) Drying the pretreated microfiber suede leather base cloth at the temperature of 80-140 ℃ for 5-30 minutes, and then soaking the microfiber suede leather base cloth in the suede leather soaking material for 5-500 seconds at a bath ratio of 1: 1-1: 20;
the bath ratio is defined as: superfine fiber suede leather base cloth/color impregnating material in a weight ratio;
then drying the leather at the temperature of 80-160 ℃ for 5-30 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness;
the invention has the advantages of
The microfiber suede leather provided by the invention does not need to be added with any ultraviolet absorbent and antioxidant, and has excellent light-resistant color fastness in the process of coloring the microfiber suede leather. The adverse effect of the microfiber suede leather caused by the migration of ultraviolet absorbers, antioxidants and other small molecular substances in the using process is effectively prevented.
The invention improves the fastness of the pigment or dye in the invention on one hand by adding the curing agent, so that the pigment or dye still has good color fastness after being washed and cleaned by high-strength water; on the other hand, the compact chemical crosslinking effect generated by the curing agent and the invention can prevent the pigments or dyes from migrating to the surface of the material in use, so that the stability of the material under the illumination condition is improved, and the illumination color fastness of the invention is further enhanced.
The curing agent adopted by the invention is a water dispersible aliphatic polyfunctional polyisocyanate cross-linking agent, on one hand, the cross-linking agent has good affinity effect with waterborne polyurethane, and on the other hand, the cross-linking agent and infrared light reflecting pigment or dye
The structure has good bonding effect, which is not achieved by other types of cross-linking or curing agents.
The dispersant adopted by the invention is a hydroxyl-containing dispersant, and can prevent the agglomeration of the pigment or the dye when the infrared reflection pigment or the dye is dispersed, thereby having excellent dispersion effect; in the preparation process of the invention, the dispersant can react with the curing agent at a certain temperature to generate macromolecular substances with a net structure, so that the macromolecular substances can be prevented from migrating in the use process of the invention.
Another gain effect of the present invention is: in daily use, the surface temperature of the material is lower than that of other microfiber materials with the same color, and the material has an obvious cooling effect.
Detailed Description
The present invention is described in further detail below by way of examples, but is not limited thereto.
The aqueous polyurethanes used in the examples were: the aliphatic waterborne polyurethane of Zhejiang Huafeng synthetic resin Co., Ltd is JF-D-NC 8903.
Infrared reflective pigments in the examples: sicopal Schwarz k 0095 (BASF SE), Altiris 550 (Huntsman Corporation) and Altiris 800 (Huntsman Corporation), the infrared reflective dye A has the following structure (synthetic process reference patent: CN 105368089A):
the infrared reflection dye B has the following structure (the synthesis method is referred to as patent CN 105368089A):
example 1
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Sicopal Schwarz k 0095: 50 portions of
Polyethylene glycol dispersant of 760 molecular weight: 2 portions of
Curing agent: 5 portions of
Water: 25 portions of
The components are mixed, stirred for 40 minutes under the condition of 3000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 100 ℃ for 20 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 200 seconds at the bath ratio of 1: 5.
And then drying at the temperature of 100 ℃ for 20 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Example 2
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Infrared reflective dye a: 100 portions of
10500 molecular weight polyethylene glycol dispersant: 10 portions of
Curing agent Desmodur DA: 10 portions of
Water: 50 portions of
The components are mixed, stirred for 10 minutes under the condition of 5000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating compound.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 80 ℃ for 30 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 500 seconds at the bath ratio of 1: 1.
And then drying at the temperature of 80 ℃ for 30 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Example 3
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Altiris 550: 1 part of
1000 molecular weight polyethylene glycol dispersant: 0.5 portion
Curing agent Desmodur XP-7007: 1 part of
Water: 5 portions of
The components are mixed, stirred for 60 minutes under the condition of 1000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 140 ℃ for 5 minutes, and then soaking the superfine fiber suede leather base cloth in the color dipping material for 5 seconds at the bath ratio of 1: 20.
And then drying at 160 ℃ for 5 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Example 4
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Altiris 800: 40 portions of
2000 molecular weight polyethylene glycol dispersant: 5 portions of
Curing agent Bayhydur XP-7063: 6 portions of
Water: 30 portions of
The components are mixed, stirred for 20 minutes under the condition of 4000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 120 ℃ for 15 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 300 seconds at the bath ratio of 1: 10.
And then drying at the temperature of 140 ℃ for 15 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Example 5
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Infrared reflective dye B: 75 portions of
Polyethylene glycol dispersant of 4000 molecular weight: 8 portions of
Curing agent Desmodur XO-671: 3 portions of
Water: 40 portions of
The components are mixed, stirred for 50 minutes under the condition of 2000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 130 ℃ for 10 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 400 seconds at the bath ratio of 1: 15.
And then drying at the temperature of 150 ℃ for 10 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Example 6
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Sicopal Schwarz k 0095: 25 portions of
6000 molecular weight polyethylene glycol dispersant: 3 portions of
Curing agent Desmodur XO-672: 8 portions of
Deionized water: 10 portions of
The components are mixed, stirred for 30 minutes under the condition of 3000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 90 ℃ for 25 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 100 seconds at the bath ratio of 1: 8.
And then drying at the temperature of 120 ℃ for 25 minutes to obtain the polyurethane superfine fiber suede leather with high light fastness.
Comparative example 1:
and (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
By way of reference: in a method (chapter ninth) reported in the synthesis arts (Qujiabo et al, synthetic leather arts [ M ]. Beijing, chemical industry Press, 2010), the ultrafine fiber suede leather is dyed to obtain the conventional polyurethane ultrafine fiber suede leather.
Comparative example 2
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Altiris 800: 40 portions of
2000 molecular weight polyethylene glycol dispersant: 5 portions of
Aziridine curing agent XC-1036 parts
Water: 30 portions of
Wherein the aziridine curing agent XC-103 is a commercial product of Shanghai Zelon chemical Co., Ltd.
The components are mixed, stirred for 20 minutes under the condition of 4000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 120 ℃ for 15 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 300 seconds at the bath ratio of 1: 10.
Then drying for 15 minutes at the temperature of 140 ℃ to obtain the polyurethane superfine fiber suede leather.
Comparative example 3
Suede leather impregnating material: (parts by weight)
JF-D-NC 8903: 100 portions of
Infrared reflective dye B: 75 portions of
8 parts of BYK-W966 dispersant
Curing agent Desmodur XO-671: 3 portions of
Water: 40 portions of
The BYK-W966 dispersant is a salt solution of an unsaturated fatty acid polyamine amide and an acidic polyester, a product of Bick chemical company, Germany.
The components are mixed, stirred for 50 minutes under the condition of 2000 revolutions per minute, and ground once on a three-roll grinder to obtain the microfiber suede leather color impregnating material, and the impregnating material is easy to precipitate.
And (3) sequentially carrying out splitting treatment and buffing treatment on the superfine fiber synthetic leather base cloth to prepare the superfine suede leather base cloth.
Drying the superfine fiber suede leather base cloth at the temperature of 130 ℃ for 10 minutes, and then soaking the superfine fiber suede leather base cloth in the color soaking material for 400 seconds at the bath ratio of 1: 15.
Then drying for 10 minutes at the temperature of 150 ℃ to obtain the polyurethane superfine fiber suede leather.
The products prepared in the above examples have an irradiation dose of 338.6 Kj per square meter under the condition 5 of ISO 105-B06, and are subjected to a light resistance test, with the results as follows:
Claims (10)
1. the impregnating material is characterized by comprising the following components in parts by mass:
aqueous polyurethane resin: 100 portions of
Infrared light reflecting pigments or dyes: 1 to 100 portions of
Polyether glycol dispersant: 0.5 to 10 portions of
Curing agent: 1-10 parts of
Water: 5-50 parts.
2. The impregnating compound according to claim 1, which is characterized by comprising the following components in parts by mass:
aqueous polyurethane resin: 100 portions of
Infrared light reflecting pigments or dyes: 25 to 75 parts by weight of
Polyether glycol dispersant: 3 to 8 portions of
Curing agent: 3 to 8 portions of
Water: 10-40 parts.
3. The impregnation material of claim 1 or 2, wherein the aqueous polyurethane resin is one selected from the group consisting of anionic aqueous polyurethane, cationic aqueous polyurethane, and nonionic aqueous polyurethane.
4. An impregnation material as claimed in claim 1 or 2, characterized in that the infrared-light-reflecting pigment or dye is a pigment or dye which reflects or disperses infrared light in sunlight.
5. The impregnation material of claim 4, wherein the infrared light reflection pigment or dye is selected from inorganic metal infrared light reflection pigments or organic dyes with perylene tetracarboxylic anhydride structure and infrared reflection function.
6. The impregnant according to claim 1 or 2, wherein the polyether glycol dispersant is any one of polyethylene glycol dispersant, polypropylene glycol dispersant, polybutylene glycol dispersant, and a combination thereof.
7. The impregnant according to claim 6, wherein the polyether glycol dispersant has an average molecular weight of 760- & 10500 and a hydroxyl value of (11-133) mg-KOH/g.
8. The impregnation stock of claim 1 or 2, wherein the curing agent is a water-dispersible aliphatic polyisocyanate crosslinking agent.
9. The preparation method of the polyurethane microfiber suede leather with high light fastness is characterized by comprising the following steps:
(1) sequentially carrying out splitting treatment and buffing treatment on the polyurethane superfine fiber suede leather base cloth to obtain pretreated superfine fiber suede leather base cloth;
(2) dipping the pretreated microfiber suede leather base cloth in the dipping material of any one of claims 1-8, and then drying to obtain the polyurethane microfiber suede leather with high light fastness.
10. The method according to claim 9, wherein in the step (2), the pretreated microfiber suede base fabric is dipped in the dipping material according to any one of claims 1 to 8, dried at a temperature of 80 to 140 ℃ for 5 to 30 minutes, dipped in the suede dipping material for 5 to 500 seconds, and subjected to a bath ratio of 1:1 to 1: 20; then drying the mixture for 5 to 30 minutes at the temperature of between 80 and 160 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115506164A (en) * | 2022-10-11 | 2022-12-23 | 浙江迎丰科技股份有限公司 | Salt-free dyeing method of reactive dye |
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| CN102080332A (en) * | 2010-12-27 | 2011-06-01 | 陕西科技大学 | Preparation method of waterborne polyurethane synthetic leather base |
| CN102817243A (en) * | 2012-09-07 | 2012-12-12 | 上海华峰超纤材料股份有限公司 | Conductive polyurethane superfine fiber suede leather and preparing method thereof |
| CN102863605A (en) * | 2012-09-29 | 2013-01-09 | 漳州职业技术学院 | Water-borne polyurethane synthetic leather size and preparation method and application thereof |
| CN105368089A (en) * | 2015-11-23 | 2016-03-02 | 吉林大学 | Near-infrared reflecting function organic dye and preparation method thereof |
| CN107237138A (en) * | 2017-07-05 | 2017-10-10 | 上海华峰超纤材料股份有限公司 | Polyurethane superfine fiber suede of formaldehyde and preparation method thereof can be removed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506164A (en) * | 2022-10-11 | 2022-12-23 | 浙江迎丰科技股份有限公司 | Salt-free dyeing method of reactive dye |
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