CN114316772B - Water-based aromatic polyurethane nubuck frosting treatment agent and preparation method thereof - Google Patents
Water-based aromatic polyurethane nubuck frosting treatment agent and preparation method thereof Download PDFInfo
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- CN114316772B CN114316772B CN202210003821.5A CN202210003821A CN114316772B CN 114316772 B CN114316772 B CN 114316772B CN 202210003821 A CN202210003821 A CN 202210003821A CN 114316772 B CN114316772 B CN 114316772B
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Abstract
The invention discloses a waterborne aromatic polyurethane nubuck frosting treatment agent which is prepared by the following steps: (1) Adding the water-based aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min; (2) Adding water, water-based defoaming agent, water-based dispersing agent, aniline, water-based coarse yangbuck powder, water-based medium yangbuck powder, water-based fine yangbuck powder, water-based hand feeling agent, water-based hammer agent, water-based kaolin, water-based wetting agent and water-based leveling agent, and continuously stirring for 15min; (3) Adding a water-based thickening agent and a cross-linking agent, and stirring at the rotating speed of 500-800 r/min for 10-30 min to prepare the water-based aromatic polyurethane nubuck polishing agent. The aromatic polyurethane nubuck frosting treatment agent prepared by the invention is low in cost, and the treated synthetic leather has a special concave-convex nubuck effect, has good water resistance and solvent resistance, is environment-friendly, and expands the application range of the waterborne polyurethane synthetic leather.
Description
Technical Field
The invention relates to the technical field of leather treating agents, in particular to a waterborne aromatic polyurethane nubuck frosting treating agent and a preparation method thereof.
Background
With the rapid development of scientific technology, the quality and performance requirements of the market on leather products are higher and higher, and the specific gravity of high-grade leather is increased year by year. Particularly, the pursuit of the concepts of 'nature' and 'comfort' is higher and higher, and leather products gradually move towards the development of diversity and multiple functions.
The synthetic leather is a substitute product of natural leather, has the advantages of convenient processing, diversified styles and wider covering surface, and can meet the pursuit of people for various styles and varieties of the surface. In the field of synthetic leather, surface treatment is an important process technology and is an effective method for improving the added value of products. The surface treatment process includes printing, spraying and rolling.
The surface treatment of leather is known as "pointing" in the tanning process. The surface of the leather product is mainly provided with a coating with a modification function, so that the leather product has the appearance, hand feeling and style of color, and has various functions of water resistance, abrasion resistance, easy maintenance and the like, the added value of the leather product is further improved, and the application range of the leather product is widened.
At present, the surface treatment applied to leather at home and abroad is mainly a solvent type treating agent, and a large amount of toxic and harmful organic solvents including dimethyl formamide (DMF), toluene (TOL), methyl Ethyl Ketone (MEK), acetone (AC), methyl ester and the like are used, so that not only is serious environmental pollution caused, but also the health of operators is damaged.
To solve these problems of leather surface treatment agents, a process system of aqueous polyurethane was developed. However, the existing waterborne polyurethane treating agent mainly adopts aliphatic or aliphatic modification, is widely applied to the field of leather, is relatively expensive, and has poor water resistance and solvent resistance, so that the performance of the waterborne polyurethane synthetic leather cannot reach a higher level, and the application range of the waterborne polyurethane synthetic leather is limited.
Disclosure of Invention
The invention aims to provide an aqueous aromatic polyurethane nubuck polishing treatment agent and a preparation method thereof aiming at the defects in the prior art, so as to improve the water resistance and the solvent resistance of the aromatic polyurethane nubuck polishing treatment agent, reduce the price of the aqueous polyurethane treatment agent, protect the environment and expand the application range of aqueous polyurethane synthetic leather.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the water-based aromatic polyurethane nubuck polishing treatment agent comprises the following components in parts by weight:
preferably, the granulation temperature of the water-based fine Yangbuck powder is 80-130 ℃, and the particle size is 8-12 mu m; the granulation temperature of the water-based medium Yangbuck powder is 80-130 ℃, and the particle size is 15-20 mu m; the granulation temperature of the water-based crude Yangbuck powder is 80-130 ℃, and the particle size is 32-36 mu m.
Preferably, the aniline is an organoaminobenzene.
Preferably, the water-based hand feeling agent is one or more of water-based organic silicone oil, water-based amino silicone oil and water-based amino modified silicone.
Preferably, the aqueous hammer tone agent is an aqueous organosilicone polymer.
Preferably, the crosslinking agent is one or more of an organosilicon modified siloxane type water-based crosslinking agent, a nitrogen pyridine type crosslinking agent and a carbodiimide type crosslinking agent.
Preferably, the waterborne kaolin is 800-1250 meshes.
The preparation method of the water-based aromatic polyurethane nubuck polishing agent comprises the following steps:
(1) Adding the water-based aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min;
(2) Adding water, water-based defoaming agent, water-based dispersing agent, aniline, water-based coarse yangbuck powder, water-based medium yangbuck powder, water-based fine yangbuck powder, water-based hand feeling agent, water-based hammer agent, water-based kaolin, water-based wetting agent and water-based leveling agent, and continuously stirring for 15min;
(3) Adding a water-based thickening agent and a cross-linking agent, and stirring at the rotating speed of 500-800 r/min for 10-30 min to prepare the water-based aromatic polyurethane nubuck polishing agent.
The invention has the beneficial effects that:
the water-based aromatic polyurethane nubuck polishing treatment agent prepared by the invention has the advantages of low organic matter content, low pollution, no substances harmful to human bodies, such as heavy metal, triphenyl, formaldehyde, halogenated hydrocarbon and the like, environmental protection, safety and lower cost than the aliphatic leather treatment agent on the market, and the synthetic leather treated by the treatment agent not only has a special concavo-convex nubuck effect, but also has the nubuck smooth and special grain effects.
The synthetic leather treated by the waterborne aromatic polyurethane nubuck frosting treatment agent prepared by the invention has good water resistance and solvent resistance, and the application range of the waterborne polyurethane synthetic leather is expanded.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The reagents or instruments used in the present invention are not indicated by manufacturers, and are conventional products commercially available.
Example 1
A preparation method of an aqueous aromatic polyurethane nubuck finishing agent comprises the following steps:
(1) Adding 70 parts by weight of waterborne aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min;
(2) Adding 10 parts by weight of water, 0.02 part by weight of water-based defoaming agent, 0.5 part by weight of water-based dispersing agent, 1 part by weight of organic aminobenzene, 5 parts by weight of water-based coarse lamb powder, 1 part by weight of water-based medium lamb powder, 10 parts by weight of water-based fine lamb powder, 1 part by weight of water-based organic silicone oil, 0.05 part by weight of water-based organic silicone polymer, 2 parts by weight of 800-mesh water-based kaolin, 0.2 part by weight of water-based wetting agent and 0.2 part by weight of water-based leveling agent, and continuously stirring for 15min, wherein: the granulation temperature of the water-based fine Yangbuck powder is 100 ℃, and the particle size is 10 mu m; the granulation temperature of the water-based medium Yangbuck powder is 80 ℃, and the particle size is 15 mu m; the granulation temperature of the water-based crude Yangbuck powder is 130 ℃, and the particle size is 32 mu m;
(3) Adding 1 part by weight of aqueous thickening agent, and stirring at the rotating speed of 500r/min for 30min to obtain the aqueous aromatic polyurethane nubuck frosting agent.
The leather is prepared, the treating agent is sprayed on the leather, and after treatment, the leather is dried by a drying tunnel at 100 ℃. After standing for 24h, the properties were measured. The surface Yangbuck has strong frosting effect and special grains with clear hand feeling. Immersing the finished product in water at normal temperature for 360 hours without exception; soaking the finished product in 80 deg.C hot water for 8 hr; immersing the finished product in saline water for 168 hours without exception; washing the finished product with washing powder for 12 cycles without falling off.
Example 2
The preparation method of the water-based aromatic polyurethane nubuck polishing treatment agent comprises the following steps:
(1) Adding 90 parts by weight of waterborne aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min;
(2) Adding 20 parts by weight of water, 0.2 part by weight of water-based defoaming agent, 1 part by weight of water-based dispersing agent, 5 parts by weight of organic aminobenzene, 10 parts by weight of water-based coarse lamb powder, 3 parts by weight of water-based medium lamb powder, 5 parts by weight of water-based fine lamb powder, 2 parts by weight of water-based amino silicone oil, 1 part by weight of water-based organic silicone polymer, 5 parts by weight of 1000-mesh water-based kaolin, 1 part by weight of water-based wetting agent and 0.8 part by weight of water-based leveling agent, and continuously stirring for 15min, wherein: the granulation temperature of the water-based fine Yangbuck powder is 80 ℃, and the particle size is 8 mu m; the granulation temperature of the water-based medium Yangbuck powder is 130 ℃, and the particle size is 20 mu m; the granulation temperature of the water-based crude Yangbuck powder is 100 ℃, and the particle size is 36 mu m;
(3) Adding 2 parts by weight of water-based thickening agent and 1 part by weight of organic silicon modified siloxane water-based cross-linking agent, and stirring at the rotating speed of 700r/min for 20min to obtain the water-based aromatic polyurethane nubuck frosting agent.
The leather is prepared, the treating agent is sprayed on the leather, and after treatment, the leather is dried by a drying tunnel at 100 ℃. After standing for 24 hours, the properties were measured. The surface Yangbuck has strong frosting effect and special grains with clear hand feeling. Immersing the finished product in water at normal temperature for 360 hours without exception; soaking the finished product in 80 deg.C hot water for 8 hr; immersing the finished product in saline water for 168 hours without exception; washing the finished product with washing powder for 12 cycles without falling off.
Example 3
A preparation method of an aqueous aromatic polyurethane nubuck finishing agent comprises the following steps:
(1) Adding 100 parts by weight of waterborne aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min;
(2) Adding 30 parts by weight of water, 0.5 part by weight of water-based defoaming agent, 2 parts by weight of water-based dispersing agent, 10 parts by weight of organic aminobenzene, 1 part by weight of water-based coarse yangbuck powder, 10 parts by weight of water-based medium yangbuck powder, 1 part by weight of water-based fine yangbuck powder, 5 parts by weight of water-based amino-modified silicone, 2 parts by weight of water-based organic silicone polymer, 10 parts by weight of 1250-mesh water-based kaolin, 1.5 parts by weight of water-based wetting agent and 1.5 parts by weight of water-based leveling agent, and continuing stirring for 15min, wherein: the granulation temperature of the water-based fine Yangbuck powder is 130 ℃, and the particle size is 12 mu m; the granulation temperature of the water-based medium Yangbuck powder is 110 ℃, and the particle size is 15 mu m; the granulation temperature of the water-based crude Yangbuck powder is 80 ℃, and the particle size is 34 mu m;
(3) Adding 5 parts by weight of aqueous thickening agent, 1 part by weight of azapyridine type cross-linking agent and 2 parts by weight of carbodiimide type cross-linking agent, and stirring at the rotating speed of 800r/min for 10min to obtain the aqueous aromatic polyurethane nubuck polishing agent.
The leather is prepared, the treating agent is sprayed on the leather, and after treatment, the leather is dried by a drying tunnel at 100 ℃. After standing for 24 hours, the properties were measured. The surface Yangbuck has strong frosting effect and special grains with clear hand feeling. Immersing the finished product into water at normal temperature for 400 hours without swelling; soaking the finished product in hot water of 80 ℃ for 10 hours without swelling; soaking the finished product in saline water for 200h without swelling; the finished product was brushed with a brush for 18 cycles without breakage.
The invention takes the water-based aromatic polyurethane resin as the main component, has the characteristic of excellent coating property of bottom base material adhesion, and is suitable for the treatment of various leather surfaces; the aqueous defoaming agent is used for reducing the surface tension in the mixing process and inhibiting the generation of foam; the aniline can increase the brightness of the surface base material and endow the surface base material with a brighter effect; the sizes of the water-based Yangbuck powder grains with different sizes, such as fine, medium and coarse grains are different, so that the special Yangbuck effect caused by disorder can be achieved; the water-based hand feeling agent can endow the product using the treatment agent with soft hand feeling and smooth effect; the water-based wetting agent and the water-based leveling agent can effectively reduce the surface tension, improve the leveling property and uniformity of the water-based wetting agent and the water-based leveling agent, improve the permeability of the treating agent, increase the coverage property, and can be uniformly and naturally covered on a leather substrate when in use; the water-based kaolin acts on the filler and increases the viscosity; the aqueous thickening agent is used for improving the viscosity of the adhesive; the cross-linking agent is mixed with the waterborne aromatic polyurethane nubuck frosting treatment agent to promote the cross-linking reaction of the treatment agent according to the using condition and requirement.
By adopting the proportion, the water-based aromatic polyurethane nubuck polishing treatment agent has the advantages of obvious nubuck polishing effect after treatment, special grains, special style given to leather, no toxicity and no harm.
The water-based aromatic polyurethane nubuck treating agent prepared by the invention has the advantages of soft hand feeling, low solvent content, no pollution, soft hand feeling, good surface nubuck effect, environmental protection, safety, no substances harmful to human bodies such as heavy metal, triphenyl, formaldehyde, halogenated hydrocarbon and the like, and low cost compared with the aliphatic treating agent and the oily treating agent on the market, and improves the economic benefit of enterprises and reduces the cost.
Those skilled in the art to which the present invention pertains can also make appropriate alterations and modifications to the above-described embodiments, in light of the above disclosure. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (4)
1. The water-based aromatic polyurethane nubuck polishing treatment agent is characterized by comprising the following components in parts by weight: the paint comprises the following components in parts by weight:
the granulation temperature of the water-based fine Yangbuck powder is 80-130 ℃, and the particle size is 8-12 mu m; the granulation temperature of the water-based medium Yangbuck powder is 80-130 ℃, and the particle size is 15-20 mu m; the granulation temperature of the water-based nubuck powder is 80-130 ℃, and the particle size is 32-36 mu m;
the aniline is organic aminobenzene;
the aqueous hammer tone agent is an aqueous organic silicone polymer;
the cross-linking agent is one or more of organosilicon modified siloxane type water-based cross-linking agent, nitrogen pyridine type cross-linking agent and carbodiimide type cross-linking agent.
2. The aqueous aromatic polyurethane nubuck treatment of claim 1, wherein: the water-based hand feeling agent is water-based organic silicone oil.
3. The aqueous aromatic polyurethane nubuck treatment of claim 1, wherein: the waterborne kaolin is 800-1250 meshes.
4. A method of preparing the aqueous aromatic polyurethane nubuck treatment of any of claims 1-3, characterized by: the method comprises the following steps:
(1) Adding the water-based aromatic polyurethane resin into a stirrer, and stirring at the rotating speed of 400 r/min;
(2) Adding water, water-based defoaming agent, water-based dispersing agent, aniline, water-based coarse yangbuck powder, water-based medium yangbuck powder, water-based fine yangbuck powder, water-based hand feeling agent, water-based hammer agent, water-based kaolin, water-based wetting agent and water-based leveling agent, and continuously stirring for 15min;
(3) Adding a water-based thickening agent and a cross-linking agent, and stirring at the rotating speed of 500-800 r/min for 10-30 min to prepare the water-based aromatic polyurethane nubuck polishing agent.
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| CN101634109A (en) * | 2009-08-25 | 2010-01-27 | 江苏宝泽高分子材料股份有限公司 | Aqueous PU velvet resin used for synthetic leather |
| CN101649552A (en) * | 2009-08-25 | 2010-02-17 | 江苏宝泽高分子材料股份有限公司 | Waterborne PU high smooth wax resin for synthetic leather |
| CN101666039A (en) * | 2009-10-09 | 2010-03-10 | 江苏宝泽高分子材料股份有限公司 | Water-soluble PU nubuck low-temperature foamex for synthetic leather |
| CN103046341B (en) * | 2012-12-28 | 2014-11-19 | 苏州鼎润复合材料有限公司 | Buffing burnt-feeling water-based Yangbuck foaming resin and preparation method thereof |
| CN110644255B (en) * | 2019-10-31 | 2022-06-21 | 安徽安利材料科技股份有限公司 | Waterborne foaming velvet solvent-free composite polyurethane synthetic leather for sofa and preparation method thereof |
| CN111764182A (en) * | 2020-07-08 | 2020-10-13 | 清远市齐力合成革有限公司 | Waterproof frosting waterborne polyurethane synthetic leather |
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