CN102505523B - Method for preparing environment-friendly aqueous black paste of wet synthetic leather by grinding method of bead mill - Google Patents
Method for preparing environment-friendly aqueous black paste of wet synthetic leather by grinding method of bead mill Download PDFInfo
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- CN102505523B CN102505523B CN 201110305620 CN201110305620A CN102505523B CN 102505523 B CN102505523 B CN 102505523B CN 201110305620 CN201110305620 CN 201110305620 CN 201110305620 A CN201110305620 A CN 201110305620A CN 102505523 B CN102505523 B CN 102505523B
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Abstract
The invention relates to the field of the synthetic leather, in particular to a method for preparing environment-friendly aqueous black paste for wet synthetic leather. In the method for preparing environment-friendly aqueous black paste of wet synthetic leather by grinding method of bead mill, the black paste comprises the following components in mass percentage: 35 to 50 percent of carbon black, 3 to 15 percent of fatty alcohol polyoxyethylene ether, 0.5 to 2.5 percent of triethanolamine, 0.5 to 2.5 percent of diethylene glycol, 1 to 5 percent of water and oil soluble polyacrylate and waterin balance. The above-mentioned preparation method of aqueous black paste is milled by bead mill so as to obtain the environment-friendly aqueous black paste with good dispersibility. The aqueous black paste is an environment-friendly wet color paste which meets the environment friendliness requirements of the synthetic leather; and due to the aquosity and the environment friendliness of the color paste, the paste has safe production, storage and transportation performance.
Description
Present patent application is dividing an application of application for a patent for invention (application number: 201010145369.3, on 04 12nd, 2010 applying date, invention and created name: be used for environment-friendly aqueous black paste of wet-method synthetic leather and preparation method thereof).
Technical field
The present invention relates to the synthetic leather field, relate in particular to a kind of environment-friendly aqueous black paste for wet-method synthetic leather and preparation method thereof.
Background technology
The wet polyurethane synthetic leather, that adding DMF solvent and other mill base, filler, auxiliary agent in the polyurethane wet method resin are made mixed liquor, after the vacuum machine deaeration, the dipping or be coated on the base cloth, then put into solvent (DMF) and have compatibility, and with the incompatible water of polyurethane resin in, solvent (DMF) is replaced by water, polyurethane resin solidifies gradually, thereby form the porous epithelium, be the microvoid polyurethane grain layer, be called traditionally bass (transliteration of English BASS), its connotation is the meaning of base material (semi-finished product leather).Bass after the techniques such as surface printing, embossing, mill skin, just can become the Synthetic Leather finished product through dry method veneer or surperficial after ornamenting.
The wet polyurethane synthetic leather has good ventilative, poisture-penetrability, smooth plentiful feel, and good mechanical strength is particularly from the approximate natural leather of structure.
Traditional wet-method synthetic leather mill base is to use DMF as solvent, as carrying agent, adds wetting, dispersing aid with polyurethane resin, through dispersion, grinding technics, and a kind of solvent-borne type mill base that obtains.Because solvent is DMF, and the selection of dispersing aid, general again without the consideration of environmental protection, therefore, and traditional wet method solvent-borne type mill base, all poor to the bin stability of the feature of environmental protection of synthetic leather end article, mill base and mill base safety in production property, transportation property.
Summary of the invention
The technological deficiency that exists in order to solve traditional wet method solvent-borne type mill base, an object of the present invention is to provide a kind of aqueous black paste for the synthesis of the leather wet processing, mill base of the present invention have high color density, high-environmental and in the good characteristics of the conformability of wet method slurry and production, storage and the transport performance of safety.Another object of the present invention provides the preparation method of above-mentioned aqueous black paste, the method have public good simple, implement easily characteristics.
In order to realize first above-mentioned purpose, the present invention has adopted following technical scheme:
Be used for the environment-friendly aqueous black paste of wet-method synthetic leather, this aqueous black paste is made of following component by mass percentage:
| Carbon black | 35%～50% |
| Fatty alcohol-polyoxyethylene ether | 3%～15% |
| Triethanolamine | 0.5%～2.5% |
| Diethylene glycol | 0.5%～2.5% |
| The Water/oil dual-purpose polyacrylate | 1%～5% |
| Water | Surplus. |
As preferably, this aqueous black paste is made of following component by mass percentage:
| Carbon black | 40%～45% |
| Fatty alcohol-polyoxyethylene ether | 3%～10% |
| Triethanolamine | 1.0%～2.0% |
| Diethylene glycol | 1.0%～2.0% |
| The Water/oil dual-purpose polyacrylate | 2%～4% |
| Water | Surplus. |
In order to realize second above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of preparation method who prepares the above-mentioned environment-friendly aqueous black paste that is used for wet-method synthetic leather, the method comprises the steps:
1. add water, fatty alcohol-polyoxyethylene ether, triethanolamine, diethylene glycol, the Water/oil dual-purpose polyacrylate of formula ratio, mix, form infiltrate;
2. add while stirring carbon black, stirred 1200～2000 rev/mins of mixing speeds 60～120 minutes;
3. enter vertical grinding machine and carry out sand milling, reach fineness less than 5 microns, obtain the wet method feature of environmental protection aqueous black paste of good dispersion.
Perhaps, the method can adopt following step:
1. add part water gaging, fatty alcohol-polyoxyethylene ether, triethanolamine, diethylene glycol, Water/oil dual-purpose polyacrylate, mix, form infiltrate;
2. add while stirring carbon black, stirred 1200～2000 rev/mins of mixing speeds 60～120 minutes;
3. three-roller grinds two times, adds the water of surplus, stirs, and obtains the wet method feature of environmental protection aqueous black paste of good dispersion.
In addition, the method also can adopt following step:
1. add part water gaging, fatty alcohol-polyoxyethylene ether, triethanolamine, diethylene glycol, Water/oil dual-purpose polyacrylate, mix, form infiltrate;
2. add while stirring carbon black, stirred 1200～2000 rev/mins of mixing speeds 60～120 minutes;
3. ball mill grinds one time, adds the water of surplus, stirs, and obtains the wet method feature of environmental protection aqueous black paste of good dispersion.
As preferably, above-mentioned fatty alcohol-polyoxyethylene ether adopts the fatty alcohol-polyoxyethylene ether aqueous solution of 10%～30% weight percent concentration.
Formulation principle of the present invention is as follows:
1, the solvent of mill base is water, has solved the safety problem of production process, storage process, transportation, belongs to the asepsis environment-protecting product;
2, in the paste formula, select wetting (fatty alcohol-polyoxyethylene ether), the dispersing aid (triethanolamine, diethylene glycol, Water/oil dual-purpose polyacrylate) of environment-friendly type, solved the synthetic leather final products, to the requirement of the feature of environmental protection;
3, in the paste formula, added a certain amount of Water/oil dual-purpose polyacrylate, so that aqueous color paste is applied in the solvent type wet method slurry good compatibility is arranged.
In sum, the present invention is owing to adopting above-mentioned technical scheme, mill base is except high color density, with the conformability of wet method slurry well outside, also fully taken into account the environmental requirement of synthetic leather product, therefore, aqueous black paste of the present invention is the environment-friendly type wet method mill base that meets the synthetic leather environmental requirement, and, because therefore the water-based of mill base itself and environmental protection have safe production, storage and transport performance.
The specific embodiment
Embodiment 1
Add the water of 26.3KG, the 20% fatty alcohol-polyoxyethylene ether aqueous solution of 27KG, the triethanolamine of 1.1KG, the diethylene glycol of 1.1KG, the Water/oil dual-purpose polyacrylate of 2.0KG, mix, form infiltrate;
The carbon black that adds while stirring 42.5KG stirred 1500 rev/mins of mixing speeds 90 minutes;
Enter vertical grinding machine and carry out sand milling, reach fineness less than 5 little material, obtain the wet method feature of environmental protection aqueous color paste of good dispersion.
Embodiment 2
Add the water of 23.5KG, the 20% fatty alcohol-polyoxyethylene ether aqueous solution of 30KG, the triethanolamine of 1.0KG, the diethylene glycol of 1.0KG, the Water/oil dual-purpose polyacrylate of 2.0KG, mix, form infiltrate;
The carbon black that adds while stirring 42.5KG stirred 1500 rev/mins of mixing speeds 90 minutes;
Enter vertical grinding machine and carry out sand milling, reach fineness less than 5 little material, obtain the wet method feature of environmental protection aqueous color paste of good dispersion.
Embodiment 3
Add the water of 26.5KG, the 20% fatty alcohol-polyoxyethylene ether aqueous solution of 25KG, the triethanolamine of 1.5KG, the diethylene glycol of 1.5KG, the Water/oil dual-purpose polyacrylate of 3.0KG, mix, form infiltrate;
The carbon black that adds while stirring 42.5KG stirred 1500 rev/mins of mixing speeds 90 minutes;
Enter vertical grinding machine and carry out sand milling, reach fineness less than 5 little material, obtain the wet method feature of environmental protection aqueous color paste of good dispersion.
Embodiment 4
Add the water of 19KG, the 20% fatty alcohol-polyoxyethylene ether aqueous solution of 27KG, the triethanolamine of 1.1KG, the diethylene glycol of 1.1KG, the Water/oil dual-purpose polyacrylate of 2.0KG, mix, form infiltrate;
The carbon black that adds while stirring 42.5KG stirred 1500 rev/mins of mixing speeds 90 minutes;
Three-roller grinds two times, adds the water of 7.5KG, stirs, and obtains the wet method feature of environmental protection aqueous color paste of good dispersion.
Embodiment 5
Add the water of 19KG, the 20% fatty alcohol-polyoxyethylene ether aqueous solution of 27KG, the triethanolamine of 1.1KG, the diethylene glycol of 1.1KG, the Water/oil dual-purpose polyacrylate of 2.0KG, mix, form infiltrate;
The carbon black that adds while stirring 42.5KG stirred 1500 rev/mins of mixing speeds 90 minutes;
Ball mill grinds one time, adds the water of 7.5KG, stirs, and obtains the wet method feature of environmental protection aqueous color paste of favorable dispersibility.
Test example
Through detecting, the performance of above embodiment 1～5 described product all can reach following index:
Look content: 〉=42%
Solid content: 47%-53%
Fineness :≤5um
Viscosity: 2000cps-4000cps
The pH value of the aqueous solution: 7.5-8.5
Wet method application performance: good.
Claims (3)
1. the ball mill polishing prepares the method for wet-method synthetic leather environment-friendly aqueous black paste, it is characterized in that this aqueous black paste is made of following component by mass percentage:
Carbon black 35%～50% fatty alcohol-polyoxyethylene ether 3%～15%
Triethanolamine 0.5%～2.5% diethylene glycol 0.5%～2.5%
Water/oil dual-purpose polyacrylate 1%～5% water surplus;
The preparation method of above-mentioned aqueous black paste comprises the steps:
Add part water gaging, fatty alcohol-polyoxyethylene ether, triethanolamine, diethylene glycol, Water/oil dual-purpose polyacrylate, mix, form infiltrate;
Add while stirring carbon black, stirred 1200～2000 rev/mins of mixing speeds 60～120 minutes;
Ball mill grinds one time, adds the water of surplus, stirs, and obtains the wet method environment-friendly aqueous black paste of good dispersion.
2. ball mill polishing according to claim 1 prepares the method for wet-method synthetic leather environment-friendly aqueous black paste, it is characterized in that this aqueous black paste is made of following component by mass percentage:
Carbon black 40%～45% fatty alcohol-polyoxyethylene ether 3%～10%
Triethanolamine 1.0%～2.0% diethylene glycol 1.0%～2.0%
Water/oil dual-purpose polyacrylate 2%～4% water surplus.
3. ball mill polishing according to claim 1 and 2 prepares the method for wet-method synthetic leather environment-friendly aqueous black paste, it is characterized in that fatty alcohol-polyoxyethylene ether adopts the fatty alcohol-polyoxyethylene ether aqueous solution of 10%～30% weight percent concentration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110305620 CN102505523B (en) | 2010-04-12 | 2010-04-12 | Method for preparing environment-friendly aqueous black paste of wet synthetic leather by grinding method of bead mill |
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| CN2010101453693A Division CN101838938B (en) | 2010-04-12 | 2010-04-12 | Environment-friendly aqueous black paste for wet synthetic leather and preparation method thereof |
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| CN102505523B true CN102505523B (en) | 2013-09-18 |
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| CN1094737A (en) * | 1994-04-16 | 1994-11-09 | 钱澄 | Wet-type colour polyurethane paste and method for making thereof |
| JP3137870B2 (en) * | 1995-05-17 | 2001-02-26 | 帝人株式会社 | Glossy leather sheet and method for producing the same |
| CN101531836B (en) * | 2009-04-13 | 2012-10-31 | 杭州中富彩化工新材料有限公司 | Environment-friendly type aqueous color paste for leather and coating as well as manufacturing method thereof |
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Address after: 310000, 2, Jiang Shan Road, Mei Town, Jiande City, Zhejiang, Hangzhou Patentee after: Zhejiang deep blue new material Polytron Technologies Inc Address before: 313217 Zhejiang city of Huzhou province Deqing County Xin'an Xin Hui Road No. 120 Patentee before: Zhejiang Sunlight Textile Technology Co., Ltd. |