CN104450995B - SiO 2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof - Google Patents
SiO 2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof Download PDFInfo
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- CN104450995B CN104450995B CN201410629623.5A CN201410629623A CN104450995B CN 104450995 B CN104450995 B CN 104450995B CN 201410629623 A CN201410629623 A CN 201410629623A CN 104450995 B CN104450995 B CN 104450995B
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- chrome tanning
- high absorption
- aerogel
- sio
- vinyl polymer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Colloid Chemistry (AREA)
Abstract
The present invention relates to a kind of SiO
2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof.Chromium agent specific absorption in traditional chromium tannage is low, unabsorbed chromium be discharged in waste water produce be difficult to effectively to utilize containing chromium solid waste, contaminate environment.The present invention adds methacrylic acid, distilled water bottoming in there-necked flask, and heating in water bath drips methacrylic acid and initiator, isothermal reaction, and cooling discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant; Get under vinyl polymer tanning agent is placed in dispersion skin grinder and stir, slowly add SiO
2aerogel, at the uniform velocity stirs discharging, obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.When chrome tanning adjuvant prepared by the present invention coordinates a small amount of chromium powder to be applied to ox-hide tanning, the carboxyl that its molecular chain contains can with chrome tanning agent coordination, improve the crosslinking degree of itself and collagen, effectively improve the hydrothermal stability of collagen, effectively can improve the exhaustion rate of chromium ion in body lotion.
Description
Technical field
The present invention relates to a kind of chrome tanning adjuvant and preparation method thereof, be specifically related to a kind of SiO
2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof.
Background technology
Along with leather industry develops rapidly, China has become manufacturing center and the trade center of World Leather Industry.In process hides operation, tanning agent is the material making rawhide become leather generation qualitative change process, chrome tanning experienced by the development of more than 100 year, now become topmost process for tanning in light leather production, but chromium agent specific absorption is low in traditional chromic tanning, only have about 60% ~ 70%, unabsorbed chromium is discharged in waste water, and produce be difficult to effectively to utilize containing chromium solid waste, and the trivalent chromium of chrome tanning agent can be converted into the sexavalent chrome with carcinogenesis under certain condition, this aggravates the worry of people to chrome tanning agent undoubtedly, has also upgraded containing the hazard rating of chromium pollutant.Adopt clearer production technology, reduce energy consumption and the pollutant emission of Leather Industry from source, become the only way of Leather Industry Sustainable development.And few chrome tanning or high-absorption chrome tanning method simple to operate due to it, do not change existing technique, and production cost increasing little, is reduce one of easy method of pollution of chromium most convenient.
SiO
2aerogel is a kind of typical nano-porous materials, and its structure is made up of nano particle skeleton, and have the three-dimensional manometer network structure of high-permeability, specific surface area is generally 600 ~ 1200m
2/ g
-1, hole ratio is up to more than 90%, and mean pore size is at tens ran, therefore SiO
2aerogel has good characterization of adsorption.If by rights by SiO
2aerogel is incorporated in vinyl polymer matrix, can improve the absorption of vinyl polymer to chrome tanning agent.
Summary of the invention
The object of this invention is to provide a kind of SiO
2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof, improve the utilization ratio of chrome tanning agent, after tanning, waste liquid does not pollute environment.
The technical solution adopted in the present invention is:
SiO
2the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant, is characterized in that:
Realized by following steps:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymer tanning agent 60 ~ 90g, stirs under being placed in dispersion skin grinder, slowly adds 0.6 ~ 4.5gSiO
2aerogel, at the uniform velocity stirs 30 ~ 50min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
In step one, initiator is ammonium persulphate.
As described in SiO
2the chrome tanning adjuvant that the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant obtains.
The present invention has the following advantages:
SiO prepared by the present invention
2when aerogel/vinyl polymer compound high absorption chrome tanning adjuvant coordinates a small amount of chromium powder to be applied to ox-hide tanning, the carboxyl that its molecular chain contains can with chrome tanning agent coordination, improve the crosslinking degree of itself and collagen, effectively can improve the hydrothermal stability of collagen, and SiO
2aerogel has good characterization of adsorption, acts synergistically with vinyl polymer, can be reduced to 367.1g/L by the chromium content in waste tanning liquor, become obviously thick, excellent property simultaneously by the 2873.5mg/L of conventional chrome tanning.
Embodiment
Below in conjunction with embodiment, the present invention will be described in detail.
SiO involved in the present invention
2the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant, is realized by following steps:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymer tanning agent 60 ~ 90g, stirs under being placed in dispersion skin grinder, slowly adds 0.6 ~ 4.5gSiO
2aerogel, at the uniform velocity stirs 30 ~ 50min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
In step one, initiator is ammonium persulphate.
Embodiment 1:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymer tanning agent 60g, stirs under being placed in dispersion skin grinder, slowly adds 4.5gSiO
2aerogel, at the uniform velocity stirs 30min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
In step one, initiator is ammonium persulphate.
Embodiment 2:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymer tanning agent 75g, stirs under being placed in dispersion skin grinder, slowly adds 2.5gSiO
2aerogel, at the uniform velocity stirs 40min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
In step one, initiator is ammonium persulphate.
Embodiment 3:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymer tanning agent 90g, stirs under being placed in dispersion skin grinder, slowly adds 0.6gSiO
2aerogel, at the uniform velocity stirs 50min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
In step one, initiator is ammonium persulphate.
SiO prepared by the present invention
2when aerogel/vinyl polymer compound high absorption chrome tanning adjuvant coordinates a small amount of chromium powder to be applied to ox-hide tanning, the carboxyl that its molecular chain contains can with chrome tanning agent coordination, improve the crosslinking degree of itself and collagen, effectively can improve the hydrothermal stability of collagen, and SiO
2aerogel has good characterization of adsorption, acts synergistically with vinyl polymer, can be reduced to 367.1g/L by the chromium content in waste tanning liquor, become obviously thick, excellent property simultaneously by the 2873.5mg/L of conventional chrome tanning.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading specification sheets of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (3)
1.SiO
2the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant, is characterized in that:
Realized by following steps:
Step one: add methacrylic acid 45g, distilled water 227g bottoming in there-necked flask, then heating in water bath, when temperature reaches 80 DEG C, drip 45g methacrylic acid and 7.2g initiator 40min, isothermal reaction 4h respectively, cooling, discharging, obtains vinyl polymerization high absorption chrome tanning adjuvant;
Step 2: get vinyl polymerization high absorption chrome tanning adjuvant 60 ~ 90g, stirs under being placed in dispersion skin grinder, slowly adds 0.6 ~ 4.5gSiO
2aerogel, at the uniform velocity stirs 30 ~ 50min, and discharging obtains SiO
2aerogel/vinyl polymer high absorption chrome tanning adjuvant.
2. SiO according to claim 1
2the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant, is characterized in that:
In step one, initiator is ammonium persulphate.
3. SiO as claimed in claim 2
2the chrome tanning adjuvant that the preparation method of aerogel/vinyl polymer compound high absorption chrome tanning adjuvant obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629623.5A CN104450995B (en) | 2014-11-11 | 2014-11-11 | SiO 2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629623.5A CN104450995B (en) | 2014-11-11 | 2014-11-11 | SiO 2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104450995A CN104450995A (en) | 2015-03-25 |
| CN104450995B true CN104450995B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410629623.5A Active CN104450995B (en) | 2014-11-11 | 2014-11-11 | SiO 2aerogel/vinyl polymer compound high absorption chrome tanning adjuvant and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105949369B (en) * | 2016-06-17 | 2018-06-15 | 陕西科技大学 | The preparation method of leather multifunctional water talcum/polymer nanocomposite composite assistant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61222596A (en) * | 1985-03-28 | 1986-10-03 | Daido Steel Co Ltd | Melt treatment method |
| EP0583697A2 (en) * | 1992-08-14 | 1994-02-23 | Hoechst Aktiengesellschaft | Tanning process saving chrome and improved fixing of chrome |
| CN101240354B (en) * | 2008-03-12 | 2011-02-16 | 河南大学 | Acrylic resin/SiO2 nano composite tanning agent and preparation method thereof |
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Effective date of registration: 20170322 Address after: 276400 Yishui, Shandong Province, Mount Lu,, the project Hill Road (South Second Ring) to the North Patentee after: Shandong Li Ning science and technology novel material company limited Address before: 710021 Shaanxi city of Xi'an province Weiyang University City Patentee before: Shaanxi University of Science and Technology |
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