CN103711034A - Ultrafine zinc stearate water-based dispersion solution and preparation method therefor - Google Patents
Ultrafine zinc stearate water-based dispersion solution and preparation method therefor Download PDFInfo
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- CN103711034A CN103711034A CN201310645697.3A CN201310645697A CN103711034A CN 103711034 A CN103711034 A CN 103711034A CN 201310645697 A CN201310645697 A CN 201310645697A CN 103711034 A CN103711034 A CN 103711034A
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- stearic acid
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Abstract
The invention relates to the zinc stearate technology field, and especially relates to an ultrafine zinc stearate water-based dispersion solution and a preparation method therefor. The method comprises the following steps: a mixture of stearic acid, part of emulsifiers and water is heated to above the melting point of stearic acid and subjected to pre-dispersion; water, the rest emulsifiers and dispersants are added and phase inversion of stearic acid is carried out, then the dispersion is carried out for 20-30min until a uniform dispersion solution of stearic acid is formed; zinc oxide, water and dispersants are mixed and a zinc oxide dispersion solution is obtained; the above stearic acid dispersion solution is added to the zinc oxide dispersion solution and the reaction is carried out for 2h at the temperature of being below the melting point of stearic acid, then sterilizing agents and antifoaming agents are added, and the target product is obtained. No film is generated when the ultrafine zinc stearate water-based dispersion solution is exposed in air, the viscosity is low, and the ultrafine zinc stearate water-based dispersion solution has good mechanical and chemical stability. In addition, the product is nontoxic, has no abnormal odour, is environmentally friendly, and has ideal sensitization and lubrication effects.
Description
Technical field
The present invention relates to zinc stearate technical field, relate in particular to a kind of paper industry sensitizer, lubricant of being mainly used in, ultra-fine Zinc stearate water dispersion liquid of rubber and plastic industry isolating agent and water paint functional aid and preparation method thereof.
Background technology
Ultra-fine Zinc stearate water dispersion liquid is widely used in papermaking as lubricant, isolating agent, coating function additive, rubber and plastic, the fields such as coating.Because zinc stearate is typical water-insoluble metal soap soap, be in being scattered in system with particle state under the effect of aqueous promoter and bring into play its effect, and particle size directly affects the dispersive property of zinc stearate, normal conditions particle diameter is large, be not easy to disperse, and in system, easily precipitate, directly affect result of use.
Current ultra-fine Zinc stearate water dispersion liquid is mainly to use two-step method, first makes zinc stearate dry powder, then grinds, and disperses to obtain.There is open defect in this technique: in preparation process, need repeatedly to feed in raw material, cannot avoid grinding step and size ratio thicker (>10 μ m), cost is high.In view of the common grinding tool of production is difficult to make zinc stearate, reach corpusculed, Patents discloses the preparation technology of some ultra-fine Zinc stearate water dispersion liquids both at home and abroad.Chinese invention patent ZL200610096473.1 is used two-step process to carry out pre-dispersed to zinc stearate, adopting afterwards special equipment to carry out superfine grinding emulsification makes the particle diameter of dispersion liquid reach 1 μ m, although this technique can obtain ultra-fine zinc stearate dispersion liquid, but milling time is long, to milling apparatus, require very high.ZL201010559926.3 has adopted a kind of high pressure one step emulsion process technique, the dispersion particle size <4.8 μ m obtaining, and technique is fairly simple, but need to adopt high-pressure emulsification dispersing apparatus, and equipment investment is large, and maintenance cost is high.US6162836 discloses a kind of by the method for stearic acid and zinc oxide directly synthetic zinc stearate dispersion liquid in water, the dispersion liquid average grain diameter <2.8 μ m obtaining, the method is added drop-wise to the stearic acid of heating and melting in zinc oxide fluid dispersion and reacts at the temperature higher than stearic acid fusing point, from practice, the method need to be used heat-preserving equipment to maintain stearic liquid condition, need in addition to use high dispersive equipment to carry out high shear to stearic acid enough little to guarantee the stearic acid particle diameter in reaction system, and high shear high dispersive has adverse effect to the stability of dispersion liquid.
Therefore, how simply to solve efficiently ultra-fine Zinc stearate water dispersion liquid corpusculed technical barrier and be still the emphasis of being badly in need of breakthrough.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and provide a kind of simple efficient, processing ease, without ultra-fine Zinc stearate water dispersion liquid of special installation and preparation method thereof, its know-why is directly to be reacted and obtain ultra-fine Zinc stearate water dispersion liquid by stearic acid late and zinc oxide fluid dispersion, to the fine of zinc stearate particle diameter, is to realize by controlling stearic acid late particle diameter.
For achieving the above object, the present invention adopts following technical scheme.
A ultra-fine Zinc stearate water dispersion liquid, described ultra-fine Zinc stearate water dispersion liquid is reacted and obtains at the temperature lower than stearic acid fusing point by the stearic acid late disperseing in advance and zinc oxide fluid dispersion; The percentage by weight of stearic acid late and zinc oxide fluid dispersion is respectively:
Stearic acid late 65 ~ 85%, wherein
Water 30 ~ 50%,
Stearic acid 15 ~ 30%,
Dispersant 0.6 ~ 2.5%,
Emulsifying agent 3.2 ~ 7.5%,
Zinc oxide fluid dispersion 15 ~ 35%, wherein
Water 7.5 ~ 23%
Zinc oxide 2.1 ~ 4.2%,
Dispersant 0.3 ~ 1.2%,
Defoamer 0.3 ~ 0.6%,
Bactericide 0.1 ~ 0.6%,
The percentage by weight sum of each component should be 100% above;
Preferably, described ultra-fine Zinc stearate water dispersion liquid solids content is 34.4 ~ 46.1%, particle diameter <1.9 μ m, range of viscosities 42 ~ 195mPa.S.
Preferably, described stearic acid late particle diameter <1.5 μ m.
Preferably, described dispersant is one or more in alkyl glycoside class dispersant, polyethenoxy ether class dispersant, modification Organic fluoride wetting dispersing agent, oxirane higher aliphatic condensation product, polyvinyl alcohol, polyacrylic acid dipersant.
Preferably, described emulsifying agent is polyoxyethylene 20 sorbitan monostearate, polyoxyethylene 20 sorbitan monolaurate, in sorbitan mono-laurate or sorbitan monostearate two kinds.
What preferably, described bactericide was pentafluranol sodium, benzyl bromide a-bromotoluene in acetic acid esters or tetrafluoro m-dicyanobenzene is a kind of.
Preferably, described defoamer is a kind of in water-soluble silicon defoamer, senior phosphate or modified polyether.
A preparation method for ultra-fine Zinc stearate water dispersion liquid, comprises the following steps:
The first step, is heated to stearic acid fusing point by the mixture of stearic acid, partial emulsifier and water and carries out above pre-dispersed;
Second step, adds water, remaining emulsifying agent and dispersant to carry out stearic phase inversion, then disperses 20 ~ 30 minutes until stearic acid forms uniform dispersion;
The 3rd step, is mixed to get zinc oxide fluid dispersion by zinc oxide, water and dispersant;
The 4th step, joins above-mentioned stearic acid dispersion liquid in zinc oxide fluid dispersion and at the temperature lower than stearic acid fusing point, reacts 2 hours, adds afterwards bactericide, after defoamer, can obtain target product.
Beneficial effect of the present invention is: the advantage of a kind of ultra-fine Zinc stearate water dispersion liquid of the present invention and preparation method thereof is, under the prerequisite without special installation, by the control of stearic acid late particle diameter being reached to the object of fine water-based zinc stearate dispersion liquid, at the temperature lower than stearic acid fusing point, react and can effectively guarantee reaction rate in addition, avoided again making the risk of zinc stearate particle diameter chap because stearic acid thawing causes particle to grow up for 2 times.Whole technological process is simply efficient, processing ease.Ultra-fine Zinc stearate water dispersion liquid of the present invention is exposed in air not conjunctiva, and viscosity is low, has good machinery, chemical stability.Product is nontoxic in addition, free from extraneous odour, environmentally friendly, and sensitizing, lubricant effect are all more satisfactory.
The specific embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
A kind of ultra-fine Zinc stearate water dispersion liquid of the present invention, by the stearic acid late disperseing in advance and zinc oxide fluid dispersion, (50 ℃) reaction at the temperature lower than stearic acid fusing point obtains described ultra-fine Zinc stearate water dispersion liquid; The percentage by weight of stearic acid late and zinc oxide fluid dispersion is respectively:
Stearic acid late 65 ~ 85%, wherein
Water 30 ~ 50%,
Stearic acid 15 ~ 30%,
Dispersant 0.6 ~ 2.5%,
Emulsifying agent 3.2 ~ 7.5%,
Zinc oxide fluid dispersion 15 ~ 35%, wherein
Water 7.5 ~ 23%
Zinc oxide 2.1 ~ 4.2%,
Dispersant 0.3 ~ 1.2%,
Defoamer 0.3 ~ 0.6%,
Bactericide 0.1 ~ 0.6%,
The percentage by weight sum of each component should be 100% above.Stearic acid late and zinc oxide fluid dispersion add successively and react preparation according to above-mentioned component proportioning.
Preferably, described ultra-fine Zinc stearate water dispersion liquid solids content is 34.4 ~ 46.1%, particle diameter <1.9 μ m, range of viscosities 42 ~ 195mPa.S.
Preferably, described stearic acid late particle diameter <1.5 μ m.Preferably, described dispersant is one or more in alkyl glycoside class dispersant, polyethenoxy ether class dispersant, modification Organic fluoride wetting dispersing agent, oxirane higher aliphatic condensation product, polyvinyl alcohol, polyacrylic acid dipersant.Preferably, described emulsifying agent is polyoxyethylene 20 sorbitan monostearate, polyoxyethylene 20 sorbitan monolaurate, in sorbitan mono-laurate or sorbitan monostearate two kinds.What preferably, described bactericide was pentafluranol sodium, benzyl bromide a-bromotoluene in acetic acid esters or tetrafluoro m-dicyanobenzene is a kind of.Preferably, described defoamer is a kind of in water-soluble silicon defoamer, senior phosphate or modified polyether.
The preparation method of above-mentioned a kind of ultra-fine Zinc stearate water dispersion liquid, comprises the following steps:
The first step, is heated to stearic acid fusing point above (>60 ℃) by the mixture of stearic acid, partial emulsifier and water and carries out pre-dispersed;
Second step, adds water, remaining emulsifying agent and dispersant to carry out stearic phase inversion, then disperses 20 ~ 30 minutes (300rpm) until stearic acid forms uniform dispersion;
The 3rd step, is mixed to get zinc oxide fluid dispersion by zinc oxide, water and dispersant;
The 4th step, joins in zinc oxide fluid dispersion at the temperature lower than stearic acid fusing point (50 ℃) reaction 2 hours by above-mentioned stearic acid dispersion liquid, adds afterwards bactericide, after defoamer, can obtain target product.
It is below the specific embodiment of the present invention.
Example 1:
The mixture of 14.5g stearic acid, 1.2g sorbitan monostearate and 10g water is heated to stearic acid fusing point above (>60 ℃) to carry out pre-dispersed, then add 25g water, 2.4g polyoxyethylene 20 sorbitan monostearate and 1.4g oxirane higher aliphatic condensation product to carry out stearic phase inversion, disperse afterwards 20 minutes (300rpm) until stearic acid forms homogeneous latex emulsion, gained stearic acid late maximum particle diameter 0.6 μ m (American-European gram laser granularity distribution tester LJ-POP6 surveys, lower same); 2g zinc oxide, 8g water, 0.7g dispersant are mixed to get to zinc oxide fluid dispersion, afterwards above-mentioned stearic acid late is joined in zinc oxide fluid dispersion at the temperature lower than stearic acid fusing point to (50 ℃) reaction 2 hours, obtain target product after adding afterwards 0.2g aqueous silane defoamer 602,0.1g pentafluranol sodium.Products obtained therefrom viscosity 42mPa.s (NDJ-1 rotary viscosity instrumentation, lower same), maximum particle diameter 0.9 μ m, solids content 34.4%.
Embodiment 2:
The mixture of 29g stearic acid, 2.4g sorbitan monostearate and 20g water is heated to stearic acid fusing point above (>60 ℃) to carry out pre-dispersed, then add 40g water, 4.8g polyoxyethylene 20 sorbitan monostearate and 2.8g APG14 to carry out stearic phase inversion, disperse afterwards 25 minutes (300rpm) until stearic acid forms homogeneous latex emulsion, gained stearic acid late maximum particle diameter 0.9 μ m; 4g zinc oxide 16g water, 1.4g APG14 are mixed to get to zinc oxide fluid dispersion, afterwards above-mentioned stearic acid late is joined in zinc oxide fluid dispersion at the temperature lower than stearic acid fusing point to (50 ℃) reaction 2 hours, obtain target product after adding afterwards 0.4g aqueous silane defoamer 602,0.2g tributyl tin.Products obtained therefrom viscosity 74mPa.s, maximum particle diameter 1.1 μ m, solids content 37.2%.
Example 3:
The mixture of 40g stearic acid, 3.2g sorbitan monooleate and 20g water is heated to stearic acid fusing point above (>60 ℃) to carry out pre-dispersed, then add 30g water, 6.4g polyoxyethylene 20 sorbitan monooleate and 1.0g modification Organic fluoride wetting dispersing agent 1010 to carry out stearic phase inversion, disperse afterwards 30 minutes (300rpm) until stearic acid forms homogeneous latex emulsion, gained stearic acid late maximum particle diameter 1.1 μ m; 5.6g zinc oxide, 24g water, 1.2g Sodium Polyacrylate dispersant are mixed to get to zinc oxide fluid dispersion, afterwards above-mentioned stearic acid late is joined in zinc oxide fluid dispersion at the temperature lower than stearic acid fusing point to (50 ℃) reaction 2 hours, obtain target product after adding afterwards 0.6g KEPER-716,0.4g benzyl bromide a-bromotoluene for acetic acid esters.Products obtained therefrom viscosity 130mPa.s, maximum particle diameter 1.5 μ m, solids content 44.5%.
Example 4:
The mixture of 60g stearic acid, 5g sorbitan monooleate and 30g water is heated to stearic acid fusing point above (>60 ℃) to carry out pre-dispersed, then add 48g water, 10g polyoxyethylene 20 sorbitan monostearate and 5g polyvinyl alcohol dispersant to carry out stearic phase inversion, disperse afterwards 30 minutes (300rpm) until stearic acid forms homogeneous latex emulsion, gained stearic acid late maximum particle diameter 1.5 μ m; 8.4g zinc oxide, 30g water, 2.4g NP-14 are mixed to get to zinc oxide fluid dispersion, afterwards above-mentioned stearic acid late is joined in zinc oxide fluid dispersion at the temperature lower than stearic acid fusing point to (50 ℃) reaction 2 hours, obtain target product after adding afterwards 0.8g aqueous silane defoamer 602,0.8g tetrafluoro m-dicyanobenzene.Products obtained therefrom viscosity 195mPa.s, maximum particle diameter 1.9 μ m, solids content 46.1%.
In sum, the prepared ultra-fine Zinc stearate water dispersion liquid of the present invention is exposed in air not conjunctiva, and viscosity is low, has good machinery, chemical stability.Product is nontoxic in addition, free from extraneous odour, environmentally friendly, and sensitizing, lubricant effect are all more satisfactory.
The above is only better embodiment of the present invention, and the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Claims (7)
1. a ultra-fine Zinc stearate water dispersion liquid, is characterized in that:
Described ultra-fine Zinc stearate water dispersion liquid is reacted and obtains at the temperature lower than stearic acid fusing point by the stearic acid late disperseing in advance and zinc oxide fluid dispersion; The percentage by weight of stearic acid late and zinc oxide fluid dispersion is respectively:
Stearic acid late 65 ~ 85%, wherein
Water 30 ~ 50%,
Stearic acid 15 ~ 30%,
Dispersant 0.6 ~ 2.5%,
Emulsifying agent 3.2 ~ 7.5%,
Zinc oxide fluid dispersion 15 ~ 35%, wherein
Water 7.5 ~ 23%
Zinc oxide 2.1 ~ 4.2%,
Dispersant 0.3 ~ 1.2%,
Defoamer 0.3 ~ 0.6%,
Bactericide 0.1 ~ 0.6%,
The percentage by weight sum of each component should be 100% above;
Described ultra-fine Zinc stearate water dispersion liquid solids content is 34.4 ~ 46.1%, particle diameter <1.9 μ m, range of viscosities 42 ~ 195mPa.S.
2. a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, is characterized in that: described stearic acid late particle diameter <1.5 μ m.
3. a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, is characterized in that: described dispersant is one or more in alkyl glycoside class dispersant, polyethenoxy ether class dispersant, modification Organic fluoride wetting dispersing agent, oxirane higher aliphatic condensation product, polyvinyl alcohol, polyacrylic acid dipersant.
4. a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, it is characterized in that: described emulsifying agent is polyoxyethylene 20 sorbitan monostearate, polyoxyethylene 20 sorbitan monolaurate, in sorbitan mono-laurate or sorbitan monostearate two kinds.
5. a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, is characterized in that: what described bactericide was pentafluranol sodium, benzyl bromide a-bromotoluene in acetic acid esters or tetrafluoro m-dicyanobenzene is a kind of.
6. a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, is characterized in that: described defoamer is a kind of in water-soluble silicon defoamer, senior phosphate or modified polyether.
7. the preparation method of a kind of ultra-fine Zinc stearate water dispersion liquid according to claim 1, is characterized in that, comprises the following steps:
The first step, is heated to stearic acid fusing point by the mixture of stearic acid, partial emulsifier and water and carries out above pre-dispersed;
Second step, adds water, remaining emulsifying agent and dispersant to carry out stearic phase inversion, then disperses 20 ~ 30 minutes until stearic acid forms uniform dispersion;
The 3rd step, is mixed to get zinc oxide fluid dispersion by zinc oxide, water and dispersant;
The 4th step, joins above-mentioned stearic acid dispersion liquid in zinc oxide fluid dispersion and at the temperature lower than stearic acid fusing point, reacts 2 hours, adds afterwards bactericide, after defoamer, can obtain target product.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104946209A (en) * | 2015-07-14 | 2015-09-30 | 贵州华益能环保科技有限公司 | Preparation method of phase change energy storage emulsion and application thereof |
| CN106087552A (en) * | 2016-06-20 | 2016-11-09 | 上海东升新材料有限公司 | Preparation method of a kind of water-based zinc stearate dispersion liquid and products thereof and application |
| CN106868936A (en) * | 2015-12-11 | 2017-06-20 | 中科院广州化学有限公司南雄材料生产基地 | A kind of water-based zinc stearate emulsion and preparation method and application |
| CN107253910A (en) * | 2017-06-13 | 2017-10-17 | 江苏九洲环保技术有限公司 | The zinc stearate colloidal sol and preparation method of a kind of low free acid content |
| CN107642000A (en) * | 2017-11-09 | 2018-01-30 | 新沂市星辰新材料科技有限公司 | A kind of environment-friendly type aqueous zinc stearate dispersion liquid and its preparation technology |
| CN107938427A (en) * | 2017-11-20 | 2018-04-20 | 湖州市菱湖新望化学有限公司 | A kind of novel aqueous zinc stearate lotion and preparation method thereof |
| CN108411698A (en) * | 2018-03-08 | 2018-08-17 | 广东龙湖科技股份有限公司 | The preparation method of water-based zinc stearate lotion, the product by this method acquisition and its application |
| CN109024076A (en) * | 2018-09-20 | 2018-12-18 | 薛向东 | A kind of preparation method of water-based zinc stearate dispersion liquid |
| CN109529646A (en) * | 2018-12-10 | 2019-03-29 | 新沂市星辰新材料科技有限公司 | A kind of stabilized aqueous zinc stearate dispersion liquid of environmental protection and preparation method thereof |
| CN109957998A (en) * | 2017-12-14 | 2019-07-02 | 上海东升新材料有限公司 | Low bubble zinc stearate dispersion liquid of a kind of large arch dam and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946209A (en) * | 2015-07-14 | 2015-09-30 | 贵州华益能环保科技有限公司 | Preparation method of phase change energy storage emulsion and application thereof |
| CN106868936A (en) * | 2015-12-11 | 2017-06-20 | 中科院广州化学有限公司南雄材料生产基地 | A kind of water-based zinc stearate emulsion and preparation method and application |
| CN106087552A (en) * | 2016-06-20 | 2016-11-09 | 上海东升新材料有限公司 | Preparation method of a kind of water-based zinc stearate dispersion liquid and products thereof and application |
| CN106087552B (en) * | 2016-06-20 | 2021-02-02 | 上海东升新材料有限公司 | Preparation method of water-based zinc stearate dispersion liquid, product and application thereof |
| CN107253910A (en) * | 2017-06-13 | 2017-10-17 | 江苏九洲环保技术有限公司 | The zinc stearate colloidal sol and preparation method of a kind of low free acid content |
| CN107642000A (en) * | 2017-11-09 | 2018-01-30 | 新沂市星辰新材料科技有限公司 | A kind of environment-friendly type aqueous zinc stearate dispersion liquid and its preparation technology |
| CN107938427A (en) * | 2017-11-20 | 2018-04-20 | 湖州市菱湖新望化学有限公司 | A kind of novel aqueous zinc stearate lotion and preparation method thereof |
| CN109957998A (en) * | 2017-12-14 | 2019-07-02 | 上海东升新材料有限公司 | Low bubble zinc stearate dispersion liquid of a kind of large arch dam and preparation method thereof |
| CN108411698A (en) * | 2018-03-08 | 2018-08-17 | 广东龙湖科技股份有限公司 | The preparation method of water-based zinc stearate lotion, the product by this method acquisition and its application |
| CN109024076A (en) * | 2018-09-20 | 2018-12-18 | 薛向东 | A kind of preparation method of water-based zinc stearate dispersion liquid |
| CN109529646A (en) * | 2018-12-10 | 2019-03-29 | 新沂市星辰新材料科技有限公司 | A kind of stabilized aqueous zinc stearate dispersion liquid of environmental protection and preparation method thereof |
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