CN104789029A - Thickener for thickening water-based paints - Google Patents
Thickener for thickening water-based paints Download PDFInfo
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- CN104789029A CN104789029A CN201510206198.3A CN201510206198A CN104789029A CN 104789029 A CN104789029 A CN 104789029A CN 201510206198 A CN201510206198 A CN 201510206198A CN 104789029 A CN104789029 A CN 104789029A
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- Prior art keywords
- thickening
- water
- borne coatings
- wilkinite
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
Abstract
The invention discloses a thickener for thickening water-based paints, which prepared by the following steps: igniting sodium bentonite at 350-450 DEG C for 1 hour; adding the sodium bentonite into a 17-19 wt% sulfuric acid solution according to the solid-liquid mass ratio of 2.10-2.30, acidifying at 95-100 DEG C for 30 minutes, flocculating, deslagging, filtering, cleaning the spent acid, and drying; milling the acidified bentonite in a ball mill under the action of 40KHz ultrasonic for 4 hours; and passing through a 400-mesh screen to obtain the thickener. The thickener is used for thickening water-based paints.
Description
Technical field
The invention belongs to chemical field, relate to a kind of thickening material, more specifically, the present invention is a kind of thickening material for the preparation of playing thickening power during water-borne coatings for building.
Background technology
Modern architecture, construction, house ornamentation all be unable to do without coating, paint.The use of coating is not only decoration, effectively can also protect body material, extends the work-ing life of building, equipment etc.Water-borne coatings is a class low stain, the coating economizing the energy, resource-saving.Along with the reinforcement of people's environmental consciousness, water-borne coatings is subject to people's attention day by day, and related products is researched and developed widely.
In the process such as production, storage, construction of water-borne coatings, need to add thickening material and make coating under various shearing force condition, have viscosity required by technique.Customary thickeners has: the polyurethane thickener of inorganic thickening agent, modified-cellulose, polyacrylic ester and association type.Wherein inorganic thickening agent mainly polynite class has the clay mineral of well suspended.The characteristic that polynite has makes it in coating, have the several functions such as bonding, thickening, suspension, dispersion, emulsification, filling, can improve brushing property and the levelling property of coating, improve the water tolerance of coating.Polynite is applied widely in coatings industry, can be used as the thickening material of coating, suspension anti-sedimentation agent, additional adhesive etc.
Polynite as the advantage of water-borne coatings thickening material is: good suspension; Good with Miscibility, all applicable under pH condition more widely; Price is lower; Shortcoming is: consumption is large compared with organic thickening agent, and suspension, thickening properties are compared poor with the thickening material of other types.
Summary of the invention
The object of the present invention is to provide a kind of water-borne coatings thickening thickening material.
To achieve these goals, the present invention is by the following technical solutions:
A kind of water-borne coatings thickening thickening material, is characterized in that being prepared from by following method:
(1) by sodium bentonite calcination 1h under 350 ~ 450 DEG C of conditions;
(2) configuration quality mark is the sulphuric acid soln of 17 ~ 19%, adds the wilkinite that step (1) obtains, and the solid-liquid mass ratio of wilkinite and sulphuric acid soln is 2.10 ~ 2.30: 1, stir 30min under 95 ~ 100 DEG C of conditions and carry out acidification reaction, flocculation, slagging-off, filters;
(3) material step (2) obtained is introduced and is left standstill in groove, and add washing water, stir 1 ~ 2 minute, time of repose is 45min, extracts supernatant liquid, and repetitive scrubbing 4 ~ 9 times is 4 ~ 5 to clear liquid pH value, filters, and dries;
(4) wilkinite that step (3) obtains is put into ball mill, under the ul-trasonic irradiation of 40KHz, grind 4h, cross 200 mesh sieves, obtain water-borne coatings thickening thickening material.
Further, the calcination temperature described in step (1) is 380 DEG C.
6 times of the quality of step (3) described washing water is step (2) acquisition quality of material.
The present invention, first by sodium bentonite calcination, adds bentonitic bedding void, utilizes the cation exchange properties of sodium bentonite, by sulfuric acid activated, by the H of mineral acid
+na between displacement bentonite bed
+, increase the space of structure cell, the cavity of expansion, dredged cavity, increase specific surface area, enhance surfactivity, add ion exchange property, make the wilkinite of acidifying possess the character such as Inter layer adsorption, bonding and attract electrons effect occur, meanwhile, reach bentonitic object of purifying.By ultrasonic grinding, further improve bentonitic specific surface area and electronegativity, thus improve wilkinite for hydroxyl and the good affinity of carboxyl isopolarity group.Water-borne coatings thickening thickening material of the present invention can play good thickening effectiveness in the process of preparation water-borne coatings for building.
The concrete steps of aforesaid method are further described below:
1. calcination wilkinite.Sodium bentonite is carried out calcination at a certain temperature, removes a part of middle water and Bound moisture in wilkinite, increase wilkinite bedding void, make it loosen.Temperature will be suitable for, and ensures to remove middle water and Bound moisture, again can not be too high and sintered by wilkinite.Suitable temperature is 350 ~ 450 DEG C, preferably 380 DEG C.
2. acid activation.The sulphuric acid soln of configuration certain mass mark, adds by certain solid-liquid mass ratio the wilkinite that step (1) obtains, stirs 30min and carry out acidification reaction, flocculation, slagging-off, filter under 95 ~ 100 DEG C of conditions.The massfraction of sulphuric acid soln is 17 ~ 19%, and wilkinite is 2.10 ~ 2.30 with the solid-liquid mass ratio of sulphuric acid soln.
3. clean spent acid.Material step 2 obtained is introduced and is left standstill in groove, and add a certain amount of water, stir 1 ~ 2 minute, time of repose is 45min, extracts supernatant liquid, and repetitive scrubbing to clear liquid pH value is 4 ~ 5, filters, and dries.6 times of the quality of washing water is step 2 acquisition quality of material.
4. ultrasonic grinding.Wilkinite step 3 obtained puts into ball mill, under the ul-trasonic irradiation of 40KHz, grind 4h.
5. the material obtained by step 4 is crossed 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Water-borne coatings thickening thickening material obtained according to the method described above can be applicable to prepare in water-borne coatings for building and plays good thickening power.
Embodiment
Embodiment 1
Get 1050kg sodium bentonite, calcination 1h at 350 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 17%, stirs 30min and carry out acid activation disposal under 95 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 2
Get 1070kg sodium bentonite, calcination 1h at 370 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 17.4%, stirs 30min and carry out acid activation disposal under 96 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 3
Get 1090kg sodium bentonite, calcination 1h at 390 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 17.8%, stirs 30min and carry out acid activation disposal under 97 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 4
Get 1110kg sodium bentonite, calcination 1h at 410 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 18.2%, stirs 30min and carry out acid activation disposal under 98 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 5
Get 1130kg sodium bentonite, calcination 1h at 430 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 18.6%, stirs 30min and carry out acid activation disposal under 99 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 6
Get 1150kg sodium bentonite, calcination 1h at 450 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 19%, stirs 30min and carry out acid activation disposal under 100 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 7
Get 1150kg sodium bentonite, calcination 1h at 380 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 17%, stirs 30min and carry out acid activation disposal under 95 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
Embodiment 8
Get 1050kg sodium bentonite, calcination 1h at 380 DEG C.
Configuration 500kg massfraction is the sulphuric acid soln of 19%, stirs 30min and carry out acid activation disposal under 95 DEG C of conditions.Flocculation, slagging-off, filters.
Adding a certain amount of water cleaning spent acid by obtaining 6 times of quality of material, stirring 60s, leaving standstill 45min, extracting supernatant liquid out, repeatedly clean to supernatant liquid pH value be 4 ~ 5.Filter, dry.
Wilkinite after drying is put into ball mill, under the ul-trasonic irradiation of 40KHz, grinds 4h, prepare Ultra-fine Bentonite, cross 400 mesh sieves, obtain water-borne coatings thickening thickening material.
The effect of product of the present invention in preparation water-borne coatings for building sees the following form:
| Whiteness | Colloid index (mL/15g) | Loading capacity (me/g) | Expansion multiple | |
| Embodiment 1 | 80.21 | 91.54 | 85.37 | 21.43 |
| Embodiment 2 | 80.98 | 92.76 | 85.75 | 21.72 |
| Embodiment 3 | 81.23 | 92.49 | 86.74 | 22.39 |
| Embodiment 4 | 81.64 | 93.75 | 87.08 | 22.52 |
| Embodiment 5 | 82.65 | 94.26 | 87.68 | 23.98 |
| Embodiment 6 | 82.41 | 94.68 | 88.52 | 23.63 |
| Embodiment 7 | 84.26 | 95.07 | 87.21 | 24.53 |
| Embodiment 8 | 84.54 | 93.57 | 87.58 | 23.57 |
Water-borne coatings thickening thickening material of the present invention can play good thickening effectiveness in the process of preparation water-borne coatings for building.
Claims (3)
1. a water-borne coatings thickening thickening material, is characterized in that being prepared from by following method:
(1) by sodium bentonite calcination 1h under 350 ~ 450 DEG C of conditions;
(2) configuration quality mark is the sulphuric acid soln of 17 ~ 19%, adds the wilkinite that step (1) obtains, and the solid-liquid mass ratio of wilkinite and sulphuric acid soln is 2.10 ~ 2.30: 1, stir 30min under 95 ~ 100 DEG C of conditions and carry out acidification reaction, flocculation, slagging-off, filters;
(3) material step (2) obtained is introduced and is left standstill in groove, and add washing water, stir 1 ~ 2 minute, time of repose is 45min, extracts supernatant liquid, and repetitive scrubbing 4 ~ 9 times is 4 ~ 5 to clear liquid pH value, filters, and dries;
(4) wilkinite that step (3) obtains is put into ball mill, under the ul-trasonic irradiation of 40KHz, grind 4h, cross 200 mesh sieves, obtain water-borne coatings thickening thickening material.
2. water-borne coatings thickening thickening material as claimed in claim 1, it is characterized in that, the calcination temperature described in step (1) is 380 DEG C.
3. water-borne coatings thickening thickening material as claimed in claim 1, is characterized in that, 6 times of the quality of step (3) described washing water is step (2) acquisition quality of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206198.3A CN104789029B (en) | 2015-04-28 | 2015-04-28 | A kind of water paint thickening thickening agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206198.3A CN104789029B (en) | 2015-04-28 | 2015-04-28 | A kind of water paint thickening thickening agent |
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| Publication Number | Publication Date |
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| CN104789029A true CN104789029A (en) | 2015-07-22 |
| CN104789029B CN104789029B (en) | 2017-04-05 |
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| CN201510206198.3A Active CN104789029B (en) | 2015-04-28 | 2015-04-28 | A kind of water paint thickening thickening agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180538A (en) * | 2016-08-26 | 2016-12-07 | 蚌埠市北晨微型机床厂 | A kind of core material with high thermal conductivity energy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182002A (en) * | 2007-10-26 | 2008-05-21 | 江苏工业学院 | Method for synthesizing organic bentonite by ultrasonic wave combined with microwave |
| CN101362073A (en) * | 2008-09-27 | 2009-02-11 | 山东大学 | Preparation method of acidification sludge bentonite granules |
| CN101805459A (en) * | 2010-05-05 | 2010-08-18 | 苏州兰特纳米材料科技有限公司 | Nano bentonite for plastic modification and preparation method thereof |
-
2015
- 2015-04-28 CN CN201510206198.3A patent/CN104789029B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182002A (en) * | 2007-10-26 | 2008-05-21 | 江苏工业学院 | Method for synthesizing organic bentonite by ultrasonic wave combined with microwave |
| CN101362073A (en) * | 2008-09-27 | 2009-02-11 | 山东大学 | Preparation method of acidification sludge bentonite granules |
| CN101805459A (en) * | 2010-05-05 | 2010-08-18 | 苏州兰特纳米材料科技有限公司 | Nano bentonite for plastic modification and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 梁虎南等: "膨润土酸化改性及其在彩喷纸应用研究", 《中国造纸学会第十三届学术年会论文集（上）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180538A (en) * | 2016-08-26 | 2016-12-07 | 蚌埠市北晨微型机床厂 | A kind of core material with high thermal conductivity energy |
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| CN104789029B (en) | 2017-04-05 |
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Denomination of invention: A kind of thickener for thickening water-based paint Effective date of registration: 20220829 Granted publication date: 20170405 Pledgee: Zhangjiakou Bank Co.,Ltd. Yangyuan County Sub branch Pledgor: YANGYUAN COUNTY RENHENG FINE CLAY Co.,Ltd. Registration number: Y2022980013890 |