CN104497639A - Preparation method of zinc white composite powder - Google Patents
Preparation method of zinc white composite powder Download PDFInfo
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- CN104497639A CN104497639A CN201510019563.XA CN201510019563A CN104497639A CN 104497639 A CN104497639 A CN 104497639A CN 201510019563 A CN201510019563 A CN 201510019563A CN 104497639 A CN104497639 A CN 104497639A
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- zinc white
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Abstract
The invention relates to a preparation method of zinc white composite powder. The method comprises the steps as follows: a, uniformly mixing superfine anhydrite powder and zinc white powder to be fine powder mixture in parts by weight: 5-25 parts of superfine anhydrite powder, and 75-95 parts of zinc white powder; b, adding fine powder mixture obtained in step a, a dispersing agent and water into a stirring barrel, carrying out wet process mixing on a magnetic stirrer to completely mix a slurry and the dispersing agent and controlling the temperature of the slurry; c, grinding after adding a coupling agent into the slurry in step b, wherein a grinding medium is agate; and d, carrying out suction filtration on the mixed slurry obtained in step c, carrying out suction filtration on the mixed slurry obtained in step c, washing filter cakes with water, drying, cooling and crushing to obtain the zinc white composite powder. The composite zinc white powder prepared by the method provided by the invention is better in whiteness, covering performance, weather ability oil absorption and the like, and lower in production cost, and is applicable to coating, printing and dyeing, plastic, rubber and other industries, thereby having a good market prospect.
Description
Technical field
The present invention relates to a kind of preparation method of zinc white composite powder.
Background technology
At present, zinc white is widely used in the painted of ABS resin, polystyrene, epoxy resin, resol, aminoresin and polyvinyl chloride and paint and ink as a kind of inorganic white pigment; In addition, also can be used as the vulcanization leveller of rubber, strengthening agent and tinting material in rubber industry; Also for the production of varnished cloth, makeup, enamel, paper, leather, match, cable etc.; Also can be used for printing and dyeing, glass industry, medicine industry etc.; Also the sweetening agent of synthetic ammonia is used as; Also be used as electronic laser material, fluorescent material, fodder additives, magneticsubstance manufacture etc.
In order to save production cost, the composite powder of compounding technology manufacture is adopted to be well used in recent years.Zinc white composite powder, just by adopting cheap Inorganic nonmetal mineral as kernel, at its Surface coating one deck zinc white, prepares qualified zinc white composite powder when not affecting itself whiteness and hiding performance.
Summary of the invention
Object of the present invention is exactly just by adopting cheap Inorganic nonmetal mineral as kernel for current zinc white composite powder, at its Surface coating one deck zinc white, prepare qualified zinc white composite powder when not affecting itself whiteness and hiding performance, and a kind of preparation method of zinc white composite powder is provided.
The present invention includes following steps:
A) super-fine anhydrous terra alba and zinc white are uniformly mixed into fine powder mixture by following weight fraction ratio:
Super-fine anhydrous terra alba 5-25 part
Zinc white 75-95 part;
B) fine powder mixture obtained in step a and dispersion agent and water are joined in agitation vat, magnetic stirring apparatus carries out wet method stirring, mix completely with dispersion agent in the process forming slurries and control the temperature of slurries;
C) grind after adding coupling agent in slurries in stepb, grinding medium is agate again;
D) the mixed serum suction filtration obtained by step c, filter cake is washed, and dries, and cooling is pulverized, to be obtained final product.
Dispersion agent is water glass, and the add-on of dispersion agent is the 5-7% of fine powder mixture quality; Described coupling agent is titanic acid ester and silane coupling agent, and the add-on of coupling agent is the 1.5-3.5% of fine powder mixture quality.
Grinding whipping temp is 25-50 DEG C.
Grinding modification time is 60-150min.
Grinding modified device is star lapping machine.
Filtration cakes torrefaction temperature is 100 DEG C, and grinding mode is comminution by gas stream.
Product need seal preservation.
Advantage of the present invention is: the concrete technical process of the present invention is realized by grinding and mechanize student's federation and the coated step such as wet-process modified, a certain amount of dispersion agent and coupling agent is also added in process of lapping, utilize the effect of chemical bond energy, the effect of strengthening mechanically modifying, make that zinc white is evengranular to combine with gypsum crystal, form stable interface mode of connection, thus develop a kind of stable gypsum-zinc white composite prod.The better performances such as whiteness, covering performance, weathering resistance, oil number of the composite zinc white powder adopting the inventive method to prepare, and production cost is lower, can be used for the industries such as coating, printing and dyeing, papermaking, plastics and rubber, has good market outlook.
Embodiment
The present invention includes following steps:
A) super-fine anhydrous terra alba and zinc white are uniformly mixed into fine powder mixture by following weight fraction ratio:
Super-fine anhydrous terra alba 5-25 part
Zinc white 75-95 part;
B) fine powder mixture obtained in step a and dispersion agent and water are joined in agitation vat, magnetic stirring apparatus carries out wet method stirring, mix completely with dispersion agent in the process forming slurries and control the temperature of slurries;
C) grind after adding coupling agent in slurries in stepb, grinding medium is agate again;
D) the mixed serum suction filtration obtained by step c, filter cake is washed, and dries, and cooling is pulverized, to be obtained final product.
On the basis of above-mentioned preparation method, the further preferred embodiment that can also adopt comprises respectively:
dispersion agent described in step b is preferably water glass, and the add-on of dispersion agent is the 5-7% of fine powder mixture quality, and the increase along with dispersant dosage hides performance and strengthens gradually.
Coupling agent described in step c is preferably titanic acid ester and silane coupling agent, the add-on of coupling agent is the 1.5-3.5% of fine powder, coupling agent is in order to improve the interface interaction between inorganics and organism, the consumption of titanic acid ester and silane coupling agent has impact to opacifying power, but along with the increase of coupling agent consumption, hiding power value progressively reduces.
In the present invention, described grinding plant is preferably planetary-type grinding machine, although efficiency is lower, can avoid producing unnecessary equipment contaminate.
Described filtration cakes torrefaction temperature is preferably 100 DEG C, and the too low mixture that not easily makes of temperature dewaters, too high, makes coating film damage layer, affects membrane wrapping modified effect.
Described grinding mode is preferably comminution by gas stream.Grinding particle size is thinner, and efficiency is higher, and coating layer is not easily destroyed.
In step b, whipping temp is 25-50 DEG C, and it is tightr that temperature can make powder and dispersion agent merge; Milling time in step c, the preferred wet grinding time is 60-150min.The increase of milling time can strengthen the dispersiveness of composite particles, and reduce reunion caking phenomenon, the increase of simultaneous grinding time makes composite particles possess certain opacifying power.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.
Embodiment 1:
Be 5% carry out being stirred and heated to 25 DEG C by raw material 5 parts of dehydrated gyp-s and 95 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 2:
Be 5% carry out being stirred and heated to 25 DEG C by raw material 10 parts of dehydrated gyp-s and 90 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 3:
Be 5% carry out being stirred and heated to 25 DEG C by raw material 15 parts of dehydrated gyp-s and 85 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 4:
Be 5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 5:
Be 5% carry out being stirred and heated to 25 DEG C by raw material 25 parts of dehydrated gyp-s and 75 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 6:
Be 5.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 7:
Be 6.0% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 8:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 9:
Be 7.0% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 1.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 10:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.0%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 11:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 12:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 3.0%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 13:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 3.5%, carry out grinding modification 60min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 14:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 90min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 15:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 16:
Be 6.5% carry out being stirred and heated to 25 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 150min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 17:
Be 6.5% carry out being stirred and heated to 30 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 18:
Be 6.5% carry out being stirred and heated to 35 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 19:
Be 6.5% carry out being stirred and heated to 40 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 20:
Be 6.5% carry out being stirred and heated to 45 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Embodiment 21:
Be 6.5% carry out being stirred and heated to 50 DEG C by raw material 20 parts of dehydrated gyp-s and 80 parts of zinc white mixtures and water and silicate dispersant consumption, then slurries are transferred in star lapping machine, titanic acid ester and silane coupling agent consumption are 2.5%, carry out grinding modification 120min, then by mixed serum filtration, 100 DEG C of oven dry, comminution by gas stream obtains inventing described zinc white composite prod.
Gained zinc white composite prod performance sees the following form:
Embodiment zinc white composite prod compares with common zinc white performance index:
Claims (7)
1. a preparation method for zinc white composite powder, is characterized in that comprising the steps:
A) super-fine anhydrous terra alba and zinc white are uniformly mixed into fine powder mixture by following weight fraction ratio:
Super-fine anhydrous terra alba 5-25 part,
Zinc white 75-95 part;
B) fine powder mixture obtained in step a and dispersion agent and water are joined in agitation vat, magnetic stirring apparatus carries out wet method stirring, mix completely with dispersion agent in the process forming slurries and control the temperature of slurries;
C) grind after adding coupling agent in slurries in stepb, grinding medium is agate again;
D) the mixed serum suction filtration obtained by step c, filter cake is washed, and dries, and cooling is pulverized, to be obtained final product.
2. the preparation method of zinc white composite powder according to claim 1,, it is characterized in that dispersion agent is water glass, the add-on of dispersion agent is the 5-7% of fine powder mixture quality, coupling agent is titanic acid ester and silane coupling agent, and the add-on of coupling agent is the 1.5-3.5% of fine powder mixture quality.
3. the preparation method of zinc white composite powder according to claim 1, is characterized in that grinding whipping temp is 25-50 DEG C.
4. the preparation method of zinc white composite powder according to claim 1, is characterized in that milling time is 60-150min.
5. the preparation method of zinc white composite powder according to claim 1, is characterized in that grinding plant is star lapping machine.
6. the preparation method of zinc white composite powder according to claim 1, it is characterized in that filtration cakes torrefaction temperature is 100 DEG C, grinding mode is comminution by gas stream.
7. the preparation method of zinc white composite powder according to claim 1, is characterized in that product need seal preservation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105331145A (en) * | 2015-11-29 | 2016-02-17 | 贵州开磷集团股份有限公司 | Method for producing packing for PP (Polypropylene) by taking ardealite as raw material |
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| JPH0930935A (en) * | 1995-07-21 | 1997-02-04 | Kao Corp | Composite particle and cosmetic containing the same |
| CN1556154A (en) * | 2004-01-08 | 2004-12-22 | 上海交通大学 | Method of inorganic whisker surface treatment |
| CN101277706A (en) * | 2005-09-29 | 2008-10-01 | 聂洱 | Zinc oxide coated particles, compositions containing the same, and methods for making the same |
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| CN105331145A (en) * | 2015-11-29 | 2016-02-17 | 贵州开磷集团股份有限公司 | Method for producing packing for PP (Polypropylene) by taking ardealite as raw material |
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Application publication date: 20150408 |