CN103666010A - Organic compound thickening agent for coating - Google Patents
Organic compound thickening agent for coating Download PDFInfo
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- CN103666010A CN103666010A CN201310569288.XA CN201310569288A CN103666010A CN 103666010 A CN103666010 A CN 103666010A CN 201310569288 A CN201310569288 A CN 201310569288A CN 103666010 A CN103666010 A CN 103666010A
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Abstract
The invention discloses an organic compound thickening agent for a coating, belonging to the technical field of thickening agents for coatings. The organic compound thickening agent comprises the following components in parts by weight: 5-7 parts of attapulgite, 2-3 parts of calcium bentonite and 1-2 parts of silicon dioxide and is prepared by mixing and stirring the components and bagging the product. Compared with the prior art, the thickening agent is simple in preparation process and convenient to use, is low in cost, can play a role in dispersing, thickening and levelling after being added to the coating, has good fluidity, and can effectively overcome the defects existing when bentonite or attapulgite is independently used.
Description
Technical field
The invention belongs to coating thickener technical field, be specifically related to a kind of coating organic composite thickening material.
Background technology
In coating industry, for improving the performance of some Drawing abillity and the finished product, often in material, add some functional aids.Coatings additive(s) is considered to a class important composition material of coating products, it is dispersed in material, material structure is not caused to obvious impact, but can improvement of production process, improve product performance, improve coating application performance, reduce the pollution to environment, and contribute to the specific function of development of new coating, release various functional coatings.
Thickening material is the important paint additive of a class.In coating, add thickening material can make coating thickening, obtain excellent machinery and physical and chemical stability, and in coating application, play the effect of controlling rheological.Available thickening material kind is a lot of in the market, mainly contains mineral-type, fiber-like, polyacrylic and association type polyurethanes thickening material four classes.Inorganic thickening agent is a class water-swelling and form thixotropic gel mineral, and it has good suspension and dispersiveness, can discharge charged corpuscle in water, increases system viscosity.The use history of cellulose thickener is long, kind is a lot, have methylcellulose gum, Walocel MT 20.000PV, Natvosol etc., it is widely used, but exists levelling property poor, during roller coat, splash phenomena is more, stability is bad, is subject to the shortcomings such as microbiological deterioration.Agent for polyacrylic acid thickening has stronger thickening property and good levelling property, and biologically stable is good, but not good to pH value sensitivity, water tolerance.Association type polyurethanes thickening material has many performances to be better than other thickening material, but due to its unique micelle thickening mechanism, the component that is easily affected micella in formulation for coating material impacts, and therefore, its application in paint field is narrower.
Inorganic thickening agent has good physicochemical property, and particularly composite environmental-friendly requirement, along with the raising of society to environmental requirement, believes that the inorganic thickening of a large amount of uses is by the direction that is paint development.
Chinese patent (application number: 201010549372.1) disclose a kind of thickener for coating, it includes the component of following weight fraction: silica 1 0-15 part, organobentonite 5-10 part, two Bian fork Sorbitol Powder 20-30 parts.The coating thickener that this invention provides, overcomes the unsettled defect of gel structure while using metallic soap, and benzylidene sorbitol is combined use with organobentonite, silicon-dioxide, has improved the solubleness of benzylidene sorbitol.This thickening material coordinates coating to use, and by secondary valence bond, connects into reticulated structure, thereby makes the thickening of coating appropriateness.But this thickening material is in inventor's actual application, still fail to solve well that coating exists in storage, transportation, use procedure is settlement separate, the problem such as drying property, levelling property and sagging.
Chinese patent (application number: 200610040450.9) disclose a kind of coating thickener prepared by attapulgite and preparation method thereof that utilizes, the method be take attapulgite washed ore as raw material, by water and additive MgO soak, be rolled into wet feed, dry and milling process is made attapulgite gelatin, this attapulgite gelatin has high viscosity coefficient and high thixotropy index, while being used for the thickening material of water-based or solvent based coating, it can be well-dispersed in water or other solvent, and does not occur reuniting.In water-based system application, attapulgite does not expand, and after being scattered in water, forms network between particle, water is wrapped up wherein and its thickening power, and in actual use, often need to combine use with other thickening material, and use range is narrow separately.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of being applied in coating, has fine thickening, dispersion, levelling effect and the simple coating of high viscosity, high thixotropic and complete processing organic composite thickening material.
The object of the present invention is achieved like this: it comprises the component of following weight part: attapulgite 5-7 part, calcium-base bentonite 2-3 part, silica 1-2 part.
Described silicon-dioxide is thermal silica.
Attapulgite be a kind of tool chain laminate structure containing Shuifu County's magnesium silicate clay mineral, it is a kind of conventional thickening material, it can have thixotroping thickening power to the water-based of coating, tackiness agent, ink, sealing agent or other liquid products and solvent-borne formulation, can reduce pigment and other material sagging, prevent deposition.
Wilkinite is an expansion type clay, and its essential mineral composition is montmorillonite.Wilkinite has application to a certain degree in coating material production as inorganic thickening agent, its characteristic is that thickening effectiveness and suspension are remarkable, can make coating produce thixotropy, is convenient to store and construction.Its mechanism of action is: wilkinite has strong absorptive, water that can 5 times of left and right of the quality of absorption own, after absorption, volume increases, inflatable to original volume several times to tens times, and form spawn and wrap the color stuffing particle in coating, prevent particles settling; In addition between montmorillonite layer in the adsorbable coating of negative charge in the contained organic molecule of organic additive (as polyvinyl alcohol, vinylformic acid, Natvosol etc.)-OH ,-COOH ,-CH
2cH
2oH isopolarity group, makes between one end interposed layer of polar group, forms montmorillonite-organic double compound, and montmorillonite-organic double compound is cross-linked with each other, and forms net vertical body structure, improves the suspension of coating.Wilkinite after organically-modified has good dispersiveness in solvent based coating, its sheet edge is adsorbing the long-chain organism of oleophylic and is having good affinity with coating, the oxygen and the hydrogen-oxygen group that distribute wherein can form the hydrogen bond with result of prevention simultaneously, make coating become uniform jelly and there is certain viscosity, and then play the effect that stops pigment sedimentation; When stirring under extraneous shearing force exists, hydrogen bond is destroyed, and viscosity weakens, and coating has again mobility.But because wilkinite has good light absorptive, can obviously reduce film coated surface gloss, play the effect of similar matting agent, while therefore using wilkinite, will control consumption.
Thermal silica claims again aerosil, it is a kind of meticulous, the special indefiniteness split material that utilizes chlorosilane to make through hydrogen flame high temperature vapor phase hydrolysis, have that particle diameter is little, specific surface area is large, surfactivity is high and purity high, usually in liquid system as thickening material and thixotropic agent, there is anti-precipitation, the extension effect of releasing, can improve suspension and dispersiveness in coating system.
Above cost of material is cheap, and production and reclaiming process are simple, nontoxic pollution-free, and the utmost point is suitable for being used as the interpolation auxiliary agent with effects such as thickening, dispersion, levellings in paint field.
Compared with prior art, the present invention has the following advantages and positively effect: the present invention adopts attapulgite, wilkinite, silicon-dioxide to mix the compound organic thickening agent of composite preparation, this thickening material is used effects such as can playing better thickening, dispersion, levelling in coating, and has good mobility, viscosity and thixotropy; And preparation technology is simple, to add easy to usely, cost of manufacture is low, is beneficial to and applies.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail; the present embodiment is only that the present invention is done to clearer explanation; rather than limitation of the present invention; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Following implementation column raw materials is all bought from the market.
Embodiment 1
Take 6kg attapulgite, 3kg calcium-base bentonite, 1kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Embodiment 2
Take 7kg attapulgite, 2.5kg calcium-base bentonite, 1.5kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Embodiment 3
Take 7kg attapulgite, 2kg calcium-base bentonite, 1kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Embodiment 4
Take 5kg attapulgite, 3kg calcium-base bentonite, 2kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Embodiment 5
Take 5kg attapulgite, 3.5kg calcium-base bentonite, 1.5kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Embodiment 6
Take 6kg attapulgite, 2.5kg calcium-base bentonite, 1.5kg silicon-dioxide, mix, stir, pack.During use, by the 3-8% of coating quality, add, just can reach good effect.
Claims (2)
1. a coating organic composite thickening material, is characterized in that comprising the component of following weight part: attapulgite 5-7 part, calcium-base bentonite 2-3 part, silica 1-2 part.
2. coating according to claim 1 organic composite thickening material, is characterized in that, described silicon-dioxide is thermal silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569288.XA CN103666010A (en) | 2013-11-13 | 2013-11-13 | Organic compound thickening agent for coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569288.XA CN103666010A (en) | 2013-11-13 | 2013-11-13 | Organic compound thickening agent for coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103666010A true CN103666010A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310569288.XA Pending CN103666010A (en) | 2013-11-13 | 2013-11-13 | Organic compound thickening agent for coating |
Country Status (1)
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| CN (1) | CN103666010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566987A (en) * | 2016-01-18 | 2016-05-11 | 明光市飞洲新材料有限公司 | Nano-crystal-whisker sink-preventing thickening agent for water-based paint and preparing method thereof |
| CN107470552A (en) * | 2017-08-28 | 2017-12-15 | 安徽省含山县潮林铸管厂（普通合伙） | A kind of preparation method of centrifugal casting coating |
-
2013
- 2013-11-13 CN CN201310569288.XA patent/CN103666010A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566987A (en) * | 2016-01-18 | 2016-05-11 | 明光市飞洲新材料有限公司 | Nano-crystal-whisker sink-preventing thickening agent for water-based paint and preparing method thereof |
| CN107470552A (en) * | 2017-08-28 | 2017-12-15 | 安徽省含山县潮林铸管厂（普通合伙） | A kind of preparation method of centrifugal casting coating |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |