CN103992661A - Surface treatment method for composite inorganic pigment - Google Patents
Surface treatment method for composite inorganic pigment Download PDFInfo
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- CN103992661A CN103992661A CN201410252270.1A CN201410252270A CN103992661A CN 103992661 A CN103992661 A CN 103992661A CN 201410252270 A CN201410252270 A CN 201410252270A CN 103992661 A CN103992661 A CN 103992661A
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Abstract
The invention relates to a chemical raw material and a preparation process thereof, and aims to provide a surface modifier for surface treatment of a composite inorganic pigment and a surface modification process thereof to solve the problem that the existing composite inorganic pigment is hardly dispersed in weak-polar or nonpolar matrix resin. The surface modifier is a composite surface modifier; and after the treatment by the composite surface modifier, sufficient and effective mixing of the composite inorganic pigment can be ensured, and the hue, mechanical properties and the like of the finished product are improved.
Description
Technical field
The invention belongs to industrial chemicals preparation field, surface-modifying agent and surface modification technology thereof that more precisely a kind of composite inorganic surface of pigments is processed.
Background technology
Composite inorganic pigment (Complex Inorganic Color Pigments, CICP; Claim again Mixed Metal Oxide, MMO) be a kind of novel mineral dye, because it has high-environmental, high performance advantage, caused in the world great concern recent years.With respect to traditional organic or inorganic pigment, composite inorganic pigment has that thermostability is high, good weatherability, chemical stability are excellent, bright and lustrous, pigment plurality of advantages such as non-migratory in base material.
Utilize the high-weatherability of composite inorganic pigment, be mainly applied to the fields such as car paint, coil coating, powder coating, building coating; Utilize the compound high-environmental type without stool pigment, be mainly applied to the fields such as toy, tableware, food product pack.In addition, some composite inorganic pigment, as black in siderochrome etc., because it has high infrared reflectance in infrared range of spectrum, put on more and more reflective coating, be applied to energy-conservation field of Environment Protections such as " cold roofs ".
Current, the synthetic solid-phase sintering process of mainly taking of composite inorganic pigment.Typical technique comprises the presoma of the oxide compound of different material or oxide compound as metal-salt, oxyhydroxide, carbonate etc., after mixing according to certain proportioning, carry out at a certain temperature sintering, metal ion and the mutual diffusion of oxonium ion phase, the final another kind of crystal phase that forms structure homogeneous, i.e. composite inorganic pigment.
Due to electrodeless pigment self chemical composition and structure, its surface is extremely strong polarity M-O (M: metal ion; O: oxonium ion) combination, while causing using it for the body material (as resin, plastics etc.) of nonpolar or low-pole, even if adopt the equipment such as powerful stirring, grinding, also be difficult to effectively be scattered in body material, thereby affect form and aspect, physical strength, toughness, wear resistance of final material etc.
For addressing the above problem, can adopt and be prepared into Masterbatch, then make an addition to the method in body material.But aforesaid method has not only increased extra operation, and actual effect is still unsatisfactory.Another kind of solution thinking is that pigment is carried out to surface treatment, reaches the object mixing with matrix resin, and this is especially embodied in the surface treatment of inorganic white pigments titanium dioxide, and the titanium dioxide using as pigment in the market generally all passes through surface treatment.But for this emerging high-end coloured pigment of composite inorganic pigment, still lack applicable surface treatment agent.
Summary of the invention
The object of the invention is to be difficult to be scattered in the problem in low-pole or nonpolar matrix resin for existing composite inorganic pigment the surface-modifying agent and the surface modification technology thereof that provide a kind of composite inorganic surface of pigments to process.
The applicant finds, by adopting the compound surface-treating agent providing in the present invention to carry out surface modification to composite inorganic pigment, can realize the effect that compound electrodeless pigment better disperses in low-pole or nonpolar matrix resin.
Compound surface-treating agent is mainly comprised of sorbitan-fatty acid ester and phosphoric acid ester, wherein:
The typical molecular structure of sorbitan-fatty acid ester is:
Wherein, R is the alkyl chain that contains 12-18 carbon, and it derives from sorbitan-fatty acid ester chemical structure, with the lipid acid of Sorbitol Powder formation ester structure, as stearic acid, palmitinic acid, tetradecanoic acid, lauric acid, oleic acid etc.
The typical molecular structure of phosphoric acid ester is:
Wherein, R is the alkyl chain that contains 12-18 carbon, and it derives from phosphoric acid ester chemistry structure, with the lipid acid of phosphoric acid formation ester structure, as stearic acid, palmitinic acid, tetradecanoic acid, lauric acid, oleic acid etc.
The weight percent of sorbitan-fatty acid ester in compound surface-treating agent is 1.0%-99%, and preferential selection is 10%-50%, more preferably 20%-40%.
The weight percent of compound surface-treating agent in composite inorganic pigment is: 0.01%-10%, preferential selection is 0.05%-5%, more preferably 0.1%-2%.
Applicable composite inorganic pigment comprises: copper-chrome black, siderochrome is black, ferrimanganic is black, siderochrome is brown, siderochrome zinc palm fibre, titanium nickel yellow, zinc-iron Huang, titanium manganese brown, cobalt blue, chromium cobalt blue, cobalt titanate green, cobalt green etc.Pigment particle size is 0.01-10 micron, is preferably 0.1-2 micron.
The typical process step of composite inorganic surface of pigments provided by the invention modification is:
1) according to precalculated quantity, weigh a certain amount of compound electrodeless pigment, be placed in suitable solvent (as water), by stirring, wait it is mixed, obtain the slurry of composite inorganic pigment;
2) according to certain adding proportion, in pigment slurry, add compound surface-treating agent, stir, compound surface-treating agent is fully contacted with the surface of composite inorganic pigment;
3) filtration or centrifugal slurry, to remove the most of moisture in slurry;
4) dry slurry, obtains modification composite inorganic pigment powder.
Also can carry out direct surface modification to compound electrodeless pigment dry powder, typical processing step is:
1) composite inorganic pigment is placed in to mixer, as stirrer, slowly stirs material;
2) according to adding proportion, take a certain amount of compound surface-treating agent, be dissolved in solvent (as methyl alcohol), be called " modification liquid ";
3) modification liquid is sprayed on to material surface, continues to stir certain hour, make modification liquid uniform fold in granules of pigments surface;
4) dry slurry, obtains modification composite inorganic pigment powder.
Embodiment
Below in conjunction with specific embodiment, further set forth the features and advantages of the invention.But, should be understood that these embodiment only do not form limitation of the scope of the invention for the present invention is described.The test method of unreceipted actual conditions in the following example, conventionally according to normal condition, or the condition of advising according to manufacturer.
The invention has the advantages that:
For existing composite inorganic pigment, in low-pole or non-polar resin, be difficult to the shortcoming of disperseing, provide a kind of and can effectively reduce composite inorganic surface of pigments polarity, increase compound surface-treating agent and the surface-treated method thereof of composite inorganic colo(u)rant dispersion.
Embodiment 1
1000 grams of copper-chrome blacks are added in 1000 grams of water, under speed 3000RPM, stir 20 minutes, obtain pigment slurry.0.5 gram of sorbitan stearate and 0.5 gram of phosphoric acid ester are added, be placed in strong mixer, under 2000RPM, stir 5 minutes.Filter, at 120 ℃, be dried 12 hours, obtain modification composite inorganic pigment.
Above-mentioned modification composite inorganic pigment is used for according to propylene modified engineered plastic, with carrying out surface-treated composite inorganic pigment, do not compare, polypropylene modification engineering plastics obtain better form and aspect homogeneity and mechanical property, and tinctorial yield has improved twice, and tensile strength on average improves 5%.
Embodiment 2
500 grams of composite inorganic pigment cobalt blues are placed in to mixer, rotating speed 30RPM.0.3 gram of sorbitan stearate and 0.7 gram of phosphoric acid ester sodium are dissolved in methyl alcohol, obtain surface modification liquid, with watering can, surface modification liquid is sprayed onto to cobalt blue powder surface, continue to stir 30 minutes.At 120 ℃, be dried 12 hours, obtain modification composite inorganic pigment.
Above-mentioned modification composite inorganic pigment is used for to polypropylene modification engineering plastics, with not carrying out, surface-treated is compound to be compared without stool pigment, polypropylene modification engineering plastics obtain better form and aspect homogeneity and mechanical property, and tinctorial yield has improved 30%, and tensile strength on average improves 4%.
In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (9)
1. surface-modifying agent and a process of surface treatment thereof of processing for composite inorganic surface of pigments, it is characterized in that this surface-modifying agent is compound surface-treating agent, the composite inorganic pigment of processing through this compound surface-treating agent, can guarantee that pigment mixes fully effectively with polymkeric substance.
2. method according to claim 1, is characterized in that this compound surface-treating agent contains sorbitan-fatty acid ester and phosphoric acid ester.
3. according to the method described in claim 1 and 2, it is characterized in that in sorbitan-fatty acid ester, the lipid acid that participates in formation ester structure is the lipid acid of 12-18 carbon, as stearic acid, palmitinic acid, tetradecanoic acid, lauric acid, oleic acid etc.
4. according to the method described in claim 1 and 2, it is characterized in that in phosphoric acid ester, the lipid acid that participates in formation ester structure is the lipid acid of 12-18 carbon, as stearic acid, palmitinic acid, tetradecanoic acid, lauric acid, oleic acid etc.
5. according to claim 1 and 2, it is characterized in that the weight percent of sorbitan-fatty acid ester in compound surface-treating agent is 1.0%-99%, preferential selection is 10%-50%, more preferably 20%-40%.
6. according to claim 1 and 2, it is characterized in that the weight percent of compound surface-treating agent in composite inorganic pigment is for being 0.01%-10%, preferential selection is 0.05%-5%, more preferably 0.1%-2%.
7. according to claim 1, applicable composite inorganic pigment comprises: copper-chrome black, siderochrome is black, ferrimanganic is black, siderochrome is brown, siderochrome zinc palm fibre, titanium nickel yellow, zinc-iron Huang, titanium manganese brown, cobalt blue, chromium cobalt blue, cobalt titanate green, cobalt green etc.Pigment particle size is 0.01-10 micron, is preferably 0.1-2 micron.
8. method according to claim 1, is characterized in that composite inorganic pigment and compound surface treatment agent to be mixed with mixture, through mixing, carries out surface treatment, adds if desired suitable solvent.
9. method according to claim 1, modification composite inorganic pigment prepared by the present invention have lower surface can, guarantee fully effectively to mix with polymkeric substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410252270.1A CN103992661A (en) | 2014-06-09 | 2014-06-09 | Surface treatment method for composite inorganic pigment |
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| CN201410252270.1A CN103992661A (en) | 2014-06-09 | 2014-06-09 | Surface treatment method for composite inorganic pigment |
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| CN103992661A true CN103992661A (en) | 2014-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752103A (en) * | 2016-12-14 | 2017-05-31 | 广东圆融新材料有限公司 | A kind of preprocess method of blanc fixe |
| CN116023805A (en) * | 2022-12-29 | 2023-04-28 | 淄博颜光颜料有限公司 | High-tinting strength copper-chromium black pigment and preparation process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896148A (en) * | 2005-07-15 | 2007-01-17 | 纳幕尔杜邦公司 | Preparation of pyrolized silicon oxide encapsulated titanium oxide powders treated with organic additives |
| CN103289438A (en) * | 2013-05-23 | 2013-09-11 | 铜陵瑞莱科技有限公司 | Method for preparing oxidation-resisting iron oxide black granules |
| CN103694748A (en) * | 2013-12-17 | 2014-04-02 | 北京北矿锌业有限责任公司 | Surface modification method of metallic pigment |
-
2014
- 2014-06-09 CN CN201410252270.1A patent/CN103992661A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896148A (en) * | 2005-07-15 | 2007-01-17 | 纳幕尔杜邦公司 | Preparation of pyrolized silicon oxide encapsulated titanium oxide powders treated with organic additives |
| CN103289438A (en) * | 2013-05-23 | 2013-09-11 | 铜陵瑞莱科技有限公司 | Method for preparing oxidation-resisting iron oxide black granules |
| CN103694748A (en) * | 2013-12-17 | 2014-04-02 | 北京北矿锌业有限责任公司 | Surface modification method of metallic pigment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752103A (en) * | 2016-12-14 | 2017-05-31 | 广东圆融新材料有限公司 | A kind of preprocess method of blanc fixe |
| CN116023805A (en) * | 2022-12-29 | 2023-04-28 | 淄博颜光颜料有限公司 | High-tinting strength copper-chromium black pigment and preparation process thereof |
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Application publication date: 20140820 |