CN105153752A - Easily dispersable and nonsettleable modified calcium carbonate and preparation method thereof - Google Patents
Easily dispersable and nonsettleable modified calcium carbonate and preparation method thereof Download PDFInfo
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- CN105153752A CN105153752A CN201510378564.3A CN201510378564A CN105153752A CN 105153752 A CN105153752 A CN 105153752A CN 201510378564 A CN201510378564 A CN 201510378564A CN 105153752 A CN105153752 A CN 105153752A
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Abstract
The invention discloses an easily dispersable and nonsettleable modified calcium carbonate and a preparation method thereof. The modified calcium carbonate is characterized by being prepared from the following raw materials by weight part: 100-150 of calcium carbonate, 30-50 of sodium oleate, 0.3-0.7 of sodium dodecyl benzene sulfonate, 1-3 of sodium bicarbonate, 4-8 of styrene, 0.02-0.05 of potassium persulfate, 3-5 of fumed silica, 2-3 of organic bentonite, 1-2 of disproportionated potassium rosinate, 3-5 of palm oil, 2-3 of talcum powder, and a proper amount of deionized water. The disproportionated potassium rosinate, palm oil and talcum powder added in the invention enhance the corrosion resistance and mechanical properties of calcium carbonate, the process is safe and environment friendly, energy-saving and cost-reducing. The preparation method is simple, and is worthy of promotion.
Description
Technical field
The present invention relates to industrial filler field, particularly the modified calcium carbonate and preparation method thereof of a kind of easy dispersion not free settling.
Background technology
Calcium carbonate is as rubber, the filler of plastics, the thermotolerance of goods can be improved, wear resistance, dimensional stability, rigidity and workability, and reduce the cost of goods, but the hydroxyl that its surface has wetting ability stronger, present stronger alkalescence, the affinity of the calcium carbonate that this hydrophilic thin oil properties makes and organic polymer is poor, easy formation aggregate, part in superpolymer is caused to disperse uneven, thus cause boundary defect between bi-material, direct effect is bad, and calcium carbonate is as filler, its acid resistance, slickness, the performances such as whiteness need further raising, therefore, in order to improve the physicals of the strengthening action of calcium carbonate and dispersing property in the composite and modified calcium carbonate filled composite materials, be necessary to adopt different surface-modifying agents and treatment process to carry out surface modification to calcium carbonate powders, and then widen the Application Areas of calcium carbonate.
Polymer/inorganic particle matrix material is a kind of type material, which overcome simple inorganic particulate not easily to process, organic polymer intensity is lower, the shortcomings such as less stable, under synergistic effect, can obtain upgrading than inorganic particulate and organic polymer, more excellent performance, improve the stability of composite prod and the dispersiveness in organic phase, the performances such as physical strength, the present invention adopts polymer overmold modified calcium carbonate, solve the hydrophilic oleophobic of carbonic acid carbon, dispersed bad, free settling, physical strength is not high, the problems such as enhancement cannot be reached with polymer compatibility difference, improve the range of application of calcium carbonate.
Summary of the invention
The object of this invention is to provide the modified calcium carbonate and preparation method thereof of a kind of easy dispersion not free settling.In order to realize object of the present invention, the present invention is by following scheme implementation:
The modified calcium carbonate and preparation method thereof of a kind of easy dispersion not free settling, is made up of the raw material of following weight part: calcium carbonate 100-150, sodium oleate 30-50, Sodium dodecylbenzene sulfonate 0.3-0.7, sodium bicarbonate 1-3, vinylbenzene 4-8, Potassium Persulphate 0.02-0.05, aerosil 3-5, organobentonite 2-3, nilox resin acid potassium 1-2, plam oil 3-5, talcum powder 2-3, deionized water are appropriate;
The modified calcium carbonate and preparation method thereof of a kind of easy dispersion of the present invention not free settling, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 4-6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) the methanol solution activation 0.5h of 3-5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2-3h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature is to 80-100 ° of C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40-60 ° of C, then the product adding step (3) gained is under the rotating speed of 1300-1500 rev/min, stirs 8-10min, naturally cool to room temperature after insulation 10-15min, grind to form nanometer powdery.
Advantage of the present invention is: the present invention's sodium oleate makes calcium carbonate surface organise as properties-correcting agent, calcium carbonate particles surface is made to have certain hydrophobicity, and double bond is introduced calcium carbonate surface, using modified calcium carbonate particle as seed, the method of letex polymerization has prepared polystyrene coated caco3 composite particles, enhance the consistency of calcium carbonate and polymkeric substance, and easily disperse, not easily reunite, physical strength is high, the present invention is also by aerosil and organobentonite activation aftertreatment modified calcium carbonate, silicon-dioxide is made to stick to the surface of calcium carbonate, not free settling, be uniformly dispersed, suspension stability is good, and further enhancing the oilness of calcium carbonate, water tolerance and high thermal resistance, calcium carbonate is had a wide range of applications in the industry, the nilox resin acid potassium added, plam oil, talcum powder enhances the corrosion-resistant of calcium carbonate, mechanical property, safety and environmental protection in technique, energy-saving and cost-reducing, preparation method is simple, be worthy to be popularized.
Specific embodiments
Below by specific examples, the present invention is described in detail.
The modified calcium carbonate and preparation method thereof of a kind of easy dispersion not free settling, is made up of the raw material of following weight part (kilogram): calcium carbonate 150, sodium oleate 46, Sodium dodecylbenzene sulfonate 0.5, sodium bicarbonate 2, vinylbenzene 6, Potassium Persulphate 0.04, aerosil 4, organobentonite 3, nilox resin acid potassium 1, plam oil 4, talcum powder 3, deionized water are appropriate;
The modified calcium carbonate and preparation method thereof of a kind of easy dispersion of the present invention not free settling, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 400 orders for subsequent use;
(3) the methanol solution activation 0.5h of 5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature to 100 ° C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40 ° of C, then the product adding step (3) gained is under the rotating speed of 1500 revs/min, stirs 8min, naturally cool to room temperature after insulation 10min, grind to form nanometer powdery.
The modified calcium carbonate produce the present invention and unmodified calcium carbonate performance compare, obtain modified calcium carbonate and reduce 55.5% than unmodified calcium carbonate oil-absorption(number), settling volume reduces 63.7%, viscosity reduces 58.7%, and tap density reduces 18.7%, and modified calcium carbonate oleophilic drainage is described, good with polymer compatibility, and tap density diminishes, illustrate that calcium carbonate dispersing property is good, not easily reunite.
Claims (2)
1. one kind is easily disperseed modified calcium carbonate of not free settling and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: calcium carbonate 100-150, sodium oleate 30-50, Sodium dodecylbenzene sulfonate 0.3-0.7, sodium bicarbonate 1-3, vinylbenzene 4-8, Potassium Persulphate 0.02-0.05, aerosil 3-5, organobentonite 2-3, nilox resin acid potassium 1-2, plam oil 3-5, talcum powder 2-3, deionized water are appropriate.
2. the modified calcium carbonate and preparation method thereof of a kind of easy dispersion not free settling according to claim 1, is characterized in that, be made up of following concrete steps:
(1) sodium oleate is added the aqueous solution sodium oleate that deionized water dissolving makes 1%, electric stirring 10min raised temperature to 60 ° C, add calcium carbonate and stir 1.5h, stirred suction filtration after rear standing 4-6h, with deionized water wash, dry for standby under 80 ° of C in an oven;
(2) modified calcium carbonate obtained for step (1) is added in the four-necked bottle with driven stirring rod and reflux condensing tube, adding appropriate water stirring makes modified calcium carbonate become slurries, stirring is stopped to add Sodium dodecylbenzene sulfonate and sodium bicarbonate, vinylbenzene is added after stirring 0.5h in a nitrogen atmosphere, persulfate aqueous solution is dripped after mixture being warming up to 80 ° of C, constant temperature is centrifugal after keeping 80 ° of C8h, with dry under 80 ° of C in an oven after deionized water rinsing, after to be ground into 300-400 order for subsequent use;
(3) the methanol solution activation 0.5h of 3-5 times amount is added after organobentonite and aerosil being mixed, 5 μm are less than to particle diameter again at grinding machine for grinding 2-3h, add deionized water ultrasonic disperse more even, transfer in flask the product adding step (2) gained again, raised temperature is to 80-100 ° of C, the ultrasonic methyl alcohol that is back to volatilizees, and dries product;
(4) by remaining mixing of materials, stir when being heated to 40-60 ° of C, then the product adding step (3) gained is under the rotating speed of 1300-1500 rev/min, stirs 8-10min, naturally cool to room temperature after insulation 10-15min, grind to form nanometer powdery.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112961719A (en) * | 2021-02-02 | 2021-06-15 | 蒲红 | Metal welding and cutting gas and preparation method thereof |
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| CN104031419A (en) * | 2014-05-20 | 2014-09-10 | 凤台县精华助剂有限公司 | High-density modified calcium carbonate and preparation method thereof |
| CN104059392A (en) * | 2014-05-27 | 2014-09-24 | 池州凯尔特纳米科技有限公司 | Porous material modified calcium carbonate and preparation method thereof |
| CN104087024A (en) * | 2014-06-06 | 2014-10-08 | 凤台县精华助剂有限公司 | Modified calcium carbonate with antibacterial and antioxidation effects and preparing method thereof |
| CN104164098A (en) * | 2014-05-12 | 2014-11-26 | 贺州学院 | Method for modifying heavy calcium carbonate by palm oil |
| CN104194048A (en) * | 2014-07-29 | 2014-12-10 | 青阳县永诚钙业有限责任公司 | Antibacterial and ozone-resistant modified calcium carbonate and preparation method thereof |
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- 2015-07-02 CN CN201510378564.3A patent/CN105153752A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164098A (en) * | 2014-05-12 | 2014-11-26 | 贺州学院 | Method for modifying heavy calcium carbonate by palm oil |
| CN104031417A (en) * | 2014-05-20 | 2014-09-10 | 凤台精兴生物科技有限公司 | Modified calcium carbonate with heat-isolating heat-insulating effect and preparation method thereof |
| CN104031419A (en) * | 2014-05-20 | 2014-09-10 | 凤台县精华助剂有限公司 | High-density modified calcium carbonate and preparation method thereof |
| CN104059392A (en) * | 2014-05-27 | 2014-09-24 | 池州凯尔特纳米科技有限公司 | Porous material modified calcium carbonate and preparation method thereof |
| CN104087024A (en) * | 2014-06-06 | 2014-10-08 | 凤台县精华助剂有限公司 | Modified calcium carbonate with antibacterial and antioxidation effects and preparing method thereof |
| CN104194048A (en) * | 2014-07-29 | 2014-12-10 | 青阳县永诚钙业有限责任公司 | Antibacterial and ozone-resistant modified calcium carbonate and preparation method thereof |
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| 盛野: "《中国博士学位论文全文数据库(电子期刊)》", 《中国博士学位论文全文数据库(电子期刊)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112961719A (en) * | 2021-02-02 | 2021-06-15 | 蒲红 | Metal welding and cutting gas and preparation method thereof |
| CN112961719B (en) * | 2021-02-02 | 2022-03-25 | 蒲红 | Metal welding and cutting gas and preparation method thereof |
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