CN104164098A - Method for modifying heavy calcium carbonate by palm oil - Google Patents
Method for modifying heavy calcium carbonate by palm oil Download PDFInfo
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- CN104164098A CN104164098A CN201410212534.0A CN201410212534A CN104164098A CN 104164098 A CN104164098 A CN 104164098A CN 201410212534 A CN201410212534 A CN 201410212534A CN 104164098 A CN104164098 A CN 104164098A
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- calcium carbonate
- palm oil
- modified calcium
- plam oil
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Abstract
A method for modifying heavy calcium carbonate by palm oil comprises the following steps: adding palm oil or a palm oil and sodium dodecyl sulfate mixture or a palm oil and polyethylene glycol mixture accounting for 0.5-2.5% of the mass of calcium carbonate into a water suspension of heavy calcium carbonate, stirring at 40-90DEG C for 20-60min, carrying out pumping filtration, drying, and grinding to obtain a modified calcium carbonate product. The above palm oil modifier used in the invention is the most productive plant oil and has wide sources. The palm oil contains many types of aliphatic acids, the carboxyl group of the aliphatic acid and calcium carbonate form chemical combination to make the surface of calcium carbonate lipophilic and hydrophobic, and the long chain alkyl group of the modifier has good compatibility with a polymer in order to enhance the interface effect. The method has the advantages of simple modification technology, easy popularization, low cost and no pollution. Modified calcium carbonate can be used for filling plastics, rubbers, adhesives and the like, and has a wide application prospect.
Description
Technical field
Patent of the present invention relates to the surface treatment method of non-metallic minerals, is specifically related to the surface modifying method of water-ground limestone.
Background technology
Calcium carbonate, due to good stability, easily processing, the advantage such as nontoxic, cheap, is widely used in the fields such as coating, plastics, rubber, papermaking, medicine, food, the effect such as play increase-volume, increment, reduce costs.But, calcium carbonate surface hydrophilic oleophobic, poor with organic polymer consistency, directly filling easily causes material mechanical performance to reduce, and its application is restricted.By surface modification, make calcium carbonate surface oleophilic drainage, good with organic polymer consistency, the application that can improve calcium carbonate.Calcium carbonate surface modifying agent kind is a lot, and at present widely used is stearic acid, and modified effect is general.
Summary of the invention
Patent of the present invention relates to a kind of surface modified calcium carbonate product and preparation method thereof.By this modified heavy calcium carbonate of palm wet goods, making it has good consistency with organic polymer, can be used for the packing material of plastics, rubber, sizing agent.
Technical scheme of the present invention:
A kind of surface modified calcium carbonate, its preparation method is: in calcium carbonate, add distilled water to be made into suspension, in whipping process, add properties-correcting agent, the consumption of properties-correcting agent is the 0.5%-2.5% of water-ground limestone quality, under 40 DEG C of-90 DEG C of conditions, stir 20-60min, then carry out obtaining modified calcium carbonate product after suction filtration, oven dry, grinding.
Said calcium carbonate is water-ground limestone.
Said properties-correcting agent is the mixture of plam oil or plam oil and sodium lauryl sulphate or the mixture of plam oil and polyoxyethylene glycol.
Modified calcium carbonate provided by the present invention is prepared by aforesaid method.
Modified calcium carbonate provided by the present invention can be used for the packing material of plastics, rubber, sizing agent.
The principle of the invention: plam oil contains multiple lipid acid, the carboxyl of lipid acid and calcium carbonate form Chemical bond, make calcium carbonate surface become oleophilic drainage, and the chain alkyl of properties-correcting agent and polymkeric substance have good consistency, have strengthened interface interaction.
Superiority of the present invention is that plam oil is the vegetables oil of output maximum in the world, wide material sources, and modified technique is simple, is easy to promote, and cost is lower, pollution-free.Modified calcium carbonate can be used for filled plastics, rubber, sizing agent etc., has a extensive future.
Embodiment
Embodiment 1
In 100g water-ground limestone aqeous suspension, add 1.5g plam oil, under 80 DEG C of conditions, stir 50min, then carry out obtaining modified product after suction filtration, oven dry, grinding, degree of activation is 98.87%, and oil-absorption(number) is 0.19ml/g.
Embodiment 2
Take 100g heavy calcium carbonate powder and be placed in Erlenmeyer flask, add appropriate distilled water to be made into suspension and put into thermostat water bath heating, temperature remains on 70 DEG C, add while stirring sodium lauryl sulphate 0.75g, after two minutes, add again 1.75g plam oil, after 40min, with vacuum pump suction filtration while hot, dry, grind, obtain modified product.
Embodiment 3
Take 100g coarse whiting powder and be placed in there-necked flask, add distilled water to be made into suspension and put into thermostat water bath, add while stirring 1.5g plam oil and 1.0g polyoxyethylene glycol, control temperature at 70 DEG C, after 40min, use while hot vacuum pump suction filtration, dry, grind, obtain modified product.
Its degree of activation is 96.8%, and oil-absorption(number) is 0.20ml/g.
The modified effect of table 1 properties-correcting agent
Unmodified water-ground limestone surface hydrophilic oleophobic, its degree of activation is 0, the degree of activation of modified heavy calcium carbonate is more than 98%, the oil-absorption(number) of modified heavy calcium carbonate, viscosity number, settling volume are all decreased significantly than unmodified water-ground limestone, the surface properties that modified heavy calcium carbonate is described changes, and is oleophilic drainage; And the degree of activation of stearic acid modified calcium carbonate product is 95%, oil-absorption(number), viscosity number, settling volume are but greater than plam oil modified calcium carbonate product, illustrate that plam oil modified effect is better than stearic acid.
Claims (6)
1. a surface modified calcium carbonate product, it is characterized in that adding plam oil as properties-correcting agent in calcium carbonate, the consumption of properties-correcting agent is the 0.5%-2.5% of calcium carbonate quality, under 40 DEG C of-90 DEG C of conditions, stirs 20-60min, then carries out obtaining modified calcium carbonate product after suction filtration, oven dry, grinding.
2. the preparation method of modified calcium carbonate according to claim 1, is characterized in that, described calcium carbonate is water-ground limestone.
3. the preparation method of modified calcium carbonate according to claim 1, is characterized in that, described properties-correcting agent is the mixture of plam oil or plam oil and sodium lauryl sulphate or the mixture of plam oil and polyoxyethylene glycol.
4. the preparation method of modified calcium carbonate according to claim 1, is characterized in that, described properties-correcting agent plam oil is 7: 3 with the mixing quality ratio of sodium lauryl sulphate; Plam oil is 5: 3 with the mixing quality ratio of polyoxyethylene glycol.
5. a surface modified calcium carbonate prepared by the method as described in claim 1-3 any one.
6. surface modified calcium carbonate as claimed in claim 5 is applied to the packing material of plastics, rubber, sizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410212534.0A CN104164098A (en) | 2014-05-12 | 2014-05-12 | Method for modifying heavy calcium carbonate by palm oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410212534.0A CN104164098A (en) | 2014-05-12 | 2014-05-12 | Method for modifying heavy calcium carbonate by palm oil |
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| CN104164098A true CN104164098A (en) | 2014-11-26 |
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| CN201410212534.0A Pending CN104164098A (en) | 2014-05-12 | 2014-05-12 | Method for modifying heavy calcium carbonate by palm oil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153752A (en) * | 2015-07-02 | 2015-12-16 | 池州青阳县龙酉钙业有限公司 | Easily dispersable and nonsettleable modified calcium carbonate and preparation method thereof |
| CN106397838A (en) * | 2016-09-29 | 2017-02-15 | 贺州钟山县双文碳酸钙新材料有限公司 | Modified calcium carbonate for cables |
| CN106496638A (en) * | 2016-09-29 | 2017-03-15 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of plastics modified calcium carbonate |
| CN106496637A (en) * | 2016-09-29 | 2017-03-15 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of rubber modified calcium carbonate |
| CN108276705A (en) * | 2018-02-26 | 2018-07-13 | 杭州乐守科技有限公司 | A kind of corrosion-resistant PVC profile and preparation method thereof |
| CN109266161A (en) * | 2018-07-17 | 2019-01-25 | 安徽江淮车轮有限公司 | A kind of wheel antifouling paint |
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| CN1477147A (en) * | 2002-08-20 | 2004-02-25 | ���Ⱥ;� | Synthesis of oily chemical product with multifunctional group, its product and its application |
| CN101570342A (en) * | 2009-06-11 | 2009-11-04 | 福建省万旗非金属材料有限公司 | Method for preparing high-whiteness nanometer calcium carbonate special for silicone sealant by utilizing low-grade limestone by wet method |
| CN101671494A (en) * | 2009-09-19 | 2010-03-17 | 张家界恒亮新材料科技有限公司 | Surface modified calcium carbonate and preparation method thereof |
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2014
- 2014-05-12 CN CN201410212534.0A patent/CN104164098A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1477147A (en) * | 2002-08-20 | 2004-02-25 | ���Ⱥ;� | Synthesis of oily chemical product with multifunctional group, its product and its application |
| CN101570342A (en) * | 2009-06-11 | 2009-11-04 | 福建省万旗非金属材料有限公司 | Method for preparing high-whiteness nanometer calcium carbonate special for silicone sealant by utilizing low-grade limestone by wet method |
| CN101671494A (en) * | 2009-09-19 | 2010-03-17 | 张家界恒亮新材料科技有限公司 | Surface modified calcium carbonate and preparation method thereof |
Non-Patent Citations (1)
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| 郑永林 等: "《粉体表面改性 第3版》", 30 September 2011, 北京：中国建材工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153752A (en) * | 2015-07-02 | 2015-12-16 | 池州青阳县龙酉钙业有限公司 | Easily dispersable and nonsettleable modified calcium carbonate and preparation method thereof |
| CN106397838A (en) * | 2016-09-29 | 2017-02-15 | 贺州钟山县双文碳酸钙新材料有限公司 | Modified calcium carbonate for cables |
| CN106496638A (en) * | 2016-09-29 | 2017-03-15 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of plastics modified calcium carbonate |
| CN106496637A (en) * | 2016-09-29 | 2017-03-15 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of rubber modified calcium carbonate |
| CN108276705A (en) * | 2018-02-26 | 2018-07-13 | 杭州乐守科技有限公司 | A kind of corrosion-resistant PVC profile and preparation method thereof |
| CN109266161A (en) * | 2018-07-17 | 2019-01-25 | 安徽江淮车轮有限公司 | A kind of wheel antifouling paint |
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Application publication date: 20141126 |