CN1247710C - Method for preparing modified calcined superfine kaoline filler - Google Patents
Method for preparing modified calcined superfine kaoline filler Download PDFInfo
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- CN1247710C CN1247710C CN 03151290 CN03151290A CN1247710C CN 1247710 C CN1247710 C CN 1247710C CN 03151290 CN03151290 CN 03151290 CN 03151290 A CN03151290 A CN 03151290A CN 1247710 C CN1247710 C CN 1247710C
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- kaolin
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Abstract
The present invention relates to a method for preparing modified and calcinated ultra-fine kaoline filling material, which belongs to the technical field of the preparation of inorganic material. Ultra-fine sheet layer kaoline or ultra-fine kaoline is used as raw material to prepare the modified and calcinated ultra-fine kaoline filling material by low temperature calcination and organic modification technology. The modified and calcinated ultra-fine kaoline filling material has the advantages of simple technology, simple preparation, low calcining temperature, good product performance, etc. The modified and calcinated ultra-fine kaoline filling material prepared by the method is particularly suitable for being used as the filling material of PVC electric wires and cables and has the characteristic of excellent electrical insulation performance. In addition, a filling amount is great, and the modified and calcinated ultra-fine kaoline filling material is helpful for further reducing the cost of PVC electric wires and cables.
Description
Technical field
The present invention relates to a kind of preparation method of modification calcining ultrafine kaolin stopping composition, belong to the preparing technical field of inorganic materials.
Background technology
Kaolin is a kind of very important non-metallic minerals, and along with development of science and technology, its application is increasingly extensive.Be mainly used in industries such as papermaking, plastics, rubber, pottery, pigment, building materials.By peeling off or ball-milling technology can improve the productive rate and the overall economic efficiency of ultrafine kaolin.Proposed a kind of preparation method of ultrafine kaolin sheet layer material in the patent 03115823.4, this method is processed kaolin by stripping technology, can the good ultrafine piece layer kaolin of processability.In addition, kaolin is processed, also can be made ultrafine kaolin, but its kaolin laminated structure is destroyed by ball-milling technology.
Calcined kaolin is a kind of very important kaolin deep processed product, has better shrinkability, intensity, flame retardant resistance, water absorbability and resistivity than general kaolin filler, is mainly used in aspects such as papermaking, plastics, coating, rubber.Modified calcinated kaolin is specially adapted to do the stopping composition of wire cable material.Chen Fengcai mentions the requirement of electric wire to calcined kaolin at " nonmetalliferous ore " in 2001,24 (2) the 8th～10 pages of " China's Calcined Kaolin from Coal Bearing Strata production status and market outlook " literary compositions, and the volume specific resistance of wire cable material first grade is 〉=2.0 * 10
12Ω m.In China, up to the present, preparation technique of calcination kaoline is still not really ripe, still be in grope, the exploratory stage.Calcined kaolin products is of less types, also has very big deficiency on performance.For example, contain the PVC wire cable material of 6.4%wt modification calcining ultrafine kaolin DB-1, its volume specific resistance is 1.32 * 10
12Ω m; Contain the PVC wire cable material of 12.0%wt modification calcining ultrafine kaolin DB-1, its volume specific resistance is 1.65 * 10
12Ω m; The volume specific resistance of certain commodity CABLE MATERIALS is 1.10 * 10
12Ω m.More than the volume specific resistance of three kinds of wire cable materials all do not reach the index of first grade.
Summary of the invention
The objective of the invention is to propose a kind of preparation method of modification calcining ultrafine kaolin stopping composition, this method has easy to prepare; Calcining temperature is lower; The product electrical property is good, is suitable for doing the advantage of the stopping composition of wire cable material.Technical scheme of the present invention is to be raw material with ultrafine piece layer kaolin or ultrafine kaolin, it is characterized in that, by low temperature calcination and organically-modified technology, makes modification calcining ultrafine kaolin stopping composition.
Now describe technical scheme of the present invention in detail.A kind of preparation method of modification calcining ultrafine kaolin stopping composition is a raw material with ultrafine piece layer kaolin or ultrafine kaolin, and the concrete operations step is as follows:
The first step low temperature calcination
The raw material of 120 weight parts in 600～750 ℃ of calcining 1～3h, is naturally cooled to room temperature, the calcined kaolin of 100 weight parts;
Second step is organically-modified
The cetyl trimethylammonium bromide of 0.1 weight part is dissolved in 70～80 ℃ the water of 1000 weight parts, the kaolin that to go up the step processing again is put in the water, stir into uniform mud, the aluminium titanic acid ester that adds 2～5 weight parts again in this mud, keep 80～90 ℃, stir 1～2h, naturally cooling;
The 3rd step finished product
The mud that the last step handles is through centrifugation, and water cleans the centrifugal kaolin that obtains, to can not checking Br
-Ion in 100 ℃ of drying 8～12h, grinds clean kaolin, gets the product of 102～105 weight parts, modification calcining ultrafine kaolin stopping composition.
A kind of preparation method of modification calcining ultrafine kaolin stopping composition is a raw material with ultrafine piece layer kaolin or ultrafine kaolin, it is characterized in that, by low temperature calcination and dry modification process, makes modification calcining ultrafine kaolin stopping composition, and the concrete operations step is as follows:
The first step low temperature calcination
The raw material of 120 weight parts in 600～750 ℃ of calcining 1～3h, is naturally cooled to 120 ℃;
The second step dry method modification
Add the aluminium titanic acid ester of 1～3 weight part in the raw material of handling in last step, stir, keeps 120 ℃, the 30min discharging, the product of 101～103 weight parts, the ultrafine kaolin stopping composition is calcined in modification.
The present invention has the following advantages:
1, technology is simple, and is easy to prepare;
2, calcining temperature is low;
3, the product electrical property is good.
Embodiment
All embodiment operate according to above-mentioned preparation method's operation steps fully:
Embodiment 1
The first step is calcined 3h with the 120g raw material in 600 ℃;
Second step added the aluminium titanic acid ester of 2g in the mud, kept 90 ℃, stirring 2h;
The 3rd go on foot the 102g product, modification calcining ultrafine kaolin stopping composition.
Embodiment 1 product application: add the above-mentioned stopping composition of 6.4%wt in the PVC wire cable material after, the volume specific resistance of this wire cable material is 3.18 * 10
12Ω m has surpassed the requirement of first grade.
Embodiment 2
The first step is calcined 2h with the 120g raw material in 680 ℃;
Second step added the aluminium titanic acid ester of 3.5g in the mud, kept 85 ℃, stirring 1.5h;
The 3rd go on foot the 103.5g product, modification calcining ultrafine kaolin stopping composition.
Embodiment 2 product application: add the above-mentioned stopping composition of 12.0%wt in the PVC wire cable material after, the volume specific resistance of this wire cable material is 3.10 * 10
12Ω m has surpassed the requirement of first grade.
Embodiment 3
The first step is calcined 1h with the 120g raw material in 750 ℃;
Second step added the aluminium titanic acid ester of 5g in the mud, kept 80 ℃, stirring 1h;
The 3rd go on foot the 105g product, modification calcining ultrafine kaolin stopping composition.
Embodiment 3 product application: add the above-mentioned stopping composition of 17.0%wt in the PVC wire cable material after, the volume specific resistance of this wire cable material is 2.10 * 10
12Ω m has surpassed the requirement of first grade.
Embodiment 4
The first step in 600 ℃ of calcining 3h, is cooled to 120 ℃ with the 120g raw material;
The second step dry method modification in the last aluminium titanic acid ester that adds 1g in the raw material of handling that goes on foot, gets the product of 101g, modification calcining ultrafine kaolin stopping composition.
Embodiment 5
The first step in 680 ℃ of calcining 2h, is cooled to 120 ℃ with the 120g raw material;
The second step dry method modification in the last aluminium titanic acid ester that adds 2g in the raw material of handling that goes on foot, gets the product of 102g, modification calcining ultrafine kaolin stopping composition.
Embodiment 6
The first step in 750 ℃ of calcining 1h, is cooled to 120 ℃ with the 120g raw material;
The second step dry method modification in the last aluminium titanic acid ester that adds 3g in the raw material of handling that goes on foot, gets the product of 103g, modification calcining ultrafine kaolin stopping composition.
Claims (2)
1, a kind of preparation method of modification calcining ultrafine kaolin stopping composition, with ultrafine piece layer kaolin or ultrafine kaolin is raw material, it is characterized in that, by low temperature calcination and organically-modified technology, make modification calcining ultrafine kaolin stopping composition, the concrete operations step is as follows:
The first step low temperature calcination
The raw material of 120 weight parts in 600～750 ℃ of calcining 1～3h, is naturally cooled to room temperature;
Second step is organically-modified
The cetyl trimethylammonium bromide of 0.1 weight part is dissolved in 70～80 ℃ the water of 1000 weight parts, the kaolin that to go up the step processing again is put in the water, stir into uniform mud, the aluminium titanic acid ester that adds 2～5 weight parts again in this mud, keep 80～90 ℃, stir 1～2h, naturally cooling;
The 3rd step finished product
The mud that the last step handles is through centrifugation, and water cleans to can not checking Br
-Ion, the kaolin that separation obtains grinds in 100 ℃ of drying 8～12h, gets the product of 102～105 weight parts, modification calcining ultrafine kaolin stopping composition.
2, a kind of preparation method of modification calcining ultrafine kaolin stopping composition, with ultrafine piece layer kaolin or ultrafine kaolin is raw material, it is characterized in that, by low temperature calcination and dry modification process, make modification calcining ultrafine kaolin stopping composition, the concrete operations step is as follows:
The first step low temperature calcination
The raw material of 120 weight parts in 600～750 ℃ of calcining 1～3h, is naturally cooled to 120 ℃:
The second step dry method modification
Add the aluminium titanic acid ester of 1～3 weight part in the raw material of handling in last step, stir, keeps 120 ℃, the 30min discharging, the product of 101～103 weight parts, the ultrafine kaolin stopping composition is calcined in modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151290 CN1247710C (en) | 2003-09-29 | 2003-09-29 | Method for preparing modified calcined superfine kaoline filler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151290 CN1247710C (en) | 2003-09-29 | 2003-09-29 | Method for preparing modified calcined superfine kaoline filler |
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| CN1528829A CN1528829A (en) | 2004-09-15 |
| CN1247710C true CN1247710C (en) | 2006-03-29 |
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| CN 03151290 Expired - Fee Related CN1247710C (en) | 2003-09-29 | 2003-09-29 | Method for preparing modified calcined superfine kaoline filler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900324A (en) * | 2015-04-21 | 2015-09-09 | 安徽埃克森科技集团有限公司 | Heat-insulation fireproof cable filler and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265827B (en) * | 2013-05-03 | 2015-07-15 | 浙江大学 | Method for intercalating and organically modifying kaolin by cetyl trimethyl ammonium bromide |
| CN103589365A (en) * | 2013-11-05 | 2014-02-19 | 重庆市锦艺硅材料开发有限公司苏州分公司 | Inorganic filler for copper-cladded plate and preparation method thereof |
| CN105061811B (en) * | 2015-09-10 | 2018-01-09 | 中国矿业大学(北京) | A kind of preparation method of APP/kaolin composite flame-retardant agent |
| CN105504624A (en) * | 2016-01-12 | 2016-04-20 | 芜湖航天特种电缆厂股份有限公司 | Filler for spaceflight cable and preparation method of filler |
| CN106589479A (en) * | 2016-12-06 | 2017-04-26 | 界首市华阳鞋业有限公司 | Antistatic, high-voltage-proof and anticorrosive shoe sole composition |
| CN107156146A (en) * | 2017-05-11 | 2017-09-15 | 安徽喜洋洋农业科技有限公司 | A kind of low property of medicine pesticidal preparations and its production method for being used to prevent and treat pest and disease damage |
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2003
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900324A (en) * | 2015-04-21 | 2015-09-09 | 安徽埃克森科技集团有限公司 | Heat-insulation fireproof cable filler and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Longyan Kaolin Clay Co., Ltd. Assignor: East China Normal University Contract fulfillment period: 2008.12.25 to 2014.12.25 contract change Contract record no.: 2009350000012 Denomination of invention: Method for preparing modified calcined superfine kaoline filler Granted publication date: 20060329 License type: Exclusive license Record date: 2009.2.17 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.25 TO 2014.12.25; CHANGE OF CONTRACT Name of requester: LONGYAN GAOLINGTU CO., LTD. Effective date: 20090217 |
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Granted publication date: 20060329 Termination date: 20120929 |