CN101880480A - Preparation method of calcinated argil - Google Patents
Preparation method of calcinated argil Download PDFInfo
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- CN101880480A CN101880480A CN201010169726XA CN201010169726A CN101880480A CN 101880480 A CN101880480 A CN 101880480A CN 201010169726X A CN201010169726X A CN 201010169726XA CN 201010169726 A CN201010169726 A CN 201010169726A CN 101880480 A CN101880480 A CN 101880480A
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- calcinated argil
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Abstract
The invention discloses a preparation method of calcined argil, comprising the following process steps of: selecting kaoline containing silicon dioxide not less than 4.8%, aluminium oxide not more than 36% and ferrum not less than 0.5% as raw materials and then calcinating the kaoline as the raw material 3-6 hours at constant temperature, wherein the calcinating temperature is 1000-1100 DEG C; smashing products obtained by calcinating and cooling the kaoline; adding 1-1.5 wt% of silane coupling agents in the smashed products, and then uniformly stirring and mixing under a heating condition to obtain the calcinated argil. The calcinated argil prepared with the method can be used as fillers for manufacturing wires and cables.
Description
Technical field
The present invention relates to chemical industry filler manufacturing technology field, especially a kind of preparation technology's method that is used as the calcinated argil of Ethylene Propylene Terpolymer electric wire loading material of rubber.
Background technology
The calcinated argil chemical property is stable, have as loading material of rubber and to extrude or the calendered goods smooth in appearance, have the good characteristics of resistance to acids and bases, thermotolerance and electrical insulating property, can give the good insulativity of terpolymer EP rubber, ventilation property, anti-Jie's property, therefore, calcinated argil obtains to widely apply in terpolymer EP rubber is made.At present the terpolymer EP rubber filler mainly depends on the imported product of the U.S., Britain with calcinated argil, and China is in for this class inorganic non-metallic chief of a pit the phase only sells the raw ore state, and does not still appear in the newspapers for the processing method of making calcinated argil.
Summary of the invention
Problem to be solved by this invention provides the preparation method of a kind of loading material of rubber with calcinated argil, and the calcinated argil that adopts this method to obtain is used to make terpolymer EP rubber as filler and can reaches the technical requirements of electric wire with rubber.
In order to address the above problem, the preparation method of this calcinated argil is by following processing step:
(1), material choice and processing: select silica weight≤48%, aluminium sesquioxide weight 〉=36%, the kaolin of iron weight≤0.5% is as raw material;
(2), calcination processing: feed kaolin was placed in the stove calcining at constant temperature 3～6 hours, and calcining temperature is 1000 ℃～1100 ℃;
(3), surface treatment: calcine cooled gains through after pulverizing, add weight and be 1%～1.5% silane coupling agent, under 110 ℃～120 ℃ temperature, stir, obtain calcinated argil after making silane evenly spread to the powder material surface.
In the aforesaid method, can be more specifically: the halloysite crystal habit weight in the described kaolin raw material accounts for 60-70%, crystal water content 〉=13.2%; In material choice and treatment step, described kaolin raw material is made 10 millimeters～20 millimeters particle earlier, is beneficial to penetrating of firepower, guarantees that potter's clay is heated evenly, and then enters and put the calcination processing step; In the described calcination processing step, described calcining refrigerative gains reenter into described surface treatment step after pulverizing and reaching particle diameter≤45 micron; The calcinated argil of gained sieves after the described surface treatment, chooses 200 order screen underflows as the product calcinated argil.
The alleged silane coupling agent of the present invention is vinyl three ('beta '-methoxy oxyethyl group) silane.
Because the beneficial effect that has adopted aforesaid method, the present invention to obtain is as follows:
Prepared cable rubber is through cable research institution check, and its every performance all reaches and meets GB/T12706.3-2002 " voltage rating 1KV (Um=1.2KV) is to 35KV (Um=40.5KV) extruded insulation power cable and annex " the 3rd part: " voltage rating 35KV(Um=40.5KV) cable " standard-required.
Embodiment
Below in conjunction with specific embodiment present method is described in further detail:
Embodiment 1:
1, with through after the magnetic separation bleaching, the weight in wet base percentage is that 7% area, Maoming, China Guangdong kaolin is raw material, and wherein: SiO2 48%, Al2O336.5%, and Fe0.4%, crystal water content 13.2%, halloysite crystal habit weight accounts for 60%, whiteness 84%;
2, make the particle that particle diameter is 10 millimeters a no solid shape with tablets press;
3, the kaolin particle after the moulding is placed in the tunnel furnace calcining 3 hours, calcining temperature is 1020 ℃ ± 20 ℃;
4, adopt supper micron mill to carry out grinding and processing and reach diameter less than 45 microns to calcining cooled gains, screenings≤0.03%, fineness reaches more than 2500 orders;
5, to pulverize in the gains by weight 1% add the A-172 silane coupling agent, under 110 ℃ of heating conditions, mixed 25 minutes, make silane coupling agent be wrapped in the potter's clay surface well, adopt efficient cyclone sieve that the potter's clay after the surface treatment is sieved to cooled gains, make potter's clay product 200 order all-pass get the calcinated argil final product after promptly.
The physical and chemical index of the obtained calcinated argil final product of present embodiment is as follows: SiO
254.5%, Al
2O
341.5%, Fe
2O
30.5%, whiteness 90.5%, 325 mesh sieve surplus 0.022%, fineness 2500 orders, turbidity 5.
With the Ethylene Propylene Terpolymer cable rubber experiment that rubber 100, vulcanizing agent 3, anti-aging agent 2, calcinated argil 60 proportionings are made, the technical indicator of the cable rubber that obtains is as follows:
1, the tensile strength of cable rubber: 15.2MPa;
2, the elongation at break of cable rubber: 260%;
3, thermal ageing test (135 ℃ * 168h):
(1) the maximum velocity of variation of the tensile strength of cable rubber :+3;
(2) the maximum velocity of variation of the extension at break of cable rubber:--14;
4, volume specific resistance during 20 ℃ of cable rubber: 1.4 * 10
14Ω m;
5, the specific inductivity of cable rubber: 2.51;
6, the dielectric loss angle tangent of cable rubber: 2.6 * 10
-3
7, dielectric strength: 28MV/m during 20 ℃ of cable rubber.
Embodiment 2:
1, with through after the magnetic separation bleaching, the weight in wet base percentage is that 10% area, Maoming, China Guangdong kaolin is raw material, wherein SiO
246.5%, Al
2O
338.2%, Fe
2O
30.4%, halloysite crystal habit weight accounts for 70%, crystal water content 14%, whiteness 86;
2, make the particle that particle diameter is 20 millimeters a no solid shape with tablets press;
3, the kaolin particle after the moulding is placed in the tunnel furnace calcining 6 hours, calcining temperature is 1080 ℃ ± 20 ℃;
4, adopt supper micron mill to carry out grinding and processing and reach diameter less than 45 microns to calcining cooled gains, screenings≤0.03%, fineness reaches more than 2500 orders;
5, to pulverize in the gains by weight 1.5% add the A-172 silane coupling agent, under 120 ℃ of heating conditions, mixed 30 minutes, make silane coupling agent be wrapped in the potter's clay surface well, adopt efficient cyclone sieve that the potter's clay after the surface treatment is sieved to cooled gains, make potter's clay product 200 order all-pass get the calcinated argil final product after promptly.
The physical and chemical index of the obtained calcinated argil final product of present embodiment is as follows: SiO
252.6%, Al
2O
343.2%, Fe
2O
30.5%, whiteness 91.6%,, 325 mesh sieve surpluses 0.02%, fineness 2500 orders, turbidity 2;
The Ethylene Propylene Terpolymer cable rubber made from rubber 100, vulcanizing agent 3, anti-aging agent 2, calcinated argil 60 proportionings is example, and the technical indicator of the cable rubber that obtains is as follows:
1, the tensile strength of cable rubber: 16.2MPa;
2, the elongation at break of cable rubber: 290;
3, thermal ageing test (135 ℃ * 168h):
(1) the maximum velocity of variation of the tensile strength of cable rubber :+2;
(2) the maximum velocity of variation of the extension at break of cable rubber:--10;
4, volume specific resistance during 20 ℃ of cable rubber: 2.5 * 10
14Ω m;
5, the specific inductivity of cable rubber: 2.54;
6, the dielectric loss angle tangent of cable rubber: 2.5 * 10
-3
7, dielectric strength: 35MV/m during 20 ℃ of cable rubber.
Embodiment 3:
1, with through after the magnetic separation bleaching, the weight in wet base percentage is that 4% area, Maoming, China Guangdong kaolin is raw material, wherein SiO
247.8%, Al
2O
337.2%, Fe
2O
30.4%, crystal water content 13.5%, whiteness 85%, halloysite crystal habit weight accounts for 70%, whiteness 85;
2, make the particle that particle diameter is 20 millimeters a no solid shape with tablets press;
3, the kaolin particle after the moulding is placed in the tunnel furnace calcining 5 hours, calcining temperature is 1070 ℃ ± 20 ℃;
4, adopt supper micron mill to carry out grinding and processing and reach diameter less than 45 microns to calcining cooled gains, screenings≤0.03%, fineness reaches more than 2500 orders;
5, to pulverize in the gains by weight 1.5% add the A-172 silane coupling agent, under 120 ℃ of heating conditions, mixed 20 minutes, make silane coupling agent be wrapped in the potter's clay surface well, adopt efficient cyclone sieve that the potter's clay after the surface treatment is sieved to cooled gains, make potter's clay product 200 order all-pass get the calcinated argil final product after promptly.
The physical and chemical index of the obtained calcinated argil final product of present embodiment is as follows: SiO
253.8%, Al
2O
342.6%, Fe
2O
30.5%, whiteness 91%, 325 mesh sieve surplus 0.023%, fineness 2500 orders, turbidity 3.
The Ethylene Propylene Terpolymer cable rubber made from rubber 100, vulcanizing agent 3, anti-aging agent 2, calcinated argil 60 proportionings is example, and the technical indicator of the cable rubber that obtains is as follows:
1, the tensile strength of cable rubber: 15.6MPa;
2, the elongation at break of cable rubber: 260;
3, thermal ageing test (135 ℃ * 168h):
(1) the maximum velocity of variation of the tensile strength of cable rubber :+5;
(2) the maximum velocity of variation of the extension at break of cable rubber:--12;
4, volume specific resistance during 20 ℃ of cable rubber: 1.6 * 10
14Ω m;
5, the specific inductivity of cable rubber: 2.5;
6, the dielectric loss angle tangent of cable rubber: 2.6 * 10
-3
7, dielectric strength: 30MV/m during 20 ℃ of cable rubber.
Claims (3)
1. the preparation method of a calcinated argil is characterized in that each processing step is as follows:
(1), material choice and processing: select silica weight≤48%, aluminium sesquioxide weight 〉=36%, the kaolin of iron weight≤0.5% is as raw material;
(2), calcination processing: feed kaolin was placed in the stove calcining at constant temperature 3～6 hours, and calcining temperature is 1000 ℃～1100 ℃;
(3), surface treatment: calcine cooled gains through after pulverizing, add weight and be 1%～1.5% silane coupling agent, under 110 ℃～120 ℃ temperature, stir, obtain calcinated argil after making silane evenly spread to the powder material surface.
2. the preparation method of calcinated argil according to claim 1, it is characterized in that: the halloysite crystal habit weight in the described kaolin raw material accounts for 60-70%, crystal water content 〉=13.2%.
3. the preparation method of calcinated argil according to claim 1 and 2, it is characterized in that: in material choice and treatment step, described kaolin raw material is made 10 millimeters～20 millimeters particle earlier, and then enters and put the calcination processing step; In the described calcination processing step, described calcining refrigerative gains reenter into described surface treatment step after pulverizing and reaching particle diameter≤45 micron; The calcinated argil of gained sieves after the described surface treatment, chooses 200 order screen underflows as the product calcinated argil.
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| CN 201010169726 CN101880480B (en) | 2010-05-12 | 2010-05-12 | Preparation method of calcinated argil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702624A (en) * | 2011-12-31 | 2012-10-03 | 深圳罗庚电气有限公司 | Ternary ethylenepropylene insulating sizing material for 35KV high-voltage cable accessory and preparation method for ternary ethylenepropylene insulating sizing material |
| CN103332926A (en) * | 2013-05-28 | 2013-10-02 | 西南石油大学 | Chlorine oxygen magnesium silicon clay material for inner layers of molds, preparation technology and evaluation method thereof |
| CN108298993A (en) * | 2018-03-12 | 2018-07-20 | 天津城建大学 | Ceramic material rotary kiln dry granulation methods |
| CN112125580A (en) * | 2020-08-15 | 2020-12-25 | 上海理迪道具有限公司 | Interior trimming panel, and preparation method and mold of interior trimming panel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702624A (en) * | 2011-12-31 | 2012-10-03 | 深圳罗庚电气有限公司 | Ternary ethylenepropylene insulating sizing material for 35KV high-voltage cable accessory and preparation method for ternary ethylenepropylene insulating sizing material |
| CN102702624B (en) * | 2011-12-31 | 2015-08-12 | 深圳市罗庚电气有限公司 | A kind of Ethylene Propylene Terpolymer insulation compound for 35KV HV cable accessories and preparation method thereof |
| CN103332926A (en) * | 2013-05-28 | 2013-10-02 | 西南石油大学 | Chlorine oxygen magnesium silicon clay material for inner layers of molds, preparation technology and evaluation method thereof |
| CN103332926B (en) * | 2013-05-28 | 2014-06-25 | 西南石油大学 | Chlorine oxygen magnesium silicon clay material for inner layers of molds, preparation technology and evaluation method thereof |
| CN108298993A (en) * | 2018-03-12 | 2018-07-20 | 天津城建大学 | Ceramic material rotary kiln dry granulation methods |
| CN112125580A (en) * | 2020-08-15 | 2020-12-25 | 上海理迪道具有限公司 | Interior trimming panel, and preparation method and mold of interior trimming panel |
| CN112125580B (en) * | 2020-08-15 | 2022-01-04 | 上海理迪道具有限公司 | Interior trimming panel, and preparation method and mold of interior trimming panel |
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| CN101880480B (en) | 2013-03-27 |
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