CN110467442A - A kind of high-strength porcelain insulator and preparation method thereof - Google Patents

A kind of high-strength porcelain insulator and preparation method thereof Download PDF

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CN110467442A
CN110467442A CN201910860422.9A CN201910860422A CN110467442A CN 110467442 A CN110467442 A CN 110467442A CN 201910860422 A CN201910860422 A CN 201910860422A CN 110467442 A CN110467442 A CN 110467442A
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solution
solid phase
parts
porcelain insulator
preparation
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CN110467442B (en
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朱静
吴水燕
周蒙
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Jiangxi Pingchi Industrial Co Ltd
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Jiangxi Pingchi Industrial Co Ltd
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Abstract

The invention discloses a kind of high-strength porcelain insulator and preparation method thereof, the porcelain insulator is sintered by following raw materials according: 8~16 parts of kaolin, 9~20 parts of quartz sand, 10~14 parts of mullite, 2~5 parts of potassium feldspar, 2~5 parts of titanium dioxide additive, 40~50 parts of bauxite and 6~20 parts of nano boric acid cerium.The beneficial effects of the present invention are, the present invention changes the component and proportion of porcelain insulator raw material on the basis of conventional preparation techniques, porcelain insulator obtained compared with the prior art in porcelain insulator have more excellent tensile strength and compression strength, and good insulating properties is maintained, the erection suitable for UHV transmission line is installed.

Description

A kind of high-strength porcelain insulator and preparation method thereof
Technical field
The invention belongs to insulator technology fields more particularly to a kind of high-strength porcelain insulator and preparation method thereof.
Background technique
UHV transmission line transmission capacity is big, and the conductor cross-section of use is big, and branch's number is more, to the exhausted of carrying wire tension More stringent requirements are proposed for edge, it is desirable that its bearing capacity is high, uniform force.It is general to can solve this problem there are two types of mode, First is that increasing insulator serial number, second is that using the insulator of high mechanical strength.Increasing insulator serial number will lead to insulator Hardware string complicated in mechanical structure, installation and operation maintenance workload is big, increase engineering overall life cycle cost；And it uses mechanical strong Insulator serial number can be reduced by spending higher insulator, reduce strain hardware fitting string complexity, reduce operation expense.
Summary of the invention
In order to solve the above technical problems, the porcelain insulator is by following the present invention provides a kind of high-strength porcelain insulator Raw material is sintered: kaolin, quartz sand, mullite, potassium feldspar, titanium dioxide additive, bauxite and nano boric acid cerium；
The preparation method of the titanium dioxide additive comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh or more, collects powder after sieving, mistake Powder acetone washing after sieve, drying obtain solid phase A；
2) mixture being formed in the ammonia spirit containing ethylene glycol in solid phase A immersion, mixture is placed in closed container, Container is sealed, 150~170 DEG C of 10~30min of heat preservation are heated to, then naturally cools to room temperature, closed container is opened and takes out Mixture is separated by solid-liquid separation, and solid phase is washed with deionized 2~3 times, is dried, and solid phase B is obtained；
3) the solid phase B is immersed in silicon tetrachloride, to solution vacuumize process until not having bubble to emerge, solution is taken Out, be separated by solid-liquid separation, solid phase drying obtain solid phase C, solid phase C is placed under nitrogen protection atmosphere be heated to 200 DEG C heat preservation 20~ 30min is then proceeded to be warming up to 400~500 DEG C of 1~2h of heat preservation, is air-cooled to room temperature after heat preservation, obtains the titanium dioxide Additive.
Further, each raw material mixing quality portion rate are as follows: 8~16 parts of kaolin, 9~20 parts of quartz sand, mullite 10 ~14 parts, 2~5 parts of potassium feldspar, 2~5 parts of titanium dioxide additive, 40~50 parts of bauxite and 6~20 parts of nano boric acid cerium.
Further, in the ammonia spirit containing ethylene glycol, NH3Mass percentage be 5%~10%, ethylene glycol Volume fraction is 1%~3%, and the ammonia spirit quality containing ethylene glycol is 5 times or more for impregnating solid phase A mass therein.
Further, the silicon tetrachloride quality is 5 times or more for impregnating solid phase A mass therein.
Further, the nano boric acid cerium the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, solution A constant temperature water bath is to 50~60 DEG C, Xiang Rong Oleic acid is added in liquid A, is stirred solution 40min or more；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 2~3 times, drying obtains the nano boric acid cerium.
Further, Na in the solution A2B4O7·10H2The concentration of O is 3~5g/100mL, remaining is water；In solution B The concentration of cerous nitrate is 1~4g/mL, remaining is water；Amount=8~10g/100mL of the oleic acid additional amount/solution A.
The invention also discloses the preparation methods of above-mentioned high-strength porcelain insulator, comprise the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18% (all water content of the present invention refer both to aqueous mass percentage), the aging 48h or more of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the mud cake after stirring is aging, and sprayed to mud cake The aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjusting mud cake water content is 20%~25%, extrusion molding, 120 DEG C It is dried below to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 420~500 DEG C of first segment keep the temperature 5~7 hours, 980~1000 DEG C of second segment 1~2h is kept the temperature, 1150~1200 DEG C of third section keep the temperature 5~7 hours, furnace cooling after roasting, mucilage binding, test, and finished product enters Library obtains the high-strength porcelain insulator.
Further, in the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, the mass percentage of each component For polyethylene glycol 10%~16%, stannic chloride 5%~8%, tantalic chloride 2%~3%.
As can be seen from the above technical solutions, the beneficial effects of the present invention are base of the present invention in conventional preparation techniques Change the component and proportion of porcelain insulator raw material on plinth, porcelain insulator obtained compared with the prior art in porcelain insulator tool There are more excellent tensile strength and compression strength, and maintains good insulating properties, the frame suitable for UHV transmission line If installation.
Specific embodiment
It is described in detail below with reference to embodiment:
Embodiment 1
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 8 parts of kaolin, 9 parts of quartz sand, not Come 10 parts of stone, 2 parts of potassium feldspar, 2 parts of titanium dioxide additive, 40 parts of bauxite and 6 parts of nano boric acid cerium.
The preparation method of titanium dioxide additive described in the present embodiment comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 5%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 1%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 10min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 20min, then proceed to be warming up to 400 DEG C of heat preservation 2h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
Nano boric acid cerium described in the present embodiment the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 3g/100mL, remaining is water；The concentration of cerous nitrate is 1g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=8g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in the present embodiment, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 10%, stannic chloride 5%, tantalic chloride 2%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 420~430 DEG C of first segment keep the temperature 5 hours, 980~1000 DEG C of second segment guarantors 1~2h of temperature, 1150~1200 DEG C of third section keep the temperature 5~7 hours, furnace cooling after roasting, mucilage binding, test, warehousing finished products, Obtain the high-strength porcelain insulator.
Embodiment 2
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 10 parts of kaolin, 12 parts of quartz sand, 11 parts of mullite, 3 parts of potassium feldspar, 3 parts of titanium dioxide additive, 43 parts of bauxite and 10 parts of nano boric acid cerium.
The preparation method of titanium dioxide additive described in the present embodiment comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 7%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 2%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 20min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 20min, then proceed to be warming up to 430 DEG C of heat preservation 2h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
Nano boric acid cerium described in the present embodiment the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 4g/100mL, remaining is water；The concentration of cerous nitrate is 2g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=9g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in the present embodiment, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 12%, stannic chloride 6%, tantalic chloride 2%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 440~450 DEG C of first segment keep the temperature 6 hours, 980~1000 DEG C of second segment guarantors Warm 1h, 1150~1200 DEG C of third section keep the temperature 6 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Embodiment 3
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 14 parts of kaolin, 16 parts of quartz sand, 13 parts of mullite, 4 parts of potassium feldspar, 4 parts of titanium dioxide additive, 48 parts of bauxite and 12 parts of nano boric acid cerium.
The preparation method of titanium dioxide additive described in the present embodiment comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 8%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 2%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 20min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 30min, then proceed to be warming up to 480 DEG C of heat preservation 1h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
Nano boric acid cerium described in the present embodiment the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 4g/100mL, remaining is water；The concentration of cerous nitrate is 3g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=9g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in the present embodiment, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 14%, stannic chloride 7%, tantalic chloride 3%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 460~470 DEG C of first segment keep the temperature 6 hours, 980~1000 DEG C of second segment guarantors Warm 2h, 1150~1200 DEG C of third section keep the temperature 6 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Embodiment 4
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 16 parts of kaolin, 20 parts of quartz sand, 14 parts of mullite, 5 parts of potassium feldspar, 5 parts of titanium dioxide additive, 50 parts of bauxite and 20 parts of nano boric acid cerium.
The preparation method of titanium dioxide additive described in the present embodiment comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 10%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 3%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 30min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 30min, then proceed to be warming up to 500 DEG C of heat preservation 1h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
Nano boric acid cerium described in the present embodiment the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 5g/100mL, remaining is water；The concentration of cerous nitrate is 4g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=10g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in the present embodiment, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 16%, stannic chloride 8%, tantalic chloride 3%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 480~500 DEG C of first segment keep the temperature 7 hours, 980~1000 DEG C of second segment guarantors Warm 2h, 1150~1200 DEG C of third section keep the temperature 7 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Comparative example 1
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 14 parts of kaolin, 16 parts of quartz sand, 13 parts of mullite, 4 parts of potassium feldspar, 4 parts of titania powder, 48 parts of bauxite and 12 parts of nano boric acid cerium.
The preparation method of titania powder described in this comparative example comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying, obtains the titania powder.
Nano boric acid cerium described in this comparative example the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 4g/100mL, remaining is water；The concentration of cerous nitrate is 3g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=9g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in the present embodiment, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 14%, stannic chloride 7%, tantalic chloride 3%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 460~470 DEG C of first segment keep the temperature 6 hours, 980~1000 DEG C of second segment guarantors Warm 2h, 1150~1200 DEG C of third section keep the temperature 6 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Comparative example 2
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 14 parts of kaolin, 16 parts of quartz sand, 13 parts of mullite, 4 parts of potassium feldspar, 4 parts of titanium dioxide additive and 48 parts of bauxite.
The preparation method of titanium dioxide additive described in this comparative example comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 8%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 2%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 20min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 30min, then proceed to be warming up to 480 DEG C of heat preservation 1h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
The preparation method of high-strength porcelain insulator described in this comparative example, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the polyethylene glycol, stannic chloride and tantalic chloride Aqueous solution in, the mass percentage of each component is polyethylene glycol 14%, stannic chloride 7%, tantalic chloride 3%；Stir it is aging after Mud cake, and spray to mud cake the aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjust mud cake water content be 20%~ 25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 460~470 DEG C of first segment keep the temperature 6 hours, 980~1000 DEG C of second segment guarantors Warm 2h, 1150~1200 DEG C of third section keep the temperature 6 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Comparative example 3
A kind of high-strength porcelain insulator, the porcelain insulator are sintered by following raw materials according: 14 parts of kaolin, 16 parts of quartz sand, 13 parts of mullite, 4 parts of potassium feldspar, 4 parts of titanium dioxide additive, 48 parts of bauxite and 12 parts of nano boric acid cerium.
The preparation method of titanium dioxide additive described in this comparative example comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh, powder after sieving is collected, after sieving Powder acetone washing, drying obtain solid phase A；
2) NH is configured3Mass percentage be 8%, the ammonia spirit containing ethylene glycol that the volume fraction of ethylene glycol is 2%, will Mixture, the ammonia spirit quality containing ethylene glycol in mixture are formed in the ammonia spirit containing ethylene glycol in the solid phase A immersion For 5 times for impregnating solid phase A mass therein；Mixture is placed in closed container, container is sealed, is heated to 160 ± 10 DEG C 20min is kept the temperature, room temperature is then naturally cooled to, closed container is opened and takes out mixture, be separated by solid-liquid separation, solid phase is washed with deionized water It washs 3 times, dries, obtain solid phase B；
3) the solid phase B is immersed in silicon tetrachloride, silicon tetrachloride quality is 5 times for impregnating solid phase A mass therein, right Solution vacuumize process takes out solution until not having bubble to emerge, and is separated by solid-liquid separation, and solid phase drying obtains solid phase C, by solid phase C It is placed under nitrogen protection atmosphere and is heated to 200 DEG C of heat preservation 30min, then proceed to be warming up to 480 DEG C of heat preservation 1h, it is empty after heat preservation It is cooled to room temperature, obtains the titanium dioxide additive.
Nano boric acid cerium described in this comparative example the preparation method comprises the following steps:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, Na in the solution A2B4O7·10H2O's is dense Degree is 4g/100mL, remaining is water；The concentration of cerous nitrate is 3g/mL in solution B, remaining is water；Solution A constant temperature water bath to 50~ 60 DEG C, oleic acid is added into solution A, oleic acid additional amount/solution A amount=9g/100mL is stirred solution 40min；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 3 times, drying obtains the nano boric acid cerium.
The preparation method of high-strength porcelain insulator described in this comparative example, comprises the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h of mud cake；
Step 2, with deionized water adjust mud cake water content be 20%~25%, extrusion molding, 100 ± 5 DEG C of dryings to water content 12% ~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 460~470 DEG C of first segment keep the temperature 6 hours, 980~1000 DEG C of second segment guarantors Warm 2h, 1150~1200 DEG C of third section keep the temperature 6 hours, furnace cooling after roasting, mucilage binding, test, and warehousing finished products obtain institute State high-strength porcelain insulator.
Embodiment 5
Test sample is prepared according to method described in Examples 1 to 4 and comparative example 1~3, tests the tension of same group of sample respectively Intensity and compression strength, the results are shown in Table 1.
Table 1
Test group Tensile strength/MPa Compression strength/MPa
Embodiment 1 224.25 2884.32
Embodiment 2 231.08 2899.51
Embodiment 3 233.51 2967.74
Embodiment 4 229.86 2893.38
Comparative example 1 168.80 1520.05
Comparative example 2 85.01 632.58
Comparative example 3 144.43 1398.22
As shown in Table 1, using the titanium dioxide additive and nano boric acid cerium of preparation method of the present invention preparation as raw material Porcelain insulator obtained has more excellent tensile strength and compression strength compared to currently used porcelain insulator；Comparison is real Apply example 3 and comparative example 3 it is found that in porcelain insulator preparation process be added polyethylene glycol, stannic chloride and tantalic chloride aqueous solution, The mechanical property of insulator product can be further increased, improves strengths in tension and compression, this may be due to inside porcelain insulator The result that micro-crack is partially made up.
Technical solution provided by the present invention is described in detail above, for those of ordinary skill in the art, Thought according to an embodiment of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this theory Bright book content should not be construed as limiting the invention.

Claims (8)

1. a kind of high-strength porcelain insulator, which is characterized in that the porcelain insulator is sintered by following raw materials according: kaolin, stone Sand, mullite, potassium feldspar, titanium dioxide additive, bauxite and nano boric acid cerium；
The preparation method of the titanium dioxide additive comprises the following steps:
1) titania powder is subjected to ball milling, the powder after ball milling crosses the sieve of 1500 mesh or more, collects powder after sieving, mistake Powder acetone washing after sieve, drying obtain solid phase A；
2) mixture being formed in the ammonia spirit containing ethylene glycol in solid phase A immersion, mixture is placed in closed container, Container is sealed, 150~170 DEG C of 10~30min of heat preservation are heated to, then naturally cools to room temperature, closed container is opened and takes out Mixture is separated by solid-liquid separation, and solid phase is washed with deionized 2~3 times, is dried, and solid phase B is obtained；
3) the solid phase B is immersed in silicon tetrachloride, to solution vacuumize process until not having bubble to emerge, solution is taken Out, be separated by solid-liquid separation, solid phase drying obtain solid phase C, solid phase C is placed under nitrogen protection atmosphere be heated to 200 DEG C heat preservation 20~ 30min is then proceeded to be warming up to 400~500 DEG C of 1~2h of heat preservation, is air-cooled to room temperature after heat preservation, obtains the titanium dioxide Additive.
2. a kind of high-strength porcelain insulator according to claim 1, which is characterized in that each raw material mixing quality portion rate Are as follows: 8~16 parts of kaolin, 9~20 parts of quartz sand, 10~14 parts of mullite, 2~5 parts of potassium feldspar, titanium dioxide additive 2~5 Part, 40~50 parts of bauxite and 6~20 parts of nano boric acid cerium.
3. a kind of high-strength porcelain insulator according to claim 1, which is characterized in that the ammonia spirit containing ethylene glycol In, NH3Mass percentage be 5%~10%, the volume fraction of ethylene glycol is 1%~3%, the ammonia spirit quality containing ethylene glycol For 5 times or more for impregnating solid phase A mass therein.
4. a kind of high-strength porcelain insulator according to claim 1, which is characterized in that the silicon tetrachloride quality is to impregnate 5 times or more of solid phase A mass therein.
5. a kind of high-strength porcelain insulator according to claim 1, which is characterized in that the preparation side of the nano boric acid cerium Method are as follows:
(1) Na is configured2B4O7·10H2The water solution A and cerous nitrate solution B of O, solution A constant temperature water bath is to 50~60 DEG C, to solution Oleic acid is added in A, is stirred solution 40min or more；
(2) after the completion of stirring, solution B is added dropwise into solution A under stirring, until no longer generating precipitating, is added dropwise It filters after the completion, for solid phase with ethanol washing 2~3 times, drying obtains the nano boric acid cerium.
6. a kind of high-strength porcelain insulator according to claim 5, which is characterized in that Na in the solution A2B4O7· 10H2The concentration of O is 3~5g/100mL, remaining is water；The concentration of cerous nitrate is 1~4g/mL in solution B, remaining is water；It is described Oleic acid additional amount/solution A amount=8~10g/100mL.
7. the preparation method of high-strength porcelain insulator as claimed in claim 2, which is characterized in that comprise the following steps:
Step 1 weighs each raw material by the mass fraction, and each raw material is mixed, sieving, mud refining, and mud cake water content holding 12%~ 18%, the aging 48h or more of mud cake；
Step 2, the aqueous solution for configuring polyethylene glycol, stannic chloride and tantalic chloride, the mud cake after stirring is aging, and sprayed to mud cake The aqueous solution of the polyethylene glycol, stannic chloride and tantalic chloride, adjusting mud cake water content is 20%~25%, extrusion molding, 120 DEG C It is dried below to water content 12%~18%, repaired biscuit, glazing；
Step 3, blank are roasted with three sections of oxidizing flame, and 420~500 DEG C of first segment keep the temperature 5~7 hours, 980~1000 DEG C of second segment 1~2h is kept the temperature, 1150~1200 DEG C of third section keep the temperature 5~7 hours, furnace cooling after roasting, mucilage binding, test, and finished product enters Library obtains the high-strength porcelain insulator.
8. preparation method as claimed in claim 7, which is characterized in that the water of the polyethylene glycol, stannic chloride and tantalic chloride In solution, the mass percentage of each component is polyethylene glycol 10%~16%, stannic chloride 5%~8%, tantalic chloride 2%~3%.
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CN111099882A (en) * 2019-12-30 2020-05-05 湖南高强电瓷电器有限公司 High-strength ultrahigh-voltage hollow porcelain insulator and preparation method thereof
CN112919882A (en) * 2021-03-30 2021-06-08 江西省萍乡市华东出口电瓷有限公司 High-strength high-hardness weather-resistant porcelain insulator and preparation method thereof
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