CN102254652A - Preparation method of magnesia heat-conducting insulating material for electric heating tube - Google Patents
Preparation method of magnesia heat-conducting insulating material for electric heating tube Download PDFInfo
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- CN102254652A CN102254652A CN2011100986854A CN201110098685A CN102254652A CN 102254652 A CN102254652 A CN 102254652A CN 2011100986854 A CN2011100986854 A CN 2011100986854A CN 201110098685 A CN201110098685 A CN 201110098685A CN 102254652 A CN102254652 A CN 102254652A
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Abstract
The invention discloses a preparation method of a magnesia heat-conducting insulating material for an electric heating tube. The preparation method comprises the following steps: crushing electric-fused magnesia powder with purity not less than 96% into magnesia powder with different granularities of 50-60 meshes, 60-80 meshes, 80-140 meshes, 140-200 meshes, 200-325 meshes and 320 meshes; mixing sequentially according to the weight ratio of 25%, 20%, 25%, 15%, 10% and 5%; deironing; stoving, sequentially and uniformly mixing with talcum powder, active alpha-Al2O3, mullite powder and rear earth catalyst according to 100, 35, 17, 6 and 2 parts by weight in sequence so as to prepare an environment-friendly magnesia heat-conducting insulating material for the electric heating tube. The property of the electric heating tube made from the heat-conducting insulating material cannot be changed when the temperature is over 250 DEG.C, cannot produce any toxic gas and cannot pollute the environment.
Description
Technical field
The present invention relates to electrical insulating material, be specially a kind of high temperature and can not produce the preparation method of the electrothermal tube of toxic gas with the magnesium oxide heat-conducting insulation material.
Background technology
Existing commercially available household appliances, as electric cooker, soy bean milk making machine, the electrothermal tube that water dispenser etc. are used, the heat-conducting insulation material that adopts is for adding the magnesia powder of organic silicone oil and organic siliconresin, though its electrical property and humidity resistance can reach standard-required, but there is a very big defective, promptly after the energising, when the temperature of electrothermal tube is raised to more than 250 ℃, wherein macromolecular material organic silicone oil and organic siliconresin can decompose gradually, original structure is destroyed, not only lose original bonding, protection against the tide and electric property also can discharge toxic gas, and surrounding environment and human body are worked the mischief.Because of not finding better solution for a long time, this situation is continued into the present always.
Summary of the invention
The objective of the invention is provides the preparation method of a kind of electrothermal tube with the magnesium oxide heat-conducting insulation material at the defective of above-mentioned prior art, electrothermal tube uses the magnesium oxide heat-conducting insulation material of this method preparation, even temperature is above 250 ℃, performance can not change yet, and can not produce any toxic gas, can not pollute environment.
For achieving the above object, the present invention adopts the good inorganic material of high-temperature stability to replace the property-modifying additive of the labile organic material of high temperature as the magnesium oxide heat-conducting insulation material.
The electrothermal tube of the present invention preparation method of magnesium oxide heat-conducting insulation material may further comprise the steps:
(1) purity is not less than 96% electrically molten magnesia and pulverizes, sieve into 50-60 order, 60-80 order, 80-140 order, 140-200 order, 200-325 order and the varigrained magnesia powder of-320 orders;
(2) varigrained magnesia powder of (1) step is taken by weighing by 25%, 20%, 25%, 15%, 10% and 5% weight ratio successively, mix;
(3) magnesia powder with (2) step carries out deironing;
(4) magnesia powder after (3) step deironing was dried by the fire 45 minutes under 300 ℃ of temperature;
(5) magnesia powder and the following inorganic matter in (4) step are prepared burden by weight:
35 parts of 100 parts of magnesia powders, the iron-holder talcum powder below 0.1%, granularity 1000 order active alpha-Al
2O
317 parts, 6 parts in granularity 200 order mullite powder, 2 parts of rare earth catalysts; With various batching mixings, be electrothermal tube magnesium oxide heat-conducting insulation material.
Optional cerium oxide (the CeO of above-mentioned rare earth catalyst
2), lanthana (La
2O
3), samarium oxide (Sm
2O
3) in any.
Magnesium oxide heat-conducting insulation material of the present invention is by mullite, talcum powder, active alpha-Al
2O
3The additive of forming with inorganic matter such as rare earth catalyst can generate a kind of SiO around magnesium oxide particle under uniform temperature, humidity, pressure
2-Si-O-Si-SiO
2Mesh material plays good moisture-proof role to magnesia powder.Good with its electrothermal tube humidity resistance of manufacturing; Leakage current little (0.05mA is following); In the energising work, do not have any gaseous emission, environmentally safe.
Embodiment
Embodiment 1
(1) getting purity is that 96% electrically molten magnesia is pulverized, and sieves into 50-60 order, 60-80 order, 80-140 order, 140-200 order, 200-325 order and the varigrained magnesia powder of-320 orders;
(2) above-mentioned varigrained magnesia powder is taken by weighing by 25%, 20%, 25%, 15%, 10% and 5% weight ratio successively, mix;
(3) utilize the above dry-type magnetic extractor of magnetic field intensity 18000GS that the magnesia powder in (2) step is carried out deironing;
(4) magnesia powder after the deironing was dried by the fire 45 minutes under 300 ℃ of temperature, remove wherein moisture and fugitive constituent;
(5) magnesia powder and the following inorganic matter in (4) step are prepared burden by weight:
35 parts of 100 parts of magnesia powders, the iron-holder talcum powder below 0.1%, granularity 1000 order active alpha-Al
2O
317 parts, 6 parts in granularity 200 order mullite powder, 3.3 parts of cerium oxide; With various batching mixings, promptly get electrothermal tube magnesium oxide heat-conducting insulation material.
(6) tubulature test:
With above-mentioned magnesium oxide heat-conducting insulation material pack into the test electrothermal tube in, at relative humidity 92RH, 36 ℃ of temperature were placed 12 hours; Then at 80KG/cm
2The draw under the pressure; Dry by the fire 2.5h down at 380 ℃ again; At last 820 ℃ of sintering 20 minutes.The test of cooling back its electrical property such as table 1:
Table 1
Humidity resistance: anti-450 ℃ of damp attitude; In the energising work, there are not any gas and smog emission.
Embodiment 2
Step is identical with embodiment 1, only changes the rare earth catalyst cerium oxide into lanthana in (5) step, and all the other are all identical.This magnesium oxide heat-conducting insulation material is tested through tubulature, its electrical property such as table 2:
Table 2
Humidity resistance: anti-450 ℃ of damp attitude; In the energising work, there are not any gas and smog emission.
Embodiment 3
Step is identical with embodiment 1, only changes the rare earth catalyst cerium oxide into samarium oxide in (5) step, and all the other are all identical.This magnesium oxide heat-conducting insulation material is tested through tubulature, its electrical property such as table 3:
Table 3
Humidity resistance: anti-450 ℃ of damp attitude; In the energising work, there are not any gas and smog emission.
Claims (2)
1. an electrothermal tube is characterized in that this method may further comprise the steps with the preparation method of magnesium oxide heat-conducting insulation material:
(1) purity is not less than 96% electrically molten magnesia and pulverizes, sieve into 50-60 order, 60-80 order, 80-140 order, 140-200 order, 200-325 order and the varigrained magnesia powder of-320 orders;
(2) varigrained magnesia powder of (1) step is taken by weighing by 25%, 20%, 25%, 15%, 10% and 5% weight ratio successively, mix;
(3) magnesia powder with (2) step carries out deironing;
(4) magnesia powder after (3) step deironing was dried by the fire 45 minutes under 300 ℃ of temperature;
(5) magnesia powder and the following inorganic matter in (4) step are prepared burden by weight:
35 parts of 100 parts of magnesia powders, the iron-holder talcum powder below 0.1%, granularity 1000 order active alpha-Al
2O
317 parts, 6 parts in granularity 200 order mullite powder, 2 parts of rare earth catalysts; With various batching mixings, be electrothermal tube magnesium oxide heat-conducting insulation material.
2. according to the preparation method of the described electrothermal tube of claim 1, it is characterized in that described step (5) middle rare earth catalyst is any in cerium oxide, lanthana, the samarium oxide with the magnesium oxide heat-conducting insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100986854A CN102254652B (en) | 2011-04-20 | 2011-04-20 | Preparation method of magnesia heat-conducting insulating material for electric heating tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100986854A CN102254652B (en) | 2011-04-20 | 2011-04-20 | Preparation method of magnesia heat-conducting insulating material for electric heating tube |
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|---|---|
| CN102254652A true CN102254652A (en) | 2011-11-23 |
| CN102254652B CN102254652B (en) | 2013-12-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971786A (en) * | 2013-12-27 | 2014-08-06 | 上海实业振泰化工有限公司 | Electric-grade organic coating high-temperature-resistant insulating magnesia powder for electric ovens and production method of electric-grade organic coating high-temperature-resistant insulating magnesia powder |
| CN105566950A (en) * | 2015-12-07 | 2016-05-11 | 上海实业振泰化工有限公司 | Preparation method of highly-voltage-withstanding high-temperature-resistant fused magnesium oxide |
| CN105869711A (en) * | 2016-06-17 | 2016-08-17 | 辽宁嘉顺化工科技有限公司 | Insulating layer material of iron disk electric heating element and preparation method of insulating layer material |
| CN107285346A (en) * | 2017-06-28 | 2017-10-24 | 王禹成 | A kind of modification fused magnesium oxide powder increased the service life and preparation method thereof |
| CN108219508A (en) * | 2018-02-07 | 2018-06-29 | 大石桥市美尔镁制品有限公司 | A kind of barrier material and its preparation method and application |
| CN108281217A (en) * | 2018-02-07 | 2018-07-13 | 大石桥市美尔镁制品有限公司 | A kind of magnesia powder insulating materials and preparation method thereof and a kind of flexible cable |
| CN108288528A (en) * | 2018-02-07 | 2018-07-17 | 大石桥市美尔镁制品有限公司 | A kind of magnesia powder insulating materials and a kind of flexible cable |
| CN108811203A (en) * | 2018-01-05 | 2018-11-13 | 上海实业振泰化工有限公司 | A kind of fused magnesium oxide |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083654A (en) * | 1993-01-07 | 1994-03-09 | 哈尔滨荣华家用电器器具厂 | High insulating anti-cementation electrothermal tube and manufacturing process thereof |
| US6236027B1 (en) * | 1999-03-26 | 2001-05-22 | Ibiden Co., Ltd. | Ceramic heater |
| CN1787699A (en) * | 2005-12-02 | 2006-06-14 | 萧鲲 | Vacuum high temp. electric heating pipe and product tech. thereof |
| CN101291553A (en) * | 2008-06-05 | 2008-10-22 | 九阳股份有限公司 | Composite electric heating tube |
| CN201298931Y (en) * | 2008-12-03 | 2009-08-26 | 江山热威金属制造有限公司 | Double-insulated electrothermal tube with double-layer bushing |
| CN101851767A (en) * | 2009-11-24 | 2010-10-06 | 中南大学 | Ceramic-base anode for molten salt electrolysis of metals and preparation and assembly method thereof |
-
2011
- 2011-04-20 CN CN2011100986854A patent/CN102254652B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083654A (en) * | 1993-01-07 | 1994-03-09 | 哈尔滨荣华家用电器器具厂 | High insulating anti-cementation electrothermal tube and manufacturing process thereof |
| US6236027B1 (en) * | 1999-03-26 | 2001-05-22 | Ibiden Co., Ltd. | Ceramic heater |
| CN1787699A (en) * | 2005-12-02 | 2006-06-14 | 萧鲲 | Vacuum high temp. electric heating pipe and product tech. thereof |
| CN101291553A (en) * | 2008-06-05 | 2008-10-22 | 九阳股份有限公司 | Composite electric heating tube |
| CN201298931Y (en) * | 2008-12-03 | 2009-08-26 | 江山热威金属制造有限公司 | Double-insulated electrothermal tube with double-layer bushing |
| CN101851767A (en) * | 2009-11-24 | 2010-10-06 | 中南大学 | Ceramic-base anode for molten salt electrolysis of metals and preparation and assembly method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971786A (en) * | 2013-12-27 | 2014-08-06 | 上海实业振泰化工有限公司 | Electric-grade organic coating high-temperature-resistant insulating magnesia powder for electric ovens and production method of electric-grade organic coating high-temperature-resistant insulating magnesia powder |
| CN103971786B (en) * | 2013-12-27 | 2017-01-25 | 上海实业振泰化工有限公司 | Electric-grade organic coating high-temperature-resistant insulating magnesia powder for electric ovens and production method of electric-grade organic coating high-temperature-resistant insulating magnesia powder |
| CN105566950A (en) * | 2015-12-07 | 2016-05-11 | 上海实业振泰化工有限公司 | Preparation method of highly-voltage-withstanding high-temperature-resistant fused magnesium oxide |
| CN105869711A (en) * | 2016-06-17 | 2016-08-17 | 辽宁嘉顺化工科技有限公司 | Insulating layer material of iron disk electric heating element and preparation method of insulating layer material |
| CN107285346A (en) * | 2017-06-28 | 2017-10-24 | 王禹成 | A kind of modification fused magnesium oxide powder increased the service life and preparation method thereof |
| CN107285346B (en) * | 2017-06-28 | 2019-07-16 | 王禹成 | A kind of modification fused magnesium oxide powder and preparation method thereof to prolong the service life |
| CN108811203A (en) * | 2018-01-05 | 2018-11-13 | 上海实业振泰化工有限公司 | A kind of fused magnesium oxide |
| CN108219508A (en) * | 2018-02-07 | 2018-06-29 | 大石桥市美尔镁制品有限公司 | A kind of barrier material and its preparation method and application |
| CN108281217A (en) * | 2018-02-07 | 2018-07-13 | 大石桥市美尔镁制品有限公司 | A kind of magnesia powder insulating materials and preparation method thereof and a kind of flexible cable |
| CN108288528A (en) * | 2018-02-07 | 2018-07-17 | 大石桥市美尔镁制品有限公司 | A kind of magnesia powder insulating materials and a kind of flexible cable |
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| CN102254652B (en) | 2013-12-11 |
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| ASS | Succession or assignment of patent right |
Owner name: DASHIQIAO MEIR MAGNESIUM PRODUCTS CO., LTD. Free format text: FORMER OWNER: JING WEI Effective date: 20120926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120926 Address after: 115100 Liaoning city of Dashiqiao province Shuangtaizi village Guan Tun Zhen Dashiqiao meire Magnesium Products Co. Ltd. Applicant after: Dashiqiao Meir Magnesium Products Co., Ltd. Address before: 115100, Dashiqiao, Liaoning Province town of Shuangtaizi village Dashiqiao beauty and magnesium products Co., Ltd. Applicant before: Jing Wei |
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