CN105481297A - Composite high-temperature heat-insulating material with low heat conductivity and preparation method for composite insulating material - Google Patents
Composite high-temperature heat-insulating material with low heat conductivity and preparation method for composite insulating material Download PDFInfo
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- CN105481297A CN105481297A CN201410482646.8A CN201410482646A CN105481297A CN 105481297 A CN105481297 A CN 105481297A CN 201410482646 A CN201410482646 A CN 201410482646A CN 105481297 A CN105481297 A CN 105481297A
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Abstract
The invention relates to a composite high-temperature heat-insulating material with low heat conductivity and a preparation method for the composite high-temperature heat-insulating material. The composite high-temperature heat-insulating material with low heat conductivity comprises the following raw materials in parts by mass: 40-65 parts of aluminum silicate fiber, 30-50 parts of silicon dioxide powder, 10-40 parts of potassium hexatitanate whiskers, 5-20 parts of a binding agent and 2-8 parts of an auxiliary agent. The preparation method comprises the steps of: adding aluminum silicate fiber cotton and silicon dioxide powder into water, and stirring the mixture to form slurry; then adding the potassium hexatitanate whiskers, and successively adding the binding agent and the auxiliary agent while stirring; when liquid in the slurry turns clear from turbidity, fishing out floccules, and moulding and drying the floccules to obtain the composite high-temperature heat-insulating material. The heat conductivity of the composite high-temperature heat-insulating material is 0.04-0.09 W/(m.K), and the composite high-temperature heat-insulating material can be used at 1200 DEG C.
Description
Technical field
Combined high temperature lagging material that the present invention relates to a kind of lower thermal conductivity and preparation method thereof, belongs to lagging material technical field.
Background technology
Along with the development of the high tech equipment such as super speed vehicle and high-power engine, heat-insulating problem more and more becomes the focus that people pay close attention to, and also becomes one of key factor of restriction high-tech equipment development.On the other hand, many industrial equipmentss are adopted to the lagging material of lower thermal conductivity, also will improve Working environment, save energy, reduce and consume.
CN103896621A provides a kind of gas phase nano SiO
2-Al
2o
3composite mesopore lagging material and preparation method thereof, it is prepared from by the component of following mass percent: gas phase nano silicon-dioxide powdery 10 ~ 70%, gas phase nano alumina powder jointed 10 ~ 70%, fortifying fibre 3 ~ 10%, infrared screening agent 8 ~ 20%, mineral filler 3 ~ 7%, the summation of above-mentioned each constituent mass per-cent is 100%.Above-mentioned material is put into Hermetical stirring device, adopts dry method high-speed stirring that the mixture in Hermetical stirring device is uniformly dispersed, be molded into the moulded products of different shape by machinery.Gas phase nano SiO of the present invention
2-Al
2o
3composite mesopore lagging material has lightweight, high temperature resistant, lower thermal conductivity, high strength, higher temperature line shrinking percentage are little and the advantage of high-temperature stability.But the method composition is many, preparation complicated, and resulting materials is not high temperature resistant, cannot realize the stable use under 1200 DEG C of environment.
At present, at the fiber-like lagging material mainly alumina-silicate ceramic fibre goods that 1200 DEG C use, cellucotton, fibrefelt, tapetum fibrosum, fibrous paper, fiber rope etc. are comprised.The feature of this kind of material has stable heat-proof quality and chemerosiveness resistent.But the thermal conductivity of aluminum silicate fibre product is relatively high, the requirement of many application scenarios to lower thermal conductivity can not be met.
Summary of the invention
Combined high temperature lagging material that the invention provides a kind of lower thermal conductivity and preparation method thereof.
Lower thermal conductivity combined high temperature lagging material of the present invention is for base material with aluminum silicate fiber, silicon-dioxide powdery, take crystal whisker of hexa potassium titanate as additive, by adding bonding agent and auxiliary agent, through operations such as slurrying, with slurry, shaping, oven dry, the lagging material made.
Technical scheme of the present invention is as follows:
A combined high temperature lagging material for lower thermal conductivity, raw materials quality number is: aluminum silicate fiber 40 ~ 65 parts, silicon-dioxide powdery 30 ~ 50 parts, crystal whisker of hexa potassium titanate 10 ~ 40 parts, bonding agent 5 ~ 20 parts, auxiliary agent 2 ~ 8 parts.
Aluminum silicate fiber in above-mentioned lower thermal conductivity combined high temperature lagging material is aluminosilicate fiber cotton, and its chemical composition range is: Al
2o
346 ~ 52%, SiO
265 ~ 76%, Fe
2o
3<0.8%, (K
2o+Na
2o) <0.5%.Fibre diameter 2 ~ 4
μm, long 30 ~ 80
μm.
Silicon-dioxide powdery in above-mentioned lower thermal conductivity combined high temperature lagging material is nano level.
Crystal whisker of hexa potassium titanate in above-mentioned lower thermal conductivity combined high temperature lagging material, diameter is 2 ~ 4 μm, and length-to-diameter ratio is 10 ~ 30.
Described bonding agent is one or more in silicon sol or starch.
Described auxiliary agent is polymerize aluminum chloride.
Preferred according to the present invention, a kind of combined high temperature lagging material of lower thermal conductivity, raw materials quality number is: aluminum silicate fiber 50 ~ 60 parts, silicon-dioxide powdery 30 ~ 40 parts, crystal whisker of hexa potassium titanate 10 ~ 30 parts, bonding agent 5 ~ 10 parts, auxiliary agent 3 ~ 4 parts.
The feature of lower thermal conductivity combined high temperature lagging material of the present invention is that the thermal conductivity of 200 ~ 800 DEG C is 0.04 ~ 0.09W/ (m.K); Lower thermal conductivity high temperature fiber composite heat-insulated material of the present invention can use at 1200 DEG C.
Lower thermal conductivity combined high temperature lagging material preparation method of the present invention, step is as follows:
(1) aluminosilicate fiber cotton, silicon-dioxide powdery are added to the water, stir, form slurry; Then,
(2) add crystal whisker of hexa potassium titanate, while stirring, successively add bonding agent and auxiliary agent;
(3) when liquid in slurry becomes limpid from muddiness, floss is ferreted out, shaping, dry, can composite heat-insulated material be obtained.
Different according to forming method, composite heat-insulated material fiberboard can be prepared or make block materials.
The present invention utilizes potassium hexatitanate lower thermal conductivity and has the characteristic of negative temperature coefficient and high infrared reflection, is compounded to form the combined high temperature lagging material of lower thermal conductivity with aluminum silicate fiber, silicon-dioxide powdery.
Compared with prior art, lagging material of the present invention has the feature of lower thermal conductivity.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but be not limited thereto.
Raw material dosage in embodiment is mass parts.
Raw material in embodiment all can be bought in market.
Embodiment 1:
A kind of lower thermal conductivity combined high temperature lagging material, composition of raw materials (mass parts) consists of: aluminum silicate fiber 50 parts, silicon-dioxide powdery 30 parts, crystal whisker of hexa potassium titanate 20 parts, starch 10 parts, polymerize aluminum chloride 3 parts.
Technology of preparing is as follows:
50 parts of aluminosilicate fiber cottons, silicon-dioxide powdery 20 parts are joined in 200 parts of water, stirs, form slurry.Subsequently, add 30 parts of crystal whisker of hexa potassium titanate, while stirring, successively add starch 12 parts, polymerize aluminum chloride 3 parts.When liquid becomes limpid from muddiness in the slurry, illustrate that crystal whisker of hexa potassium titanate, silicon-dioxide powdery have been attached to aluminum silicate fiber surface; Floss is ferreted out, shaping, in 60 ~ 80 DEG C of oven dry, obtained lower thermal conductivity Combined thermal insulative panel.
This Combined thermal insulative panel 800 DEG C of thermal conductivities are 0.072W/ (m.K).
Embodiment 2:
As described in Example 1, difference additionally adds 8 parts of silicon sol again.Silicon sol joins in slurry before starch adds.Combined thermal insulative panel has higher intensity, and 800 DEG C of thermal conductivities are 0.078W/ (m.K).
Embodiment 3:
A kind of formula of lower thermal conductivity combined high temperature lagging material consists of: aluminum silicate fiber 60 parts, silicon-dioxide powdery 40 parts, crystal whisker of hexa potassium titanate 30 parts, starch 4 parts, silicon sol 6 parts, polymerize aluminum chloride 3 parts.
Preparation method is with embodiment 1.
Claims (8)
1. a combined high temperature lagging material for lower thermal conductivity, raw materials quality number is: aluminum silicate fiber 40 ~ 65 parts, silicon-dioxide powdery 30 ~ 50 parts, crystal whisker of hexa potassium titanate 10 ~ 40 parts, bonding agent 5 ~ 20 parts, auxiliary agent 2 ~ 8 parts.
2. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, it is characterized in that the aluminum silicate fiber in above-mentioned lower thermal conductivity combined high temperature lagging material is aluminosilicate fiber cotton, its chemical composition range is: Al
2o
346 ~ 52%, SiO
265 ~ 76%, Fe
2o
3<0.8%, (K
2o+Na
2o) <0.5%; Fibre diameter 2 ~ 4 μm, long 30 ~ 80 μm.
3. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, it is characterized in that crystal whisker of hexa potassium titanate, diameter is 2 ~ 4 μm, and length-to-diameter ratio is 10 ~ 30.
4. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, is characterized in that described bonding agent is one or more in silicon sol or starch.
5. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, is characterized in that described auxiliary agent is polymerize aluminum chloride.
6. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, is characterized in that raw materials quality number is: aluminum silicate fiber 50 ~ 60 parts, silicon-dioxide powdery 30 ~ 40 parts, crystal whisker of hexa potassium titanate 10 ~ 30 parts, bonding agent 5 ~ 10 parts, auxiliary agent 3 ~ 4 parts.
7. the combined high temperature lagging material of lower thermal conductivity as claimed in claim 1, is characterized in that the thermal conductivity of 200 ~ 800 DEG C, combined high temperature lagging material is 0.04 ~ 0.09W/ (m.K); Use at 1200 DEG C.
8. lower thermal conductivity combined high temperature lagging material preparation method as claimed in claim 1, step is as follows:
(1) aluminosilicate fiber cotton, silicon-dioxide powdery are added to the water, stir, form slurry; Then,
(2) add crystal whisker of hexa potassium titanate, while stirring, successively add bonding agent and auxiliary agent;
(3) when liquid in slurry becomes limpid from muddiness, floss is ferreted out, shaping, dry, to obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482646.8A CN105481297A (en) | 2014-09-19 | 2014-09-19 | Composite high-temperature heat-insulating material with low heat conductivity and preparation method for composite insulating material |
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|---|---|---|---|
| CN201410482646.8A CN105481297A (en) | 2014-09-19 | 2014-09-19 | Composite high-temperature heat-insulating material with low heat conductivity and preparation method for composite insulating material |
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Family
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194649A (en) * | 2019-06-24 | 2019-09-03 | 广州晖能环保材料有限公司 | Aluminium oxide nano heat-barrier material and preparation method thereof |
| CN110512460A (en) * | 2019-08-28 | 2019-11-29 | 苏州宏久航空防热材料科技有限公司 | A kind of high reflection radiation resistance fibrous insulating material |
| CN114105604A (en) * | 2021-12-09 | 2022-03-01 | 佛山索弗克氢能源有限公司 | Heat insulating material and preparation method thereof |
| CN114195432A (en) * | 2021-12-17 | 2022-03-18 | 江苏华风新材料科技有限公司 | Inorganic silicon crystal plate and manufacturing method thereof |
| CN114804900A (en) * | 2022-05-10 | 2022-07-29 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of accident fault-tolerant efficient heat-insulating material for ladle metallurgy |
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|---|---|---|---|---|
| EP0340707B1 (en) * | 1988-05-03 | 1992-08-19 | BASF Aktiengesellschaft | Insulating material with a density of 0,1 to 0,4 g/cm3 |
| CN1772712A (en) * | 2005-10-11 | 2006-05-17 | 山东大学 | Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn |
| CN101302091A (en) * | 2008-05-19 | 2008-11-12 | 武汉理工大学 | Nano-hole silica composite heat insulation material and preparation thereof |
| CN103011714A (en) * | 2013-01-04 | 2013-04-03 | 哈尔滨工程大学 | Aluminum silicate fiber and aerogel powder composite heat-insulating material and preparation method thereof |
| CN103896621A (en) * | 2014-02-27 | 2014-07-02 | 广州吉必盛科技实业有限公司 | Gas-phase nano SiO2-Al2O3 composite mesoporous heat insulation material and preparation method thereof |
-
2014
- 2014-09-19 CN CN201410482646.8A patent/CN105481297A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0340707B1 (en) * | 1988-05-03 | 1992-08-19 | BASF Aktiengesellschaft | Insulating material with a density of 0,1 to 0,4 g/cm3 |
| CN1772712A (en) * | 2005-10-11 | 2006-05-17 | 山东大学 | Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn |
| CN101302091A (en) * | 2008-05-19 | 2008-11-12 | 武汉理工大学 | Nano-hole silica composite heat insulation material and preparation thereof |
| CN103011714A (en) * | 2013-01-04 | 2013-04-03 | 哈尔滨工程大学 | Aluminum silicate fiber and aerogel powder composite heat-insulating material and preparation method thereof |
| CN103896621A (en) * | 2014-02-27 | 2014-07-02 | 广州吉必盛科技实业有限公司 | Gas-phase nano SiO2-Al2O3 composite mesoporous heat insulation material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194649A (en) * | 2019-06-24 | 2019-09-03 | 广州晖能环保材料有限公司 | Aluminium oxide nano heat-barrier material and preparation method thereof |
| CN110512460A (en) * | 2019-08-28 | 2019-11-29 | 苏州宏久航空防热材料科技有限公司 | A kind of high reflection radiation resistance fibrous insulating material |
| CN114105604A (en) * | 2021-12-09 | 2022-03-01 | 佛山索弗克氢能源有限公司 | Heat insulating material and preparation method thereof |
| CN114195432A (en) * | 2021-12-17 | 2022-03-18 | 江苏华风新材料科技有限公司 | Inorganic silicon crystal plate and manufacturing method thereof |
| CN114804900A (en) * | 2022-05-10 | 2022-07-29 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of accident fault-tolerant efficient heat-insulating material for ladle metallurgy |
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Application publication date: 20160413 |
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