CN100390104C - Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn - Google Patents
Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn Download PDFInfo
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- CN100390104C CN100390104C CNB2005101042271A CN200510104227A CN100390104C CN 100390104 C CN100390104 C CN 100390104C CN B2005101042271 A CNB2005101042271 A CN B2005101042271A CN 200510104227 A CN200510104227 A CN 200510104227A CN 100390104 C CN100390104 C CN 100390104C
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Abstract
The present invention relates to a composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material and a preparation method thereof, which belongs to the technical field of heat insulating materials. The composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material is prepared from 40 to 65 weight portions of aluminum silicate fiber, 10 to 45 weight portions of potassium hexatitanate whisker, 5 to 20 weight portions of binding agent and 2 to 8 weight portions of auxiliary agent. The preparation method of the composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material comprises the following steps: aluminum silicate fiber is added into water and stirred into slurry; the potassium hexatitanate whisker, the binding agent and the auxiliary agent are added; floss is taken out, formed and baked to obtain the composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material. The heat insulating material of the present invention has the characteristic of low thermal conductivity. The thermal conductivity of the composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material is from 0.04 W/(m. K) to 0.09 W/(m. K) at the temperature of 200 to 800 DEG C. The composite heat insulating aluminum silicate fiber/potassium hexatitanate whisker material can be used as the temperature of 1200 DEG C.
Description
(1) technical field
The present invention relates to a kind of lower thermal conductivity aluminum silicate fiber/crystal whisker of hexa potassium titanate combined high temperature lagging material and preparation method thereof, belong to the lagging material technical field.
(2) background technology
Along with the development of super speed vehicle and the contour technical equipment of 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, the lagging material for many industrial equipmentss employing lower thermal conductivities also will improve Working environment, and save energy reduces consuming.
At present, mainly be the alumina-silicate ceramic fibre goods at the fiber-like lagging material of 1200 ℃ of uses, comprise cellucotton, fibrefelt, tapetum fibrosum, fibrous paper, fiber rope etc.The characteristics of this class material are to have stable heat-proof quality and chemerosiveness resistent.Yet the thermal conductivity of aluminum silicate fibre product is higher relatively, can not satisfy the requirement of many application scenarios.
(3) summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of aluminum silicate fiber/crystal whisker of hexa potassium titanate composite heat-insulated material and preparation method thereof is provided, make a kind of combined high temperature lagging material of lower thermal conductivity.
The component of composite heat-insulated material of the present invention is as follows: 40～65 parts of aluminum silicate fibers, and 10～45 parts of crystal whisker of hexa potassium titanate, 5～20 parts of wedding agents, 2～8 parts of auxiliary agents are weight part.
Above-mentioned aluminum silicate fiber is an aluminosilicate fiber cotton, Fibre diameter 2～4 μ m, and long 30～80 μ m, the composition of aluminum silicate fiber is divided into: Al
2O
338～50%, SiO
249～61%, Fe
2O
3＜0.8%, (K
2O+Na
2O)＜0.5%, all be weight percentage.
The diameter of above-mentioned crystal whisker of hexa potassium titanate is 2～4 μ m, and length-to-diameter ratio is 10～20.
Described wedding agent is selected from one or more in silicon sol, starch or the polyvinyl alcohol.
Described auxiliary agent is one or both in polymerize aluminum chloride or the acid amides.
Aluminum silicate fiber of the present invention/crystal whisker of hexa potassium titanate composite heat-insulated material preparation method, step is as follows:
1, aluminum silicate fiber is added in the entry, stir, form slurry.
2, add crystal whisker of hexa potassium titanate, when stirring, add wedding agent, auxiliary agent successively.Slurry forms floss gradually.When liquid in the slurry is become when limpid by muddiness, illustrate that crystal whisker of hexa potassium titanate is attached to fiber surface.Floss is ferreted out.
3, with the floss moulding that is ferreted out, oven dry can make aluminum silicate fiber/crystal whisker of hexa potassium titanate composite heat-insulated material.
Above-mentioned moulding can be selected template, piece type as required, makes composite heat-insulated material fiberboard or composite heat-insulated material fiber block.
The present invention utilizes six potassium titanate lower thermal conductivities and has negative temperature coefficient and the characteristic of high infrared reflection, is compounded to form the combined high temperature lagging material of lower thermal conductivity with aluminum silicate fiber.The lower thermal conductivity characteristic of lagging material of the present invention realizes by adding crystal whisker of hexa potassium titanate, lower thermal conductivity combined high temperature lagging material of the present invention is to be base material with the aluminum silicate fiber, with the crystal whisker of hexa potassium titanate is additive, by adding wedding agent and auxiliary agent, pass through slurrying, join operations such as slurry, moulding, oven dry, the lagging material of making.Compared with prior art, lagging material of the present invention has the characteristics of lower thermal conductivity, is 0.04～0.09W/ (m.K) 200～800 ℃ thermal conductivities, can use down at 1200 ℃.
(4) embodiment
The invention will be further described below in conjunction with embodiment, but be not limited thereto.
Embodiment 1: a kind of component of lower thermal conductivity combined high temperature lagging material is as follows, is weight part:
50 parts of aluminum silicate fibers, 30 parts of crystal whisker of hexa potassium titanate, 12 parts of starch, 2 parts of polyvinyl alcohol, 3 parts of polymerize aluminum chlorides, 3 parts of acid amides.
Described aluminum silicate fiber is an aluminosilicate fiber cotton, Fibre diameter 2～4 μ m, and long 30～80 μ m, the composition of aluminum silicate fiber is divided into: Al
2O
338～50%, SiO
248～62%, Fe
2O
3＜0.8%, (K
2O+Na
2O)＜0.5%, all be weight percentage.
The diameter of described crystal whisker of hexa potassium titanate is 2～4 μ m, and length-to-diameter ratio is 10～20.
The preparation method is as follows:
50 parts of aluminosilicate fiber cottons are joined in 200 parts of water, stir, form slurry.Subsequently, add 30 parts of crystal whisker of hexa potassium titanate, when stirring, add 2 parts of 12 parts of starch and polyvinyl alcohol one by one, 3 parts of polymerize aluminum chlorides, 3 parts of acid amides.Liquid is become when limpid by muddiness in slurry, and floss is ferreted out, and moulding in 60～80 ℃ of oven dry, makes aluminum silicate fiber/crystal whisker of hexa potassium titanate Combined thermal insulative panel.
800 ℃ of thermal conductivities of this Combined thermal insulative panel are 0.072W/ (m.K).
Embodiment 2: as described in embodiment 1, different is that component is as follows, is weight part:
60 parts of aluminum silicate fibers, 40 parts of crystal whisker of hexa potassium titanate, 8 parts of silicon sol, 10 parts of starch, 2 parts of polyvinyl alcohol, 4 parts of polymerize aluminum chlorides, 3 parts of acid amides.
The preparation method is with embodiment 1, and silicon sol joins in the slurry before starch and polyvinyl alcohol adding.The gained Combined thermal insulative panel has higher intensity, and 800 ℃ of thermal conductivities are 0.078W/ (m.K).
Embodiment 3: as described in embodiment 1, different is that component is as follows, is weight part:
40 parts of aluminum silicate fibers, 10 parts of crystal whisker of hexa potassium titanate, 6 parts of silicon sol, 8 parts of starch, 5 parts of polymerize aluminum chlorides.800 ℃ of thermal conductivities of gained composite heat-insulated material are 0.070W/ (m.K).
Claims (4)
1. composite heat-insulated material is characterized in that component is: 40～65 parts of aluminum silicate fibers, and 10～45 parts of crystal whisker of hexa potassium titanate, 5～20 parts of wedding agents, 2～8 parts of auxiliary agents are weight part;
Described wedding agent is selected from one or more in silicon sol, starch or the polyvinyl alcohol;
Described auxiliary agent is one or both in polymerize aluminum chloride or the acid amides.
2. composite heat-insulated material as claimed in claim 1 is characterized in that described aluminum silicate fiber is an aluminosilicate fiber cotton, Fibre diameter 2～4 μ m, and long 30～80 μ m, the composition of aluminum silicate fiber is divided into: Al
2O
338～50%, SiO
248～60%, Fe
2O
3＜0.8%, (K
2O+Na
2O)＜0.5%, all be weight percentage.
3. composite heat-insulated material as claimed in claim 1, the diameter that it is characterized in that described crystal whisker of hexa potassium titanate are 2～4 μ m, and length-to-diameter ratio is 10～20.
4. the preparation method of the described composite heat-insulated material of claim 1, step is as follows:
(1) aluminum silicate fiber is added in the entry, stir, form slurry;
(2) add crystal whisker of hexa potassium titanate, when stirring, add wedding agent and auxiliary agent successively,, floss is ferreted out when liquid in the slurry is become when limpid by muddiness;
(3) with the floss moulding that is ferreted out, oven dry can make aluminum silicate fiber/crystal whisker of hexa potassium titanate composite heat-insulated material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042271A CN100390104C (en) | 2005-10-11 | 2005-10-11 | Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042271A CN100390104C (en) | 2005-10-11 | 2005-10-11 | Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1772712A CN1772712A (en) | 2006-05-17 |
| CN100390104C true CN100390104C (en) | 2008-05-28 |
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| CNB2005101042271A Expired - Fee Related CN100390104C (en) | 2005-10-11 | 2005-10-11 | Composite heat insulating aluminium silicate fiber/potassium hexatitanate whisker material and its prepn |
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Families Citing this family (11)
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| CN101302091B (en) * | 2008-05-19 | 2010-12-15 | 武汉理工大学 | Nano-hole silica composite heat insulation material and preparation thereof |
| CN101456720B (en) * | 2009-01-08 | 2011-09-28 | 东莞市康达机电工程有限公司 | Method for preparing potassium hexatitanate whisker composite SiO2 aerogel heat insulating material |
| CN101723692B (en) * | 2009-11-23 | 2012-06-27 | 上海国科化工新材料有限公司 | High strength nanophase ceramic composite insulation material and preparation method thereof |
| CN101723707B (en) * | 2009-11-24 | 2012-12-26 | 南京工业大学 | Method for preparing high-temperature resistant anti-infrared thermal radiation energy-saving coating |
| CN102627460B (en) * | 2010-11-25 | 2014-07-02 | 上海秀普复合材料有限公司 | Manufacturing method of potassium hexatitanate whisker high-temperature thermal insulation material |
| CN105481297A (en) * | 2014-09-19 | 2016-04-13 | 杨素美 | Composite high-temperature heat-insulating material with low heat conductivity and preparation method for composite insulating material |
| CN106587901B (en) * | 2016-11-30 | 2019-02-01 | 山东工业陶瓷研究设计院有限公司 | The preparation method of high temperature resistance and high strength rigidity heat-barrier material |
| CN107244872A (en) * | 2017-05-12 | 2017-10-13 | 成都市容德建筑劳务有限公司 | A kind of construction material of light pollution preventive |
| CN107162559A (en) * | 2017-06-16 | 2017-09-15 | 成都市容德建筑劳务有限公司 | A kind of mixed mud of heat-insulating |
| 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 |
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2005
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