CN105541313A - Nano heat-insulating material and preparation method of nano heat-insulating board - Google Patents
Nano heat-insulating material and preparation method of nano heat-insulating board Download PDFInfo
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
The invention relates to a nano heat-insulating material and a preparation method of a nano heat-insulating board. The nano heat-insulating material has the characteristics of high temperature resistance, high heat stability in the medium/high-temperature state, low thermal conductivity and low cost. The preparation method provided by the invention has the advantages of accessible raw materials, simple technique and convenient preparation process. The technical scheme is as follows: the nano heat-insulating material is prepared from common silicon micropowder, white carbon black, refractory fibers, an organic adhesive and water. The preparation method of the nano heat-insulating board sequentially comprises the following steps: preparing the following raw materials: common silicon micropowder, white carbon black, refractory fibers, organic adhesive and water; 1. crushing the refractory fibers for later use; 2. preparing the organic adhesive liquid for later use; 3. mixing the crushed refractory fibers, common silicon micropowder and white carbon black, and stirring for 20-30 minutes to obtain a mixture; 4. preparing the nano heat-insulating board with different specifications; 5. spraying the organic adhesive liquid onto the external surface of the nano heat-insulating board; 6. drying; and 7. cooling and packaging.
Description
Technical field
The present invention relates to the middle high-temperature field of the industrial trades such as metallurgy, building materials, chemical industry, thermoelectricity, specifically a kind of high temperature resistant heat-insulating material and preparation method thereof.
Background technology
High performance heat-insulating material has great importance for the energy-saving and cost-reducing of industrial circle, particularly high temperature (500 ~ 1000 DEG C) highly energy-consuming field in metallurgy, building materials, chemical industry, thermoelectricity etc.High performance heat-insulating material is used at middle high-temperature field, effectively will improve energy utilization rate, but this lagging material is except must possessing ultralow thermal conductivity, the stability of life-time service under certain physical strength and high temperature also should be possessed, and lower cost.The lagging material used at present is not poor-performing, is exactly that cost is higher, cannot meets the industrial requirement of a large amount of middle high-temperature fields.
SILICA FUME is the SiO produced when smelting ferrosilicon or industrial silicon
2with the dioxygen oxidation in Si gas and air and condensation and the ultra-fine siliceous powder body material of one formed.SILICA FUME median size is 0.15-0.20 μm, and specific surface area is 15000-20000m
2/ kg.Its main component is silicon-dioxide, and the general 80-92% of content, impurity component has sodium oxide, calcium oxide, magnesium oxide, ferric oxide, aluminum oxide and gac etc.Because silicon-dioxide in SILICA FUME belongs to unformed material, active high, particle is tiny, and specific surface area is large, there is excellent physicochemical property, be considered to a kind of trade waste in the past, can be widely used in now the key areas such as concrete, refractory materials, cement used in special engineering, but due to Market Reasons, application quantity is limited, and in adiabatic heat-insulation field, also have and very large utilize space, and comprehensive cost is lower.
Summary of the invention
The object of the invention is the deficiency overcoming above-mentioned background technology, provide a kind of nano heat insulating material and preparation method thereof, this material should have Heat stability is good under high temperature resistant, the middle condition of high temperature, thermal conductivity is low and cost is low feature; Should draw materials facility, technique of the preparation method provided is simple, easy to prepare.
Technical scheme provided by the invention is: a kind of nano heat insulating material, and included raw material and weight part are: common SILICA FUME 75 ~ 85, white carbon black 0 ~ 20, refractory fibre 10 ~ 20, organic gel 0.5 ~ 0.8, water 1.5 ~ 2.5.
Described refractory fibre is preferably one or more in aluminum silicate fiber, polycrystalline alumina fiber or polycrystalline mullite fibre.
Described organic gel is preferably acetate ethylene copolymer sizing agent DA102H.
Described white carbon black is preferably aerosil.
A preparation method for nano-thermal-insulating plate, comprises the following steps successively:
(1) raw material of following weight part is prepared: common SILICA FUME 75 ~ 85, white carbon black 0 ~ 20, refractory fibre 10 ~ 20, organic gel 0.5 ~ 0.8, water 1.5 ~ 2.5;
(2) for subsequent use after refractory fibre being carried out break process;
(3) organic gel and water mix and blend are made organic glue for subsequent use;
(4) stir after the refractory fibre after fragmentation, common SILICA FUME, white carbon black mixing 20 ~ 30 minutes, obtain compound;
(5) obtained compound is put into mould briquetting, make the nano-thermal-insulating plate of different size;
(6) organic glue is sprayed onto nano-thermal-insulating plate outside surface;
(7) dry at 70 ~ 90 DEG C of temperature;
(8) cooling packing.
Described refractory fibre is preferably one or more in aluminum silicate fiber, polycrystalline alumina fiber or polycrystalline mullite fibre.
Described organic gel is preferably acetate ethylene copolymer sizing agent DA102H.
Described white carbon black is preferably aerosil.
The density of described nano-thermal-insulating plate is 350 ~ 650kg/m
3refractoriness is 1540 DEG C, cold crushing strength is 1.2 ~ 1.4MPa, linear shrinkage ratio 1.1% (1000 DEG C), thermal conductivity is 0.02 ~ 0.029W/m ﹒ K (600 DEG C), 0.021 ~ 0.04W/m ﹒ K (800 DEG C), 0.023 ~ 0.048W/m ﹒ K (1000 DEG C).
The invention has the beneficial effects as follows: the heat preservation principle of nano heat insulating material belongs to nanoaperture mechanism to have and exceed conventional traditional material 2-6 Superstrong heat-preserving doubly and to break heat energy power.Time more than 500 DEG C, temperature is higher, and nano heat insulating material will exceed 3 ~ 5 times than conventional heat insulation and preservation effect.Its nano level void network structure and thermal boundary composition have not only stopped transmission of heat by convection, and significantly reduce solid state heat conductivity and the high temperature heat radiation of material, can significantly reduce thermal insulation layer thickness, can life-time service temperature be 600 ~ 1000 DEG C.Use this 10MM thick material to be equivalent to conventional insulation product 30 ~ 60mm, effective working capacity that can improve equipment or pipeline can reduce a large amount of thermosteresis again.Main raw due to nano heat insulating material of the present invention is smelting by-product product SILICA FUME, and the nano-thermal-insulating plate cost made by it is low, thermal conductivity is low, Heat stability is good, and middle high-temperature field especially, has very large advantage.Therefore improving heat energy efficiency, the field such as exploitation that realizes energy-saving and cost-reducing, energy-conserving product has great using value.
Embodiment
Elaborate to the present invention below in conjunction with embodiment, its object is only better to understand content of the present invention.Therefore, the cited case does not limit the scope of the invention.
Embodiment 1
After the aluminum silicate fiber break process of 16.7 weight parts, stir after mixing with the common SILICA FUME of 83.3 weight parts, stir and inject mould briquette forming after 20 ~ 30 minutes, make nano-thermal-insulating plate, length and width are thick is of a size of 180 × 200 × 60mm; The acetate ethylene copolymer sizing agent DA102H of 0.5 weight part is become glue with the water concocting of 1.5 weight parts; Glue is sprayed to nano-thermal-insulating plate outside surface, and pack carry out Drying and cooling at 70 DEG C of temperature after, make nano-thermal-insulating plate A.
The density of nano-thermal-insulating plate A is 600kg/m
3, cold crushing strength is 1.4MPa, linear shrinkage ratio 1.1% (1000 DEG C), and thermal conductivity is 0.029W/m ﹒ K (600 DEG C), 0.04W/m ﹒ K (800 DEG C), 0.048W/m ﹒ K (1000 DEG C).
Cement mill high temperature tertiary air pipeline is applied the nano-thermal-insulating plate that the present embodiment provides, insulation design adopts 100mm mould material+60mm nano-thermal-insulating plate+10mm steel plate, in pipeline within the scope of hot blast temperature 900 ~ 1100 DEG C, pipeline external surface temperature is all lower than 50 DEG C, operating performance is good, can ensure steady in a long-term operation.
Embodiment 2
By the aluminum silicate fiber of 11.5 weight parts, 5 weight part polycrystalline mullite fibre break process, stir after mixing with the common SILICA FUME of 68.5 weight parts, the aerosil of 15 weight parts, stir and inject mould briquette forming after 20 ~ 30 minutes, make nano-thermal-insulating plate, length and width are thick is of a size of 180 × 200 × 40mm; The acetate ethylene copolymer sizing agent DA102H of 0.5 weight part and 1.5 weight parts waters are mixed into glue; Glue is sprayed to nano-thermal-insulating plate outside surface, and pack carry out Drying and cooling at 90 DEG C of temperature after, make nano-thermal-insulating plate B.
The density of nano-thermal-insulating plate B is 400kg/m
3, cold crushing strength is 1.2MPa, linear shrinkage ratio 1.1% (1000 DEG C), and thermal conductivity is 0.022W/m ﹒ K (600 DEG C), 0.25W/m ﹒ K (800 DEG C), 0.028W/m ﹒ K (1000 DEG C).
The high-temp waste gas pipeline of cement mill AQC waste heat boiler is applied the nano-thermal-insulating plate that the present embodiment provides, by the common calcium silicate board of former insulation design 100mm mould material+50mm+10mm steel plate+200mm rock wool, change 100mm mould material+40mm nano-thermal-insulating plate+10mm steel plate into, temperature in exhaust pipeline is within the scope of 400 ~ 600 DEG C, exhaust pipeline hull-skin temperature is all lower than 50 DEG C, heat insulation effect is good, and add useful volume, comprehensive cost is lower.
Claims (8)
1. a nano heat insulating material, included raw material and weight part are: common SILICA FUME 75 ~ 85, white carbon black 0 ~ 20, refractory fibre 10 ~ 20, organic gel 0.5 ~ 0.8, water 1.5 ~ 2.5.
2. nano heat insulating material according to claim 1, is characterized in that: described refractory fibre is one or more in aluminum silicate fiber, polycrystalline alumina fiber or polycrystalline mullite fibre.
3. nano heat insulating material according to claim 1, is characterized in that: described organic gel is acetate ethylene copolymer sizing agent DA102H.
4. nano heat insulating material according to claim 1, is characterized in that: described white carbon black is aerosil.
5. a preparation method for nano-thermal-insulating plate, comprises the following steps successively:
(1) raw material of following weight part is prepared: common SILICA FUME 75 ~ 85, white carbon black 0 ~ 20, refractory fibre 10 ~ 20, organic gel 0.5 ~ 0.8, water 1.5 ~ 2.5;
(2) for subsequent use after refractory fibre being carried out break process;
(3) organic gel and water mix and blend are made organic glue for subsequent use;
(4) stir after the refractory fibre after fragmentation, common SILICA FUME, white carbon black mixing 20 ~ 30 minutes, obtain compound;
(5) obtained compound is put into mould briquetting, make the nano-thermal-insulating plate of different size;
(6) organic glue is sprayed onto nano-thermal-insulating plate outside surface;
(7) dry at 70 ~ 90 DEG C of temperature;
(8) cooling packing.
6. the preparation method of nano heat insulating material according to claim 5, is characterized in that: described refractory fibre is one or more in aluminum silicate fiber, polycrystalline alumina fiber or polycrystalline mullite fibre.
7. the preparation method of nano heat insulating material according to claim 5, is characterized in that: described organic gel is acetate ethylene copolymer sizing agent DA102H.
8. the preparation method of nano heat insulating material according to claim 5, is characterized in that: described white carbon black is aerosil.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972388A (en) * | 2016-06-25 | 2016-09-28 | 常州腾拓机械设备有限公司 | Nano micropore insulation board production line |
| CN107253863A (en) * | 2017-07-26 | 2017-10-17 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of light heat-insulating material of silicon oxide-containing micro mist |
| CN107512917A (en) * | 2017-08-24 | 2017-12-26 | 浙江科屹耐火材料有限公司 | A kind of flame-retardant fibre board |
| CN108298995A (en) * | 2018-01-29 | 2018-07-20 | 偃师市三合绝热科技有限公司 | A kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof |
| CN111662089A (en) * | 2020-07-05 | 2020-09-15 | 郑州瑞泰耐火科技有限公司 | High-temperature-resistant self-sintered nano plate and preparation method thereof |
| CN111732392A (en) * | 2020-07-05 | 2020-10-02 | 郑州瑞泰耐火科技有限公司 | High-strength nano plate and preparation method thereof |
| CN112266215A (en) * | 2020-10-30 | 2021-01-26 | 深圳市鑫富达电器有限公司 | Heat insulation material composition, heat insulation ring, preparation method of heat insulation ring and cooking appliance |
| CN112679140A (en) * | 2020-12-18 | 2021-04-20 | 江苏山由帝奥节能新材股份有限公司 | Nano modified glass fiber composite core material and preparation method thereof |
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| CN101671157A (en) * | 2009-09-22 | 2010-03-17 | 中国人民解放军海军工程大学 | High-efficiency insulating material used for high-temperature pipeline and preparation method thereof |
| CN103848591A (en) * | 2012-12-05 | 2014-06-11 | 佛山市顺德区恒铕材料科技有限公司 | Chopped inorganic fiber-reinforced thermal insulation plate |
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Patent Citations (3)
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| CN101671157A (en) * | 2009-09-22 | 2010-03-17 | 中国人民解放军海军工程大学 | High-efficiency insulating material used for high-temperature pipeline and preparation method thereof |
| CN103848591A (en) * | 2012-12-05 | 2014-06-11 | 佛山市顺德区恒铕材料科技有限公司 | Chopped inorganic fiber-reinforced thermal insulation plate |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972388A (en) * | 2016-06-25 | 2016-09-28 | 常州腾拓机械设备有限公司 | Nano micropore insulation board production line |
| CN107253863A (en) * | 2017-07-26 | 2017-10-17 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of light heat-insulating material of silicon oxide-containing micro mist |
| CN107253863B (en) * | 2017-07-26 | 2020-06-19 | 中钢集团洛阳耐火材料研究院有限公司 | Light heat-insulating material containing silica micropowder |
| CN107512917A (en) * | 2017-08-24 | 2017-12-26 | 浙江科屹耐火材料有限公司 | A kind of flame-retardant fibre board |
| CN108298995A (en) * | 2018-01-29 | 2018-07-20 | 偃师市三合绝热科技有限公司 | A kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof |
| CN111662089A (en) * | 2020-07-05 | 2020-09-15 | 郑州瑞泰耐火科技有限公司 | High-temperature-resistant self-sintered nano plate and preparation method thereof |
| CN111732392A (en) * | 2020-07-05 | 2020-10-02 | 郑州瑞泰耐火科技有限公司 | High-strength nano plate and preparation method thereof |
| CN112266215A (en) * | 2020-10-30 | 2021-01-26 | 深圳市鑫富达电器有限公司 | Heat insulation material composition, heat insulation ring, preparation method of heat insulation ring and cooking appliance |
| CN112679140A (en) * | 2020-12-18 | 2021-04-20 | 江苏山由帝奥节能新材股份有限公司 | Nano modified glass fiber composite core material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN105541313B (en) | 2018-06-19 |
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Effective date of registration: 20180521 Address after: 300804 No. 18, Pan Qing Road, Datang Town, Baodi District, Tianjin Applicant after: Tianjin weizhe energy-saving environmental protection Polytron Technologies Inc Address before: No. 18 building, Qingda garden, double river road, Tianjin, Beichen District, Tianjin Applicant before: Yu Hai Applicant before: Tang Jinquan |
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