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A kind of high infrared reflectivity ceramic fiber thermal insulation material and preparation method thereof

A ceramic fiber and infrared reflection technology, which is applied in the field of high infrared reflectance ceramic fiber heat insulation materials and its preparation, can solve the problems of low strength, weakened heat preservation effect, and low melting point, so as to increase high-temperature infrared reflectivity and reduce high-temperature Effect of low thermal conductivity and high temperature thermal conductivity

Inactive Publication Date: 2017-03-08
苏安能建筑新材料(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned technologies have obvious advantages, they still have the following disadvantages: (1) The introduced organic additives, adhesives or binders are carbonized and decomposed at high temperatures, which are prone to produce dense smoke and irritating gases, polluting the environment; (2) The introduced parts The melting point of raw materials or additives is low, and the resulting low-melting liquid phase intensifies the shrinkage of ceramic fibers and reduces the service life of the product; (3) the strength is small, and it is prone to compression and deformation after being subjected to external stress, mechanical vibration or airflow erosion , affect the structural stability of the thermal insulation lining and weaken the thermal insulation effect; (4) Potassium titanate whiskers, microbeads, etc. are introduced in the form of direct addition, and their distribution form cannot be controlled in the material, and can only be distributed in the form of "scattering" on the ceramics Between the fibers, the thermal insulation effect of the material is greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A ceramic fiber thermal insulation material with high infrared reflectivity and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0029] The first step is to mix 20~30wt% anhydrous potassium carbonate, 60~70wt% titanium dioxide and 8~10wt% glucose powder evenly, press and form under the condition of 50~80MPa, in the argon atmosphere and 1000~1200 Heat treatment at ℃ for 1-2 hours, cool naturally to obtain heat-treated material I; then crush, grind, and sieve the heat-treated material I to obtain material A with a particle size of 0.088-1 mm and material B with a particle size of less than 0.088 mm.

[0030] Step 2: Soak the material A in water for 12-24 hours, then dry at 70-110°C for 12-24 hours, heat-treat at 1000-1200°C for 0.5-5 hours, and cool naturally to obtain material C.

[0031] The third step is to place the calcium magnesium silicon ceramic fiber in a titanium trichloride solution with a concentra...

Embodiment 2

[0035] A ceramic fiber thermal insulation material with high infrared reflectivity and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0036] The first step is to mix 30~40wt% potassium sulfate, 50~60wt% metatitanic acid and 8~10wt% glucose powder evenly, press and form under the condition of 80~100MPa, in nitrogen atmosphere and 800~1000℃ heat treatment for 0.5-1 hour, and naturally cool to obtain heat-treated material I; then crush, grind, and sieve the heat-treated material I to obtain material A with a particle size of 0.088-1 mm and material B with a particle size of less than 0.088 mm.

[0037] Step 2: Soak the material A in water for 12-24 hours, then dry at 70-110°C for 12-24 hours, heat-treat at 1000-1200°C for 0.5-5 hours, and cool naturally to obtain material C.

[0038] The third step is to place the aluminum silicate ceramic fiber in a titanyl sulfate solution with a concentration of 10~20wt%, stir at...

Embodiment 3

[0042] A ceramic fiber thermal insulation material with high infrared reflectivity and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0043] The first step is to mix 25~35wt% of potassium chloride, 60~70wt% of metatitanic acid and 5~8wt% of industrial dextrin powder evenly, press molding under the condition of 50~80MPa, in the argon atmosphere and 800 Heat treatment at ~1000°C for 1-2 hours, cool naturally to obtain heat-treated material I; then crush, grind, and sieve the heat-treated material I to obtain material A with a particle size of 0.088-1mm and material B with a particle size of less than 0.088mm .

[0044] Step 2: Soak the material A in water for 12-24 hours, then dry at 70-110°C for 12-24 hours, heat-treat at 1000-1200°C for 0.5-5 hours, and cool naturally to obtain material C.

[0045] The third step is to place the calcium magnesium silicon ceramic fiber in a titanyl sulfate solution with a concent...

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Abstract

The invention discloses a high-infrared-reflectivity ceramic fiber heat-insulating material and a preparation method thereof. The preparation method includes: grinding potassium-containing raw material, titanium-containing raw material and binding agent after being mixed well, formed and thermally treated to obtain a material A of 0.088-1mm in granularity and a material B smaller than 0.088mm in granularity; drying the material A after being soaked by water, and thermally treating the material A under condition of 1000-1200 DEG C to obtain a material C; disposing ceramic fiber in a titanium-compound-containing solution of 5-30wt% in concentration, stirring, filtering, drying, and thermally treating to obtain pre-treated ceramic fiber; mixing the pre-treated ceramic fiber, the material B, the material C, the binding agent and additive well, and adding water for stirring to form slurry; injecting the slurry into a die, dewatering in a vacuum manner, drying, thermally treating under condition of 800-1100 DEG C, and cooling to obtain the high-infrared-reflectivity ceramic fiber heat-insulating material. The preparation method is low in production cost, and the high-infrared-reflectivity ceramic fiber heat-insulating material prepared by the method has the advantages of low size density, high bending strength and low high-temperature heat conducting coefficient.

Description

technical field [0001] The invention belongs to the technical field of ceramic fiber thermal insulation materials. In particular, it relates to a ceramic fiber thermal insulation material with high infrared reflectivity and a preparation method thereof. Background technique [0002] Thermal insulation is one of the important measures to save energy and ensure sustainable economic development. The development of high-temperature industry has put forward higher requirements for thermal insulation materials, such as high efficiency, energy saving, high strength, low conductivity and waterproof. For this reason, people have been seeking and researching new thermal insulation materials for high-temperature industries with low thermal conductivity, high infrared reflectivity and microporosity. [0003] Ceramic fiber is a kind of fibrous lightweight refractory material. The thermal insulation material made of it has the advantages of high temperature resistance, good thermal stab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/28C04B28/00C04B26/00C04B14/38
Inventor 刘浩刘江波王周福王玺堂马妍
Owner 苏安能建筑新材料(苏州)有限公司
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