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Mesoporous compound material, preparation method thereof and application thereof in preparation of middle and low temperature resistant heat insulation and preservation materials

A technology of composite materials and mesoporous materials, applied in the field of materials, can solve problems such as the inability to meet the thermal insulation environment and thermal insulation requirements

Active Publication Date: 2017-05-31
常州优纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing heat insulation materials are being continuously improved, due to the rapid development of society, they still cannot meet the increasingly stringent heat insulation environment and heat insulation requirements. Therefore, the improvement of the performance of heat insulation materials is still the basic A research hotspot in the field

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  • Mesoporous compound material, preparation method thereof and application thereof in preparation of middle and low temperature resistant heat insulation and preservation materials
  • Mesoporous compound material, preparation method thereof and application thereof in preparation of middle and low temperature resistant heat insulation and preservation materials

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[0059] Preparation method of mesoporous composite material

[0060] Another aspect of the present invention provides a preparation method of the mesoporous composite material.

[0061] The preparation method of the mesoporous composite material provided by the present invention may include mixing the precursor of the mesoporous material with fibers and / or fiber products, and heat-treating to obtain the mesoporous composite material.

[0062] In the preparation method provided by the present invention, the fiber can be a fiber containing silicon, the Si-OH functional group in the precursor of the mesoporous material and the Si-OH functional group in the fiber can be polycondensed, and the silicon oxide of the mesoporous material can be formed. Skeleton structure can also make the Si in the mesoporous material (for example, constitute the Si in the silicon-oxygen skeleton of the mesoporous material) and the Si in the fiber be combined with -Si-O-Si-bond, so that the fiber and / or...

Embodiment 1

[0094] In the solution of P123 (BASF company product, molecular weight 5800), sodium hydroxide and tetraethyl orthosilicate (TEOS) are added under the condition of heating and stirring, and the molar composition of the mixture is TEOS: P123: NaOH: H 2 O=1:0.017:6:200; stirred at room temperature for 2 hours, then transferred to an autoclave, and subjected to hydrothermal reaction at 100±10°C for 3 days to obtain a precursor solution, and the aluminum silicate fiber mat (apparent density 0.09g / cm 3 , diameter 3μm) soaked in the precursor solution (mass ratio precursor solution: fiber mat = 0.3:1), after the composite is fully sintered at 350±20°C for 15h, the Si-O-Si mesoporous composite insulation material is finally obtained. The obtained mesoporous material has a pore volume of 0.7ml / g, a pore diameter of 6.8nm, a pore wall of 3.6nm, and a porosity of 69.79%. The Si-O-Si bond is detected by a Fourier transform infrared spectrometer (FTIR), and the FTIR analysis shows that th...

Embodiment 2

[0096] Dissolve dodecyltrimethylammonium bromide (DDAB) and sodium hydroxide in a mixed solution of water and ethanol, add tetraethyl orthosilicate (TEOS) after vigorous stirring, and the molar composition of the mixture is TEOS :DDAB:NaOH:EtOH:H 2 O=1:0.5:2.5:60:400; Stir at 40±10°C for 48h to obtain the precursor solution, and the aluminum silicate fiber mat (apparent density 0.09g / cm 3 , diameter 3μm) soaked in the precursor solution (mass ratio precursor solution: fiber mat = 0.3:1), fully composited and sintered at 400±10°C for 12h, and finally obtained Si-O-Si mesoporous composite insulation material. The pore volume of the obtained mesoporous material is 1.2ml / g, the pore diameter is 2.3nm, the pore wall is 1.1nm, and the porosity is 79.84%. The Si-O-Si bond is detected by a Fourier transform infrared spectrometer (FTIR), and the FTIR analysis shows that the Si-O-Si bond of the uncompounded silicon-based mesoporous material is at 1096cm -1 There is a characteristic vi...

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Abstract

The invention relates to the field of materials, and particularly relates to a mesoporous compound material, a preparation method thereof and application thereof in preparation of middle and low temperature resistant heat insulation and preservation materials. The mesoporous compound material comprises a mesoporous material and fibers, wherein the mesoporous material is a silica-based mesoporous material; the fibers are silicon-containing fibers; and the mesoporous material and the fibers are compounded through -Si-O-Si- bonds. The mesoporous material and the fibers are compounded in a heat treatment manner, and the compound material is further researched, thereby providing a mesoporous compound heat insulation and preservation material which is compounded through the -Si-O-Si- bonds, and has good heat-resistant stability at middle and low temperatures and low heat conductivity coefficients. The compound material has low heat conductivity coefficients at a normal temperature, and the lowest heat conductivity coefficient can reach 0.007w / (m.k); and meanwhile, the compound structure is stable at middle and low temperatures, and the mesoporous compound material has good industrialization prospects.

Description

technical field [0001] The invention relates to the field of materials, in particular to a mesoporous composite material, its preparation method and its application in the preparation of medium and low temperature resistant thermal insulation materials. Background technique [0002] Thermal insulation is to reduce heat loss, improve energy utilization, and ultimately achieve the goal of energy conservation. The development and progress of thermal insulation materials will help promote the implementation of energy-saving projects, meet the needs of national economic development for energy, and protect the national economy. Building healthy and stable development has great social and economic significance. Therefore, it is necessary to vigorously develop the thermal insulation material industry and widely adopt high-quality thermal insulation materials, which is of great practical significance to the healthy and stable development of economic construction. For now, traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02C04B14/06C04B14/46F16L59/02
CPCC04B30/02C04B2201/32F16L59/02C04B14/064C04B14/4656
Inventor 栾玉成张琼琼
Owner 常州优纳新材料科技有限公司