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A kind of attapulgite composite glass fiber core material and preparation method thereof

A technology of attapulgite and attapulgite, which is applied in the field of glass fiber and its preparation, can solve the problems of failure of vacuum insulation panels and increase of thermal conductivity, achieve high structural stability, rich mineral resources, and improve corrosion resistance

Active Publication Date: 2021-12-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention only optimizes the tiny pores on the surface of the glass fiber. When a small amount of gas is infiltrated, the thermal conductivity caused by the thermal diffusion of the gas may increase significantly and lead to the failure of the vacuum insulation panel.

Method used

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  • A kind of attapulgite composite glass fiber core material and preparation method thereof

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Effect test

Embodiment 1

[0024] Refer figure 1 , Attapulgite a fiberglass composite core member, glass fibers 1, 2 is a nest-like crystal nanorods attapulgite, a layer 3 chain attapulgite aerogels, wherein: the fiber has a core material between binders, doped nanorods attapulgite and attapulgite crystal between glass airgel pores, percentage by mass comprising 70% glass fibers, 25 percent attapulgite crystal nanorods, attapulgite 3% soil airgel and 2% of sodium silicate. In preparing the specific process is as follows:

[0025] (1) attapulgite crystal nanorods take amide and polypropylene mixed with water, by ultrasound, arranged uniformly stirred suspension of attapulgite;

[0026] (2) a tetraethyl orthosilicate, aluminum chloride, and boric acid prepared in a molar ratio of uniform Al / Si / B in water 2:5:1 of Al-B-Si sol;

[0027] (3) The Al-B-Si attapulgite sol was added the suspension was stirred to give a uniform dispersion, the dispersion is degassed in a vacuum chamber after transferred into a mo...

Embodiment 2

[0033] Refer figure 1 , Attapulgite a fiberglass composite core member, glass fibers 1, 2 is a nest-like crystal nanorods attapulgite, a layer 3 chain attapulgite aerogels, wherein: the fiber has a core material between binders, doped nanorods attapulgite and attapulgite crystal between glass airgel pores, percentage by mass of glass fibers comprising 65%, 25% attapulgite crystal nanorods, 5% attapulgite soil airgel and 5% sodium silicate. In preparing the specific process is as follows:

[0034] (1) attapulgite crystal nanorods take amide and polypropylene mixed with water, by ultrasound, arranged uniformly stirred suspension of attapulgite;

[0035] (2) a tetraethyl orthosilicate, aluminum chloride, and boric acid prepared in a molar ratio of uniform Al / Si / B in water 2:5:1 of Al-B-Si sol;

[0036] (3) The Al-B-Si attapulgite sol was added the suspension was stirred to give a uniform dispersion, the dispersion is degassed in a vacuum chamber after transferred into a mold, by ...

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Abstract

The invention discloses an attapulgite composite glass fiber core material and a preparation method thereof. The core material uses glass fiber as a matrix, and the mass fraction is 60% to 78%. Between the pores of the glass fibers, 15% to 25% of bird's nest nanorod crystal attapulgite, 5% to 10% of layer chain attapulgite aerogel and 2% to 5% of binder are doped. The composite core material of the present invention can effectively utilize the bird's nest microstructure of nano-rod crystal attapulgite and the layer-chain nanofiber structure of attapulgite airgel to optimize the micron-based microstructure of the glass fiber core material. By adjusting the pore classification and pore size of the glass fiber core material, the structural stability and thermal insulation performance are improved, while the air pressure sensitivity is reduced, and the service life of the vacuum insulation panel is prolonged. In addition, the nano-rod attapulgite has excellent properties such as corrosion resistance, high temperature resistance and environmental protection, so that the composite core material can be used at higher temperatures.

Description

Technical field [0001] The present invention relates to a method for preparing glass fibers, and more particularly to a composite fiberglass core attapulgite and preparation method. Background technique [0002] Attapulgite, palygorskite, also known is a hydrated magnesium silicate mineral-rich, preferably its chemical formula was: Mg 5 Si 8 O 20 (HO) 2 (OH 2 ) 4 · 4h 2 O. Attapulgite fibrous porous crystalline form, because of its good adsorption, purification, bonding, bleaching properties, are widely used in chemical industry, textiles, building materials, environmental protection. Our attapulgite rich in mineral resources and excellent performance. As requirements increase, natural attapulgite due to impurities, structural defects such as scattering gradually replaced by crystalline nanorods attapulgite. Attapulgite crystal nanorods in resistance to corrosion, high temperature, insulation, environmental protection and exhibiting excellent performance. Most natural crystal nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B28/26
CPCC04B28/00C04B28/26C04B2201/32C04B14/42C04B14/102
Inventor 杨丽霞钟伯锋陈照峰张俊雄寇宗德
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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