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Method for preparing glass wool

A glass wool and glass fiber technology, applied in the field of thermal insulation materials, can solve problems such as unfavorable social sustainable development, lack of suitable materials for thermal insulation, and conflicting long-term planning and development.

Inactive Publication Date: 2016-01-06
世纪良基集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The improvement of energy-saving standards has led to the fact that the existing glass wool with a thickness of 2cm on the market can no longer meet the requirements; and most glass wool enterprises have adopted the method of increasing the thickness of glass wool at the expense of the effective volume of the building, which is bound to significantly affect the production and installation systems. Adjustment consumes a lot of manpower, material resources, and financial resources, and it is also contrary to the long-term planning and development of national building energy conservation, which is not conducive to the sustainable development of society
In addition, there is no suitable material for thermal insulation of parts with narrow space and complicated pipelines.

Method used

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  • Method for preparing glass wool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] nano-SiO 2 , has the following basic properties: the specific surface area is 200±25m 2 / g; loss on drying is 1% (drying at 100°C for 2h); loss on ignition is 4% (burning at 1000°C for 2h); purity is 99.8%; pH value of suspension is 3.7~4.7 (4% water suspension Turbid liquid); the bulk density is 50g / L; the particle size range is 10nm to 20nm; the average particle size is about 15nm.

[0096] 11g of nano-SiO 2 Add it into 73g of the above-mentioned glass fibers, and stir at a speed of 100r / min for 1 hour, so that the nanoparticles are uniformly attached to the surface of the glass fibers, and a composite of nanoparticles and glass fibers is obtained.

[0097] Spray 8g of acrylic resin binder (provided by the factory for direct spraying) into the composite of the above-mentioned nanoparticles and glass fibers, and then put it into a mold and use a YES-300 pressure testing machine for compression molding. During the pressing process, the pressure was first applied slow...

Embodiment 2

[0100] In addition to adding 5.5g of nano-SiO 2 The same method as in Example 1 was used to prepare the glass wool of the present invention except for 5.5 g of silicon carbide (with a particle size ranging from 2 μm to 4 μm; an average particle size of about 3 μm).

[0101] The results of the back temperature test were as follows: image 3 shown. It can be seen that the maximum temperature difference between the hot surface and the cold surface 3 of the glass wool is 131 degrees, and the gap tends to widen.

Embodiment 3

[0103] In addition to adding 5.5g of nano-SiO 2 , 5.0g of silicon carbide (the particle size range is 2μm~4μm; the average particle size is about 3μm), 0.5g nano-Al 2 o 3 (The average particle diameter is about 30nm~about 50nm), adopt the same method as Example 1 to prepare the glass wool of the present invention.

[0104] The results of the back temperature test show that the thermal insulation effect of the glass wool is better than that of Example 2.

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Abstract

The invention belongs to the technical field of heat preservation and particularly relates to a method for preparing glass wool. The method comprises the following steps: (1) enabling nanoparticles to be attached onto the surfaces of glass fibers so as to obtain a complex of the nanoparticles and the glass fibers; (2) spraying a binder containing solution to the complex; and (3) carrying out compression molding on the obtained product, and then, carrying out thermosetting, wherein the average particle diameter of the nanoparticles is 0 to about 100nm, the weight of the nanoparticles is less than or equal 20% the weight of the glass fibers, and the nanoparticles contain nano SiO2. According to the glass wool prepared by the method provided by the invention, through the nanoparticles attached to the surface of the contained glass fibers, surface contact among the glass fibers of the glass wool in the prior art is changed into point contact among the nanoparticles of the glass wool, so that the heat conduction of the glass wool can be remarkably lowered, and thus the glass wool can have a low coefficient of thermal conductivity.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, and relates to a method for preparing glass wool, more specifically, the invention relates to a method for preparing glass wool with low thermal conductivity. Background technique [0002] Glass wool belongs to a category of glass fibers and is a man-made inorganic fiber. Glass wool is a material made of molten glass fibrosis to form a cotton-like material. Its chemical composition belongs to glass and is an inorganic fiber. It has good formability, small bulk density, low thermal conductivity, thermal insulation, good sound absorption performance, corrosion resistance, and stable chemical properties. [0003] There are two types of glass wool currently on the market: white formaldehyde-free glass wool and yellow phenolic resin glass wool. White formaldehyde-free glass wool is mainly made of waste glass, which is melted, centrifuged, blown into cotton, and then formaldehyde-free acry...

Claims

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Application Information

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IPC IPC(8): C03B37/005
Inventor 郑忠清倪文陈德平姬军
Owner 世纪良基集团有限公司
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