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Composite glass wool

A glass wool and glass fiber technology, applied in the field of thermal insulation materials, can solve the problems of lack of suitable materials for thermal insulation, contradicting long-term planning and development, and unfavorable social sustainable development, and achieve the effect of low thermal conductivity and reduced thermal conduction.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] 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.

[0097] Spray 4g of acrylic resin binder into 37g of the above-mentioned glass fiber, 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 firstly applied slowly by controlling the application rate of the pressure until the sample reached a thickness of 1 cm, and then the pressure delivery was stopped to obtain a glass fiber layer.

[0098] Appropriate amount of nano-SiO 2 The ethanol solution was sprayed onto the above-mentioned glass fiber layer so that the solvent evaporated to form a 120nm thick ...

Embodiment 2

[0103] In addition to adding half the amount of nano-SiO 2 , and nano-SiO 2 The same method as in Example 1 was used to prepare the composite glass wool of the present invention except for the same amount of silicon carbide (with a particle size ranging from 2 μm to 4 μm; an average particle size of about 3 μm).

[0104] 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 119 degrees, and the gap tends to widen.

Embodiment 3

[0106] In addition to adding half the amount of nano-SiO 2 , and nano-SiO 2 Equal amount of silicon carbide (particle size range is 2μm ~ 4μm; average particle size is about 3μm), nano-SiO 2 1 / 10 of the amount of nano-Al 2 o 3 (The average particle diameter is about 30nm~about 50nm), adopt the same method as Example 1 to prepare the composite glass wool of the present invention.

[0107] 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 composite glass wool. The composite glass wool contains at least two glass fiber layers, and a nanoparticle layer is formed between every two adjacent glass fiber layers; the average particle diameter of nanoparticles is 0 to about 100nm; the nanoparticles contain nano SiO2; and the thickness of each nanoparticle layer is 50-1,000nm. Compared with the glass wool in the prior art, the composite glass wool has the advantage that on the premise of the same thickness, the heat preservation and heat insulation effects of heat preservation boards made from the composite glass wool provided by the invention can be remarkably improved.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, and relates to a glass wool, more specifically, the invention relates to a composite glass wool. 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 acrylic resin is used as a binder to make glass wool board. The b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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