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Glass wool with nano-particle layer

A technology of nano-particles and glass wool, which is 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 long-term planning and development.

Inactive Publication Date: 2015-11-25
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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  • Glass wool with nano-particle layer
  • Glass wool with nano-particle layer
  • Glass wool with nano-particle layer

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] 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 slowly by c...

Embodiment 2

[0100] In addition to adding half the amount of nano-SiO 2 , and nano-SiO 2 Except for the same amount of silicon carbide (with a particle size ranging from 2 μm to 4 μm; the average particle size is about 3 μm), the glass wool with nanoparticle layer of the present invention was prepared by the same method as in Example 1. The thickness of the nanoparticle layer is 1 / 33 of the diameter of the glass fiber.

[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 121 degrees, and the gap tends to widen.

Embodiment 3

[0103] 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 glass wool with the nanoparticle layer of the present invention. The thickness of the nanoparticle layer is 1 / 33 of the diameter of the glass fiber.

[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 glass wool with nano-particle layers. The glass wool with the nano-particle layers comprises a plurality of glass fibers, wherein each nano-particle layer is arranged on the outer side of one of the glass fibers; the average particle diameter of nano particles is larger than 0 and is about 0-100 nm; the nano particles comprise nano SiO2; the thickness of each nano-particle layer is 1 / 50-1 / 10 of the diameter of each glass fiber. Compared with the glass wool in the prior art, the glass wool provided by the invention has the advantages that on the premise of the same thickness, the heat preservation and insulation effects of an insulation board made of the 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 glass wool with a nano particle layer. 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 wo...

Claims

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Application Information

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IPC IPC(8): B32B17/02
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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