Preparation method of glass wool with low heat conductivity coefficients

A technology of thermal conductivity and glass wool, which is applied in the field of glass wool preparation, can solve problems such as long-term planning and development, lack of suitable materials for heat preservation, and unfavorable social sustainable development.

Inactive Publication Date: 2015-12-23
世纪良基集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 instal

Method used

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  • Preparation method of glass wool with low heat conductivity coefficients
  • Preparation method of glass wool with low heat conductivity coefficients
  • Preparation method of glass wool with low heat conductivity coefficients

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 field of insulation technology, and particularly relates to a preparation method of glass wool with low heat conductivity coefficients. The preparation method comprises the following steps of (1) attaching nano particles on the surface of glass fiber to obtain a compound of the nano particles and the glass fiber; (2) spraying solution containing binding agent on the compound; (3) compression moulding the obtained product, and then heating and curing, wherein the average grain diameter of the nano particles is larger than 0 to 100nm; the weight of the nano particles is less or equal to 20 percent of the weight of the glass fiber; the nano particles contain nano SiO2 and are doped with infrared opacifier particles; the infrared opacifier particles are SiC particles, BN particles, ZrSiO4 particles or KT6 particles. Compared with the glass wool in the prior art, under the premise of same thickness, according to an insulation plate made of the glass wool, the insulation effect of the insulation plate can be remarkably improved.

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): C03C13/00C03B37/10C04B26/06C04B26/10
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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