Preparation method of high-heat-insulation microfiber glass wool thermal-insulation material

A thermal insulation material and microfiber technology, applied in glass manufacturing equipment, manufacturing tools, etc., can solve problems such as poor thermal insulation performance, and achieve the effects of good electrical insulation, safe living environment, and excellent thermal insulation and sound absorption performance

Pending Publication Date: 2019-11-12
郭勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Technical problem to be solved by the present invention: Aiming at the problem of poor thermal insulation performance of existing glass wool thermal insulation materials, a preparation method of high thermal insulation microfiber glass wool thermal insulation materials is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Put the silicate mixture, mineral mixture, borax, and soda ash in a mixer, and stir and mix at a speed of 200r / min for 20 minutes at room temperature to obtain a mixture; put the mixture in an electric melting furnace at a temperature of 5°C / min Heating at a heating rate of 800°C and holding for 1 hour to obtain a sintered product; heating the sintered product to 1300°C at a heating rate of 5°C / min and holding for 4 hours to obtain a clarified glass; 1100°C, then drained through the drain plate into a high-speed centrifuge, and centrifuged at a speed of 4000r / min to obtain primary fibers; the primary fibers are placed in the combustion chamber outside the centrifuge, and secondary fibers are formed under the drafting of high-temperature annular airflow , High heat insulation microfiber glass wool insulation material. The parts by weight of silicate mixture, mineral mixture, borax and soda ash are 80 parts of silicate mixture, 40 parts of mineral mixture, 8 parts of bora...

Embodiment 2

[0038] Put the silicate mixture, mineral mixture, borax, and soda ash in a mixer, stir and mix at room temperature at a speed of 210r / min for 22min to obtain a mixture; put the mixture in an electric melting furnace at a temperature of 5°C / min Heating to 850°C at a heating rate of 5°C / min and holding for 1 hour to obtain a sintered product; heating the sintered product to 1320°C at a heating rate of 5°C / min and holding for 4 hours to obtain a clarified molten glass; flowing the clarified glass to the forehearth and cooling to 1120°C, then drained through the drain plate into a high-speed centrifuge, and centrifuged at a speed of 4200r / min to obtain primary fibers; the primary fibers are placed in the combustion chamber outside the centrifuge, and secondary fibers are formed under the drafting of high-temperature annular airflow , High heat insulation microfiber glass wool insulation material. The parts by weight of silicate mixture, mineral mixture, borax and soda ash are 85 p...

Embodiment 3

[0040] Put the silicate mixture, mineral mixture, borax, and soda ash in a mixer, and stir and mix at a speed of 220r / min for 24 minutes at room temperature to obtain a mixture; put the mixture in an electric melting furnace at 5°C / min Heating at a heating rate of 900°C for 1 hour to obtain a sintered product; heating the sintered product to 1340°C at a heating rate of 5°C / min and holding for 5 hours to obtain a clarified glass; 1140°C, drained through the drain plate into a high-speed centrifuge, centrifuged at 4400r / min to obtain primary fibers; placed the primary fibers in the combustion chamber outside the centrifuge, and formed secondary fibers under the drafting of high-temperature annular airflow , High heat insulation microfiber glass wool insulation material. The parts by weight of silicate mixture, mineral mixture, borax and soda ash are 90 parts of silicate mixture, 45 parts of mineral mixture, 9 parts of borax and 4 parts of soda ash. The width of the forehearth i...

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Abstract

The invention relates to a preparation method of a high-heat-insulation microfiber glass wool thermal-insulation material and belongs to the technical field of glass wool materials. The preparation method comprises the following steps: firstly, a raw material is processed into molten glass by adopting a centrifugal blowing method, and the high-temperature molten glass flows through a bushing platealong a material channel to form a continuous and stable molten glass stream; then, the stream vertically and freely falls down and enters a centrifuge with a large number of small holes in the sidewall, and under the action of centrifugal force, the molten glass is thrown out of the small holes to form a plurality of thin streams, and primary fibers are formed; the primary fibers are drafted byhigh-temperature and high-speed airflow generated by an annular combustion chamber on the outer side of the centrifuge to form secondary fibers, and the microfiber glass wool is obtained. The microfiber glass wool is flocculent in appearance, pure white, soft and smooth in hand feeling, and has a good heat preservation and insulation effect; the smaller the fiber diameter of the glass wool is, the lower the heat conductivity coefficient of the glass wool is, and better heat preservation and insulation performance is achieved. Under the traction of high-temperature and high-speed annular airflow, the fiber diameter is reduced, so that the heat preservation and insulation performance of the cotton fiber can be effectively improved.

Description

technical field [0001] The invention relates to a preparation method of a high heat insulation microfiber glass wool heat preservation material, belonging to the technical field of glass wool materials. Background technique [0002] Liquefied natural gas is referred to as LNG, and LNG is a very important form of compression in the global application of natural gas resources. The storage and transportation of LNG have their own unique methods. The storage methods used in the storage process include tank storage and rock cavity storage. The most important storage method is storage tank storage, which is convenient for subsequent transportation. . [0003] The storage of LNG needs to maintain a low temperature environment, and the insulation of the storage tank must be guaranteed when using the storage tank. Therefore, different insulation structures will be adopted for different LNG storage tanks, for example: small storage tanks such as LNG automobile fuel tanks Tanks are i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/00C03C6/04C03C1/02C03B37/04C03B37/15
CPCC03B37/04C03B37/15C03C1/00C03C1/02C03C13/00
Inventor 丁正颖
Owner 郭勇
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