Glass wool powder for large-scale production of glass wool, production method and glass wool

Abstract

The invention discloses glass wool powder for large-scale production of glass wool and a production method thereof as well as the glass wool. The glass wool powder comprises the following components in parts by weight: 75-85 parts of waste glass, 5-10 parts of borax pentahydrate, 1-3 parts of sodium carbonate, 1-3 parts of dolomite, 1-3 parts of potash feldspar, 1-2 parts of potassium carbonate, 0.5-1.5 parts of sodium nitrate, 0.3-1 part of table salt and 0.5-1 part of sodium sulfate. The glass wool powder and the production method thereof as well as the glass wool disclosed by the invention have the benefits that the production cost is low, resources are comprehensively utilized, and the environmental protection is facilitated; as the waste glass is used as a main raw material, the cost is low, so that the price of the glass wool is greatly reduced, the product competitiveness is improved, and meanwhile a large quantity of waste glass is treated, therefore, the environmental protection is facilitated; the compression resilience ratio of the glass wool is more than or equal to 96.1 percent; the average fiber diameter of the glass wool is 3.5 [mu]m; the moisture content is less than or equal to 0.3 percent; a thermal conductive coefficient is less than or equal to 0.032 W / (m.K); the mass loss rate is less than or equal to 4.8 percent, the raised temperature in a furnace is less than or equal to 3 DEG C, and the continuous flame time is 0 second.

Description

technical field [0001] The invention relates to glass wool powder for large-scale production of glass wool, a production method of glass wool and glass wool. Background technique [0002] Affected by factors such as product characteristics and cost, glass wool has far less requirements for glass liquid than flat glass. In the industry, in order to increase the melting rate of the furnace and reduce costs, more than 60% of waste glass is generally added to the powder formula. The molten glass is drawn by a centrifuge at high speed to form glass fibers with a diameter of less than 8 μm. The centrifugal glass fiber products produced on a large scale have insufficient toughness, brittle fibers, insufficient rebound of glass wool, and high dust rate. [0003] With the development of society, the application range of glass wool has rapidly expanded from the traditional construction field to aviation, aerospace, home appliances, automobiles and other fields. Most enterprises not ...

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Problems solved by technology

[0011] 3. The content of alkaline earth metal oxides is high, taking calcium oxide as an example, Ca 2+ It has the effect of polarizing bridge oxygen and weakening the silicon-oxygen bond, which may be one of the reasons why it reduces the high-temperature viscosity of glass liquid

The most common method used by most glass wool enterprises is to increase the temperature and reduce the viscosity to accelerate clarification in an attempt to eliminate air bubbles, but the effect is very small

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