Method for enhancing strength of microfiber glass wool

A technology of glass wool and microfiber, applied in the direction of glass manufacturing equipment, manufacturing tools, etc., can solve the problems that cannot meet the needs, and achieve the effect of improving the tensile strength

Active Publication Date: 2015-01-07
玉门市天鸿化工有限公司
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Problems solved by technology

The national standard is microfiber glass wool products at this stage, with 29 o CSR as an example (SR means beating degree), the tensile strength is 25 N / cm 2 (The national standard is 15 N / cm 2 ), such tensile strength, although qualified, still cannot meet the needs in some special application fields

Method used

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  • Method for enhancing strength of microfiber glass wool

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Embodiment

[0013] The low calorific value gas we use can be yellow phosphorus tail gas (its CO content reaches 87%-92%, and its calorific value is 2500-2900KCa / m 3 ) or coal mine gas (calorific value is 3100-4000KCa / m 3 ).

[0014] Our research direction: the combustible gas is under pressure, and its combustion flame heats the glass filaments. At the same time, the gas pressure blows the glass filaments out forcefully, and the glass filaments are heated and compressed in a short time, thereby expanding into microfiber glass wool. Therefore, the production process of microfiber glass wool is affected by both heating and pressurization, and the tensile strength of the product is affected by pressure. If the injection pressure of the gas can be increased (for natural gas, the flow rate is 0.012m 3 / s), it is bound to be able to increase the tensile strength. But what follows is that due to the increase of gas flow rate, the volume of gas burned per unit time increases, then the temper...

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Abstract

The invention relates to a method for enhancing strength of microfiber glass wool, which is characterized by comprising the following steps: mixing low-heat-value gas, of which the heating value is 2500-4000 KCa / m<3>, with air, and sending the mixture into a gas distribution disk by a fan; and after combustion, blowing flame to glass fiber at a flaming port, thereby obtaining the microfiber glass wool, wherein the flow rate of the low-heat-value gas is 0.035-0.042 m<3> / s; the volume mixing ratio of exhaust to air is 1:1.61; the diameter of the through hole of the gas distribution disk is 3.8-4.2cm; and the temperature of the flame of the gas mixture of the low-heat-value gas and the air is 1200-1500 DEG C. On the premise of keeping the flame temperature, the flow rate of the low-heat-value combustible gas is increased, thereby enhancing the tensile strength of the final microfiber glass wool product. The invention is suitable for processing higher-grade microfiber glass wool downstream products.

Description

technical field [0001] The invention relates to a method for improving the strength of microfiber glass wool. Background technique [0002] Microfiber glass wool is a fixed-length microfiber made of glass balls as raw material, which is melted once at high temperature and then blown by high-temperature and high-speed airflow. It is commonly known as ultra-fine glass wool, and its average fiber diameter is not more than 3.5 μm. Microfiber glass wool is a short fiber in the form of fluffy cotton wool, which has a small diameter, a large specific surface area, and flexible fibers. Low thermal conductivity, low electrical conductivity, high temperature resistance, corrosion resistance, non-toxic, non-combustible, good adsorption and good chemical stability and other excellent characteristics; its products have small pore size, large porosity, and small bulk density, which are high-performance sound insulation and heat insulation. High clean air and liquid filter mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/022
Inventor 陈曾巫凡陈联强吴与翥
Owner 玉门市天鸿化工有限公司
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