A kind of fly ash doped glass fiber core material and preparation method thereof

Abstract

The invention discloses a fly ash doped glass fiber core material and a preparation method thereof, the core material uses high alkali glass fiber as a matrix accounting for 60%-70% by mass, a binder is coated among the core material fiber, the binder is silicon oxide or sodium silicate accounting for 5%-10% by mass, fly ash is doped among fiber holes, the fly ash particle diameter is 100-300 mesh, and the fly ash accounts for 25%-30% by mass. A glass wool felt is prepared by wet process, the surface of the glass wool felt is uniformly sprayed with silane coupling agent during the drying process, after curing, a vibration powder adding machine is placed above the glass fiber core material, fly ash particles are placed in the vibration powder adding machine, and the fly ash particles are uniformly distributed in the holes of the core material fiber. The rigidity of the fly ash doped glass fiber core material is greatly enhanced, the problem that, a traditional vacuum thermal insulation panel core material is highly elastic, when a surface internal resistance diaphragm is damaged, the core material quickly absorbs air to rebound to cause further damage to a vacuum thermal insulation panel structure, can be effectively solved, and the service life of the vacuum thermal insulation panel can be greatly prolonged.

Description

technical field [0001] The invention relates to a glass fiber core material and a preparation method thereof, in particular to a fly ash-doped glass fiber core material and a preparation method thereof. [0002] technical background [0003] With the continuous development and progress of social economy, energy conservation and environmental protection have increasingly become the focus of people's attention. People put forward higher requirements for thermal conductivity, flame retardancy, decorative performance and installation volume of building insulation materials. However, traditional thermal insulation materials such as polyurethane foam and polystyrene foam, on the one hand, due to their high thermal conductivity, poor thermal insulation performance, and serious heat loss, on the other hand, the materials themselves do not have good fire and flame retardant properties. Performance, there is a certain fire hazard, which is far from the standard in people's minds. [0...

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Problems solved by technology

However, the shortcoming of this invention is that the preparation process of the modified PE film is very complicated, which is not conducive to its popularization and use. In addition, this method only adds a modified PE film between the core material and the film material to prevent the core material from inhaling and rebounding, and does not solve the problem at its root

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