Chopped glass fiber core material harmless to human body and preparation method thereof

Abstract

A core material of the current vacuum insulating plate is flame cotton or glass cotton, the fiber diameter is wide in distribution range, the diameter of fibers is less than 5 mum, the requirement of the world health organization cannot be met, and the fibers cannot be exported to foreign countries, such as European unions. A chopped glass fiber core material harmless to a human body and a preparation method thereof which are provided by the invention are characterized in that the core material consists of 10 to 100 layers of chopped glass fiber thin felts, wherein the diameter of the chopped glass fiber is 6 to 20 mum, the length of the chopped glass fiber is 5 to 30mm, and the thickness of each layer of glass fiber thin felt is 0.5 to 2mm. The core material has the beneficial effects that the continuous long glass fiber is the fiber with infinite length which is formed by mechanically stretching a platinum alloy plate, so that the fiber has the characteristic of uniform diameter. After the continuous long glass fiber of which the diameter is more than 6 mum is chopped, the diameter of all the chopped glass fibers can be ensured to be more than 6 mum, and the requirement of the world health organization is met.

Description

technical field [0001] The invention relates to a glass fiber core material and a preparation method thereof, in particular to a chopped glass fiber core material harmless to human body and a preparation method thereof. Background technique [0002] Vacuum insulation panel is a super-insulation material with ultra-low thermal conductivity. Its thickness is only one-third of that of traditional insulation materials, but its thermal insulation performance is 5-10 times that of traditional insulation materials. At present, vacuum insulation panels have been successfully applied in refrigerators, freezers, refrigerated containers, building wall insulation, etc., and have broad development prospects. [0003] The core material of existing vacuum insulation panels is mainly centrifugal cotton, flame cotton or a mixture of the two. Centrifugal cotton is prepared by centrifugal blowing method, the average fiber diameter is 4-7μm, and the fiber diameter is widely distributed, rangin...

AI Technical Summary

Problems solved by technology

[0005] However, the core material of existing vacuum insulation panels mainly uses flame wool or glass wool. The diameter of glass fibers in the core material is widely distributed, and many fibers have a diameter of less than 5 μm, which cannot meet the requirements of the World Health Organization and cannot be exported to countries such as the European Union.

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