A glass fiber high temperature needle-punched composite felt

Abstract

The invention discloses a glass fiber high-temperature needled compound felt. The glass fiber high-temperature needled compound felt comprises glass fibers and reinforcement polyester fibers. The mass percent of the glass fibers is 33%-43%, and the mass percent of the reinforcement polyester fibers is 57%-67%. The reinforcement polyester fibers comprise the following raw materials by weight: 65-73 parts of polybutylene terephthalate, 5-15 parts of aluminium oxide nanometer, 4-8 parts of sodium lignin sulfonate, 2-4 parts of calcium lignosulphonate, 6-12 parts of gelatin, 0.3-0.6 parts of 8-hydroxyquinoline, 0.2-0.4 parts of hydroxybiphenyl sodium salt, and 0.6-1.3 parts of an initiator. The provided compound felt has the excellent high temperature resistance, abrasive resistance, water resistance, stretching resistance, toughness and mildew-proof effect. The multi-layer superposition of the reinforcement polyester fibers and the glass fibers is used, and a needled mode is used for preparation, so the binding force between the fibers is remarkably strengthened.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a glass fiber high-temperature needle-punched composite felt. Background technique [0002] Glass fiber needle felt is a kind of filter material with reasonable structure and good performance. With glass fiber as raw material, the carded chopped glass fiber felt is needle-punched with needles, and the glass fiber of the felt layer is made needle-punched. The felt-like non-woven fabric filter material made of intertwined with each other is widely used in various bag filters for flue gas purification and dust recovery in carbon black, steel, non-ferrous metals, chemical industry, incineration and other industries. [0003] The existing glass fiber needle-punched mat is mainly to fix the glass fiber and the glass fiber together by needling. However, the mat made of glass fiber alone has poor water resistance, and it is easy to rot after absorbing water, and the glass Th...

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Problems solved by technology

[0003] The existing glass fiber needle-punched mat is mainly to fix the glass fiber and the glass fiber together by needle punching. However, the mat made of glass fiber alone has poor water resistance, and it is easy to rot after absorbing water, and the glass The hooking firmness between fiber and glass fiber is poor, the service life is short, and with the prolongation of the use time of glass fiber needle felt, the wear of the surface of glass fiber needle felt increases, and the gap between glass fiber and glass fiber The fastness of the hooking is reduced, resulting in the phenomenon of separation between glass fibers and glass fibers, which affects its use function, and the ductility of the existing glass fiber needle felt surface is poor, and it is easy to break after stretching

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