A kind of electrostatic filter material with flame retardant function and its preparation method and application

Abstract

The invention provides an electrostatic filter material with flame-retardant function and its preparation method and application. The preparation method includes the following steps: 1) Melt spinning: use A component and B component to form a sheath core after melt spinning Continuous bicomponent composite filament of structure, wherein component A includes at least polyolefin polymer and functional medium with electricity storage function, component B includes at least polyester polymer and functional medium with flame retardant effect or group B Divided into polyester polymers with flame retardant properties; 2) Web formation: continuous skin-core structure bi-component composite filaments are divided into webs; 3) Reinforcement molding: hot air fusion bonding is used to form a double group 4) High-voltage electrostatic treatment: charge the two-component spunbond material. In this application, the electrostatic filter material is a single-layer medium-high-efficiency filter material, which can achieve the same filtration performance as the composite filter material, and can meet the flame-retardant standard FMVSS302 of the US automotive interior materials and the Chinese GB8410 standard.

Description

technical field [0001] The invention relates to a non-woven fabric, in particular to an electrostatic filter material with flame-retardant function and its preparation method and application. Background technique [0002] In the field of air filtration such as vehicle air conditioners and fresh air purification, the mainstream technology and medium and high-efficiency filtration products in the domestic and foreign markets are mainly melt-blown fine filter materials or electrostatic cotton filter materials, which are bonded by glue or ultrasonic bonding or high temperature and high pressure. , compounded with non-woven skeleton reinforcement materials to meet the standards and requirements of different grades of medium-efficiency filtration. [0003] Among the conventional medium and high-efficiency filter materials of F and H grades, the products of the above-mentioned melt-blown composite skeleton materials are also used at home and abroad, and composite filter materials a...

AI Technical Summary

Problems solved by technology

[0006] 1. Short-fiber dry-laid aggregates are mostly made of polyester staple fibers and low-melting point staple fibers blended and then hot-melted and reinforced. It is prone to heat shrinkage and large deformation due to re-melting of low melting point fibers;

[0007] 2. Wet-process staple fiber aggregates have an imminent quality hazard in the automotive manufacturing application industry that increasingly emphasizes VOC control due to the toxic odor emitted;

[0008] 3. The short-fiber dry-process and wet-process aggregates have a small rebound deformation after pleating, which is not conducive to the assembly and removal of automotive air-conditioning filters;

[0009] 4. The fiber arrangement and orientation of short-fiber aggregate components are disordered, and the appearance color is dark after molding, and the fabric style aesthetics is poor;

[0010] 5. Short-fiber aggregates are mostly impregnated with flame-retardant mother liquor and tenter-dried to achieve flame-retardant properties. The process is difficult and easy to change color. More importantly, this process cannot cope with increasingly stringent environmental protection supervision.

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