Oil absorption decolorizing filter bag and preparation method thereof

Abstract

The invention discloses an oil absorption decolorizing filter bag and a preparation method thereof. The filter bag is of a double-layer structure composed of an inner adsorption layer and an outer protective layer. The inner adsorption layer is prepared from polypropylene fiber, polyester fiber, polyimide fiber, meta-aramid fiber, polytetrafluoroethylene fiber, glass fiber and activated carbon fiber through the steps of needle punching and heat setting, the outer protective layer is a stainless steel fiber sintered felt layer, as polypropylene fiber has excellent hydrophobicity and lipophilicity, fast oil absorption speed, and large oil absorption capacity, the filter bag body can realize good oil absorption, at the same time the adsorbability of activated carbon fiber is utilized to reachan absorption effect on pigment molecules in filtrate, thus realizing good decolorizing performance of the filter bag, also by adding glass fiber, the inner adsorption layer can be used continuouslyat 260DEG C, meanwhile the inner adsorption layer can have good acid resistance and high folding and tensile strength, thereby improving the high-temperature resistance and corrosion resistance of theprepared filter bag.

Description

technical field [0001] The invention belongs to the technical field of filter bag preparation, in particular to an oil-absorbing decolorization filter bag and a preparation method thereof. Background technique [0002] Classification of filter bags: mainly includes two categories: liquid filter bags and air filter bags. Perfectly meet the application in various fields, the filter bag made of polytetrafluoroethylene, has a good filtering effect, tetrafluoroethylene, has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stick, electric Insulation and good aging resistance, used as engineering plastics, polytetrafluoroethylene has the characteristics of high temperature resistance, its friction coefficient is extremely low, so it can be used not only for lubrication, but also for corrosion resistance with high performance requirements Pipelines, containers, pumps, valves, and radar, high-frequency communication equipment, radio equipment, et...

AI Technical Summary

Problems solved by technology

[0005] In the preparation process of existing filter bags, the filter bag material is made into a filter bag body and then cut. Due to the large volume of the filter bag material, the preparation of the filter bag body is difficult, time-consuming and laborious. The waste is serious, and the cutting of the formed filter bag needs to be manually operated, resulting in high labor intensity for the operator;

[0006] The existing filter bag body is usually provided with a filter bag frame at both ends of the filter bag body to support and protect the filter bag body, but the filter bag frame at both ends of the filter bag body cannot provide good support for the bag surface of the filter bag body Protective effect, causing the filter bag body to be easily damaged during use;

[0007] The existing filter bag body has a single filtering function and a narrow scope of application. Usually, it cannot effectively filter the oil and pigment collected in the solution, which has great limitations.

Images