At present, the quality of glass fiber coated filter media sold on the domestic market is mixed, and 90% of them are adhesive glass fiber coated membrane dust removal filter media (the PTFE microporous membrane is glued on the glass fiber base cloth with an adhesive). Poor function, it can be said to be a pure fake, has caused serious losses to many users, because the user knows little about the knowledge of glass fiber membrane filter, can not identify the true and false glass fiber membrane filter.
The filter material of fiberglass film dust removal bag is a new type of filter material with high efficiency, low resistance, high filtration accuracy and long life. Its superior function is unmatched by general filter materials. Currently, it is used in steel, cement, ferroalloy, carbon black. Occupations have been widely adopted and their results have been excellent. Glass fiber membrane filter is a high temperature dust filter bag, which means that the high temperature resistance is the minimum function of the glass fiber membrane filter, but the adhesive glass fiber membrane filter is sticky when the temperature is above 80°C. The combined adhesive has dissolved and will present a series of severe consequences such as film peeling, resistance increase, and hot-pressed glass fiber coated filter media (using high-temperature hot-pressing techniques to laminate PTFE microporous membranes on glass fiber based substrates. On the cloth, no adhesive is used in the production process. It can operate continuously in an environment of 260°C or less and its function will not change.
Because of the particularity of the place where the fiberglass film dust collection bag is used, the discrimination of the quality of the fiberglass film dust removal filter becomes very important. The following Xiaobian summarizes how to identify the glass fiber membrane filter without special equipment. The quality of the material. The
First, make intuitive identification methods for the sample provided by the manufacturer:
1, feel. The fiberglass coated filter material produced by the hot-pressing technique has a very smooth feel, while the appearance of the adhesive glass fiber coated film filter has a distinctly wet feel. Although the degree of moisture feeling of the products of various manufacturers is not the same, How the feel of these two materials are significantly different. The
2. 90% of the adhesive used for adhesive glass fiber coated membrane filter is general organic solvent type adhesive. Therefore, if the glass fiber covered filter media is placed in organic solvent and soaked slightly, the adhesive can be lost. At this time, the film can be easily peeled off from the glass fiber base fabric. Commonly used organic solvents include organic solvents such as benzenes, ketones, and lipids.
3, the use of adhesive glass fiber membrane filter material can not be high temperature characteristics, you can heat it to about 100 °C, then you can PTFE microporous membrane from the fiberglass fabric without effort, and Hot-pressed glass fiber membrane filter can not be peeled off at a temperature of 300°C.