The filter material of glass fiber coated dust bag is a new type of filter material with high efficiency, low resistance, high filtering precision and long life. Its superior function is incomparable by ordinary filter material. At present, it has been widely used in steel, cement, ferroalloy and carbon black, and the effect is excellent. Glass fiber coated filter material is a high temperature resistant filter bag, that is to say the high temperature resistance is the minimum function of glass fiber coated filter material, but the adhesive adhesive has been dissolved when the temperature is over 80 C. At the moment, it will present a series of severe consequences, such as the film covering off, the increase of resistance and so on, and the hot pressing glass fiber film mulching. The filter material (using the PTFE microporous membrane on the glass fiber base cloth with high temperature and hot pressing skills, without using any adhesive during the production process) can operate continuously under the environment of less than 260 degrees C, and its function will not be changed any more. Because of the particularity of the application places of the glass fiber coated dust bag, the quality of the glass fiber covered filter material is very important. The following is a summary of how to identify the quality problems of the glass fiber coated filter material under the condition that there is no special equipment. Intuitive identification of the samples provided by the manufacturer: 1. Feel. The feeling of glass fiber coated filter material produced by hot pressing skills is very slippery, and the appearance of the adhesive glass fiber coated filter material is obviously moist, although the wetting sense of each production plant is different, however, the feeling of the two materials is significantly different in any case. 2. The adhesive 90% of the adhesive glass fiber coated filter material is the general organic solvent type adhesive used, so if the glass fiber coated filter material is soaked in the organic solvent, the adhesive can be lost, then the film can be easily removed from the glass fabric, and the common organic solvent is available. Benzene, ketones, lipids and other organic solvents.
3, the use of adhesive glass fiber film filter material can not withstand high temperature characteristics, can be heated to about 100 degrees, then the PTFE microporous membrane can be uncovered from the glass fiber base cloth, and the hot pressed glass fiber film filter material can not be uncovered at the temperature of 300.
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