With the development of science and technology, people have put forward more stringent requirements for some materials and performance. Therefore, many excellent new materials are emerging in an endless stream, and the first one to bear the brunt is PTFE biaxial stretching with outstanding comprehensive performance. Membrane is a polymer material.
There are two main methods for preparing ptfe biaxially oriented film that have been reported so far.
One is to add the pore-forming agent NaCl to PTFE, then make the PTFE into a film, and then remove the NaCl by heating and washing with water. The vacancies left by the NaCl form pores. The microporous film made by this method has the smallest pore size. is 0.1μm.
The second is the mechanical stretching method. The microporous film made by the modified method has a special structure of island-like “knots” connected by microfibers. It is currently the main method for preparing PTFE microporous films.
In the entire production process of stretched microporous membranes, stretching conditions are very important influencing factors. They will affect the thickness of the microporous membrane, average pore diameter, and maximum pore diameter and other indicators related to pore performance. is a manufacturer specializing in the production of ptfe biaxially oriented membrane materials. In the field of industrial sewage treatment, we have the characteristics of “uniform and stable, high efficiency and low resistance, long life, customizable, easy cleaning and maintenance” and are accepted and loved by the majority of enterprises.
Our company has a complete set of domestically advanced production lines, and our company can produce products according to user requirements.
The optimized combination of key technical parameters such as speed ratio, pressure ratio, operating temperature, etc. can realize online control of air permeability, thickness and void ratio according to the ratio and pore-forming medium to meet the different requirements you need. .
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