Nanofiber filter roving is a multifilament composed of thousands or even tens of thousands of monofilaments. In principle, the test of tensile properties is similar to that of high linear density industrial multifilament. In a typical tensile test, an appropriate fixture is used. However, the nanofiber filter membrane has a very high modulus, the tension of each monofilament is different, and the material is brittle, resulting in the strength value measured by this method is only about half of the actual strength of the material, that is, the average strength of each monofilament half. We can use instruments to test it in accordance with international standards. Let's talk about it in detail below.

In the test, the roving must be impregnated with a suitable resin first, and the roving must be compounded with a paper sheet in the second step to avoid damage to the chuck. This process is very time-consuming, because the resin must be fully cured before the test, which takes 24 hours a day. 24 hours is still a long time, especially for industrial production, one moment can not be delayed. Some companies have machines that work all day and night.

There is another method, which is to test each fiber, namely single fiber. This method may seem more complicated at first glance, but it is easy to carry out with a specific instrument. Now that the technology is so advanced, the instrument for testing nanofiber membranes has also been developed to a high level that can automatically complete this task. The main advantage of single fiber testing as a production control method is that the laboratory can get the required results within a few minutes after receiving the samples, and take timely action to correct fiber defects.

The most basic nanofiber filter membrane materials include short fibers, felts, belts, etc., in addition to roving, all of which play a very important role. After a little processing, common products such as nanofiber filter membrane tube, nanofiber filter cloth, and nanofiber filter membrane are made. As an emerging material, nanofiber filter membrane is very popular. I believe that there will be new products coming out in the future.