The liquid silicone soaked in the outer braided glass fiber silicone tube or the silicone applied must be consistent with the vulcanization system of the inner tube, otherwise there will be mutual repulsion and non-vulcanization. At this stage, most companies use the platinum vulcanization system. The advantage is that it is stable and odorless . , so when the outer braided glass fiber silicone tube is produced, it is necessary to use the same vulcanization process as much as possible.
Ordinary silicone braided tubes are three major steps after extruding the inner tube and then weaving and then extruding the outer tube. The process of extruding the inner tube is the same as the production of ordinary silicone tubes, but there are some differences between the two in terms of weaving. Take a product at hand and compare it, and you can see that the middle layer of the conventional silicone braided tube is relatively thin, showing a diamond-shaped weave, and most of them are transparent, which can be seen through by the naked eye. If the outer braided glass fiber silicone tube has contact, you can know that the braid on the surface is very dense. If you use the all-round wrapping method, you cannot see the inner tube. The reason for this is also because the braid is not dense enough. Under the high pressure of steam equipment, there will be a series of problems such as bloating and rupture, but the full-wrapped weaving will not appear the image of bulging at first. Therefore, the difference between the two is quite large. The surface of the outer braided glass fiber silicone tube is densely covered with the inner tube, while the braiding of the conventional silicone braided tube is much rarer (with the assistance of the outer tube, it is not necessary if the requirements are met. very densely woven).
Conventional silicone braided tubes are as follows:
The actual shot of the outer braided glass fiber silicone tube is as follows:
Another difference is that it is easy to see that the outer braided glass fiber silicone tube does not have an outer tube, but a relatively alternative dip-coating process is used after weaving. The reason for this is that the braided fabric will easily fall off and loose if it is not handled properly, or Due to the high temperature and high pressure of the steam equipment, the use efficiency of the braid is reduced. Under these various reasons, the braided glass fiber silicone tube needs to be dipped in a process to wrap a layer of liquid silicone on the outside of the braid so that it can withstand conventional high temperature. The conventional braided tube will also extrude the outer tube after weaving. The difference here is that one uses dip coating and the other uses re-extrusion. Because of the re-extrusion, the braid will be wrapped in the inner tube and the outer tube. Because ordinary people can't touch the braid because of the protection of the outer tube, no matter how much you kink the braid, it will not move at all and will not loosen and fall off for a series of reasons.