As one of the important basic industries, the rubber product industry is not only widely used in the industrial field, but also in daily life, cultural and sports activities, medical and health care, etc. The demand for rubber products in various industries has surged, and the overall market has steadily increased.

 

As a big family of rubber products and a member of the field of silicone tubes, silicone foam tubes are also very common products. It belongs to extruded silicone, which is a soft elastic material formed by mixing silicone raw materials and foaming agent in proportion, and then vulcanized at high temperature. Due to the large amount of air generated during vulcanization, a large number of small pores are generated inside.

Silicone foam tube mainly plays a sealing role, and can also be called silicone sponge tube, etc. It is characterized by high and low temperature resistance, good elasticity, and is not easy to produce qualitative changes. It also has excellent insulation, aging resistance, oxidation resistance, and physiological inertia. wait. Silicone rubber foam tubes and conduits are widely used in construction, automobiles, ships, door and window sealing, wire and cable and other parts and other industrial products.
Facing the increasing demand for silicone foam products, how to distinguish them from good or bad? Choose the right product?


1. Touch: The silicone foam tube is soft and elastic, and can be touched directly by hand to check the resilience of the product, which is also one of the basic methods.

2. Section: Cut the silicone foam tube with scissors, carefully observe and leave it for a period of time, so that the cut section is partially bent, but not completely flat. The higher arc is due to the higher rubber content, especially after high temperature vulcanization, the finished product will be more obvious.

3. Fire: Cut out a small piece of silicone foam tube, clamp it with tweezers or scissors, and then light it with fire to see if the smoke that comes out is pure white or mostly white. After burning, look at the rest Gray is white or light gray. The ashes produced by the smoke of good-quality silicone foam tubes during and after combustion are white or gray, and there is no obvious pungent smell. This judgment method should pay attention to fire safety and be carried out in a ventilated environment.

In short, poor-quality silicone foam tubes have rough surfaces, poor strength, and poor resilience. The pore size is small and fine and uniform, light weight, good elasticity, good stability, and no peculiar smell.


About foamed silicone, please check the details:
https://www.siliconefoam.net/product-iota-f663a,b-liquid-silicone-rubber-foam-.html