Heat-resistant foamed silicone strip is a new type of energy-saving product developed on the basis of extensive use of machinery, and is an important part of every part of the machinery. The extruded silicone foam strips are mostly the same size. There are also some foam silicone sheets that undergo secondary processing, such as die-cutting and bonding, to form desired rings, special shapes, animal shapes, etc. It should be noted that foamed silica gel at room temperature can be divided into hot melt adhesive and RTV silica gel. The former is heated and formed by a silicone bonding machine, which has the characteristics of small bonding marks and high speed. The latter is directly bonded without treatment, and is suitable for the mutual bonding of large-area foamed silicone materials, or the bonding of foamed silicone strips to metal plastics and other substrates.
How to judge the quality of foamed silicone strips? Let's take a look together:


1. The elasticity of the foamed silicone strip. This can be felt directly by hand, which is also one of the basic methods.


2. The smell of the foamed silicone strip. If it is a silicone rubber strip foam product made of high-quality silicone raw materials, the smell is usually only sour or the taste is not obvious.


3. The cross-section of the foamed silicone strip. Cut off the silicone tube product with scissors, observe carefully and leave it for a period of time, the cut surface forms a curve, but not completely flat. The higher the radian, the higher the gel content of the product (the so-called gel content, the simple explanation is that it contains collagen. Usually, the vulcanizing agent and mixed raw material parts of silicon foam products are produced through a series of reactions in a high temperature environment of). Especially the finished product after high temperature vulcanization is more obvious.


4. Check the quality of the foamed silicone strips from the observation of burning smoke. You can cut a piece of silicone foam product, use tweezers or scissors, light it with a lighter or a match, observe whether the smoke released after burning is pure white or mostly white, and then observe whether the burned ash is white or light gray. The ashes produced by burning high-quality foam silicon fume are white or gray, and have no obvious pungent smell.


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