Silicone heat shrink tubing

Silicone heat shrink tubing: Is there any difference between silicone heat shrink tubing and silicone rubber heat shrink tubing?

it's the same.

EVA is blended with silicone rubber and other polymers to make high temperature resistant materials. Silicone rubber heat shrink tubing is made by blending EVA, methyl vinyl silicone rubber, EPDM, flame retardant and other raw materials. Combining the advantages of silicone rubber and heat shrink tubing, it is flame retardant, heat resistant, oil resistant, solvent resistant, and has good electrical insulation properties.

I used to use PE heat-shrinkable tubes. I heard that silicone rubber heat-shrinkable tubes are very good, but I don’t know what advantages they have compared with ordinary heat-shrinkable tubes?

Silicone rubber (SiliconeRubber) is a kind of polymer elastic material with both inorganic and organic properties. Its molecular main chain is composed of silicon atoms and oxygen atoms alternately (—Si—O—Si—), and the side chain is connected with silicon atoms. Hydrocarbon or substituted hydrocarbon organic groups, this group can be methyl, unsaturated vinyl or other organic groups, this low unsaturation molecular structure makes silicone rubber have excellent heat aging resistance and Weather resistance, UV and ozone resistance. Molecular chains have great flexibility and weak interaction between molecular chains. These structural features make the vulcanizate soft and elastic, but its physical properties are poor.

Among all rubbers, silicone rubber has the widest working temperature range (-～℃).

Silicone heat-shrinkable tube has excellent resistance to ozone aging, oxygen aging, light aging and weather aging; the electrical insulation performance of silicone rubber vulcanizate changes little when it is affected by moisture, frequency changes or temperature rises, and the silicon dioxide formed after burning remains unchanged. for the insulator. The special surface properties and physiological inertness of the silicone rubber heat shrinkable tube are superior to ordinary PE heat shrinkable tubes.