Silicon synthetic polymers, advantage

In the case of flame retardant silicone elastomer, many ingredients such as silica, platinum, and other flame retardant agents are incorporated into the base siloxane polymer. But there is no need to use the halogenated flame retardant agent, for example, bromine or chlorine compounds. This difference is an advantage of silicones compared with other synthetic polymers in terms of health and safety. 

An important question of mask design is the composition of the elastic material used to cover the face the faceblank. The first masks introduced in World War I were made of rubberized cloth or leather. Subsequent masks used natural rubber, but recently, sophisticated synthetic polymers using silicone, butyl, and perfluorocarbon rubbers have been used.6 Silicone rubber has the advantage of making possible a tight fit or seal between the mask and skin, with a correspondingly decreased potential for leaking (a factor said to be responsible for about 5% of mask failures).12... 

Lubricants which are not based on petroleum are classed as synthetic and include silicones, poly glycols, polyphenyl ethers, fluoro compounds, chlorofluorocarbon polymers, and phosphate esters. The major advantage of these fluids is that they are tailor-made for a specific function and usually require few additives. 

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