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Ahead to Silicone 2. Organic Silicones
Dr. Eugene Rochow expanded on these simple concepts to envision a material called a silicone polymer. From Rochow's concepts came the development of silicone rubber and products made from silicone rubber.
You can see the system of triangles and other geometric shapes in the diagrams to the right. What a complex task we are asking you to accomplish! First, we try to represent three dimensions on a planar screen or piece of paper. Then we ask you to see oxygen atoms at corners and silicon atoms floating in the supposed cavity in the two dimensional representation of the three dimensional space.
But, you are up to it! Our marvelous intellectual powers guide us in treating these symbolic representations as real!
Heat and Chemical
Resistant Silicone Rubber
This is the story of chemical transition from the common silicate minerals and rocks of the earth to the uncommon chemical compounds of silicon and carbon.
We remember also, that we find thousands of silicate minerals on and under the surface of the earth. If we look at neighboring tetrahedra in these minerals, some neighbors share a single oxygen with their neighbor, others share two oxygens with the neighboring tetrahedron.
When these chemists began to make new silicon containing chemical species, they learned to form bonds of silicon with hydrogen: Si-H, and with the halogens: Si-F, Si-Cl, Si-Br, Si-I. Silicon compounds containing these bonds were remarkably different from the rocky mineral silicates. SiH4 was a gas, as was SiF4, SiCl4 was a liquid with a low boiling point. And silicon hydrides and silicon halides were not stable out in the humid air in the room. They reacted immediately with water, with moisture in the air, to form compounds with the favored Si-O-Si-O- sequence of atoms.
And in Germany, Russia, Sweden and France, other chemists began to make new chemical compounds with silicon directly bound to carbon. They began to build an inventory of new, uncommon materials. In contrast to the Si-H and Si-X (X=F, Cl, Br, I) that reacted so rapidly with water, compounds with Si-C bonds were quite stable.
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