Heat resistant material for molds and other articles
OwnerCharles F. Inglefieldinventor
Life of this patent
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Abstract
A mixture of particulate silicone based material and small hollow elements, such as spheres and/or fibers, is provided. The particulate silicone based material is heated to a temperature between about 200° F. and about 400° F. The particulate silicone based material is cooled until a solid body is formed. The solid body is resistant to melting and thermal decomposition when heated to temperatures of at least 3000° F. The solid body may contain cavities formed by the small hollow elements. The solid body may contain reinforcing fibers. The solid body may contain both small hollow elements and fibers.
Claims79
A method of forming a heat resistant body, said method comprising the steps of:
- providing a mixture of particulate silicone based material and small elements which are hollow,
- heating the mixture of particulate silicone based material and small elements which are hollow to a temperature between about 200° F. and 400° F., and
- cooling the particulate silicone based material until a solid body is formed, said solid body contains cavities which were formed in the particulate silicone based material by the small elements, said solid body being resistant to melting and thermal decomposition when heated to temperatures of at least 3000° F.
A method of forming a heat resistant body, said method comprising the steps of:
- forming a first layer of particulate silicone based material,
- forming a second layer containing a mixture of particulate silicone based material and small hollow spheres adjacent to the first layer,
- forming a third layer of particulate silicone based material adjacent to the second layer,
- heating the first, second, and third layers to a temperature between about 200° F. and 400° F., and
- cooling the first, second, and third layers until a solid body is formed, said solid body being resistant to melting and thermal decomposition when heated to a temperature of at least 3000° F.
A method of forming a heat resistant body, said method comprising the steps of:
- at least partially covering fibers with a silicone based material,
- heating the silicone based material and the fibers to a temperature between about 200° F. and 400° F. while the silicone based material at least partially covers the fibers, and
- cooling the silicone based material until a solid body containing the fibers is formed, said solid body being resistant to melting and thermal decomposition when heated to a temperature of at least 3000° F.
A method of forming a heat resistant body, said method comprising the step of
- at least partially covering small elements which are hollow with a silicone based material,
- at least partially covering fibers with the silicone based material,
- heating the small hollow elements, fibers, and silicone based material to a temperature between about 200° F. and 400° F. while the small hollow elements and fibers are at least partially covered by the silicone based material, and
- cooling the small hollow elements, fibers, and silicone based material until a solid body is formed, said solid body being resistant to melting and thermal decomposition when heated to a temperature of at least 3000° F.
Dependencies are inferred from the claim text.