Silicon-oxy-carbide glass method of preparation and articles

A translucent glass comprising silicon, oxygen, and carbon wherein about 73 to 83 percent of the silicon atoms have at least one bond to a carbon atom forming a silicon-oxy-carbide glass.

A process for forming a translucent glass comprising, heating a methyl silicone precursor resin comprised of M and Q units in a ratio of about 0.7:1 or greater in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, said heating being performed for a period of time ending when weight loss from the pyrolizing resin substantially stabilizes;

• said pyrolized resin forming a translucent silicon-oxy-carbide glass.

A translucent glass fibre comprising;

• an amorphous mass of silicon, oxygen, and carbon in a distribution of polyatomic units comprising, in weight percent, about 18 to 28 percent tetraoxysilicon, about 21 to 31 percent monocarbosiloxane, about 12 to 22 percent dicarbosiloxane, about 28 to 38 percent tetracarbosilicon.

A composite ceramic comprising;

• at least one ceramic fibre, a ceramic filler, and a matrix of silicon-oxy-carbide glass binding the fibre and filler, the glass comprising silicon, oxygen and carbon in a distribution of polyatomic units comprising, in weight percent, about 18 to 28 percent tetraoxysilicon, about 21 to 31 percent monocarbosiloxane, about 12 to 22 percent dicarbosiloxane, and about 28 to 38 percent tetracarbosilicon.

A translucent glass comprising chemically bonded silicon, oxygen, and carbon with the glass substantially free of chemical bonding between oxygen and carbon atoms, the glass being produced by a process comprising:

• heating a methyl silicone precursor resin comprised of M and Q units in a ratio of about 0.7:1 or greater, in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, said heating being performed for a period of time ending when weight loss from the pyrolizing resin substantially stabilizers.

A glass comprising chemically bonded silicon, oxygen, and carbon with the glass substantially free of chemical bonding between oxygen and carbon atoms, the glass being produced by a process comprising:

• heating a methyl silicone precursor resin comprised of M and Q units in a ratio up to about 0.7:1, in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, said heating being performed for a period of time ending when weight loss from the pyrolizing resin substantially stabilizes.

A process for forming a glass comprising:

• heating a methyl silicone precursor resin comprised of M and Q units in a ratio up to about 0.7:1, in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, said heating being performed for a period of time ending when weight loss from the pyrolizing resin substantially stabilizes;
• said pyrolized resin forming a silicon-oxy-carbide glass.

A cellular glass structure comprising:

• chemically bonded silicon, oxygen, and carbon in a cellular glass structure having a distribution of polyatomic units comprising in weight percent about 18 to 28 percent tetraoxysilicon, about 21 to 31 percent monocarbosiloxane, about 12 to 22 percent dicarbosiloxane, about 28 to 38 percent tetracarbosilicon, and up to 1 percent elemental carbon dispersed in the cellular glass structure.

A cellular glass structure comprising:

• chemically bonded silicon, oxygen, and carbon in a cellular glass structure having a distribution of polyatomic units comprising in weight percent about 38 to 48 percent tetraoxysilicon, about 11 to 21 percent monocarbosiloxane, about 11 to 21 percent dicarbosiloxane, about 12 to 22 percent tetracarbosilicon, and up to about 9 percent elemental carbon dispersed in the cellular glass structure.

A glass composition that remains structurally stable at temperature up to abut 1650.degree. C. comprising;

• silicon, oxygen, and carbon in a distribution of polyatomic units comprising in weight percent about 34 to 48 percent tetraoxysilicon, about 11 to 29 percent monocarbosiloxane, about 11 to 27 percent dicarbosiloxane, up to about 22 percent tetracarbosilicon, and up to about 9 percent elemental carbon dispersed in the glass matrix.

A glass composition that remains structurally stable at temperature up to about 1650.degree. C. comprising;

• silicon, oxygen, and carbon wherein about 52 to 64 percent of the silicon atoms have at least one bond to a carbon atom, and up to abut 9 weight percent carbon is present as elemental carbon dispersed within the glass matrix, forming a silicon-oxy-carbide glass.

A process for forming a glass, comprising heating a methyl silicone precursor resin from the group consisting of MQ resins and DT resins, in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, said heating being performed for a period of time ending when weight loss from the pyrolizing resin substantially ends;

• said pyrolizing resin forming a silicon-oxy-carbide glass that remains structurally stable at temperatures up to about 1650.degree. C.

A glass fibre comprising;

• silicon, oxygen, and carbon in a distribution of polyatomic units comprising in weight percent about 38 to 48 percent tetraoxysilicon, about 11 to 21 percent monocarbosiloxane, about 11 to 21 percent dicarbosiloxane, about 12 to 22 percent tetracarbosilicon, and up to about 9 percent elemental carbon dispersed in the glass matrix.

A composite ceramic comprising;

• at least one ceramic fibre, a ceramic filler, and a matrix of silicon-oxy-carbide glass binding the fibre and filler, the glass comprising silicon, oxygen, and carbon in a distribution of polyatomic units comprising in weight percent about 34 to 48 percent tetraoxysilicon, about 11 to 29 percent monocarbosiloxane, about 11 to 27 percent dicarbosiloxane, up to about 22 percent tetracarbosilicon, and up to about 9 percent elemental carbon dispersed in the glass matrix.