Flexible Elastomeric Heat Insulating And Flame-Retardant Material And Preparation Methods Thereof

A flexible elastomeric material comprising:

• a. at least one siloxane gum in an amount selected from the group consisting of:
• from about 30-60% by weight (w/w), from about 38-48% by weight (w/w), from about 42% by weight (w/w), from about 41% by weight (w/w) and combinations thereof, of said flexible elastomeric material;
• b. at least one silica reinforcing filler in an amount selected from the group consisting of from about 5-30% w/w, from about 10-20% w/w, 12% w/w and combinations thereof;
• c. at least one silica extending filler selected from the group consisting of from about 0-50% w/w, from about 0-30% w/w and combinations thereof;
• d. at least one viscosity control agent in an amount selected from the group consisting of:
• from about 0.5-10% w/w, from about 0.5-5% w/w, from about 0.5-30% w/w, 2% w/w, 2.1% w/w and combinations thereof;
• e. at least one flux agent in an amount selected from the group consisting of:
• from about 1-25% w/w, from about 3-15% w/w, from about 1-5% w/w, 6% w/w and combinations thereof;
• f. at least one glass fibre filler in an amount selected from the group consisting of:
• from about 5-40% w/w, from about 5-15% w/w, 8% w/w and combinations thereof;
• g. at least one hydrous aluminum silicate filler in an amount selected from the group consisting of:
• from about 5-30% w/w, 5-20% w/w;
• 17% w/w, 16% w/w and combinations thereof;
• h. at least one silicon carbide filler in an amount selected from the group consisting of:
• from about 20-40% w/w, from about 5-15% w/w, 12% w/w and combinations thereof;
• and
• i. at least one peroxide crosslinker in an amount selected from the group consisting of:
• from about 0.1-0.6% w/w, from about 0.2-0.4% w/w, 0.3% w/w and combinations thereof,
• wherein components a, b, and c form a siloxane base of the flexible elastomeric material.

A process for manufacturing a flexible elastomeric material, comprising:

• a. mixing a siloxane gum with a viscosity control agent;
• b. dispersing a silica reinforcing filler into the mixture to form a siloxane base;
• c. adding a flux agent, a glass fibre filler, a hydrous aluminum silicate filler, and a silicon carbide filler;
• d. mixing the components of step c;
• e. adding a peroxide crosslinker;
• f. forming the mixture of step e into a sheet;
• g. molding the sheet under pressure;
• and
• h. cooling and post-curing.