Silicone based compositions for thermal interface materials
AssigneeArlon, Inc.
InventorsNathan Andrew Cloud, David C. Timpe, Haibing Zhang
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Abstract
A device is provided herein which comprises first (203) and second (207) substrates, and a composition (205) disposed between the first and second substrates. The composition comprises a continuous phase and a disperse phase, wherein said continuous phase comprises a partially crosslinked polyorganosiloxane having a polymer backbone, and wherein the number of monomeric units in the polymer backbone is within the range of about 2,000 to about 15,000.
Claims25
A device, comprising:
- first and second substrates;
- and
- a composition disposed between said first and second substrates, said composition comprising a continuous phase and a disperse phase;
- wherein said continuous phase comprises a partially crosslinked polyorganosiloxane having a polymer backbone, and wherein the number of monomeric units in the polymer backbone is within the range of about 2,000 to about 15,000.
A device, comprising:
- first and second substrates;
- and
- a composition disposed between said first and second substrates, said composition comprising (a) a polyorganosiloxane, and (b) fumed titanium dioxide coated with a organofunctional functional silane coating.
A device, comprising:
- first and second substrates;
- and
- a composition disposed between said first and second substrates, said composition comprising (a) a polyorganosiloxane, (b) a first filler, and (c) a second filler which is distinct from said first filler.
A method for making a TIM, comprising:
- providing a silicone gum;
- partially crosslinking the silicone gum;
- and
- mixing the partially crosslinked silicone gum with a material selected from the group consisting of extended fillers and reinforcing agents.
A method for producing a filled polymer, comprising:
- mixing a polyorganosiloxane with a primary filler;
- where wpfiller is the mass of primary filler employed in the composition and is given by the equation
- w
- pfiller
- <
- 1
- 6
-
- π
- 1
- -
- 1
- 6
-
- π
-
- p
- pfiller
- p
- silicone
-
- w
- silicone
- wherein wsilicone is the mass of polyorganosiloxane in the composition, wherein ppfiller is the density of the primary filler, wherein psilicone is the density of the polyorganosiloxane, and wherein wpfiller, wsilicone>0.
Dependencies are inferred from the claim text.