Self-heating thermal interface material
A self-heating thermal interface material (TIM) may be formed using heating components dispersed within the TIM. The heating components may produce heat when the TIM is compressed. The heating components may be formed from microcapsules and the microcapsules may contain exothermic reactants. The reactants may be isolated from contact within the microcapsule until a compressive force is applied.
1. A self-heating thermal interface material (TIM), the self-heating TIM comprising:
a TIM; and
at least one heat producing component dispersed within the TIM, wherein the at least one heat producing component further comprises:
at least one first microcapsule, the at least one first microcapsule having an outer shell, the outer shell forming a boundary between the TIM and contents of the at least one first microcapsule, the outer shell configured to sustain application of a compressive force without rupturing;
at least one first reactant and an at least one second reactant contained within the outer shell; and
at least one isolating structure within the outer shell, the at least one isolating structure preventing the at least one first reactant and the at least one second reactant from coming into contact when the compressive force is not applied, the at least one isolating structure configured to rupture when the compressive force is applied, the rupturing causing the at least one first reactant and the at least one second reactant to come into contact, the contact producing an exothermic reaction, the heat from the exothermic reaction transferring to the TIM.
2. The self-heating TIM of claim 1 wherein the TIM is selected from the group consisting of:
a phase-change TIM;
a silicone based TIM;
an acrylate based TIM; and
a mixture including any of a phase-change TIM, a silicone based TIM, and an acrylate based TIM.
3. The self-heating TIM of claim 1 wherein the at least one isolating structure is at least one second microcapsule, the at least one first microcapsule contains the at least one first reactant and the at least one second microcapsule, and the at least one second microcapsule contains the at least one second reactant.
4. The self-heating TIM of claim 1 wherein the at least one first reactant is hydrogen peroxide and the at least one second reactant includes iron and ferric nitrate.
5. The self-heating TIM of claim 1 wherein the at least one isolating structure is at least one membrane, the at least one membrane separating two or more compartments of the first microcapsule, and wherein the at least one first reactant is contained within a first compartment and the at least one second reactant is contained within a second compartment.
6. The self-heating TIM of claim 1 wherein the at least one first reactant and the at least one second reactant are inert with respect to one or more of the TIM, the microcapsule, and the isolating structure.
7. The self-heating TIM of claim 1 wherein one or more of the TIM, the microcapsule, and the isolating structure are inert with respect to one or more products of the exothermic reaction.