Debondable adhesive

A two-part adhesive formulation, comprising:

• a first formulation comprising a first crosslinker having a reactive functionality of two or more and having incorporated programmable linkages made from Diels-Alder adducts;
• and
• a second formulation comprising a second crosslinker having a reactive functionality of two or more and capable of reacting with the first crosslinker, and wherein one or both of the first and second formulations comprise a concentration of diene traps,
• wherein the programmable linkages comprise one or more diene-dienophile pairs capable of forming the Diels-Alder adducts;
• the diene traps are (i) latent alkenes or (ii) selected from functional groups that will react with the one or more dienes to create diene-diene trap adducts that remain stable until dissociated at a debondable temperature, wherein moles of the diene trap exceed moles of the one or more dienes;
• after combination of the first and second formulations, the combined adhesive formulation has a bonding temperature between 30° C. and 150° C.;
• the debondable temperature of the combined adhesive formulation is above 130° C., wherein when the combined adhesive formulation is at or above 130° C., at least a portion of one or both the programmable linkages and the diene-diene trap adducts disassociate and an adhesive bonding force is reduced;
• and
• the combined adhesive formulation includes non-programmable linkages that do not disassociate at the debondable temperature.

A method of forming a debondable adhesive, the method comprising:

• forming a multifunctional crosslinkable polymer including a concentration of dienes, dienophiles, and diene traps, wherein:
• the diene and dienophile react to form a first Diels-Alder adduct;
• the diene trap is (i) a latent alkene or (ii) selected from functional groups that will react with the diene to create diene-diene trap adducts that remain stable until dissociated at a debondable temperature of the adhesive;
• moles of the diene trap exceed moles of the diene;
• a presence of the diene-diene trap adduct is dominant at a bonding temperature of the adhesive;
• a retro Diels-Alder reaction of both the first and the second Diels-Alder adduct is dominant at a debondable temperature of the adhesive and an adhesive bonding force is reduced;
• the bonding temperature is between 30 degrees Celsius and 150 degrees Celsius;
• the debondable temperature is a temperature at or above 150 degrees Celsius;
• and
• the multifunctional crosslinkable polymer includes linkages that do not disassociate at the debondable temperature.