Carbon phosphonitride polymer additives
Carbon phosphonitride (CPN) including tricyanophosphine (P(CN) 3 ), its pre-polymer (CPN-PP), and/or solid CPN(C 3 N 3 P) can serve as a useful additive for thermoset resins, resulting in improved thermal and mechanical properties.
1. A material comprising:
a thermoset plastic mixed with a carbon phosphonitride (CPN), selected from the group consisting of CPN pre-polymer (CPN-PP), solid CPN (C 3 N 3 P), and combinations thereof, wherein the CPN is present in a range of about 2% to about 49% by weight.
2. The material of claim 1 , wherein the thermoset plastic is in a condition of having been made from phthalonitrile resin, cyanate ester, or epoxy.
3. The material of claim 1 , wherein the CPN pre-polymer (CPN-PP) is formed by reacting PCl 3 in the presence of AgCN and AgNO 3 .
4. The material of claim 1 , wherein the solid CPN(C 3 N 3 P) is formed by heating tricyanophosphine P(CN) 3 from 175° C. to 225° C.
5. A method of making a thermoset material, the method comprising:
combining a carbon phosphonitride (CPN) selected the group consisting of CPN pre-polymer (CPN-PP), solid CPN(C 3 N 3 P), and combinations thereof, with a resin to form a composite; and
allowing the composite to cure into a thermoset material incorporating the CPN, wherein the CPN is present in a range of about 2% to about 49% by weight.
6. The method of claim 5 , wherein the resin is selected from the group consisting of phthalonitrile resin, cyanate ester, or epoxy.
7. The method of claim 5 , wherein the CPN pre-polymer (CPN-PP) is formed by reacting PCl 3 in the presence of AgCN and AgNO 3 .
8. The method of claim 5 , wherein the solid CPN(C 3 N 3 P) is formed by heating tricyanophosphine P(CN) 3 from 175° C. to 225° C.