Foam, composition, and method
A method of producing a foam is disclosed. The method includes providing an epoxy-containing compound, a cationic catalyst, an optional blowing agent, and at least one additive. The method further includes combining the epoxy-containing compound with the cationic catalyst, the optional blowing agent, and the at least one additive, wherein the epoxy-containing compound and the cationic catalyst react to polymerize the epoxy-containing compound to provide the foam having a density from about 0.3 lbs/ft 3 to about 5.0 lbs/ft 3 as measured by ASTM D1622. Further disclosed are the foam and a method for installing the foam.
1. A foam composition consisting of a resin matrix, wherein the resin matrix consists of an epoxy-containing compound; a cationic catalyst consisting of a superacid, a BF 3 complex, a phosphoric acid derivative, or combination thereof; an optional blowing agent; and at least one additive; wherein the composition is free of an isocyanate compound, the foam having a density from about 0.3 lbs/ft 3 to about 5.0 lbs/ft 3 as measured by ASTM D1622.
2. The foam of claim 1 , wherein the epoxy-containing compound is bio-based, petrochemical based, or combination thereof.
3. The foam of claim 2 , wherein the bio-based epoxy compound is derived from linseed oil, corn oil, soybean oil, sunflower oil, safflower oil, canola oil, rapeseed oil, palm oil, camelina oil, fish oil, tall oil, algae oil, or combinations thereof.
4. The foam of claim 2 , wherein the petrochemical based epoxy-containing compound consists of a cycloaliphatic epoxy compound and an aromatic epoxy compound.
5. The foam of claim 1 , wherein the superacid is HBF 4 , CF 3 SO 3 H (triflic acid), HSbF 6 , HPF 6 , FSO 3 H, HClO 4 , CF 3 (CF 2 )x-SO 3 H, FSO 3 H—SbF 5 (magic acid) or combinations thereof.
6. The foam of claim 5 , wherein the superacid has a pKa of about −8 to about −25.
7. The foam of claim 1 , wherein the additive consists of a surfactant.
8. The foam of claim 1 , wherein the additive consists of a fire retardant.
9. The foam of claim 1 , wherein the additive consists of a co-reactant including a diol, a glycerin, or a combination thereof.
10. The foam of claim 1 , wherein the additive consists of a catalyst carrier.
11. The foam of claim 10 , wherein the catalyst carrier consists of a polyhydroxyl compound.
12. The foam of claim 1 , wherein the cationic catalyst is present at an amount of about 0.05 wt. % to about 5.0 wt. %, based on the total composition.
13. The foam of claim 1 , wherein the blowing agent is present at an amount of about 5.0 wt. % to about 30.0 wt. %, based on the total composition.
14. The foam of claim 1 , wherein the cationic catalyst provides a gel time of about 5 seconds to about 180 seconds.
15. The foam of claim 14 , wherein the cationic catalyst provides a gel time of about 10 seconds to about 50 seconds.
16. A building cavity comprising the foam of claim 1 .
17. A method of installing a foam in a building cavity comprising:
mixing a composition consisting of a resin matrix, wherein the resin matrix consists of an epoxy-containing compound, a cationic catalyst consisting of a superacid, a BF 3 dihydrate complex, or combination thereof, an optional blowing agent and at least one additive to form an epoxy matrix foam composition; and
spraying the foam composition to the building cavity, wherein the foam is isocyanate free and has a density from about 0.3 lbs/ft 3 to about 5.0 lbs/ft 3 as measured by ASTM D1622.
18. The method of claim 17 , wherein the cationic catalyst provides a gel time of about 5 seconds to about 180 seconds.
19. The method of claim 17 , wherein the sprayed foam composition hardens in about 30 seconds to about 5 minutes.
20. The method of claim 17 , wherein the superacid has a pKa of about −8 to about −25.