Phenol resin foam
There is disclosed a phenol resin foam comprising a phenol resin, a hydrocarbon having 6 or less carbon atoms, and at least one halogenated hydroolefin selected from the group consisting of hydrofluoroolefins and hydrochlorofluoroolefins, and the phenol resin foam having the density of 10 kg/m 3 or more and 150 kg/m 3 or less, wherein the sum of the content of the hydrocarbon having 6 or less carbon atoms and the content of the hydrogenated hydroolefin is from 0.23 to 0.90 mol, the content of the hydrocarbon having 6 or less carbon atoms is from 0.03 to 0.85 mol, and the content of the halogenated hydroolefin is from 0.05 to 0.85 mol, per 22.4×10 −3 m 3 of spatial volume in the phenol resin foam.
1. A phenol resin foam comprising a phenol resin, a hydrocarbon having 6 or less carbon atoms, and at least one halogenated hydroolefin selected from the group consisting of hydrofluoroolefins and hydrochlorofluoroolefins, and the phenol resin foam having a density of 10 kg/m 3 or more and 150 kg/m 3 or less,
wherein a sum of a content of the hydrocarbon having 6 or less carbon atoms and a content of the halogenated hydroolefin is from 0.23 to 0.90 mol, a content of the hydrocarbon having 6 or less carbon atoms is from 0.03 to 0.85 mol, and a content of the halogenated hydroolefin is from 0.05 to 0.85 mol, per 22.4×10 −3 m 3 of spatial volume in the phenol resin foam.
2. The phenol resin foam according to claim 1 , wherein the halogenated hydroolefin comprises at least one selected from the group consisting of 1-chloro-3,3,3-trifluoropropene, 1,3,3,3-tetrafluoropropene, and 1,1,1,4,4,4-hexafluoro-2-butene.
3. The phenol resin foam according to claim 1 , wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms and the halogenated hydroolefin is from −15° C. to 48° C.
4. The phenol resin foam according to claim 1 , wherein the hydrocarbon having 6 or less carbon atoms comprises pentane and/or pentene.
5. The phenol resin foam according to claim 2 , wherein the halogenated hydroolefin is 1-chloro-3,3,3-trifluoropropene.
6. The phenol resin foam according to claim 5 , wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms and the 1-chloro-3,3,3-trifluoropropene is from 15° C. to 45° C.
7. The phenol resin foam according to claim 5 , wherein the hydrocarbon having 6 or less carbon atoms comprises pentane and/or pentene.
8. The phenol resin foam according to claim 7 , wherein the hydrocarbon having 6 or less carbon atoms comprises 60 to 100 mol % in total of pentane and/or pentene and 0 to 40 mol % of one or two or more selected from hydrocarbons having a boiling point of −50° C. to 5° C., based on a total amount of the hydrocarbon, and
wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms is 0° C. or more and 50° C. or less.
9. The phenol resin foam according to claim 8 , wherein the hydrocarbon having a boiling point of −50° C. to 5° C. comprises isobutane.
10. The phenol resin foam according to claim 2 , wherein the halogenated hydroolefin is 1,3,3,3-tetrafluoropropene.
11. The phenol resin foam according to claim 10 , wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms and the 1,3,3,3-tetrafluoropropene is from −15° C. to 45° C.
12. The phenol resin foam according to claim 10 , wherein the hydrocarbon having 6 or less carbon atoms comprises pentane and/or pentene.
13. The phenol resin foam according to claim 12 , wherein the hydrocarbon having 6 or less carbon atoms comprises 40 to 100 mol % in total of pentane and/or pentene and 0 to 60 mol % of one or two or more selected from hydrocarbons having a boiling point of −50° C. to 5° C., based on a total amount of the hydrocarbon, and
wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms is 10° C. or more and 50° C. or less.
14. The phenol resin foam according to claim 13 , wherein the hydrocarbon having a boiling point of −50° C. to 5° C. comprises isobutane.
15. The phenol resin foam according to claim 2 , wherein the halogenated hydroolefin is 1,1,1,4,4,4-hexafluoro-2-butene.
16. The phenol resin foam according to claim 15 , wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms and 1,1,1,4,4,4-hexafluoro-2-butene is from 0° C. to 48° C.
17. The phenol resin foam according to claim 15 , wherein the hydrocarbon having 6 or less carbon atoms comprises pentane and/or pentene.
18. The phenol resin foam according to claim 17 , wherein the hydrocarbon having 6 or less carbon atoms comprises 5 to 100 mol % in total of pentane and/or pentene and 0 to 95 mol % of one or two or more selected from hydrocarbons having a boiling point of −50° C. to 5° C., based on a total amount of the hydrocarbon, and
wherein the average boiling point of the hydrocarbon having 6 or less carbon atoms is −10° C. or more and 50° C. or less.
19. The phenol resin foam according to claim 18 , wherein the hydrocarbon having a boiling point of −50° C. to 5° C. comprises isobutane.
20. The phenol resin foam according to claim 1 , wherein thermal conductivities under 10° C. and 23° C. environments, respectively, are less than 0.0205 W/m·k.
21. The phenol resin foam according to claim 1 , having a closed cell ratio of 90% or more, an average cell diameter of 40 μm or more and 300 μm or less, and a void area ratio of 0.2% or less.
22. The phenol resin foam according to claim 1 , wherein the phenol resin has a urea bond.
23. The phenol resin foam according to claim 1 , wherein a thermal conductivity under a 10° C. environment after conditions of being left to stand in a 110° C. atmosphere for 14 days is less than 0.020 W/m·k.