Polyol composition and polyurethane foam
Provided are a polyol composition in which hard caking does not occur when stored for a long period of time, and a polyurethane foam using the same. The polyol composition comprises a polyol compound, a foaming agent, a filler, and a metal oxide fine particle, the foaming agent including a hydrofluoroolefin, and the metal oxide fine particle having a count number ratio of OH ions of a metal constituting the metal oxide fine particle with respect to a total count number of all ions measured using time-of-flight secondary ion mass spectrometry of 0.1 or less.
1. A polyol composition comprising a polyol compound, a foaming agent, a filler, and a metal oxide fine particle, wherein:
the foaming agent comprises a hydrofluoroolefin,
the metal oxide fine particle has a count number ratio of OH ions of a metal constituting the metal oxide fine particle with respect to a total count number of all ions measured using time-of-flight secondary ion mass spectrometry of 0.1 or less, and
the metal oxide fine particle comprises a hydrophobic group on a surface.
2. The polyol composition according to claim 1 , further comprising at least one selected from the group consisting of a catalyst and a foam stabilizing agent.
3. The polyol composition according to claim 1 , wherein the filler comprises a powder flame retardant.
4. The polyol composition according to claim 1 , wherein the filler comprises an inorganic filler.
5. The polyol composition according to claim 1 , wherein the filler comprises a pigment.
6. The polyol composition according to claim 1 , wherein a metal portion of the metal oxide fine particle is at least one selected from the group consisting of aluminum, titanium, zirconium, and silicon.
7. The polyol composition according to claim 1 , wherein the metal portion of the metal oxide fine particle is silicon.
8. A polyurethane foam, which is a reaction product of the polyol composition according to claim 1 and a polyisocyanate.
9. The polyol composition according to claim 1 , wherein the hydrophobic group is at least one selected from the group consisting of an alkylsilane and an amino group.
10. The polyol composition according to claim 9 , wherein the alkylsilane is selected from the group consisting of dimethylsilyl, trimethylsilyl, dimethylpolysiloxane, aminoalkylsilyl, methacrylsilyl, and octylsilyl.
11. The polyol composition according to claim 1 , wherein the hydrofluoroolefin is at least one selected from the group consisting of a trifluoropropene, a tetrafluoropropene, a pentafluoropropene, a chlorotrifluoropropene, a chlorodifluoropropene, a chlorotrifluoropropene, and a chlorotetrafluoropropene.
12. The polyol composition according to claim 1 , wherein the hydrofluoroolefin is at least one selected from the group consisting of 1,3,3,3-tetrafluoropropene (HFO-1234ze), 1,1,3,3-tetrafluoropropene, 1,2,3,3,3-pentafluoropropene (HFO-1225ye), 1,1,1-trifluoropropene, 1,1,1,3,3-pentafluoropropene (HFO-1225zc), 1,1,1,3,3,3-hexafluorobut-2-ene, 1,1,2,3,3-pentafluoropropene (HFO-1225yc), 1,1,1,2,3-pentafluoropropene (HFO-1225yez), 1-chloro-3,3,3-trifluoropropene (HFO-1233zd), and 1,1,1,4,4,4-hexafluorobut-2-ene.
13. The polyol composition according to claim 1 , wherein the hydrofluoroolefin is a hydrochlorofluoroolefin.
14. The polyol composition according to claim 13 , wherein the hydrochlorofluoroolefin is trans-1-chloro-3,3,3-trifluoropropene.