Inorganic-organic hybrid material, optical material using the same, and inorganic-organic composite composition
The invention relates to an inorganic-organic hybrid material which comprises an inorganic component and an organic component, has a content of the inorganic component of 20-80% by mass, and has a refractive index of 1.60 or higher, wherein, when preparing a strip specimen having a thickness of 1,000 μm, a width of 5 mm and a length of 70 mm by using the inorganic-organic hybrid material and winding the specimen by 180° on a cylindrical metal rod having a diameter of 10 mm at 25° C., the specimen does not crack.
1. An inorganic-organic hybrid material which:
comprises an inorganic component and an organic component,
has a content of the inorganic component of 20-80% by mass,
comprises a sulfur component in an amount of 1.5-10% by mass in terms of sulfur atom amount,
has a refractive index of 1.60 or higher, and
has a tensile elongation measured in accordance with JIS K 6251 of 50% or more,
wherein, when preparing a strip specimen having a thickness of 1,000 μm, a width of 5 mm and a length of 70 mm by using the inorganic-organic hybrid material and winding the specimen by 180° on a cylindrical metal rod having a diameter of 10 mm at 25° C., the specimen does not crack.
2. The inorganic-organic hybrid material according to claim 1 , which has a total light transmittance of 80% or higher when having a thickness of 0.5 mm.
3. The inorganic-organic hybrid material according to claim 1 , wherein the inorganic component is particles which comprise a metal oxide having a refractive index of 2.0 or higher.
4. The inorganic-organic hybrid material according to claim 3 , wherein the metal oxide contains at least one member selected from the group consisting of Zr, Ti, Sn, Ce, Ta, Nb, and Zn.
5. The inorganic-organic hybrid material according to claim 1 , wherein the organic component comprises at least one resin selected from the group consisting of acrylic resins, methacrylic resins, epoxy resins, and silicone resins.
6. The inorganic-organic hybrid material according to claim 1 , wherein when the inorganic-organic hybrid material having a thickness of 0.5 mm is examined with a spectrophotometer, the light which gives a transmittance of 70% has a wavelength of 400 nm or less and a difference in wavelength between the light which gives a transmittance of 70% and the light which gives a transmittance of 80% is 50 nm or less.
7. The inorganic-organic hybrid material according to claim 1 , wherein the tensile elongation is 80% or more.
8. An optical material produced from the inorganic-organic hybrid material according to claim 1 .