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 composite composition comprising:
radiation-curable monomers;
inorganic particles having a crystallite diameter, as calculated from the half-value width of a crystalline peak determined by X-ray diffractometry, of 1-10 nm; and
an organic compound comprising a thiol group,
wherein the radiation-curable monomers comprise a monofunctional radiation-curable monomer and a multifunctional radiation-curable monomer, and the content of the organic compound comprising a thiol group is 1.5-10% by mass of the inorganic-organic composite composition, in terms of sulfur atom amount.
2. The inorganic-organic composite composition according to claim 1 , wherein the content of the inorganic particles is 20-80% by mass based on the solid components of the composition.
3. The inorganic-organic composite composition according to claim 1 , wherein the proportion of the monofunctional radiation-curable monomer in the radiation-curable monomers is 1-95% by mass.
4. The inorganic-organic composite composition according to claim 1 , wherein the radiation-curable monomers include at least one monomer selected from the group consisting of an acrylic monomer, a methacrylic monomer, an epoxy monomer, and a silicone monomer.
5. The inorganic-organic composite composition according to claim 1 , wherein the content of the organic compound comprising a thiol group is 2.0-9% by mass of the inorganic-organic composite composition, in terms of sulfur atom amount.
6. The inorganic-organic composite composition according to claim 1 , wherein the content of the organic compound comprising a thiol group is 3.5-8% by mass of the inorganic-organic composite composition, in terms of sulfur atom amount.
7. The inorganic-organic composite composition according to claim 1 , wherein the organic compound comprises more than one thiol group.
8. The inorganic-organic composite composition according to claim 1 , wherein the proportion of the monofunctional radiation-curable monomer in the radiation-curable monomers is 10-90% by mass.
9. The inorganic-organic composite composition according to claim 1 , wherein the proportion of the monofunctional radiation-curable monomer in the radiation-curable monomers is 30-80% by mass.
10. An inorganic-organic hybrid material obtained by curing the inorganic-organic composite composition according to claim 1 .
11. The inorganic-organic hybrid material according to claim 10 , which has a refractive index of 1.60 or higher, in which 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.
12. An optical material which comprises the inorganic-organic hybrid material according to claim 10 .
13. A lightguide sheet which comprises the inorganic-organic hybrid material according to claim 10 .
14. An optical waveguide sheet which comprises the inorganic-organic hybrid material according to claim 10 .