Dimming laminate and multiple glass
A dimming laminate ( 10 ) includes: a dimming substrate ( 18 ) in which a dimming function material ( 16 ) is provided between two first transparent substrates ( 12 ) and ( 14 ); and a second transparent substrate ( 22 ) that is bonded to one first transparent substrate ( 12 ) through an adhesive layer ( 20 ). Each of the first transparent substrates ( 12 ) and ( 14 ) has a different average thermal expansion coefficient at 50-350° C. from that of the second transparent substrate ( 22 ). In the dimming laminate ( 10 ), a third transparent substrate ( 26 ) is bonded to the other first transparent substrate ( 14 ) through an adhesive layer ( 24 ), and an average thermal expansion coefficient at 50-350° C. is equal between the third transparent substrate ( 26 ) and the second transparent substrate ( 22 ).
1. A dimming laminate comprising: a single dimming substrate in which a dimming function material is provided between two first transparent substrates; and a second transparent substrate that is bonded to one first transparent substrate of the two first transparent substrates through an adhesive layer, the first transparent substrates having a different average thermal expansion coefficient at 50-350° C. from that of the second transparent substrate,
wherein a third transparent substrate is bonded to the other first transparent substrate of the two first transparent substrates through an adhesive layer, and a difference in average thermal expansion coefficient at 50-350° C. between the third transparent substrate and the second transparent substrate is not higher than 20×10 −7 ° C.;
wherein the dimming function material is a material whose optical property can be changed reversibly, and which is an electrochromic function material, an SPD (Suspended Particle Device) material, a liquid crystal material, a polymer dispersed liquid crystal material, a photochromic material, or a thermochromic material;
wherein an alkali metal oxide content of each of the first transparent substrates is not higher than 0.1% in terms of mol % of oxides;
wherein each of the first transparent substrates has an average thermal expansion coefficient at 50-350° C. of not higher than 45×10 −7 ° C.;
wherein the second transparent substrates has an average thermal expansion coefficient at 50-350° C. of 60×10 −7 ° C. to 100×10 − ′/° C.; and
wherein the third transparent substrates has an average thermal expansion coefficient at 50-350° C. of 60×10 −7 ° C. to 100×10 −7 ° C.
2. The dimming laminate according to claim 1 , wherein the average thermal expansion coefficient at 50-350° C. is equal between the third transparent substrate and the second transparent substrate.
3. The dimming laminate according to claim 2 , wherein the average thermal expansion coefficient at 50-350° C. in each of the third transparent substrate and the second transparent substrate is higher than the average thermal expansion coefficient at 50-350° C. in each of the first transparent substrates.
4. The dimming laminate according to claim 1 , wherein a difference in average thermal expansion coefficient at 50-350° C. between the two first transparent substrates is not higher than 10×10 −7 /° C.
5. The dimming laminate according to claim 1 , wherein the average thermal expansion coefficient at 50-350° C. is equal between the two first transparent substrates.
6. A multiple glass in which the dimming laminate of claim 1 and a glass plate are put separately from each other through a spacer, and circumferential edge portions of the dimming laminate of claim 1 and the glass plate are sealed with a seal material.
7. The dimming laminate according to claim 1 , wherein each of the first transparent substrates has a thickness of 0.1-2.0 mm.
8. The dimming laminate according to claim 1 , wherein each of the second transparent substrate and the third transparent substrate has a thickness of 1.0-12.0 mm.
9. The dimming laminate according to claim 8 , wherein each of the second transparent substrate and the third transparent substrate has a thickness of 2.0 mm or more.
10. The dimming laminate according to claim 8 , wherein each of the second transparent substrate and the third transparent substrate has a thickness of 1.0 mm or more.
11. The dimming laminate according to claim 1 , wherein each of the second transparent substrate and the third transparent substrate is a soda lime glass.
12. The dimming laminate according to claim 1 , wherein each of the adhesive layers is sheet-like member and has a thickness of 0.1-2.0 mm.
13. The dimming laminate according to claim 1 , wherein a difference in thickness between the two first transparent substrates is 1 mm or less, and a difference in thickness between the second transparent substrate and the third transparent substrate is 1 mm or less.
14. The dimming laminate according to claim 1 , wherein each of the first transparent substrates has an average thermal expansion coefficient at 50-350° C. of not higher than 40×10 −7 /° C.