Film for glass lamination, composition for film for glass lamination, and laminated glass comprising same
A film for laminating glass including: a first surface layer; a second surface layer disposed opposite to the first surface layer; and at least one sound insulating layer disposed between the first surface layer and the second surface layer, wherein the film for laminating glass has a L/F value reduction rate [G_L/F(A,B)] of 0.07/° C. or less at a temperature range of 20 to 35° C.
1. A film for laminating glass, comprising:
a first surface layer;
a second surface layer disposed opposite to the first surface layer; and
at least one sound insulating layer disposed between the first surface layer and the second surface layer,
wherein the film for laminating glass has a L/F value reduction rate [G_L/F(A,B)] of 0.07/° C. or less at a temperature range of 20 to 35° C., and
wherein the L/F value reduction rate is calculated according to Equation (1) below:
G_L
/
F
(
A
,
B
)
=
L
/
F
(
A
)
-
L
/
F
(
B
)
L
/
F
(
A
)
×
1
B
-
A
Equation
(
1
)
where the L/F(A) and the L/F(B) are loss factor L/F values of a laminated glass comprising the film for laminating glass at A (° C.) and B (° C.), respectively,
where A is a minimum temperature (° C.) within the temperature range, and B is a maximum temperature (° C.) within the temperature range,
wherein the at least one sound insulating layer comprises a trioxane-based compound,
wherein the trioxane-based compound is one or more of a trioxane-based compound having 1,3,5-trioxane skeleton, a trioxane-based compound having 1,2,4-trioxane skeleton, or a trioxane-based compound having 1,2,3-trioxane skeleton, and
wherein the trioxane-based compound having 1,3,5-trioxane skeleton has a structure of Formula 1 below;
where, R 1 , R 2 and R 3 are independently hydrogen or alkyl group having 3 to 5 carbon atoms, respectively, with the proviso that at least one of R 1 , R 2 and R 3 is not hydrogen.
2. The film for laminating glass of claim 1 , wherein the L/F value reduction rate [G_L/F(A,B)], where A is 20° C. and B is 35° C., is 0.040/° C. or less.
3. The film for laminating glass of claim 1 , wherein the L/F value reduction rate [G_L/F(A,B)], where A is 25° C. and B is 30° C., is 0.06/° C. or less.
4. The film for laminating glass of claim 1 , wherein the L/F value reduction rate [G_L/F(A,B)], where A is 30° C. and B is 35° C., is 0.06/° C. or less.
5. The film for laminating glass of claim 1 , wherein the film for laminating glass has a difference of 0.23 or less between the L/F(A) and the L/F(B).
6. The film for laminating glass of claim 1 , wherein the film for laminating glass has a loss factor L/F value at 30° C. of 0.18 or more.
7. The film for laminating glass of claim 1 , wherein the sound insulating layer is a monolayer.
8. The film for laminating glass of claim 1 , wherein the at least one sound insulating layer comprises a plasticizer in an amount of 29 to 42 wt % based on a total weight of the at least one sound insulating layer.
9. The film for laminating glass of claim 1 , wherein the trioxane-based compound having 1,3,5-trioxane skeleton is trialkyl trioxane selected from the group consisting of 2,4,6-tri(n-propyl)-1,3,5-trioxane, 2,4,6-tri(iso-propyl)-1,3,5-trioxane, 2,4,6-tri(n-butyl)-1,3,5-trioxane, 2,4,6-tri(sec-butyl)-1,3,5-trioxane, 2,4,6-tri(isobutyl)-1,3,5-trioxane, 2,4,6-tri(tert-butyl)-1,3,5-trioxane, 2,4,6-tripentyl-1,3,5-trioxane, and combinations thereof.
10. The film for laminating glass of claim 9 , wherein the trioxane-based compound having 1,3,5-trioxane skeleton is tripropyl trioxane selected from the group consisting of 2,4,6-tri(n-propyl)-1,3,5-trioxane, 2,4,6-tri(iso-propyl)-1,3,5-trioxane, and combinations thereof.
11. The film for laminating glass of claim 1 , wherein the trioxane-based compound is comprised in an amount of 0.001 to 10 wt % based on a total weight of the at least one sound insulating layer.
12. The film for laminating glass of claim 1 , wherein the film for laminating glass has a loss factor L/F value at 20° C. of 0.32 or more.
13. The film for laminating glass of claim 1 , wherein the at least one sound insulating layer has a thickness of 10 to 20% based on a total thickness of the film for laminating glass.
14. A laminated glass comprising a film for laminating glass disposed between two light transmitting panels, wherein the film for laminating glass comprises:
a first surface layer;
a second surface layer disposed opposite to the first surface layer; and
at least one sound insulating layer disposed between the first surface layer and the second surface layer,
wherein the film for laminating glass has a L/F value reduction rate [G_L/F(A,B)] of 0.07/° C. or less at a temperature range of 20 to 35° C., and
wherein the L/F value reduction rate is calculated according to Equation (1) below:
G_L
/
F
(
A
,
B
)
=
L
/
F
(
A
)
-
L
/
F
(
B
)
L
/
F
(
A
)
×
1
B
-
A
Equation
(
1
)
where the L/F(A) and the L/F(B) are loss factor L/F values of a laminated glass comprising the film for laminating glass at A (° C.) and B (° C.), respectively,
where A is a minimum temperature (° C.) within the temperature range, and B is a maximum temperature (° C.) within the temperature range,
wherein the at least one sound insulating layer comprises a trioxane-based compound,
wherein the trioxane-based compound is one or more of a trioxane-based compound having 1,3,5-trioxane skeleton, a trioxane-based compound having 1,2,4-trioxane skeleton, or a trioxane-based compound having 1,2,3-trioxane skeleton, and
wherein the trioxane-based compound having 1,3,5-trioxane skeleton has the structure of Formula 1 below:
where, R 1 , R 2 and R 3 are independently hydrogen or alkyl group having 3 to 5 carbon atoms, respectively, with the proviso that at least one of R 1 , R 2 and R 3 is not hydrogen.
15. A vehicle comprising a laminated glass comprising a film for laminating glass disposed between two light transmitting panels, wherein the film for laminating glass comprises:
a first surface layer;
a second surface layer disposed opposite to the first surface layer; and
at least one sound insulating layer disposed between the first surface layer and the second surface layer,
wherein the film for laminating glass has a L/F value reduction rate [G_L/F(A,B)] of 0.07/° C. or less at a temperature range of 20 to 35° C., and
wherein the L/F value reduction rate is calculated according to Equation (1) below:
G_L
/
F
(
A
,
B
)
=
L
/
F
(
A
)
-
L
/
F
(
B
)
L
/
F
(
A
)
×
1
B
-
A
Equation
(
1
)
where the L/F(A) and the L/F(B) are loss factor L/F values of a laminated glass comprising the film for laminating glass at A (° C.) and B (° C.), respectively,
where A is a minimum temperature (° C.) within the temperature range, and B is a maximum temperature (° C.) within the temperature range,
wherein the at least one sound insulating layer comprises a trioxane-based compound,
wherein the trioxane-based compound is one or more of a trioxane-based compound having 1,3,5-trioxane skeleton, a trioxane-based compound having 1,2,4-trioxane skeleton, or a trioxane-based compound having 1,2,3-trioxane skeleton, and
wherein the trioxane-based compound having 1,3,5-trioxane skeleton has the structure of Formula 1 below:
where, R 1 , R 2 and R 3 are independently hydrogen or alkyl group having 3 to 5 carbon atoms, respectively, with the proviso that at least one of R 1 , R 2 and R 3 is not hydrogen.