Decorative sheet, and transparent resin sheet
To provide a decorative sheet including a transparent resin layer having high transparency and excellent surface scratch resistance from the viewpoint of the design properties and a transparent resin sheet. A decorative sheet ( 1 ) according to one aspect of the present invention has a transparent resin layer ( 4 ) containing a crystalline polypropylene resin as the main component, in which a value of a peak area ratio x represented by the following expression (1) of the transparent resin layer ( 4 ) is x≥0.4. Herein, S040, S130, and Sam in the following expression (1) are peak areas determined from an X-ray diffraction spectrum obtained by measuring the transparent resin layer with an X-ray diffractometer, S040 is the peak area from the Miller index (040) of polypropylene α crystals, S130 is the peak area from the Miller index (130) of the polypropylene α crystals, and Sam is the peak area of an amorphous material. Peak area ratio x = ( S 040 + S 130 ) ( Sam ) ( 1 )
1. A decorative sheet comprising:
a transparent resin layer containing a crystalline polypropylene resin as a main component,
a nano-sized nucleating agent contained in the transparent resin layer,
the nano-sized nucleating agent is contained in the transparent resin layer in a state where the nucleating agent is encapsulated in a vesicle having a monolayer outer membrane,
wherein
a value of a peak area ratio x represented by a following expression (1) of the transparent resin layer is x≥0.4,
S040, S130 and Sam in the following expression (1) are peak areas calculated from an X-ray diffraction spectrum obtained by measuring the transparent resin layer by an X-ray diffractometer using Cu for an X-ray source, S040 represents a peak area from a Miller index (040) of polypropylene α crystals, S130 represents a peak area from a Miller index (130) of the polypropylene α crystals, and Sam represents a peak area of an amorphous material,
[
Expression
1
]
Peak
area
ratio
x
=
(
S
040
+
S
130
)
(
Sam
)
,
(
1
)
and
a concealing layer containing aluminum of a flake disposed on a side of the transparent resin layer.
2. The decorative sheet according to claim 1 , wherein the peak area ratio x is 0.4≤x≤1.0.
3. A decorative sheet comprising:
a transparent resin layer containing a crystalline polypropylene resin as a main component,
a nano-sized nucleating agent contained in the transparent resin layer,
the nano-sized nucleating agent is contained in the transparent resin layer in a state where the nucleating agent is encapsulated in a vesicle having a monolayer outer membrane,
wherein
a value of a peak intensity ratio y represented by a following expression (2) of the transparent resin layer is y≥0.65,
I997, I938, and I973 in the following expression (2) are peak intensity values calculated from an absorption spectrum obtained by Fourier infrared spectrometry of the transparent resin layer, I997 represents a peak intensity value at a wavenumber of 997 cm −1 , I938 represents a peak intensity value at a wavenumber of 938 cm −1 , and I973 represents a peak intensity value at a wavenumber of 973 cm −1 ,
[
Expression
2
]
Peak
intensity
ratio
y
=
I
997
-
I
938
I
973
-
I
938
,
(
2
)
and
a concealing layer containing aluminum of a flake disposed on a side of the transparent resin layer.
4. The decorative sheet according to claim 3 , wherein the peak intensity ratio y is 0.65≤y≤0.85.