Structure, production method of structure, and millimeter wave radar module
AssigneeMitsubishi Chemical Corporation
InventorsShuta ISEKI, Hidekazu SHOJI
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Abstract
A structure contains a first member formed from a thermoplastic resin composition A and a second member formed from a thermoplastic resin composition B, the first member and the second member being joined at least partially, wherein the thermoplastic resin composition A molded into a molding with a thickness of 2 mm has a transmittance of 70.0% or more at a frequency of 76.5 GHz; the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has a transmittance of less than 50.0% at a frequency of 76.5 GHz; and the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has an absorbance of 40.0% or more at a frequency of 76.5 GHz:
Claims15
A structure comprising a first member formed from a thermoplastic resin composition A and a second member formed from a thermoplastic resin composition B,
- the first member and the second member being joined at least partially,
- wherein the thermoplastic resin composition A molded into a molding with a thickness of 2 mm has a transmittance of 70.0% or more determined according to Formula (C) at a frequency of 76.5 GHz;
- the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has a transmittance of less than 50.0% determined according to Formula (C) at a frequency of 76.5 GHz;
- and
- the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has an absorptance of 40.0% or more determined according to Formula (A) at a frequency of 76.5 GHz:
- Transmittance
-
- (
- %
- )
- =
- 1
- 1
-
- 0
- -
- T
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- Formula
-
- (
- C
- )
- wherein T represents the transmission loss measured by a free space method.
- Absorptance
-
- (
- %
- )
- =
- 100
- -
- (
- 1
- 1
-
- 0
- -
- R
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- +
- 1
- 1
-
- 0
- -
- T
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- )
- Formula
-
- (
- A
- )
- wherein R represents the reflection loss measured by a free space method, and T represents the transmission loss measured by a free space method.
A production method of a structure comprising joining a first member formed from thermoplastic resin composition A and a second member formed from thermoplastic resin composition B at least partially,
- wherein the thermoplastic resin composition A molded into a molding with a thickness of 2 mm has a transmittance of 70.0% or more determined according to Formula (C) at a frequency of 76.5 GHz;
- the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has a transmittance of less than 50.0% determined according to Formula (C) at a frequency of 76.5 GHz;
- and
- the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has an absorptance of 40.0% or more determined according to Formula (A) at a frequency of 76.5 GHz:
- Transmittance
-
- (
- %
- )
- =
- 1
- 1
-
- 0
- -
- T
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- Formula
-
- (
- C
- )
- wherein T represents the transmission loss measured by a free space method.
- Absorptance
-
- (
- %
- )
- =
- 100
- -
- (
- 1
- 1
-
- 0
- -
- R
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- +
- 1
- 1
-
- 0
- -
- T
- /
- 1
-
- 0
- ×
- 1
-
- 0
-
- 0
- )
- Formula
-
- (
- A
- )
- wherein R represents the reflection loss measured by a free space method, and T represents the transmission loss measured by a free space method.
Dependencies are inferred from the claim text.