Thermoplastic resin composition for refrigerant transportation hose and refrigerant transportation hose
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsKenta Wakabayashi, Shusaku Tomoi, Shun Sato
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Abstract
A thermoplastic resin composition for a refrigerant-transporting hose includes a thermoplastic resin and an elastomer. A 10% modulus M10 (MPa) at 25° C., a water vapor permeability coefficient PCH2O (g·mm/(m2·24 h) at a temperature of 60° C. and a relative humidity of 100%, a strength at break TB 150 (MPa) in a tensile test at 150° C., and an elongation at break EB150 (%) in a tensile test at 150° C. satisfy Expressions (1), (2), and (3), namely 0.9≤M10×PCH2O≤90 . . . (1), 1.0≤TB150≤20 . . . (2), and 50≤EB150 . . . (3).
Claims14
A thermoplastic resin composition for a refrigerant-transporting hose, the thermoplastic resin composition comprising:
- a thermoplastic resin;
- and
- an elastomer;
- a 10% modulus M10 (MPa) at 25° C., a water vapor permeability coefficient PCH2O (g·mm/(m2·24 h) at a temperature of 60° C. and a relative humidity of 100%, a strength at break TB150 (MPa) in a tensile test at 150° C., and an elongation at break EB150(%) in a tensile test at 150° C. satisfying Expressions (1), (2), and (3):
- 0.9≤M10×PCH2O≤90 (1)
- 1.0≤TB150≤20 (2)
- 50≤EB150 (3).
Dependencies are inferred from the claim text.