[Problem to be solved] A polyamide resin composition having superior liquidity, mechanical strength, and creep characteristics is provided.[Solution] A polyamide resin composition contains (A) a polyamide resin and (B) an inorganic filler. The (A) polyamide resin contains 90 mass % or more of polyamide 66 relative to 100 mass % of the polyamide resin. The content of the (B) inorganic filler is 30 mass % or more relative to 100 mass % of the polyamide resin composition. The polyamide resin composition has a solidifying point of 210°C or more. The polyamide resin composition has a spiral flow value which is 60 cm or more when the content of the (B) inorganic filler is 30 mass % or more and less than 40 mass %, 40 cm or more when the content is 40 mass % or more and 50 mass % or less, and 20 cm or more when the content is greater than 50 mass % and 70 mass % or less. The polyamide resin composition has a strain of 3.8% or less in a 1000-hour tensile creep test under 120°C and 60 MPa. The polyamide resin composition has a formic acid relative viscosity (VR) which is in the range of 30 < VR < 40.
POLYAMIDE RESIN COMPOSITION
POLYAMIDHARZZUSAMMENSETZUNG
COMPOSITION DE RÉSINE DE POLYAMIDE
2020-03-25
Patent
Elektronische Ressource
Englisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / A47C Stühle , CHAIRS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F16F SPRINGS , Federn / F16H Getriebe , GEARING |