Polyester fabrics for airbag and preparation method thereof

摘要

Disclosed is a fabric for an airbag including a polyester fiber, and particularly to a polyester fabric for an airbag of which toughness is 3.5 to 6.0 kJ/m3 and tearing strength measured according to the ASTM D 2261 TONGUE method is 18 to 30 kgf, wherein the fabric includes polyester fiber of which toughness is 70 to 95 J/m3, a method of preparing the same, and an airbag for a car including the same.

主权项

1. A polyester fabric for an airbag, having toughness of 3.5 to 6.0 kJ/m3 defined by Calculation Formula 1, and tearing strength measured according to ASTM D 2261 TONGUE method of 18 to 30 kgf, wherein the fabric includes a polyester fiber having toughness defined by Calculation Formula 1 of 70 to 95 J/m2:Toughness⁡(Work⁢⁢of⁢⁢rupture)=∫0break⁢F·ⅆlCalculation⁢⁢Formula⁢⁢1 wherein F represents the load that is provided to the polyester fiber or fabric until the length of the fiber or the fabric is elongated as much as dl, and dl represents the elongated length of the polyester fiber or fabric; and wherein the polyester fiber has Young's modulus of 60 to 100 g/de at 1% of elongation and 20 to 60 g/de at 2% of elongation, which is measured according to the ASTM D 885 method.