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|1. (WO2016053465) ACOUSTIC EMISSION REDUCTION OF COMPOSITES CONTAINING SEMI-AROMATIC POLYAMIDES|
|Applicants:||E. I. DU PONT DE NEMOURS AND COMPANY
|Inventors:||WAKEMAN, Martyn Douglas
SAUER, Bryan Benedict
|Title:||ACOUSTIC EMISSION REDUCTION OF COMPOSITES CONTAINING SEMI-AROMATIC POLYAMIDES|
The present invention relates to a composite structure having a surface, which surface has at least a portion made of a surface resin composition, and comprising a woven glass fiber fabric, said woven glass fiber fabric being fully impregnated with a matrix resin composition, wherein a. the matrix resin composition comprises a blend of PA6T/DT and PA66/6T, preferably with a weight ratio between from about 30:70 to about 70:30, more preferably with a weight ratio of about 50:50 b. the surface resin composition is independently selected from an amorphous polyamide composition comprising PA6I/6T or a polyamide composition comprising a blend of PA66 and PA6, preferably the weight ratio of PA66 and PA6 in the blend of the surface resin composition is of between 100:0 to 50:50, more preferably 75:25 and wherein c. the woven glass fiber fabric has a basis weight of between 280 to 320 g/m2 d. the coverage of the woven glass fiber fabric is of between 95% to 100%.