| 摘要 |
LAMINATE OF METAL SHEETS AND CONTINUOUS GLASS FILAMENTS-REINFORCED SYNTHETIC MATERIAL Laminate displaying improved blunt notch behaviour, so that it is suitable for use as a constructional material in aviation and cosmonautics. It comprises an intermediate layer of synthetic material reinforced by continuous glass filaments having a modulus of elasticity of at least 80 GPa. The glass filaments contain at least 58-69% b.w. of SIO2, 18-29% b.w. of AL2O3 and MGO. Preferably, they have a tenacity of at least 4 GPa, and an elongation at break of at least 4%. The synthetic material may be an amorphous thermoplastic resin having a Tg > 140.degree.C such as, e.g., polarylates, poly(ether)sulfones, polyetherimides or poly-p-phenylene ethers, or a semi- or para- crystalline resin having a crystalline melting point > 170.degree.C, such as poly-phenylene sulfides, polyetherketones or liquid crystal polymers. |
