초록 ▼

Laminate displaying improved blunt notch behavior, so that it is suitable for use as a construction 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 fi

Laminate displaying improved blunt notch behavior, so that it is suitable for use as a construction 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% by weight of SiO2, 18-29% by weight 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°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°C., such as poly-phenylene sulfides, polyetherketones or liquid crystal polymers.

대표청구항 ▼

A laminate composed of at least two metal sheets having a synthetic layer bonded therebetween, said layer containing continuous glass filaments wherein: A) the glass filaments have a modulus of elasticity of 80-100 GPa; B) the metal sheets each have a thickness of less than 1.5 mm and contain a mate

A laminate composed of at least two metal sheets having a synthetic layer bonded therebetween, said layer containing continuous glass filaments wherein: A) the glass filaments have a modulus of elasticity of 80-100 GPa; B) the metal sheets each have a thickness of less than 1.5 mm and contain a material having a tensile strength greater than 0.20 GPa; C) the metal sheets are of a metal selected from the group consisting of: aluminum alloys; steel; titanium alloys; copper; copper alloys and magnesium alloys; and D) the glass filaments extend parallel to each other in at least one direction; constitute 35-75% by volume of the synthetic layer; and are comprised of 58-69% by weight of SiO2 and 18-29% by weight of Al2O3. A laminate according to claim 1, wherein the thickness of the synthetic layer between two successive metal sheets is of the same order of magnitude as that of each of the metal sheets.