초록 ▼

Composites comprising porous polymeric membrane films meeting the following equation: 75 MPa<(longitudinal membrane tensile modulus+transverse membrane tensile modulus)/2, wherein at least a portion of the porosity of the membrane is imbibed with resin and methods for making the same. The composites

Composites comprising porous polymeric membrane films meeting the following equation: 75 MPa<(longitudinal membrane tensile modulus+transverse membrane tensile modulus)/2, wherein at least a portion of the porosity of the membrane is imbibed with resin and methods for making the same. The composites have unusually high resistance to fracture and catastrophic failure.

대표청구항 ▼

Composites comprising porous polymeric membrane films meeting the following equation: 75 MPa<(longitudinal membrane tensile modulus+transverse membrane tensile modulus)/2, wherein at least a portion of the porosity of the membrane is imbibed with resin and methods for making the same. The composites

Composites comprising porous polymeric membrane films meeting the following equation: 75 MPa<(longitudinal membrane tensile modulus+transverse membrane tensile modulus)/2, wherein at least a portion of the porosity of the membrane is imbibed with resin and methods for making the same. The composites have unusually high resistance to fracture and catastrophic failure. oxide in terms of SiO2and 0.05 to 1.0 wt % of magnesium oxide in terms of MgO based on the main components.14. An electronic part comprising an NiCuZn-based ferrite material, wherein the ferrite material contains, as main components, an iron oxide in an amount of 47.0 to 50.0 mol % in terms of Fe 2O3, a manganese oxide in an amount of 0.01 to 3.0 mol % in terms of Mn2O3, a copper oxide in an amount of 0.5 to 4.9 mol % in terms of CuO, zinc oxide in an amount of 1.0 to 23.0 mol % in terms of ZnO and a nickel oxide in mol % in terms of NiO as the balance, and also contains 0.02 to 1.0 wt % of cobalt oxide in terms of CoO, 0.5 to 10.0 wt % of bismuth oxide in terms of Bi2O3and 0.15 to 3.2 wt % of talc based on the main components.15. A ferrite material containing an iron oxide, a copper oxide, zinc oxide and a nickel oxide as main components, wherein the iron oxide is contained in an amount of 46.0 to 49.0 mol % in terms of Fe 2O3, the copper oxide is contained in an amount of 4.0 to 11.0 mol % in terms of CuO, zinc oxide is contained in an amount of 30.1 to 33.0 mol % in terms of ZnO and the nickel oxide is contained as the balance, and based on the main components, 0.005 to 0.03 wt % of cobalt oxide in terms of CoO, 0.1 to 0.5 wt % of bismuth oxide in terms of Bi2O3, 0.1 to 0.6 wt % of silicon oxide in terms of SiO2and 0.05 to 1.0 wt % of magnesium oxide in terms of MgO are contained as additional components.16. A ferrite material containing an iron oxide, a copper oxide, zinc oxide and a nickel