A preparation method for a metal matrix composite wire includes the following steps: 1) preparing a metal inner core; 2) preparing a glass-resin mixture; 3) dissolving self-adhesive resin in a solvent to prepare a self-adhesive resin solution; 4) uniformly coating the glass-resin mixture on a surface of the metal inner core, then coating the self-adhesive resin solution on a surface of the glass-resin mixture, and performing drying at a temperature of 80 C. to 150 C.; and 5) repeating the step 4) until a thickness of the glass-resin mixture plus the self-adhesive resin reaches 2 to 10 m. When an inductor is prepared by using the composite wire, the inductor may have relatively good weather resistance, a relatively good dielectric voltage-withstand capability, as well as relatively good high-temperature resistance and electrical performance.

A preparation method for a metal matrix composite wire includes the following steps: 1) preparing a metal inner core; 2) preparing a glass-resin mixture; 3) dissolving self-adhesive resin in a solvent to prepare a self-adhesive resin solution; 4) uniformly coating the glass-resin mixture on a surface of the metal inner core, then coating the self-adhesive resin solution on a surface of the glass-resin mixture, and performing drying at a temperature of 80 C. to 150 C.; and 5) repeating the step 4) until a thickness of the glass-resin mixture plus the self-adhesive resin reaches 2 to 10 m. When an inductor is prepared by using the composite wire, the inductor may have relatively good weather resistance, a relatively good dielectric voltage-withstand capability, as well as relatively good high-temperature resistance and electrical performance.

An isolator includes a first fluid-carrying member and a second fluid-carrying member spaced apart from the first fluid-carrying member; and a resistive, semi-conductive or non-conductive component located between the first and the second fluid-carrying member. The component is adapted to convey fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator further comprises a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the component. The reinforcing composite comprises: first fibres extending at an angle of between 30 degrees and +30 degrees to a longitudinal axis (A-A) of the resistive, semi-conductive or non-conductive component; second fibres interwoven with the first fibres and extending around the first fluid-carrying member, the second fluid-carrying member and the component at an angle of between +60 degrees and +90 degrees and/or between 60 degrees and 90 degrees to the longitudinal axis (A-A); and a resin.

An isolator includes a first fluid-carrying member and a second fluid-carrying member spaced apart from the first fluid-carrying member; and a resistive, semi-conductive or non-conductive component located between the first and the second fluid-carrying member. The component is adapted to convey fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator further comprises a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the component. The reinforcing composite comprises: first fibres extending at an angle of between 30 degrees and +30 degrees to a longitudinal axis (A-A) of the resistive, semi-conductive or non-conductive component; second fibres interwoven with the first fibres and extending around the first fluid-carrying member, the second fluid-carrying member and the component at an angle of between +60 degrees and +90 degrees and/or between 60 degrees and 90 degrees to the longitudinal axis (A-A); and a resin.

A feedthrough assembly includes: a ferrule; an insulating structure; and a seal fixedly securing the insulating structure within the ferrule, the seal comprising a glass and single-phase particulate dispersed therein; wherein the glass includes: 25% to 40% B.sub.2O.sub.3; 0 to 25% CaO; 0 to 25% MgO; 0 to 25% SrO; 0 to 10% La.sub.2O.sub.3; 5% to 15% SiO.sub.2; and 10% to 20% Al.sub.2O.sub.3; wherein all percentages are mole percentages of the glass.

Examples of a high voltage insulator are described. The high-voltage insulator is vacuum compatible and comprises a glass substrate having a face surface and a ceramic layer with uniform thickness coated on the face surface of 5 the glass substrate. The coated surface of the insulator is able to withstand high voltage pulses and exposure to charged particles radiation for a pre-determined time period. The ceramic coated glass insulator is made of a single piece of glass and can be made to large sizes.

Examples of a high voltage insulator are described. The high-voltage insulator is vacuum compatible and comprises a glass substrate having a face surface and a ceramic layer with uniform thickness coated on the face surface of 5 the glass substrate. The coated surface of the insulator is able to withstand high voltage pulses and exposure to charged particles radiation for a pre-determined time period. The ceramic coated glass insulator is made of a single piece of glass and can be made to large sizes.

A coaxial cable (10) is provided that includes an outer barrier (12, 14, 16) that seals the coaxial cable from air and protects the cable's conductors (18, 20) form oxidation in a fire. Such an outer protective barrier may, include a fire retardant tape. A dielectric (22) separates the conductors and may comprise a ceramic (23) embedded in a dielectric material (25), or ceramic beads in a braided ceramic mesh.

A feedthrough assembly includes: a ferrule; an insulating structure; and a seal fixedly securing the insulating structure within the ferrule, the seal comprising a glass and single-phase particulate dispersed therein; wherein the glass includes: 25% to 40% B.sub.2O.sub.3; 0 to 25% CaO; 0 to 25% MgO; 0 to 25% SrO; 0 to 10% La.sub.2O.sub.3; 5% to 15% SiO.sub.2; and 10% to 20% Al.sub.2O.sub.3; wherein all percentages are mole percentages of the glass.

Embodiments are directed to a method of manufacturing the printed circuit board. The PCB is a multi-layer component, including a dielectric material and an intermediate or second layer adjacently positioned with respect to the dielectric material. The intermediate layer or second layer is comprised of a conductor and fiberglass strands, with the fiberglass strands having an associated orientation. When assembled, the fiberglass and the conductor having a matching orientation and separation distance from a source to a destination.