31results about How to "Improve microwave permeability" patented technology

Disclosed is high elasticity wave-absorbing anticorrosion nanometer coating with the weight ratio composition of 1-5% nanometer titanium alloy, 1-10% carbon fiber, 1-10% copper powder, 13-25% T-ZnO, 15-30% magneto plumbite type ferrite and 25-68% epoxy modified acrylic acid elastic resin; the radius of nanometer titanium alloy is 20- 50nm; the radius of carbon fiber is 20-30nm and the length of carbon fiber is 100-500nm; the radius of the particle of copper powder is 20-30nm; the radius of the particle of T-ZnO is 40-70nm; the radius of magneto plumbite type ferrite is 20-100nm and the length is 100-300nm; the Rho of epoxy modified acrylic acid elastic resin is equal to 1.1-1.2. The high elasticity wave-absorbing anticorrosion nanometer coating has super strong anticorrosion property and avoids the device from corrosion when the device operates under badly corrosive environment for long time; the anticorrosion nanometer coating is bonded firmly with the substrate and has the advantages of high elasticity and good wave-absorbing performance.

The invention discloses a preparation method of a nanometer chain-like core-shell type nickel/polyaniline composite wave absorption material. The preparation method comprises the following steps of utilizing the reducibility of hydrazine hydrate, reducing nickel salt with liquid phase under normal pressure, and preparing a nickel nanometer chain which is formed by self assembling spherical particles in uniform size; then coating the surface of the nanometer chain with polyaniline by using an in-situ polymerization method, and acquiring the nanometer chain-like core-shell type nickel/polyaniline composite wave absorption material, wherein the nanometer chain-like core-shell type nickel/polyaniline composite wave absorption material is of a core-shell structure and takes a magnetic metal nickel nanometer chain as a core and the polyaniline as a conductive polymer as a shell layer. According to the preparation method provided by the invention, the nanometer chain which is formed by self assembling the nickel nanospheres is utilized as a magnetic core, the magnetic anisotropy is strengthened through the geometric effect, and the microwave permeability of a core-shell structure whole body is further improved in the premise of ensuring dielectric loss, so that impedance matching of the wave absorption material is improved, surface reflection of electromagnetic waves is lowered, and the wave absorption performance of the material is improved.

The invention relates to an energy-saving window frame or window sash profile of a polyurethane composite material consisting of polyurethane resin and glass fibers and a forming method. The profile comprises the glass fibers; a plurality of bundles of glass fibers are densely distributed to form a window frame or window sash profile forming skeleton; and the polyurethane is compounded on the inner and outer surfaces of the window frame or window sash profile forming skeleton to form the polyurethane window frame or window sash profile. The profile has the advantages that: the profile has light weight, high strength, energy conservation, heat insulation, health, environmental friendliness, remarkable energy-saving effect, corrosion and ageing resistance, long service life, good dimensional stability, good weather resistance, good high temperature resistance, better low temperature resistance, good insulating performance, good shock absorption performance and rich colors; the polyurethane composite material has high hardness and can be used for coating various paints to prepare the profiles of various colors to adapt the application of different styles and grades; and the profile has fatigue resistance, and the polyurethane composite material has high fatigue resistance so as to ensure use safety and reliability of the material.

The invention relates to a reinforcing rib section for a polyurethane composite material energy-saving door frame or door sash frame or window frame or window sash frame, which is made from polyurethane resin and glass fiber, and a molding method. The reinforcing rib section comprises glass fibers, wherein a reinforcing rib section molding framework for a door frame/sash or a window frame/sash consists of a plurality of bundles of densely covered glass fibers; and polyurethane resin is compounded with the inner and outer surfaces of the reinforcing rib section molding framework for the door frame/sash or the window frame/sash. The reinforcing rib section has the advantages of light weight, high intensity, energy conservation, heat preservation, heat insulation, health, environmental friendliness, remarkable energy-saving effect, corrosion resistance, ageing resistance, long service life, high size stability, high weather resistance, high high-temperature resistance, higher low-temperature resistance, good insulating property, high damping performance and rich color; a polyurethane composite material has high hardness; and the reinforcing rib section can be painted with various paints to obtain sections of various colors so as to adapt to different styles and grades.

The invention relates to a composite energy-saving door frame or door leaf frame and a forming method thereof. The composite energy-saving door frame or door leaf frame has high strength, low specific gravity, insulativity, microwave permeability, corrosion resistance, good heat insulation effect and high decoration property. The composite energy-saving door frame or door leaf frame comprises a door frame or a door leaf frame, wherein the door frame or the door leaf frame consists of two component materials; one side of the door frame or the door leaf frame is a glass steel section and the other side of the door frame or the door leaf frame is a wood section; and the glass steel section is in fit with the wood section to form the composite energy-saving door frame or door leaf frame. The composite energy-saving door frame or door leaf frame has the advantages of: 1, light weight and high strength; 2, energy conservation, heat preservation and heat insulation; 3, health, environmental friendliness and good energy-saving effect; 4, corrosion resistance, ageing resistance and long service life; 5, high dimensional stability; 6, high weather resistance, high high-temperature resistance and high low-temperature resistance; 7, high insulating property; 8, high damping performance; and 9, abundant colors and high hardness in a polyurethane composite material, so that sections with various colors can be manufactured by coating various paint and are suitable for different styles and grades.

The invention discloses an electronic paramagnetic imager. The electronic paramagnetic imager comprises a sample container, a quick-scanning resonator, a pair of quick-scanning coils, a pair of main magnets, a pair of gradient magnets, a main magnet driver, a gradient magnet driver, a quick-scanning coil driver, a microwave source, a power amplifier, a signal amplifier, a quick digitalizerand a computer. A signal is directly recorded by the quick digitalizer, and the electronic paramagnetic imager has the advantages that the ratio of signal to noise is extremely high, the data collecting timeis short, and big-power input is achieved, and the frequency can be adjusted. Theelectronic paramagnetic imager reconstructs a two-dimensional image of a tumor according to space distribution of a sample signal. The work frequency of the imager is low frequency about 250 MHz, the electronic paramagnetic imager can measure a tumor model of a mouse and the human body, the microwave permeability is better, the measuring range is larger relatively, and an operation does not need to be performed.

The invention relates to an anticorrosion structure of a hatching machine, which comprises a rectangular horizontal bottom frame, a plurality of horizontal longitudinal guide rails, four vertical columns, and longitudinal connecting beams. The horizontal longitudinal guide rails are arranged on each side of the bottom frame in the length direction, the four vertical columns arranged in a rectangular form are disposed in the middle of the bottom frame in the length direction, each longitudinal connecting beam is disposed between the middles of the corresponding two vertical columns arranged longitudinally, and all of the bottom frame, the guide rails, the vertical columns and the connecting beams are made of glass fiber reinforced plastics. By adopting the technical scheme that all of the bottom frame, the guide rails, the vertical columns and the connecting beams are made of the glass fiber reinforced plastics, the support structure is insulating and thermal-insulating. The hatching machine with the support structure is not easy to rust and is anticorrosion, and normal service of the hatching machine is more facilitated.