48results about How to "Radiation resistance" patented technology

An antenna system is presented including an electrically conductive radiating mast that extends generally vertical relative to earth ground. The mast has a lower end for receiving RF energy for radiation thereby at an operating RF frequency and an upper end. A plurality of N radial, electrically conductive, wires are provided with each having an inner end and an outer end. The inner ends of the radial wires are electrically connected together and located proximate to the vertical mast. The radial wires are elevated throughout their lengths above the level of earth ground and extend radially outward from the vertical mast. A tuning device, such as an adjustable inductor, is connected to the radial wires for adjusting the impedance thereof such that the radial wires resonate at the operating frequency.

The invention relates to a reflective insulation energy-saving coating for the external surface of a building. The coating is characterized by comprising the following components in percentage by weight: 15 to 45 percent of deionized water, 0.5 to 5 percent of dispersing agent, 16 to 36 percent of rutile type titanium dioxide, 3 to 35 percent of insulation powder, 0.1 to 3.5 percent of wetting agent, 0.5 to 2 percent of auxiliary film forming anti-freezing aid, 1.5 to 7.8 percent of film forming aid, 0.1 to 1.8 percent of antifoaming agent and 0.5 to 2.5 percent of thickening agent. The reflective insulation energy-saving coating for the external surface of the building effectively resists radiation of heat energy produced by sunlight and is an energy-saving and environment-friendly product; meanwhile, the preparation process flow for the coating is simple, complex equipment is not needed, large-scale processing production is easy to implement, the preparation process is environment-friendly, the conventional insulation system can be partially or completely replaced through thermal performance design calculation, and the potential fire hazard of an external wall insulation system is eliminated.

The present invention provides a method of producing a latent polarized image having high contrast characteristics with no apparent contours or traces of the image under normal visualization. A polymer solution is prepared in an organic solvent, and then applied onto a light-reflecting substrate. The polymer layer is dried to produce an optically isotropic polymer layer and anisotropic images are formed on the polymer layer. The polymer solution's concentration is from 5 to 30% by weight, and the images are formed by application of micro-lines by thermo-mechanical means, having depths from 1 to 3 μm and being separated from one another by 4 to 6 μm at a process rate from 10 to 50 m / min. The thermomechanical means operates at a temperature that is 10 to 60% less than the polymer melting / disintegration temperature and contacts the polymer layer to form micro-lines for 0.015 to 0.650 msec.

The invention relates to the field of insulated cable fabrication, in particular to a double-insulated cable which is provided with a conductive core, wherein the conductive core is externally provided with an insulated layer which adopts a double-layer structure of an internal layer and an external layer, the internal layer is made of low-smoke and zero-halogen crosslinked polyethylene insulated material, and the external layer is made of low-smoke and zero-halogen flame-retardant crosslinked polyolefine insulated material. The cable insulated layer produced by the method can meet the requirements of a civil nuclear facility project on fire resistance, electric property, mechanical property, irradiation resistance and long service life property.

A radiation resistant single-mode optical fiber has a core and a cladding, each made of fluorine-doped silica glass, in which a chlorine concentration of the core is at least 0.01 ppm, a relative refractive index difference of the core based on the refractive index for silica is between −0.30% and −0.10%, a relative refractive index difference of the core based on the refractive index for the cladding is between 0.3% and 0.5%, a cutoff wavelength is 1.27 μm or below, and a bending loss at a wavelength of 1.3 μm and a bending diameter of 20 mm is 0.5 dB / m or less.

The invention relates to the field of insulated cable fabrication, in particular to a fabricating method of a cable insulated layer. Low-smoke and zero-halogen crosslinked polyethylene insulated material is used as the material of an internal layer, low-smoke and zero-halogen flame-retardant crosslinked polyolefine insulated material is used as the material of an external layer, and the internal layer and the external layer are together extruded out by utilizing two plastic extruding devices. The cable insulated layer produced by the method can meet the requirements of a civil nuclear facility project on fire resistance, electric property, mechanical property, irradiation resistance and long service life property.

The invention discloses a 10 kV graphene composite shielding low-noise anti-interference overhead insulated cable, comprising a highly conductive composite aluminium conductor. The highly conductive composite aluminium conductor is composed of 37 highly conductive composite aluminium wires of a diameter of 2.54 mm by four-layer intertwisting in a "1+6+12 +18" structure mode; a graphene composite semiconductive shielding layer, a crosslinked polyethylene internal insulating layer and a modified weather-proof insulation external insulating layer are extruded outside the highly conductive composite aluminium conductor in common; and an outer surface of the modified weather-proof insulation external insulating layer is provided with a nanometer micro-spiral air guide groove by thermal printingand then a graphene composite glass fibre layer is arranged through extrusion weaving or sparse winding, and a layer of fluorocarbon paint is sprayed outside the graphene composite glass fibre layer.The 10 kV graphene composite shielding low-noise anti-interference overhead insulated cable has the advantages of high electric strength, high temperature resistance, high thermal stability, high anti-interference performance, high humidity resistance, good embrittlement resistance and weather aging resistance, and thus the service life of the cable is greatly prolonged, and the safety of the cable is greatly improved.

The invention discloses a durable type ultraviolet-radiation-resistant curtain fabric. The durable type ultraviolet-radiation-resistant curtain fabric comprises a polyester base fabric, a blacking layer, a light shielding layer and an ultraviolet light absorbing layer. A production method of the durable type ultraviolet-radiation-resistant curtain fabric comprises the steps of 1, selecting a PET polyester fabric as the curtain fabric base fabric; 2, compounding backing glue; 3, uniformly applying the blacking glue to the curtain fabric base fabric in a scrape-coating manner, and conducting drying, so that the blacking layer is obtained; 4, compounding light shielding layer glue; 5, applying the light shielding layer glue to the blacking layer in a scrape-coating manner, and conducting drying, so that the light shielding layer is obtained; 6, compounding ultraviolet light absorbing glue; and 7, applying the ultraviolet light absorbing glue to the light shielding layer in a scrape-coating manner, and conducting drying, so that the ultraviolet light absorbing layer is obtained. By means of the durable type ultraviolet-radiation-resistant curtain fabric and the production method thereof, the technical problem that the optical radiation resistance efficiency and the life cycle of a curtain cannot be achieved at the same time is solved; and the obtained curtain fabric can resist to ultraviolet radiation, and in addition, the ultraviolet-resistant function of the curtain fabric can last for a long service time.

The invention provides a method for preparing a polystyrene composite material for packaging boards, comprising the following steps: (1) soaking polycrystalline iron fibers in water and then stirring and dispersing them; drying to obtain purified polycrystalline iron fibers; (2) acrylic acid and AIBN are mixed uniformly to obtain a graft liquid, and the purified polycrystalline iron fibers are cut and dissolved in thionyl chloride, and a suspension is obtained after stirring. Add the suspension into the grafting solution and place it in an ultrasonic cleaner, vibrate it ultrasonically, distill the material under reduced pressure, filter, wash, and dry to obtain a modified polycrystalline iron fiber; (3) polystyrene resin, antioxidant , Polythiophene is dissolved in toluene and mixed to obtain a mixed solution. The modified polycrystalline iron fiber is immersed in the mixed solution. After the toluene is completely volatilized, it is spread in the mold, heated and molded to obtain a polystyrene composite material for packaging boards. . The composite material prepared by the invention has good wave-absorbing ability and can effectively resist electromagnetic wave radiation.

The invention discloses nutrient-enriched natural astacin containing quail feed. The quail feed contains, by mass, 1-10% of natural astacin and 90-99% of poultry feed. Natural astacin is extracted from algae, fungi, fish, shrimps, crabs and plants. According to the quail feed, the biological and pharmaceutical characteristics of astacin are utilized, peculiar super-strong tinting strength and a nutritious health-care function are brought into play, natural astacin is adopted and is transferred and stored in quail egg yolk by aid of the effective conversion ability of quails, and therefore a nutrient-enriched and health-care functional product easy to accept by the mass is produced. Astacin in obtained quail eggs rich in natural astacin is mainly concentrated in quail egg yolk; the quail eggs can serve as common food or health-care food with a special function or main materials or auxiliary materials or the like of other food.

The invention relates to a textile fabric for healthy casual pants, which is composed of an inner layer fabric, an outer layer fabric and a metal film. The weight of each component of the inner layer fabric is: mercerized cotton 26~30 parts, hemp fiber 30~40 parts 30-44 parts of silk and 30-44 parts of real silk, the weight of each component of the outer fabric is: 26-32 parts of tencel and 14-19 parts of soybean fiber, and the metal film covers the surface of the inner fabric . The textile surface of the healthy casual pants of the present invention can be worn next to the body, and can effectively resist the radiation of external electromagnetic waves and reduce the damage of electromagnetic waves to the human body.

The invention discloses a nutrition fortified cattle feed containing natural astaxanthin. The nutrition fortified cattle feed is prepared from the following components in percentage by weight: 1-10% of natural astaxanthin and 90-99% of a compound feed, wherein the natural astaxanthin is extracted from algae, funguses, fish, shrimps, crabs, plants and the like. The biologic characteristics and the pharmacal characteristics of the astaxanthin are utilized, and specific super-strong tinting strength and nutritive health-care functions are exerted; based on the compound feed for cattle, the natural astaxanthin is added, the absorption, the conversion and the storage of the cattle are effectively utilized, the natural astaxanthin in the feed can promote microorganisms and body tissue in cattle rumens to be synthesized into various vitamins, the appetite is stimulated, reproduction and lactation are facilitated, the healthy state of a respiratory system and mucosae is maintained, and normal eyesight is maintained; and the natural astaxanthin which is not converted finally is transferred and stored into the muscle cells of the cattle, the generation of allochromatic metmyoglobin cells is avoided, and the generation of oxidation reactions in muscle cells of beef is thoroughly avoided.

The invention discloses furfuryl alcohol resin wood and a modification treatment process. The furfuryl alcohol resin wood comprises a wood body, a sliding block, a sliding groove, positioning holes, threaded holes, concave grooves, fixing bolts, a polyvinyl chloride coating, a wear-resistant layer, a wood grain layer, an anti-corrosion layer, a balance layer, through holes, a mounting groove, a spring and a ball, wherein the sliding block is installed on one side of the wood body, the positioning holes are formed in the two ends of the outer side of the sliding block correspondingly, the threaded holes are formed in the two sides of the top end of the sliding block correspondingly, the sliding groove is formed in one side of the wood body, and the concave grooves are formed in the two endsof the top end of the sliding groove correspondingly; and the through holes are formed in the centers of the interiors of the concave grooves, the fixing bolts are arranged inside the through holes,and the fixing bolts are connected with the threaded holes in a matched mode; according to the wood and the process, the treatment process comprises the following steps of preparing the furfuryl alcohol resin; degreasing; cleaning and drying; cross-linking treatment; acetylation and cyanation treatment; resin impregnation treatment; wood bleaching and dyeing, so that the wear resistance and the corrosion resistance of the furfuryl alcohol resin wood are effectively ensured.