43results about How to "Meet the requirements of outdoor use" patented technology

The invention discloses a fluorocarbon coating and a method for preparing colored aluminum profiles from the fluorocarbon coating, belonging to the field of chemical engineering coatings. The fluorocarbon coating comprises the following components in percentage by weight: 30wt%-70wt% of fluorinated acrylate oligomers, 0-50wt% of acrylate oligomers, 10wt%-40wt% of reactive acrylate monomers, 5wt%-10wt% of a photoinitiator, 5wt%-10wt% of a curing agent, 5wt%-30wt% of pigments, 0-7wt% of fillers and 0-3wt% of an aid. According to the fluorocarbon coating, dual curing including ultraviolet light curing and spontaneous curing can be realized; the inner wall or dead corners, which cannot be irradiated by ultraviolet light, of the profiles can be spontaneously cured within 24 hours, so that the problem that the surface of the UV ultraviolet light fluorocarbon coating cannot be irradiated by the ultraviolet light is solved; after the coating is cured, a paint film has rich colors and excellent weather resistance and can meet outdoor use requirements.

The invention discloses weather-resistant and flame-resistant light-diffusion PC applicable to outdoor lampshades and a preparation method of the weather-resistant and flame-resistant light-diffusion PC. The weather-resistant and flame-resistant light-diffusion PC is prepared by, by weight percentage, 81.25-90.17% of PC, 5-15% of toughening agent, 0.8% of light diffusion agent, 1.5-2.5% of flame retardant, 0.4-0.6% of synergic-effect flame retardant, 0.1-0.5% of hydrolysis-resistant agent, 0.1-0.5% of anti-UV agent, 0.03-0.05% of pigment, 0.3% of antioxidant and 0.3% of dispersing agent. The light-diffusion PC has the advantages that the light-diffusion PC is good in flame-retardant effect and weather resistance, indoor and outdoor use requirements can be satisfied, the light-diffusion PC is high in light permeability, good in toughness and ideal in appearance color, and consumers' requirements on lamps can be satisfied.

The invention relates to an environment-friendly weather-resistant flame-retardant PP material and a preparation method thereof. The PP material is prepared from the following components in percentage by weight: 20-30% of homo-polypropylene, 35-45% of polypropylene copolymer, 25-30% of a compound expansive type halogen-free flame-retardant, 5-10% of talcum powder, 0.2-0.4% of an ultraviolet light absorber, 0.2-0.4% of an antioxidant and 0.2-0.5% of a lubricant. The process comprises the following steps: firstly adding the materials in proportion into a mixing barrel to be uniformly mixed; then adding the mixture into a twin-screw extruder to be mixed, wherein the extruding temperatures of the first and second sections of the twin-screw extruder are 160-170 DEG C while the extruding temperatures of other sections are 170-190 DEG C and the total standing time of reactants in the twin-screw extruder is 3-5 minutes; and finally, cooling and slicing the extruded material obtained to obtain the environment-friendly weather-resistant flame-retardant PP material. By modifying PP, the material is environmentally friendly and flame-retardant, and also can satisfy the long-term anti-aging using requirement outdoors.

The invention relates to an LED street lamp. An LED light source module with a ballast is adopted, and a lamp base is only used for providing a power input interface and fixing the LED light source module. In use, one or more LED light source modules can be mounted on the lamp base according to actual lighting requirements, and the lamp base is used in cooperation with the self-ballast LED light source modules of various specifications, so that the total power of the LED street lamp is changed, different use requirements are met, the use range of the LED street lamp is expanded, and upgrading of the self-ballast LED light source modules is facilitated; in addition, water resistance and anti-creeping treatment and the like are carried out on connections of all components of the LED street lamp, so that the LED street lamp is good in overall waterproof effect, high in protection performance, long in service life, compact in structure, easy to produce and assemble and capable of completely meeting outdoor use requirements of the LED street lamp.

The invention relates to a double-pole isolating switch cabinet for an outdoor direct-current 1500 V contact net system, which belongs to a high-power direct-current double-pole isolating switch cabinet used for subways or urban light rail systems. The cavity of the cabinet body is separated into a front chamber, an upper back chamber and a lower back chamber through a longitudinal baffle and a horizontal baffle; an electric operating mechanism is arranged in the front chamber; the direct-current double-pole isolating switch is installed in the upper back chamber; a primary cable is arranged in the lower back chamber; a shell-type rain-proof ceiling is installed on the cabinet, a heat radiating blower is installed on the rain-proof ceiling, an air outlet of the heat radiating blower is connected with an air inlet of the rain-proof ceiling, periphery eaves of the rain-proof ceiling is provided with a plurality of air outlets, doors of the upper back chamber and the lower back chamber are both provided with air inlet shutters, and the upper part of the vertical baffle and the horizontal baffle are both provided with air vents; and the lower back chamber is also provided with an electric heater. A back door is provided with an electromagnetic lock provided with electric interlocking control. The invention not only can radiate heat, ventilate the cabinet and exhaust air, but also can prevent condensation and satisfy the usage requirement of outdoor environment.

The invention discloses a weather-resistant and flame-retardant PC/PBT alloy. The weather-resistant and flame-retardant PC/PBT alloy comprises raw materials of organosilicon modified polycarbonate, polybutylene terephthalate, compatibilizer, flame retardant, flame retardant auxiliary, anti-dripping agent, transesterification inhibitor, antioxidant, liquid lubricant, and UV absorber. According to the weather-resistant and flame-retardant PC/PBT alloy, an organic transesterification inhibitor having a good compatibility with a matrix is added to the alloy, so that the alloy material surface is smooth and free of pocking marks, and at the same time, the transesterification inhibitor used is organophosphorus which can play a synergistic effect with a brominated flame retardant, thereby reducing the using amount of the flame retardant.

The invention relates to a novel photovoltaic module which comprises a laminating piece and an alloy frame surrounding the peripheral edges of the laminating piece, wherein the alloy frame is an aluminum alloy frame and comprises the following trace elements in percentage by weight: 0.4-0.7% of silicon, less than or equal to 0.25% of iron, 0.05-0.4% of copper, 0.7-1.0% of magnesium, less than 0.2% of chromium, less than 0.1% of lead and less than 0.1% of tin. According to the invention, the novel aluminum alloy frame is adopted, so that the mechanical property of the photovoltaic module can be improved greatly, more strict outdoor use requirements are met, through testing, the photovoltaic module has higher yield strength, tensile strength and hardness, the mechanical property of the novel photovoltaic module provided by the invention is obviously superior to that of the photovoltaic module adopting a common No. 6063 aluminum alloy frame in the prior art and in addition, the weight and the production cost of the frame can be reduced.

The invention provides a high-strength PP material containing coffee grounds. The high-strength PP material comprises the following components: 35-45% of copolymerized PP, 30-45% of the coffee grounds, 5-10% of talcum powder, 0.2-0.4% of an ultraviolet light absorber, 0.2-0.4% of an antioxidant and 0.2-0.5% of a lubricant. The method comprises the following steps: adding the components into a mixing cylinder according to the ratio, and uniformly mixing; adding the mixture into a double-screw extruder for mixing; wherein the extrusion temperature of the first section and the second section of the double-screw extruder is 160-170 DEG C, the extrusion temperature of other sections is 170-190 DEG C, and the total residence time of reactants in the double-screw extruder is 3-5 minutes; and finally, extruding the obtained material, cooling and dicing to obtain the high-strength PP material containing the coffee grounds. By modifying PP, environmental protection and flame retardance are achieved, and the outdoor long-term anti-aging use requirement can be met.

The invention relates to an engineering plastic with high surface and high performance and preparing method thereof. The composite material comprises 30%-70% of PBT (polybutylece terephthalate) resin, 5%-15% of PETG (polyethylene terephthalate glycol), 5%-10% of LCP (liquid crystal polymer), 20%-50% of alkali-free glass fiber, 1%-5% of flexibilizer, 0.1%-1% of antioxidant, 0.1%-1% of UV (ultraviolet), 0.1%-1% of lubricant, 0.1%-1% of a coupling reagent, and 1%-3% of carbon black master batches. By adding PETG (polybutylece terephthalate), the surface of the prepared material is enabled to be smooth and free of floating fibers. By adding a liquid crystal polymer, the degree of crystallinity and the heat distortion temperature of the material are increased. The preparing method comprises the steps of after putting PBT (polybutylece terephthalate), PETG (polyethylene terephthalate glycol), LCP (liquid crystal polymer) and auxiliaries according to a certain proportion into a high mixing machine to mix for 2-5 min, firstly pouring the mixture into a main feeding opening of a twin-screw extruder, then making a glass fiber enter the twin-screw extruder from a glass fiber opening or a side feeding opening, extruding the glass fiber by the twin-screw for bar stretching, and finally carrying out water cooling, air drying and grain-sized dicing, wherein the temperature in the granulation process should be controlled at 180-240 DEG C, and the screw rotation speed should be controlled at 300-400 RPM. The engineering plastic with high surface and high performance has the advantages of being good in mechanical properties, smooth in surface, free of floating fiber, resistant to heat and weather and the like, and is applicable to the fields of automobile parts and, mechanical parts and the like.

The invention discloses a method for enhancement treatment through anaerobic heat treatment of poplar and impregnation with melamine urea formaldehyde resin. The method comprises the steps of preparing poplar wood, carrying out anaerobic heat treatment on the poplar wood, carrying out impregnation with the low-viscosity melamine urea formaldehyde resin, and carrying out drying and curing treatmentor pressurization drying and curing treatment. The method is characterized by comprising the steps that drying treatment is carried out on the poplar wood, dressing treatment is carried out on the dried poplar wood, the dressed poplar wood is subjected to anaerobic heat treatment under the protection of water vapor or nitrogen, the poplar wood subjected to anaerobic heat treatment is placed intothe normal-temperature and low-viscosity melamine urea formaldehyde resin for impregnation treatment at a certain temperature, after a certain time, the poplar wood is taken out and is placed on a support, residual resin on the surface of the poplar wood is scraped so as to enable the surface of the poplar wood to be subjected to air drying and then be subjected to drying and resin curing treatment, and therefore the poplar wood subjected to enhancement treatment through anaerobic heat treatment of the poplar and impregnation with the melamine urea formaldehyde resin is prepared.

The invention discloses an electrical cable higher in safety. The electrical cable comprises an outer protection sleeve and inner protection sleeves. The outer protection sleeve is composed of a flame retardant protective layer, a polyvinylidene chloride protection film layer, a shielding layer and an aluminum foil layer from outside to inside. The outer protection sleeve is internally provided with an inverted-Y-shaped framework. The tail end of the inverted-Y-shaped framework is fixedly connected with the aluminum foil layer. The inverted-Y-shaped framework is internally provided with an aluminum framework in an embedded mode. Each inner protection sleeve is sequentially divided into a high-intensity fiber yarn layer and a waterproof layer from outside to inside. According to the electrical cable higher in safety, the shielding layer is additionally arranged in the outer protection sleeve, most electromagnetic radiation can be shielded, the body health of a user in the using process is guaranteed, and the additionally-arranged aluminum cross-shaped framework makes electric contact with the aluminum foil layer in the outer protection sleeve, so that transmission consumption is lowered to the minimum; the high-intensity fiber yarn layer, the waterproof layer and a flame retardant protection layer are additionally arranged, so that the tensile, waterproof and fireproof performance of the electrical cable can be further enhanced.

The invention discloses a highly-anticorrosive and chromium-free anti-fingerprint coating and a preparation method thereof, and belongs to the technical field of coatings. The anti-fingerprint coatingcomprises 10-50 wt% of epoxy acrylic resin, 8-20 wt% of silica sol, 1-10 wt% of alkoxysilane, 1-5 wt% of ethylene glycol, 3-10 wt% of polytetrafluoroethylene wax, 0.5-3 wt% of a corrosion inhibitor,0.1-1 wt% of a wetting agent, 0.1-1 wt% of a defoamer, and the balance of deionized water; and the corrosion inhibitor is any one or two of sodium molybdate and ammonium molybdate. The invention alsoprovides a preparation method of the anti-fingerprint coating. The addition of the epoxy acrylic resin and anticorrosive assistants improves the yellowing resistance, the corrosion resistance and thesolvent resistance of the anti-fingerprint coating; the action of the alkoxysilane improves the adhesion and the paint spreading property of the coating, and makes the coating contain no toxic heavy metals and have good fingerprint resistance; and the preparation method is simple, and is suitable for industrial production.

The invention provides an LCD screen hardness test method. The LCD screen hardness test method comprises the following steps: an impact test is conducted on an LCD screen at normal temperature; whether the LCD screen works normally or not after the impact test is detected, and if yes, an impact test is conducted at preset temperature; whether the LCD screen works normally after the impact test at preset temperature or not is detected, and if yes, the LCD screen is cooled; the impact test is conducted on the LCD screen at normal temperature again after the LCD screen is cooled; whether the LCD screen which is subjected to the impact test at normal temperature after being cooled works normally or not is detected. According to the LCD screen hardness test method, the LED screen is directly subjected to the impact test, subjected to the impact test again at high temperature (55DEG C-65DEG C) and subjected to the impact test after being cooled from the high temperature, as a result, the situation that the LCD screen is subjected to impact or collision outdoors can be simulated, and whether the hardness of the LCD screen meets the requirement of outdoor use or not can be detected.

The invention belongs to the technical field of plastic products. An unmodified polypropylene material has the disadvantages of bad toughness, bad environment stress cracking resistance, easy brittle creaking, easy environmental light and heat ageing and the like, so the service life of products is influenced. The invention discloses a modified polypropylene material and a preparation method thereof. An antioxidant and an anti-UV agent are added according to the characteristics of the polypropylene material to improve the weather ability of polypropylene in order to improve the natural light ageing and thermo-oxidative aging performances of the polypropylene material, so a problem of the performance reduction caused by ageing when partial plastic pallets are used outdoor for a long term is solved, and relevant fields having high use requirements, such as the outdoor material circulation industry in the especially-long illumination time south, are satisfied.

The invention discloses an outdoor display screen unit board and a manufacturing method thereof, belonging to the technical field of semiconductor devices. The outdoor display screen unit board comprises a PCB (printed circuit board), a plurality of SMD (surface mount device) lamps and waterproof parts, wherein the SMD lamps are fixed to the PCB; each waterproof part is arranged on the external surface of each SMD lamp; each SMD lamp comprises one or a plurality of LED (light-emitting diode) chips, a sealing part and a pin; the sealing part is arranged around the LED chip; and the end of the pin extends to the outside of the sealing part, and is connected with the circuit on the PCB. The manufacturing method comprises the following steps: fixing, and adding the waterproof layer. The outdoor display screen unit board has the advantages of high quality, uniform color, simpler manufacturing requirements for outdoor SMD lamps, and much lower price and cost.

The invention provides an SMC table tennis table. The SMC table tennis table comprises an SMC table top, an SMC tennis net and an SMC bracket. The SMC tennis net comprises a left arc-shaped side frame, a right arc-shaped side frame, an upper cross beam and a lower cross beam. A plurality of mutually-connected baffles are arranged between the upper cross beam and the lower cross beam. The two ends of the lower cross beam are respectively and downwards provided with a fixing column. The SMC tennis net is fixed to the SMC table top through iron connecting pieces. The SMC bracket is mainly composed of bracket side beams and bracket cross beams, wherein the two sides of the upper portion of an arch-shaped beam body of each bracket side beam are respectively provided with a herringbone support which is fixedly connected with the SMC table top, the arch-shaped beam bodies are provided with fixed bosses which are fixedly connected with the SMC table top, and the bottoms of the arch-shaped beam bodies are provided with disk-type bases which are fixed to the ground through expansion bolts. The table tennis table top, the tennis net and the bases are all made of SMC materials; by the adoption of the SMC materials, the production cost is lowered, the whole weight of the SMC table tennis table is reduced, the requirement of users for outdoor use is met, and the SMC table tennis table is good in the comprehensive performance, firm and durable; meanwhile, the SMC table tennis table is integrally of an assembly structure, thereby being convenient to disassemble, assemble and transport.