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46results about How to "Meet long-term use requirements" patented technology

Multifunction step-in type artificial environment composite simulation durability experiment device

The invention discloses a multi-purpose step-in type man-made environment compound simulation endurance test installment. It has the test chamber body which connects with the controller, the CO2 system, the spray system, the salt mist system, sprays the system, the Canadian wet system, the refrigeration unit which connects the water pump, the basin. There is the air conditioning cabinet on the side of the test chamber body, on the air conditioning cabinet there is equipped with the evaporator and the heater on which is equipped with the air blower and the electrical machinery; the discharge pipe installs on the air conditioning cabinet base, the lamp stand, the nozzle installs on the test chamber body, there is equipped with the ultraviolet lamp tube on the lamp stand, there is equipped with the spray nozzle on the nozzle, the hydraulic cylinder control fluctuation of lamp stand and the nozzle. The invention has reasonable structure, can meet the test need of long-term, stable, safe, the reliable, can satisfy the user long-term operation requirements, and also has long use, operation, service convenient, service life, the modeling has the good user contact surface, causes the user operation and monitor more simpler and direct-viewing.
Owner:ZHEJIANG UNIV

Double-component organic silicon polyurethane elastomer and preparation method thereof

The invention discloses a double-component organic silicon polyurethane elastomer. The double-component organic silicon polyurethane elastomer consists of a component A and a component B, wherein the mass ratio of isothiocyano in the component A to hydroxyl in the component B is 1:(1.05-1.2); the component A is prepared by reacting the following raw materials in part by mass: 10 to 30 parts of polyisocyanate, 30 to 80 parts of polyalcohol, 0.1 to 10 parts of active hydrogen-containing siloxane and 0 to 10 parts of plasticizing agent; and the component B consists of the following raw materialsin part by mass: 10 to 50 parts of polyalcohol, 1 to 10 parts of reinforcing agent, 20 to 60 parts of inorganic filler, 3 to 10 parts of pigment, 0.1 to 10 parts of aid and 5 to 20 parts of plasticizing agent. The double-component organic silicon polyurethane elastomer has high elasticity, hardness, solvent resistance, wear resistance, flexure resistance, high and low temperature resistance, ultraviolet resistance and oxidative degradation resistance, low surface energy and high hydrophobicity, and can meet the long-term using requirement of the sport field.
Owner:GUANGDONG BOSHENG NEW MATERIAL TECH CO LTD

Flexible dye-sensitized solar battery with stainless steel as substrate and preparation method thereof

The invention discloses a flexible dye-sensitized solar battery with stainless steel as the substrate and a preparation method thereof. The battery adopts seven-layer composite structure which comprises a flexible stainless steel substrate layer, an insulation film layer, a titanium film layer, a titanium dioxide natural layer, a titanium dioxide nano tube array layer, an electrolyte layer and a flexible counter electrode which are arranged in sequence from the bottom layer to the top layer, and dye molecules are embedded into the titanium dioxide nano tube of the titanium dioxide nano tube array layer. The insulation film layer is prepared on the flexible stainless steel substrate layer, then, the titanium film layer is prepared on the surface of the insulation film layer, and a stainless steel flexible photo-anode with the stainless steel substrate layer / insulation film layer / Ti film layer / TiO2 natural layer / TiO2 nano tube array layer can be obtained through anodic oxidation in water-base or organic electrolyte; after the heat treatment, dye sensitization is performed to the obtained stainless steel flexible photo-anode and electrolyte is dripped into the photo-anode, and after encapsulation, the flexible dye-sensitized solar battery with stainless steel as the substrate is obtained. The invention has the advantages of simpler preparation technique, high battery conversion efficiency and low cost.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Safe relay module tester

The invention provides a safe relay module tester which comprises a mechanical structure portion and a circuit portion. The safe relay module tester is characterized in that a beam is fixed on a base through two vertical beams, a lifting arm is fixed on the beam through a supporting frame, an upper movable board is fixed at the lower end of the lifting arm, a lower bearing board is fixed on the base, a plurality of conducting probes which are matched with wiring terminals and testing points of a PCB board of a safe relay are fixed on the lower bearing board, and a plurality of pressing rods which exert pressure on the PCB board of the safe relay are fixed on the lower surface of the upper movable board. The tester can effectively and rapidly fix a safe relay module, and can rapidly and accurately achieve measurement of performance of the safe relay module. When an inferior-quality product appears, inspection personnel can be reminded of the inferior-quality product through a sound-light alarm signal, and detection efficiency of the safe relay module is effectively improved. The safe relay module tester has the advantages of being novel in structure, easy to operate, high in work efficiency and convenient to apply and popularize.
Owner:SHANDONG LAIEN OPTIC ELECTRONICS TECH

Complex environment simulation test system for ballastless track of high-speed railway

The invention discloses a complex environment simulation test system for a ballastless track of high-speed railway. The system comprises a test platform library body, a large-scale walk-in type temperature and humidity control system, a plate type ballastless track structure, a movable prototype fatigue test loading machine system, a sensor monitoring and detection system and an auxiliary settingand equipment support system. The system can be used for simulating real complex climate environment conditions and analyzing the influence of external factors such as complex temperature circulation,rainwater, freeze thawing, train loads and the like on the ballastless track structure and a lower foundation of the high-speed railway, a track structure service state and the like, and can also beapplied to relevant experiments and tests of various structures, components and equipment in other fields such as bridges, roadbeds, road surfaces, materials and the like, the application range is wide, and economic and social benefits are good.
Owner:BEIJING JIAOTONG UNIV

High- temperature-resistant dust-proof motor

The invention relates to a high-temperature-resistant dust-proof motor, which belongs to the technical field of motors. The high temperature-resistant dust-proof motor comprises a stator, a rotor, a left end cover, a right end cover and an outer sleeve, and is characterized in that a fan mechanism comprises a group of fan blades, a movable dustproof ring and a fixed dustproof ring, wherein the movable dustproof ring is fixed with a rotor shaft, the fixed dustproof ring is fixed with the left end cover and matched with the movable dustproof ring, and the group of the fan blades are arranged on the movable dustproof ring at intervals. The high temperature-resistant dust-proof motor has the advantages of preventing dust impurities and water vapor from invading into the stator and rotor from the left end cover, ensuring the service life of the motor, not only ensuring good sealing property,for avoiding leakage and representing safety and being convenient to manufacture, but also protecting a stator winding from being invaded by cooling water, preventing water short-circuit, having good cooling effect, meeting the long-term using requirement under a high-temperature environment, enabling the whole structure to be simple, being convenient to manufacture and mount, and being convenient to maintain.
Owner:常熟市第二特种电机有限公司(原常熟市第二特种电机厂)

Reinforced polypropylene material and preparation method thereof

The invention discloses a reinforced polypropylene material which comprises the following components in parts by weight: a, 10-90 parts of polypropylene resin; b, 0.5 to 25 parts of a compatilizer; c,5 to 60 parts of reinforced fibers; d, 0.1 to 20 parts of low-hardness toner; the reinforced fibers comprise a component I and a component II, wherein the component I is composed of reinforced fiberswith the length of 0.3 mm-0. 9mm and accounts for 55%-75% of the number of the reinforced fibers; the component II is prepared from reinforced fibers with the length of 1.1 mm to 1.9 mm and accountsfor 12 percent to 35 percent of the number of the reinforced fibers. According to the invention, the length and content distribution of the reinforced fibers are adjusted in the formula of the reinforced polypropylene material, so the retention length of reinforced fibers is greatly maintained in the reinforced polypropylene material, and the low-temperature toughness and the long weather resistance of the obtained reinforced polypropylene material are obviously improved by combining the low-hardness toner with a specific content and supplementing the compatilizer with a specific content.
Owner:KINGFA SCI & TECH CO LTD

Metallochrome hot stamping film and preparation method and application method thereof

The invention discloses a metallochrome hot stamping film. The metallochrome hot stamping film comprises a base layer, a release layer which is separably paved on the base layer, at least one transparent protecting layer which is fixedly paved on the release layer, an information layer which is imprinted on the transparent protecting layer, a plating layer which is paved on the information layer, and a hot melt glue layer which is fixedly paved on the plating layer. The invention also discloses a preparation method and an application method of the metallochrome hot stamping film. Compared with the prior art, the preparation method has the advantages that mass films can be plated once, and the films can be continuously hot stamped on an applying object, so that the plating production efficiency can be greatly improved; a plating technology which is efficient, simple, convenient, economic and firm is provided.
Owner:SVG TECH GRP CO LTD

Reinforced polypropylene material and preparation method thereof

PendingCN111534037AImproved low-temperature toughness and long-term weatherabilityMeet long-term use requirementsChemistryPolypropylene
The invention discloses a reinforced polypropylene material which comprises the following components in parts by weight: a, 10-90 parts of polypropylene resin, b, 0.5 to 25 parts of a compatilizer, c,5 to 60 parts of reinforced fibers, and d, 0.1 to 20 parts of low-hardness toner, wherein the reinforced fibers comprise a component I, a component II and a component III, the component I is composedof reinforced fibers with the length of 0.1-0.6 mm and accounts for 35-50% of the number of the reinforced fibers, the component II is composed of reinforced fibers with the length of 0.7-1.3 mm andaccounts for 35-45% of the number of the reinforced fibers, and the component III is composed of reinforced fibers with the length of 1.4-2.0 mm and accounts for 5-20% of the number of the reinforcedfibers. According to the invention, the length and content distribution of the reinforced fibers are adjusted in the formula of the reinforced polypropylene material, according to the reinforced polypropylene material, the retention length of reinforced fibers is greatly maintained in the reinforced polypropylene material, and the low-temperature toughness and the long weather resistance of the obtained reinforced polypropylene material are obviously improved by combining the low-hardness toner with a specific content and supplementing the compatilizer with a specific content.
Owner:KINGFA SCI & TECH CO LTD

Preparation method of melt-blown electret polymer filter material

The invention discloses a preparation method of a melt-blown electret polymer filter material, which comprises the following steps: S1, weighing a certain amount of polypropylene, an organic peroxide,a triazine derivative and a bacteriostatic agent, uniformly mixing, and carrying out extrusion modification reaction to obtain modified polypropylene master batch; S2, uniformly mixing the modified polypropylene master batch, polytetrafluoroethylene master batch, polypropylene master batch and polypropylene grafted maleic anhydride, heating for melting, and spraying a melt through a spinneret plate; S3, synchronously spraying and stretching the melt by taking fluidized modified nano activated carbon particles as traction airflow, and applying a magnetic field in the process, so that the concentration of the modified nano activated carbon particles is changed in a gradient manner from the center to two sides; and performing corona discharge, cooling and rolling to obtain the filter material disclosed by the invention. The filter material prepared by the invention has excellent characteristics of polypropylene and polytetrafluoroethylene materials, has efficient filtration and antibacterial properties, and meets the use requirements of melt-blown cloth and other filter materials in a long-term severe environment.
Owner:浙江派菲特新材料科技有限公司

Antioxidant coating for C/ZrC-SiC composite material, and preparation method thereof

The invention relates to an antioxidant coating for a C / ZrC-SiC composite material, and a preparation method thereof. The antioxidant coating comprises an HfC-HfB2 coating and a SiC coating which arealternately formed on the C / ZrC-SiC composite material. The preparation method comprises the following steps: the surface of the C / ZrC-SiC composite material is coated with a ceramic slurry containingHf powder, B powder, ethyl alcohol and phenolic resin, the HfC-HfB2 coating is formed after cracking, and then the SiC coating is deposited; and the above step is repeated (N-2) / 2 times so as to formthe antioxidant coating on the surface of the C / ZrC-SiC composite material. The method has the advantages of simple process, low preparation cost, solving of the problems of uniform distribution of HfC-HfB2 and SiC and combination with a matrix, remarkable improvement of the ablation resistance and oxidation resistance of the C / ZrC-SiC composite material, and further improvement of the use temperature of the C / ZrC-SiC composite material.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Testing method for uniformity of light guide plate

InactiveCN104075878AEffectively simulate problems such as poor light conductivity and uneven lightImprove flatnessTesting optical propertiesLight guideEngineering
The invention discloses a testing method for uniformity of a light guide plate. The method comprises the steps that the light guide plate to be tested is arranged inside an incubator, so that high-temperature aging testing of the light guide plate is carried out, and the light guide plate is taken out of the incubator after testing is finished; the light guide plate is arranged inside a hot and cold impact machine, so that temperature impact testing of the light guide plate is carried out, and the light guide plate is taken out of the hot and cold impact machine after testing is finished; the light guide plate obtained after the high-temperature aging testing and the temperature impact testing are carried out is arranged on a testing platform in a standing mode under normal temperature; the light guide plate and a light source are arranged under a darkroom environment, the light source is lightened, brightness of a plurality of specific testing points on the light guide plate is tested, and then the uniformity of the light guide plate is obtained after the high-temperature aging testing and the temperature impact testing are carried out. The testing method for the uniformity of the light guide plate is easy and convenient to implement, the problems that after the light guide plate is used for a long time, the light guide plate is poor and light rays are not uniform can be effectively simulated, and therefore the superior light guide plate with the high bending resistance can be screened out.
Owner:SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1

Quick-cooling anti-impact PPR pipe as well as preparation method and application thereof

The invention provides a quick-cooling anti-impact PPR pipe as well as a preparation method and application thereof. The quick-cooling anti-impact PPR pipe comprises the following components in parts by weight: 100 parts of polypropylene random copolymer; 1-4 parts of an alpha nucleating agent; 3-8 parts of an elastomer toughening agent; 0.05-0.5 part of talcum powder; 0.01-0.1 part of a coupling agent; and 0-10 parts of an auxiliary agent. The particle size of the talcum powder is 10-20 [mu]m, the elastomer toughening agent is a propenyl elastomer, the hardness shore A is 75-90, the tensile elongation at break is greater than or equal to 700%, and the tensile strength is greater than or equal to 13 MPa. The cooling rate of the prepared quick-cooling impact-resistant PPR pipe can be as low as 1.80 DEG C / s, the production speed is increased by at least 19%, the pipe has good low-temperature impact resistance, the notch simply supported beam impact strength at -20 DEG C can reach 25 MPa, the low-temperature drop hammer impact passing rate is increased by at least 52.8%, and the hydrostatic experiment passing rate under the conditions of 20 DEG C, 1 h and 95 DEG C and 22 h is 100%. The long-term use requirement of the PPR pipe is met.
Owner:湖南联塑科技实业有限公司

High-temperature-resistant concrete

The invention relates to high-temperature-resistant concrete. The high-temperature-resistant concrete comprises, by weight percentage, 12-19% of low-calcium aluminate cement, 5-15% of high-bauxite clinker powder, 30-35% of high-bauxite clinker sand and 30-40% of high-bauxite clinker block, wherein the water-cement ratio of the low-calcium aluminate cement is 0.32-0.38. The high-temperature-resistant concrete is high in strength, resistant to high temperature and low in cost.
Owner:SHANGHAI BAOYE CONSTR INDAL FURNACE ENG TECH +1

Spray nozzle brick for oxy-fuel combustion spray gun, manufacturing method and spray gun and melting furnace with spray nozzle brick

The invention discloses a spray nozzle brick for an oxy-fuel combustion spray gun, a manufacturing method, the oxy-fuel combustion spray gun and a glass melting furnace with the spray nozzle brick, glass and a firing method of the glass. The spray nozzle brick has the beneficial effect that a spraying opening has the advantages of wide fuel use range (capable of using natural gas, coke stove gas, heavy oil, coal tar and petroleum tar powder), sufficient combustion, large flame coverage surface, high flame blackness, less NOx generation amount, gradient combustion, adjusting of oxidizing and reduction atmospheres according to types of melting glasses and the like, the melting atmosphere of the glass melting furnace can be adjusted, and the oxy-fuel combustion and oxy-fuel combustion supporting technologies are favorable for being popularized and applied in the glass melting furnace.
Owner:QINHUANGDAO GLASS IND RES & DESIGN INST

Automatic test device for simulating ocean tide environment

The invention discloses an automatic test device for simulating an ocean tide environment. A sea water circulating controller comprises a water inlet device and a water outlet device; a water inlet pump of the water inlet device and a water outlet pump of the water outlet device are variable-frequency water pumps; the water inlet device is communicated with a water inlet of a main corrosion working chamber and a water outlet of an auxiliary corrosion working chamber respectively; the water outlet device is communicated with a water outlet of the main corrosion working chamber and a water inlet of the auxiliary corrosion working chamber respectively; and a first flow sensor is arranged in the water inlet device, and a second flow sensor is arranged in the water outlet device. A sea water temperature controller is arrange at the bottom of the main corrosion working chamber; a low liquid level controller and a high liquid level controller are fixedly arranged in the main corrosion working chamber; an air blowing port of an air blowing device and an illumination device are positioned above the high liquid level controller; and the water inlet device, the water outlet device, the sea water temperature controller, the air blowing device and the illumination device are connected with the controller respectively. The automatic test device can effectively simulate the actual ocean tideenvironment.
Owner:ZHEJIANG UNIV

High-temperature-resistant motor

The invention discloses a high-temperature-resistant motor, belonging to the technical field of motors. The high-temperature-resistant motor comprises a stator, a rotor, a left end cover, a right end cover and a jacket, and is characterized in that the jacket is provided with a first water cooling cavity; the left end of the first water cooling cavity is closed by a left space ring, and the rightend of the first water cooling cavity is closed by a right space ring; a first water inlet connector, a first water outlet connector and a power wire holder are arranged on the outer wall of the jacket in an extending way; the first water inlet connector and the first water outlet connector are maintained in a diagonal relationship and respectively communicated with the first water cooling cavity; and a winding outgoing line used for winding of the stator and isolated from the first water cooling cavity is formed in the first water cooling cavity and led to an outgoing line transition pipe ofthe power wire holder. The high-temperature-resistant motor has the advantages of being capable of guaranteeing good sealing performance, avoiding leakage and being safe, being capable of being convenient to manufacture, being capable of guaranteeing the stator winding from being intruded by the cooled water, being capable of preventing water short circuit, achieving a good cooling effect and meeting the long-term using requirement in a high-temperature environment, being capable of being convenient to manufacture and install, and being capable of being convenient to maintain due to the concise integral structure.
Owner:常熟市第二特种电机有限公司(原常熟市第二特种电机厂)

Device for controlling communal facility environmental peculiar smell gas and technology

The invention discloses a device for controlling communal facility environmental peculiar smell gas and a technology. The device is an automatic device for controlling various multi-layer processing units through a controller based on various site sensor detecting data, in order to control the communal facility environmental peculiar smell gas and an environmental technology. The device comprises a climate and weather simulating system, a controller, various communal facility site sensors and various multi-layer processing units, wherein the site sensors comprise an ammonia gas sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, a carbon dioxide sensor, a wind speed sensor, a wind direction sensor, an environmental temperature sensor, a noise sensor, an ozone sensor, a toluene sensor, a formaldehyde sensor, a nitrogen dioxide sensor, a sulfur dioxide sensor, a brightness sensor, a humidity sensor, rain and snow sensors, a flowing data sensor and a sensor expanding unit; and various multi-layer processing units comprise an oxygenating unit, a humidifying unit, a peculiar smell removing unit, a sterilizing unit, a gas filtering unit, a gas exchanging unit, a stifling unit, space pressure increasing and releasing units and a processing expanding unit. With adoption of the device provided by the invention, climates and weathers can be simulated, thus, the environmental gas of the communal facility can be effectively controlled.
Owner:BEIJING WANLONG HUACHUANG GARDEN ENVIRONMENTAL TECH

Device for controlling communal facility environmental peculiar smell gas and technology under simulated weather

The invention discloses a device for controlling communal facility environmental peculiar smell gas and a technology under simulated weather. The device is an automatic device for controlling various multi-layer processing units through a controller based on various site sensor detecting data, in order to control the communal facility environmental peculiar smell gas and an environmental technology. The device comprises a climate and weather simulating system, a controller, various communal facility site sensors and various multi-layer processing units, wherein the site sensors comprise an ammonia gas sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, a carbon dioxide sensor, a wind speed sensor, a wind direction sensor, an environmental temperature sensor, a noise sensor, an ozone sensor, a toluene sensor, a formaldehyde sensor, a nitrogen dioxide sensor, a sulfur dioxide sensor, a brightness sensor, a humidity sensor, rain and snow sensors, a flowing data sensor and a sensor expanding unit; and various multi-layer processing units comprise an oxygenating unit, a humidifying unit, a peculiar smell removing unit, a sterilizing unit, a gas filtering unit, a gas exchanging unit, a stifling unit, space pressure increasing and releasing units and a processing expanding unit. With adoption of the device provided by the invention, climates and weathers in seasons can be simulated, thus, the environmental gas of the communal facility can be effectively controlled.
Owner:BEIJING WANLONG HUACHUANG GARDEN ENVIRONMENTAL TECH

Device for controlling peculiar smell gas and technology

The invention discloses a device for controlling peculiar smell gas and a technology. The device is an automatic device for controlling various multi-layer processing units through a controller based on peculiar smell detecting data, in order to control communal facility environmental peculiar smell gas and an environmental technology. The device comprises a climate and weather simulating system, a controller, various communal facility site sensors and various multi-layer processing units, wherein the site sensors comprise an ammonia gas sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, a carbon dioxide sensor, a wind speed sensor, a wind direction sensor, an environmental temperature sensor, a noise sensor, an ozone sensor, a toluene sensor, a formaldehyde sensor, a nitrogen dioxide sensor, a sulfur dioxide sensor, a brightness sensor, a humidity sensor, rain and snow sensors, a flowing data sensor and a sensor expanding unit; and various multi-layer processing units comprise an oxygenating unit, a humidifying unit, a peculiar smell removing unit, a sterilizing unit, a gas filtering unit, a gas exchanging unit, a stifling unit, space pressure increasing and releasing units and a processing expanding unit. With adoption of the device provided by the invention, climates and weathers in seasons can be simulated, thus, the environmental gas of the communal facility can be effectively controlled.
Owner:BEIJING WANLONG HUACHUANG GARDEN ENVIRONMENTAL TECH

Silane crosslinked polyethylene resin composition for pipes and method for preparing pipes

PendingCN113956400AGood high temperature creep resistanceMeet long-term use requirementsTubular articlesPolymer sciencePtru catalyst
The invention relates to a silane crosslinked polyethylene resin composition for a pipe and a method for preparing the pipe, and belongs to the technical field of pipe preparation, the composition comprises the following components in parts by weight: 100 parts of polyethylene resin, 0.5-4 parts of unsaturated silane, 0.05-0.5 part of a grafting initiator, 0.2-0.5 part of an antioxidant and 0.02-0.2 part of a crosslinking catalyst. The preparation method comprises the following steps: respectively metering polyethylene resin, unsaturated silane, a grafting initiator and an antioxidant, adding into an extruder, grafting with silane in the presence of the initiator to form silane grafted polyethylene, and extruding to form a pipe; and then under the action of water and a crosslinking catalyst, carrying out hydrolysis and condensation reaction to finally obtain the silane crosslinked polyethylene pipe. The silane crosslinked polyethylene pipe prepared from the composition has excellent high-temperature creep resistance, has excellent long-term hydrostatic strength under a high-temperature condition, and can meet the long-term use requirements of hot water pipeline conveying systems such as floor heating and the like.
Owner:SINOPEC YANGZI PETROCHEM +1

Testing method for finding out dirt and abnormality of LCD

The invention provides a testing method for finding out dirt and abnormality of an LCD. The method comprises the steps of inspecting the general image quality; performing vibration testing, namely, assembling the LCD in a packing box, packing the LCD according to the LCD sealing packing box standard, and then performing the axial vibration testing in the set axial direction; inspecting the general image quality after each axial vibration testing; performing mechanical impact testing, namely, fixing the LCD on a fixed workpiece, fixing the fixed workpiece on an impact stand, and performing the impact stress testing for the set impact wave in the set axial direction; repeating the general image quality inspection after each axial impact stress test; inspecting the general quality image again; determining that the LCD is unqualified in case of dirt or chips, and otherwise, determining that the LCD is qualified. With the adoption of the method, the problems such as dirt and chips of the LCD after long-term transporting and use can be found out.
Owner:OCEANKING DONGGUAN LIGHTING TECH +2

Testing method for bending resistance of light guide plate

InactiveCN104076059AEfficiently simulate deformationEfficiently simulate issues such as crackingMaterial thermal analysisLight guideEngineering
The invention discloses a testing method for bending resistance of a light guide plate. The method comprises the steps that the light guide plate to be tested is suspended inside an incubator, so that high-temperature aging testing of the light guide plate is carried out, and the light guide plate is taken out of the incubator after testing is finished; the light guide plate is suspended inside a hot and cold impact machine, so that temperature impact testing of the light guide plate is carried out, and the light guide plate is taken out of the hot and cold impact machine after testing is finished; the light guide plate obtained after the high-temperature aging testing and the temperature impact testing are carried out is arranged on a testing platform in a standing mode under normal temperature; whether the light guide plate cracks or deforms or whether surface distribution of the light guide plate is uniform or not is detected visually under the illumination condition with the preset illumination value. The testing method for the bending resistance of the light guide plate is easy and convenient to implement, the problem that after being used for a long time, the light guide plate deforms or cracks or the like can be effectively simulated, and therefore the superior light guide plate with the high bending resistance can be screened out, and a basis is provided for product development. The screened light guide plate still has the good flatness and reliability after being used for a long time, and long-term use requirements of customers are met.
Owner:SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1

Bending-resistant and high-bonding-strength flexible LED packaging adhesive and preparation method thereof

ActiveCN111944462AReduce chloroformCraft green simpleNon-macromolecular adhesive additivesPolymer scienceAdhesive
The invention belongs to the field of photovoltaic packaging, and particularly relates to a bending-resistant and high-bonding-strength flexible LED packaging adhesive and a preparation method thereof. The flexible LED packaging adhesive is prepared from the following raw materials: acrylate containing a phosphoric acid group, ethoxy polyformamide, an organic solvent and an auxiliary agent, the bending-resistant high-bonding-strength flexible LED packaging adhesive prepared by the invention not only has excellent bonding strength, but also has excellent high peel strength, bending resistance,tear resistance, impact resistance, good cold and hot impact resistance, thermal stability and yellowing resistance, greatly improves the outdoor strong dynamic and static load of a flexible LED lamp,and improves the service life and the use stability of a flexible LED lamp under outdoor strong dynamic and static load.
Owner:CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD

A kind of hot-melt thermally conductive adhesive for refrigerator or freezer evaporator and its preparation and application

The invention discloses hot-melt heat-conducting glue for a refrigerator or freezer evaporator and the preparation and application thereof.The hot-melt heat-conducting glue contains, by mass, 10-25 parts of halogenated butyl rubber, 5-10 parts of liquid butyl rubber, 20-30 parts of polyisobutene, 10-20 parts of tackifier, 2-5 parts of paraffin, 5-10 parts of white oil, 1-2 parts of coupling agent, 60-100 parts of heat conduction filler, 1-4 parts of antioxidant and 1-4 parts of antiager.The hot-melt heat-conducting glue has excellent heat conduction property, adhesive property, anti-aging property and anti-corrosion property, reliability is high enough to meet the requirement for long-term use of a refrigerator, and corrosion to metal including copper and aluminum is avoided.Operation can be conducted with automatic equipment, glue application and liner wrapping can be conducted synchronously, and production efficiency is improved greatly; complete bubble-free attaching of an evaporator pipeline and a refrigerator or freezer liner shell can be achieved, heat transfer is quick, heat loss is low, and uniform coldness and clear frost of freezing and cold storage cavities are realized.
Owner:国科广化(南雄)新材料研究院有限公司 +1

SAN resin composite material and preparation method thereof

InactiveCN111057328AGood solvent resistanceN-propanolGlass fiberAcetic acid
The invention provides a solvent-resistant SAN resin composite material and a preparation method thereof. Based on the total weight, the SAN resin composite material comprises the following components: 42.4-58% of SAN resin, 18.5-21.5% of glass fiber, 20-30% of PMMA resin, 3-5% of a compatilizer, 0.2-0.6% of an antioxidant, and 0.3-0.5% of a lubricant. According to the SAN resin composite materialprovided by the invention, a certain amount of PMMA resin is mixed into an existing SAN resin and glass fiber reinforced material; the composite material has better solvent resistance; the problem that an existing AS-GF20 material is cracked when soaked in n-propyl alcohol and glacial acetic acid is effectively solved, cracking cannot occur after the AS-GF20 material is soaked in carbon tetrachloride, n-propyl alcohol and glacial acetic acid for a long time, and therefore the long-term use requirements of different types of air conditioner fan blades such as axial flow fan blades and centrifugal fan blades in the kitchen environment can be met.
Owner:广东顺威赛特工程塑料开发有限公司

Calcium supplement granules suitable for children and preparation method of calcium supplement granules

The invention belongs to the technical field of healthcare products, and particularly relates to calcium supplement granules suitable for children and a preparation method of the calcium supplement granules. The calcium supplement granules suitable for children comprise, by mass, 30.0%-58.0% of calcium gluconate, 7.0%-69.0% of sugar alcohols, 0%-15% of maltodextrin, 0.5%-10.0% of milk powder, and0.5%-10.0% of polydextrose. The calcium supplement granules suitable for children serve as a dietary nutrition supplement for providing elemental calcium for 1-year-old to 10-year-old children, and are scientific and reasonable in formula. By adopting the calcium supplement granules, the defect can be effectively overcome that in the prior art, due to application of some calcium supplement products, calcium accumulation inside a human body is caused and accordingly leads to human-body malabsorption; and the calcium absorption rate of the human body is increased, the bioavailability of calciumis improved, children's immunity can be better improved, and thus development of children is promoted.
Owner:广州富诺营养科技有限公司

A nanofiltration membrane for water purification and its preparation method and application

The invention discloses a nanofiltration membrane used for water purification, a preparation method and application thereof. The nanofiltration membrane comprises a modified PVB porous base membrane and a polyamide ultra-thin desalination layer formed by reaction on one side surface of the modified PVB porous base membrane. The polyamide ultra-thin desalination layer and the PVB porous base membrane are combined by chemical bonds, so that the base membrane and the polyamide separation layer are firmly bonded and the separation layer is complete and free of defects, which solves the problem of the current nanofiltration membrane. The problem of weak binding force caused by simple adhesion combination avoids the degradation of membrane performance such as separation layer defects, shedding, and delamination of the nanofiltration membrane due to operating pressure fluctuations, flow rate changes, and cleaning during long-term operation. or failure issues. The nanofiltration membrane of the present invention has good hydrophilicity, high water flux, double-effect heavy metal removal ability and antibacterial property, excellent swelling resistance and pollution resistance, stable long-term use performance, and is suitable for water purification equipment requiring high filtration accuracy. Especially household water purification equipment.
Owner:美蓝飘尔(上海)过滤设备有限公司
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