52results about How to "Meet the needs of long-term use" patented technology

The invention discloses a carbon fiber packaged optical fiber Bragg grating sensor and a manufacturing method thereof. By being packaged in a carbon fiber, the optical fiber Bragg grating has an excellent sensing character and maximum data linearity of 0.99949. The designed sensor has the advantages that the packaging process is simple and the material cost is low. Various individual long-term tests show that the wavelength drifting of the sensor is 0, the repeatability and stability are excellent, and the sensor is fit for large-scale batch production and meets the demand of long-term use.

The invention relates to a mobile aerial sunshade flying tent and an implementation method thereof. Traction and movement of the flying tent body are performed by using an unmanned aerial vehicle group. The wind speed and the wind direction are acquired and analyzed, and the attitude of the flying tent body is adjusted in real time so that the wind force is enabled to form force balance among theupward thrust formed by the flying tent body, the upward traction force of the unmanned aerial vehicles and downward pull force of the pull-down rope. The flying tent body is enabled to more easily reach the force balance to be in the stable state by using coordinated control of the unmanned aerial vehicles and winches without accurately controlling the traction force of the unmanned aerial vehicles; besides, the flying tent body and the unmanned aerial vehicles can be prevented from being blown away under limitation of the winches in case of outburst wind. Persistent working of the unmanned aerial vehicle group can be guaranteed by two power supply modes so as to meet the requirement of long time service; and the lower power line is arranged on the pull-down rope so that the lower power line can be prevented from being pulled to be damaged and the power supply stability can be guaranteed.

The invention discloses a non-yellowing polyurethane one-component moisture curing agent and a preparation method thereof. The non-yellowing polyurethane one-component moisture curing agent is prepared from the following raw materials by weight percent: 18-25% of a hexamethylene diisocyanate derivative, 0-5% of polyol, 8-18% of a hydroxyl acrylic resin prepolymer, 55-65% of an ester solvent and 0-5% of other additives. The non-yellowing polyurethane one-component moisture curing agent product provided by the invention is more uniform in molecular weight distribution, better in comprehensive performance and fewer in free isocyanate toxic monomers; the product produced by branching of hydroxyl acrylic resin not only has the characteristics, such as adhesion, acid and alkali resistance and gloss retention, of the hydroxyl acrylic resin, but also has the weather resistance, wear resistance and the like of polyurethane, and does not yellow after being used for a long time. The preparation method is simple, no post-treatment is needed, and general production equipment can be used for production without needing addition of new equipment; the preparation method has the characteristics of being low in equipment cost and simple to operate; furthermore, a large amount of energy does not need to be used in a treatment process, so that the moisture curing agent is environment-friendly.

The invention discloses a high-intensity food packaging bag, which is prepared from the following raw materials in parts by weight: 20 to 30 parts of polyethylene, 15 to 25 parts of ethyl cellulose, 12 to 15 parts of plant fiber, 10 to 20 parts of vinyl trimethoxy silane, 5 to 10 parts of kieselguhr, 2 to 4 parts of glycerol, 3 to 5 parts of calcium carbonate, 1 to 3 parts of lubricating agents and 0.4 to 0.5 part of toughening agents. The high-intensity food packaging bag has the advantages that the weight is light; good intensity and toughness are realized; the plant fiber is added, so thata good environment protection effect is achieved; the environment pollution is avoided; meanwhile, the use requirements of people for a long time can also be met. The invention also discloses a preparation method of the high-intensity food packaging bag.

The invention relates to a miniaturized power generating apparatus. The miniaturized power generating apparatus is characterized by comprising a generating structure, a base, an installation sleeve and a pressing seesaw structure, wherein the installation sleeve is arranged on an installation frame and can swing up and down; the generating structure comprises a magnetic conductive rod, a solenoid coil, an upper magnetic conductive plate, a permanent magnet and a lower magnetic conductive plate; the upper magnetic conductive, the lower magnetic conductive plate and the permanent magnet are fixed in the installation sleeve, and the permanent magnet is disposed between the left end of the upper magnetic conductive plate and the left end of the lower magnetic conductive plate; the magnetic conductive rod is fixed on the installation frame, the left end of the magnetic conductive rod is close to the permanent magnet and is disposed between the left end of the upper magnetic conductive plate and the left end of the lower magnetic conductive plate, the right end of the magnetic conductive rod is disposed between the right end of the upper magnetic conductive plate and the right end of the lower magnetic conductive plate, and the upper magnetic conductive plate and the lower magnetic conductive plate can swing up and down relative to the solenoid valve and the magnetic conductive rod; and the pressing seesaw structure is rotationally arranged on the base, and the pressing seesaw structure drives the left end and the right end of the installation sleeve to swing up and down. The miniaturized power generating apparatus has the advantages of high work reliability, large generating capacity and small volume, thereby satisfying a round-the-clock long application demand for users, is economical and environmentally friendly, and is wide in adaptability.

The invention provides a polybutylece terephthalate (PBT) composite material for exterior decoration parts of automobiles. The PBT composite material is prepared from the following components in parts by weight: 100 parts of PBT resin, 20-30 parts of glass fibers, 5-10 parts of polyimide fibers, 1-5 parts of a coupling agent, 0.5-2 parts of a compatilizer, 1-5 parts of a heat resistant agent, 2-6 parts of flexibilizer and 0.5-2 parts of an antistatic agent. An enhancing material is compounded from glass fibers and polyimide fibers and is used in the PBT composite material; while high heat resistance, high tensile strength, weather resistance, chemical corrosion resistance and other excellent properties of the PBT composite material are maintained, the impact resistance of the PBT composite material can be effectively improved, and the impact resistance of the PBT composite material at low temperature can be especially improved by using the polyimide fibers; and the PBT composite material with excellent comprehensive performance can be economically and effectively prepared due to the large using amount of glass fibers and small using amount of polyimide fibers, and the requirement for long-term application of exterior decoration parts of automobiles in cold regions can be met.

The invention discloses a preparation method for a heat insulation aluminum alloy profile. The preparation method comprises the following steps that sand blasting treatment is carried out on a glue injection notch of an aluminum alloy base material, and a sand surface is formed on the surface of the glue injection notch; the aluminum alloy base material is subjected to passivation pretreatment; the aluminum alloy base material is subjected to primer spraying treatment by selecting a PVDF fluorocarbon coating and is dried; the aluminum alloy base material is subjected to finish paint spraying treatment by selecting a PVDF fluorocarbon coating and is dried; the aluminum alloy base material is cured; the glue injection notch of the aluminum alloy base material is subjected to embossing treatment, and a concave tooth opening is formed in the edge of the glue injection notch; heat insulation glue is injected into the glue injection notch, and dried and cured; and the aluminum alloy base material subjected to glue injection is subjected to bridge cutting treatment to obtain a finished product. By the adoption of the preparation method, the aluminum alloy profile good in weather resistance and heat insulation effect can be obtained, the longitudinal shear mechanical property and the like meet the performance requirements, and the aluminum alloy profile can be suitable for outdoor high-strength sunlight irradiation.

A light guide plate torsion test method includes the following steps: a light guide plate is provided, whether the light guide plate is normal is checked, the light guide plate is cut into a preset area, deformation test of the light guide plate is performed to obtain the light guide plate theory deformation, two fixtures are provided, and are respectively used for applying external forces in opposite directions onto opposing two ends of the light guide plate, the opposing two ends of the light guide plate are respectively clamped in the two fixtures to enable the light guide plate to form a preset torsion contortion and maintain for the first preset time, the light guide plate is removed from the two fixtures, the light guide plate is stood for at least second preset time at room temperature, deformation test of the light guide plate is performed to obtain the light guide plate actual deformation, when the light guide plate is normal, difference between second deformation and first deformation is obtained, and when the difference value is within a predetermined range, torsional stiffness and torsional toughness of the light guide plate can be determined to meet the requirements of long-term use. The test method can effectively screen out light guide plate products which may cause problems after long-term use.

The invention relates to a method for testing the abrasion resistant performance of a mesh spot of a light guide plate. According to the method for testing the abrasion resistant performance of the mesh spot of the light guide plate, firstly, the light guide plate is subjected to high temperature aging, and a high temperature aging method is used for simulating the state of the mesh spot of the light guide plate which is used for a long time; and secondly, friction force is applied on a testing spot which is selected on the light guide plate, the testing spot of the light guide plate is rubbed back and forth, and then whether the testing spot is normal is tested. Through the testing of the abrasion resistant performance of the mesh spot of the light guide plate after the light guide plate is used for the long time, the problems that the adhesive force of the mesh spot of the light guide plate is lowered after a long time use, the mesh spot is not resistant to abrasion and prone to fall off, the abrasion resistant performance is poor and the like can be found, and therefore the good abrasion resistant performance or the poor abrasion resistant performance of the mesh spot of the light guide plate can be tested out, the problems that the mesh spot falls off, is bad, is poor in abrasion resistant performance and the like after the long time use can also be tested out, products with the problems that the mesh spot of the light guide plate may mutate so that the light guide rate of the products is poor, light passing through the light guide plate is not even and the like can be sorted out effectively, and a basis can be provided for sorting out high quality light guide plates for the development of the products.

The invention provides a buckle type connecting piece reliability test method, comprising the steps of: providing buckle type connecting pieces prepared by materials; detecting whether the materials of the buckle type connecting pieces are qualified; dismounting the buckle type connecting pieces on a piece to be mounted to obtain assembling performance of the buckle type connecting pieces; assembling the buckle type connecting pieces on the piece to be mounted and then performing waterproofness test to obtain waterproofness of the buckle type connecting pieces; performing falling test to obtain sudden impact resistance of the buckle type connecting pieces; performing alternate hot and humid test to detect whether the environmental resistance design of the buckle type connecting pieces is defective; and evaluating reliability of the buckle type connecting pieces. The test method tests the buckle type connecting pieces in fives aspects including materials, assembling performance, waterproofness, sudden impact resistance and environmental resistance design, and effectively simulates design defects of the buckle type connecting pieces after a long-term of use.

The invention relates to a moving and static stabilizer between spine plates, and belongs to the technical field of imbedded objects in human body of medical devices. The moving and static stabilizeris of an integrated structure and is formed by a first connection part, a second connection part, an engagement part, first fixed parts and second fixed parts. The first connection part and the secondconnection part are respectively arranged on two sides of the engagement part. The first fixed parts are symmetrically arranged on outer side face of the upper end of the first connection part. The second fixed parts are symmetrically arranged on the outer side face of the upper end of the second connection parts. The engagement part is of a straight plate-shaped structure. According to the invention, elastic supporting-away between spines and front and back bending of the spine can be achieved; front and back translation and left and right lateral movement between vertebra joints can be achieved; in addition, the stabilizer is not forced to be embedded to be close to the spinal dura mater, the operation time is short, the operation safety is high and the stabilizer can be used for caseswith quite small spine interval; and long-term use demands of patients are met.

The invention discloses a charging method and system for a split type process calibration instrument and a storage medium, and the method comprises the steps: S100, receiving the first current electric quantity of a calibration instrument host in a real-time and wireless manner through an operation terminal, and determining the second current electric quantity of the calibration instrument host; s200, according to the current power consumption of the current working mode, calculating a first working time length of the calibrator host by using the first current electric quantity, and calculating a second working time length of the operation terminal by using the second current electric quantity; s300, multiple times of time length comparison are sequentially executed; cyclically executing multiple times of time comparison; and S400, multiple comparison results are received, the operation terminal is immediately executed to reversely charge the calibration instrument host according to the comparison results, or the operation terminal is immediately executed to send a charging instruction to the calibration instrument host, so that the calibration instrument host reversely charges the operation terminal according to the charging instruction. According to the invention, the operation terminal and the calibration instrument host are mutually charged, and the power supply party and the power receiving party are automatically determined, so that the process calibration instrument has longer working time.