41 results about "Physical performance testing" patented technology

The invention discloses a steady-state method-based heat conductivity coefficient measurement device, and belongs to the technical field of physical performance tests of materials. The steady-state method-based heat conductivity coefficient measurement device comprises a main heater, an upper standard test piece, a lower standard test piece, a to-be-measured test piece holding cavity, a heat preservation layer, an upper shell, a lower shell, a heat insulation ring arranged between the upper shell and the lower shell, electric heating wires connected with a temperature compensation regulator, heating devices for thermocouple groups arranged in the upper standard test piece, the lower standard test piece and the heat preservation layer, a micro-channel cooling device, a temperature acquisition device, and a processing controller, and a pressurizing and fixing frame which consists of an upright post, a bottom plate, a lever and a weight, wherein the middle part of the lever is provided with a pressure rod. According to the steady-state method-based heat conductivity coefficient measurement device, an integrated heating device is used, meanwhile, the electric heating wires connected with the temperature compensation regulator are additionally arranged on the upper shell and the lower shell, and the main heater and the micro-channel cooling device are respectively arranged on the bottom and the top, so that the device has the characteristics that the measurement precision of a heat conductivity coefficient measurement is high, the consistency of repeated measurement and results is high, the stability is high, the measurement range is wide, the measurement can be performed under different heating conditions, and the like.

The invention relates to a sintering mold which comprises pressing heads, a mold body, a pressure bearing platform and gaskets. The mold body is provided with a plurality of cavities, the number and positions of the pressing heads correspond to those of the cavities, and the pressing heads are fixed to the first surface of a pressing plate. The mold body is placed on the pressure bearing platform, and the gaskets are placed on the pressure bearing platform and located in the cavities. According to the sintering mold provided by the invention, the mold is provided with the multiple cavities so that a large batch of samples can be synthesized and sintered with one-time hot pressing; meanwhile, since the sizes of the cavities are different, the temperatures in the cavities can be regulated and controlled, the temperatures in the cavities are different from one another, and the large batch of samples obtained at a time are completely different. In addition, the micro sample synthesized in each cavity can reach the microgram level, the diameters of the cavities are between 2 mm and 12.7 mm, and the sizes of synthetic materials are adequate for testing of various surface features and physical properties.

The invention discloses an agricultural material collision recovery coefficient test platform and belongs to physical property test devices. A mirror, a scale wall plate, a height adjusting rod, first and second electromagnetic valves, a support and a time-delay relay are arranged on a base, the mirror and the scale wall plate form a 135-degree included angle to be connected into a whole, the support is hinged to a collision wall plate through a pin shaft, angle adjusting screws A and B are arranged on two sides of the pin shaft on the support respectively, upper and lower supporting plates are disposed on the height adjusting rod, upper and lower adsorption tubes are installed on the upper and lower supporting plates respectively, an air-sucking pump is respectively communicated with the first and second electromagnetic valves through a connecting air tube, a high-speed camera is vertical to the scale wall plate, horizontal adjusting bolt groups are arranged at four corners of the base respectively, the platform can perform testing on collisions of agricultural materials in various forms and conditions and collisions among materials, the structure is novel and reasonable, the adaptive capacity is high, the application range is wide, the usage is reliable, and the test accuracy is high.

The invention discloses a preparation method of an aloe polysaccharide/bacterial cellulose composite membrane for a medical dressing. The preparation method comprises the following steps: activating a strain Acetobacter xylinum NUST4.2; preparing a seed solution of the strain Acetobacter xylinum NUST4.2; adding aloe polysaccharide with different concentrations into a fermentation culture medium of the strain Acetobacter xylinum NUST4.2 to carry out dynamic-static combined fermentation production, so as to obtain an aloe polysaccharide/bacterial cellulose composite membrane; purifying the aloe polysaccharide/bacterial cellulose composite membrane; respectively carrying out infrared characterization and scanning electron microscope observation on the structure and morphology of the aloe polysaccharide/bacterial cellulose composite membrane; and carrying out physical performance test on the aloe polysaccharide/bacterial cellulose composite membrane as a medical dressing, so as to show that the requirements of the medical dressing are met. By virtue of the preparation method, more choices are provided for the medical dressing for healing skin wounds, and meanwhile, a positive role for the development of the medical dressing is achieved.

The invention relates to antibacterial and antiviral melt-blown fabric and a preparation method thereof. The antibacterial and antiviral melt-blown fabric is prepared from the following raw materials in parts by weight of 100 parts of polypropylene particles with a melt index of 1500, 1-5 parts of electret master batch, 0.03-10 parts of an antibacterial and antiviral agent, 0.1-2 parts of a lubricant, 0.2-2 parts of a dispersing agent and 0.1-0.2 part of a heat stabilizer. The preparation method of the melt-blown fabric comprises the following steps of step (1) pretreatment of the antibacterial and antiviral agent, step (2) mixing of raw materials, step (3) melt-blowing, and step (4) physical performance testing. By adding the lubricant, the dispersing agent and the heat stabilizer, the antibacterial and antiviral agent is uniformly dispersed in polypropylene particles, so that the heat stability and dispersity of the antibacterial and antiviral agent are improved, and the antibacterial and antiviral agent is not decomposed in the processing and using process and has excellent antibacterial and antiviral effects and very high biological safety performance; and the method simplifies the operation process, reduces the production cost and is suitable for large-scale production.

The invention discloses a new energy automobile manufacturing chassis physical performance test system and test method and relates to the technical field of automobile production. The new energy automobile manufacturing chassis physical performance test system comprises a bottom support plate fixedly mounted on the ground, a side supporting rib plate vertically fixed to the top end of the bottom supporting plate is arranged at the top end of the bottom supporting plate, a horizontally-fixed top supporting plate is arranged at the top end of the side supporting rib plate, and a plurality of electric push rods fixed at equal intervals are installed at the top end of the top supporting plate. In the system, the side supporting rib plate vertically fixed to the top end of a bottom supporting plate is arranged at the top end of the bottom supporting plate fixedly installed on the ground. The plurality of electric push rods are supported upwards through the side support plates, and each loadbag is independently controlled through the plurality of electric push rods, so that the load test can be performed on any position of the automobile chassis when the load test is performed on the automobile chassis, and the physical test performance of the automobile chassis is improved.

The invention provides a wood gas permeability analysis and testing method and relates to the field of wood physical property testing. Positive-pressure gas is used as a driving source, and a decompression valve and a pressure regulation valve are arranged between a pressurizing air source and a wood test sample to be detected; driving pressure on a test sample up-flow high-pressure end is controlled. A wood test sample clamping device ensures the air tightness of a penetration testing process, and testing air flow completely passes through a section of the wood test sample; an air flow inlethigh-pressure end of the clamping device is fixed and a slidable member is arranged at an air flow outlet of a low-pressure end. A high-pressure end pressure meter is arranged at the high-pressure endof the wood test sample clamping device; when the permeability is determined, upstream pressure of the wood is displayed; the low-pressure end is communicated with atmosphere; two ends of the wood test sample to be detected have stable positive pressure difference so that the air flow flowing through the wood test sample flows stably. The flow of flowing-out gas is determined at the low-pressureend and a wood gas permeability measurement result is obtained according to a gas permeability calculation equation; the testing method is a stable-state positive-pressure-difference gas permeabilitytesting method and a testing process is simple and convenient.

The invention discloses a test device for testing the torque coefficient of a oversized high-strength bolt, and relates to the technical field of bolt physical performance testing. The test device iscomposed of the following modules: a test platform, a counter-force frame, a power loading device, a loading puller, a puller axial adjustment assembly, a counter-force frame axial adjustment assemblyand a control system. The counter-force frame provides supporting counter-force for the tested bolt, the loading puller is used for clamping the tested bolt and transmitting the supporting counter-force, the power loading device provides torsion power for the tested bolt, and the three modules are matched with the control system so that automatic testing of the torque coefficient of the bolt canbe quickly and accurately carried out. Through axial translation of the counter-force frame and the loading puller, the device can adapt to test requirements of different specifications of tested bolts, and has the advantages of wide application range and high universality.

A running shoe performance testing system classifies running shoes. The running shoes and subjects are classified according to the system for matching between the running shoes and the subjects; various sport dynamics properties are tested to extract original data, key data organization and standardization are performed to perform property judgement; various physical properties are tested, and test report key data organization and standardization are performed to perform property judgement; the overall various property test data of the running shoes are organized, and the various physical properties include shock buffering, stabilization, grounding, coating, buckling and resilience rebounding properties.

The invention discloses an analyzing and testing device for the gas permeability of wood, and relates to the field of physical property testing of wood. Positive pressure gas is taken as a driving source, and a pressure reducing valve and a pressure regulating valve are arranged between a pressurized gas source and a wood sample to be detected, so as to control driving pressure at a high pressureend at the upstream of the sample. A wood sample clamping device guarantees the gas tightness during permeation testing, ensures that tested gas flow completely passes a fracture surface of the wood sample, the gas flow inlet high pressure end of the clamping device is fixed, and a gas flow outlet in a low pressure end can serve as a sliding component. A high pressure end pressure gage is mountedat the high pressure end of the wood sample clamping device, and displays the pressure at the upstream of wood during permeability testing, the low pressure end is communicated with the atmosphere, and stable positive pressure difference is formed between the two ends of the wood sample to be detected, so that gas flow flowing through the wood sample flows under a stable state. The low pressure end measures the flow of eluting gas, and a wood gas permeability measured result is obtained according to a gas permeability calculation equation. The device belongs to a stable state positive pressuredifference wood gas permeability testing device, and the testing process is simple and convenient.

The invention discloses a building curtain wall renovation and assessment method and system. The method comprises comprise the steps of testing the physical performance of objects under test, and obtaining corresponding performance test data, the objects under test consisting of a structural adhesive, a steel structure, an embedded part and a curtain wall panel; processing the performance test data; conducting full-wave data comparison between the processed performance test data and pre-stored standard values, obtaining final test results and storing the test results; and analyzing the stored test results and generating corresponding response and control information. According to the invention, the performance test of the embedded part, the structural adhesive, the steel structure and the curtain wall panel of a building curtain wall constitutes a whole, and a scientific, convenient and easy renovation and assessment method is obtained by testing the performance, service life and fatigue of different materials with the combination of analysis of an automatic control and data processing system.

The invention provides a comprehensive physical training device for physical performance testing, relates to the technical field of physical training, and solves the following problems that in the practical application process of an existing training device, a bar body of a horizontal bar is inevitable to wear along with time when being used, and the existing horizontal bar is integrally welded, when the bar body is damaged, great potential safety hazards exist, and in addition, the training effect is poor because load-bearing training cannot be carried out. The device comprises bearing mechanisms, and the number of the bearing mechanisms is two. According to the training device, limiting hook frames can be used as a common horizontal bar in a normal state, and when a user needs parallel bar training, the two sets of limiting hook frames and a base can be rotated and unfolded; after being unfolded, the bar body is inserted into the limiting hook frames through square blocks installed on the left side face and the right side face of the bar body and fixed through bolts, and then the bar body can be used, so that the purpose of more conveniently training a user is achieved.

The invention discloses a method for configuring modules in a laboratory of an electrolytic aluminum plant. In the method, the experiment function is divided into four modules according to the daily experiment characteristics and the modules are configured in different areas of the laboratory according to the relationships among the modules and the working convenience. The laboratory of the invention rationally has an instrument element analytical unit, a chemical analytical unit, a physical performance test unit with complicated or simple contents and a sample preparation unit for more or less adapted objects and can supply in-place and high-efficiency services to the electrolytic aluminum plant flexibly, quickly and completely. The four functional modules are rationally configured in the laboratory of the electrolytic aluminum plant; the functional modules are rationally and compactly arranged for convenient operation and cooperation; and the working environment is safe, clean, tidy and beautiful.

A nonlinear optical crystal calcium strontium pyroniobate [CaSrNb ₂ o ₇ ] and a preparation method thereof relate to the field of artificial crystals. The crystal belongs to the orthorhombic crystal system, and the space group is Cmc2 ₁ , melting with the same composition, the melting point is 1450-1500°C, and the crystals with high optical quality and large size can be grown by the pulling method, and its second-order nonlinear optical coefficient is equivalent to 3-4 times KDP, which can realize visible and near-mid-infrared bands Phase matching. Physical performance tests show that the crystal has high transmittance in the visible and near-middle infrared bands, and has good various physical, chemical, thermal and mechanical properties. The crystal is a new nonlinear optical crystal suitable for visible and near-mid-infrared bands, and is expected to be practically applied.

The invention relates to a flexible touch screen production and manufacturing physical performance testing method, belongs to the technical field of display screen test equipment, and particularly relates to flexible touch screen production and manufacturing physical performance testing equipment, which comprises a fixer used for fixing a flexible touch screen and fixing the specific position of the flexible touch screen at a specific angle, clamping driving pieces connected with the fixer, symmetrically clamped on the flexible touch screen and used for driving the flexible touch screen to deform and bend, and a connecting fixing piece connected with the fixer and the clamping driving piece and capable of synchronously moving with the clamping driving piece. The method has the advantages of being easy to operate, low in investment cost and capable of testing the multiple sets of flexible touch screens at the same time.

The invention relates to a sampling system and in particular relates to a bulk material sampling and sample preparation system. The invention provides an automatic bulk material sampling and sample preparation system which is used for preparing a chemical analysis sample, a physical performance sample, a metallurgy performance sample and the like online through bulk materials, and can realize functions including online granularity distribution determination, sample moisture detection, physical performance testing and the like; the bulk material sampling and sample preparation system comprisesa sample preparation device and a mechanical arm; a granularity composition analysis device, a moisture measurement device, an analysis sample preparation device, a sample storage device and a washingdevice are arranged around the mechanical arm; the bulk material sampling and sample preparation system further comprises a control system; the sample preparation device, the mechanical arm, the granularity composition analysis device, the moisture measurement device, the analysis sample preparation device, the sample storage device and the washing device are connected with the control system; the mechanical arm is controlled by the control system to convey the bulk materials to each device in sequence and a full-automatic sample preparation system is applicable to industries including an iron and steel metallurgy industry, an ore terminal industry, an electric industry, an exploration industry and the like.

The invention belongs to the field of automobile protection, and relates to an automobile rear armor physical performance testing device. The device comprises a testing box, a control device and a hydraulic rod; the outer surface of the testing box is rotationally connected with a door body; the control device is fixed to the upper surface of the testing box through bolts; a sliding groove is formed in the outer surface of the testing box; and the hydraulic rod is fixed in the testing box through bolts. According to the automobile rear armor physical performance testing device, through a torsion spring, a lifting block and the movement of a driving block, the lifting block can drive a rotating rod to rotate in a fixed rod under the blocking of an armor body, so that the torsion spring is subjected to compression deformation; and when the lifting block moves to the lower part of the armor body, under the action of deformation recovery of the torsion spring, the lifting block can be reset to the initial position, so that when the driving block ascends, the lifting block can automatically pull the armor body upwards, the whole device can automatically lift the armor body, and a worker can conveniently take the armor body.

The invention discloses a non-linear optical crystal potassium borate-niobate and making method and application in the artificial crystal domain, which is characterized by the following: adopting K2MoO4-LiF as flux; growing KNbB2O6 crystal in the 1150-100 deg. c interval through top seeding method of fusing salt with cooling velocity at 1-5deg. c/d and rotary speed of crystal at 5-35rpm; improving the physical, chemical and mechanic property for frequency laser crystal of visible and near infrared band.

The invention discloses a strength and reliability test device and method for a longitudinal roller guide rail mechanism and belongs to the field of physical performance testing. The test device can complete the test of the real stress and operation condition of the roller guide rail mechanism in a laboratory; whether the roller guide rail mechanism meets use requirements is found in advance; serious consequences caused by failure after installation are avoided; the device comprises a frame, a simulation platform and hydraulic cylinders, wherein the simulation platform is connected with the top of the frame through hydraulic cylinders, the hydraulic cylinders can drive the simulation platform to reciprocate in the frame, a roller guide rail mechanism is connected between the frame and thesimulation platform, a distance detector is further arranged between the frame and the simulation platform, a force sensor is arranged between the roller and the simulation platform, and the distancedetector and the force sensor are both connected with a controller.

The invention discloses a preparation method for a castable camouflage mixed-color foamed polyurethane shoe sole. Polyurethane resin comprises an A component, a B component and a C component, whereinthe A component is a polyester or polyether polyol mixture, the B component is an isocyanate prepolymer, and the C component is a catalyst. The camouflage mixed-color polyurethane shoe sole raw liquidprovided by the invention is suitable for industrial production and easy to process; and the product prepared by the method has better wear resistance and anti-slip function effects through physicalproperty tests of an authoritative footwear detecting mechanism, and results indicate that the product can be completely used for preparing the shoe outsole.