66 results about "Scratch test" patented technology

According to the fine fracturing geological modeling method based on the scratch test provided by the embodiment of the invention, the scratch test data representing the mechanical characteristics of a rock core sample material are accurately obtained by carrying out the scratch test on the rock core sample, the mechanical data are calculated and generated according to the scratch test data, and the wavelet transform is carried out on the mechanical data to obtain the fine fracturing geological modeling result. Compared with the prior art, the method has the advantages that the mechanical parameters of the reservoir rock are accurately obtained through scratch testing, the mechanical characteristics of the rock are represented, the mechanical characteristic model is optimized, and design data with higher accuracy is provided for a geological model.

The present application relates to precision machining technical field, especially for the critical depth prediction method of ultrasonic ELID compound grinding considering on-line electrolysis, including the following steps: S1: according to the process that single abrasive grain of grinding wheel in ultrasonic ELID compound grinding is exposed to the increasing radius of falling off, change curve is established, and single abrasive grain radius change model in ultrasonic ELID compound grinding is established;S2: selecting diamond abrasive grain of any radius on the above curve carries out ultrasonic ELID variable depth scratch test, and the brittle plastic transition critical depth of material is obtained;S3: repeating S2, using different radius abrasive grain carries out test, and the change curve of brittle plastic transition critical depth with the radius of abrasive grain is established and formula is fitted;S4: the model in S1, S3 and relationship are integrated, and the critical depth prediction model is established.The present application finally obtains the critical depth prediction method of ultrasonic ELID compound grinding considering on-line electrolysis, can adjust the grinding depth in grinding in real time, realizes the ductile region grinding of maximum depth of cut.

This invention provides a test specimen and a method for testing the performance of a cutting tool coating. The specimen includes a specimen substrate and a coating covering the surface of the substrate. The surface of the specimen includes an outer peripheral surface, a first plane, and a second plane. The outer peripheral surface and the second plane intersect to form an edge. The edge is used for brushing tests, and the first plane is used for scratch or indentation tests. The method for testing the performance of the cutting tool coating includes performing an indentation or scratch test on the first plane and a brushing test on the edge. The specimen of this invention can be applied to various tests, and multiple tests can be performed on the same specimen, thereby reducing the number of specimens required in the research of cutting tools, thus saving testing costs and improving testing efficiency.

The invention provides a gradient layer mechanical property evaluation method of a nano material. The method specifically comprises the following steps: (1) preparing a sample for gradient layer mechanical property evaluation; (2) performing a scratch test along the gradient direction of the depth layer of the sample to obtain scratch parameters at different positions in the gradient direction; and (3) determining the change of the mechanical property of the gradient layer along the gradient direction based on the scratch parameters at different positions in the gradient direction. The scratch test causes little damage to the material, and especially in a low-load mode, the near-surface performance of the material can be reflected more truly; and a single test is generally completed within several minutes, so that the test efficiency is greatly improved, and the research and development screening speed is increased.

A scratch resistance testing device for decorative panels relates to the field of PET film-faced artificial board testing technology. It includes a test platform, a sliding mounting frame on the base, and a partitioned pressure testing component within its groove. This component includes a movable seat, a pressure testing frame, a support rod, a support plate, and a scratching head. It works in conjunction with a pressure-dividing return assembly to achieve segmented pressure scratching. A telescopic scraping component is installed in the bottom through-hole of the lower empty-stroke scraping component for chip removal, and a negative pressure impurity removal component is also provided. The scheme includes three pressure blocks that cooperate with the pressure testing frame, allowing the scratching head to automatically complete three segments of scratches with different pressures during continuous movement. Blank intervals are left between segments to avoid interference, enabling multiple tests per scratch and segmented comparison. Multiple elastic telescopic scraping heads remove debris, fibers, and dust adhering to the scratching head in the blank areas. Simultaneously, an elastic pull rope and piston drive a negative pressure cylinder to precisely extract residue from within the scratch, avoiding obscuring the true morphology. This ensures the efficiency, consistency, and accuracy of the scratch resistance testing of PET film-faced artificial boards.

The invention discloses a prism film scratch testing device and a prism film scratch testing method, and belongs to the field of prism film testing. The device comprises a positioning rod fixedly arranged on the surface of a machine body, the positioning rod and a clamping rod are symmetrically arranged relative to a steel belt, two positioning blocks sliding oppositely are arranged on the surface of the positioning rod, arc-shaped blocks are fixed to the surfaces of the positioning blocks, and the arc-shaped blocks can make contact with the ends of media on the two sides of a prism film to guide the media to move to specific positions. Limiting rods with clamping assemblies are arranged on the surfaces of the two positioning blocks, horizontal scales are arranged on the surfaces of the limiting rods, it can be guaranteed that the edges of the positioning blocks are parallel to the edge of the steel belt according to the horizontal scales, and meanwhile standard rods are arranged on the surfaces of the limiting rods and the surfaces of the clamping rods. The limiting rod and the clamping rod can clamp the prism film, the placing state of the prism film can be visually known through the standard rod, and the relative position of the steel belt and the prism film can be rapidly judged; and energy and time required by a prism film and a medium placement stage are reduced.

The present invention discloses a system and method for testing the film strength of a coated lens, relating to the technical field of coated lens strength detection. The system and method comprise a fixing component for clamping the coated lens, wherein the fixing component automatically replaces the coated lens to realize automated operation. An adjusting component is provided on the fixing component, and the adjusting component is used to adjust the position of a scraping component to increase the scraping range of the scraping component on the coated lens. The scraping component is mounted on the adjusting component, and a plurality of groups of scraping heads are provided on the scraping component, and the distance between the plurality of groups of scraping heads can be automatically adjusted. The present invention automatically performs a scratch test on the coated lens, and by adjusting the distance between the scraping heads, different scratching conditions are simulated, thereby providing more test parameters and improving detection accuracy.

The present application belongs to the technical field of coating scratch test, and particularly relates to a non-planar scratch damage test device, which comprises a mounting frame, a bearing groove, a bearing frame, a lifting frame, a discharging block and an intercepting piece installed on the mounting frame, the bearing groove is obliquely arranged, the bearing frame is located at one end of the bearing groove, the lifting frame is vertically slidably installed on the mounting frame and located above the bearing frame, a lifting mechanism is installed between the mounting frame and the lifting frame, a rotating mechanism is installed on the lifting frame, a test needle for abutting the cylindrical measured piece with a certain pressure is installed on the lifting frame, the discharging block is movably installed on the mounting frame and used for pushing the cylindrical measured piece after the test is completed to fall from the bearing frame, and the intercepting piece is movably installed on the bearing frame and used for avoiding the new cylindrical measured piece from sliding off the bearing frame due to the motion inertia after the new cylindrical measured piece slides onto the bearing frame. The purpose is to solve the problem of low test efficiency caused by the structural defects of the existing test device.

To provide a decorative sheet and a decorative member having texture close to texture of a surface of wood or stone used in a housing material and having excellent designability.SOLUTION: A decorative sheet 1 comprises: a pattern layer 3, a transparent thermoplastic resin layer 4 and a surface protective layer 5 laminated in order on one surface of a colored thermoplastic resin layer 2; a gloss-matte expression pattern portion 6 laminated on the other surface of the colored thermoplastic resin layer 2, arranged in sync with the pattern of the pattern layer 3, and made of a material that has light absorption properties with respect to light of a predetermined wavelength; and an embossed portion 5a formed in the portion of the surface protective layer 5 overlapping the gloss-matte expression pattern portion 6 in a plan view. The surface of the surface protective layer 5, including the embossed portion 5a, has a load of 1000 g or more at which scratches occur during the Hoffmann scratch test and a load of 2 kg or more at which scratches occur during the coin scratch test, and a hardness of 2B or more in the pencil hardness test according to JIS K 5600.SELECTED DRAWING: Figure 1

The utility model discloses a scratch testing machine beneficial for adjusting the position of a scriber, and relates to the technical field of scratch testing machines, the scratch testing machine comprises an instrument main body, a touch screen, a fixed seat, a U-shaped sliding seat, a supporting seat, a connecting plate and a scriber main body, the front part of the instrument main body is provided with the touch screen, and the top of the instrument main body is provided with the fixed seat. According to the scratch testing machine facilitating adjustment of the position of the scriber, when an insertion plate moves, a rubber block can be driven to move, when the insertion plate is inserted into two sets of clamping grooves, the rubber block can generate extrusion deformation, so that the insertion plate is fixed between a movable block and a connecting block, and due to the fact that a rubber pad is soft and has certain buffering performance, the insertion plate is not prone to deformation; through the arrangement of the rubber pad, when the rubber pad extrudes the surface of a to-be-tested material, the material with the soft surface is not prone to being damaged, the thin material can be fixed through the rubber pad, meanwhile, the material is not prone to being damaged, and the test result is not prone to being affected.

The utility model discloses a washable water silk ribbon wear resistance detection device which comprises a detection table, silk ribbon fixing mechanisms are installed on the two sides of the top of the detection table, a supporting frame is arranged between the two silk ribbon fixing mechanisms, an electric sliding rail is installed between the supporting frame and the detection table, and a driving piece is fixedly installed on the top of the supporting frame. The output end of the driving part penetrates through the supporting frame and is connected with a detection mechanism, the detection mechanism comprises an installation plate, a friction detection assembly and a scratch detection assembly, the friction detection assembly and the scratch detection assembly are installed on the two sides of the bottom of the installation plate, and a switching assembly is arranged between the friction detection assembly and the scratch detection assembly. The switching assembly is used for switching the friction detection assembly and the scratch detection assembly to be in contact with the washable water silk ribbon, so that the friction test and the scratch test of the washable water silk ribbon can be realized, the friction test and the scratch test are completed on one device, and the wear resistance detection efficiency is improved.

The utility model provides an anti-scratch test device for a glass safety film, which comprises a first limit cylinder and a second limit cylinder, a first cavity is arranged in the first limit cylinder, a second cavity is arranged in the second limit cylinder, one end of the first limit cylinder close to the second limit cylinder is provided with a limit boss, and the limit boss is a spherical cambered surface. A testing groove is formed in the end, close to the first limiting cylinder, of the second limiting cylinder, a first platform is slidably connected into the first cavity, the first platform is made of iron-cobalt-nickel alloy, a driving assembly is fixedly arranged on the first platform, a third open groove is formed in the first platform, and a scratching assembly is slidably connected to the third open groove. According to the scheme, the driving assembly capable of driving the scratching assembly to slide back and forth is arranged on the first platform, and the height of the first platform is adjusted through the electromagnet so as to adjust the scratching force of the scratching assembly on the glass safety film, so that the testing force of the glass safety film can be changed; therefore, the purposes of increasing the test interval and improving the test efficiency are achieved.

The invention relates to the field of film adhesive force measurement, in particular to an adhesive force measurement method and system for an OSP organic solderability preservative film, and the method comprises the steps: detecting the surface of the OSP organic solderability preservative film to be measured by using an electron microscope SEM for preliminary evaluation; independently sampling the to-be-measured OSP organic solderability preservative which passes the preliminary evaluation to obtain an OSP organic solderability preservative sample group; respectively selecting one sample from the OSP organic solderability preservative sample group, and carrying out scratch test, thermal cycle test and tensile test; the critical load obtained by the scratch test, the film layer change condition obtained by the thermal cycle test and the adhesive force strength data obtained by the tensile test are systematically and comprehensively analyzed, and by constructing a mathematical model, various data are weighted and calculated to obtain an adhesive force measured value. According to the invention, the adhesive force of the OSP organic solderability preservative is evaluated through comprehensive dimensions, and the accuracy and reliability of the measurement of the adhesive force of the OSP organic solderability preservative are improved.

The utility model discloses a scratch-resistant testing device for a scratch-resistant decorative plate, and relates to the technical field of scratch-resistant testing of the scratch-resistant decorative plate. The device comprises a base, a working table, a driving seat, an L-shaped rod, a wheel disc and a U-shaped fixing piece, the working table is arranged above the base, the top of the working table is fixed to a top plate through a supporting piece, the lower end of the top plate is fixed to a supporting plate through an electric telescopic column, and a guide rod is fixed to the upper end of the supporting plate and penetrates to the upper end of the top plate; according to the utility model, the plurality of U-shaped fixing seats, the positioning bolts and the sliding blocks are matched with one another to fix the plurality of scratch test heads for testing the scratch resistance of the decorative plate, and the plurality of scratch test heads can be replaced by matching the wheel disc with the first spring cotters, namely the first spring cotters are pulled out, so that the scratch resistance of the decorative plate can be tested. At the moment, the pin head of the first spring bolt is separated from the positioning hole, and the scratch test head for detection can be quickly replaced by rotating the wheel disc.

A scratch resistance testing device for a scratch-resistant decorative plate relates to the technical field of decorative plate testing and comprises a sliding frame, a first motor is arranged above the sliding frame, a first gear is connected to a rotating shaft of the first motor, a fluted disc is arranged above the sliding frame and located on the side face of the first gear, the first gear is meshed with the fluted disc, and a driving block is arranged above the fluted disc; a guide seat is arranged on the sliding frame, a measuring rod assembly is arranged on the guide seat and comprises a supporting rod, the supporting rod is arranged on the guide seat in a sliding mode, the bottom of the supporting rod is a round head matched with the driving block, a sealing cover is spirally arranged on the top of the supporting rod, a sliding piece is arranged in an inner cavity of the sealing cover in a sliding mode, and a spring is connected between the supporting rod and the sliding piece. And the top of the sliding sheet is provided with a scratching knife for measuring the decorative plate. The ascending distance of the supporting rod is the height of the driving block, when the original distance between the decorative plate and the supporting rod is equal, the compression amount of the scratching cutter can be determined, and therefore the strength of the scratching cutter on the decorative plate can be determined.

The utility model belongs to the technical field of battery pack testing, and particularly discloses a battery pack rubbing test hanger which comprises a plurality of fixed beams, a plurality of movable beams and a plurality of connecting assemblies. A plurality of connecting devices are arranged on the movable beam; the movable beam is connected with the fixed beams through the connecting devices to form a frame; one moving beam is connected with at least one connecting assembly; the connecting assembly comprises a connecting frame and a first fastening clamp; and the first fastening clamp can adjust the tightness and is used for clamping the moving beam. The connecting frame is connected with the movable beam through the first fastening clamp, and when the position of the connecting frame needs to be adjusted, the first fastening clamp can be loosened to adjust the position of the connecting frame; when the connecting frame moves to a required position, the first fastening clamp is tightened so as to fix the connecting frame; therefore, the connecting holes in the hanging rack can correspond to the hanging holes in different types of batteries, so that the types of battery packs capable of being fixed by the hanging rack are increased, the test period of a scratch test is shortened, and the test cost of the scratch test is reduced.

The utility model discloses an artificial board scratch testing machine which comprises a machine body capable of being supported on the ground, and a position adjusting assembly capable of adjusting the scratch testing position is arranged on one side of the machine body and used for adjusting the scratch position of a tested material. One side of the position adjusting assembly is provided with a scratch testing assembly for carrying out scratch testing on the surface of the material; the machine body is further provided with a material placement assembly capable of placing a test material, the material placement assembly is rotationally connected with the upper wall of the machine body, and the scratch test assembly is used for carrying out scratch test on the material placed on the material placement assembly. The utility model belongs to the technical field of scratch testing machines, particularly relates to an artificial board scratch testing machine, and aims to at least solve the problem that alignment and leveling are difficult when the scratch testing machine performs a scratch test on an artificial board.

The present invention relates to the technical field of induction cooker microcrystalline glass detection, and specifically to a system for detecting the integrity of a multifunctional coating of an induction cooker microcrystalline glass, comprising a driving mechanism, a test bench, a bracket, a visual mechanism, a test seat and a processor. The table top of the test bench is provided with a projection screen. The bracket is installed on the top of the test bench, and the bracket is used to place the microcrystalline glass to be tested. The test seat is provided with a test tool, an air blowing hole and a light source. The air blowing hole is set toward the tip of the test tool, and the light source is set toward the rear of the test tool. The test seat is installed on the driving mechanism, so as to use the driving mechanism to control the test tool to perform a scratch test on the microcrystalline glass to be tested. The visual mechanism is used to obtain the projected image of the light source on the projection screen, and the processor is used to judge the integrity of the multifunctional coating of the microcrystalline glass to be tested based on the projected image. It can detect the integrity of the multifunctional coating of the induction cooker microcrystalline glass more accurately, and can complete the detection at the same time as the wear resistance test, which is efficient and convenient.

To provide a coating material suitable for food and drink cans, capable of forming a coating film having good abrasion resistance, processing adhesion and hardening property. [Solution] A can coating that satisfies (i) and (ii) in the following nano-scratch test. <Nano scratch test> The can paint was applied to the body of an aluminum can, baked at 180°C for 52 seconds and 200°C for 2 minutes, and the coating surface of the resulting sample was measured at 23°C using a nanoindenter. (i) the average coefficient of friction is 2 or less, and (ii) the maximum scratch size is 120 nm or less.

The invention discloses a scratch-resistant automotive rubber-coated PC / ABS soft skin composite material and a preparation method thereof. The scratch-resistant automotive rubber-coated PC / ABS soft skin composite material comprises the following raw materials in parts by weight: 10-30 parts of hydrogenated styrene elastomer; 10 to 30 parts of a semi-hydrogenated styrene elastomer; 20 to 50 parts of a polyurethane elastomer; 20-50 parts of a plasticizer; 2 to 20 parts of a maleic anhydride graft; 1-5 parts of a scratch resistant agent; and 0.5-5 parts of an anti-oxidation and anti-ultraviolet auxiliary agent. The scratch-resistant rubber-coated PC / ABS soft skin composite material for the vehicle is prepared by a twin-screw composite modification process, has excellent scratch resistance, small cross scratch color difference and unobvious fingernail scratch marks, and is superior to common elastomer materials in the market; according to the scratch-resistant rubber-coated PC / ABS soft skin composite material for the vehicle, the production process is double-color injection molding integral forming, compared with a traditional coating process, the production steps are greatly simplified, and the forming period is shortened to 40-80 s from original 5-20 min.

The utility model relates to the technical field of radar shell processing, in particular to a radar shell anti-scraping testing mechanism, which comprises a mounting frame, a scraping assembly and a placing assembly, the scraping assembly comprises a transfer disc and a driving motor, and a first chuck, a second chuck and a third chuck are uniformly and obliquely distributed on the bottom surface of the transfer disc; positioning balls are arranged on the transfer disc, the positioning balls are distributed between the bottom surface of the inclined shaft and the top surface of the transfer disc, a mounting groove is formed in the top surface of the transfer disc, a reset spring is arranged in the mounting groove, and a positioning groove is formed in the position, close to the mounting groove, of the bottom surface of the inclined shaft. When the positioning ball head moves into the next positioning groove, the compression spring resets, a part of the positioning ball head is pushed to protrude out of the mounting groove, and the protruding part enters the positioning groove, so that the positioning and fixing effects are achieved, the function of replacing scraping heads made of different materials is completed, and the rapid replacement function is provided.

The utility model relates to touch -sensitive screen function test technical field discloses a kind of touch -sensitive screen function piece function test device, including sliding scratch test mechanism, the sliding scratch test mechanism includes sliding motor, the output end of the sliding motor is fixedly connected with rotation gear one, the outside of rotation gear one is engaged with driven wheel, the outside rotation of the driven wheel is connected with rotating plate one, the outside of rotating plate one, i. e. the one end rotation of the driven wheel is rotationally connected with support rotating column in remote place.The utility model in, motor operation, drive rotation gear one rotation, drive driven wheel, so that rotating plate one rotates, guide sliding motor to stably slide outside sliding support block one, fine scratch block and wide scratch block can carry out scratchproof test on touch -sensitive screen surface, detect the wear resistance of touch -sensitive screen and the flexible brush on sliding brush can be synchronized to clean touch -sensitive screen surface, provide good condition for accurate evaluation touch -sensitive screen quality.

The utility model discloses a continuous CPED deposition coating testing device which is applied to the field of testing devices and comprises a testing box, and a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate are fixedly connected into the testing box. According to the utility model, the semiconductor chilling plate is arranged, the cold end and the hot end of the semiconductor chilling plate are utilized to generate cold energy and heat energy, and the interior of the heating bin and the interior of the refrigerating bin are lifted and lowered in a blowing mode of the air blowing assembly, so that the use of the coating in different temperature environments is simulated; the use of the coating in different humidity environments can be simulated by arranging the humidifying assembly, the connecting plate, the connecting rod, the supporting seat and the scratch cone are pulled to move by arranging the air cylinder, the scratch test of the coating can be realized by utilizing the scratch cone to scratch the coating, and the scratch test of the coating in three environments can be met at a time by different environments in different bins, so that the test efficiency can be improved, and the test cost can be reduced. And the authenticity and accuracy of the scratch resistance test can be improved under the simulation of different environments.

The invention discloses a method for testing the adhesive force of a tooth or tooth-like material interface and application. The method comprises the following steps: carrying out scratch test on a to-be-tested surface layer by using linear loading force in a specified range by adopting a micro-adhesion tester or an atomic force microscope; scratches are divided into three stages, in the first stage, linear loading force is used for detecting height changes in the whole process, in the second stage, scraping is slight and discontinuous, obvious furrows do not appear, in the third stage, obvious furrows appear, but the width of the furrows is narrow, and obvious base body scratches cannot be observed in the centers of the furrows; calculating a sudden change point load of the to-be-tested surface as an index for evaluating the adhesive force; the linear loading force in the specified range is the force from the minimum force for breaking the to-be-tested surface to the force for puncturing the to-be-tested surface without forming obvious scratches on the substrate. According to the method, the adhesive force of the in-vitro biological model can be tested, the comparability of different research data is ensured, a unified in-vitro test standard can be formulated, and a foundation is laid for promoting industry standardization.

This application discloses a method, apparatus, device, and storage medium for determining the critical load of a thin film. This application determines the total input energy load curve through a thin film scratch test. Based on the instantaneous normal load and total input energy in the initial stage of the scratch test, a baseline energy load curve for the entire stage is determined. Then, the failure energy load curve is determined using the energy balance method. This application performs first-order differentiation on the failure energy load curve and finds the peak value of the first-order derivative curve to determine the critical load of the thin film. This method eliminates the subjectivity of manual observation and the ambiguity of friction curves, greatly improving the repeatability of the results. Furthermore, this method eliminates the need to calculate cracking energy and peeling energy separately, avoiding the physical difficulties of directly calculating cracking energy and peeling energy. The peak value of the first-order derivative of the failure energy load curve more accurately corresponds to peeling in adhesion failure, thus the critical load can be accurately determined based on the peeling point.

This invention relates to a device and method for tilt correction in indentation scratch testing, belonging to the field of precision testing. The tilt correction device mainly consists of a stage (1), piezoelectric precision positioning units a (2-a), b (2-b), c (2-c), and a base plate (3). The piezoelectric precision positioning units a (2-a), b (2-b), and c (2-c) are completely identical. The correction method involves using an indentation scratch tester to apply a small load indentation to the three vertices of an isosceles right triangle, measuring the z-coordinates of the three points, and calculating the deflection angles of the sample around the x and y axes. Then, the tilt angle of the sample is corrected using the tilt correction device. The advantages of this invention are: it can accurately measure the tilt angle of the sample; the three sets of flexible mechanisms arranged in an equilateral triangle can reduce the size of the device; and the flexible mechanisms using a two-stage amplification can improve the correction range.

The present invention discloses a low-temperature storage device for hydrate samples with low moisture content and a usage method thereof, belonging to the field of basic physical property testing of hydrates and geotechnical engineering. The device includes a low-temperature storage module, a vacuum pumping module, a liquid nitrogen injection module, and a backpressure control module connected to the low-temperature storage module. Specifically, during use, through the combination of each module and the cooperative design of the first valve, piston, and control rod in the low-temperature storage module, low moisture content is carried during the low-temperature storage and transfer of hydrate samples, avoiding the interference of moisture on low-temperature nanoindentation and scratch tests, ensuring the stability of test conditions and the reliability of experimental results, providing an effective technical means for basic physical property testing of hydrates and geotechnical engineering, and having strong practicability.

The utility model discloses a kind of anti-module scratch test plug-in frame devices, it is related to plug-in frame module test technical field.The anti-module scratch test plug-in frame device includes plug-in frame side plate, plug-in frame backplate and plug-in frame bottom plate, the plug-in frame side plate is connected in the both sides of plug-in frame backplate, plug-in frame bottom plate is connected in the bottom of plug-in frame backplate and plug-in frame side plate, and the cavity is formed between plug-in frame side plate, plug-in frame backplate and plug-in frame bottom plate, the sidewall on the side of plug-in frame side plate close to cavity is equipped with scratch-proof epoxy side plate, roller is equipped in plug-in frame bottom plate, and the top wall of plug-in frame bottom plate is equipped with scratch-proof epoxy bottom plate.The utility model provides a kind of anti-module scratch test plug-in frame device, when traditional module test, the sliding friction generated between module bottom and plug-in frame bottom plate in the process of module plug is replaced by rolling friction, and the partition collaborative mode of roller and epoxy plate is used to realize scratch-proof function, and it also has the advantages of labor-saving operation, improve efficiency.

The utility model discloses a kitchenware coating scratch testing device which comprises a bottom plate, a lead screw, a lead screw nut, a lead screw bearing, an adjusting handle, a guide column, a supporting plate, a pressure regulating valve, a digital pressure gauge, a cross beam, a linear bearing, a fixing plate, a box type bearing, a guide rod, an air cylinder and a testing head, the lead screw bearing is fixed on the bottom plate, the lead screw is arranged in the lead screw bearing, the guide column is fixed on the bottom plate, and the supporting plate is fixed on the bottom plate. The lead screw is sleeved with the lead screw nut, the supporting plate is transversely connected with the guide column and the lead screw, the adjusting handle is arranged on the lead screw, the guide column is sleeved with the linear bearing, the cross beam is connected with the linear bearing and the lead screw nut, the fixing plate is arranged on the cross beam, the guide rod is transversely fixed to the fixing plate, the guide rod is sleeved with the box type bearing, and the air cylinder is fixed to the box type bearing. The testing head is arranged on a piston rod of the cylinder and moves up and down; the air cylinder is connected with a pressure regulating valve which is connected with a pressure gauge. According to the utility model, the scratch resistance of the coating is verified, and the scratch resistance grade of the coating can be verified by adjusting the force value of the pressure according to the quality grade.

The present invention provides a laminate containing a surface layer that exhibits excellent mattifying properties and yields good results in both needle scratch tests and fingernail scratch tests, as well as a surface coating composition capable of preparing such a surface layer. [Solution] The laminate of the present disclosure includes a substrate, and a surface layer having scratch resistance and matte finish, which contains resin beads having an average particle size of 1 micrometer or more and 20 micrometers or less, and a glass transition temperature greater than -30°C and less than 34°C, and a binder, wherein the surface layer contains less than 75% by mass of resin beads based on the total weight of the surface layer, and when the elastic modulus of the surface layer is measured with an atomic force microscope, the region of the surface layer other than the resin beads exhibits an elastic modulus of 65 MPa or less.