CN109060604A - For characterizing the tester and test method of material surface self-cleaning property - Google Patents
For characterizing the tester and test method of material surface self-cleaning property Download PDFInfo
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- CN109060604A CN109060604A CN201810986839.5A CN201810986839A CN109060604A CN 109060604 A CN109060604 A CN 109060604A CN 201810986839 A CN201810986839 A CN 201810986839A CN 109060604 A CN109060604 A CN 109060604A
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- 239000000463 material Substances 0.000 title claims abstract description 230
- 238000004140 cleaning Methods 0.000 title claims abstract description 70
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 23
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 16
- 230000007423 decrease Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 27
- 239000011538 cleaning material Substances 0.000 abstract description 17
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000012153 distilled water Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000012512 characterization method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
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- 238000009434 installation Methods 0.000 description 5
- 239000002352 surface water Substances 0.000 description 5
- 238000004445 quantitative analysis Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
- G01N2013/0241—Investigating surface tension of liquids bubble, pendant drop, sessile drop methods
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of for characterizing the tester and test method of material surface self-cleaning property, based on material surface to the absorption property of liquid, detected materials are tensioned using first tensioning mechanism and the second strainer, and control the rotation of detected materials, contact squeeze with separate, adhere to quantity by test single detected materials surface drop, pulling force between size and two detected materials, it can realize the analysis to material surface self-cleaning property, and then facilitates those skilled in the art and various self-cleaning material performances are compared, convenient for selecting suitable self-cleaning material according to demand；Also contribute to expanding self-cleaning material simultaneously in the use scope of each field (such as life household, biological medicine, clinical medicine).
Description
Technical field
The invention belongs to self-cleaning material studying technological domain, be related to it is a kind of based on material surface to liquid (such as water,
Oil etc.) absorption property, to material surface self-cleaning property quantization measuring technology, and in particular to a kind of pair of material surface self-cleaning
It can be carried out the measuring technology of characterization.
Background technique
Self-cleaning material refers to that the pollutant of material surface or dust are naturally outer in gravity, rainwater, wind-force or solar energy etc.
It being capable of Automatic-falling or a kind of functional material for being degraded under the action of power.Self-cleaning material can maintain under field conditions (factors)
The cleaning on surface, without deliberately cleaning, it will be able to keep material surface brighting for example new, greatly reduce cleaning cost, and reduce
The threat of high altitude operation team cleaning worker life security.The self-cleaning material of Recent study is gradually applied to coating work
The multiple fields such as industry, building materials, pipeline, vehicular traffic, electronic equipment, textile.
Although self-cleaning material has many-sided advantage, for the self-cleaning ability of self-cleaning material, correlation is quantitative
Analysis method research is less, to limit selection of the people to self-cleaning material.
The application documents that number of patent application is CN200710008521.1 disclose a kind of the online of self clean glass contact angle
Measurement method determines material by measurement contact angle using the size of contact angle as the standard for judging material surface self-cleaning ability
Whether material is self-cleaning material, but the measurement process of contact angle is needed through over sampling, print pre-processing, illumination, cooling, tune
Multiple operations such as whole contact angle test system, adjustment humidity and temperature, measurement contact angle, measurement process is very complicated, and time-consuming,
And precision is easy tested person ambient humidity and temperature and influences.
Therefore, it researches and develops a kind of for characterizing the tester of material surface self-cleaning property, there is people to material self-cleaning ability
More intuitively, clearly understand, thus, practicability more targeted to the selection of self-cleaning material.
Summary of the invention
It is an object of the invention to be directed to the above-mentioned technology for lacking material surface self-cleaning property characterization apparatus in the prior art
Status is provided a kind of for characterizing material surface certainly based on material surface for the absorption property of liquid (Ru Shui, oil etc.)
The tester of clean performance can be realized the quantitative analysis to material surface self-cleaning property, and adsorption capacity is weaker, illustrates material
Self-cleaning ability is stronger.
In order to achieve the above object, the present invention takes following technical scheme to realize.
Provided by the present invention for characterizing the tester of material surface self-cleaning property, including pedestal and install on the base
First tensioning mechanism, the second strainer, camera shooting mechanism and protective cover, first tensioning mechanism and the second strainer are respectively used to
It is tensioned one piece of detected materials；
The first tensioning mechanism includes the force snesor being installed on pedestal and first be mounted on force snesor
Support frame frame, the first braced frame are provided with the first supporting surface for carrying one piece of detected materials；
Second strainer includes the lifting support being installed on pedestal, the second braced frame and rotating electric machine；Institute
It states rotating electric machine to be installed on lifting support, and is moved up and down along the vertical direction under the driving of lifting support；Described second
Support frame frame is fixed on the output revolving shaft of rotating electric machine；Second braced frame is provided with for carrying another piece of detected materials
The second supporting surface；Second supporting surface is located at the top of the first supporting surface；
The video camera that the camera shooting mechanism includes the bracket being installed on pedestal and is installed on bracket；The position for video camera
In the top of the second supporting surface, and the overlapping region of its image pickup scope covering the first supporting surface and the second supporting surface；
The protective cover is used to for two detected materials being isolated, and is placed between the first supporting surface and the second supporting surface.
It is above-mentioned for characterizing the tester of material surface self-cleaning property, for detected materials be for test liquid object
The completely non-absorbent material of matter fixes two pieces of detected materials using first tensioning mechanism, the second strainer, is based on material surface
For the absorption property of liquid, liquid is dripped in the detected materials for being fixed on the second strainer until satiety
With drive detected materials rotation to get rid of the liquid beyond detected materials maximal absorptive capacity by rotating electric machine and fall, and by taking the photograph
Camera acquires detected materials surface droplet distribution situation, provides corresponding data for judgement material self-cleaning property；Further, by
Detected materials are contacted with the lower surface of liquid with the upper surface of detected materials in first tensioning mechanism on two strainers
And it squeezes, and using the maximum pull in two detected materials separation process of force sensor measuring.Last image according to acquisition and
Data analyze the self-cleaning property of detected materials.
It is above-mentioned for characterizing the tester of material surface self-cleaning property, in order to fix detected materials, heretofore described the
One braced frame is by more support bar groups at wherein at least three support rods, which are sequentially connected with, constitutes the first supporting surface, remaining support
Bar is fixed between the first supporting surface and force snesor, for the first braced frame to be integrally fastened to force snesor.In order to
Simplify the first support frame structure, in a preferred embodiment, the first supporting surface is to be sequentially connected with to constitute by four support rods
Rectangular configuration.
The above-mentioned tester for being used to characterize material surface self-cleaning property, the effect of heretofore described lifting support are to drive
Detected materials on second supporting surface slowly move down, until contacting with the detected materials on the first supporting surface, and keep squeezing
Pressure condition for a period of time after, then the detected materials on the second supporting surface is driven slowly to move up, separates two detected materials.For
It can ensure the maximum pull in two detected materials separation process of precise measurement, the ramp rate of lifting support cannot be too big,
It is usually no more than 1mm/s.The specific implementation of heretofore described lifting support are as follows: be arranged on rack body and be slidably matched
Sliding rail and sliding block, sliding block drives by driving mechanism and moved along sliding rail, and it is powered by conventional energy that driving mechanism is that this field has disclosed
Source, such as stepper motor or electric cylinder etc..Rotating electric machine is fixed on sliding block.In order to preferably fix detected materials, lifting branch
Frame preferred amount is two, and two lifting supports are oppositely arranged, and the opposite both ends of the second braced frame are respectively fixedly connected in being mounted on
On rotating electric machine output revolving shaft on two lifting supports.Further, in order to fix detected materials, heretofore described second
Braced frame is by more support bar groups at wherein at least three support rods, which are sequentially connected with, constitutes the second supporting surface, remaining support rod
It is fixed between the second supporting surface and rotating electric machine output revolving shaft；When lifting support is two, and is oppositely arranged, remaining support
Bar is divided into two parts, is individually fixed between the second supporting surface both ends and corresponding rotating electric machine output revolving shaft.In order to simplify
One support frame structure, in a preferred embodiment, the first supporting surface are to be sequentially connected with the rectangle constituted by four support rods
Structure.
The above-mentioned tester for being used to characterize material surface self-cleaning property, the effect of rotating electric machine are to drive the second braced frame
It is slowly rotated with the detected materials being fixed thereon, to control detected materials surface liquid content.In order to stablize
Two braced frames and the detected materials being fixed thereon, need the torsion of rotating electric machine sufficiently large, and those skilled in the art can be with
According to the second support frame structure and material, suitable rotating electric machine is selected.
The above-mentioned tester for being used to characterize material surface self-cleaning property, first supporting surface and the second supporting surface are opposite
Both ends are separately provided for clamping the clip of detected materials.The setting of first braced frame, the second braced frame and clip is
In order to preferably fix two pieces of detected materials, and in detected materials clean surfaces performance test process, need to guarantee first
Support frame frame, the second braced frame and clip are firm, do not relatively move.
The above-mentioned tester for being used to characterize material surface self-cleaning property can be realized by manual operation, can also be passed through
Automation control is realized；When by automation control to realize, which further comprises being set to side of base
Operation panel and the controller for being set to base interior；The controller respectively with operation panel, force snesor, rotating electric machine,
The driving mechanism and camera shooting mechatronics of lifting support.Single-chip microcontroller, programmable logic controller (PLC) can be used (i.e. in the controller
PLC controller) or with above-mentioned functionally similar other type controllers.The operation panel include respectively with controller
Display screen, input keyboard, indicator light and the power key of electrical connection.Wherein, display screen is acquired for real-time display video camera
Image, force snesor acquisition pulling force data and assist user input data, read data etc.；Input keyboard is for assisting
User carries out to device input (such as the revolving speed of rotating electric machine, the ramp rate of lifting support, the video camera of data and instruction
Focusing etc.)；Indicator light is used to guide each test operation of user's switch test instrument；Power key is for opening and closing test
Instrument.
The tester for marking material clean surfaces performance, further comprises the fence being circumferentially arranged along pedestal；
The height of the fence is higher than the first supporting surface；Protective cover peace is provided on the fence with region corresponding to the first supporting surface
It decorates, protective cover is removably mounted on fence.In rotating electric machine rotary course, in order to avoid being fixed on the second supporting surface
Detected materials surface drop falls on the detected materials surface being fixed on the first supporting surface, and protective cover is placed in the first support at this time
Between face and the second supporting surface, two detected materials are isolated.
Invention further provides a kind of for characterizing the test method of material surface self-cleaning property, utilizes the test
Instrument follows the steps below:
(1) two pieces of detected materials are individually fixed on the first supporting surface and the second supporting surface, and cover with protective cover
Detected materials on one supporting surface；
Liquid is added dropwise until being paved with detected materials surface in detected materials on (2) second supporting surfaces；
(3) rotating electric machine is controlled, makes the second braced frame that the detected materials on the second supporting surface be driven to rotate at least 720 °,
After stopping rotating, the detected materials status image on the second supporting surface is obtained using video camera；
(4) rotating electric machine is controlled, the face for making the second braced frame that the detected materials on the second supporting surface be driven to have drop
Detected materials on towards the first supporting surface, and remove protective cover；
(5) lifting support is controlled, makes the second braced frame that detected materials on the second supporting surface be driven to be moved downward to and the
Detected materials on one supporting surface contact, and generate and sufficiently squeeze, and pressure controls under lifting support stopping after reaching at least 15N
Drop, keeps squeezing at least 20s, controls lifting support later and rises, while recording pulling force size that force snesor obtains until two
Block detected materials are kept completely separate, and obtain the pulling force maximum value before pulling force is mutated in numerical value i.e. two piece detected materials separation process；
(6) self-cleaning of the pulling force maximum value that the status image and step (6) acquired by step (3) obtains to detected materials
It can be carried out analysis.
The above-mentioned test method for being used to characterize material surface self-cleaning property is needed to clean detected materials before test, be dried,
With guarantee detected materials surface it is clean, it is dustless, without spot etc.；Need to prepare enough liquids simultaneously, the in test process
Detected materials on two supporting surfaces are added dropwise oversaturated liquid and (are paved with liquid, what preferably arrival will overflow faces
Boundary's point be more than in other words detected materials adsorbable liquid maximum value), driven later by rotating electric machine output revolving shaft
Second braced frame slowly rotates, and makes it in overturning, and detected materials surface is more than that its adsorbable liquid of institute is got rid of as far as possible
It falls, the amount for the liquid that detected materials surface is finally adsorbed is its adsorbable maximum value of institute.By taking the photograph after stopping rotating
Camera acquires the detected materials status image on the second supporting surface at this time, and analysis obtains its surface amount of droplets, size and distribution
Situation.Lifting support is controlled, so that the detected materials with drop contacted, squeeze and is separated with another piece of detected materials, utilizes power
Sensor obtains the pulling force maximum value in two pieces of detected materials separation processes.By detected materials surface on above-mentioned second supporting surface
Pulling force maximum value in amount of droplets, size and distribution situation and two pieces of detected materials separation processes, can be to detected materials
Self-cleaning property carries out overall merit, provides selection gist to the selection of self-cleaning material for people.If to be measured on the second supporting surface
The amount of droplets of material surface is more and larger, and the pulling force in two pieces of detected materials separation processes is larger, can illustrate to be measured
The self-cleaning ability of material is poor.
Compared with prior art, the invention has the following advantages:
(1) provided by the present invention for the tester and test method of characterization material surface self-cleaning property, it is based on material table
In face of the absorption property of liquid (Ru Shui, oil etc.), detected materials are tensioned using first tensioning mechanism and the second strainer,
And control the rotation of detected materials, contact squeeze and separate, quantity, size are adhered to by measurement single detected materials surface drop
And two pulling force between detected materials, it can realize the analysis to material surface self-cleaning property, and then facilitate art technology
Personnel are compared various self-cleaning material performances, convenient for selecting suitable self-cleaning material according to demand；Also have simultaneously
Help expand self-cleaning material in the use scope of each field (such as life household, biological medicine, clinical medicine)；
(2) provided by the present invention for the tester of characterization material surface self-cleaning property, structure is simple and convenient to operate, at
This is low, is easy to make processing, has the extensive market demand and application prospect, is suitable for promoting the use of in the art；
(3) provided by the present invention for the test method of characterization material surface self-cleaning property, test environment is not wanted
It asks, detected materials is not needed to carry out complicated pretreatment yet；In test, is placed in addition to sample and need manpower to grasp with step switching
To make, remaining process can all be completed by machine automatization, and operating process has obtained great simplification, while reducing operation difficulty, and
Test period is shorter (less than 10min), testing efficiency with higher；
(4) provided by the present invention for characterize material surface self-cleaning property test method, through research two detected materials it
Between separation pulling force and material surface there is certain relationship to the adsorption strength of drop, therefore separate pulling force and be able to reflect out material
Expect surface to the absorption property of impurity, in conjunction with single detected materials surface amount of droplets, size, can relatively accurately reflect to
It measures and monitor the growth of standing timber the self-cleaning property of material.
(5) provided by the present invention for the test method of characterization material surface self-cleaning property, pass through single detected materials table
EDS maps have the image of drop, on the one hand can more intuitively illustrate the self-cleaning property of material, on the other hand know relative to human eye
Not, can to avoid the collimation error generated by influences such as droplet size, quantity, can accurately provide amount of droplets, size and
While distribution situation, all drops can also be summarized, determine that material surface adsorbs liquid object by the drop gross area
The maximum of matter determines the self-cleaning property of material surface.
Detailed description of the invention
Fig. 1 is the present invention for characterizing the tester light condition schematic diagram of material surface self-cleaning property.
Fig. 2 is the present invention for characterizing the tester loading status diagram of material surface self-cleaning property.
Fig. 3 is the present invention for characterizing the work shape when tester rotating electric machine of material surface self-cleaning property rotates 720 °
State schematic diagram.
Fig. 4 is the present invention for characterizing work when the two detected materials contact squeeze of tester of material surface self-cleaning property
Status diagram.
Fig. 5 is the electronic-circuit diagram of the connections such as controller and operation panel, force snesor, stepper motor, video camera.
In attached drawing, 1- pedestal, 2- operation panel, 3- fence, 4- force snesor, the first braced frame of 5-, 6- lifting support,
7- sliding block, 8- rotating electric machine, 9- shaft, the second braced frame of 10-, 11- clip, 12- bracket, 13- video camera, 14- protective cover
Installation point, 15- protective cover.
Specific embodiment
The embodiment of the present invention is provided below with reference to attached drawing, and technical solution of the present invention is carried out into one by embodiment
Clear, the complete explanation of step.Obviously, the embodiment is only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the content of present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiments belong to the range that the present invention is protected.
Embodiment
The present embodiment is by taking rectangle detected materials as an example, to the survey provided by the present invention for characterizing material surface self-cleaning property
Examination instrument and test method are described in detail.Detected materials need greater hardness, to ensure during the test, two to
It measures and monitor the growth of standing timber and expects that compression stage does not bend, if bending will make test result less than normal, using glass in the present embodiment.
The tester provided in this embodiment for being used to characterize material surface self-cleaning property, as shown in Figures 1 to 4, the test
Instrument includes pedestal 1 and installation first tensioning mechanism on the base, the second strainer, images mechanism, is set to side of base
Operation panel 2, the controller for being set to base interior, the fence and protective cover 15 that are circumferentially arranged along pedestal, the first tensioning device
Structure and the second strainer are respectively used to one piece of detected materials of tensioning；Protective cover 15 is used to for two detected materials being isolated.
As shown in Figures 1 and 2, first tensioning mechanism include the force snesor 4 being installed on pedestal and be mounted on power sensing
The first braced frame 5 on device.First braced frame 5 is made of eight metallic support rods, wherein four support rods are sequentially connected with
First supporting surface of rectangle is constituted, for carrying one piece of detected materials；The apex angle of remaining support rod one end and the first supporting surface connects
It connects, the other end is fixed on force snesor, so that the first braced frame is integrally fastened on force snesor.Constitute rectangle first
Clip 11 there are two being respectively set on two opposite support rods in four support rods of supporting surface, for clamping detected materials.
The material of support rod also can choose other materials with certain degree of hardness, but ensure not occurring in use process opposite move
It is dynamic.
As shown in Figures 1 and 2, the second strainer includes the lifting support 6 being installed on pedestal, the second braced frame 10
With rotating electric machine 8.The sliding rail being slidably matched and sliding block 7 are provided on the rack body of lifting support 6, sliding block is by driving mechanism band
It is dynamic to be moved along sliding rail；The present embodiment is using stepper motor as driving mechanism.Rotating electric machine 8 is fixed on sliding block 7, and in sliding block
It is moved up and down under drive along sliding rail.In the present embodiment, lifting support quantity is two, and two lifting supports are oppositely arranged, and two
Sliding block on a lifting support is located at same level, and the two does synchronizing moving.Second braced frame 10 is supported by eight metals
Bar composition, wherein at least four support rods, which are sequentially connected with, constitutes second supporting surface of rectangle, for carrying another piece of detected materials；
Constitute in four support rods of the second supporting surface of rectangle in the middle part of opposite two support rods respectively with the lifting support that is oppositely arranged
The output revolving shaft 9 of upper rotation terminal 8 connects, remaining four support rod is divided into two groups, and every group support rod one end is supported with second
The connection of face apex angle, the other end are connected in corresponding shaft 9.In addition, constituting phase in four support rods of the second supporting surface of rectangle
Pair two support rods on be respectively set there are two clip 11, for clamping detected materials.Second supporting surface is located at the first support
The top in face.The material of support rod also can choose other materials with certain degree of hardness, but ensure not send out in use process
Raw relative movement.
As shown in Figures 1 and 2, camera shooting mechanism includes the bracket 12 being installed on pedestal and the video camera being installed on bracket
13；Video camera 13 is located at the top of the second supporting surface, images upside down, the first supporting surface of face and the second supporting surface overlapping region
Centre, make its image pickup scope covering the first supporting surface and the second supporting surface overlapping region.
As shown in Figures 1 and 2, the present embodiment is using single-chip microcontroller as controller, respectively with operation panel 2, force snesor 4,
Rotating electric machine 8, stepper motor and video camera 13 are electrically connected.Operation panel 2 include be electrically connected with the controller respectively display screen,
Input keyboard, indicator light and power key, indicator light include green indicator light and orange indicating light, and green indicator light is surveyed for showing
The first test mode that instrument is in droplet-like state image in the second supporting surface detected materials of acquisition is tried, orange indicating light is for showing
Tester is in the second test mode of pulling force situation in two detected materials separation processes of measurement.
As shown in figure 5, single-chip microcontroller as controller by electronic circuit and operation panel, force snesor 4, rotating electric machine 8,
Stepper motor is connected with video camera 13, and the mechanical movement of rotating electric machine 8, stepper motor is manipulated by circuit, also can receive, locate
Manage the signal inputted from operation panel 2, force snesor 4 and video camera 13.
As shown in figure 3, there are four protective cover installation points 14 for setting on the fence 3 in region corresponding with the first supporting surface, protect
Shield 15 is removably mounted in protective cover installation point.Protective cover 15 is in cuboid-type, will include that the second supporting surface and power sense
The first tensioning mechanism cover of device gets up, for two detected materials to be isolated.
The present embodiment tests the self-cleaning ability on detected materials (glass) surface using distilled water as liquid.To be measured
Before material is tested, need first to carry out the following processing detected materials surface:
(1) under ultrasound condition, 1min is cleaned to detected materials with dehydrated alcohol；
(2) under ultrasound condition, 1min is cleaned to detected materials with distilled water；
(3) detected materials after cleaning dried in the air, dried.
Include following operating procedure using test process of the above-mentioned tester to material surface self-cleaning property:
(1) power on, tester is made to enter init state, power key is shinny at this time, and tester enters preparation state；
The sliding block 7 on lifting support can be made to be in extreme higher position at this time.
(2) detected materials two pieces are cut into according to the shape of the first supporting surface and the second supporting surface (to be preferably slightly less than
The rectangle of first supporting surface and the second supporting surface), then two pieces of detected materials are individually fixed in the first supporting surface and the second support
It on face, and is clamped with clip 11, it is ensured that be fixedly secured；And protective cover is mounted in the protective cover installation point 14 of fence, it prevents
The liquid substance of detected materials being adhered on the second supporting surface in operation in next step fall on the first supporting surface wait measure and monitor the growth of standing timber
Material.
(3) prepare enough distilled water, distilled water is added dropwise with detected materials of the rubber head dropper on the second supporting surface until
It is paved with detected materials surface.
(4) the first test mode being set by tester, 2 green indicator light of operation panel lights, rotating electric machine 8 is controlled,
The detected materials for driving the second braced frame and being fixed on the second supporting surface slowly rotate 720 ° (revolving speed is about 360 °/min),
After stopping rotating, is focused using video camera and obtain the detected materials status image on the second supporting surface, as shown in Figure 3；And it will
The image of acquisition is shown on the display screen.
(5) after Image Acquisition, rotating electric machine 8 is controlled, drive the second braced frame and is fixed on the second supporting surface
Detected materials continue 180 ° of rotation to detected materials with water droplet facing towards the detected materials on the first supporting surface, and remove
Protective cover 15.
(6) the second test mode is set by tester, 2 orange indicating light of operation panel lights, and controls lifting support, sliding
Block 7 drives the second braced frame and the detected materials being fixed on the second supporting surface to slowly move downward, and (rate travel is no more than
It 1mm/s) is extremely contacted with the detected materials on the first supporting surface, and generates and sufficiently squeeze, (pressure is by power until pressure reaches 15N
Sensor detects to obtain, can real-time display on the display screen of operation panel) afterwards control lifting support stop decline, keep squeeze
Time 20s is pressed, as shown in Figure 4；Control lifting support rises sliding block at the same rate later, while recording force snesor inspection
The pulling force size measured, and show on the display screen；Until two pieces of detected materials are kept completely separate, numerical value before pulling force is mutated is obtained
That is the pulling force maximum value in two pieces of detected materials separation processes.
(7) self-cleaning of the pulling force maximum value that the status image and step (6) acquired by step (4) obtains to detected materials
It can be carried out analysis.
According to the conventional means that this field has disclosed, analyze first in the detected materials status image on the second supporting surface
Supporting surface and the second supporting surface overlapping region, statistics obtain detected materials surface water droplet quantity on the second supporting surface, size and divide
Cloth situation.Detected materials surface water droplet quantity, size and distribution situation and two on the second supporting surface obtained by above-mentioned statistics
Pulling force maximum value in block detected materials separation process can carry out overall merit to the self-cleaning property of detected materials, be people couple
The selection of self-cleaning material provides selection gist.Through researching and analysing, on the second supporting surface detected materials surface water droplet quantity it is more,
Size is larger, and the pulling force in two pieces of detected materials separation processes is larger, shows that detected materials self-cleaning property is poor；Conversely, the
Detected materials surface water droplet negligible amounts, size are smaller on two supporting surfaces, and the pulling force in two pieces of detected materials separation processes is smaller,
Show that detected materials self-cleaning property is preferable.
After test, the sliding block on lifting support is risen into extreme higher position, removes the first braced frame and the second support
Detected materials on frame, the distilled water in wiped clean detected materials and tester and protective cover close tester, test
Process terminates.
It should be noted that being needed as far as possible in order to ensure the quantitative analysis in the test process of material surface self-cleaning property
Meet the following: (1) distilled water that detected materials surface on the second supporting surface is added dropwise will reach supersaturation and (be paved with distillation
Water, preferably reach the critical point that will overflow be more than in other words detected materials adsorbable distilled water maximum value), make its
Then in overturning, detected materials surface is got rid of as far as possible more than its adsorbable water of institute and is fallen, the distillation that detected materials surface is finally adsorbed
The amount of water is its adsorbable maximum value of institute, this is obtained by the detected materials status image on the second supporting surface collected；
(2) when the self-cleaning ability to two or more different materials is tested, it is ensured that squeeze pressure and lifting support decline stop
The stable time is identical afterwards, so that the ability that air between two detected materials is discharged in extrusion process is identical, reduces other factors
Two kinds of material separation brings are influenced, absorption of the maximum pull quantitative reaction material to water in two kinds of material separation process is made
Ability, adsorption capacity is bigger, and pulling force needed for two kinds of material separation also increases with it.
The present invention is used to characterize the tester of material surface self-cleaning property and test method is a kind of easy, comprehensive, accurate
The measuring technology for quantifying material surface self-cleaning property is applicable to any material for its any complete non-absorbent liquid
Clean surfaces performance test, the material with certain self-cleaning performance is particularly suitable for, for this kind of material, in step
(4) in rotary course, distilled water is fallen by most of got rid of, even if staying in the water droplet on detected materials surface, not only quantity is few, and size is small,
Dispersibility distribution, it is difficult to realize quantitative analysis, the tester and test method provided through the invention at this time, it is clear to obtain
The second supporting surface on detected materials status image, using existing computer picture region differentiate statistical software (such as
Promega Colony Counter APP software) can accurately it quantify in detected materials status image on the second supporting surface
Water droplet number and drop size, in conjunction with the pulling force separated between two pieces of detected materials, it can be achieved that detected materials clean surfaces
Performance is accurately analyzed.
Water above can be substituted with other liquids, not only can realize the self-cleaning ability on different materials surface
Test superiority and inferiority, can also realize that same material tests the self-cleaning abilities of different liquids, there is wide applicability.
Claims (10)
1. a kind of for characterizing the tester of material surface self-cleaning property, it is characterised in that including pedestal (1) and be mounted on pedestal
On first tensioning mechanism, the second strainer, camera shooting mechanism and protective cover (15), first tensioning mechanism and the second strainer
It is respectively used to one piece of detected materials of tensioning；
The first tensioning mechanism includes the force snesor (4) being installed on pedestal and the first support being mounted on force snesor
Frame (5), the first braced frame are provided with the first supporting surface for carrying one piece of detected materials；
Second strainer includes the lifting support (6) being installed on pedestal, the second braced frame (10) and rotating electric machine
(8)；The rotating electric machine (8) is installed on lifting support, and moves up and down along the vertical direction under the driving of lifting support；Institute
The second braced frame (10) is stated to be fixed on the output revolving shaft (9) of rotating electric machine；Second braced frame (10) setting is useful
In the second supporting surface for carrying another piece of detected materials；Second supporting surface is located at the top of the first supporting surface；
The camera shooting mechanism includes the bracket (12) being installed on pedestal and the video camera (13) being installed on bracket；The camera shooting
Machine (13) is located at the top of the second supporting surface, and the overlapping region of its image pickup scope covering the first supporting surface and the second supporting surface；
The protective cover (15) is used to for two detected materials being isolated, and is placed between the first supporting surface and the second supporting surface.
2. according to claim 1 for characterizing the tester of material surface self-cleaning property, it is characterised in that described first
Support frame frame (5) is by more support bar groups at wherein at least three support rods, which are sequentially connected with, constitutes the first supporting surface, remaining support rod
It is fixed between the first supporting surface and force snesor.
3. according to claim 1 for characterizing the tester of material surface self-cleaning property, it is characterised in that the lifting branch
The sliding rail being slidably matched and sliding block (7) are provided on the rack body of frame (6), the sliding block is driven by driving mechanism and moved along sliding rail
It is dynamic；The rotating electric machine (8) is fixed on sliding block (7).
4. according to claim 3 for characterizing the tester of material surface self-cleaning property, it is characterised in that the lifting branch
Frame quantity is two, and two lifting supports are oppositely arranged, and the opposite both ends of the second braced frame (10) are respectively fixedly connected in being mounted on
On rotating electric machine output revolving shaft on two lifting supports.
5. according to claim 1 or 3 or 4 is described for characterizing the tester of material surface self-cleaning property, it is characterised in that described
Second braced frame (10) is sequentially connected at, wherein at least three support rods by more support bar groups and constitutes the second supporting surface,
Remaining support rod is fixed between the second supporting surface and rotating electric machine output revolving shaft.
6. according to claim 1 for characterizing the tester of material surface self-cleaning property, it is characterised in that described first
The support face both ends opposite with the second supporting surface are separately provided for clamping the clip (11) of detected materials.
7. according to claim 1 for characterizing the tester of material surface self-cleaning property, it is characterised in that further comprise
It is set to the operation panel (2) of side of base and is set to the internal controller of pedestal (1)；The controller respectively with operating surface
Plate (2), force snesor (4), rotating electric machine (8), the driving mechanism of lifting support and video camera (13) electrical connection.
8. according to claim 7 for characterizing the tester of material surface self-cleaning property, it is characterised in that the operating surface
Plate (2) includes display screen, input keyboard, indicator light and the power key being electrically connected with the controller respectively.
9. according to claim 1 or 2 or 3 or 4 or or 7 or 8 testers for being used for marking material clean surfaces performance, it is special
Sign is to further comprise the fence (3) being circumferentially arranged along pedestal；The height of the fence (3) is higher than the first supporting surface；It is described
Protective cover is removably mounted on fence (3).
10. a kind of for characterizing the test method of material surface self-cleaning property, it is characterised in that any using claim 1 to 8
Tester described in claim follows the steps below:
(1) two pieces of detected materials are individually fixed on the first supporting surface and the second supporting surface, and cover first with protective cover
Detected materials on support face；
Liquid is added dropwise until being paved with detected materials surface in detected materials on (2) second supporting surfaces；
(3) rotating electric machine is controlled, makes the second braced frame that the detected materials on the second supporting surface be driven to rotate at least 720 °, stops
After rotation, the detected materials status image on the second supporting surface is obtained using video camera；
(4) control rotating electric machine, make the second braced frame drive the detected materials on second supporting surface with drop facing towards
Detected materials on first supporting surface, and remove protective cover；
(5) lifting support is controlled, makes the second braced frame that detected materials on the second supporting surface be driven to be moved downward to and first
Detected materials contact on support face, and generate and sufficiently squeeze, control lifting support stops decline after pressure reaches at least 15N, protects
It holds and squeezes at least 20s, control lifting support later and rise, while recording pulling force size that force snesor obtains until two pieces to be measured
Material is kept completely separate, and obtains the pulling force maximum value before pulling force is mutated in numerical value i.e. two piece detected materials separation process；
(6) the pulling force maximum value obtained by the status image and step (6) of step (3) acquisition to the self-cleaning properties of detected materials into
Row analysis.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118897007A (en) * | 2024-10-09 | 2024-11-05 | 山东汇科工程检测有限公司 | A nondestructive testing device for metal sheet |
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