CN107192664A - Organic/inorganic composite material acid rain ultraviolet erosion test device and method - Google Patents
Organic/inorganic composite material acid rain ultraviolet erosion test device and method Download PDFInfo
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- CN107192664A CN107192664A CN201710650357.8A CN201710650357A CN107192664A CN 107192664 A CN107192664 A CN 107192664A CN 201710650357 A CN201710650357 A CN 201710650357A CN 107192664 A CN107192664 A CN 107192664A
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- 238000003916 acid precipitation Methods 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 230000003628 erosive effect Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 5
- 229910003471 inorganic composite material Inorganic materials 0.000 title abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 49
- 230000037452 priming Effects 0.000 claims abstract description 23
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims abstract description 3
- 239000002131 composite material Substances 0.000 claims description 27
- 229910010272 inorganic material Inorganic materials 0.000 claims description 25
- 239000011147 inorganic material Substances 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 14
- 238000010998 test method Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000003595 mist Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005530 etching Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 230000001808 coupling effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention provides a kind of organic/inorganic composite material acid rain ultraviolet erosion test device and method, including the chamber communicated with each other by shower and liquor box, there is the atomizer connected with shower on the top of the chamber, the inwall of the chamber is provided with several uviol lamps, the experiment box cavity middle position is provided with the sample stage for being used for placing organic/inorganic composite material sample in the lower section of atomizer, acid rain solution is provided with the liquor box, the pipeline of the shower is provided with self priming pump.The present invention considers the influence of acid-rain corrosion and ultraviolet irradiation collective effect to organic/inorganic composite material etching characteristic, the terminal of uviol lamp and acid rain spray system is arranged in a chamber, and with the connection and disconnection of timed unit control relay, realize " integration " and " automation " control of test organic/inorganic composite material under the effect of acid rain ultraviolet coupling.
Description
Technical field
It is to be related to a kind of Organic-inorganic composite material specifically the present invention relates to a kind of material property technical field of measurement and test
Expect acid rain-ultraviolet erosion test device and method, i.e., to Organic-inorganic composite material under acid rain-ultraviolet coupling effect
The characteristic of material is measured.
Background technology
Acid rain and depletion of the ozone layer are current two big global environmental problems, and depletion of the ozone layer will cause excessive ultraviolet
Radiation.In two kinds of environment of acid rain and ultraviolet, acid rain mainly has corrosiveness to inorganic material, and ultraviolet is mainly to organic material
Material has corrosiveness.
Chinese patent《A kind of corrosion simulated device of cement-based material acid rain environment》（Publication number：CN105004653A）It is open
It is a kind of effectively to simulate and there is the high cement-based material of multi-functional, applied widely, high intelligent control degree
Acid rain environment corrosion device；Chinese patent《Asphalt ultraviolet ray ageing experimental rig》（Publication number：CN203705318U）Disclose
A kind of asphalt ultraviolet ray ageing experimental rig simulates the aging conditions of pitch under the conditions of nature humiture and UV environment.
Above-mentioned patent is to simulate inorganic material or organic material respectively in two kinds of single factor test environment of acid rain and ultraviolet
The device of lower corrosion, does not propose the test device of material etching characteristic under two kinds of environment coupled actions of acid rain and ultraviolet.
Above-mentioned consideration is based on, the present invention provides a kind of composite organic-inorganic material in acid rain-ultraviolet coupling effect
The test device and method of testing of lower etching characteristic.
The content of the invention
The present invention adapts to real needs, devises a kind of composite organic-inorganic material to overcome the deficiencies in the prior art
Acid rain-ultraviolet erosion test device, and acid rain-ultraviolet corruption is carried out to composite organic-inorganic material using the device
The method of testing of corrosion test.
In order to realize the purpose of the present invention, the present invention is adopted the following technical scheme that：
A kind of composite organic-inorganic material acid rain-ultraviolet erosion test device, including the examination communicated with each other by shower
There is the atomizer connected with shower on tryoff, liquor box, the top of the chamber, if the inwall of the chamber is provided with
Dry uviol lamp, the experiment box cavity middle position is provided with the sample for being used for placing composite sample in the lower section of atomizer
Acid rain solution is provided with platform, the liquor box, the pipeline of the shower is provided with self priming pump.
Return duct is additionally provided between the chamber and liquor box, described return duct one end is connected with the bottom of chamber,
The other end is connected with the top of liquor box.
The return duct is connected with the bottom of chamber respectively by two branch pipes.
Automated condtrol branch road is additionally provided between the self priming pump and chamber, the control device includes the first relay
Device, the second relay, control cabinet, the uviol lamp are electrically connected by the first relay with control cabinet, and the self priming pump passes through
Two relays are electrically connected with control cabinet, and second relay is time-delay relay.
The shower is divided into more than two spray branch pipes in its end, and the end of each spray branch pipe connects one
Atomizer.
The outside of the uviol lamp is provided with anti-corrosion lampshade, and the anti-corrosion lampshade is in the hollow square structure of a side opening.
The sample stage is porous hollow stainless-steel sheet, and the bottom of the sample stage, which is provided with, is placed on chamber bottom
Support column.
A kind of method of testing of composite organic-inorganic material acid rain-ultraviolet erosion test device, including following step
Suddenly：
The first step, according to testing program, sets timed unit；
Second step, sample is placed on sample stage, and the acid rain solution configured is fitted into liquor box；
3rd step, the circuit of power supply and uviol lamp is connected, and uviol lamp is started working, and composite organic-inorganic material sample is entered
Row continuation is irradiated；
4th step, after the time that ultra violet lamp reaches setting, according to the testing program of setting, selection continues to turn on or disconnects purple
The circuit of outer lamp, is also turned on the circuit of acid rain spray system, and self priming pump is started working and acid rain solution is delivered into spray piping
Sample is sprayed by atomizer；
5th step, was sprayed after the time for reaching setting, disconnected the circuit of acid rain spray system, and according to the testing program of setting,
Maintenance connection or the circuit of turn on automatically uviol lamp, start next circulation.
With in the 4th step, being disconnected after ultra violet lamp 12N hours in 3rd step, connect acid rain spray and thinks system
Circuit, self priming pump start-up operation 24N hours, this is a circulation, 5-50 circulation is carried out altogether, N is natural number.
3rd step 12N hours is a circulation with the 4th step, being irradiated by uviol lamp continuation, in continuation photograph
During penetrating, do not spray within first 24 hours, persistently spray afterwards, 5-50 circulation is carried out altogether, N is natural number.
The beneficial effects of the present invention are：
1. the terminal of uviol lamp and acid rain spray system is arranged in a chamber by the present invention, and with timed unit control
The connection and disconnection of relay, realize " one of the test composite organic-inorganic material under acid rain-ultraviolet coupling effect
Change " and " automation " control.
2. realize ultraviolet irradiation time, number of times, the spray time of acid rain, the controllable single argument or many of number of times etc.
Variables choice, so that the different composite organic-inorganic material of more definite detection corrodes under acid rain-ultraviolet coupling effect
Characteristic.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram of the invention.
Fig. 2 is chamber internal structural map；
Fig. 3 is chamber internal cross section figure；
Fig. 4 is spray and the circuit control principle figure of ultraviolet irradiation.
In figure：1 chamber, 2 liquor boxs, 3 self priming pumps, 4 control cabinets, 5 return ducts, 6 spray mains, 7 spray branch pipes, 8 mists
Change shower nozzle, 9 be the first relay, 10 be the second relay, 11 uviol lamps, 12 sample stages.
Embodiment
Embodiments of the invention are described in detail in conjunction with accompanying drawing 1-4, the present invention is described in more detail.
Embodiment one:
As shown in Fig. 1-4, a kind of composite organic-inorganic material acid rain-ultraviolet erosion test device, including pass through spray
There are the atomizer 8 connected with shower 6, institute on chamber 1 that pipe 6 communicates with each other, liquor box 2, the top of the chamber 1
The inwall for stating chamber 1 is provided with several uviol lamps 11, and the lower section of atomizer is located in the inner chamber of chamber 1 provided with being used for
Place and acid rain solution is provided with the sample stage 12 of composite sample, the liquor box 2, the pipeline of the shower is provided with certainly
Sucking pump 3.
Return duct 5, described one end of return duct 5 and the bottom of chamber 1 are additionally provided between the chamber 1 and liquor box 2
Connection, the other end is connected with the top of liquor box 2.
Bottom of the return duct 5 by two branch pipes respectively with chamber 1 is connected.
Automated condtrol branch road is additionally provided between the self priming pump 3 and chamber 1, the control device includes the first relay
Device 9, the second relay 10, control cabinet 4, the uviol lamp 11 are electrically connected by the first relay 9 with control cabinet 4, the self-priming
Pump 3 is electrically connected by the second relay 10 with control cabinet 4, and second relay is time-delay relay.
Whole system is automation control system, including time showing module, time block, reset circuit, by monolithic
Machine is controlled, and above-mentioned the first relay 9, the second relay 10, uviol lamp 11, self priming pump etc. are by single-chip microcomputer control.
The shower 6 is divided into more than two spray branch pipes 7 in its end, and the end of each spray branch pipe 7 is connected
One atomizer 8.
The outside of the uviol lamp 11 is provided with anti-corrosion lampshade, and the anti-corrosion lampshade is in the hollow square structure of a side opening.
The sample stage 12 is porous hollow stainless-steel sheet, and the bottom of the sample stage 12, which is provided with, is placed on chamber 1
The support column of bottom.
The testing program that the present embodiment is set is that acid rain spray and ultraviolet irradiate alternately, and setting is followed for 72 hours for one
Ring, carries out ultraviolet irradiation in first 24 hours in circulating each time, carries out acid rain spray within latter 48 hours, circulate 20 times altogether.
A kind of method of testing of composite organic-inorganic material acid rain-ultraviolet erosion test device, including following step
Suddenly：
The first step, according to testing program, sets timed unit；
Second step, sample is placed on sample stage, and the acid rain solution configured is fitted into liquor box；
3rd step, the circuit of power supply and uviol lamp is connected, and uviol lamp is started working, and composite organic-inorganic material sample is entered
Row continuation is irradiated；
4th step, after the time that ultra violet lamp reaches setting, according to the testing program of setting, selection continues to turn on or disconnects purple
The circuit of outer lamp, is also turned on the circuit of acid rain spray system, and self priming pump is started working and acid rain solution is delivered into spray piping
Sample is sprayed by atomizer；
5th step, was sprayed after the time for reaching setting, disconnected the circuit of acid rain spray system, and according to the testing program of setting,
Maintenance connection or the circuit of turn on automatically uviol lamp, start next circulation.
With in the 4th step, being disconnected after ultra violet lamp 12N hours in 3rd step, connect acid rain spray and thinks system
Circuit, self priming pump start-up operation 24N hours, this is a circulation, 5-50 circulation is carried out altogether, N is natural number.
3rd step 12N hours is a circulation with the 4th step, being irradiated by uviol lamp continuation, in continuation photograph
During penetrating, do not spray within first 24 hours, persistently spray afterwards, 5-50 circulation is carried out altogether, N is natural number.
Comprise the following steps when the present embodiment is used：
（1）According to testing program, timed unit is set；
（2）Sample is placed on sample stage 12, the acid rain solution prepared is fitted into liquor box 2；
（3）The circuit of power supply and uviol lamp 11 is connected, uviol lamp 11 is started working, continuation photograph is carried out to composite sample
Penetrate；
（4）After 24 hours, the circuit of connection uviol lamp 11 disconnects automatically, while turn on automatically connects the circuit of self priming pump 3, self-priming
Pump 3 is started working and delivers to spray main 6 and spray branch pipe 7 acid rain solution and sprayed by atomizer 8 after sample, spray
Solution flows into liquor box 2 by return duct 5 and recycled；
（5）The circuit that self priming pump 3 is connected after 48 hours disconnects automatically, stops spray, while turn on automatically connection uviol lamp 11
Circuit, starts next circulation；
（6）When circulation reaches 20 times, the circuit of connection uviol lamp 11 and self priming pump 3 disconnects automatically, stops acid rain spray and ultraviolet
Light irradiation.
Sample is taken out, then follow-up parameter measurement can be carried out to sample.
Embodiment 2
Do not repeated with the something in common of embodiment one, difference is, the testing program of the present embodiment setting is that device starts
Spray interruption is carried out afterwards, and uviol lamp works uninterruptedly always, and setting 72 hours is a circulation, first 24 hours in circulating each time
Do not spray, spray within latter 48 hours, circulate 20 times altogether.
Comprise the following steps when the present embodiment is used：
（1）According to testing program, timed unit is set；
（2）Sample is placed on sample stage 12, the acid rain solution prepared is fitted into liquor box 2；
（3）The circuit of power supply and uviol lamp 11 is connected, uviol lamp 11 is started working, continuation photograph is carried out to composite sample
Penetrate；
（4）After 24 hours, turn on automatically connects the circuit of self priming pump 3, and self priming pump 3 is started working and acid rain solution is delivered into spray
Main 6 and spray branch pipe 7 spray the solution after sample, spray by atomizer 8 and circulated by the inflow liquor box 2 of return duct 5
Utilize；
（5）The circuit that self priming pump 3 is connected after 48 hours disconnects automatically, stops spray, starts next circulation；
（6）When circulation reaches 20 times, the circuit of connection uviol lamp 11 and self priming pump 3 disconnects automatically, stops acid rain spray and ultraviolet
Light irradiation.
Sample is taken out, then follow-up parameter measurement can be carried out to sample.
It is exemplary above by the embodiment described by accompanying drawing, is only used for explaining the present invention, and can not be construed to pair
The limitation of the present invention；For a person skilled in the art, can be in the case where not departing from the principle of the present invention and spirit to this reality
Apply example and carry out modification and parameter displacement, the scope of the present invention is by appended claims and its equivalent determination.
Claims (10)
1. a kind of composite organic-inorganic material acid rain-ultraviolet erosion test device, it is characterised in that：Including passing through spray
Managing on chamber (1), liquor box (2) that (6) communicate with each other, the top of the chamber (1) has the mist connected with shower (6)
Change shower nozzle (8), the inwall of the chamber (1), which is provided with several uviol lamps (11), chamber (1) inner chamber, is located at atomization
The lower section of shower nozzle is provided with the sample stage (12) for being used for placing composite organic-inorganic material sample, the liquor box (2) provided with acid
Rain solution, the pipeline of the shower is provided with self priming pump (3).
2. composite organic-inorganic material acid rain according to claim 1-ultraviolet erosion test device, its feature exists
In：Return duct (5), described return duct (5) one end and chamber (1) are additionally provided between the chamber (1) and liquor box (2)
Bottom is connected, and the other end is connected with the top of liquor box (2).
3. composite organic-inorganic material acid rain according to claim 2-ultraviolet erosion test device, its feature exists
In：Bottom of the return duct (5) by two branch pipes respectively with chamber (1) is connected.
4. composite organic-inorganic material acid rain according to claim 1-ultraviolet erosion test device, its feature exists
In：Automatic control device is additionally provided between the self priming pump (3) and chamber (1), the control device includes the first relay
Device (9), the second relay (10), control cabinet (4), the uviol lamp (11) are electrically connected by the first relay (9) with control cabinet (4)
Connect, the self priming pump (3) is electrically connected by the second relay (10) with control cabinet (4), second relay is delay relay
Device.
5. composite organic-inorganic material acid rain according to claim 1-ultraviolet erosion test device, its feature exists
In：The shower (6) is divided into more than two spray branch pipes (7) in its end, and the end for each spraying branch pipe (7) is connected
One atomizer (8).
6. composite organic-inorganic material acid rain according to claim 1-ultraviolet erosion test device, its feature exists
In：The outside of the uviol lamp (11) is provided with anti-corrosion lampshade, and the anti-corrosion lampshade is in the hollow square structure of a side opening.
7. composite organic-inorganic material acid rain according to claim 1-ultraviolet erosion test device, its feature exists
It is porous hollow stainless-steel sheet in the sample stage (12), the bottom of the sample stage (12), which is provided with, is placed on chamber (1)
The support column of bottom.
8. a kind of any one of use claim 1-7 composite organic-inorganic material acid rain-ultraviolet erosion test device
Method of testing, it is characterised in that comprise the following steps：
The first step, composite organic-inorganic material sample is placed on sample stage (12), and the acid rain solution configured is loaded into molten
In liquid case (2)；
Second step, the circuit of power supply and uviol lamp is connected, and uviol lamp is started working, and composite organic-inorganic material sample is entered
Row continuation is irradiated；
3rd step, after the time that ultra violet lamp reaches setting, according to the testing program of setting, selection continues to turn on or disconnects purple
The circuit of outer lamp, is also turned on the circuit of acid rain spray system, and self priming pump is started working and acid rain solution is delivered into spray piping
Sample is sprayed by atomizer；
4th step, was sprayed after the time for reaching setting, disconnected the circuit of acid rain spray system, and according to the testing program of setting,
Maintenance connection or the circuit of turn on automatically uviol lamp, start next circulation；
5th step, after the experiment termination time for reaching setting, the automatic electricity for disconnecting acid rain spray system and ultraviolet irradiation system
Road, stops acid rain spray and ultra violet lamp.
9. method of testing according to claim 8, it is characterised in that：In 3rd step with the 4th step, by uviol lamp
Irradiation is disconnected after 12N hour, connects acid rain spray and thinks the circuit of system, self priming pump start-up operation 24N hours, and this is followed for one
Ring, carries out 5-50 circulation, N is natural number altogether.
10. method of testing according to claim 8, it is characterised in that：In 3rd step and the 4th step, by uviol lamp
It 12N hours is a circulation that continuation, which is irradiated, in continuation irradiation process, does not spray within first 24 hours, persistently sprays afterwards, altogether
5-50 circulation is carried out, N is natural number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650357.8A CN107192664A (en) | 2017-08-02 | 2017-08-02 | Organic/inorganic composite material acid rain ultraviolet erosion test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710650357.8A CN107192664A (en) | 2017-08-02 | 2017-08-02 | Organic/inorganic composite material acid rain ultraviolet erosion test device and method |
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| Publication Number | Publication Date |
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| CN107192664A true CN107192664A (en) | 2017-09-22 |
Family
ID=59884673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710650357.8A Pending CN107192664A (en) | 2017-08-02 | 2017-08-02 | Organic/inorganic composite material acid rain ultraviolet erosion test device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764724A (en) * | 2017-10-23 | 2018-03-06 | 成都凯米拉科技有限公司 | The acid rain resistant device for detecting performance of high temperature corrosion-inhibiting layer |
| CN107941683A (en) * | 2017-12-20 | 2018-04-20 | 湖南科技大学 | A kind of acid and alkali corrosion device and method of rock sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720036A (en) * | 1993-06-30 | 1995-01-24 | Suga Test Instr Co Ltd | Machine for testing corrosion cycle of acid rain |
| CN203414391U (en) * | 2013-07-08 | 2014-01-29 | 国家电网公司 | Comprehensive power grid material corrosion environment simulator |
| CN104198358A (en) * | 2014-08-12 | 2014-12-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Multiple-factor accelerated aging test device for composite material electric pole |
| CN105004653A (en) * | 2015-07-08 | 2015-10-28 | 华东交通大学 | Cement-based material acid rain environment corrosion simulation apparatus |
| CN206930568U (en) * | 2017-08-02 | 2018-01-26 | 南昌大学 | Organic/inorganic composite material acid rain ultraviolet erosion test device |
-
2017
- 2017-08-02 CN CN201710650357.8A patent/CN107192664A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720036A (en) * | 1993-06-30 | 1995-01-24 | Suga Test Instr Co Ltd | Machine for testing corrosion cycle of acid rain |
| CN203414391U (en) * | 2013-07-08 | 2014-01-29 | 国家电网公司 | Comprehensive power grid material corrosion environment simulator |
| CN104198358A (en) * | 2014-08-12 | 2014-12-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Multiple-factor accelerated aging test device for composite material electric pole |
| CN105004653A (en) * | 2015-07-08 | 2015-10-28 | 华东交通大学 | Cement-based material acid rain environment corrosion simulation apparatus |
| CN206930568U (en) * | 2017-08-02 | 2018-01-26 | 南昌大学 | Organic/inorganic composite material acid rain ultraviolet erosion test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764724A (en) * | 2017-10-23 | 2018-03-06 | 成都凯米拉科技有限公司 | The acid rain resistant device for detecting performance of high temperature corrosion-inhibiting layer |
| CN107941683A (en) * | 2017-12-20 | 2018-04-20 | 湖南科技大学 | A kind of acid and alkali corrosion device and method of rock sample |
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Application publication date: 20170922 |
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