CN103196825A - Adhesion force testing device for nanofiltration membrane - Google Patents
Adhesion force testing device for nanofiltration membrane Download PDFInfo
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- CN103196825A CN103196825A CN 201210007906 CN201210007906A CN103196825A CN 103196825 A CN103196825 A CN 103196825A CN 201210007906 CN201210007906 CN 201210007906 CN 201210007906 A CN201210007906 A CN 201210007906A CN 103196825 A CN103196825 A CN 103196825A
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- diaphragm
- connector
- pressure gauge
- adhesion force
- nanofiltration membrane
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Abstract
The invention discloses an adhesion force testing device for a nanofiltration membrane. The device comprises a pressure gauge with a pressure reducing valve; one end of the pressure gauge is connected with a compressed air fast joint; and the other end of the pressure gauge is connected with a sealed pressure bearing system composed of a connector, an upper cover, an O type sealing ring, a support network and a seat for placing a diaphragm to be tested. The invention overcomes the defect of difficulty in measuring adhesion force of nanofiltration membrane of an existing adhesion force test device, not only can effectively test adhesion force of the nanofiltration membrane but also has advantages of simple manufacture and convenient operation.
Description
Technical field
The present invention relates to a kind of proving installation, be specifically related to a kind of proving installation that can be used for measuring the bounding force of nanofiltration diaphragm.
Background technology
NF membrane is a kind of diffusion barrier new varieties that development in recent years is got up.NF membrane is a kind of diffusion barrier new varieties that development in recent years is got up.And composite nanometer filtering film has obtained in fields such as food, chemical industry, pharmacy, water treatments using widely especially, and its functional layer as thin as a wafer that comprises has the basic function that selection sees through, and can reduce resistance to mass tranfer, and water flux is improved greatly; Thick porous support layer then provides film to use necessary high strength under the certain pressure condition.Bonding not coming off between functional layer and the basement membrane is to guarantee that the NF membrane functional layer satisfies the basic premise of various performance requirements, and with regard to evaluating combined film quality, the degree of adhesion between functional layer and the basement membrane is an extremely important measurement index.
Present stage has much about the apparatus and method of testing bounding force between the common composite bed, many entity and individual also employment application patent.Shengyi Science and Technology Co., Ltd, Guangdong has applied for the utility application (number of patent application is 200720048691.8) of " a kind of interlayer adhesion testing making apparatus " by name on February 14th, 2007, it discloses a kind of interlayer adhesion testing making apparatus, it includes test board, activity fixedly has two slide rails on the test board, movable on the test board between two slide rails fixedly have the laminate holder, is limited with wedge shaped ejector pin between two slide rails; It also includes the haulage gear of traction wedge shaped ejector pin; The lozenges of described wedge shaped ejector pin has fillet foremost; The upper end of described two slide rails is fixed with the front and back crossbeam, and front beam is combined with upper mobile board, and bolt has been threaded on the upper mobile board; The laminate holder also is combined with down portable plate, and bolt has been threaded on the following portable plate; The advantage of this technical scheme is to adopt in advance to peel off band in the laminate stamp and form the mode of peeling off band, makes that cohesive force changes into the standard unit's numerical value that can test between the whole flaggy that is difficult to quantize; Owing to adopt wedge shaped ejector pin to peel off band, can avoid peeling off band and in the process of peeling off, rupture, can improve the efficient of test greatly.But because the NF membrane special nature, this kind device is not suitable for measuring the bounding force of NF membrane.Suchlike patented technology or proprietary technology also have a lot, but all fail to carry out structural design targetedly at the characteristics of NF membrane, so all be difficult to test the bounding force of NF membrane.For now, in the scope that the applicant retrieves, Shang Weijian tests the product of NF membrane bounding force or the bibliographical information of method specially.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiency that existing bounding force proving installation is difficult to measure the NF membrane bounding force, a kind of nanofiltration diaphragm bounding force proving installation is provided, this device can not only the Validity Test NF membrane bounding force, and make simple, easy to operate.
The present invention solves the problems of the technologies described above the technical scheme of taking: a kind of nanofiltration diaphragm bounding force proving installation, comprise the pressure gauge that has reduction valve, described pressure gauge one end is connected with pressurized air rapid-acting coupling, and the described pressure gauge other end links to each other with the diaphragm seal pressure bearing system.
As a further improvement on the present invention, described diaphragm seal pressure bearing system comprises connector, upper end cover, O RunddichtringO, supporting network and is used for placing the base of diaphragm to be measured.
Further improve as of the present invention, described connector has internal thread, described upper end cover is provided with the external thread that matches with connector, and described upper end cover, connector and O RunddichtringO and the supporting network be located at therebetween closely cooperate and make base portion constitute seal cavity.
Using method of the present invention is: (1) prepares diaphragm to be measured, is cut into the suitable dimension shape; (2) diaphragm is positive outwards is placed on the testing base naturally; (3) cover tightly upper end cover, guarantee diaphragm side leakage free to be measured; (4) screw connector, thoroughly seal diaphragm to be measured; (5) communication with carrier gas is slowly opened reduction valve, and pressure is slowly risen; (6) when pressure rises to a certain degree, local can the disengaging from propping material of diaphragm breaks, and sends tangible sound simultaneously, records nebulizer gas pressure this moment; (7) select same batch of diaphragm, repeat said process, average, be the measured value of this batch diaphragm bounding force.
Advantage of the present invention is can be at special nature and the structure of NF membrane, and by simple structural design, thereby the pressure that forces the NF membrane functional layer to be separated with supporting layer when test draws its bounding force, and principle is simple, and is easy to use.In addition, structure of the present invention is also comparatively simple, and it is comparatively easy to make, and cost is also comparatively cheap.
Description of drawings
Fig. 1 is structural representation of the present invention.Wherein: 1. pressurized air rapid-acting coupling, 2. reduction valve, 3. pressure gauge, 4. base, 5. upper end cover, 6.O RunddichtringO, 7. supporting network, 8. connector.
Embodiment
Below in conjunction with drawings and Examples principle of the present invention and advantage are further elaborated.
As shown in Figure 1, a kind of nanofiltration diaphragm bounding force proving installation, comprise the pressure gauge that has reduction valve, described pressure gauge one end is connected with pressurized air rapid-acting coupling, the described pressure gauge other end with by connector, upper end cover, O RunddichtringO, supporting network be used for placing the diaphragm seal pressure bearing system that the base of diaphragm to be measured constitutes and link to each other.Wherein, described connector has internal thread, and described upper end cover is provided with the external thread that matches with connector, and described upper end cover, connector and O RunddichtringO and the supporting network be located at therebetween closely cooperate and make base portion constitute seal cavity.The main effect of each parts is: pressurized air rapid-acting coupling is used for connecting pressurized air, for device provides carrier gas; Reduction valve can be regulated nebulizer gas pressure, makes the suitable pressure of diaphragm carrying to be measured; Pressure gauge is used for showing diaphragm bearing pressure to be measured; Base is used for placing diaphragm to be measured, the back is installed forms airtight pressure space; Upper end cover has external thread structure, can cooperate base, O type circle, supporting network, connector to place diaphragm to be measured with sealing; The O RunddichtringO seals diaphragm to be measured; Supporting network prevents that deformation is excessive in the diaphragm pressure-bearing process to be measured, guarantees diaphragm average force to be measured; Connector has female thread structure, is used for closely connecting base and upper end cover.
Though it is pointed out that above-described embodiment to the present invention's detailed text description of contrasting, these text descriptions are just to the simple description of mentality of designing of the present invention, rather than to the restriction of thinking of the present invention.Any combination, increase or modification that is no more than mentality of designing of the present invention all falls within the scope of protection of the present invention.
Claims (3)
1. a nanofiltration diaphragm bounding force proving installation comprises the pressure gauge that has reduction valve, and described pressure gauge one end is connected with pressurized air rapid-acting coupling, it is characterized in that the described pressure gauge other end links to each other with the diaphragm seal pressure bearing system.
2. nanofiltration diaphragm bounding force proving installation according to claim 1 is characterized in that described diaphragm seal pressure bearing system comprises connector, upper end cover, O RunddichtringO, supporting network and is used for placing the base of diaphragm to be measured.
3. nanofiltration diaphragm bounding force proving installation according to claim 2, it is characterized in that described connector has internal thread, described upper end cover is provided with the external thread that matches with connector, and described upper end cover, connector and O RunddichtringO and the supporting network be located at therebetween closely cooperate and make base portion constitute seal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210007906 CN103196825A (en) | 2012-01-09 | 2012-01-09 | Adhesion force testing device for nanofiltration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210007906 CN103196825A (en) | 2012-01-09 | 2012-01-09 | Adhesion force testing device for nanofiltration membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103196825A true CN103196825A (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210007906 Pending CN103196825A (en) | 2012-01-09 | 2012-01-09 | Adhesion force testing device for nanofiltration membrane |
Country Status (1)
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| CN (1) | CN103196825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124399A (en) * | 2016-06-17 | 2016-11-16 | 福建鑫华股份有限公司 | A kind of overlay film air filtration felt film laminating fastness test device and method of testing |
| CN106323871A (en) * | 2016-08-18 | 2017-01-11 | 温州市大荣纺织仪器有限公司 | Fabric film covering fastness testing method |
-
2012
- 2012-01-09 CN CN 201210007906 patent/CN103196825A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124399A (en) * | 2016-06-17 | 2016-11-16 | 福建鑫华股份有限公司 | A kind of overlay film air filtration felt film laminating fastness test device and method of testing |
| CN106323871A (en) * | 2016-08-18 | 2017-01-11 | 温州市大荣纺织仪器有限公司 | Fabric film covering fastness testing method |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |