CN115286866A - Elastic material, electrodialysis plate frame and electrodialysis partition plate - Google Patents
Elastic material, electrodialysis plate frame and electrodialysis partition plate Download PDFInfo
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- CN115286866A CN115286866A CN202210933059.0A CN202210933059A CN115286866A CN 115286866 A CN115286866 A CN 115286866A CN 202210933059 A CN202210933059 A CN 202210933059A CN 115286866 A CN115286866 A CN 115286866A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/422—Electrodialysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention discloses an elastic material, an electrodialysis plate frame and an electrodialysis partition plate, belonging to the technical field of plate frame materials, wherein the elastic material comprises the following components in parts by weight: PP:50-80 parts of TPE:0.1-10 parts, PE:10-30 parts of TPH:0.1-10 parts of EVA:0.1-10 parts. The electrodialysis sheet frame is made of the elastic material and comprises: the base plate is provided with a plurality of elastic sealing convex parts on one side surface, the other side surface is a smooth plane, the heights of the elastic sealing convex parts are h, the vertical distance between the adjacent elastic sealing convex parts is d, and h/d =1/50-1/5. According to the elastic material, the electrodialysis plate frame and the electrodialysis partition plate, the elastic material has elasticity and hardness, and the prepared electrodialysis plate frame has better sealing performance by setting the height of the elastic sealing convex part and the vertical distance of the adjacent elastic sealing convex part according to the proportion on the basis of the elastic material, so that the sealing performance of the electrodialysis partition plate is improved.
Description
Technical Field
The invention belongs to the technical field of plate frame materials, and particularly relates to an elastic material, an electrodialysis plate frame and an electrodialysis partition plate.
Background
The electrodialysis partition board is one of essential accessories of the electrodialysis device, and the function of the partition board is to keep a certain distance between the negative membrane and the positive membrane to form a dense-dilute compartment, ensure the smoothness and the conduction current of water flow and keep the tightness. The common partition board is usually formed by matching or bonding a board frame and a partition net, and the partition net plays a role in stirring liquid flow and promoting turbulent flow. The material used for the panel frame should have a certain chemical stability, resistance to acid and alkali corrosion, and elasticity to achieve good sealing performance. At present, the commonly adopted plate frame materials comprise insulating materials such as polyvinyl chloride, polypropylene, polyethylene and the like, and can also adopt rubber.
However, the plate frame made of a single material in the prior art is difficult to satisfy the dual requirements of the sealing performance on the hardness and the elasticity of the plate frame material. In addition, in order to obtain good sealing performance, the existing plate frame mostly adopts a smooth plane and is matched with a material of the plate frame with elasticity, but the smooth plane elasticity of the plate frame made of the existing single material is insufficient, so that the sealing performance between the partition plate and the ion exchange membrane, particularly the homogeneous phase ion exchange membrane with small thickness, is poor, dense and fresh water leakage during the operation of the electrodialysis device is finally caused, and the working efficiency of the electrodialysis device is reduced.
Disclosure of Invention
The invention aims to provide an elastic material, an electrodialysis plate frame and an electrodialysis partition plate, wherein the elastic material has elasticity and hardness, and the prepared electrodialysis plate frame has better sealing performance by setting the height of an elastic sealing convex part and the vertical distance of an adjacent elastic sealing convex part on the basis of the elastic material, so that the sealing performance of the electrodialysis partition plate is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the elastic material provided by the invention comprises the following components in parts by weight:
PP:50-80 parts;
TPE:0.1-10 parts;
PE:10-30 parts;
TPH:0.1-10 parts;
EVA:0.1-10 parts.
Preferably, the following components are also included: EPDM:0.1-10 parts.
Preferably, the following components are also included: antioxidant: 0.2-0.5 part of toughening agent: 0.5-10 parts of an anti-blocking agent: 0.3-30 parts of fluorescent whitening agent: 0.01-0.05 part of antistatic agent: 0.5-2 parts.
Preferably, the antioxidant is antioxidant 1010 or antioxidant 168, the antiblocking agent is calcium carbonate, the fluorescent whitening agent is OB, and the antistatic agent is JK-23.
The invention also provides an electrodialysis plate frame which is made of the elastic material and comprises the following components: the base plate, one side of base plate has a plurality of elasticity sealing convex parts, and the other side is smooth plane, and the height of elasticity sealing convex part is h, and the vertical distance between adjacent elasticity sealing convex part is d, and h/d =1/50-1/5.
Preferably, the Shore C hardness of the elastic sealing convex part and the Shore C hardness of the base plate are both 85-95A.
Preferably, h/d =1/20-1/10, h =0.03-0.1mm, and the thickness of the substrate is 0.5-3mm.
Preferably, the resilient sealing protrusion is integrally extruded with the base plate.
Preferably, the cross-section of the resilient sealing protrusion is rectangular, triangular, arcuate or trapezoidal.
Preferably, the plurality of sealing projections are one or both of linear and zigzag, and intersect each other.
The invention also provides an electrodialysis partition plate which comprises the electrodialysis plate frame, a water distribution flow channel, a separation net and liquid guide holes, wherein the middle part of the base plate is provided with a cavity, the separation net is arranged in the cavity, the two ends of the base plate are both provided with the liquid guide holes, and the water distribution flow channel is communicated with the cavity and part of the liquid guide holes.
The invention has the beneficial effects that:
1. PP is used as a main material, and is selected to be blended with TPE, PE, TPH, EVA and EPDM, so that the obtained elastic material has elasticity and hardness, the problem that the existing single material is too soft or too hard is solved, and the Shore C hardness of the elastic material is controlled to be 85-95A.
2. On the basis of the elastic material, the proportion of the height of the elastic sealing convex part and the vertical distance of the adjacent elastic sealing convex part is selected according to the specific Shore C hardness value of the elastic material, and the proportion of the height of the elastic sealing convex part and the vertical distance of the adjacent elastic sealing convex part is set, so that the formed anti-leakage sealing structure has better sealing performance, an electrodialysis plate frame has better sealing performance, and the sealing performance of the electrodialysis separation plate is further improved.
3. The elastic sealing convex part integrally extruded with the base plate is arranged, so that on one hand, production and manufacturing are facilitated, and on the other hand, the problems that the sealing performance is poor, installation is troublesome, and the elastic sealing convex part drops and the like caused by the separated design are solved.
Drawings
Fig. 1 is a schematic top view of an electrodialysis plate frame according to an embodiment of the present invention.
Fig. 2 is a schematic front view of a first embodiment of the present invention.
Fig. 3 is an enlarged schematic view of a in fig. 2.
Fig. 4 is a schematic rear view of an electrodialysis plate frame according to an embodiment of the present invention.
Fig. 5 is a schematic top view of an electrodialysis spacer according to an embodiment of the invention.
Fig. 6 is a schematic top view of an electrodialysis separator according to an embodiment of the invention.
Fig. 7 is a schematic top view of an electrodialysis spacer according to an embodiment of the invention.
The labels in the figures are: 1-substrate, 2-elastic sealing convex part, 3-smooth plane, 4-water distribution flow channel, 5-isolating net, 6-liquid guide hole and 7-cavity.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Those not described in detail in this specification are within the skill of the art. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
the elastic material provided in the embodiment comprises the following components in parts by mass:
PP:50 parts of TPE:5 parts, PE:20 parts, TPH:10 parts, EVA:5 parts, EPDM:10 parts, antioxidant (antioxidant 1010): 0.2 part of toughening agent: 3 parts of an anti-blocking agent (calcium carbonate): 10 parts, fluorescent whitening agent (OB): 0.01 part, antistatic agent (JK-23): 1 part.
PP is adopted as a main material, and is selected to be blended with TPE, PE, TPH, EVA and EPDM, so that the obtained elastic material has elasticity and hardness, the problems of insufficient rigidity, poor ageing resistance, easy deformation, over-softness or over-hardness of the conventional single material are solved, and the Shore C hardness of the elastic material is 90A
The performance of the elastic material is further improved by adding the antioxidant, the toughening agent and the surfactant. The antioxidant improves the stability of the material, prevents the material from aging and prolongs the service life of the material. The flexibility of the material is improved through the toughening agent, and the elasticity of the material is improved. The anti-blocking agent acts as a skeleton in the material. The effect is that the material has great effect on the dimensional stability of the material, and the Young modulus, the bending strength and the impact property of the material can be improved. The surface gloss and surface smoothness of the material can also be improved. The optical whitening by the fluorescent whitening agent, the blue-violet fluorescence emitted by absorbing ultraviolet light and the yellowish light of the object are combined, so that a white product is whiter, and the brightness of the object with low transparency is improved. The antistatic agent greatly reduces the surface resistance of the material and eliminates the electrostatic hazard.
The preparation method of the elastic material comprises the following steps: PP, TPE, PE, TPH, EVA and EPDM are blended and extruded and granulated by an extruder to obtain the elastic material. Extruding the prepared elastic material by a sheet extruder, stretching, cooling and shaping by a roller press, and then slicing and shearing to form the electrodialysis plate frame.
As shown in fig. 1 to 4, the present invention further provides an electrodialysis plate frame made of the above elastic material, including: the base plate 1 has a plurality of elastic sealing convex parts 2 on the upper side surface of the base plate 1, a smooth plane 3 on the lower side surface, the height of the elastic sealing convex parts 2 is h, the vertical distance between adjacent elastic sealing convex parts 2 is d, h/d =1/20 in the embodiment, wherein h =0.1mm, d =2mm, and the thickness of the base plate 1 is 0.5mm.
When adjacent electrodialysis plate frames are stacked for use, the elastic sealing convex part 2 of the electrodialysis plate frame positioned below is attached to the smooth plane 3 of the base plate 1 of the electrodialysis plate frame positioned above, so that an anti-leakage sealing structure is directly formed, and the tightness of the anti-leakage sealing structure is good and bad due to the tight attachment degree between the elastic sealing convex part 2 and the smooth plane 3 of the base plate 1 of another electrodialysis plate frame matched with the elastic sealing convex part 2. On the basis of the elastic material, the proportion of the height of the elastic sealing convex part 2 to the vertical distance of the adjacent elastic sealing convex part 2 is selected according to the specific Shore C hardness value of the elastic material, the sealing performance of the formed anti-leakage sealing structure is better by setting the proportion of the height of the elastic sealing convex part 2 to the vertical distance of the adjacent elastic sealing convex part 2, and the phenomenon that the anti-leakage sealing structure is too soft due to too large proportion setting, so that the deformation coefficient is large, and the elastic sealing convex part 2 is too large in deformation, so that the sealing performance is not good is avoided; the hardness of the anti-seepage sealing structure is not too hard due to the fact that the proportion is too small, so that the deformation coefficient is small, the elastic sealing convex part 2 deforms too small, the sealing performance is poor due to the fact that the sealing structure is not well attached to the smooth plane 3 of the electrodialysis plate frame above the sealing structure in a sealing mode. So that the electrodialysis plate frame has better sealing performance.
In this embodiment, the cross section of the elastic sealing protrusion 2 is arc-shaped. The elastic sealing protrusion 2 is integrally extrusion-molded with the base plate 1. Adopt the setting with base plate 1 integrated extrusion moulding's elasticity sealing convex part 2, the production preparation of being convenient for on the one hand, on the other hand avoids because the leakproofness that the disconnect-type design caused is not good, the installation is troublesome, elasticity sealing convex part 2 drops the scheduling problem.
Since the shore C hardness of the elastic material is 90A, the shore C hardness of the elastic sealing convex portion 2 and the shore C hardness of the substrate 1 are both 90A. The hardness of the sealing performance of the leakage-proof sealing structure is set by the ratio of the height of the elastic sealing protrusion 2 and the vertical distance of the adjacent elastic sealing protrusion 2 on the one hand, and depends on the hardness of the elastic sealing protrusion 2 and the substrate 1 on the other hand. The sealing performance can be optimized only by combining the two. Therefore, the shore C hardness of the elastic sealing protrusion 2 and the base plate 1 cannot be too high or too low, and too high hardness causes too small deformation and too large hardness causes too large deformation. According to the invention, through carrying out a plurality of experiments and improvements on the self hardness and the hardness of the structural composition of the elastic material, the optimal Shore C hardness of the elastic sealing convex part 2 and the substrate 1 is finally obtained on the basis of setting the ratio of the height of the elastic sealing convex part 2 to the vertical distance of the adjacent elastic sealing convex part 2, namely, the optimal Shore C hardness is obtained by distributing the ratio of the components of the elastic material, so that the elastic material is not too hard or too soft on the basis of keeping the elasticity of the elastic material.
As shown in fig. 5, this embodiment further provides an electrodialysis partition plate, which includes the electrodialysis plate frame, the water distribution flow channel 4, the separation net 5, and the liquid guide holes 6, wherein the middle part of the base plate is provided with a cavity 7, the separation net 5 is disposed in the cavity 7, the two ends of the base plate are both provided with the liquid guide holes 6, and the water distribution flow channel 4 communicates the cavity 7 and part of the liquid guide holes 6.
Each of the elastic sealing protrusions 2 of the present embodiment is linear and intersects with each other to form a plurality of square sealing structures.
Example two:
as shown in fig. 6, the present embodiment is different from the first embodiment in that:
each of the elastic sealing protrusions 2 of the present embodiment is linear and intersects with each other to form a plurality of diamond-shaped sealing structures.
Example three:
as shown in fig. 7, the present embodiment is different from the first embodiment in that:
each elastic sealing convex part 2 of the embodiment is in a folded line shape and is intersected with each other to form a plurality of hexagonal sealing structures.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The elastic material is characterized by comprising the following components in parts by weight:
and (3) PP:50-80 parts;
TPE:0.1-10 parts;
PE:10-30 parts;
TPH:0.1-10 parts;
EVA:0.1-10 parts.
2. The elastic material according to claim 1, further comprising the following components in parts by mass:
EPDM:0.1-10 parts.
3. The elastic material according to claim 1 or 2, further comprising the following components in parts by mass:
antioxidant: 0.2-0.5 part;
a toughening agent: 0.5-10 parts;
anti-blocking agent: 0.3-30 parts;
fluorescent whitening agent: 0.01-0.05 part;
antistatic agent: 0.5-2 parts.
4. The elastic material according to claim 3, wherein:
the antioxidant is antioxidant 1010 or antioxidant 168;
the anti-blocking agent is calcium carbonate;
the fluorescent whitening agent is OB;
the antistatic agent is JK-23.
5. Electrodialysis plate frame, characterized in that it is made of the elastic material according to any of claims 1-4, comprising:
the sealing device comprises a substrate, a sealing cover and a sealing cover, wherein one side surface of the substrate is provided with a plurality of elastic sealing convex parts, and the other side surface of the substrate is a smooth plane; the height of each elastic sealing convex part is h, and the vertical distance between every two adjacent elastic sealing convex parts is d; h/d =1/50-1/5.
6. Electrodialysis plate frame according to claim 5, characterized in that:
the Shore C hardness of the elastic sealing convex part and the Shore C hardness of the base plate are both 85-95A.
7. Electrodialysis plate frame according to claim 5, characterized in that:
h/d＝1/20-1/10；
h＝0.03-0.1mm；
the thickness of the substrate is 0.5-3mm.
8. Electrodialysis plate frame according to claim 5, characterized in that:
the elastic sealing convex part and the base plate are integrally extruded and molded.
9. Electrodialysis plate frame according to claim 5, characterized in that:
the cross section of the elastic sealing convex part is rectangular, triangular, arc-shaped or trapezoidal;
the plurality of sealing convex parts are in one or two of a straight line shape or a folded line shape and are mutually crossed.
10. Electrodialysis baffle, its characterized in that:
comprises an electrodialysis plate frame, a water distribution flow channel, a separation net and a liquid guide hole of any one of claims 5 to 9; a cavity is formed in the middle of the substrate, and the separation net is arranged in the cavity;
both ends of the substrate are provided with liquid guide holes;
the water distribution channel is communicated with the cavity and part of the liquid guide holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210933059.0A CN115286866A (en) | 2022-08-04 | 2022-08-04 | Elastic material, electrodialysis plate frame and electrodialysis partition plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210933059.0A CN115286866A (en) | 2022-08-04 | 2022-08-04 | Elastic material, electrodialysis plate frame and electrodialysis partition plate |
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| CN115286866A true CN115286866A (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210933059.0A Pending CN115286866A (en) | 2022-08-04 | 2022-08-04 | Elastic material, electrodialysis plate frame and electrodialysis partition plate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921303A (en) * | 2012-11-19 | 2013-02-13 | 杭州水处理技术研究开发中心有限公司 | Electrodialysis partition board with potted line on surface |
| CN108117695A (en) * | 2017-12-29 | 2018-06-05 | 湖南普发环境科技有限公司 | A kind of antiseepage film repaired for liner overturning and preparation method thereof |
| CN111871214A (en) * | 2020-08-07 | 2020-11-03 | 厦门安力克膜科技有限公司 | Anti-leakage electrodialysis water distribution flow channel and partition plate thereof |
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2022
- 2022-08-04 CN CN202210933059.0A patent/CN115286866A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921303A (en) * | 2012-11-19 | 2013-02-13 | 杭州水处理技术研究开发中心有限公司 | Electrodialysis partition board with potted line on surface |
| CN108117695A (en) * | 2017-12-29 | 2018-06-05 | 湖南普发环境科技有限公司 | A kind of antiseepage film repaired for liner overturning and preparation method thereof |
| CN111871214A (en) * | 2020-08-07 | 2020-11-03 | 厦门安力克膜科技有限公司 | Anti-leakage electrodialysis water distribution flow channel and partition plate thereof |
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