CN104215751B - A kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA - Google Patents
A kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA Download PDFInfo
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- CN104215751B CN104215751B CN201410272328.9A CN201410272328A CN104215751B CN 104215751 B CN104215751 B CN 104215751B CN 201410272328 A CN201410272328 A CN 201410272328A CN 104215751 B CN104215751 B CN 104215751B
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- ion exchange
- exchange resin
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- coating
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Abstract
The present invention is specifically related to a kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA.Losing efficacy when use arrives to a certain degree of ion exchange resin, is difficult to simply judge whether ion exchange resin lost efficacy for user, rule of thumb or set time replacing, thus can only affect result of use.The present invention proposes the degradability and biocompatibility that utilize PLA, use PLA to make the coating of ion exchange resin, carry out the inefficacy of indication ion exchange resin.Technical scheme: 1) out-of-service time of institute's spent ion exchange resin under metric works environment.2) prepare polylactic acid membrane according to the processing of this time, polylactic acid membrane is made pipe shape, and wrapped resin particle also puts into water pipeline.3) water purification module in use for some time, when finding that obvious crack or hole appear in PLA envelope membrane surface, namely illustrates that ion exchange resin lost efficacy.
Description
Technical field
The invention belongs to the technical field such as material and chemical industry, be specifically related to a kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA.
Background technology
Ion exchange resin has had development for many years and use course as important water body purifying material, is still the research in Water warfare field at present and produces focus.As conventional family and industrial water-purifying material, a major issue of ion exchange resin is Indication of Losing Efficacy in actual use.When ion exchange resin use arrives to a certain degree, entrained most of ion can exchange with water body, now just no longer includes result of use, needs, through regeneration process, could come into operation.Judge that the inefficacy of ion exchange resin has a variety of professional method, but for user, especially the user of Household water purifying equipment, be difficult to simply judge whether ion exchange resin lost efficacy in routine use, can only rule of thumb or the set time change, thus affect result of use.
Summary of the invention
The present invention proposes the coating using PLA to make purifier ion exchange resin, carry out the inefficacy of indication ion exchange resin.Its object is to the degradability and the biocompatibility that utilize PLA, solve the above problems:
1) PLA is automatically degradable under water environment.The film product that PLA makes there will be macroscopic hole in degradation process, bursts apart.Ion exchange resin in the process contacted with water, its failure degree and being proportionate property of time, and simultaneously the degradation speed of PLA also with being proportionate property of time.The polylactic acid membrane of the respective thickness therefore made according to the working time of ion exchange resin, put together with exchange of particles resin, when being under same condition of work, can while exchange of particles efficiency lost resin, also because naked eyes appear in degraded, observable outward appearance changes polylactic acid membrane, as hole, burst apart in gap, both behavior all and water quality, water amount, whether there is approximate funtcional relationship in working environments etc., so just can, according to the observation form of PLA, indicate exchange of particles resin to lose efficacy.
2) PLA is as bio-based resin, it is the material of generally acknowledged environment-friendly and green, there is good biocompatibility, the product of its degraded is lactic acid, the further catabolite of lactic acid is carbon dioxide and water, these are all the materials not having food security hidden danger, and therefore PLA can be used on drinkable water cleaning equipment.
Granular ion exchange resin is used in general purifier, and granular ion exchange resin is stacked in water pipeline, the present invention is directed to resin particle and devise a kind of PLA coating, for accompanying drawing 1 explanation, in columniform water pipeline, PLA coating is made into a cylindrical pipe (1), by ion-exchange resin particles (2) parcel wherein, again by 1,2 entirety are positioned in water pipeline.
Note the geometric configuration according to water pipeline, the PLA coating that the present invention proposes can be made into corresponding suitable shape, and form and the principle of work of its parcel ion exchange resin are constant, do not limit to and the cylindrical shape shown in accompanying drawing one.
implementation of the present invention:
The present invention for achieving the above object, by the following technical solutions:
1) out-of-service time of institute's spent ion exchange resin under metric works environment.
2) the pure PLA between molecular weight 30000-300000 or modified polylactic resin is selected, according to request for utilization, the film of thickness 1mm – 10mm is prepared into according to the requirement processing of working time (i.e. the out-of-service time of ion exchange resin), and the crystallinity controlling PLA is 0%-80%, (, experiment shows, molecular weight is larger, film is thicker, occurs that hole and the time of bursting apart are more of a specified duration; Crystallinity is higher, and degradation speed is slower).
3) polylactic acid membrane is made required pipe shape, put into water pipeline, in PLA coating, place ion exchange resin.
4) PLA is as matrix resin, can add modifier, to change its physicochemical property, improves result of use.
Accompanying drawing explanation
Fig. 1 is the structural representation of ion exchange resin Indication of Losing Efficacy coating prepared by PLA.
Embodiment
The specific embodiment of the present invention is described in detail below in conjunction with preferred embodiment.
Embodiment one:
1) under metric works environment, the out-of-service time of certain ion exchange resin used is about three months.(according to water quality and water amount, the concrete time is distinguished to some extent)
2) select the pure polylactic resin of molecular weight 100000, processing is prepared into the film of thickness 3mm, and the crystallinity controlling PLA is <5% (amorphous state PLA).Experiment shows, the polylactic acid membrane of this technical indicator can at about three months because degraded occurs bursting apart and hole in surface.(according to water quality and water amount, the concrete time is distinguished to some extent)
3) polylactic acid membrane is made the cylindricity pipeline of external diameter 9.8cm, put into the cylindrical water pipeline of internal diameter 10cm, and place ion exchange resin in PLA coating.
4) this water purification module in use for some time, when finding that obvious crack or hole appear in PLA envelope membrane surface, namely illustrating that ion exchange resin lost efficacy, overallly should take out and changing.
5) note not necessarily three months service time of this water purification module, according to water quality, water amount, and working environment, its service time or length or short, the therefore inefficacy of ion exchange resin, should be indicated by the degraded of PLA and judge, instead of the fixed standard time.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to structure of the present invention.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical scheme of the present invention.
Claims (3)
1. the ion exchange resin Indication of Losing Efficacy coating prepared by PLA, it is characterized in that when this PLA coating because degraded, there is the observable metamorphosis of naked eyes, i.e. surface crack, during hole, namely illustrates that the ion exchange resin that it wraps up lost efficacy, the polylactic acid molecule amount selected is between 30000-300000, thickness is 1mm – 10mm, and crystallinity is 0%-80%, and the out-of-service time of coating can be controlled by above three technical indicators.
2. a kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA as claimed in claim 1, it is characterized in that the geometric configuration according to water pipeline, PLA coating can be made into corresponding suitable pipe shape, and form and the principle of work of its parcel ion exchange resin are constant.
3. a kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA as claimed in claim 1, it is characterized in that PLA is as matrix resin, can add modifier to change its physicochemical property, form and the principle of work of its parcel ion exchange resin are constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272328.9A CN104215751B (en) | 2014-06-19 | 2014-06-19 | A kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272328.9A CN104215751B (en) | 2014-06-19 | 2014-06-19 | A kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104215751A CN104215751A (en) | 2014-12-17 |
| CN104215751B true CN104215751B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410272328.9A Expired - Fee Related CN104215751B (en) | 2014-06-19 | 2014-06-19 | A kind of ion exchange resin Indication of Losing Efficacy coating prepared by PLA |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278937Y (en) * | 1996-05-08 | 1998-04-15 | 东北电力学院电子技术工程研究所 | Sensor for fail monitor of cation exchanger |
| JP2002071874A (en) * | 2000-08-28 | 2002-03-12 | Hitachi Ltd | Boiling water type nuclear power generation plant, and method for measuring polymer impurity of degraded ion exchange resin |
| CN1382108A (en) * | 1999-08-25 | 2002-11-27 | 沃特维森斯国际公司 | Microbiological water filter |
| JP4264702B2 (en) * | 2002-12-11 | 2009-05-20 | 栗田工業株式会社 | Ion exchange resin ion composition measurement method |
| CN101952210A (en) * | 2007-12-31 | 2011-01-19 | 3M创新有限公司 | Filtering flow goods and production and preparation method thereof |
-
2014
- 2014-06-19 CN CN201410272328.9A patent/CN104215751B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278937Y (en) * | 1996-05-08 | 1998-04-15 | 东北电力学院电子技术工程研究所 | Sensor for fail monitor of cation exchanger |
| CN1382108A (en) * | 1999-08-25 | 2002-11-27 | 沃特维森斯国际公司 | Microbiological water filter |
| JP2002071874A (en) * | 2000-08-28 | 2002-03-12 | Hitachi Ltd | Boiling water type nuclear power generation plant, and method for measuring polymer impurity of degraded ion exchange resin |
| JP4264702B2 (en) * | 2002-12-11 | 2009-05-20 | 栗田工業株式会社 | Ion exchange resin ion composition measurement method |
| CN101952210A (en) * | 2007-12-31 | 2011-01-19 | 3M创新有限公司 | Filtering flow goods and production and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN104215751A (en) | 2014-12-17 |
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Granted publication date: 20160106 Termination date: 20170619 |