CN109796796A - A kind of low-temperature water-soluble close membrane and its preparation and application - Google Patents
A kind of low-temperature water-soluble close membrane and its preparation and application Download PDFInfo
- Publication number
- CN109796796A CN109796796A CN201910073072.1A CN201910073072A CN109796796A CN 109796796 A CN109796796 A CN 109796796A CN 201910073072 A CN201910073072 A CN 201910073072A CN 109796796 A CN109796796 A CN 109796796A
- Authority
- CN
- China
- Prior art keywords
- close membrane
- low
- temperature water
- soluble
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Detergent Compositions (AREA)
Abstract
The present invention provides a kind of low-temperature water-soluble close membrane, belongs to radioactive pollution metal surface decontamination technical field.The close membrane includes each component of following mass parts: 91.0~102.5 parts of base-material, 1.5~2.0 parts of plasticizer and 0.5~1.0 part of surfactant, the base-material is the mixture of polyvinyl alcohol (PVA), acrylamide and sodium hydroxide, the plasticizer is glycerine, and the surfactant is lauryl sodium sulfate.The present invention also provides the preparation method and application of the close membrane.It is also rapidly dissolvable in water-soluble closed film even 5~10 DEG C of cold water of the present invention, film-forming process is simple, it is easy to operate, waste yield is few, it is a kind of close membrane of extremely simple and easy to do metal surface radioactive pollution prevented, the random diffusion of the radioaerosol of metal surface attachment can be efficiently avoided, provides a kind of new technological means for the decontamination processing of the radioactive pollution of metal surface in Nuclear installation decommissioning project.
Description
Technical field
The invention belongs in radioactive pollution metal surface decontamination technical field, specially a kind of low-temperature water-soluble close membrane
And its it prepares and applies.
Background technique
During the elimination of nuclear facilities, it will generate largely by the metallic facility of radioactive pollution and component.Wherein one
It is horizontal that partial contamination metal can reach cleaning solution control by the methods of wiping decontamination, peelable film decontamination, but still has partial contamination
Metal especially pollutes metallic conduit, glove box etc. and decontamination processing cannot need at the scene to cleaning solution control level using machinery
Polishing decontamination, slot type electrolytic decontaminating or resettlement transfer processing.
During the retired subsequent processing of radioactive pollution metal or resettlement transfer processing, it is necessary to prevent radioactive pollution from expanding
It dissipates.Radioaerosol is broadcasted sowing in order to prevent, be can be used and is brushed close membrane (peelable film or oil at Metal surface contamination position
Paint) method.Since the aging of peelable film, peeling phenomenon are more serious, painting closed subsequent processing, (such as slot type electrolysis is gone
It is dirty) it is more difficult, the practical application of both methods is badly in need of developing novel radioactive pollution metal closing by great limitation
Technology, so that the metal surface of pollution is more easy to handle and reaches cleaning solution control level.
Summary of the invention
It is an object of the invention to it is existing to radioactive pollution metal close membrane there are aiming at the problem that, propose a kind of low temperature
Water-soluble closed film and its preparation and application.Inventive closure film can solve existing close membrane aging and fall off serious problems, envelope
It is good to close effect, i.e. rapidly dissolvable in 5~10 DEG C of cold water, process is simple, and waste yield is few.
The object of the invention is achieved through the following technical solutions:
A kind of low-temperature water-soluble close membrane, the close membrane include each component of following mass parts: base-material 91.0~102.5
Part, 1.5~2.0 parts of plasticizer and 0.5~1.0 part of surfactant, the base-material are polyvinyl alcohol (PVA), acrylamide
And the mixture of sodium hydroxide, the plasticizer are glycerine, the surfactant is lauryl sodium sulfate.
In the present invention in water-soluble closed film, polyvinyl alcohol (PVA) has good water-soluble and solvent resistance, can shape
At smooth surface close membrane, filming performance and mechanical strength are good.Plasticizer selection and the preferable glycerine of PVA compatibility
(glycerol) reduces glass transition temperature, influences film formation time, and prevents from hardening under low humidity weather and embrittlement, improves the aging of film
Performance.Surfactant sodium dodecyl base sodium sulphate improves spraying property.
Further, in terms of close membrane mass fraction, the polyvinyl alcohol (PVA) is 65.0~70.0 parts, and acrylamide is
10.0~12.5 parts, sodium hydroxide is 16.0~20.0 parts.
Further, the close membrane further includes the defoaming agent that mass fraction is 0.5~1.0 part, and defoaming agent is tricresyl phosphate
Butyl ester (TBP) or dimethyl silicone polymer.
Further, the degree of polymerization of the polyvinyl alcohol (PVA) is 102~104, saponification degree be 85%~90%.
A kind of preparation method of low-temperature water-soluble close membrane, comprising the following steps:
1) PVA is added into water, heat preservation is until solution no longer contains small after so that its swelling dispersion, heating is accelerated dissolution
Grain, obtains homogeneous PVA solution；
2) acrylamide is added in Xiang Shangshu PVA solution, stirs evenly, then add sodium hydroxide solution, plasticizer
Viscosity solution is obtained with surfactant；
3) above-mentioned viscosity solution is applied on galvanized iron dermatotome, it is made sufficiently to form a film and sufficiently dry.
Further, in step 1), it is 80~90 DEG C that the heating, which accelerates solution temperature,；The soaking time is 5~6h.
Further, in step 2), countless minute bubbles can be generated by stirring evenly, and add hydroxide after needing to be added defoaming agent
Sodium solution.
Further, the drying temperature is 20~30 DEG C, and the time is 2~3h.
A kind of application of low-temperature water-soluble close membrane, the close membrane are preventing the application in radioactive pollution diffusion.
Further, application of the close membrane in the spraying Seal treatment on radioactive pollution metal surface.After preheating
Coating materials direct spraying or brush in contaminated metal surface, through 5~6h it is dry after, that is, can reach and avoid Metal surface contamination
The purpose that object is arbitrarily spread.
Compared with prior art, the invention has the following advantages:
Also rapidly dissolvable in water-soluble closed film even 5~10 DEG C of cold water of the present invention, film-forming process is simple, operation letter
Just, waste yield is few, is a kind of close membrane of extremely simple and easy to do metal surface radioactive pollution prevented, more effectively keeps away
The random diffusion for having exempted from the radioaerosol of metal surface attachment has protection well to make surrounding enviroment and operator
With providing one kind for the development that the decontamination to retired nuclear facilities in Nuclear installation decommissioning project works effectively prevents radioactivity
The new technique approach of contamination.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The preparation process of the present embodiment low-temperature water-soluble close membrane is as follows:
1, the preparation of PVA solution
10g PVA is slowly added under stirring into 100ml water, so that it is sufficiently swollen, dispersed in water and evolution volatility
Substance；Then it is warming up to 85 DEG C of acceleration dissolution, and is kept the temperature, until solution no longer contains molecule, it is molten to obtain homogeneous PVA
Liquid.
2, the preparation of viscosity solution
0.17g acrylamide is added into the PVA solution of above-mentioned preparation, stirs evenly, generates minute bubbles, adds 5.5ml
TBP, stirring add 0.3ml sodium hydroxide solution, 0.05ml glycerine and 0.11g surfactant that concentration is 25%
Obtain viscosity solution.
3, the preparation of water-soluble closed film
Resulting viscosity solution is applied on galvanized iron dermatotome, so that it is formed a film and sufficiently dries 2h at a temperature of 25 DEG C.
Low-temperature water-soluble close membrane each component manufactured in the present embodiment and content are as follows:
Polyethylene glycol (PVA): 66.15 parts；Acrylamide: 11.25 parts；Sodium hydroxid: 19.85 parts；Glycerine: 1.85
Part；TBP:0.30 parts；Sodium lauryl sulfate: 0.60 part.
Comparative example 1
The concentration and dosage that this comparative example has investigated sodium hydroxide are on film forming and the deliquescent influence of film, in embodiment 1
Preparation on the basis of the concentration and dosage of sodium hydroxide are adjusted, as a result as shown in the following table 1 and 2, the dissolution of film in following table
It is carried out under identical temperature (5 DEG C or 10 DEG C).
Influence of the concentration of the different sodium hydroxide solutions of table 1 to film
As shown in Table 1, when sodium hydroxid concentration is lower, dissolution phenomena does not occur for film, when concentration is 25%, finds film
Gradually until slowly disappearing, film forming and water solubility are preferable for dissolution.And when sodium hydroxid concentration reduces or increases, film forming
Property and dissolubility decline.Therefore, the naoh concentration 15~30% that film forming can be made to dissolve, optium concentration 25%.
Influence of the dosage of 2 sodium hydroxide solution of table to film
As shown in Table 2, when sodium hydroxide solution concentration is 25%, when dosage is excessive, the viscosity of system becomes larger, and almost forms
Grumeleuse, and film forming is bad, it is water-soluble also bad, and when dosage is very few, the water solubility of film is also poor.Therefore, be added dropwise 0.25~
It can reach film forming and dissolubility good film when 0.30ml.
Comparative example 2
This comparative example investigates the dosage of acrylamide to film forming and the deliquescent influence of film, prepares base in embodiment 1
The dosage of acrylamide is adjusted on plinth, as a result as shown in table 3 below, in following table film be dissolved in identical temperature (5 DEG C or
10 DEG C) under carry out.
Influence of the 3 acrylamide dosage of table to film
When acrylamide dosage is 0.16~0.17g, it can find that the inner membrance of 3~5min just dissolves rapidly, and at
Film property is preferable.
The measurement of close membrane water solubility
It takes the film square that length and width prepared in the above embodiments are 1cm off, is placed in the beaker of the 500ml equipped with suitable quantity of water
In, the solution rate of film, two temperature thin-films about need 3~5min complete when observation water temperature is respectively 5 DEG C and 10 DEG C
Dissolution.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of low-temperature water-soluble close membrane, which is characterized in that the close membrane includes each component of following mass parts: base-material
91.0~102.5 parts, 1.5~2.0 parts of plasticizer and 0.5~1.0 part of surfactant, the base-material are polyvinyl alcohol
(PVA), the mixture of acrylamide and sodium hydroxide, the plasticizer are glycerine, and the surfactant is dodecane
Base sodium sulphate.
2. a kind of low-temperature water-soluble close membrane as described in claim 1, which is characterized in that described in terms of close membrane mass fraction
Polyvinyl alcohol (PVA) is 65.0~70.0 parts, and acrylamide is 10.0~12.5 parts, and sodium hydroxide is 16.0~20.0 parts.
3. a kind of low-temperature water-soluble close membrane as described in claim 1, which is characterized in that the close membrane further includes mass fraction
For 0.5~1.0 part of defoaming agent, and defoaming agent is tributyl phosphate (TBP) or dimethyl silicone polymer.
4. a kind of low-temperature water-soluble close membrane as described in claim 1, which is characterized in that the polymerization of the polyvinyl alcohol (PVA)
Degree is 102~104, saponification degree be 85%~90%.
5. a kind of preparation method of low-temperature water-soluble close membrane as described in any one of Claims 1-4, which is characterized in that including
Following steps:
1) PVA is added into water, makes its swelling dispersion, heating accelerates after dissolution heat preservation no longer to contain molecule until solution,
Obtain homogeneous PVA solution；
2) acrylamide is added in Xiang Shangshu PVA solution, stirs evenly, then add sodium hydroxide solution, plasticizer and table
Face activating agent obtains viscosity solution；
3) above-mentioned viscosity solution is applied on galvanized iron dermatotome, it is made sufficiently to form a film and sufficiently dry.
6. a kind of preparation method of low-temperature water-soluble close membrane as claimed in claim 5, which is characterized in that described in step 1)
It is 80~90 DEG C that heating, which accelerates solution temperature,；The soaking time is 5~6h.
7. a kind of preparation method of low-temperature water-soluble close membrane as claimed in claim 5, which is characterized in that in step 2), stirring
Countless minute bubbles can be uniformly generated, add sodium hydroxide solution after needing to be added defoaming agent.
8. a kind of preparation method of low-temperature water-soluble close membrane as claimed in claim 5, which is characterized in that the drying temperature is
20~30 DEG C, the time is 2~3h.
9. a kind of application of low-temperature water-soluble close membrane as described in any one of Claims 1-4, which is characterized in that the closing
Film is preventing the application in radioactive pollution diffusion.
10. a kind of application of low-temperature water-soluble close membrane as claimed in claim 9, which is characterized in that the close membrane is being radiated
Application in the spraying Seal treatment of contact scar metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073072.1A CN109796796A (en) | 2019-01-25 | 2019-01-25 | A kind of low-temperature water-soluble close membrane and its preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073072.1A CN109796796A (en) | 2019-01-25 | 2019-01-25 | A kind of low-temperature water-soluble close membrane and its preparation and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109796796A true CN109796796A (en) | 2019-05-24 |
Family
ID=66560197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910073072.1A Pending CN109796796A (en) | 2019-01-25 | 2019-01-25 | A kind of low-temperature water-soluble close membrane and its preparation and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109796796A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363628A (en) * | 2002-01-16 | 2002-08-14 | 郝喜海 | Method for regulating dissolving speed of water-soluble film |
| CN102898668A (en) * | 2012-10-13 | 2013-01-30 | 华南理工大学 | Water soluble preservative film for fruits and vegetables and preparation method of preservative film |
| US20160089875A1 (en) * | 2014-09-30 | 2016-03-31 | Xerox Corporation | Compositions and use of compositions in printing processes |
| CN105504616A (en) * | 2015-12-25 | 2016-04-20 | 佛山市博维环保材料有限公司 | Water-soluble thin film with good compatibility and preparation method thereof |
| CN106589723A (en) * | 2016-11-29 | 2017-04-26 | 张家口洁源环保塑胶有限公司 | Middle-temperature water-soluble film, preparing method and refined filtration equipment |
| CN106867333A (en) * | 2017-02-16 | 2017-06-20 | 吕健勇 | One kind masking protection liquid and preparation method and application |
-
2019
- 2019-01-25 CN CN201910073072.1A patent/CN109796796A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363628A (en) * | 2002-01-16 | 2002-08-14 | 郝喜海 | Method for regulating dissolving speed of water-soluble film |
| CN102898668A (en) * | 2012-10-13 | 2013-01-30 | 华南理工大学 | Water soluble preservative film for fruits and vegetables and preparation method of preservative film |
| US20160089875A1 (en) * | 2014-09-30 | 2016-03-31 | Xerox Corporation | Compositions and use of compositions in printing processes |
| CN105504616A (en) * | 2015-12-25 | 2016-04-20 | 佛山市博维环保材料有限公司 | Water-soluble thin film with good compatibility and preparation method thereof |
| CN106589723A (en) * | 2016-11-29 | 2017-04-26 | 张家口洁源环保塑胶有限公司 | Middle-temperature water-soluble film, preparing method and refined filtration equipment |
| CN106867333A (en) * | 2017-02-16 | 2017-06-20 | 吕健勇 | One kind masking protection liquid and preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| 闻荻江等: "水速溶性聚乙烯醇制备研究", 《苏州大学学报(自然科学版)》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chelazzi et al. | Microemulsions, micelles, and functional gels: how colloids and soft matter preserve works of art | |
| US4647480A (en) | Use of additive in aqueous cure of autodeposited coatings | |
| CA2158990C (en) | Methods and fluids for removal of contaminants from surfaces | |
| Gossard et al. | Gels, coatings and foams for radioactive surface decontamination: State of the art and challenges for the nuclear industry | |
| JP2547456B2 (en) | Treatment method for self-deposited coating | |
| Kojima et al. | Development of high performance, waterborne coatings. Part I: emulsification of epoxy resin | |
| CN113480896A (en) | Polyvinyl alcohol strippable membrane radioactive detergent and use method thereof | |
| CN111909559A (en) | Radioactive surface strippable detergent and preparation method thereof | |
| CN109796796A (en) | A kind of low-temperature water-soluble close membrane and its preparation and application | |
| JP2597713B2 (en) | Aqueous composition for protecting coating film and method for producing the same | |
| Sun et al. | Measurement of reversible rate of conservation materials based on gel cleaning approach | |
| DE3446931C2 (en) | Method for decontaminating the surface of an object | |
| US4562098A (en) | Water or steam cure of autodeposited resin coatings on metallic substrates | |
| RU2638162C1 (en) | Composition for dust suppression and containment of combustion products after fire extinguishing with radiation factor | |
| CN101792621B (en) | Preparation method of non-corrosive metal paint remover | |
| KR900701159A (en) | Bactericidal protective film for heat exchange coil and its coating method | |
| Baker et al. | Cleaning by surface displacement of water and oils | |
| CN108344667B (en) | Oil stain stripping test method | |
| CN104371415B (en) | A kind of efficient paint remover and its preparation method | |
| JPS63221179A (en) | Release agent composition for resin wax film | |
| US3455737A (en) | Method of removing a coating | |
| Jung et al. | Chemical Gel for Surface Decontamination | |
| CA2375638A1 (en) | Detergent composition for petroleum refining apparatus | |
| CN115747816B (en) | Application of glycol ether in cleaning of active metal, non-water-based cleaning agent and cleaning method of active metal | |
| RU2836302C1 (en) | Detergent dielectric liquid for cleaning electrical equipment without disconnection from power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190524 |