CN102086291B - Preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent - Google Patents
Preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent Download PDFInfo
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- CN102086291B CN102086291B CN2009102000556A CN200910200055A CN102086291B CN 102086291 B CN102086291 B CN 102086291B CN 2009102000556 A CN2009102000556 A CN 2009102000556A CN 200910200055 A CN200910200055 A CN 200910200055A CN 102086291 B CN102086291 B CN 102086291B
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- sodium benzoate
- polystyrene
- microcapsule
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- sea anti
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Abstract
The invention discloses the preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent, which relates to sea anti-fouling coating. The invention also provides a method for embedding sea anti-fouling agent by using the polystyrene microcapsules. The invention adopts polyvinyl alcohol, polystyrene and the sodium benzoate sea anti-fouling agent, and is characterized in that: the polyvinyl alcohol serving as a dispersant is dissolved in deionized water, and the solution is stirred and heated to 60 to 70 DEG C; the polystyrene and the sodium benzoate sea anti-fouling agent are dissolved in an organic solvent and the liquid of the organic phase is slowly dripped into the solution in a dispersed phase to form an oil/water dispersion system; and through the volatilization of the organic solvent in the oil/water dispersion system, the microcapsule structure taking the sodium benzoate as a core material and styrene as wall material is formed. The invention is applicable to sea anti-fouling coating.
Description
Technical field
The present invention relates to the preparation of marine antifouling coating.
Background technology
Engineering structures such as the naval vessel in the ocean, net cage can become the carrier that sea life adhere to, grow, and this phenomenon is called biodeterioration.Biodeterioration can make the naval vessel speed of a ship or plane reduce, and increases fuel consumption, and the housing corrosion is quickened; Stained net cage causes the financial loss of aquaculture.Prevention biodeterioration method commonly used is to use antifouling paint; The effect of marine antifouling coating is relevant with the release rate of stain control agent in the coating; A lot of coating are respond well at the use initial stage; But can not continue, make the body surface scribble antifouling paint again after immersion after a while, seriously stained by sea life again.So long-acting release how to control stain control agent is crucial.The U.S., Japan are all in the research of actively being devoted to be applied to controlled release technologies marine antifouling coating; U.S.'s Oceanographic Office carries out the sustained release research of antifouling paint since early 1990s; They as the controlled release release vehicle, carry out embedding to medicines such as tsiklomitsins with the copper facing microtubule; Rabinovici R etc. are with liposomic microcapsule embedding protoheme; At present, domestic " violent release " problem that also need study stain control agent in the slow release method solution marine antifouling coating.
Summary of the invention
The purpose of this invention is to provide the method that a kind of PS microcapsule carry out embedding to nontoxic marine antifoulant Sodium Benzoate.
Technical scheme of the present invention adopts Z 150PH (PVA), PS (PS) and stain control agent Sodium Benzoate (NaB), it is characterized in that Z 150PH (PVA) is dissolved in the deionized water as dispersion agent, stirs and be warmed up to 60-70 ℃; PS (PS) and stain control agent Sodium Benzoate (NaB) are dissolved in the organic solvent; Organic phase liquid slowly is added drop-wise in the middle of the disperse phase solution; Form O/W (oil/water) dispersion system; Constantly volatilize through organic solvent in O/W (oil/water) dispersion system, forming gradually with the Sodium Benzoate is core, and vinylbenzene is that the microcapsule structure of wall material obtains the microcapsule grain size about the 0.8-20 micron.
Technique effect of the present invention calculates the massfraction 18.60%-26.40% of Sodium Benzoate contained in the PS microcapsule through the content of the Sodium Benzoate in the sample is measured; Show that through the Zeiss microscopic examination microcapsule are uniformly dispersed in coating.Utilize calibration curve method that the accumulative total burst size of Sodium Benzoate in the urethane antifouling paint is calculated; Show that the Sodium Benzoate that does not pass through microcapsule embedded processing is very fast at two days initial release rate; The phenomenon of " violent release " has just taken place, and almost no longer more later on Sodium Benzoate discharged again at 120 days, yet the data of having used the PS microcapsule to carry out the Sodium Benzoate polyurethane coating sample of embedding show; " violent release " phenomenon is resolved; Initial release rate slows down, and still constantly has an amount of Sodium Benzoate to discharge later, and show good fungistatic effect at 120 days.So use the microcapsule slow release method to solve existing " violent release " problem with stain control agent in the marine antifouling coating; Stain control agent is slowly discharged; Thereby reach the effect of long-acting and anti-fouling; This method also is applicable to other marine antifoulants and anti-adhesive agent, and is significant to studying long-acting ocean novel antifouling coating.
Embodiment
Disperse phase is that Z 150PH (PVA) is dissolved in the deionized water as dispersion agent in the preparation method of the present invention, stirs and be warmed up to 60-70 ℃; Or sodium lauryl sulphate is dissolved in prepares in the deionized water;
Organic phase forms by PS (PS) and stain control agent Sodium Benzoate (NaB) are dissolved in organic solvent dichloromethane or the trichloromethane;
Then organic phase liquid slowly is added drop-wise in the middle of the disperse phase solution, forms O/W (oil/water) dispersion system, and drip 2-3 and drip n-Octanol, the stirring velocity of control 800-1200r/min; Stir 4-5 hour with solvent evaporates; Can obtain being loaded with the PS microcapsule of stain control agent; Treat behind the microcapsule wall material curing molding its separating and filtering, with deionized water wash 3 times to remove the solvents of remained on surface, then in 25-27 ℃ of vacuum-drying 3-4 hour.Obtain the PS drug-loading microcapsule.
Claims (2)
1. Z 150PH, PS and stain control agent Sodium Benzoate are adopted in the preparation of the PS slow-release microcapsule of embedding marine antifoulant Sodium Benzoate, it is characterized in that Z 150PH is dissolved in the deionized water as dispersion agent, stir and be warmed up to 60-70 ℃; PS and stain control agent Sodium Benzoate are dissolved in methylene dichloride or the trichloromethane; Organic phase liquid slowly is added drop-wise in the middle of the disperse phase solution; Form oil/aqueous dispersion; Constantly volatilize through organic solvent in oil/aqueous dispersion, forming gradually with the Sodium Benzoate is core, and PS is the microcapsule structure of wall material.
2. the preparation of the PS slow-release microcapsule of embedding marine antifoulant Sodium Benzoate according to claim 1; It is characterized in that behind the microcapsule wall material curing molding its separating and filtering; Solvent with deionized water wash removal remained on surface obtained the PS drug-loading microcapsule then in 25-27 ℃ of vacuum-drying 3-4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102000556A CN102086291B (en) | 2009-12-07 | 2009-12-07 | Preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102000556A CN102086291B (en) | 2009-12-07 | 2009-12-07 | Preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102086291A CN102086291A (en) | 2011-06-08 |
| CN102086291B true CN102086291B (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102000556A Expired - Fee Related CN102086291B (en) | 2009-12-07 | 2009-12-07 | Preparation of polystyrene sustained-release microcapsules for embedding sodium benzoate sea anti-fouling agent |
Country Status (1)
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| CN (1) | CN102086291B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609029A (en) * | 2018-12-05 | 2019-04-12 | 杭州师范大学 | It is a kind of with the low surface energy antifouling coating for seas and preparation method thereof for delaying low molecular weight lubricant release action |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5651976A (en) * | 1993-06-17 | 1997-07-29 | The United States Of America As Represented By The Secretary Of The Navy | Controlled release of active agents using inorganic tubules |
| CN101362067A (en) * | 2007-08-06 | 2009-02-11 | 天津科技大学 | Microcapsule preparation method |
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2009
- 2009-12-07 CN CN2009102000556A patent/CN102086291B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5651976A (en) * | 1993-06-17 | 1997-07-29 | The United States Of America As Represented By The Secretary Of The Navy | Controlled release of active agents using inorganic tubules |
| CN101362067A (en) * | 2007-08-06 | 2009-02-11 | 天津科技大学 | Microcapsule preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 张明祖等.W/O/W法制聚苯乙烯微胶囊的研究.《苏州大学学报（自然科学）》.1996,第12卷(第4期),第78-82页. * |
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| CN102086291A (en) | 2011-06-08 |
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