CN105199035A - Acrylic resin with high water absorption - Google Patents
Acrylic resin with high water absorption Download PDFInfo
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- CN105199035A CN105199035A CN201510654681.8A CN201510654681A CN105199035A CN 105199035 A CN105199035 A CN 105199035A CN 201510654681 A CN201510654681 A CN 201510654681A CN 105199035 A CN105199035 A CN 105199035A
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- acrylic resin
- hydroscopicity
- preparation
- high water
- water absorption
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Abstract
The invention discloses acrylic resin with high water absorption. The resin is prepared from acrylic acid gamma-methacryloxypropyltrimethoxysilane. The acrylic resin is prepared by using a preparation method comprising the step of carrying out inverse suspension polymerization on gamma-methacryloxypropyltrimethoxysilane (MPS) and acrylic acid by taking cyclohexane and water as solvents under the action of dispersing agents Span-80 and Tween-80. The preparation method is simple in process, low in cost and convenient to industrially popularize and apply; and the material has high water absorption and can be modified by using silica gel, glass and the like to be further used for preparing a composite with high water absorption.
Description
Technical field
The present invention relates to a kind of high-hydroscopicity acrylic resin, be specially the resin that vinylformic acid and γ-methacryloxypropyl trimethyl silane (MPS) copolymerization obtain.
Background technology
High water absorbency polymer refers to that a class Absorbable rod is equivalent to the compound of sole mass the hundreds of even moisture of thousands of times.By its raw material sources, high water absorbency polymer can be divided into three large series, and namely starch-grafted series, Mierocrystalline cellulose series and synthetic polymer are serial.Wherein acrylic acid or the like high water absorbency polymer is the class be most widely used.Typical acrylic acid or the like super absorbent polymer is lightly crosslinked and the acrylate of part neutralization, has high water-retaining capacity.After adding water, meeting water-swelling, make the whole aqueous solution have gelatination property, part 1g polymkeric substance can absorb water and reach more than 1000g.
At present in the international market, acrylic acid or the like high water absorbency polymer due to the function possessing excellent long-acting absorption and keep moisture not run off, and is widely used in the field such as sanitary product and paper nappy.In addition, due to social senilization, the rate of growth of adult diaper demand will be far longer than the speedup of baby diaper, therefore can estimate that its market requirement still can continue to increase.This has also promoted the further research and development of this kind of material.The R&D direction of current acrylic acid or the like high water absorbency polymer is mainly: 1) exploitation has the high-performance water-absorbing resin of high rate of water absorption and water absorbent rate concurrently; 2) exploitation has the high water absorption composite material of other performance concurrently; 3) the high-performance water-absorbing resin of degradable, environmental protection is developed.
Summary of the invention
The present invention has mainly prepared a kind of super absorbent resin containing silane group, and its preparation process is as follows:
In the there-necked flask that reflux exchanger and nitrogen ingress pipe are housed, add cyclohexane, dispersion agent Span-80, Tween-80 and γ-methacryloxypropyl trimethoxy silane (MPS) successively, fully stir, heat up 50 DEG C.Get another beaker, take a certain amount of vinylformic acid, neutralize with the sodium hydroxide solution prepared in advance, be cooled to room temperature and joined in there-necked flask and fully stir.Add Potassium Persulphate initiator solution, be warmed up to 70 DEG C, acutely react, produce with a large amount of bubble, after about five minutes, reaction terminates, and generates gummy white solid.
By product alcohol immersion one day, per half a day changes clothes once, and then use distilled water immersion three days, per half a day changes clothes once, the product freeze-drying after immersion.
The preparation of high-hydroscopicity acrylic resin of the present invention adopts repercussion suspension polymerization, and wherein Span-80 and Tween-80 is dispersion agent, and the vinylformic acid used is in advance through sodium hydroxide neutralization, and degree of neutralization is 75%.
In the preparation of high-hydroscopicity acrylic resin of the present invention, the ratio of the amount of substance of monomeric acrylic and MPS is 9: 1.
In the preparation of high-hydroscopicity acrylic resin of the present invention, total monomer is 20 ~ 50%.
In the preparation of high-hydroscopicity acrylic resin of the present invention, the amount of initiator is 0.5% of monomer total mass.
In the preparation of high-hydroscopicity acrylic resin of the present invention, the ratio of the quality of dispersion agent Span-80 and Tween-80 is 2: 1.
Super absorbent resin stable in properties prepared by the present invention, dissolves in dilute alkaline soln, and water-intake rate can reach 700 times.And due in structure containing silane group, hydrolysis can be there is and with the multiple material such as silica gel, glass generation bonding, preparation has the matrix material of high-hydroscopicity further.
Embodiment
The following examples can make the present invention of professional and technical personnel's comprehend, but do not limit the present invention in any way.
Embodiment 1:
In the there-necked flask that reflux exchanger and nitrogen ingress pipe are housed, add the γ-methacryloxypropyl trimethoxy silane (MPS) of Tween-80 and 2.22g of Span-80,0.18g of dispersion agent 20mL cyclohexane, 0.35g successively, abundant stirring, heats up 50 DEG C.Get another beaker, take the vinylformic acid of 5.78g, neutralize with the sodium hydroxide solution (sodium hydroxide of 2.51g is dissolved in 10mL water) prepared in advance, be cooled to room temperature and joined in there-necked flask and fully stir.Add the Potassium Persulphate initiator solution of 0.04g, be warmed up to 70 DEG C, acutely react, produce with a large amount of bubble, after about five minutes, reaction terminates, and generates gummy white solid.
By product alcohol immersion one day, per half a day changes clothes once, and then use distilled water immersion three days, per half a day changes clothes once, the product freeze-drying after immersion.
Embodiment 2:
In the there-necked flask that reflux exchanger and nitrogen ingress pipe are housed, add the γ-methacryloxypropyl trimethoxy silane (MPS) of Tween-80 and 5.54g of Span-80,0.44g of dispersion agent 30mL cyclohexane, 0.88g successively, abundant stirring, heats up 50 DEG C.Get another beaker, take the vinylformic acid of 14.46g, neutralize with the sodium hydroxide solution (sodium hydroxide of 6.27g is dissolved in 10mL water) prepared in advance, be cooled to room temperature and joined in there-necked flask and fully stir.Add the Potassium Persulphate initiator solution of 0.1g, be warmed up to 70 DEG C, acutely react, produce with a large amount of bubble, after about five minutes, reaction terminates, and generates gummy white solid.
By product alcohol immersion one day, per half a day changes clothes once, and then use distilled water immersion three days, per half a day changes clothes once, the product freeze-drying after immersion.
Claims (6)
1. a high-hydroscopicity acrylic resin, is characterised in that this resin is made up of vinylformic acid γ-methacryloxypropyl trimethoxy silane.
2. the preparation method of high-hydroscopicity acrylic resin according to claim 1: by repercussion suspension polymerization, with hexanaphthene and water for solvent, under dispersion agent Span-80, Tween-80 effect, γ-methacryloxypropyl trimethoxy silane (MPS) and vinylformic acid are polymerized, and reach the high-hydroscopicity acrylic resin containing silane group.
3., in the preparation method of high-hydroscopicity acrylic resin according to claim 2, the vinylformic acid used is in advance through sodium hydroxide neutralization, and degree of neutralization is 75%.
4., in the preparation method of high-hydroscopicity acrylic resin according to claim 2, the ratio of the amount of substance of monomeric acrylic and MPS is 9: 1.
5., in the preparation method of high-hydroscopicity acrylic resin according to claim 2, total monomer is 20 ~ 50%.
6., in the preparation method of high-hydroscopicity acrylic resin according to claim 2, the amount of initiator is 0.5% of monomer total mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654681.8A CN105199035A (en) | 2015-10-12 | 2015-10-12 | Acrylic resin with high water absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654681.8A CN105199035A (en) | 2015-10-12 | 2015-10-12 | Acrylic resin with high water absorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105199035A true CN105199035A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510654681.8A Pending CN105199035A (en) | 2015-10-12 | 2015-10-12 | Acrylic resin with high water absorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105199035A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108284657A (en) * | 2018-02-26 | 2018-07-17 | 沈阳体育学院 | A kind of preparation method for outdoor novel environment friendly court |
| CN108948258A (en) * | 2017-05-18 | 2018-12-07 | 台湾塑胶工业股份有限公司 | Water-absorbent resin and method for producing same |
-
2015
- 2015-10-12 CN CN201510654681.8A patent/CN105199035A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948258A (en) * | 2017-05-18 | 2018-12-07 | 台湾塑胶工业股份有限公司 | Water-absorbent resin and method for producing same |
| CN108284657A (en) * | 2018-02-26 | 2018-07-17 | 沈阳体育学院 | A kind of preparation method for outdoor novel environment friendly court |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |
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| WD01 | Invention patent application deemed withdrawn after publication |