CN100404612C - Preparation method of swelled vermiculite/ polyacrylic acid potassium- acrylamide high water absorption composite material - Google Patents
Preparation method of swelled vermiculite/ polyacrylic acid potassium- acrylamide high water absorption composite material Download PDFInfo
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- CN100404612C CN100404612C CNB2006100378025A CN200610037802A CN100404612C CN 100404612 C CN100404612 C CN 100404612C CN B2006100378025 A CNB2006100378025 A CN B2006100378025A CN 200610037802 A CN200610037802 A CN 200610037802A CN 100404612 C CN100404612 C CN 100404612C
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- acrylamide
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Abstract
The present invention discloses to a reparation method of a swelled vermiculite/potassium polyacrylate-acrylamide high-water absorption composite material, which is a method for preparing a high-water absorption composite material by using acrylic monomers, acrylamide monomers and swelled vermiculite powder as basic raw materials through the graft copolymerization reaction. In the present invention, the doping amount of the swelled vermiculite reaches 50%, and the amount of absorbing distilled water can reach 850 times. The water absorption performance of the swelled vermiculite/potassium polyacrylate-acrylamide high-water absorption composite material of the present invention is appreciably poorer than that of the pure organic resin polymer (can reach the general application requirement), but the manufacturing cost is obviously lower than that of the pure organic resin polymer; besides, the swelled vermiculite/potassium polyacrylate-acrylamide high-water absorption composite material has high water absorption performance and water retention and wide application at the aspects of agriculture, forestry, plant culture, soil improvement, food sanitation, civil construction, petrochemical industry, etc.
Description
Technical field
The present invention relates to a kind of preparation method of high water absorption composite material, belong to new material technology and new preparation process technical field.
Background technology
High water absorption composite material is a kind of lightly crosslinked water-swellable superpolymer that contains the strongly hydrophilic group of the exploitation eighties in 20th century, it not only can absorb the deadweight hundreds of to several thousand times of distilled water or tens times of physiological saline, and the water that adsorbs under the pressurization situation also is not easy to discharge, and is a kind of new function material with good development prospect.
At present, the preparation method of high water absorption composite material is based on solution method, inverse suspension method and emulsion polymerization.Solution method have implement simple, system is pure, evenly and not there are advantages such as using of organic solvent and recovery in crosslinking structure; But also existence is big as the reaction process medium viscosity, and reaction heat is difficult to discharge, and plant factor and throughput are low, deficiencies such as aftertreatment difficulty.Inverse suspension method has the reaction rapid heat dissipation, and temperature control is easy, molecular weight product height, characteristics such as aftertreatment is simple; But lump easily in the reaction, glue wall, and have the problems such as use, recovery and pollution of organic solvent.It is fast that emulsion polymerization has rate of polymerization, characteristics such as molecular weight of product height, but also have for example deficiency of inverse suspension method.
Summary of the invention
The object of the present invention is to provide a kind of cost lower, the manufacture method of the swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material that suction and water retention property are good.
The present invention can realize according to following technical proposals:
The first step, the purifying of Acrylic Acid Monomer and acrylamide monomer: adopt technical pure Acrylic Acid Monomer and the acrylamide monomer bought on the market, remove stopper through purification.
In second step, the preparation of potassium acrylate: by vinylformic acid: acrylamide: the mass ratio of water is 3.5～4.5: 1: 3.5～5, in water, mix Acrylic Acid Monomer and acrylamide monomer, the formation monomer mixture solution; Add potassium hydroxide solution under agitation condition in monomer mixture solution, potassium hydroxide and acrylic acid mol ratio are 70%～80%, and neutralization reaction is carried out fully.
The 3rd step, the adding of expanded vermiculite powder: under certain stirring velocity, add in the monomer mixture solution of expanded vermiculite powder after neutralization of Acrylic Acid Monomer weight 45%～50%, fully soak into, disperse.
The 4th step, graft copolymerization: 1.1%～1.3% the initiator that adds 0.06%～0.10% linking agent, the vinylformic acid weight of vinylformic acid weight, control reaction temperature is at 70 ℃～80 ℃, under agitation condition, allow polyreaction carry out fully, form half higher product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material of water content.
In the 5th step, half product is through washing, and drying obtains the finished product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material after the pulverizing.
Above-mentioned linking agent is N, N '-methylene-bisacrylamide.
Above-mentioned initiator is a Potassium Persulphate.
After adopting such scheme, the preparation method of swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material of the present invention, the expanded vermiculite powder has surface hydroxyl, interchangeability positively charged ion and special chemical structure, form a kind of advanced composite material by graft copolymerization with polyacrylic acid potassium-acrylamide, not only can improve the network structure and the water-absorbent group of polyacrylic acid potassium-acrylamide, improve the performance of material, and can reduce production costs.Has better DEVELOPMENT PROSPECT.
Embodiment
The first, the purifying of employing technical pure Acrylic Acid Monomer and acrylamide monomer is removed stopper through vacuum decompression distillation or absorption purification.
The second, by vinylformic acid: acrylamide: the mass ratio of water is 4: 1: 4.2.In water, mix Acrylic Acid Monomer and acrylamide monomer, form monomer mixture solution.Add potassium hydroxide solution under agitation condition in monomer mixture solution, potassium hydroxide and acrylic acid mol ratio are 75%, and neutralization reaction is carried out fully.
The 3rd, under violent stirring, add in the monomer mixture solution of expanded vermiculite powder after neutralization of Acrylic Acid Monomer weight 50%, fully soak into, disperse.
The 4th, 0.08% the N that adds vinylformic acid weight as linking agent, 1.2% Potassium Persulphate of N '-methylene-bisacrylamide, vinylformic acid weight as initiator, control reaction temperature is at 70 ℃～80 ℃, under agitation condition, allow polyreaction carry out fully, form half higher product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material of water content.
The five, half product is through washing, and drying is pulverized, and obtains the finished product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material.
By aforesaid method, can obtain the vermiculite incorporation and be 50% suction multiple greater than 700 times swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption composite material powder.
Claims (3)
1. the preparation method of swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material is characterized in that: realize through the following steps:
The first step, the purifying of Acrylic Acid Monomer and acrylamide monomer: adopt technical pure Acrylic Acid Monomer and the acrylamide monomer bought on the market, remove stopper through purification;
In second step, the preparation of potassium acrylate: by vinylformic acid: acrylamide: the mass ratio of water is 3.5～4.5: 1: 3.5～5, in water, mix Acrylic Acid Monomer and acrylamide monomer, the formation monomer mixture solution; Add potassium hydroxide solution under agitation condition in monomer mixture solution, potassium hydroxide and acrylic acid mol ratio are 70%～80%, and neutralization reaction is carried out fully;
The 3rd step, the adding of expanded vermiculite powder: under certain stirring velocity, add in the monomer mixture solution of expanded vermiculite powder after neutralization of Acrylic Acid Monomer weight 45%～50%, fully soak into, disperse;
The 4th step, graft copolymerization: 1.1%～1.3% the initiator that adds 0.06%～0.10% linking agent, the vinylformic acid weight of vinylformic acid weight, control reaction temperature is at 70 ℃～80 ℃, under agitation condition, allow polyreaction carry out fully, form half higher product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material of water content;
In the 5th step, half product is through washing, and drying obtains the finished product swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material after the pulverizing.
2. the preparation method of swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material according to claim 1 is characterized in that: the linking agent in above-mentioned the 4th step is N, N '-methylene-bisacrylamide.
3. the preparation method of swelled vermiculite/polyacrylic acid potassium-acrylamide high water absorption matrix material according to claim 1 is characterized in that: the initiator in above-mentioned the 4th step is a Potassium Persulphate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100378025A CN100404612C (en) | 2006-01-10 | 2006-01-10 | Preparation method of swelled vermiculite/ polyacrylic acid potassium- acrylamide high water absorption composite material |
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| CNB2006100378025A CN100404612C (en) | 2006-01-10 | 2006-01-10 | Preparation method of swelled vermiculite/ polyacrylic acid potassium- acrylamide high water absorption composite material |
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| CN1807501A CN1807501A (en) | 2006-07-26 |
| CN100404612C true CN100404612C (en) | 2008-07-23 |
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| CNB2006100378025A Expired - Fee Related CN100404612C (en) | 2006-01-10 | 2006-01-10 | Preparation method of swelled vermiculite/ polyacrylic acid potassium- acrylamide high water absorption composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103059342B (en) * | 2013-01-28 | 2014-01-01 | 天津市宝力圣尼塑管制造有限公司 | Preparation method of modified polyethylene double-wall l corrugated pipe drying agent |
| CN112956398A (en) * | 2021-01-30 | 2021-06-15 | 北京阳光绿地生态科技有限公司 | Grassland vegetation ecological restoration matrix and preparation method thereof |
| CN113480374B (en) * | 2021-08-16 | 2023-02-24 | 青岛农业大学 | Water-retention slow-release compound fertilizer and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359974A (en) * | 2001-12-29 | 2002-07-24 | 中国科学院长春应用化学研究所 | Process for preparing high-hydroscopicity composite resin for agricultural purpose |
| US6610781B1 (en) * | 1999-05-26 | 2003-08-26 | Alberta Research Council Inc. | Reinforced networked polymer/clay alloy composite |
| US20030191237A1 (en) * | 1999-05-26 | 2003-10-09 | Alberta Research Council Inc. | Networked polymer/clay alloy |
| CN1560131A (en) * | 2004-02-18 | 2005-01-05 | 华侨大学 | Manufacture process for composite material of sodium polypropenoic acid/kaolinite with super water absorbency |
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- 2006-01-10 CN CNB2006100378025A patent/CN100404612C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6610781B1 (en) * | 1999-05-26 | 2003-08-26 | Alberta Research Council Inc. | Reinforced networked polymer/clay alloy composite |
| US20030191237A1 (en) * | 1999-05-26 | 2003-10-09 | Alberta Research Council Inc. | Networked polymer/clay alloy |
| CN1359974A (en) * | 2001-12-29 | 2002-07-24 | 中国科学院长春应用化学研究所 | Process for preparing high-hydroscopicity composite resin for agricultural purpose |
| CN1560131A (en) * | 2004-02-18 | 2005-01-05 | 华侨大学 | Manufacture process for composite material of sodium polypropenoic acid/kaolinite with super water absorbency |
Non-Patent Citations (2)
| Title |
|---|
| CN 1 359 974 A 2002.07.24 |
| CN 1 560 131 A 2005.01.05 |
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