CN1621422A - Production process of water-absorbent materials - Google Patents
Production process of water-absorbent materials Download PDFInfo
- Publication number
- CN1621422A CN1621422A CN 200310105765 CN200310105765A CN1621422A CN 1621422 A CN1621422 A CN 1621422A CN 200310105765 CN200310105765 CN 200310105765 CN 200310105765 A CN200310105765 A CN 200310105765A CN 1621422 A CN1621422 A CN 1621422A
- Authority
- CN
- China
- Prior art keywords
- water
- absorbing material
- weight ratio
- acrylamide
- bentonite
- 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
Abstract
The technological scheme of the present invention is that the water absorbing material is produced through the steps of: compounding bentonite into 10-50 % concentration water solution and mixing with 30 % concentration acrylamide aquan in the bentonite/acrylamide weight ratio of 0.25-4; adding into the mixture aqua NaOHO of 0.1-4 wt%, N, N-methylene bis(propenyl amine) 0.006-0.015 wt%, (NH4)2S2O8 0.01-1 wt% and Na2SO3.5H2O 0.7-1.5 wt% and oxidation-reduction and polymerization at room temperature for 20 min to obtain gel polymer; and pelletizing, stoving and crushing. The said process has cheap bentonite used and no 'three wastes' produced, and has the prepared water absorbing material has high and controllable water absorption.
Description
One, technical field: the method for producing that the present invention relates to water-absorbing material.
Two, background technology: water-absorbing material has that water-retaining capacity is strong, good water-retaining property, intensity height, and advantages such as after-applied certain pressure does not dewater absorb water.It is all having important application aspect industry, agricultural, Water in Water Shutoff in Oil Field, afforestation, soil improvement, environment protection and the daily life.At present, all be with petrochemicals and natural polymer raw material, adopt chemical method or radiation method synthesizing super absorbent material.Its production cost height, complex process.
Three, The present invention be directed to the defective that exists in the prior art, providing a kind of is main raw material with inorganics wilkinite and acrylamide, adopts the production method of the controlled water-absorbing material of the synthetic suction of redox initiation system or oxidation initiator system multiple.
Technical scheme of the present invention is, wilkinite is made into the aqueous solution that concentration is 10-50%, mixes with 30% acrylamide solution then, and the weight ratio of wilkinite and acrylamide is 20: 80-80: between 20.Adding weight percent in mixed aqueous solution is the NaOHO of 0.1-4%, the NN-methylene-bis allylamine of the 006-0.015%, (NH of 0.01-1%
4)
2S
2O
8, the Na of 0.7-1.5%
2SO
35H
2O.At ambient temperature, carry out redox initiate polymerization after 20 minutes, obtain obtaining the high-absorbent material product through granulation, oven dry, pulverizing again after the gelatinous polymer.Can change the ratio of synthetics according to the different needs of oil field, agricultural, chemical industry, gardening, environmental protection, aspect such as daily, the different high-absorbent material of multiple obtains absorbing water, the suction multiple can be controlled in several grams/gram, tens gram/grams, several hectograms/gram, last kilogram/gram.
The material that this method is used is cheap wilkinite, per kilogram five to six minutes, and aboundresources.Simultaneously, this method synthesis technique is easy, does not use expensive catalysts and organic solvent, and three to five yuan of product cost per kilograms have reduced 40%-60% than currently available products cost.In addition, it is controlled that the synthetic high-absorbent material has the suction multiple in this way, do not produce characteristics such as the three wastes.
Four, description of drawings: do not have
Five, embodiment:
Be a preferred example of the present invention below:
Compound concentration is 30% bentonite solution, placed 10 hours, and made it form the pasty state homogeneous system, take out 30 grams and 30 gram concentration and be 30% acrylamide soln and stir, add 0.25 ml concn and be 3% NN-the methylene-bisacrylamide, (NH of 0.4 gram
4)
2S
2O
8, the Na of 0.94 gram
2SO
35H
2O, 4.5 the 15NnaOH of milliliter, fully stir and form the pasty state homogeneous system, be placed on and carry out polyreaction under the room temperature condition after 20 minutes, place 50 ℃ of thermostat containers to continue reaction again, obtain gelatinous polymer, get a certain amount of high-absorbent material product and do the water-retaining capacity measurement, the suction multiple is 914 gram/grams.
Claims (4)
1, the production method of water-absorbing material, it is characterized in that be by bentonite solution with after acrylamide solution mixes, add NaOH, NN-methylene-bisacrylamide, (NH
4)
2S
2O
2And Na
2SO
35H
2After this O fully stirred at ambient temperature polyreaction after 20 minutes, placed temperature 50-75 ℃ thermostat container one to four hour, obtained gelatinous polymer, again with polymkeric substance granulation, oven dry, pulverizing.
2, the production method of water-absorbing material as claimed in claim 1, the concentration that it is characterized in that bentonite solution is 10-50%, acrylamide solution concentration is 30%.
3, the production method of water-absorbing material as claimed in claim 1, the weight ratio that it is characterized in that wilkinite and acrylamide is 20: 80-80: between 20.
4, the production method of water-absorbing material as claimed in claim 1, the weight ratio that it is characterized in that NaOH is 0.1-4%, (NH
4)
2S
2O
3Weight ratio 0.01-1%, NN-methylene-bisacrylamide weight ratio is 0.006-0.015%, Na
2SO
35H
2The weight ratio of O is 0.7-1.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105765 CN1621422A (en) | 2003-11-30 | 2003-11-30 | Production process of water-absorbent materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105765 CN1621422A (en) | 2003-11-30 | 2003-11-30 | Production process of water-absorbent materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1621422A true CN1621422A (en) | 2005-06-01 |
Family
ID=34757401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310105765 Pending CN1621422A (en) | 2003-11-30 | 2003-11-30 | Production process of water-absorbent materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1621422A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214444A (en) * | 2015-11-13 | 2016-01-06 | 无锡清杨机械制造有限公司 | A kind of pressure swing adsorption method reclaims the method for toluene in tail gas |
| CN109399654A (en) * | 2018-05-14 | 2019-03-01 | 句容康泰膨润土有限公司 | A kind of bentonite composite high-water uptake material and preparation method thereof |
| CN110975818A (en) * | 2019-12-04 | 2020-04-10 | 中国非金属矿工业有限公司 | Bentonite composite high-water-absorption pad and preparation method thereof |
-
2003
- 2003-11-30 CN CN 200310105765 patent/CN1621422A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214444A (en) * | 2015-11-13 | 2016-01-06 | 无锡清杨机械制造有限公司 | A kind of pressure swing adsorption method reclaims the method for toluene in tail gas |
| CN109399654A (en) * | 2018-05-14 | 2019-03-01 | 句容康泰膨润土有限公司 | A kind of bentonite composite high-water uptake material and preparation method thereof |
| CN110975818A (en) * | 2019-12-04 | 2020-04-10 | 中国非金属矿工业有限公司 | Bentonite composite high-water-absorption pad and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102351603B (en) | Watering-fertilizing integration water retention agent, preparation method thereof and application thereof | |
| CN102432761B (en) | Nutritional type water-retaining agent for plants growing on drought soil and preparation method thereof | |
| CN103194030A (en) | Preparation method for temperature-sensitive hydrogel/silver nanocomposite | |
| CN101928034A (en) | A kind of method for preparing cuprous chloride | |
| CN101870623A (en) | Nitrogenous super absorbent resin fertilizer and preparation method thereof | |
| CN109400418A (en) | A kind of humic acid slow release siliceous fertilizer and preparation method thereof | |
| CN106749935B (en) | A kind of degradable water-retaining agent and preparation method thereof | |
| CN101407551A (en) | Technique for producing starch stearate by semidry process | |
| CN107794048A (en) | A kind of attapulgite/lignite compounding absorbent-type soil oxygenation agent and preparation method thereof | |
| CN1020617C (en) | Synthtic method for high water absorption material | |
| CN1621422A (en) | Production process of water-absorbent materials | |
| CN114180553A (en) | Method for preparing nitrogen-doped porous carbon by taking waste crop roots as raw materials and application | |
| CN1114672C (en) | Multifunctional super water-absorbing water-retaining agent and its preparation method | |
| CN101143909A (en) | Method of producing high-performance high water absorption resin | |
| CN101143912B (en) | Method for producing high-performance high water absorption resin | |
| CN102181294B (en) | Water-retaining agent material for greening deserts and preparation method thereof | |
| CN105384882A (en) | Oxidized peat fulvic acid composite water retaining agent and preparation method thereof | |
| CN1651476A (en) | Method of oreparing starch grafting type high water absorption resin by wave polymerization | |
| CN113754496A (en) | Slow release fertilizer and production process thereof | |
| CN1204046C (en) | High density high specific surface active carbon preparing method | |
| CN1228360C (en) | One-step synthesis process of producing biodegradable high-hydroscopicity resin directly with corn powder | |
| CN85102156A (en) | Radiation prepares the method for super composite absorbent material | |
| KR100463313B1 (en) | A method for preparing super adsorbent resin fertilizers | |
| CN104072672B (en) | Method using carboxymethyl manioc waste as Material synthesis high hydroscopic resin | |
| CN113943433B (en) | High-performance acrylic acid water-absorbent resin and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |