CN104892824A - Preparation method of water retaining agent - Google Patents
Preparation method of water retaining agent Download PDFInfo
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- CN104892824A CN104892824A CN201510338654.XA CN201510338654A CN104892824A CN 104892824 A CN104892824 A CN 104892824A CN 201510338654 A CN201510338654 A CN 201510338654A CN 104892824 A CN104892824 A CN 104892824A
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Abstract
The invention relates to a preparation method of a water retaining agent. The preparation method comprises the following steps: (1), a solution is prepared: 310 g of acrylic acid is added to a reaction kettle, 292 g of water is added and mixed uniformly, and the solution is neutralized with sodium hydroxide until the pH is 5.3; (2), the solution is cooled; (3), nitrogen is introduced: N,N-methylene diacrylamide, EDTA (ethylenediaminetetraacetic acid) disodium and carboxymethyl cellulose are added to the cooled solution and uniformly mixed, and nitrogen introduction started; (4), an initiator is added: the nitrogen is introduced for 20 min until oxygen is completely removed, the initiator is added, a liquid starts to react, nitrogen introduction is stopped, and the kettle is closed; (5), a colloidal block is treated: the solution completely forms the colloidal block when the reaction ends, and the colloidal block is pelletized and dried to prepare colloidal particles; (6), 3 g of glycerin is taken and dissolved in 3 g of alcohol, 50 g of colloidal particles are taken, and the well dissolved glycerin solution is sprayed uniformly on the colloidal particles to prepare a finished product. The prepared water retaining agent has the high water absorption speed, the high water absorption rate, the good water retaining effect and multiple recycling times, and the surface of the water retaining agent is dry and moisture-free after water absorption.
Description
Technical field
The present invention relates to a kind of preparation method of water-holding agent.
Background technology
The preparation method of current water-holding agent is mainly using starch, Mierocrystalline cellulose or vinylformic acid as raw material, after adding linking agent and initiator and carrying out copolymerization, crosslinking reaction, then dry and pulverize (also claiming granulation) etc.Starch based water-holding agent shortcoming is gel-strength and Salt And Alkali Tolerance poor performance, and life cycle is short; The shortcoming of Fiber water retention agent is that water-absorbent is poor; And the acrylic acid or the like water-holding agent comparatively generally used at present adopts organic vinylformic acid and inorganics as raw material on raw material, not only improve the Saline alkali tolerance of water-holding agent after being characterized in introducing inorganics, and cost is reduced.
Traditional water-holding agent exists that absorption speed is slow, and water absorbent rate is not high, and particle is anti-extrusion and the problem such as Water-saving effect is bad not.
Summary of the invention
In order to solve the problem, the invention provides a kind of preparation method of water-holding agent.
The technical solution used in the present invention is:
A preparation method for water-holding agent, comprises the following steps:
(1) configure solution: get vinylformic acid 310g and put into reactor, the 292g that adds water mixes, then to be neutralized to pH with sodium hydroxide be 5.3, neutral temperature is no more than 40 DEG C;
(2) lower the temperature: by the solution frozen water of becoming reconciled be cooled to 0-3 DEG C;
(3) inflated with nitrogen: add N,N methylene bis acrylamide 0.5g, EDETATE SODIUM 0.03g and carboxymethyl cellulose 0.2g in the solution after cooling, mix rear beginning inflated with nitrogen;
(4) initiator is added: inflated with nitrogen adds initiator to oxygen in 20 minutes after clean, and liquid starts reaction, then stops inflated with nitrogen, encloses container;
(5) process blob of viscose: at the end of reaction, solution becomes blob of viscose completely, blob of viscose granulation is dried, makes micelle;
(6) micelle is processed: get glycerine 3g and be dissolved in 3g alcohol, then get 50g micelle, solvent glycerine solution is sprayed on micelle uniformly, makes finished product.
Described in step (4), initiator comprises Potassium Persulfate and sodium bisulfite, during interpolation, first adds Potassium Persulfate 0.1g, adds sodium bisulfite 0.01g after 5 minutes.
The temperature of drying described in step (5) is 145 DEG C.
EDETATE SODIUM, Chinese is disodium ethylene diamine tetraacetate, it is common a kind of metal chelator, for the electrochemical etching of electroless copper, gold-plated, terne coating, steel part and copper piece silver-plated before solution in, also for washing composition, liquid soap, shampoo, agrochemistry sprays, color sensitive material washing processing bleach-fixing liquid, water-purifying machine, pH adjusting agent, dispersion stabilizer etc., to change with institute in styrene-butadiene rubber(SBR) polymerization and reduce in initiating system, EDETATE SODIUM is as the integral part of promoting agent, be mainly used in complexing ferrous ion, control polymerization rate.
The invention has the beneficial effects as follows: water-holding agent absorption speed prepared by the present invention is fast, and water absorbent rate is high, and Water-saving effect is good, reuse often, and after water suction, surface is dry, does not have moisture.
Embodiment
A preparation method for water-holding agent, comprises the following steps:
(1) configure solution: get vinylformic acid 310g and put into reactor, the 292g that adds water mixes, then to be neutralized to pH with sodium hydroxide be 5.3, neutral temperature is no more than 40 DEG C;
(2) lower the temperature: by the solution frozen water of becoming reconciled be cooled to 0-3 DEG C;
(3) inflated with nitrogen: add N,N methylene bis acrylamide 0.5g, EDETATE SODIUM 0.03g and carboxymethyl cellulose 0.2g in the solution after cooling, mix rear beginning inflated with nitrogen;
(4) initiator is added: inflated with nitrogen adds initiator to oxygen in 20 minutes after clean, described initiator comprises Potassium Persulfate and sodium bisulfite, during interpolation, first add Potassium Persulfate 0.1g, sodium bisulfite 0.01g is added after 5 minutes, liquid starts reaction, then stops inflated with nitrogen, encloses container;
(5) process blob of viscose: react at the end of 1 hour, final temperature is 90 DEG C, and solution becomes blob of viscose completely, blob of viscose granulation dried, the temperature of oven dry is 145 DEG C, makes micelle;
(6) micelle is processed: get glycerine 3g and be dissolved in 3g alcohol, then get 50g micelle, solvent glycerine solution is sprayed on micelle uniformly, makes finished product.
Water-holding agent absorption speed prepared by the present invention is fast, and water absorbent rate is up to 500 times, and Water-saving effect is good, reuses often, and after water suction, surface is dry, does not have moisture.
Claims (3)
1. a preparation method for water-holding agent, is characterized in that: comprise the following steps:
(1) configure solution: get vinylformic acid 310g and put into reactor, the 292g that adds water mixes, then to be neutralized to pH with sodium hydroxide be 5.3, neutral temperature is no more than 40 DEG C;
(2) lower the temperature: by the solution frozen water of becoming reconciled be cooled to 0-3 DEG C;
(3) inflated with nitrogen: add N,N methylene bis acrylamide 0.5g, EDETATE SODIUM 0.03g, carboxymethyl cellulose 0.2g in the solution after cooling, mix rear beginning inflated with nitrogen;
(4) initiator is added: inflated with nitrogen adds initiator to oxygen in 20 minutes after clean, and liquid starts reaction, then stops inflated with nitrogen, encloses container;
(5) process blob of viscose: at the end of reaction, solution becomes blob of viscose completely, blob of viscose granulation is dried, makes micelle;
(6) micelle is processed: get glycerine 3g and be dissolved in 3g alcohol, then get 50g micelle, solvent glycerine solution is sprayed on micelle uniformly, makes finished product.
2. the preparation method of a kind of water-holding agent according to claim 1, is characterized in that: described in step (4), initiator comprises Potassium Persulfate and sodium bisulfite, during interpolation, first adds Potassium Persulfate 0.1g, adds sodium bisulfite 0.01g after 5 minutes.
3. the preparation method of a kind of water-holding agent according to claim 1, is characterized in that: the temperature of drying described in step (5) is 145 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338654.XA CN104892824A (en) | 2015-06-18 | 2015-06-18 | Preparation method of water retaining agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338654.XA CN104892824A (en) | 2015-06-18 | 2015-06-18 | Preparation method of water retaining agent |
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| CN104892824A true CN104892824A (en) | 2015-09-09 |
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| CN201510338654.XA Pending CN104892824A (en) | 2015-06-18 | 2015-06-18 | Preparation method of water retaining agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989357A (en) * | 2022-06-17 | 2022-09-02 | 四川华一众创新材料有限公司 | Moisturizing humectant capable of reducing content of type III anhydrite and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851340A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Preparation for outer high cross-linking water retaining agent |
| CN102864635A (en) * | 2012-09-03 | 2013-01-09 | 昆山市奋发绝缘材料有限公司 | Preparation method of carboxymethyl cellulose copolymer type water-blocking yarn |
| CN102936348A (en) * | 2012-11-01 | 2013-02-20 | 烟台万华聚氨酯股份有限公司 | Crylic acid water-absorbent resin with excellent water-retaining property and yellowing resistance and preparation method thereof |
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2015
- 2015-06-18 CN CN201510338654.XA patent/CN104892824A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851340A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Preparation for outer high cross-linking water retaining agent |
| CN102864635A (en) * | 2012-09-03 | 2013-01-09 | 昆山市奋发绝缘材料有限公司 | Preparation method of carboxymethyl cellulose copolymer type water-blocking yarn |
| CN102936348A (en) * | 2012-11-01 | 2013-02-20 | 烟台万华聚氨酯股份有限公司 | Crylic acid water-absorbent resin with excellent water-retaining property and yellowing resistance and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989357A (en) * | 2022-06-17 | 2022-09-02 | 四川华一众创新材料有限公司 | Moisturizing humectant capable of reducing content of type III anhydrite and preparation method and application thereof |
| CN114989357B (en) * | 2022-06-17 | 2024-03-12 | 四川华一众创新材料有限公司 | Moisturizing agent for reducing III-type anhydrite content, and preparation method and application thereof |
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Application publication date: 20150909 |