CN102417564A - Water-retaining agent and preparation method thereof by papermaking sludge - Google Patents
Water-retaining agent and preparation method thereof by papermaking sludge Download PDFInfo
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- CN102417564A CN102417564A CN2011102974090A CN201110297409A CN102417564A CN 102417564 A CN102417564 A CN 102417564A CN 2011102974090 A CN2011102974090 A CN 2011102974090A CN 201110297409 A CN201110297409 A CN 201110297409A CN 102417564 A CN102417564 A CN 102417564A
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Abstract
The invention discloses a water-retaining agent, which is prepared with a chemical method by that lignin extracted from papermaking sludge is utilized, and meanwhile monomer, initiator and crosslinker are added. The water-retaining agent comprises the following ingredients in percentage by weight: 24-29wt% of the lignin, 0.03-0.15wt% of the initiator, 69-77wt% of the monomer and 0.07-0.6wt% of the crosslinker. The water-retaining agent has the advantages of abundant raw materials, low cost, good performance and high stability, the problem that the traditional water-retaining agent is difficult to degrade and the problems of high preparation cost and poor compatibility are solved, the papermaking sludge processing and disposal problem can also be solved, the sludge is recycled, and small pollution is caused to the environment.
Description
Technical field
The present invention relates to a kind of water-holding agent and preparation method thereof, specifically, is a kind of water-holding agent that utilizes the paper mill sludge preparation and preparation method thereof.
Background technology
Water-holding agent is claimed super absorbent resin again, is a kind of three-dimensional netted resin colloid that is cross-linked with each other and is formed by the organic carbochain with chemical hydrophilic radical.Owing to having tens of times of own wts and even thousands of times high water-retaining capacity and the high-water performance that does not also dewater that pressurizes, it is widely used in aspects such as agricultural, gardening, industry, weaving, medical science, petrochemical complex, building materials, environmental protection, food and daily necessities.The novel water-retaining agent colloid is because have a high-hydrophilic, low toxicity and biodegradable performance and enjoy favor.But, if water-holding agent is applied to agricultural, requires water-holding agent to possess and inhale water retention property preferably, low production cost, and have good bio-compatibility, this remains a difficult problem.As the patent No. be 92104785.1 with the patent No. be the disclosed method for preparing water-holding agent of CN1321723A, the water-holding agent compatibility that makes is relatively poor, and it is lower to inhale water retention property.
China is straw pulp big producing country, and at present comparatively simple for the paper mill sludge processing mode that produces in the pulping and papermaking processes, its useful component does not obtain rational exploitation and utilization.The staple of paper mill sludge is an xylogen; And xylogen has surface of good activity, dispersiveness and binding property; The functional groups such as alcoholic extract hydroxyl group, phenolic hydroxyl group, carboxyl and carbon back of wherein containing some amount; The not share electron pair of Sauerstoffatom can carry out graft copolymerization with vinylformic acid in the functional group, therefore can be used as the raw material production water-holding agent, realizes the recycling of paper mill sludge.
Summary of the invention
The present invention is in order to solve existing water-holding agent poor compatibility, and it is low to inhale water retention property, and problems such as cost height, and the recycling of realization paper mill sludge are that main raw material prepares water-holding agent with the xylogen that extracts in the paper mill sludge.
Water-holding agent of the present invention is processed through chemical synthesis process by the xylogen that extracts in the paper mill sludge, initiator, monomer and linking agent; It is 24% ~ 29% that the shared mass percent of each composition is respectively the xylogen that extracts in the paper mill sludge; Initiator 0.03% ~ 0.15%; Monomer is 69% ~ 77%, and linking agent is 0.07% ~ 0.6%.Monomer adopts vinylformic acid, and initiator adopts Potassium Persulphate, and linking agent adopts N, N-methylene diacrylamide.
The method that the present invention utilizes paper mill sludge to prepare water-holding agent may further comprise the steps:
(1) takes by weighing 30 g mud in the 500ml beaker, add 300ml30 ~ 40 ℃ hot water earlier, drip 10% NaOH solution while stirring and make the lignin dissolution in the mud, filter, will filtrate and use 20%H the solvend preliminarily solubilised
2SO
4Regulate pH value to 3 ~ 5 and make deposition fully, again in 80 ~ 90 ℃ of following heat tracing 60min, suction filtration, and the water washing precipitation is to neutral, will precipitate dry the bullion xylogen;
(2) xylogen that makes in the 2g step (1) is put into there-necked flask, add 80 ~ 100ml zero(ppm) water, stir 30 ~ 50min, feed the nitrogen deoxygenation simultaneously, temperature of reaction is controlled at 50 ~ 90 ℃;
(3) 0.03% ~ 0.15% add initiator by mass percentage, reaction 20 ~ 60min, and then add 69% ~ 77% monomer and 0.07% ~ 0.5% linking agent, ultrasonic reaction 2 ~ 4h by mass percentage;
(4) product in the step (3) is taken out, with absolute ethyl alcohol repetitive scrubbing 3 ~ 5 times, and then the high-voltage ultraviolet mercury lamp of 1200W irradiation 10 ~ 15min down, oven dry, pulverizing promptly get product.
The present invention utilizes the xylogen in the waste resource paper mill sludge to be the feedstock production water-holding agent; Not only stable performance of the water-holding agent that makes, and be prone to be degraded by microorganisms, can not cause environmental pollution; Solve the treatment and disposal problem of paper mill sludge simultaneously, realized the recycling of mud.
Embodiment
Embodiment one:This embodiment through the synthetic water-holding agent of chemical method, is respectively xylogen 24.5%, initiator 0.08%, monomer 75%, linking agent 0.42% by the xylogen that extracts in the paper mill sludge, initiator, monomer, linking agent by mass percentage.
Embodiment two: this embodiment through the synthetic water-holding agent of chemical method, is respectively xylogen 28%, initiator 0.10%, monomer 71.4%, linking agent 0.50% by the xylogen that extracts in the paper mill sludge, initiator, monomer, linking agent by mass percentage.
Embodiment three:This embodiment through the synthetic water-holding agent of chemical method, is respectively xylogen 29%, initiator 0.12%, monomer 70.3%, linking agent 0.58% by the xylogen that extracts in the paper mill sludge, initiator, monomer, linking agent by mass percentage.
Claims (5)
1. a water-holding agent is characterized in that, and is synthetic by the xylogen that extracts in the paper mill sludge, initiator, monomer and linking agent; It is 24% ~ 29% that the shared mass percent of each composition is respectively xylogen; Initiator 0.03% ~ 0.15%, monomer are 69% ~ 77%, and linking agent is 0.07% ~ 0.6%.
2. a method of utilizing the paper mill sludge preparation like claims 1 described water-holding agent is characterized in that, specifically may further comprise the steps:
(1) takes by weighing 30 g mud in the 500ml beaker, add 300ml, 30 ~ 40 ℃ of hot water earlier, drip 10% NaOH solution while stirring and make the lignin dissolution in the mud, filter, will filtrate and use 20%H the solvend preliminarily solubilised
2SO
4Regulate pH value to 3 ~ 5 and make deposition fully, again in 80 ~ 90 ℃ of following heat tracing 60min, suction filtration, and the water washing precipitation is to neutral, will precipitate dry the bullion xylogen;
(2) xylogen that makes in the 2g step (1) is put into there-necked flask, add 80 ~ 100ml zero(ppm) water, stir 30 ~ 50min, feed the nitrogen deoxygenation simultaneously, temperature of reaction is controlled at 50 ~ 90 ℃;
(3) add initiator, reaction 20 ~ 60min, and then add monomer and linking agent, ultrasonic reaction 2 ~ 4h;
(4) product in the step (3) is taken out, with absolute ethyl alcohol repetitive scrubbing 3 ~ 5 times, and then the high-voltage ultraviolet mercury lamp of 1200W irradiation 10 ~ 15min down, oven dry, pulverizing promptly get product.
3. like claims 2 described a kind of methods of utilizing paper mill sludge to prepare water-holding agent, it is characterized in that said monomer adopts vinylformic acid.
4. like claims 2 or 3 described a kind of methods of utilizing paper mill sludge to prepare water-holding agent, it is characterized in that said initiator adopts Potassium Persulphate.
5. like claims 2 or 3 described a kind of methods of utilizing paper mill sludge to prepare water-holding agent, it is characterized in that said linking agent adopts N, N-methylene diacrylamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110297409.0A CN102417564B (en) | 2011-09-30 | 2011-09-30 | Water-retaining agent and preparation method thereof by papermaking sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110297409.0A CN102417564B (en) | 2011-09-30 | 2011-09-30 | Water-retaining agent and preparation method thereof by papermaking sludge |
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| CN102417564A true CN102417564A (en) | 2012-04-18 |
| CN102417564B CN102417564B (en) | 2014-02-12 |
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| CN201110297409.0A Expired - Fee Related CN102417564B (en) | 2011-09-30 | 2011-09-30 | Water-retaining agent and preparation method thereof by papermaking sludge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496868A (en) * | 2013-09-18 | 2014-01-08 | 柳州佳人板业有限公司 | Building mortar water-retaining agent and application thereof |
| CN106397679A (en) * | 2016-08-31 | 2017-02-15 | 广东慧信环保有限公司 | Agricultural water-retaining agent prepared with ceramic sludge and method thereof |
| CN110892005A (en) * | 2017-03-09 | 2020-03-17 | Fp创新研究所 | Process for producing cationic lignin copolymer under acid water solution condition |
| CN114933785A (en) * | 2022-04-29 | 2022-08-23 | 上海昶法新材料有限公司 | Modified lignin/PBAT biodegradable plastic and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750042B (en) * | 2016-12-23 | 2018-11-09 | 南京林业大学 | A kind of preparation method of polyacrylic water-absorbing resin |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6397612A (en) * | 1986-10-15 | 1988-04-28 | Nisshinbo Ind Inc | Highly water-absorptive polymer |
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2011
- 2011-09-30 CN CN201110297409.0A patent/CN102417564B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6397612A (en) * | 1986-10-15 | 1988-04-28 | Nisshinbo Ind Inc | Highly water-absorptive polymer |
Non-Patent Citations (2)
| Title |
|---|
| 《环境工程》 20060430 李淑勉等 "造纸污泥中木质素的提取及其改性研究" 55、62-63 1-5 第24卷, 第2期 * |
| 李淑勉等: ""造纸污泥中木质素的提取及其改性研究"", 《环境工程》, vol. 24, no. 2, 30 April 2006 (2006-04-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496868A (en) * | 2013-09-18 | 2014-01-08 | 柳州佳人板业有限公司 | Building mortar water-retaining agent and application thereof |
| CN103496868B (en) * | 2013-09-18 | 2015-07-01 | 柳州佳人板业有限公司 | Building mortar water-retaining agent and application thereof |
| CN106397679A (en) * | 2016-08-31 | 2017-02-15 | 广东慧信环保有限公司 | Agricultural water-retaining agent prepared with ceramic sludge and method thereof |
| CN110892005A (en) * | 2017-03-09 | 2020-03-17 | Fp创新研究所 | Process for producing cationic lignin copolymer under acid water solution condition |
| CN114933785A (en) * | 2022-04-29 | 2022-08-23 | 上海昶法新材料有限公司 | Modified lignin/PBAT biodegradable plastic and preparation method thereof |
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| CN102417564B (en) | 2014-02-12 |
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