CN102121207B - Papermaking dry-strengthening agent - Google Patents
Papermaking dry-strengthening agent Download PDFInfo
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- CN102121207B CN102121207B CN201010577567A CN201010577567A CN102121207B CN 102121207 B CN102121207 B CN 102121207B CN 201010577567 A CN201010577567 A CN 201010577567A CN 201010577567 A CN201010577567 A CN 201010577567A CN 102121207 B CN102121207 B CN 102121207B
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Abstract
The invention discloses a papermaking dry-strengthening agent, wherein the dry-strengthening agent consists of the following components by weight percent: 0.5-2.5% of modified starch; 10-40% of poly-anionic cellulose, 40-84% of acrylamide, 1-20% of acrylics or ester thereof, 1-10% of carboxylic acid ester, 1-10% of vinyl cyanide, 1-5% of anti-crosslinking agent, 0.1-1% of reaction inhibitor, 0.5-2% of polybasic composite catalyst, 0.5-2% of curing agent and the balance of pH regulator. The papermaking dry-strengthening agent is made by one-step method with stem grafting and multivariant copolymerization technology.
Description
Technical field
The invention belongs to the auxiliary agent field in the paper technology, relate to a kind of nontoxic, environment protection type paper dry strength agent that solubility is strong.
Background technology
In the dry strength agent that uses at present, the dry strength agent of starch based almost occupies the market share of the overwhelming majority.And with starch as dry strength agent, from its use, need its gelatinization be diluted, and then through pump, technological process is complicated again, and has increased equipment and personnel's input with steam; And the long-term a large amount of starch that use of paper manufacturing systems are as reinforcing agent, and are bigger to the pollution of the plain boiled water of paper machine.In addition, the boiling gelatinization of starch needs power consumption, has not only consumed gas but also power consumption, is unfavorable for energy-saving and emission-reduction; The result of use of the dry strength agent of processing from prior art sees, with its paper product of being produced as auxiliary agent: at 5-7N.m/g, the burst index of craft paper has only 1.5-2.0kpa.m like the horizontal ring crush intensity of watt rib paper
2/ g, the folding strength of above-mentioned 2 kinds of paper has only 20 times, and pop strength is poor.In addition, in China's paper industry raw material, because timber resource shortage, a large amount of at present paper making raw materials that use mainly are straw pulp, secondary stock, and these raw materials have a strong impact on the intensity of paper and cardboard owing to shortcomings such as fiber weak point, heteroproteose cell content height, water retention value height.
The dry strength agent of prior art to sum up exists the cost height, power consumption is big, production procedure is complicated, and dry strength agent is to improving defectives such as folding strength, ring crush intensity, pop strength be relatively poor.How solving the existing existing many defectives of dry strength agent finished product, has been problem of needing solution badly in the paper industry.
Summary of the invention
The present invention is in order to overcome the existing problem of dry strength agent in the prior art; Provide that a kind of macromolecule low viscosity resin, easy to use, stable performance, cost are low, ring crush intensity and the high papermaking dry strength agent of pop strength; Wet end when this dry strength agent is used for papermaking adds and uses as top sizing, and the dry strength and the anti-intensity of tearing of paper can significantly be provided, and obviously improves the ring crush intensity and the slurry water filtering performance of paper; Improve keeping of fine component; Reduce the paper cost, increase economic efficiency, alleviate technological process of treating papermaking pressure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of papermaking dry strength agent, dry strength agent are that 0.5～2.5% converted starch, 10-40% polyanion cellulose, 40-84% acrylamide, 1-20% acrylic acid or its ester class, 1-10% carboxylic acid ester, 1-10% acrylonitrile, pH regulator agent, the anti-crosslinking agent of 1-5%, 0.1-1% reaction suppressor, the many first composite catalysts of 0.5-2%, 0.5-2% curing agent are formed by percentage by weight.
As the further design to the aforementioned techniques scheme: the override ratio scheme of the percentage by weight of aforesaid certain part component is: the percentage by weight of aforesaid converted starch is 1-2%, and the percentage by weight of polyanion cellulose is that the percentage by weight of 15-25%, acrylamide is that the percentage by weight of 60-71%, acrylic acid or its ester class is that the percentage by weight of 5-10%, carboxylic acid ester is that the percentage by weight of 4-6%, acrylonitrile is 4-7%.
As the further design to the aforementioned techniques scheme: aforementioned converted starch comprises a kind of in oxidized starch, cationic starch, phosphoric acid fat starch amphoteric starch, the dextrin or more than two kinds.Aforementioned oxidized starch comprises hypochlorite oxidation starch, hydrogen peroxide oxidation starch.
As the further design again to the aforementioned techniques scheme: aforesaid pH regulator agent is an alkali metal hydroxide, and alkali metal hydroxide can be selected a kind of in NaOH, potassium hydroxide, the rubidium hydroxide for use or more than two kinds; The pH regulator agent also can be acidic materials, and acidic materials are a kind of of hydrochloric acid, sulfuric acid, acetic acid, acetate, citric acid, oxalic acid or more than two kinds.
Aforesaid anti-crosslinking agent comprises ureas, sodium sulphate, sodium chloride, ethene amine and ammoniacal liquor; Reaction suppressor is one or both in quinone phenols, the many alkyl phenols; Conditioning agent is a compound: a kind of in alcohols, isopropyl alcohol, ethylene glycol, the alkyl hydrosulfide or more than two kinds; Polynary composite catalyst is persulfate, peroxide, and persulfate is: potassium peroxydisulfate, Ammonium Persulfate 98.5 and sodium salt thereof a kind of or more than two kinds, peroxide is: a kind of in hydrogen peroxide, benzoyl peroxide, the water-soluble azo class or more than two kinds; Described curing agent is the compound of reductant class, and its chemicals are a kind of in sodium sulfite, sodium hydrogensulfite, ethylene glycol amine, triethanolamine, the tertiary amines organic amine or more than two kinds.
Dry strength agent of the present invention is compared with the dry strength agent of prior art, has following characteristics and advantage:
1, dry strength agent of the present invention adopts one-step method to carry out grafting and the preparation of multi-component copolymer reaction process technology simultaneously; With traditional independent graft reaction or copolyreaction separately; Again or the method for copolyreaction is different fully behind the substep graft reaction; Its dry strength agent for preparing is nontoxic, the product solubility is strong, soluble in water, belongs to environmentally friendly machine.
2, the converted starch in the main raw material(s), polyanion cellulose, acid amides, acrylic acid or its ester class, carboxylic acid ester and acrylonitrile are based on the domestic market supply, sufficient raw, and cost is low.
3, the present invention uses main the pay material of converted starch as dry strength agent, has solved and in traditional handicraft, can only use cationic starch and the anionic starch defective as dry strength agent.
4, dry strength agent of the present invention is applied to the physical strength that can improve paper in the papermaking, the ring crush intensity index 10%～20% that improves paper; The burst index that improves paper is more than 15%; And can improve retention aid and filtering aid property, increase the retention rate of fiber fines, and dry strength.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail
Embodiment 1
At one the returning in the neck flask of agitator, thermometer, reflux condenser is housed, adds the converted starch of 3g, 12g polyanion cellulose, 50% acrylamide solution of 150g; 8g acrylic acid, the 2g carboxylic acid ester, 2g third is rare fine, 0.8g sodium sulphate; 2g hydrogen peroxide and 355g water, adjust pH are 3, add the 0.5g sodium sulfite, and the reacting by heating mixture is 65 ℃; Under this temperature, react slaking 5 hours, discharging.
Aforesaid converted starch is a hypochlorite oxidation starch, and the pH regulator agent is a NaOH, and anti-crosslinking agent is a sodium sulphate, and reaction suppressor is many alkyl phenols, and conditioning agent is an ethylene glycol, and polynary composite catalyst is a hydrogen peroxide, and curing agent is a sodium sulfite.
Actual measurement paper reinforced effects sees the following form
Embodiment 2
At one the returning in the neck flask of agitator, thermometer, reflux condenser is housed, adds the converted starch of 8g, 18g polyanion cellulose, 50% acrylamide solution of 140g, 8g acrylic acid; The 2g carboxylic acid ester, 2g third is rare fine, 0.7g sodium chloride, the many alkyl phenols of 0.5g; A small amount of isopropyl alcohol, 0.02g Ammonium Persulfate 98.5 and 355g water, adjust pH are 3, add the 0.5g triethanolamine; The reacting by heating mixture is 65 ℃, under this temperature, reacts slaking 5 hours, discharging.
Aforementioned converted starch is cationic starch and phosphoric acid fat starch amphoteric starch; The pH regulator agent is potassium hydroxide and rubidium hydroxide; Anti-crosslinking agent is a sodium chloride, and reaction suppressor is quinone phenols and many alkyl phenols, and conditioning agent is alcohols and isopropyl alcohol; Polynary composite catalyst is potassium peroxydisulfate and Ammonium Persulfate 98.5, and curing agent is ethylene glycol amine and triethanolamine.
Actual measurement paper reinforced effects sees the following form:
Embodiment 3
At one the returning in the neck flask of agitator, thermometer, reflux condenser is housed, adds the converted starch of 15g, 26g polyanion cellulose, 50% acrylamide solution of 140g; 5g acrylic acid, 1.8g carboxylic acid ester, 1.5g acrylonitrile, 0.5g ammoniacal liquor; 0.3g many alkyl phenols, 0.05g alkyl hydrosulfide, 0.015g benzoperoxide and 346g water; Adjust pH is 3, the pH value regulate with hydrochloric acid or sulfuric acid one of them, the reacting by heating mixture is 65 ℃, adds sodium hydrogensulfite; Under this temperature, react slaking 5 hours, discharging.
Aforesaid converted starch is a dextrin, and the pH regulator agent is hydrochloric acid and sulfuric acid, and anti-crosslinking agent is ethene amine and ammoniacal liquor; Reaction suppressor is the quinone phenols; Conditioning agent is an alkyl hydrosulfide, and polynary composite catalyst is benzoyl peroxide and water-soluble azo class, and curing agent is a sodium hydrogensulfite.
Actual measurement paper reinforced effects sees the following form
The above only is preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. papermaking dry strength agent is characterized in that: dry strength agent adopts one-step method to carry out grafting simultaneously with multi-component copolymer reaction process technology is prepared from by following raw materials by weight percent: 0.5～2.5% converted starch, 10-40% polyanion cellulose, 40-84% acrylamide, 1-20% acrylic acid or its ester class, 1-10% carboxylic acid ester, 1-10% acrylonitrile, 1-5% prevent that crosslinking agent, 0.1-1% reaction suppressor, the many first composite catalysts of 0.5-2%, 0.5-2% curing agent and surplus form for the pH regulator agent.
2. papermaking dry strength agent according to claim 1; It is characterized in that: said raw material is: the percentage by weight of converted starch is 1-2%, and the percentage by weight of polyanion cellulose is that the percentage by weight of 15-25%, acrylamide is that the percentage by weight of 60-71%, acrylic acid or its ester class is that the percentage by weight of 5-10%, carboxylic acid ester is that the percentage by weight of 4-6%, acrylonitrile is 4-7%.
3. papermaking dry strength agent according to claim 2 is characterized in that: said converted starch comprises a kind of in oxidized starch, cationic starch, phosphate type amphoteric starch, the dextrin or more than two kinds.
4. papermaking dry strength agent according to claim 3 is characterized in that: said oxidized starch is hypochlorite oxidation starch or hydrogen peroxide oxidation starch.
5. papermaking dry strength agent according to claim 4 is characterized in that: described pH regulator agent is an alkali metal hydroxide, and alkali metal hydroxide is selected from a kind of in NaOH, potassium hydroxide, the rubidium hydroxide or more than two kinds; Or the pH regulator agent is acidic materials, and acidic materials are a kind of of hydrochloric acid, sulfuric acid, acetate, citric acid, oxalic acid or more than two kinds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010577567A CN102121207B (en) | 2010-12-03 | 2010-12-03 | Papermaking dry-strengthening agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010577567A CN102121207B (en) | 2010-12-03 | 2010-12-03 | Papermaking dry-strengthening agent |
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| CN102121207A CN102121207A (en) | 2011-07-13 |
| CN102121207B true CN102121207B (en) | 2012-09-26 |
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| CN201010577567A Active CN102121207B (en) | 2010-12-03 | 2010-12-03 | Papermaking dry-strengthening agent |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617791B (en) * | 2012-03-29 | 2013-11-06 | 上海东升新材料有限公司 | Amphoteric dry strength agent and preparation method thereof |
| CN102627724B (en) * | 2012-03-29 | 2014-05-14 | 上海东升新材料有限公司 | Paper dry intensifier and preparation method thereof |
| CN102627730B (en) * | 2012-03-29 | 2014-01-29 | 上海东升新材料有限公司 | Amphoteric dry strength agent and preparation method thereof |
| CN104894917A (en) * | 2015-06-08 | 2015-09-09 | 浙江华川实业集团有限公司 | Base paper containing dry-strength agent and preparation method of base paper |
| CN105086322A (en) * | 2015-09-29 | 2015-11-25 | 赵迎辉 | Glyoxal cross-linked polymer modified nano crystalline cellulose as well as preparation method and application thereof |
| CN108035199A (en) * | 2017-12-11 | 2018-05-15 | 福建省联盛纸业有限责任公司 | A kind of craft paper and preparation method thereof |
| CN108867175A (en) * | 2018-06-26 | 2018-11-23 | 常州市蓝勖化工有限公司 | A kind of Study of Paper-Strengthening Agent Based |
| CN109594413A (en) * | 2018-11-26 | 2019-04-09 | 苏州恒康新材料有限公司 | It is a kind of for improving the paper making additive of paper tensile strength |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358437A (en) * | 2007-07-05 | 2009-02-04 | 巴斯夫欧洲公司 | Method for producing aqueous suspensions of fine particulate fillers and use thereof for producing papers having a high filler content and a high dry strength |
| CN101815728A (en) * | 2007-08-02 | 2010-08-25 | 赫尔克里士公司 | Modified vinylamine-containing polymers as additives in papermaking |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090871A (en) * | 1994-05-11 | 2000-07-18 | Bayer Aktiengesellschaft | Paper finishing aid |
| US5824190A (en) * | 1995-08-25 | 1998-10-20 | Cytec Technology Corp. | Methods and agents for improving paper printability and strength |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358437A (en) * | 2007-07-05 | 2009-02-04 | 巴斯夫欧洲公司 | Method for producing aqueous suspensions of fine particulate fillers and use thereof for producing papers having a high filler content and a high dry strength |
| CN101815728A (en) * | 2007-08-02 | 2010-08-25 | 赫尔克里士公司 | Modified vinylamine-containing polymers as additives in papermaking |
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