CN105239451A - Preparation method of mineral fiber for papermaking - Google Patents
Preparation method of mineral fiber for papermaking Download PDFInfo
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- CN105239451A CN105239451A CN201510543441.0A CN201510543441A CN105239451A CN 105239451 A CN105239451 A CN 105239451A CN 201510543441 A CN201510543441 A CN 201510543441A CN 105239451 A CN105239451 A CN 105239451A
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Abstract
The invention discloses a preparation method of mineral fibers for papermaking. In the method, a hydroxyl-like group on surface of the mineral fibers is compositely activated through calcium chloride-sodium silicate and then the mineral fibers are subjected to cross-linked gelatination with a hydrophilic high-molecular material to form firm hydrophilic gel on the surface of the mineral fibers. Because the gel has flexibility and an adsorption character, the mineral fibers have toughness, are dispersible in water and are combinable with plant fibers. By means of gelatination to the mineral fibers, the mineral fibers are improved in flexibility for papermaking, dispersibility in paper pulp, and combination force with plant fibers. The mineral fibers can be used in papermaking at a high addition amount of 60%. The mineral fibers are excellent in binding performance with the plant fibers and enables paper to have excellent flexibility. The preparation method greatly helps development of papermaking in which mineral fibers are used for replacing plant fibers.
Description
Technical field
The present invention relates to paper making raw material field, be specifically related to a kind of preparation method of paper grade (stock) gelation mineral fibres.
Background technology
Along with the development of paper technology and the requirement of energy-conserving and environment-protective, mineral fibres becomes the important source material of a kind of alternative string for papermaking.In recent years, about mineral fibres substituted plant fiber is used for the attention that the research of papermaking causes people.Utilize mineral fibres papermaking, the pressure that China cuts down forest can be alleviated to a great extent, save paper pulp, decrease water consumption and environmental destruction that pulping wood brings simultaneously, also reduce papermaking cost, reduce papermaking to the pollution of environment.But mineral fibres is used for papermaking also also exists some defects, the hardness of such as mineral fibres is large, fragility strong, surface is glued without organic group, smooth difficulty, is difficult to be combined with string, causes current mineral fibres limited in the alternative amount of field of papermaking.In order to improve the alternative amount of mineral fibres in field of papermaking, need the flexibility and the cementability under aqueous conditions that solve mineral fibres.By improving flexibility, the cementability of mineral fibres, it is the key technology realizing mineral fibres substituted plant fiber.
The current process to mineral fibres, mainly through surface conditioning agent, softener, dispersant, reinforcing agent etc., to obtain flexibility, the dispersiveness of mineral fibres similar plants fiber, increases the adhesion of mineral fibres and string.
Chinese invention patent CN201310563777.4 discloses a kind of method of modifying increasing white clay fibre strength, by polyvinyl alcohol, water, H
2o
2and NaOH dissolves, and obtains softening intensifier, white clay fiber is added softening intensifier, to stir and after soaking, the intensity of the modified white clay fiber obtained greatly, is a kind of good fiber quality raw material of alternative string.
Chinese invention patent CN201010556422.9 discloses a kind of coal ash fiber and is applied to enhancing method of modifying in paper-making process, reinforcing agent is by polyvinyl alcohol and chloroacetate reaction, regulator solution pH, obtain the poly-vinyl alcohol solution being with carboxylic group, then coal ash fiber is dispersed in reinforcing agent, adds silane coupler, add string papermaking on paper machine trial machine, obtain mixing paper, after modifier treatment coal ash fiber, the intensity that coal ash fiber becomes paper paper can be improved.
Chinese invention patent CN101747471B discloses a kind of preparation method of fly ash fiber reinforced modifier, acrylic acid and hydroxy-ethyl acrylate are carried out copolymerization, again toward wherein adding N, N-dimethyl-1,3-propane diamine carries out amidatioon, obtains the fly ash fiber reinforced modifier of polyhydroxy cation polymer type.With the polyhydroxy cation polymer of preparation, the dispersiveness of coal ash fiber in water can be improved, the adhesion between coal ash fiber and wood pulp or straw pulp fiber can be increased, improve the intensity being mixed with coal ash fiber paper.According to above-mentioned, due to mineral fiber surfaces be weak elecrtonegativity and surface without carboxyl, hydroxyl isoreactivity functional group, be not effectively combined with processbearing astrocyte by charge attraction or hydrogen bond action.And mineral fibres is used for papermaking, owing to there is rigidity, fragility and higher hardness, along with the increase of addition, the toughness of paper reduces, and presence reduces, and paper shows as dry linting, to negative effects such as diddle-net wearing and tearing.Although mineral fibres by soaking in softening agent, can give certain toughness, because mineral fiber surfaces is without organic group, shortage is effectively permeated with softening agent and is connected.Therefore, prior art to after the toughness reinforcing process of mineral fibres for papermaking time, limited to the replacement amount of string.Along with development and the ecological requirements of paper technology, require to increase the amount that mineral fibres replaces string, thus the performance of mineral fibres is had higher requirement.Particularly be badly in need of mineral fibres to be processed into and there is the same flexible fiber of same string.
Summary of the invention
For the problems referred to above, the invention provides a kind of preparation method of paper grade (stock) mineral fibres, the method is by calcium chloride-sodium metasilicate compounding activation by the group of mineral fiber surfaces, and by with hydrophilic high molecular material cross-linked gel, mineral fiber surfaces is made to form firmly gel, mineral fibres toughness given by this cross-linked gel, and easily disperse under aqueous conditions, in papermaking can 60% high addition use, excellent with string intertexture adhesive property, paper still keeps flexible and intensity, advance mineral fibres and replace the process of string for papermaking.
The present invention is achieved through the following technical solutions:
A preparation method for paper grade (stock) mineral fibres, is characterized in that comprising the following steps:
(1) by the mineral fibres of 90-95 weight portion and the calcium chloride of 2-3 weight portion, sodium metasilicate mixed grinding in vibromill of 3-5 weight portion, by applying mechanical energy, make mineral fiber surfaces by advanced activation;
(2) the activation mineral fibres hydrophilic high molecular material of the emulsifying wax of 1-3 weight portion, 5-8 weight portion and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) add the itaconic acid of 0.2-0.5 weight portion, the acrylamide of 1.5-3.5 weight portion and appropriate crosslinking agent in the slurry obtained in step (2), stir under 50-60 DEG C of condition, slowly add initator, cause cross-linking polymerization 20-35min; Dosage of crosslinking agent is the 1-1.5% of acrylamide quality, and initiator amount is the 2-2.5% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
Described mineral fibres is at least one in basalt fibre, wollastonite fibre, coal ash fiber, glass fibre, gypsum fiber, sepiolite fibre, brucite fiber;
The modulus of described sodium metasilicate is 1.5-2.5;
Described emulsifying wax is the beeswax of nonionic;
Described hydrophilic macromolecule macromolecular material is a kind of in shitosan, polyvinyl alcohol, carboxymethyl starch, sodium alginate, guar gum, Artemisia Glue or their mixture;
Described crosslinking agent is the one in N, N-methylene-bisacrylamide, ethylene glycol diacrylate, 1,3-PD double methacrylate, boric acid, epoxychloropropane, glutaraldehyde;
Described initator is the one in ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate.
A kind of preparation method of paper grade (stock) mineral fibres, by activating the class oh group of mineral fiber surfaces, emulsified hydrophilic polymer and mineral fibres are disperseed and cross-linked polymeric, the gel firmly connected is formed at mineral fiber surfaces, mineral fibres pliability given by this cross-linked gel, and easily disperses under aqueous conditions.Because gel has characterization of adsorption, the hydroxyl of this gelation mineral fibres and string fiber surface cellulosic molecule forms hydrogen bond, thus the adhesion that improve between mineral fibres and string and retention, in papermaking can 60% high addition use, excellent with string intertexture adhesive property, paper still keeps flexible, and the tensile strength of paper, bursting strength, tearability etc. are all better than plant fiber paper.This preparation method passes through mineral fibres gelation process, solve mineral fibres for the flexible problem of papermaking, the scattering problem in paper pulp and the adhesion problem with string, significantly advance mineral fibres and replace the process of string for papermaking.
A preparation method for paper grade (stock) mineral fibres, makes mineral fiber surfaces wrap flexible gel, overcomes the papermaking of a large amount of use mineral fibres to the wearing and tearing of gauze.
A preparation method for paper grade (stock) mineral fibres, feature outstanding compared with existing technology and useful effect are:
1, by mineral fiber surfaces deep activation, the class oh group of activated surface, makes material modifiedly firmly to be connected with mineral fibres.
2, utilize cross-linked polymeric, mineral fiber surfaces formed gel, mineral fibres is become the gel that can disperse in water, improve the flexibility of mineral fibres, dispersiveness and with string associativity; Make mineral fibres replacement string be promoted to more than 60% for the replacement amount of papermaking, solve the defect that current mineral fibres is difficult to for papermaking addition improve.
3, preparation technology of the present invention is briefly easily controlled, and serialization can close production, be suitable for large-scale production application.
Detailed description of the invention
Below by way of detailed description of the invention, the present invention is described in further detail, but this should be interpreted as scope of the present invention is only limitted to following example.When not departing from said method thought of the present invention, the various replacement made according to ordinary skill knowledge and customary means or change, all should be within the scope of the present invention.
embodiment 1
This implementation column step is as follows:
(1) by the calcium chloride of the wollastonite fibre of the basalt fibre of 80 weight portions, 10 weight portions and 3 weight portions, 3 weight portion moduluses be 1.5 sodium metasilicate mixed grinding in vibromill, by applying mechanical energy, make mineral fiber surfaces class hydroxyl by advanced activation;
(2) the activation mineral fibres shitosan of the beeswax of the nonionic of 2 weight portions, 5 weight portions, the polyvinyl alcohol of 2 weight portions and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) itaconic acid of 0.2 weight portion, the acrylamide of 1.5 weight portions and appropriate crosslinking agent N is added in the slurry obtained in step (2), N-methylene-bisacrylamide, stir under 50-60 DEG C of condition, slowly add initiator ammonium persulfate, cause cross-linking polymerization 20min; Dosage of crosslinking agent is 1.5% of acrylamide quality, and initiator amount is 2.5% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
The gelation mineral fibres invented by the present embodiment, do not carry out gelation mineral fibres and be mixed for papermaking with 60% addition and paper pulp respectively, preparation contains the art paper of mineral fibres:
| Test item | Quantitatively (g/m 2） | Burst index (kPa.m 2/g） | Folding number (secondary) |
| Add 60% gelation mineral fibres art paper | 120 | 2.9 | 180 |
| Add 60% non-gelation mineral fibres art paper | 120 | 1.6 | 82 |
Comparing result shows, gelation mineral fibres of the present invention is used for papermaking, and its paper flexibility and intensity are apparently higher than non-gelation mineral fibres.
embodiment 2
This implementation column step is as follows:
(1) by the calcium chloride of the coal ash fiber of the wollastonite fibre of 70 weight portions, 20 weight portions and 2 weight portions, 5 weight portion moduluses be 2 sodium metasilicate mixed grinding in vibromill, by applying mechanical energy, make mineral fiber surfaces by advanced activation;
(2) the activation mineral fibres carboxymethyl starch of the beeswax of the nonionic of 3 weight portions, 6 weight portions, the sodium alginate of 1 weight portion and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) itaconic acid of 0.3 weight portion, the acrylamide of 1.5 weight portions and proper amount of glycol double methacrylate is added in the slurry obtained in step (2), stir under 50-60 DEG C of condition, slowly add initator and cross potassium peroxydisulfate, cause cross-linking polymerization 30min; Dosage of crosslinking agent is 1% of acrylamide quality, and initiator amount is 2% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
The gelation mineral fibres invented by the present embodiment, do not carry out gelation mineral fibres and be mixed for papermaking with 60% addition and paper pulp respectively, preparation contains the art post paperboard of mineral fibres:
| Test item | Quantitatively (g/m 2） | Burst index (kPa.m 2/g） | Folding number (secondary) |
| Add 60% gelation mineral fibres art post paperboard | 200 | 2.6 | 153 |
| Add 60% non-gelation mineral fibres art post paperboard | 200 | 1.3 | 65 |
Comparing result shows, gelation mineral fibres of the present invention is used for papermaking, and its paper flexibility and intensity are apparently higher than non-gelation mineral fibres.
embodiment 3
This implementation column step is as follows:
(1) by the calcium chloride of the glass fibre of 95 weight portions and 3 weight portions, 5 weight portion moduluses be 2.5 sodium metasilicate mixed grinding in vibromill, by applying mechanical energy, make mineral fiber surfaces by advanced activation;
(2) the activation mineral fibres guar gum of the beeswax of the nonionic of 3 weight portions, 8 weight portions and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) add the itaconic acid of 0.5 weight portion, the acrylamide of 1.5 weight portions and appropriate boric acid in the slurry obtained in step (2), stir under 50-60 DEG C of condition, slowly add initator and cross sodium peroxydisulfate, cause cross-linking polymerization 35min; Dosage of crosslinking agent is 1% of acrylamide quality, and initiator amount is 2% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
The gelation mineral fibres invented by the present embodiment, do not carry out gelation mineral fibres and be mixed for papermaking with 60% addition and paper pulp respectively, preparation contains the brown paper of mineral fibres:
| Test item | Quantitatively (g/m 2） | Burst index (kPa.m 2/g） | Folding number (secondary) |
| Add 60% gelation mineral fibres brown paper | 85 | 3.4 | 311 |
| Add 60% non-gelation mineral fibres brown paper | 85 | 2.1 | 162 |
Comparing result shows, gelation mineral fibres of the present invention is used for papermaking, and its paper flexibility and intensity are apparently higher than non-gelation mineral fibres.
embodiment 4
This implementation column step is as follows:
(1) by the calcium chloride of the brucite fiber of the coal ash fiber of 75 weight portions, 15 weight portions and 2 weight portions, 4 weight portion moduluses be 2.5 sodium metasilicate mixed grinding in vibromill, by applying mechanical energy, make mineral fiber surfaces by advanced activation;
(2) the activation mineral fibres sodium alginate of the beeswax of the nonionic of 3 weight portions, 5 weight portions, the Artemisia Glue of 1 weight portion and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) add the itaconic acid of 0.5 weight portion, the acrylamide of 1.5 weight portions and appropriate glutaraldehyde in the slurry obtained in step (2), stir under 50-60 DEG C of condition, slowly add initiator ammonium persulfate, cause cross-linking polymerization 35min; Dosage of crosslinking agent is 1.5% of acrylamide quality, and initiator amount is 2.5% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
The gelation mineral fibres invented by the present embodiment, do not carry out gelation mineral fibres and be mixed for papermaking with 60% addition and paper pulp respectively, preparation contains the base board of mineral fibres:
| Test item | Quantitatively (g/m 2） | Burst index (kPa.m 2/g） | Folding number (secondary) |
| Add 60% gelation mineral fibres base board | 350 | 2.5 | 109 |
| Add 60% non-gelation mineral fibres base board | 350 | 1.1 | 52 |
Comparing result shows, gelation mineral fibres of the present invention is used for papermaking, and its paper flexibility and intensity are apparently higher than non-gelation mineral fibres.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a preparation method for paper grade (stock) mineral fibres, is characterized in that comprising the following steps:
(1) by the mineral fibres of 90-95 weight portion and the calcium chloride of 2-3 weight portion, sodium metasilicate mixed grinding in vibromill of 3-5 weight portion, by applying mechanical energy, make mineral fiber surfaces by advanced activation;
(2) the activation mineral fibres hydrophilic high molecular material of the emulsifying wax of 1-3 weight portion, 5-8 weight portion and step (1) obtained and suitable quantity of water stir 0.5-1h and form slurry under 80-90 DEG C of condition;
(3) itaconic acid of 0.2-0.5 weight portion, the acrylamide of 1.5-3.5 weight portion and appropriate crosslinking agent is added in the slurry obtained in step (2), stir under 50-60 DEG C of condition, slowly add initator, cause cross-linking polymerization 20-35min, dosage of crosslinking agent is the 1-1.5% of acrylamide quality, and initiator amount is the 2-2.5% of acrylamide quality;
(4) material that step (3) obtains is carried out filtering means dehydration, oven dry, pulverizing mill pulverize obtain paper grade (stock) gelation mineral fibres.
2. the preparation method of a kind of paper grade (stock) mineral fibres according to claim 1, is characterized in that: described mineral fibres is at least one in basalt fibre, wollastonite fibre, coal ash fiber, glass fibre, gypsum fiber, sepiolite fibre, brucite fiber.
3. the preparation method of a kind of paper grade (stock) mineral fibres according to claim 1, is characterized in that: the modulus of described sodium metasilicate is 1.5-2.5.
4. the preparation method of a kind of paper grade (stock) gelation mineral fibres according to claim 1, is characterized in that: described emulsifying wax is the beeswax of nonionic.
5. the preparation method of a kind of paper grade (stock) mineral fibres according to claim 1, is characterized in that: described hydrophilic high molecular material is a kind of in shitosan, polyvinyl alcohol, carboxymethyl starch, sodium alginate, guar gum, Artemisia Glue or their mixture.
6. the preparation method of a kind of paper grade (stock) mineral fibres according to claim 1, it is characterized in that: described crosslinking agent is N, one in N-methylene-bisacrylamide, ethylene glycol diacrylate, 1,3-PD double methacrylate, boric acid, epoxychloropropane, glutaraldehyde.
7. the preparation method of a kind of paper grade (stock) mineral fibres according to claim 1, is characterized in that: described initator is the one in ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048769A (en) * | 2016-07-20 | 2016-10-26 | 盱眙恒泰矿业科技有限公司 | Preparation method of polypropylene-attapulgite composite fiber for papermaking |
| CN107893330A (en) * | 2017-12-28 | 2018-04-10 | 安徽宏实光机电高科有限公司 | A kind of preparation method of plasma grafting processing complex fiber material |
| CN108221471A (en) * | 2018-01-22 | 2018-06-29 | 王家浩 | A kind of polymer modification paper making pulp |
| CN111730916A (en) * | 2020-07-03 | 2020-10-02 | 合肥宏图彩印有限公司 | Production process for preparing high-strength corrugated packing paper by using mineral fibers |
| CN112522986A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Adsorption type inorganic combined fiber paper and preparation method thereof |
| CN112522996A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Toughened inorganic paper and preparation method thereof |
| CN115491927A (en) * | 2022-09-28 | 2022-12-20 | 福建星城纸业有限公司 | High-strength copy paper and production method thereof |
| CN115538208A (en) * | 2022-10-08 | 2022-12-30 | 江西省芦林纸业股份有限公司 | Preparation process of environment-friendly recycled paper |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048769A (en) * | 2016-07-20 | 2016-10-26 | 盱眙恒泰矿业科技有限公司 | Preparation method of polypropylene-attapulgite composite fiber for papermaking |
| CN107893330A (en) * | 2017-12-28 | 2018-04-10 | 安徽宏实光机电高科有限公司 | A kind of preparation method of plasma grafting processing complex fiber material |
| CN108221471A (en) * | 2018-01-22 | 2018-06-29 | 王家浩 | A kind of polymer modification paper making pulp |
| CN111730916A (en) * | 2020-07-03 | 2020-10-02 | 合肥宏图彩印有限公司 | Production process for preparing high-strength corrugated packing paper by using mineral fibers |
| CN112522986A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Adsorption type inorganic combined fiber paper and preparation method thereof |
| CN112522996A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Toughened inorganic paper and preparation method thereof |
| CN112522996B (en) * | 2020-11-27 | 2022-12-23 | 山东鲁阳节能材料股份有限公司 | Toughened inorganic paper and preparation method thereof |
| CN115491927A (en) * | 2022-09-28 | 2022-12-20 | 福建星城纸业有限公司 | High-strength copy paper and production method thereof |
| CN115491927B (en) * | 2022-09-28 | 2023-11-10 | 福建星城纸业有限公司 | High-strength copy paper and production method thereof |
| CN115538208A (en) * | 2022-10-08 | 2022-12-30 | 江西省芦林纸业股份有限公司 | Preparation process of environment-friendly recycled paper |
| CN115538208B (en) * | 2022-10-08 | 2023-11-24 | 江西省芦林纸业股份有限公司 | Preparation process of environment-friendly recycled paper |
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Effective date of registration: 20170810 Address after: 226500 fifteen groups of Qianjin community, Bai Pu town, Nantong City, Jiangsu, Rugao Patentee after: JIANGSU MIAOWEI PAPER INDUSTRY CO.,LTD. Address before: Qingyang District of Chengdu City, Sichuan province 610091 Dragon Industrial Port East Road 4 Patentee before: CHENDU NEW KELI CHEMICAL SCIENCE Co.,Ltd. CHINA |
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Denomination of invention: A preparation method of mineral fiber for papermaking Effective date of registration: 20210712 Granted publication date: 20170301 Pledgee: Bank of China Limited Rugao Branch Pledgor: JIANGSU MIAOWEI PAPER INDUSTRY Co.,Ltd. Registration number: Y2021980005984 |
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Date of cancellation: 20220708 Granted publication date: 20170301 Pledgee: Bank of China Limited Rugao Branch Pledgor: JIANGSU MIAOWEI PAPER INDUSTRY CO.,LTD. Registration number: Y2021980005984 |
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