CN105178101A - Preparation method of calcium carbonate emulsion sizing agent, sized paper - Google Patents
Preparation method of calcium carbonate emulsion sizing agent, sized paper Download PDFInfo
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- CN105178101A CN105178101A CN201510481669.1A CN201510481669A CN105178101A CN 105178101 A CN105178101 A CN 105178101A CN 201510481669 A CN201510481669 A CN 201510481669A CN 105178101 A CN105178101 A CN 105178101A
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- calcium carbonate
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- sizing agent
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Abstract
The invention discloses a preparation method of a calcium carbonate emulsion sizing agent and a sized paper. Specifically, the preparation method of the calcium carbonate emulsion sizing agent includes: subjecting starch to enzyme digestion and cooking, then adding a surfactant and calcium carbonate into the starch subjected to enzyme digestion and cooking, performing stirring and simultaneously conducting heating to a preset temperature, and carrying out heat preservation for a predetermined period of time, thus obtaining the calcium carbonate emulsion sizing agent. By the method, the cost of the sizing agent is lowered, and the obtained sizing agent is uniform and stable.
Description
Technical field
The present invention relates to field of papermaking, be specifically related to a kind of preparation method, sized paper of calcium carbonate emulsion sizing agent.
Background technology
Surface sizing techniques is one of main, effective method improving paper and paperboard quality, plays very important effect to the physical property of the surface property and modification page that improve page.Top sizing, compared with plasm-glue-blending, can improve the physical strength of paper, the dual character of less paper, and improves the runnability of paper machine, the chemicals content reduced in plain boiled water, improves the deposition of wet end, thus extends the service life of press felt.The kind of Cypres is divided into: natural polymer Cypres, synthetic surface sizing agent, multiple polymers common surface sizing agent etc.
China uses more Cypres to be starch and modified starch, polyvinyl alcohol etc., and other Cypres costs are higher.In recent years, occur calcium carbonate system sizing agent, but current calcium carbonate system sizing agent dispersive property, stability cannot be well solved, thus finally affect sized paper performance.
Summary of the invention
The technical problem that the present invention mainly solves how to solve traditional calcium carbonate system sizing agent free settling, easily flocculates, thus easily produce the technical problem of ill effect to paper surface.
In view of this, the embodiment of the present invention provides a kind of preparation method, sized paper of calcium carbonate emulsion sizing agent, and sizing agent cost is lower than traditional handicraft, and the sizing agent obtained is even, stable.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation method providing a kind of calcium carbonate emulsion sizing agent, and described method comprises: starch is carried out enzyme is cut, boiling; Cut toward described enzyme, add surfactant and calcium carbonate in starch after boiling, be warming up to the predetermined temperature insulation scheduled time while stirring, prepare described calcium carbonate emulsion sizing agent.
Wherein, described surfactant is anion alcohol ether-ether and salt thereof.
Wherein, described anion alcohol ether-ether and salt thereof are at least one in fatty alcohol ether phosphate, phenolic ether phosphate, different tridecyl alcohol phosphate ester, Tryfac 5573, fatty alcohol ether phosphate kalium salt, phenolic ether phosphate kalium salt, different tridecanol ether (6) phosphate kalium salt, Tryfac 5573 sylvite.
Wherein, described calcium carbonate is the calcium carbonate powder of particle diameter≤2um ratio more than 65% or emulsion.
Wherein, be 100 parts in starch oven-dry weight, the addition of described surfactant is 0.1-5 part, and the addition of described calcium carbonate is 5-150 part.
Wherein, while describedly cutting toward described enzyme, adding surfactant and calcium carbonate in starch after boiling, also comprise: cut toward described enzyme, add hardening agent in starch after boiling.
Wherein, described hardening agent is at least one in polyvinyl alcohol, gelatin.
Wherein, described hardening agent is polyvinyl alcohol and gelatin.
Wherein, be 100 parts in described starch oven-dry weight, the addition of described polyvinyl alcohol is 1-30 part, and the addition of described gelatin is 0.1-5 part.
Wherein, described predetermined temperature is 80-95 DEG C, and the described scheduled time is 0.5-4 hour.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the calcium carbonate emulsion sizing agent providing a kind of application rights to require that the method described in any one of 1-10 prepares carries out the sized paper that top sizing obtains.
The invention has the beneficial effects as follows: the situation being different from prior art, the present invention introduces surfactant in traditional calcium carbonate sizing agent.Adding of surfactant, the stability of starch solution can be improved and give starch solution ageing resistance, by the dispersive property of surfactant, calcium carbonate emulsion sizing agent of the present invention being more tending towards evenly, stablizing, emulsion state can be kept for a long time.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preparation method of a kind of calcium carbonate emulsion sizing agent that the embodiment of the present invention provides.
Detailed description of the invention
Refer to Fig. 1, Fig. 1 is the flow chart of the preparation method of a kind of calcium carbonate emulsion sizing agent that the embodiment of the present invention provides, and as shown in the figure, the preparation method of the calcium carbonate emulsion sizing agent of the present embodiment comprises:
S101: starch is carried out enzyme is cut, boiling.
Starch in the embodiment of the present invention can be any one or multiple combination of native cornstarch, cassava ative starch, sweet potato ative starch.
Starch carries out that enzyme is cut, boiling in the following manner: be dissolved in water by starch, control is warmed up to 80-90 DEG C of insulation 0.5-0.7 hour, such as be warmed up to 80 DEG C of insulations 0.5 hour, continue to be warming up to 95-100 DEG C of insulation 1-1.5 hours, such as be warming up to 95 DEG C of insulations 1 hour, the enzyme namely completing starch is cut, digestion process.
S102: cut toward enzyme, add surfactant and calcium carbonate in starch after boiling, be warming up to the predetermined temperature insulation scheduled time while stirring, prepare calcium carbonate emulsion sizing agent.
In the embodiment of the present invention, the preferred short grained calcium carbonate of calcium carbonate.The calcium carbonate powder of preferable particle size in the embodiment of the present invention≤2um ratio more than 65% or emulsion.
Calcium carbonate is as filler, and keep in paper surface by the method for applying glue, retention rate is high, additionally can improve the ash content of paper, reduces production cost.After but calcium carbonate mixes with starch glue application solution, easy generation wadding is poly-, deposited phenomenon, operating difficulties in production process, easy generation pipeline, spray nozzle clogging and be difficult to ensure applying glue even, calcium carbonate bulky grain after wadding is poly-also has a negative impact in the face sense of paper surface on paper and affects follow-up painting work, the more important thing is, glue application layer, because the existence of graininess calcium carbonate, causes the significantly reduction of surface strength of paper.Therefore, how to improve the stability of calcium carbonate system sizing agent, to field of papermaking own profound meaning.
The present invention, by introducing surfactant in calcium carbonate-starch sizing agent, utilizes the high dispersive performance of surfactant, starch-calcium carbonate emulsion sizing agent is tending towards evenly, stablizes, make it keep emulsion state for a long time.Thus can guarantee that applying glue is even, improve paper performance.
Preferred as one of the present invention, in the embodiment of the present invention, surfactant is selected from anion alcohol ether-ether and salt thereof.Such as can be, but not limited to is one or more the combination in fatty alcohol ether phosphate, phenolic ether phosphate, different tridecyl alcohol phosphate ester, Tryfac 5573, fatty alcohol ether phosphate kalium salt, phenolic ether phosphate kalium salt, different tridecanol ether (6) phosphate kalium salt, Tryfac 5573 sylvite.Can be such as a kind of, also can be that the combination of two kinds, three kinds, four kinds is as surfactant.
Because anion alcohol ether-ether and salt thereof are a kind of excellent surfactants, it has outstanding emulsifying agent dispersive property, can be widely used in shampoo, body lotion, cosmetics, after it is made an addition to starch solution of the present invention on a small quantity, the stability of starch solution can be improved and give starch solution ageing resistance.After short grained calcium carbonate adds starch solution, the emulsifiability of anion alcohol ether-ether/salt embodies rapidly, emulsion is formed rapidly after stirring, and have benefited from the superior dispersive property of anion alcohol ether-ether, glue is more tending towards evenly, stable, form starch-calcium carbonate " shampoo ", emulsion state can be kept for a long time.
In embodiments of the present invention, be 100 parts in starch oven-dry weight, the addition of calcium carbonate is preferably 5-150 part, such as 5,10,15,30,50,80,100,120 parts etc., is more preferably 30-70 part, such as 35,40,45,52,68 parts etc.The addition of surfactant is preferably 0.1-5 part, such as 0.2,0.5,1,1.2,2,2.8,3.5,4,4.5 part etc., is more preferably 0.5-3 part.Such as 0.7,1.5,2.2,2.5,3.0 part etc.
As the preferred implementation of one, in the present embodiment, while adding surfactant and calcium carbonate in the starch cutting toward enzyme, after boiling, also comprise: the step of cutting, adding in starch after boiling hardening agent toward enzyme.Adding by hardening agent, the filming performance of sizing agent can be improved further and improve the intensity of paper.
Wherein in a kind of implementation, hardening agent can be selected from the combination of any one or two kinds in PVAC polyvinylalcohol, gelatin.
As a kind of preferred implementation of the present invention, hardening agent is the combination of PVA and two kinds, gelatin.
By adding PVA, PVA can with starch cross-linking reaction, film forming rear surface intensity is good and have and have good grease resistance energy, can improve the intensity of paper after applying glue further.And gelatin adds on a small quantity as third phase component in addition, because the covering power after gelatin film forming and film forming are all better, the intensity that paper is larger can be given, coordinate PVA to use, the filming performance of glue application solution can be improved, improve calcium carbonate granule and keep intensity in paper surface.
Preferred as one, be 100 parts in starch oven-dry weight, the addition of PVA is 1-30 part, such as 1,5,10,18,22,28,30 part etc., is more preferably 5-15 part, such as 5,8,12,15 parts etc.The addition of gelatin is preferably 0.1-5 part, such as 0.1,0.3,0.8,1.5,2,2.6,3.5,4,4.8 part etc., is more preferably 0.8-3 part, such as 1,1.2,1.8,2.5,3 part etc.
In the embodiment of the present invention, predetermined temperature is 80-95 DEG C, and be preferably 90-95 DEG C, the scheduled time is 0.5-4 hour, is preferably 0.5-1.5 hour.By insulation, guarantee that each material is uniformly dispersed on the one hand, on the other hand, be beneficial to PVA and starch generation cross-linking reaction, meanwhile, also prevent added anion alcohol ether-ether and salt Yin Wendu thereof from declining and solidifying further.
The preparation method of the calcium carbonate emulsion sizing agent that the invention described above embodiment provides, introduces surfactant in traditional calcium carbonate sizing agent.Adding of surfactant, the stability of starch solution can be improved and give starch solution ageing resistance, by the dispersive property of surfactant, calcium carbonate emulsion sizing agent of the present invention being more tending towards evenly, stablizing, emulsion state can be kept for a long time.
In addition, on the basis of introducing surfactant and calcium carbonate, further introducing hardening agent PVA and gelatin, by the intensity of paper after applying glue can be improved after PVA and starch cross-linking reaction further, gelatin, as third phase component, only adds on a small quantity, coordinates PVA to use, the filming performance of glue application solution can be improved, improve calcium carbonate granule and keep intensity in paper surface.By such mode, under the prerequisite maintaining surface strength of paper, reduce applying glue cost, PVA consumption is far below traditional starch-application techniques, and the gelatin of high unit price only adds on a small quantity, and simultaneously because of calcium carbonate keeping at paper, the ash content of paper can improve 1-2%.Compared with traditional calcium carbonate emulsion application techniques, thoroughly solve the poor stability problem of sizing agent, after sizing agent of the present invention has been prepared, good dispersion, leaves standstill 24 hours calcium carbonate and there is no deposited phenomenon.Meanwhile, in sizing agent, add PVA, gelatin on a small quantity, by the cross-linking composition of starch-PVA-gelatin, compensate for because calcium carbonate keeps the surface strength loss caused in paper surface.And PVA consumption is lower, PVA and the not thorough issuable plasticizing risk of starch cross-linking reaction also can be avoided.And preparation method of the present invention is workable, consolidating of sizing agent contains, viscosity easily controls, and is applicable to the production technology of multiple paper, is with a wide range of applications.
After the sizing agent above preparation method of the present invention prepared carries out applying glue to paper surface, be conducive to improving grammes per square metre and ash content, the surface strength of page also has obvious lifting.
In order to further illustrate the technique effect of technical scheme of the present invention and generation, further illustrate below by way of several specific embodiment, but this is not in order to limit the scope of the invention.
Embodiment 1
Starch: native cornstarch, 100 parts
Surfactant: fatty alcohol ether phosphoesterase 30 .5 part
30 parts, calcium carbonate, PVA5 part, 0.8 part, gelatin
Native cornstarch is cut after boiling through enzyme, adds PVA, gelatin, surfactant, calcium carbonate, stirs, 90 DEG C of insulation 0.5h, applying glue.
Embodiment 2
Starch: cassava ative starch, 100 parts
Surfactant: different tridecyl alcohol phosphate ester 3 parts
70 parts, calcium carbonate, PVA15 part, 3 parts, gelatin
Cassava ative starch is cut after boiling through enzyme, adds PVA, gelatin, surfactant, calcium carbonate, stirs, 95 DEG C of insulation 1.5h, applying glue.
Embodiment 3
Starch: sweet potato ative starch, 100 parts
Surfactant: phenolic ether phosphate kalium salt 1 part
Carbonic acid Ca45 part, PVA8 part, 1.5 parts, gelatin
Sweet potato ative starch is cut after boiling through enzyme, adds PVA, gelatin, surfactant, calcium carbonate, stirs, 90 DEG C of insulation 1h, applying glue.
Embodiment 4
Starch: sweet potato ative starch, 100 parts
Surfactant: Tryfac 5573 sylvite 2 parts
60 parts, calcium carbonate, PVA10 part, 1.8 parts, gelatin
Sweet potato ative starch is cut after boiling through enzyme, adds PVA, gelatin, surfactant, calcium carbonate, stirs, 95 DEG C of insulation 1h, applying glue.
Comparative example 1
Starch: native cornstarch, 100 parts
Native cornstarch is cut through enzyme, boiling after dryer sizing.
Comparative example 2
Starch: cassava ative starch, 100 parts
70 parts, calcium carbonate
Cassava ative starch is cut through enzyme, add calcium carbonate after boiling, stirs, applying glue.
Comparative example 3
Starch: sweet potato ative starch, 100 parts
Carbonic acid Ca45 part
Cypres: phenolic ether phosphate kalium salt 1 part
Sweet potato ative starch is cut after boiling through enzyme, is added surfactant, calcium carbonate, stirs, 90 DEG C of insulation 1h, applying glue.
Comparative example 4
Starch: sweet potato ative starch, 100 parts
60 parts, calcium carbonate, PVA10 part, 1.8 parts, gelatin
Sweet potato ative starch is cut after boiling through enzyme, adds PVA, gelatin, calcium carbonate, stirs, 95 DEG C of insulation 1h, applying glue.
Relatively the seeing the following form of each performance of paper after the sizing agent that each embodiment and comparative example prepare above carries out applying glue:
As can be known from the above table, simple starch-calcium carbonate sizing agent (comparative example 2) poor stability, calcium carbonate granule floc sedimentation, precipitation in sizing agent, applying glue is uneven, although can improve greyness of paper, loss of strength is larger.Starch-calcium carbonate-surfactant combination (comparative example 3), obviously can promote the stability of sizing agent, but paper strength is not obviously promoted.Starch-calcium carbonate-PVA & gelatin combination (comparative example 4), calcium carbonate floc sedimentation, precipitation aggravation in glue, applying glue operating difficulties, the aggravation of applying glue inequality, paper strength slightly gap compared with embodiment after applying glue.The Cypres (embodiment 1-4) of starch-calcium carbonate that the embodiment of the present invention obtains-surfactant-PVA & gelatin combination, sizing agent good stability, the sizing agent obtained by embodiment carries out applying glue, applying glue is significantly improved the purer starch of intensity ash content (comparative example 1) of paper, and intensity also has lifting.
The preparation method of calcium carbonate emulsion sizing agent provided by the present invention above, sizing agent cost is lower than traditional table adhesive process, PVA addition is less than traditional starch-PVA glue-applying technique, gelatin only needs trace to add, after applying glue operation, body paper ash content improves 1%-2%, by the application of surfactant, overcomes the poor stability of glue in calcium carbonate emulsion Process of Applying Glue, the problem of applying glue inequality, glue leaves standstill 24 hours military precipitations.Simultaneously, add PVA, gelatin on a small quantity in glue, the intensity of paper after applying glue can be promoted after PVA and starch cross-linking reaction, gelatin is as third phase component, only add on a small quantity, coordinate PVA to use, by the cross-linking composition of starch-PVA-gelatin, can improve the filming performance of sizing agent, calcium carbonate granule keeps the intensity in paper surface.
On the basis of the preparation method of above a kind of calcium carbonate emulsion sizing agent provided by the invention, the embodiment of the present invention provides a kind of further and applies calcium carbonate emulsion sizing agent that above-mentioned preparation method prepares and carry out the sized paper that applying glue obtains.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (11)
1. a preparation method for calcium carbonate emulsion sizing agent, is characterized in that, described method comprises:
Starch is carried out enzyme is cut, boiling;
Cut toward described enzyme, add surfactant and calcium carbonate in starch after boiling, be warming up to the predetermined temperature insulation scheduled time while stirring, prepare described calcium carbonate emulsion sizing agent.
2. method according to claim 1, is characterized in that, described surfactant is anion alcohol ether-ether and salt thereof.
3. method according to claim 2, it is characterized in that, described anion alcohol ether-ether and salt thereof are at least one in fatty alcohol ether phosphate, phenolic ether phosphate, different tridecyl alcohol phosphate ester, Tryfac 5573, fatty alcohol ether phosphate kalium salt, phenolic ether phosphate kalium salt, different tridecanol ether (6) phosphate kalium salt, Tryfac 5573 sylvite.
4. method according to claim 1, is characterized in that, described calcium carbonate is the calcium carbonate powder of particle diameter≤2um ratio more than 65% or emulsion.
5. method according to claim 1, is characterized in that, is 100 parts in starch oven-dry weight, and the addition of described surfactant is 0.1-5 part, and the addition of described calcium carbonate is 5-150 part.
6. method according to claim 1, is characterized in that, while describedly cutting toward described enzyme, adding surfactant and calcium carbonate in starch after boiling, also comprises: cut toward described enzyme, add hardening agent in starch after boiling.
7. method according to claim 6, is characterized in that, described hardening agent is at least one in polyvinyl alcohol, gelatin.
8. method according to claim 6, is characterized in that, described hardening agent is polyvinyl alcohol and gelatin.
9. method according to claim 8, is characterized in that, is 100 parts in described starch oven-dry weight, and the addition of described polyvinyl alcohol is 1-30 part, and the addition of described gelatin is 0.1-5 part.
10. the method according to any one of claim 1-9, is characterized in that, described predetermined temperature is 80-95 DEG C, and the described scheduled time is 0.5-4 hour.
The calcium carbonate emulsion sizing agent that method described in 11. 1 kinds of any one of application rights requirement 1-10 prepares carries out the sized paper that top sizing obtains.
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| US20140198166A1 (en) * | 2013-01-11 | 2014-07-17 | Hewlett-Packard Development Company, L.P. | Low grammage recording medium |
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2015
- 2015-08-03 CN CN201510481669.1A patent/CN105178101B/en active Active
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| US8163133B2 (en) * | 2003-04-01 | 2012-04-24 | Akzo Nobel N.V. | Dispersion |
| CN103374857A (en) * | 2012-04-11 | 2013-10-30 | 金东纸业（江苏）股份有限公司 | Sizing agent and preparation method therefor |
| US20140198166A1 (en) * | 2013-01-11 | 2014-07-17 | Hewlett-Packard Development Company, L.P. | Low grammage recording medium |
| CN103526640A (en) * | 2013-09-24 | 2014-01-22 | 天津科技大学 | Pigment surface sizing agent for improving printability of decorative base paper |
| CN103866620A (en) * | 2014-02-25 | 2014-06-18 | 苏州恒康新材料有限公司 | Carboxymethyl starch sizing agent and preparation method thereof |
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