CN100500995C - Sizing agent for treating paper surface and its preparing method and use - Google Patents
Sizing agent for treating paper surface and its preparing method and use Download PDFInfo
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- CN100500995C CN100500995C CNB2006101170240A CN200610117024A CN100500995C CN 100500995 C CN100500995 C CN 100500995C CN B2006101170240 A CNB2006101170240 A CN B2006101170240A CN 200610117024 A CN200610117024 A CN 200610117024A CN 100500995 C CN100500995 C CN 100500995C
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- acrylate
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- paper surface
- sizing agent
- monomer
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- 238000004513 sizing Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 13
- 239000000178 monomer Substances 0.000 claims abstract description 27
- 125000002091 cationic group Chemical group 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 108010010803 Gelatin Proteins 0.000 claims abstract description 12
- 229920000159 gelatin Polymers 0.000 claims abstract description 12
- 239000008273 gelatin Substances 0.000 claims abstract description 12
- 235000019322 gelatine Nutrition 0.000 claims abstract description 12
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 12
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 5
- 238000007720 emulsion polymerization reaction Methods 0.000 claims abstract description 4
- 239000003999 initiator Substances 0.000 claims abstract 3
- 239000000123 paper Substances 0.000 claims description 27
- -1 polyoxyethylene Polymers 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- MPNXSZJPSVBLHP-UHFFFAOYSA-N 2-chloro-n-phenylpyridine-3-carboxamide Chemical compound ClC1=NC=CC=C1C(=O)NC1=CC=CC=C1 MPNXSZJPSVBLHP-UHFFFAOYSA-N 0.000 claims description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 7
- 239000011087 paperboard Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 claims description 4
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 claims description 4
- YOIZTLBZAMFVPK-UHFFFAOYSA-N 2-(3-ethoxy-4-hydroxyphenyl)-2-hydroxyacetic acid Chemical compound CCOC1=CC(C(O)C(O)=O)=CC=C1O YOIZTLBZAMFVPK-UHFFFAOYSA-N 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- NEHMKBQYUWJMIP-UHFFFAOYSA-N anhydrous methyl chloride Natural products ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 3
- 229940044192 2-hydroxyethyl methacrylate Drugs 0.000 claims description 2
- GILMNGUTRWPWSY-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CC(O)COC(=O)C=C GILMNGUTRWPWSY-UHFFFAOYSA-N 0.000 claims description 2
- DGZIMLVEXGVYDW-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(O)COC(=O)C=C DGZIMLVEXGVYDW-UHFFFAOYSA-N 0.000 claims description 2
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 claims description 2
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 claims description 2
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical group CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 2
- GSYWJWFOKRBGQB-UHFFFAOYSA-N N(=O)OC(C)CCCCCC.C(C(=C)C)(=O)O Chemical compound N(=O)OC(C)CCCCCC.C(C(=C)C)(=O)O GSYWJWFOKRBGQB-UHFFFAOYSA-N 0.000 claims description 2
- 229940073608 benzyl chloride Drugs 0.000 claims description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 claims description 2
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 239000011436 cob Substances 0.000 abstract description 7
- 229920002472 Starch Polymers 0.000 abstract description 2
- QROGIFZRVHSFLM-UHFFFAOYSA-N prop-1-enylbenzene Chemical compound CC=CC1=CC=CC=C1 QROGIFZRVHSFLM-UHFFFAOYSA-N 0.000 abstract description 2
- 235000019698 starch Nutrition 0.000 abstract description 2
- 239000008107 starch Substances 0.000 abstract description 2
- 150000003254 radicals Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 22
- 239000000203 mixture Substances 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 150000001768 cations Chemical group 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 229920001353 Dextrin Polymers 0.000 description 3
- 239000004375 Dextrin Substances 0.000 description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 235000019425 dextrin Nutrition 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 3
- 235000005078 Chaenomeles speciosa Nutrition 0.000 description 2
- 240000000425 Chaenomeles speciosa Species 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
The present invention discloses one kind of paper surface sizing agent and its preparation process and application. The preparation process includes the free radical emulsion polymerization of dispersant, emulsifier, initiator, cationic monomer, (methyl) acrylate monomer and (methyl) styrene monomer at 30-95 deg.c for 2-6 hr. The dispersant is gelatin, and the initiator is persulfate. The paper surface sizing agent has high performance and environment friendship, and when it is used together with starch in sizing paper surface, it can raise the ring pressure strength greatly, improve Cobb value obviously and speed the curing obviously.
Description
Technical field
The present invention relates to a kind of sizing agent for treating paper surface and its production and application.
Background technology
The development trend of paper, particularly corrugated paper, paperboard shows:
1) just develops to low grammes per square metre direction from high grammes per square metre.
2) adopt waste paper to replace wood pulp, but become the intensity difference of paper, hygroscopicity value height.
3) because the more paper quality instability that causes of internal sizing variable factor, class are difficult to the problem that improves, make manufacturer less with or abandon internal sizing, the technology that the employing top sizing remedies becomes fashion trend.
The sizing agent that is used for above-mentioned top sizing requires: a) improve ring crush intensity; B) significantly reduce Cobb value (hygroscopicity value); C) slaking speed is fast, and machine is just ripe under requiring.
The disclosed a kind of sizing agent of Chinese patent CN1610708A though can reduce the Cobb value, can not obviously improve ring crush intensity, and slaking speed is slow.
Summary of the invention
The objective of the invention is to propose a kind of sizing agent for treating paper surface and its production and application, to overcome the above-mentioned defective that prior art exists.
Sizing agent pH=2 of the present invention～6, solid content 20%～40%, average grain diameter 20nm～50nm, cationic degree 0.02～0.2.
The preparation method of sizing agent for treating paper surface of the present invention comprises the steps:
Dispersant, emulsifying agent, initator, cationic monomer, (methyl) acrylic ester monomer and (methyl) styrene are carried out free-radical emulsion polymerization, and 30 ℃～95 ℃ following reaction time of condition are 2～6 hours;
Said dispersant is a gelatin, and preferable weight-average molecular weight is 10000～100000 gelatin;
Emulsifying agent is CATION and the compound surfactant of nonionic, preferred C
12～18At least a in alkyl polyoxyethylene (n) trimethyl ammonium chloride (n=5～20) can be adopted the commercially available prod, and the trade mark of producing as road, Henan purifying worker technology Co., Ltd is the product of Gemini cationic surfactant 31551;
Initator is a persulfate, is selected from least a in potassium peroxydisulfate, sodium peroxydisulfate or the ammonium persulfate;
Cationic monomer is selected from least a in Dimethylaminoethyl Methacrylate monochloro methane quaternary ammonium, Dimethylaminoethyl Methacrylate benzyl chloride quaternary ammonium, acrylic acid dimethylamino ethyl ester monochloro methane quaternary ammonium, acrylic acid dimethylamino ethyl ester benzyl chloride quaternary ammonium or the diallyldimethylammonium chloride;
(methyl) acrylic ester monomer is selected from methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, tert-butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-BMA, isobutyl methacrylate, the metering system tert-butyl acrylate, EHMA, acrylic acid-2-ethyl caproite, acrylic acid-2-hydroxyl ethyl ester, acrylic acid-2-hydroxypropyl acrylate, methacrylic acid-2-Octyl Nitrite, at least a in 2-hydroxyethyl methacry-late or methacrylic acid-2-hydroxypropyl acrylate;
In the technique scheme, by weight percentage:
The consumption of gelatin is 2%～20%, (methyl) cinnamic consumption is 20%～70%, the consumption of cationic monomer is 10%～30%, the consumption of (methyl) acrylic ester monomer is 2%～30%, the consumption of the surfactant that CATION and nonionic are compound is 0.2%～5%, the consumption of persulfate is 0.1%～5%, and adding up to weight is 100%.
Described sizing agent for treating paper surface, the surface treatment that can be used to prepare corrugated paper, paperboard or art post paperboard.
As everyone knows, the stability of the system that the adding polyvinyl alcohol can obviously improve, but the inventor finds effect and not obvious in this system, and it is quite obvious to introduce the gelatin effect.On mechanism, the adhesion of big more prepared aqueous dispersion of cationic degree and fiber is strong more, but the inventor finds that cationic degree surpasses 0.2 o'clock adhesion with fiber and reduces on the contrary, therefore cationic degree must be controlled in 0.02～0.2 the scope, and cationic degree can be controlled by the method for regulating the cationic monomer consumption; The compound emulsifying agent of the CATION of introducing and nonionic lacks than common emulsifier for emulsion polymerization consumption, can obviously reduce the Cobb value.For this aqueous dispersion average grain diameter, the inventor finds fast more in 20nm～50nm slaking speed, and surpassing this scope slaking speed then can be slack-off.
Sizing agent for treating paper surface of the present invention is a kind ofly can satisfy the high-performance that paper for surface sizing uses, the product of environmental protection.This product carries out top sizing with starch to paper, can increase substantially the ring crush intensity of paper, significantly improve the Cobb value, obviously accelerates slaking speed.
The specific embodiment
Embodiment 1
In having the 1000ml four-hole boiling flask of condenser, Dropping feeder, agitator, thermometer, add 5 gram-molecular weights and be 10000 gelatin, 250 gram distilled water are warming up to 85 ℃ of dissolvings.Be cooled to 38 ℃.Adding 100 gram weight concentration is the aqueous solution of 25% octadecyl polyoxyethylene (5) trimethyl ammonium chloride, be heated to 95 ℃, add 25 gram weight concentration, 50% ammonium persulfate aqueous solution, the while Dropwise 50 gram weight concentration 50% Dimethylaminoethyl Methacrylate monochloro methane quaternary ammonium aqueous solution and following mix monomer: styrene 175 grams, n-butyl acrylate 20 grams added in 1 hour.In 95 ℃ keep the reaction 1 hour, be cooled to 35 ℃, pH=2.0.Filter through 100 mesh filter screens, get sizing agent for treating paper surface, solid content 39.8%, average grain diameter 20nm (using Malven particle diameter instrument to record), cationic degree 0.13 (adopting the GB12309-90 method to measure).
Embodiment 2
In having the 1000ml four-hole boiling flask of condenser, Dropping feeder, agitator, thermometer, add 20 gram-molecular weights and be 20000 gelatin, 368.4 gram distilled water are warming up to 85 ℃ of dissolvings.Be cooled to 30 ℃.The aqueous solution that adds 0.8 gram, 25% dodecyl polyoxyethylene (20) trimethyl ammonium chloride, the aqueous solution that adds 2 gram weight concentration, 50% potassium peroxydisulfate, drip 60 gram weight concentration, the 50% Dimethylaminoethyl Methacrylate benzyl chloride quaternary ammonium aqueous solution and following mix monomer simultaneously: methyl styrene 20 grams, EHMA 28.8 grams added in 4 hours.In 30 ℃ keep the reaction 2 hours, be cooled to 25 ℃, pH=5.0.Filter through 100 mesh filter screens, get sizing agent for treating paper surface, solid content 20.1%, average grain diameter 29nm (using Malven particle diameter instrument to record), cationic degree 0.2 (adopting the GB12309-90 method to measure).
Embodiment 3
In having the 1000ml four-hole boiling flask of condenser, Dropping feeder, agitator, thermometer, add 15 gram-molecular weights and be 50000 gelatin, 209.75 gram distilled water are warming up to 85 ℃ of dissolvings.Be cooled to 38 ℃.Add 6 grams, 25% cetyl polyoxyethylene (10) the trimethyl ammonium chloride aqueous solution, be heated to 85 ℃, add 4.5 gram weight concentration, 50% sodium persulfate aqueous solution, drip the cationic monomer aqueous solution and mix monomer simultaneously, added in 2 hours.Wherein, the cationic monomer aqueous solution is made up of 20 gram weight concentration, the 50% Dimethylaminoethyl Methacrylate monochloro methane quaternary ammonium aqueous solution and 25 gram weight concentration, the 50% acrylic acid dimethylamino ethyl ester monochloro methane quaternary ammonium aqueous solution; Mix monomer is made up of 63.75 gram styrene and 45 gram methyl methacrylates.In 85 ℃ keep the reaction 1 hour, be cooled to 35 ℃, pH=3.5.Filter through 100 mesh filter screens, get sizing agent for treating paper surface, solid content 29.9%, average grain diameter 40nm (using Malven particle diameter instrument to record), cationic degree 0.02 (adopting the GB12309-90 method to measure).
Embodiment 4
In having the 1000ml four-hole boiling flask of condenser, Dropping feeder, agitator, thermometer, add 10 gram-molecular weights and be 80000 gelatin, 330.63 gram distilled water are warming up to 85 ℃ of dissolvings.Be cooled to 35 ℃.Add 6.4 gram weight concentration, 25% myristyl polyoxyethylene (8) the trimethyl ammonium chloride aqueous solution, be heated to 85 ℃, add 8 gram weight concentration, 50% ammonium persulfate aqueous solution, drip 80 gram weight concentration, the 50% diallyldimethylammonium chloride aqueous solution and following mix monomer simultaneously: methyl styrene 104.4 grams, methyl methacrylate 40 grams added in 2 hours.In 85 ℃ keep the reaction 1 hour, be cooled to 35 ℃, pH=3.5.Filter through 100 mesh filter screens, get sizing agent for treating paper surface, solid content 35.2%, average grain diameter 42nm (using Malven particle diameter instrument to record), CATION 0.07
(adopting the GB12309-90 method to measure).
Embodiment 5
In having the 1000ml four-hole boiling flask of condenser, Dropping feeder, agitator, thermometer, add 15 gram-molecular weights and be 100000 gelatin, 270 gram distilled water are warming up to 75 ℃ of dissolvings.Be cooled to 35 ℃.Add 6 gram weight concentration, 25% myristyl polyoxyethylene (15) the trimethyl ammonium chloride aqueous solution, be heated to 75 ℃, add 1 gram weight concentration, 50% persulfate aqueous solution, drip the cationic monomer aqueous solution and mix monomer simultaneously, added in 2 hours.Wherein, the cationic monomer aqueous solution is made up of 30 gram weight concentration, the 50% diallyldimethylammonium chloride aqueous solution and 20 gram weight concentration, the 50% Dimethylaminoethyl Methacrylate monochloro methane quaternary ammonium aqueous solution; Mix monomer is made up of 56 gram styrene and 2 gram methyl acrylates.In 85 ℃ keep the reaction 1 hour, be cooled to 35 ℃, pH=3.5.Filter through 100 mesh filter screens, get sizing agent for treating paper surface, solid content 35.2%, average grain diameter 47nm (using Malven particle diameter instrument to record), cationic degree 0.12 (adopting the GB12309-90 method to measure).
Embodiment 6
In the upper sheet surface applying glue:
The preparation of dextrin: prepare 500 gram weight concentration, the 10% oxidized starch aqueous solution, be warming up to 90 ℃, gelatinization 20 minutes is cooled to 40 ℃, adds the sizing agent of embodiment 1～5 prescription again, again thin up to 8%.
The Cobb pH-value determination pH:
The XSH type of employing Hangzhou Qingtong Boke Automation Technology Co., Ltd. suddenly absorbability analyzer detects pattern to be measured by the GB/T1540-1989 method.
Ring crush intensity is measured:
Adopt the CT300A compressive strength tester of Hangzhou Qingtong Boke Automation Technology Co., Ltd. to detect pattern to be measured.
A) in the applying glue of corrugated paper upper surface:
Use the dextrin of embodiment 1～5 formulated to be coated with the 10# spreading rod on 120 gram corrugated papers, coating weight is 2g/m
2, in 110 ℃ of baking ovens, dried by the fire 30 seconds or 120 seconds respectively after the coating, take out, be cooled to room temperature and measure.
B) in the applying glue of paperboard upper surface:
Use the dextrin of embodiment 1～5 formulated to be coated with the 10# spreading rod on 350 gram paperboards, coating weight is 2g/m
2, in 110 ℃ of baking ovens, dried by the fire 30 seconds or 120 seconds respectively after the coating, take out, be cooled to room temperature and measure.
From above-mentioned application result as can be seen: use the sizing agent of the embodiment of the invention 1～5 preparation, compare, can increase substantially the ring crush intensity of paper, significantly improve the Cobb value, obviously accelerate slaking speed with comparing sample.
Claims (7)
1. the preparation method of a sizing agent for treating paper surface comprises the steps:
Dispersant, emulsifying agent, initator, cationic monomer, (methyl) acrylate monomer and methyl styrene are carried out free-radical emulsion polymerization, and 30 ℃～95 ℃ following reaction time of condition are 2～6 hours, promptly obtain product;
Said dispersant is a gelatin, and initator is a persulfate;
Emulsifying agent is C
12～18At least a in alkyl polyoxyethylene (n) trimethyl ammonium chloride, n is C
12～18The number of repeat unit of alkyl polyoxyethylene, n is 5～20.
2. method according to claim 1 is characterized in that, the weight average molecular weight of gelatin is 10000～100000.
3 methods according to claim 1, it is characterized in that cationic monomer is selected from least a in Dimethylaminoethyl Methacrylate monochloro methane quaternary ammonium, Dimethylaminoethyl Methacrylate benzyl chloride quaternary ammonium, acrylic acid dimethylamino ethyl ester monochloro methane quaternary ammonium, acrylic acid dimethylamino ethyl ester benzyl chloride quaternary ammonium or the diallyldimethylammonium chloride;
(methyl) acrylate monomer is selected from methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, tert-butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-BMA, isobutyl methacrylate, the metering system tert-butyl acrylate, EHMA, acrylic acid-2-ethyl caproite, acrylic acid-2-hydroxyl ethyl ester, acrylic acid-2-hydroxypropyl acrylate, methacrylic acid-2-Octyl Nitrite, at least a in 2-hydroxyethyl methacry-late or methacrylic acid-2-hydroxypropyl acrylate.
4. according to each described method of claim 1～3, it is characterized in that, by weight percentage:
Dispersant dosage is 2%～20%, the consumption of methyl styrene is 20%～70%, the consumption of cationic monomer is 10%～30%, the consumption of (methyl) acrylate monomer is 2%～30%, the consumption of emulsifying agent is 0.2%～5%, initiator amount is 0.1%～5%, and adding up to weight is 100%.
5. the sizing agent for treating paper surface of each described method preparation of claim 1～4.
6. sizing agent for treating paper surface according to claim 5 is characterized in that, product pH=2～6, solid content 20%～40%, average grain diameter 20nm～50nm, cationic degree 0.02～0.2.
7. according to the application of claim 5 or 6 described sizing agent for treating paper surface, it is characterized in that, be used to prepare the surface treatment of corrugated paper, paperboard or art post paperboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101170240A CN100500995C (en) | 2006-10-11 | 2006-10-11 | Sizing agent for treating paper surface and its preparing method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN102797194A (en) * | 2011-05-26 | 2012-11-28 | 山东贵和显星纸业有限公司 | Moisture-proof agent for paper surface and preparation method for moisture-proof agent |
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| CN102797194A (en) * | 2011-05-26 | 2012-11-28 | 山东贵和显星纸业有限公司 | Moisture-proof agent for paper surface and preparation method for moisture-proof agent |
| CN102797194B (en) * | 2011-05-26 | 2014-09-24 | 山东贵和显星纸业有限公司 | Moisture-proof agent for paper surface and preparation method for moisture-proof agent |
| CN107338677A (en) * | 2017-07-24 | 2017-11-10 | 佛山金盛联合纸业有限公司 | A kind of corrugated paper Cypres and preparation method thereof |
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