CN115852736A - Coating using yellow stone pigment and application thereof - Google Patents
Coating using yellow stone pigment and application thereof Download PDFInfo
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- CN115852736A CN115852736A CN202211659797.7A CN202211659797A CN115852736A CN 115852736 A CN115852736 A CN 115852736A CN 202211659797 A CN202211659797 A CN 202211659797A CN 115852736 A CN115852736 A CN 115852736A
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- 239000004575 stone Substances 0.000 title claims abstract description 83
- 239000000049 pigment Substances 0.000 title claims abstract description 49
- 238000000576 coating method Methods 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000227 grinding Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000002174 Styrene-butadiene Substances 0.000 claims abstract description 6
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004816 latex Substances 0.000 claims abstract description 6
- 229920000126 latex Polymers 0.000 claims abstract description 6
- 239000011115 styrene butadiene Substances 0.000 claims abstract description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 6
- -1 polyoxyethylene nonyl phenol phosphate Polymers 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 229920002472 Starch Polymers 0.000 claims abstract description 4
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 4
- 239000008107 starch Substances 0.000 claims abstract description 4
- 235000019698 starch Nutrition 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 239000000123 paper Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 5
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000003899 bactericide agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- XBTYSBUGTSUGJM-UHFFFAOYSA-N methyl prop-2-enoate;sodium Chemical compound [Na].COC(=O)C=C XBTYSBUGTSUGJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- SZHIIIPPJJXYRY-UHFFFAOYSA-M sodium;2-methylprop-2-ene-1-sulfonate Chemical compound [Na+].CC(=C)CS([O-])(=O)=O SZHIIIPPJJXYRY-UHFFFAOYSA-M 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000004438 eyesight Effects 0.000 abstract description 3
- 239000011111 cardboard Substances 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000006081 fluorescent whitening agent Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011087 paperboard Substances 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
- 239000002562 thickening agent Substances 0.000 description 2
- AKUNSTOMHUXJOZ-UHFFFAOYSA-N 1-hydroperoxybutane Chemical compound CCCCOO AKUNSTOMHUXJOZ-UHFFFAOYSA-N 0.000 description 1
- 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
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241000274582 Pycnanthus angolensis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002356 laser light scattering Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
The invention provides a coating using a yellow stone pigment, which comprises the following components in parts by weight: 20-80 parts of yellow stone pigment, 10-60 parts of heavy calcium carbonate slurry, 5-20 parts of styrene-butadiene latex, 0-10 parts of coating starch and 2-5 parts of auxiliary materials, wherein the preparation method of the yellow stone pigment comprises the steps of grinding the yellow stone to 280-400 meshes of stone powder, dispersing the stone powder in water containing a composite dispersing agent, stirring at a high speed, and then carrying out wet superfine grinding until the content of particles with the pigment granularity of less than 2 mu m reaches 50-98%; wherein the composite dispersant consists of 40-60% of polyoxyethylene nonyl phenol phosphate, 30-50% of sodium lignosulfonate and 5-15% of acrylic acid-styrene copolymer. The invention uses the low-whiteness yellow stone pigment, so that the coated paper can achieve the effect of protecting eyesight of the original paper, can improve the printing quality, and can solve the problem of environment-friendly utilization of mine waste stones.
Description
Technical Field
The invention relates to the technical field of papermaking coatings, in particular to a coating using a yellow stone pigment and application thereof in coated paper.
Background
At present, in order to seek high whiteness of paper, a large amount of fluorescent whitening agent is added into pulp in domestic paper making enterprises, and the fluorescent whitening agent is used for a few kilograms and a dozen kilograms. In the paper industry of China, fluorescent whitening agents are basically added in the production of products such as cultural paper, printing paper, paperboard and the like, and the fluorescent whitening agents are strictly forbidden to be used in the processing of foods and food-related products according to the food additive use health standard and related national food safety management regulations such as food container additive health standard.
The most popular white paper in the world today is the unbleached paper with 83% whiteness, because the unbleached paper can protect the earth and the eyeball. Therefore, it is necessary to develop a coating, which effectively utilizes the low-whiteness yellow stone pigment, so that the coated paper achieves the effect of protecting the eyesight of the natural-color paper, can improve the printing quality, and can solve the problem of environmental protection and utilization of mine waste stones. However, the viscosity of the ultrafine grinding of the yellow stone is greatly improved, and the yellow stone is difficult to be mixed with other coating raw materials, so that the practical application is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a coating using a yellow stone pigment and an application thereof, so as to solve the technical problems in the prior art.
The invention is realized by adopting the following technical scheme:
a coating using a yellow stone pigment comprises the following components in parts by weight: 20-80 parts of yellow stone pigment, 10-60 parts of heavy calcium carbonate slurry, 5-20 parts of styrene-butadiene latex, 0-10 parts of coating starch and 2-5 parts of auxiliary materials, wherein the preparation method of the yellow stone pigment comprises the following steps:
s1, crushing a yellow stone block into crushed stones with the diameter of 2-3 cm;
s2, grinding the crushed stone to 280-400 meshes of stone powder;
s3, dispersing the stone powder in water containing a composite dispersing agent, and stirring at a high speed to prepare a pre-dispersion suspension;
s4, carrying out wet superfine grinding on the pre-dispersed suspension until the content of particles with the pigment granularity of less than 2 mu m reaches 50-98%, and stopping grinding to obtain the yellow stone pigment;
the composite dispersant comprises the following components in percentage by weight: 40-60% of polyoxyethylene nonyl phenol phosphate (CAS: 51811-79-1), 30-50% of sodium lignosulfonate (CAS: 8061-51-6) and 5-15% of acrylic acid-styrene copolymer, wherein the sum of the weight percentages of the components is 100%;
the acrylic acid-styrene copolymer is copolymerized by the following monomers in parts by weight: 30-40 parts of acrylic acid, 20-30 parts of styrene, 10-15 parts of sodium methallyl sulfonate and 2-5 parts of acrylamide.
Further, the acrylic-styrene copolymer may be synthesized using radical copolymerization reaction conventional in the art, for example, by the following method: dissolving an initiator in water and heating to 60-85 ℃; simultaneously dripping acrylic acid, styrene, sodium methyl acrylate sulfonate and acrylamide into the initiator aqueous solution; after all the materials are added, the temperature is raised to 80-95 ℃, and the temperature is kept for 30-120 minutes, so that the acrylic acid-styrene copolymer is obtained. The initiator may be one commonly used in the art, such as, but not limited to: ammonia persulfate, sodium persulfate, potassium persulfate, hydrogen peroxide, butyl hydroperoxide, ditert-butyl peroxide, dibenzoyl peroxide, azobisisobutyronitrile.
The whiteness of the yellow stone pigment is not higher than 70%, the solid content is 65-75%, and the viscosity is 100-300mPa.s.
The inventor unexpectedly finds that the composite dispersing agent compounded by specific components is used for wet superfine grinding of the yellow stone, the viscosity of the system can be greatly reduced, and the prepared yellow stone pigment has high solid content, fine particle size, good dispersibility, good slurry stability and low viscosity. The coating is used for preparing coating for coated paper and can meet the requirements of the papermaking field.
Further, the auxiliary materials are one or more of water repellent agents, lubricating agents, bactericides and defoaming agents. The selection of the auxiliary materials is determined according to the actual application requirements and the use scenes of the product, as long as the application effect of the coating is not influenced. The water repellent agent, the lubricant, the bactericide and the defoaming agent can be selected from the components which are conventional in the field. Of course, other auxiliary materials such as dispersing agents, thickening agents, dyes and the like can also be added according to actual needs.
Preferably, the rotation speed of the high-speed stirring in the step S3 is 500-1200r/min, and the stirring time is 10-30min.
Furthermore, the dosage of the composite dispersant is 0.2-1.0% of the weight of the stone powder. Preferably 0.5-0.8%, more preferably 0.6-0.7%.
Further, the grinding rotation speed in the step S4 is 1000-2000r/min, and the grinding time is 30-120min.
As a preferable technical scheme, in the wet superfine grinding process of the step S4, a composite dispersant accounting for 0.5 to 2.0 percent of the weight of the stone powder is added.
In step S4, the pre-dispersed suspension may be subjected to wet superfine grinding by using a grinding apparatus such as a sand mill, a flaking mill, a ball mill, etc. commonly used in the art. Grinding typically requires the addition of grinding media such as zirconia beads, zirconium silicate beads, alumina beads, cast iron balls, alloy steel balls, and the like. The ratio of grinding medium to stone dust is preferably 2-8.
The second aspect of the present invention is to provide the use of the above-described coating material using a yellow stone pigment for coating paper for paper coating of coated paper, light coated paper, white board, white cardboard or boxboard.
The invention uses the low-whiteness yellow stone pigment, so that the coated paper can achieve the effect of protecting eyesight of the original paper, can improve the printing quality, and can solve the problem of environment-friendly utilization of mine waste stones.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are intended to be illustrative only and are not intended to be limiting as other obvious modifications may occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
The apparatus or raw materials in the present invention are not indicated by manufacturers, and are all conventional commercial apparatuses or raw materials.
The composite dispersant used in the examples was composed of 55% polyoxyethylene nonylphenol phosphate, 35% sodium lignosulfonate and 10% acrylic acid-styrene copolymer. The acrylic acid-styrene copolymer is prepared by the following method:
dissolving 3 parts of initiator potassium persulfate in 180 parts of water and heating to 80 ℃; dripping 40 parts of acrylic acid, 25 parts of styrene, 12 parts of sodium methacrylate and 3 parts of acrylamide into the initiator aqueous solution simultaneously; after all the materials are added, the temperature is raised to 95 ℃, the temperature is kept for 100 minutes, and the acrylic acid-styrene copolymer is obtained after discharging.
The detection indexes related to the embodiment of the invention are detected by adopting a conventional detection method in the field if not mentioned. The particle size is detected by a laser light scattering particle size analyzer, and the viscosity is detected by an NDJ-1 type rotational viscometer.
Example 1
Crushing mine yellow stone by using a jaw crusher until the mine yellow stone is crushed into crushed stone with the diameter of about 2cm, and then grinding the crushed stone to 400 meshes by using a Raymond mill for use. The stone powder is dispersed in water containing 0.6 percent of composite dispersant, and is stirred at high speed to prepare pre-dispersed suspension with the solid content of 75 percent. Grinding medium with the weight 2.2 times that of the suspension is added according to the proportion for grinding, the composite dispersant is dripped in the grinding process, the dosage is 1.2 percent, the grinding is stopped when the content of the particles with the pigment granularity less than 2 mu m reaches 95 percent (95-grade yellow stone pigment), and the machine is stopped for discharging.
The 95-grade yellow stone pigment is detected to have 75 percent of solid content, 68.5 percent of whiteness, 95.08 percent of particle size (the volume percentage of particles with the particle content of less than 2 mu m) and 135mPa.s of viscosity.
The application method of the yellow stone pigment is as follows:
35 parts of 95-grade yellow stone pigment, 50 parts of heavy calcium carbonate slurry, 11 parts of styrene-butadiene latex and 4 parts of auxiliary materials. The auxiliary materials specifically comprise: 1.5 parts of papu water repellent agent, 0.7 part of calcium stearate lubricant, 0.7 part of anionic carboxylate dispersant, 0.5 part of natural cellulose thickener, 0.1 part of bactericide, 0.2 part of defoamer, 0.1 part of dye and 0.2 part of liquid alkali.
Comparative example 1
The same procedure as in example 1 was repeated except that a conventional sodium polyacrylate dispersant (CAS: 9003-04-7) was used in place of the composite dispersant. The method comprises the following specific steps:
crushing mine yellow stone by using a jaw crusher until the mine yellow stone is crushed into crushed stone with the diameter of about 2cm, and then grinding the crushed stone to 400 meshes by using a Raymond mill for use. The stone powder is dispersed in water containing 0.6 percent of sodium polyacrylate dispersant, and is stirred at high speed to prepare pre-dispersed suspension with the solid content of 75 percent. Grinding medium with 2.2 times of the weight of the suspension is added according to the proportion for grinding, sodium polyacrylate dispersant is added in the grinding process, the dosage is 1.2 percent, the grinding is stopped when the content of the particles with the pigment granularity of less than 2 mu m reaches 95 percent (95-grade yellow stone pigment), and the machine is stopped for discharging.
The 95-grade yellow stone pigment is detected to have 75 percent of solid content, 68.9 percent of whiteness, 95.08 percent of particle size (volume percentage of particles with the particle size less than 2 mu m), and 970mPa.s of viscosity. The viscosity is too high for subsequent coating applications.
Comparative example 2
85 parts of heavy calcium carbonate slurry, 11 parts of styrene-butadiene latex and 4 parts of auxiliary materials. The composition of the auxiliary materials was the same as in example 1.
The coatings prepared in the example 1 and the comparative example 2 are respectively coated on the surface of the copperplate base paper, and after the coatings are dried, corresponding coated paper is prepared. The prepared coated paper is stored under the conditions of constant temperature and constant humidity (the temperature is 23 ℃ plus or minus 1 ℃ and the humidity is 50 percent plus or minus 2 percent). Copperplate base paper quantitative weight 105g/m 2 Coating weight 10g/m 2 . The detection results are shown in table 1:
TABLE 1 comparison of coated paper indexes with different coatings
| Index (I) | Comparative example 2 | Example 1 |
| Whiteness% | 93.0 | 84.5 |
| Surface strength m/s | 1.25 | 1.35 |
| Ink absorbency% | 11 | 13 |
| Coating gloss% | 58 | 59 |
| Print gloss% | 83 | 88 |
The coating using the yellow stone pigment is applied to coated paper to replace part of heavy calcium carbonate, so that the surface strength, the ink absorbability and the printing glossiness of the paper can be improved, and the printing adaptability of the paper can be improved. The reduction in whiteness is visually more pleasing.
Example 2
Crushing the mine yellow stone by using a jaw crusher until the mine yellow stone is crushed into crushed stone with the diameter of about 3cm, and then grinding the crushed stone to 280 meshes by using a Raymond mill for use. The stone powder is dispersed in water containing 0.3 percent of composite dispersant, and is stirred at high speed to prepare pre-dispersed suspension with the solid content of 70 percent. Grinding medium with the weight 2.2 times that of the suspension is added according to the proportion for grinding, the composite dispersant is dripped in the grinding process, the dosage is 0.3 percent, the grinding is stopped when the content of particles with the pigment granularity less than 2 mu m reaches 55 percent (55-grade yellow stone pigment), and the machine is stopped for discharging.
The solid content of the 55-grade yellow stone pigment is 72 percent, the whiteness is 45.0 percent, and the particle size (the volume percentage of particles with the particle size less than 2 mu m) is 55.18 percent.
The application method of the yellow stone pigment is as follows:
70 parts of 55-grade yellow stone pigment, 15 parts of heavy calcium carbonate slurry, 6 parts of styrene-butadiene latex, 5 parts of coating starch and 4 parts of auxiliary materials. The composition of the auxiliary materials was the same as in example 1.
The coating prepared in example 2 was coated on the surface of cardboard paper, and after the coating was dried, the corresponding coated paper was prepared. The prepared coated paper is stored under the conditions of constant temperature and constant humidity (the temperature is 23 ℃ plus or minus 1 ℃ and the humidity is 50 percent plus or minus 2 percent). Carton board basis weight 150g/m 2 Coating weight 8g/m 2 . The detection results are shown in table 2:
TABLE 1 test results of the decomposition rate of hydrogen peroxide in different samples
| Index (I) | Blank sample (uncoated) | Example 2 |
| Whiteness% | 23.16 | 38.75 |
| Surface strength m/s | 0.2 | 1.0 |
| Ink absorbency% | 23 | 15 |
| Coating gloss% | 7 | 23 |
| Print gloss% | 12 | 38 |
The coating using the yellow stone pigment is applied to the cardboard paper, and compared with the cardboard paper which is not coated, the whiteness, the surface strength and the printing glossiness of the paper can be improved, and the printing adaptability of the paper is improved. The improvement of the surface strength can improve the printing speed, the printing glossiness and the coating glossiness, can highlight the effect of printed matters and improve the quality grade of the cardboard paper. Meanwhile, part of mine waste rocks can be utilized, the problem of waste rock utilization is solved, the pollution to the environment and the occupation of farmlands and lands are reduced, and the method is beneficial to the national society.
It will be appreciated by persons skilled in the art that the above examples are given by way of illustration only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. The coating using the yellow stone pigment is characterized by comprising the following components in parts by weight: 20-80 parts of yellow stone pigment, 10-60 parts of heavy calcium carbonate slurry, 5-20 parts of styrene-butadiene latex, 0-10 parts of coating starch and 2-5 parts of auxiliary materials, wherein the preparation method of the yellow stone pigment comprises the following steps:
s1, crushing a yellow stone block into crushed stones with the diameter of 2-3 cm;
s2, grinding the crushed stone to 280-400 meshes of stone powder;
s3, dispersing the stone powder in water containing a composite dispersing agent, and stirring at a high speed to prepare a pre-dispersion suspension;
s4, carrying out wet superfine grinding on the pre-dispersed suspension until the content of particles with the pigment granularity of less than 2 mu m reaches 50-98%, and stopping grinding to obtain the yellow stone pigment;
the composite dispersant comprises the following components in percentage by weight: 40-60% of polyoxyethylene nonyl phenol phosphate, 30-50% of sodium lignosulfonate and 5-15% of acrylic acid-styrene copolymer, wherein the sum of the weight percentages of the components is 100%;
the acrylic acid-styrene copolymer is copolymerized by the following monomers in parts by weight: 30-40 parts of acrylic acid, 20-30 parts of styrene, 10-15 parts of sodium methallyl sulfonate and 2-5 parts of acrylamide.
2. The coating material using a yellow stone pigment according to claim 1, wherein the acrylic acid-styrene copolymer is prepared by the following method: dissolving an initiator in water and heating to 60-85 ℃; simultaneously dripping acrylic acid, styrene, sodium methyl acrylate sulfonate and acrylamide into the initiator aqueous solution; after all the materials are added, the temperature is raised to 80-95 ℃, and the temperature is kept for 30-120 minutes, so that the acrylic acid-styrene copolymer is obtained.
3. The coating material using a yellow stone pigment according to claim 1, wherein the yellow stone pigment has a whiteness of not more than 70%, a solid content of 65 to 75%, and a viscosity of 100 to 300mpa.s.
4. The coating material using a yellow stone pigment according to claim 1, wherein the auxiliary material is one or more of a water repellent agent, a lubricant, a bactericide, and an antifoaming agent.
5. The coating material using a yellow stone pigment as set forth in claim 1, wherein the high speed stirring in the step S3 is performed at a rotation speed of 500 to 1200r/min for a stirring time of 10 to 30min.
6. The coating material using a yellow stone pigment according to claim 1, wherein the amount of the composite dispersant is 0.2 to 1.0% by weight of the stone powder.
7. The coating material using a yellow stone pigment according to claim 1, wherein the grinding rotation speed in the step S4 is 1000 to 2000r/min and the grinding time is 30 to 120min.
8. The coating material using a yellow stone pigment according to claim 1, wherein the composite dispersant is additionally added in an amount of 0.5 to 2.0% by weight based on the weight of the stone powder in the wet ultra-fine grinding process of step S4.
9. The coating material using a yellow stone pigment according to claim 1, wherein the grinding media is added at the time of grinding in step S4, and the ratio of the grinding media to the stone powder is 2 to 8.
10. Use of a coating using a yellow stone pigment prepared according to the process of any one of claims 1 to 9 in coating paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN111138888A (en) * | 2019-12-25 | 2020-05-12 | 济宁明升新材料有限公司 | Special calcium carbonate filler for environment-friendly cultural paper and preparation method thereof |
| CN114621605A (en) * | 2022-02-28 | 2022-06-14 | 上海东升新材料有限公司 | Mixed calcium carbonate filler and preparation method thereof |
| CN115074005A (en) * | 2022-07-25 | 2022-09-20 | 佛山市惟欣科技有限公司 | Novel wear-resistant anticorrosive paint and preparation method thereof |
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| CN1221833A (en) * | 1998-10-22 | 1999-07-07 | 姚桂华 | Paper-making compound paint and its prepn. method |
| CN101210398A (en) * | 2007-12-24 | 2008-07-02 | 上海东升新材料有限公司 | Dope used as primary coat, floating coat and top coat of non-surface-slurry coating paper |
| CN102964880A (en) * | 2012-11-29 | 2013-03-13 | 辽宁艾海滑石有限公司 | Modified talcum for papermaking coating and preparation method thereof |
| CN104119701A (en) * | 2013-04-27 | 2014-10-29 | 中国地质大学（北京） | Preparation method for inorganic composite white pigment capable of replacing titanium dioxide at high proportion |
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| CN109266159A (en) * | 2018-08-16 | 2019-01-25 | 江苏欣安新材料技术有限公司 | A kind of aqueous brake disc coating of high anti-corrosion high heat resistance and its preparation process |
| CN111138888A (en) * | 2019-12-25 | 2020-05-12 | 济宁明升新材料有限公司 | Special calcium carbonate filler for environment-friendly cultural paper and preparation method thereof |
| CN114621605A (en) * | 2022-02-28 | 2022-06-14 | 上海东升新材料有限公司 | Mixed calcium carbonate filler and preparation method thereof |
| CN115074005A (en) * | 2022-07-25 | 2022-09-20 | 佛山市惟欣科技有限公司 | Novel wear-resistant anticorrosive paint and preparation method thereof |
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| CN115852736B (en) | 2024-01-05 |
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