CN112442917A - Preparation method of surface sizing solution and watercolor drawing paper - Google Patents
Preparation method of surface sizing solution and watercolor drawing paper Download PDFInfo
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- CN112442917A CN112442917A CN202011328386.0A CN202011328386A CN112442917A CN 112442917 A CN112442917 A CN 112442917A CN 202011328386 A CN202011328386 A CN 202011328386A CN 112442917 A CN112442917 A CN 112442917A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
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Abstract
The invention provides a preparation method of a surface sizing solution and watercolor drawing paper, and relates to the technical field of paper surface sizing. The surface sizing agent provided by the invention comprises a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing agent is 2-8%; the glue comprises the following components in parts by weight: 100 parts of gelatin; 0-10 parts of a crosslinking agent; 0-15 parts of a water repellent agent; the cross-linking agent and the water repellent agent are not 0 at the same time; the cross-linking agent comprises formaldehyde and/or glutaraldehyde; the water repellent agent comprises one or more of organic fluorine compounds, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size. The watercolor drawing paper prepared by the surface sizing solution provided by the invention can simultaneously improve the color reducibility, the scratch resistance, the water resistance and the water washing resistance of the paper, and meet the performance requirements of the watercolor drawing paper.
Description
Technical Field
The invention relates to the technical field of paper surface sizing, in particular to a preparation method of a surface sizing solution and watercolor drawing paper.
Background
Paper for painting is mainly classified into two categories: one is Chinese painting paper, and the other is Western painting paper. The Chinese painting paper includes Xuan paper, mulberry paper, paper for clamping river, etc., and the Western painting paper includes watercolor paper, oil painting paper, plate painting paper, etc. The watercolour drawing paper is a high-grade drawing paper specially used for drawing watercolour in the art. With the vigorous development of watercolor paintings in China, watercolor painting paper is widely applied. The watercolor paper is used as a bearing object of watercolor paintings, the paper characteristics of the watercolor paper play an important role in realizing various skills of watercolor paintings, and in order to meet the painting requirements of watercolor paintings, the watercolor paper needs to have the performances of water resistance, scratch resistance, color reducibility, water washing resistance and the like. The scratch resistance means that the paper surface should not have fuzzing phenomenon after the pencil is wiped by a rubber to form a picture; color reduction refers to the difference in color between the pigment when dry and when wet; the water washing resistance means that the pigment can be washed off by clear water to be used for redrawing after the pigment is required to be dried on the surface of the paper by the watercolor drawing paper.
The key performance of the watercolor drawing paper is mainly realized by a surface sizing process. Surface sizing is one of the most commonly used methods for improving paper performance in the paper industry, and can effectively improve the water resistance, dimensional stability, surface strength and other properties of paper. The surface sizing agents used commonly include starch, AKD, ASA, paraffin, styrene, PVA, CMC, gelatin, chitosan, wax emulsion, etc., and the effect of each surface sizing agent is different. For example, chinese patent CN107268316A describes a method for producing watercolor painting and calligraphy paper, which adopts starch for surface sizing, and can effectively improve the scratch resistance of watercolor painting paper, but has little improvement on other properties; chinese patent CN105970716A describes a method for making manual water color drawing paper, which uses gelatin, polypropylene glue or polyethylene glue for surface sizing, the gelatin surface sizing can effectively improve the scratch resistance and color reducibility of paper, but can affect the water resistance and water washing resistance of paper, and the polypropylene glue and polyethylene glue are difficult to directly perform surface sizing of paper.
In the prior art, each surface sizing agent has different action performance, and the currently disclosed method is difficult to simultaneously meet the requirements of all the performances of the watercolor drawing paper.
Disclosure of Invention
The invention aims to provide a preparation method of surface sizing solution and watercolor drawing paper.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a surface sizing agent, which comprises a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing agent is 2-8%;
the glue comprises the following components in parts by weight:
100 parts of gelatin;
0-10 parts of a crosslinking agent;
0-15 parts of a water repellent agent;
the cross-linking agent and the water repellent agent are not 0 at the same time;
the cross-linking agent comprises formaldehyde and/or glutaraldehyde;
the water repellent agent comprises one or more of organic fluorine compounds, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size.
Preferably, the gum comprises the following components in parts by weight:
100 parts of gelatin;
3-6 parts of a crosslinking agent;
6-9 parts of a water repellent agent.
Preferably, the water repellent agent is an organofluorine compound, a styrene-acrylic emulsion, an alkyl ketene dimer, a mixture of a styrene-acrylic emulsion and an alkyl ketene dimer, a mixture of a paraffin emulsion and a neutral rosin size, a paraffin emulsion or a neutral rosin size.
Preferably, the organic fluorine compound comprises one or more of a chromium complex of a perfluorocarboxylic acid, a fluorocarbon acrylate resin, and a fluorocarbon sulfonylaminoethyl acrylate.
The invention provides a preparation method of watercolor drawing paper, which comprises the following steps:
sequentially pulping, mixing pulp and manufacturing paper making materials to obtain base paper;
performing surface sizing on the base paper to obtain watercolor drawing paper; the surface sizing solution adopted by the surface sizing is the surface sizing solution in the technical scheme.
Preferably, the method of surface sizing is film transfer or impregnation.
Preferably, the using amount of the sizing liquid during surface sizing is 3-15%.
Preferably, the papermaking material comprises one or more of bleached softwood pulp, bleached bamboo pulp, bleached cotton pulp and bleached hemp pulp.
Preferably, the pulping concentration during pulping is 1.57%, and the pulping degree is 20-35 DEG SR.
Preferably, an auxiliary agent is added during slurry preparation; the adjuvants include wet strength agents, cationic starches, sizing agents and fillers.
The invention provides a surface sizing agent, which comprises a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing agent is 2-8%; the glue comprises the following components in parts by weight: 100 parts of gelatin; 0-10 parts of a crosslinking agent; 0-15 parts of a water repellent agent; the cross-linking agent and the water repellent agent are not 0 at the same time; the cross-linking agent comprises formaldehyde and/or glutaraldehyde; the water repellent agent comprises one or more of organic fluorine compounds, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size. In the invention, the gelatin mainly has the function of improving the color reducibility and the scratch resistance of the watercolor drawing paper, the cross-linking agent has the function of improving the water resistance of the gelatin, and the gelatin is soluble and is insoluble in water after being cross-linked into macromolecules by using the cross-linking agent, so that the phenomenon that the surface of the watercolor drawing paper is sticky when drawing water can be prevented, and the water resistance is further improved by using the water resistance agent. The watercolor drawing paper prepared by the surface sizing solution provided by the invention can simultaneously improve the color reducibility, the scratch resistance, the water resistance and the water washing resistance of the paper, and meet the performance requirements of the watercolor drawing paper.
Detailed Description
The invention provides a surface sizing agent, which comprises a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing agent is 2-8%;
the glue comprises the following components in parts by weight:
100 parts of gelatin;
0-10 parts of a crosslinking agent;
0-15 parts of a water repellent agent;
the cross-linking agent and the water repellent agent are not 0 at the same time;
the cross-linking agent comprises formaldehyde and/or glutaraldehyde;
the water repellent agent comprises one or more of organic fluorine compounds, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size.
In the present invention, all the raw material components are commercially available products well known to those skilled in the art unless otherwise specified.
The surface sizing agent provided by the invention comprises a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing agent is 2-8%, and preferably 3-6%.
In the invention, the glue comprises 100 parts of gelatin by weight.
Based on the weight parts of the gelatin, the gelatin agent comprises 0-10 parts of a cross-linking agent, preferably 3-6 parts, and particularly preferably 3 parts, 4 parts, 5 parts or 6 parts. In the present invention, the crosslinking agent comprises formaldehyde and/or glutaraldehyde, preferably formaldehyde or glutaraldehyde.
Based on the weight parts of the gelatin, the gelatin agent comprises 0-15 parts of a water repellent agent, preferably 6-9 parts, and particularly preferably 6 parts, 7 parts, 8 parts or 9 parts. In the present invention, the weight parts of the water-repellent agent are based on the effective content in the water-repellent agent. In the invention, the water repellent agent comprises one or more of organic fluorine compound, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size, and preferably the organic fluorine compound, the styrene-acrylic emulsion, the alkyl ketene dimer, the mixture of the styrene-acrylic emulsion and the alkyl ketene dimer, the mixture of the paraffin emulsion and the neutral rosin size, the paraffin emulsion or the neutral rosin size.
In a specific embodiment of the invention, based on the weight parts of the gelatin, when the water-repellent agent is an organic fluorine compound, the glue comprises 6-7 parts of the water-repellent agent; when the water-resistant agent is styrene-acrylic emulsion, the glue comprises 8 parts of the water-resistant agent; when the water repellent agent is a mixture of styrene-acrylic emulsion and alkyl ketene dimer, the gum comprises 9 parts of the water repellent agent, wherein the mass ratio of the styrene-acrylic emulsion to the alkyl ketene dimer is 4: 5; when the water repellent agent is a mixture of paraffin emulsion and neutral rosin size, the glue comprises 8 parts of the water repellent agent, wherein the mass ratio of the paraffin emulsion to the neutral rosin size is 3: 5; when the water-resistant agent is paraffin emulsion, the glue comprises 8 parts of the water-resistant agent.
In the present invention, the organic fluorine compound preferably includes one or more of a chromium complex of perfluorocarboxylic acid, a fluorocarbon acrylate-based resin, and a fluorocarbon sulfonylaminoethyl acrylate, and more preferably a fluorocarbon acrylate-based resin.
In the invention, the effective content of the styrene-acrylic emulsion is preferably 50%; the effective content of the paraffin wax emulsion is preferably 40%, and the effective content of the organic fluorine compound is preferably 20%; the effective content of the alkyl ketene dimer is preferably 18%; the effective content of the neutral rosin size is preferably 35%. In the present invention, the crosslinking agent and the water repellent agent are not 0 at the same time.
The preparation method of the surface sizing solution has no special requirements, and the conventional preparation method in the field is adopted.
The invention also provides a preparation method of the watercolor drawing paper, which comprises the following steps:
sequentially pulping, mixing pulp and manufacturing paper making materials to obtain base paper;
performing surface sizing on the base paper to obtain watercolor drawing paper; the surface sizing solution adopted by the surface sizing is the surface sizing solution in the technical scheme.
The paper making material is sequentially pulped, mixed and manufactured to obtain the base paper. In the present invention, the papermaking material preferably comprises one or more of bleached softwood pulp, bleached bamboo pulp, bleached cotton pulp and bleached hemp pulp. In the present invention, when the papermaking material is a mixture of a plurality of materials, the present invention does not require the proportions of the components in the mixture to be any specific, and may be those known to those skilled in the art. In a specific embodiment of the present invention, when the papermaking material is a mixture of bleached cotton pulp and bleached bamboo pulp, the mass ratio of the bleached cotton pulp to the bleached bamboo pulp is 1: 1; when the papermaking material is a mixture of bleached cotton pulp and bleached jute pulp, the mass ratio of the bleached cotton pulp to the bleached jute pulp is 1: 1.
In the invention, the beating concentration during beating is preferably 1.57%, and the beating degree is preferably 20-35 DEG SR, more preferably 30-35 DEG SR.
In the invention, an auxiliary agent is preferably added during the slurry preparation; the adjuvants preferably include wet strength agents, cationic starches, sizing agents and fillers. In the invention, the addition amount of the effective component of the wet strength agent relative to the oven dry pulp is preferably 1 wt%; the reinforcing agent is preferably polyamide epichlorohydrin resin (PAE), and the effective content of the PAE is preferably 11%; the addition amount of the Cationic Starch (CS) to the oven dried pulp is preferably 1 wt%; the addition amount of the effective component of the sizing agent relative to the oven-dried pulp is preferably 0.1-0.5 wt%, more preferably 0.2-0.4 wt%, and particularly preferably 0.2 wt%, 0.3 wt% or 0.4 wt%; the sizing agent is preferably Alkyl Ketene Dimer (AKD), and the effective content of the AKD is preferably 18%; the addition amount of the filler relative to the oven-dried pulp is preferably 8-15 wt%, and more preferably 8 wt%, 10 wt% or 15 wt%; the filler is preferably light calcium carbonate (PCC) or diatomaceous earth. The invention has no special requirements on the concrete process of the slurry preparation, and the slurry preparation process known by the technicians in the field can be adopted.
In the present invention, the method for producing paper preferably includes: and (3) dehydrating and forming the prepared pulp by a fourdrinier or cylinder paper machine, squeezing wet paper, and drying to obtain the base paper. The invention has no special requirements on the specific process parameters of each step, and the process parameters known by the technical personnel in the field can be adopted.
After the base paper is obtained, the base paper is subjected to surface sizing to obtain the watercolor drawing paper. In the invention, the surface sizing solution adopted by the surface sizing is the surface sizing solution in the technical scheme. In the present invention, the method of surface sizing is preferably film transfer or impregnation. The present invention does not require a specific process for the film transfer or impregnation, and may employ processes well known to those skilled in the art.
In the invention, the dosage of the sizing liquid during surface sizing is preferably 3-15%, and more preferably 7-12%. In the invention, the amount of the sizing agent is calculated by the weight of the base paper, and specifically, the amount of the sizing agent on the surface of each base paper is preferably 3-15%.
According to the invention, after surface sizing, the paper after sizing is dried to obtain the watercolor drawing paper. In the invention, the drying is preferably carried out in a drying cylinder, and the drying temperature is preferably 95-110 ℃, and more preferably 100-105 ℃.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
(1) Pulping: adding 100% bleached cotton pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 35 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of cationic starch CS, 0.4% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 15% of a filler PCC, and the addition amounts are relative to the amount of oven dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a film transfer mode; the glue applying liquid consists of a glue agent and water, wherein the glue agent comprises 100 parts of gelatin, 6 parts of formaldehyde and 6 parts of acrylic fluorocarbon resin by mass, and the mass content of the glue agent in the glue applying liquid is 3%; the using amount of the sizing liquid is 3 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
The watercolor drawing paper produced in the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 20-25 g/m2Scratch resistance 18 times, water-washability a, color reducibility c (ultramarine) 43, c (deep cadmium red) 50, c (lemon yellow) 55.
The water washing resistance detection method comprises the following steps: the pen point is stained with diluted ultramarine pigment special for watercolor, a straight line with the length of 10cm is drawn on the paper surface, and the ultramarine pigment is repeatedly coated until the line is dry; the pen point is fully stained with clear water, a part of the ultramarine line is repeatedly smeared, and the color is washed off until the color is cleaned or the paper surface is damaged; then, the evaluation of the water washing resistance was carried out according to the following criteria: a, after washing, the paper surface recovers the original color; pigment particles still remain on the paper surface after the paper surface is washed by water; c, still having ultramarine blue lines on the paper surface after washing with water.
The detection method of color reducibility comprises the following steps: preparing three watercolor pigment suspensions of ultramarine, deep cadmium red and lemon yellow respectively; drawing a square area with the area of 5cm multiplied by 5cm on a paper surface by a pencil, sucking 0.2mL of the prepared watercolor painting pigment by using a syringe, and uniformly coating the pigment on the area by using a watercolor painting brush; after the paper surface is completely dried, the colorimetric values L, a and b are measured, and then the chroma value c of each color of each paper sample is calculated (a ═2+b2)1/2, the quality of the color reproducibility of the paper is evaluated.
Example 2
(1) Pulping: adding 50% of bleached cotton pulp and 50% of bleached bamboo pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 30 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.4% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 10% of filler diatomite, and the addition amounts are relative to the amount of oven dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying liquid consists of glue and water, wherein the glue applying liquid contains 6% of glue by mass, and the glue consists of 100 parts of gelatin, 4 parts of glutaraldehyde and 7 parts of acrylic fluorocarbon resin by mass; the amount of the sizing solution is 4 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of the embodiment 1, the watercolor paper produced by the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 20-25 g/m2Scratch resistance 20 times, water scrub resistance a, color reducibility c (ultramarine) 45, c (deep cadmium red) 52, c (lemon yellow) 56.
Example 3
(1) Pulping: adding 100% bleached cotton pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 35 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.4% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 15% of a filler PCC (Poly-carbonate), and the addition amounts are relative to the amount of oven-dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying liquid consists of 5% of glue and water, wherein the glue consists of 100 parts of gelatin, 6 parts of formaldehyde and 8 parts of styrene-acrylic emulsion (the effective content of the styrene-acrylic emulsion is 50%) in parts by mass; the amount of the sizing solution is 4 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of the embodiment 1, the watercolor paper produced by the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 20-25 g/m2Scratch resistance 18 times, water-washability a, color reducibility c (ultramarine) 43, c (deep cadmium red) 50, c (lemon yellow) 55.
Example 4
(1) Pulping: adding 50% of bleached cotton pulp and 50% of bleached jute pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 30 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.3% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 10% of filler diatomite, and the addition amounts are relative to the amount of oven dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying liquid consists of 6% of glue and water, wherein the glue consists of 100 parts of gelatin, 3 parts of formaldehyde, 4 parts of styrene-acrylic emulsion (the effective content of the styrene-acrylic emulsion is 50% based on the effective content of the styrene-acrylic emulsion), and 5 parts of AKD (the effective content of the AKD is 18% based on the effective content of alkyl ketene dimer); the amount of the sizing solution is 7 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of the embodiment 1, the watercolor paper produced by the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 18-23 g/m2Rub resistance greater than 20 times, water scrub resistance A, color reducibility c (ultramarine) 46, c (deep cadmium red) 54, c (lemon yellow) 60.
Example 5
(1) Pulping: adding 50% of bleached cotton pulp and 50% of bleached jute pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 30 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.2% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 8% of a filler PCC (Poly-propylene-carbonate), and the addition amounts of the PAE, the CS and the filler are relative to the amount of oven-dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying solution comprises 6% of glue and 9% of water, wherein the glue comprises 100% of gelatin, 3% of glutaraldehyde and 3% of paraffin emulsion (the effective content of the paraffin emulsion is 40%, and the effective content of neutral rosin is 5% (the effective content of the neutral rosin is 35%);
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of the embodiment 1, the watercolor paper produced by the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 18-23 g/m2Scratch resistance greater than 20 times, water-wash resistance A, color reducibility c (ultramarine) 47, c (deep cadmium red) 56, c (lemon yellow) 60.
Example 6
(1) Pulping: adding 50% of bleached cotton pulp and 50% of bleached jute pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 30 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.3% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 8% of a filler PCC (Poly-propylene-carbonate), and the addition amounts of the PAE, the CS and the filler are relative to the amount of oven-dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying liquid consists of 4% of glue and water, wherein the glue consists of 100 parts of gelatin, 5 parts of formaldehyde and 8 parts of paraffin emulsion (the effective content of the paraffin emulsion is 40%) in parts by mass; the amount of the sizing solution is 6 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of the embodiment 1, the watercolor paper produced by the embodiment has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 20-25 g/m2Scratch resistance 19 times, water scrub resistance a, color reducibility c (ultramarine) 43, c (deep cadmium red) 52, c (lemon yellow) 58.
Comparative example
(1) Pulping: adding 100% bleached cotton pulp into a tile power pulping machine for pulping, wherein the pulping concentration is 1.57%, and the pulping degree is 35 DEG SR;
(2) slurry preparation: sequentially adding 1% of a wet strength agent PAE (the effective content of the PAE is 11% based on the effective components of the wet strength agent), 1% of CS (calcium phosphate), 0.4% of a sizing agent AKD (the effective content of the AKD is 18% based on the effective components of the sizing agent), 15% of a filler PCC (Poly-carbonate), and the addition amounts are relative to the amount of oven-dry pulp;
(3) manufacturing paper: dehydrating and molding the prepared pulp by a cylinder paper machine, squeezing wet paper, and then drying to obtain base paper;
(4) surface sizing: carrying out surface sizing on the base paper in a dipping mode; the glue applying liquid is gelatin and water, and the mass content of the gelatin is 4%; the amount of the sizing solution is 4 percent;
(5) and (3) drying: and drying the paper after glue application through a drying cylinder at the drying temperature of 105 ℃ to obtain the watercolor drawing paper.
By adopting the detection method of example 1, the watercolor paper produced by the comparative example has the following technical indexes: quantitative determination of 300 + -5 g/m2Cobb water absorption of 30-40 g/m2Scratch resistance 18 times, water scrub resistance C, color reducibility C (ultramarine) 43, C (deep cadmium red) 51, C (lemon yellow) 52. The gelatin is directly used for surface sizing, water-resistant modification is not carried out, and the water resistance and the water washing resistance of paper are poor.
It can be seen from the above examples and comparative examples that the surface sizing solution provided by the invention can simultaneously improve the water resistance, the scratch resistance, the color reducibility and the water washing resistance of the watercolor drawing paper, and produce the watercolor drawing paper with excellent performances.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The surface sizing solution is characterized by comprising a sizing agent and water, wherein the mass content of the sizing agent in the surface sizing solution is 2-8%;
the glue comprises the following components in parts by weight:
100 parts of gelatin;
0-10 parts of a crosslinking agent;
0-15 parts of a water repellent agent;
the cross-linking agent and the water repellent agent are not 0 at the same time;
the cross-linking agent comprises formaldehyde and/or glutaraldehyde;
the water repellent agent comprises one or more of organic fluorine compounds, styrene-acrylic emulsion, alkyl ketene dimer, paraffin emulsion and neutral rosin size.
2. The surface sizing solution according to claim 1, characterized in that the sizing comprises the following components in parts by weight:
100 parts of gelatin;
3-6 parts of a crosslinking agent;
6-9 parts of a water repellent agent.
3. The surface sizing according to claim 1 or 2, characterized in that the water repellent is an organofluorine compound, a styrene-acrylic emulsion, an alkyl ketene dimer, a mixture of a styrene-acrylic emulsion and an alkyl ketene dimer, a mixture of a paraffin emulsion and a neutral rosin size, a paraffin emulsion or a neutral rosin size.
4. The surface sizing solution according to claim 3, wherein the organofluorine compound comprises one or more of a chromium complex of a perfluorocarboxylic acid, a fluorocarbon acrylate resin, and a fluorocarbon sulfonylaminoethyl acrylate.
5. The preparation method of the watercolor drawing paper is characterized by comprising the following steps:
sequentially pulping, mixing pulp and manufacturing paper making materials to obtain base paper;
performing surface sizing on the base paper to obtain watercolor drawing paper; the surface sizing solution used for surface sizing is the surface sizing solution as described in any one of claims 1 to 4.
6. The method of claim 5, wherein the surface sizing is by film transfer or impregnation.
7. The preparation method according to claim 5 or 6, characterized in that the amount of the sizing liquid used in the surface sizing is 3-15%.
8. The method of claim 5, wherein the papermaking material comprises one or more of bleached softwood pulp, bleached bamboo pulp, bleached cotton pulp, and bleached hemp pulp.
9. The method of claim 5, wherein the step of preparing the composition is carried out in a batch processThe pulping concentration is 1.57% during pulping, and the pulping degree is 20-35°SR。
10. The preparation method according to claim 5, characterized in that an auxiliary agent is added during the slurry preparation; the adjuvants include wet strength agents, cationic starches, sizing agents and fillers.
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| CN113119528A (en) * | 2021-04-19 | 2021-07-16 | 福建农林大学 | Method for manufacturing waterproof straw |
| CN113136743A (en) * | 2021-04-20 | 2021-07-20 | 黄山学院 | Fireproof paper for art painting |
| CN114369971A (en) * | 2022-01-26 | 2022-04-19 | 中国制浆造纸研究院有限公司 | Paint for printing watercolor drawing paper, printing watercolor drawing paper and preparation method thereof |
| CN115467189A (en) * | 2022-09-16 | 2022-12-13 | 万邦特种材料股份有限公司 | Method for manufacturing yellow high-transparency formed paper |
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