CN117587658A - Environment-friendly decorative base paper and preparation method thereof - Google Patents
Environment-friendly decorative base paper and preparation method thereof Download PDFInfo
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- CN117587658A CN117587658A CN202311707163.9A CN202311707163A CN117587658A CN 117587658 A CN117587658 A CN 117587658A CN 202311707163 A CN202311707163 A CN 202311707163A CN 117587658 A CN117587658 A CN 117587658A
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- microfibrillated cellulose
- base paper
- decorative base
- wood pulp
- titanium dioxide
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- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 93
- 229920002678 cellulose Polymers 0.000 claims abstract description 77
- 239000001913 cellulose Substances 0.000 claims abstract description 77
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 46
- 239000000725 suspension Substances 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 229920001046 Nanocellulose Polymers 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 239000006185 dispersion Substances 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000004537 pulping Methods 0.000 claims abstract description 19
- 239000004952 Polyamide Substances 0.000 claims abstract description 17
- 239000012153 distilled water Substances 0.000 claims abstract description 17
- YBRQEOLOGGLDGM-UHFFFAOYSA-M dodecyl-bis(2-hydroxyethyl)-methylazanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(CCO)CCO YBRQEOLOGGLDGM-UHFFFAOYSA-M 0.000 claims abstract description 17
- 229920002647 polyamide Polymers 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000002791 soaking Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011268 mixed slurry Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 239000011121 hardwood Substances 0.000 claims description 16
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 13
- 229920000805 Polyaspartic acid Polymers 0.000 claims description 13
- 108010064470 polyaspartate Proteins 0.000 claims description 13
- 229920000877 Melamine resin Polymers 0.000 claims description 10
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 10
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 10
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 10
- 238000013329 compounding Methods 0.000 claims description 9
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 8
- 239000004202 carbamide Substances 0.000 claims description 8
- 239000011122 softwood Substances 0.000 claims description 8
- 230000002195 synergetic effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000010009 beating Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 51
- 235000010215 titanium dioxide Nutrition 0.000 description 40
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001038 titanium pigment Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/20—Chemically or biochemically modified fibres
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/04—Hydrocarbons
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/09—Sulfur-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/51—Triazines, e.g. melamine
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses an environment-friendly decorative base paper and a preparation method thereof, comprising the following steps: preparing a pretreated microfibrillated cellulose dispersion; adding the pretreated microfibrillated cellulose dispersion liquid into the titanium dioxide suspension liquid, stirring, and separating to obtain a nano cellulose composite material; adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking; the soaked materials are subjected to series connection free pulping by adopting a fluffer and a pulping machine to obtain mixed pulp; adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by paper making, squeezing and drying to obtain the decorative base paper. The modified microfibrillated cellulose is compounded with the titanium dioxide suspension, so that the prepared decorative base paper is more uniform and stable, has high tightness, excellent longitudinal tensile strength and high tear strength, and is excellent in performance.
Description
Technical Field
The invention belongs to the technical field of decorative raw paper manufacture, and particularly relates to environment-friendly decorative raw paper and a preparation method thereof.
Background
The decorative base paper is an industrial special paper made up by using high-quality wood pulp and titanium white powder as main raw materials through a special process, and after printing and resin impregnation, it is mainly used as face-protecting layer paper, face-layer paper and bottom-layer paper of artificial board of fibre board and shaving board. Therefore, the impregnated decorative base paper is called melamine paper in the artificial board industry. The decorative material made of the melamine paper veneered artificial board has the excellent characteristics of heat insulation, flame retardance, no warping, no cracking, easy cleaning and the like, has various patterns, rich and beautiful colors, bright and beautiful colors and prominent layering sense, is widely used for middle and high-grade building decoration in hotels, markets, office buildings, various entertainment cultural places and the like, home decoration, furniture and manufacturing of reinforced wood floors and internal decoration of transportation tools, and is a fashion environment-friendly material using paper instead of plastic and paper instead of wood. The decorative base paper can be classified into plain decorative base paper, printable binding base paper, surface wear-resistant base paper, balance base paper and edge banding decorative base paper according to application characteristics and purposes.
Titanium pigment filler is added in the preparation of decorative base paper, so that the paper manufactured by the method has good whiteness and glossiness, is thin and smooth, has good printability, does not penetrate, and has light weight. The content and distribution of the titanium dioxide in the paper determine the opacity of the decorative base paper, and the higher the content is, the more uniformly distributed the more favorable the decorative base paper to obtain higher opacity. However, the existing filling method has the disadvantages that titanium dioxide cannot be well dispersed in slurry, and is easy to aggregate to influence the opacity of finished paper, and the opacity of paper is reduced due to uneven pigment distribution, so that the existing filling method needs to be compensated by increasing the pigment consumption. However, titanium dioxide has low retention and large loss in the papermaking process, and the too high pigment filling amount can adversely affect the strength of finished paper and the like.
One of the many uses or applications of cellulose nanomaterials is the use of nanocellulose to increase or improve the strength and quality of various paper products. In the manufacturing process, the nanocellulose can be introduced and compounded with titanium dioxide to prepare a composite material, and then the composite material is added into the process of preparing decorative base paper, so that the distribution condition of the titanium dioxide in paper pulp is improved, and the performance of the decorative base paper is improved.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method for preparing environment-friendly decorative base paper, comprising the steps of:
step one, adding microfibrillated cellulose into water, then adding sodium dodecyl benzene sulfonate, and stirring to obtain pretreated microfibrillated cellulose dispersion liquid; adding the pretreated microfibrillated cellulose dispersion liquid into the titanium dioxide suspension liquid, stirring, and separating to obtain a nano cellulose composite material;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking;
step three, adopting a fluffer and a pulping machine to carry out series connection free pulping on the soaked material in the step two to obtain mixed pulp;
and fourthly, adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, manufacturing, forming, squeezing and drying to obtain the decorative base paper.
Preferably, in the first step, the microfibrillated cellulose is modified, and the process is as follows: taking microfibrillated cellulose, deionized water, polyaspartic acid and glutaraldehyde, applying ultrasonic reaction at high temperature, drying, and pulverizing to obtain modified microfibrillated cellulose.
Preferably, the mass ratio of the microfibrillated cellulose to the deionized water is 1:30-45; the mass ratio of the microfibrillated cellulose to the polyaspartic acid is 1:15-25; the mass ratio of the microfibrillated cellulose to glutaraldehyde is 1:0.1-1.5; the temperature of the ultrasonic reaction applied at the high temperature is 65-80 ℃ and the reaction time is 1.5-2.5 hours; the ultrasonic power is 800-1000W, and the ultrasonic frequency is 35-45 KHz; the drying temperature is 60-80 ℃.
Preferably, in the first step, the microfibrillated cellulose is modified, and the process is as follows: and (3) adding microfibrillated cellulose, deionized water, polyaspartic acid and glutaraldehyde into a microwave and ultrasonic integrated reactor, simultaneously starting microwaves and ultrasonic waves, carrying out synergistic treatment reaction for 45-60 min at the temperature of 65-80 ℃, drying, and crushing to obtain the modified microfibrillated cellulose.
Preferably, the mass ratio of the microfibrillated cellulose to the deionized water is 1:30-45; the mass ratio of the microfibrillated cellulose to the polyaspartic acid is 1:15-25; the mass ratio of the microfibrillated cellulose to glutaraldehyde is 1:0.1-1.5; the microwave power of the synergistic treatment reaction is 500-800W, the ultrasonic power is 800-1000W, and the ultrasonic frequency is 35-45 KHz; the drying temperature is 60-80 ℃.
Preferably, in the first step, the mass ratio of the microfibrillated cellulose to the water is 1:20-30; the mass ratio of the microfibrillated cellulose to the sodium dodecyl benzene sulfonate is 100-300:1; the stirring time is 30-60 min, and the stirring speed is 500-1000 r/min.
Preferably, in the first step, the mass ratio of the pretreated microfibrillated cellulose dispersion liquid to the titanium dioxide suspension liquid is 1:0.2-0.6; the preparation method of the titanium dioxide suspension comprises the following steps: according to the weight portions, 1 to 5 portions of titanium dioxide, 3 to 5 portions of melamine, 10 to 15 portions of urea and 80 to 100 portions of deionized water are taken to be mixed and stirred to obtain titanium dioxide suspension; the stirring speed is 500-1000 r/min.
Preferably, in the second step, the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the content of the hardwood pulp board in the mixed wood pulp board is 60-70 wt%; the addition amount of the mixed wood pulp plate is 10-15 wt% of distilled water, and the addition amount of the nano cellulose composite material is 15-25 wt% of the mixed wood pulp plate; the soaking temperature is 25-30 ℃ and the soaking time is 12-36 hours.
Preferably, in the third step, pulping is carried out to 35-45 DEG SR; in the fourth step, the adding amount of the dodecyl bis hydroxyethyl methyl ammonium chloride is 0.8-1.5 wt% of the mixed wood pulp sheet, and 1-2 wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
The invention also provides the environment-friendly decorative base paper prepared according to the preparation method.
The invention at least comprises the following beneficial effects: according to the invention, the microfibrillated cellulose is modified by the polyaspartic acid and glutaraldehyde, and the surface morphology and the functional groups of the microfibrillated cellulose after modification are changed, so that the composition of the microfibrillated cellulose and the titanium pigment suspension is more uniform and stable, the prepared decorative base paper has more excellent performance, and the decorative base paper prepared by the nano cellulose composite material has high tightness, excellent longitudinal tensile strength and high tear strength performance, and is the decorative base paper with excellent performance.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
The specific embodiment is as follows:
the following is a further detailed description of the invention to enable one skilled in the art to make and use the invention in connection with the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1:
the preparation method of the environment-friendly decorative base paper comprises the following steps:
step one, adding 1kg of microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated microfibrillated cellulose dispersion; adding 1kg of pretreated microfibrillated cellulose dispersion liquid into 0.5kg of titanium dioxide suspension liquid, stirring at the speed of 1000r/min for 90min, and separating to obtain a nano cellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Example 2:
the preparation method of the environment-friendly decorative base paper comprises the following steps:
firstly, taking 1kg of microfibrillated cellulose, 30kg of deionized water, 15kg of polyaspartic acid and 0.5kg of glutaraldehyde, applying ultrasonic reaction at 70 ℃ for 2 hours, drying at 80 ℃, and crushing to obtain modified microfibrillated cellulose; the ultrasonic power is 800W, and the ultrasonic frequency is 35KHz;
adding 1kg of modified microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated modified microfibrillated cellulose dispersion; adding 1kg of pretreated modified microfibrillated cellulose dispersion liquid into 0.5kg of titanium dioxide suspension liquid, stirring at the speed of 1000r/min for 90min, and separating to obtain a nanocellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Example 3:
the preparation method of the environment-friendly decorative base paper comprises the following steps:
firstly, 1kg of microfibrillated cellulose, 30kg of deionized water, 15kg of polyaspartic acid and 0.5kg of glutaraldehyde are taken and added into a microwave and ultrasonic integrated reactor, microwaves and ultrasonic waves are started at the same time, a synergistic treatment reaction is carried out for 60min at the temperature of 70 ℃, drying is carried out at the temperature of 80 ℃, and the modified microfibrillated cellulose is obtained by crushing; the microwave power of the synergistic treatment reaction is 800W, the ultrasonic power is 800W, and the ultrasonic frequency is 35KHz;
adding 1kg of modified microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated modified microfibrillated cellulose dispersion; adding 1kg of pretreated modified microfibrillated cellulose dispersion liquid into 0.5kg of titanium dioxide suspension liquid, stirring at the speed of 1000r/min for 90min, and separating to obtain a nanocellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Example 4:
in the process of preparing the nanocellulose composite material, the inventor finds that the effect of compounding the pretreated microfibrillated cellulose dispersion liquid and the titanium dioxide suspension liquid is not ideal only by stirring, and the titanium dioxide suspension liquid cannot be uniformly distributed in the pretreated microfibrillated cellulose dispersion liquid, therefore, the inventor adds the pretreated microfibrillated cellulose dispersion liquid and the titanium dioxide suspension liquid into a high-pressure reactor and introduces high-pressure CO 2 By forming supercritical CO 2 The carbon dioxide enables the titanium dioxide suspension to be uniformly distributed in the pretreated microfibrillated cellulose dispersion liquid, and in the process of gradually releasing pressure, the combination of the titanium dioxide suspension and the pretreated microfibrillated cellulose dispersion liquid is more stable, so that the performance of the prepared nano cellulose composite material is more excellent;
the preparation method of the environment-friendly decorative base paper comprises the following steps:
step one, adding 1kg of microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated modified microfibrillated cellulose dispersion; adding 0.5kg of titanium dioxide suspension into 1kg of pretreated modified microfibrillated cellulose dispersion liquid, adding the pretreated modified microfibrillated cellulose dispersion liquid into a high-pressure reactor, injecting high-pressure carbon dioxide into the reactor, stirring for 90min at the temperature of 45 ℃ and the pressure of 25MPa and the stirring speed of 1000r/min, then decompressing at the speed of 1MPa/min, and separating to obtain a nano cellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Example 5:
the preparation method of the environment-friendly decorative base paper comprises the following steps:
firstly, taking 1kg of microfibrillated cellulose, 30kg of deionized water, 15kg of polyaspartic acid and 0.5kg of glutaraldehyde, applying ultrasonic reaction at 70 ℃ for 2 hours, drying at 80 ℃, and crushing to obtain modified microfibrillated cellulose; the ultrasonic power is 800W, and the ultrasonic frequency is 35KHz;
adding 1kg of modified microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated microfibrillated cellulose dispersion; adding 0.5kg of titanium dioxide suspension into 1kg of pretreated microfibrillated cellulose dispersion liquid, adding the pretreated microfibrillated cellulose dispersion liquid into a high-pressure reactor, injecting high-pressure carbon dioxide into the reactor, stirring for 90min at the temperature of 45 ℃ and the pressure of 25MPa and the stirring speed of 1000r/min, then decompressing at the speed of 1MPa/min, and separating to obtain a nano cellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Example 6:
the preparation method of the environment-friendly decorative base paper comprises the following steps:
firstly, 1kg of microfibrillated cellulose, 30kg of deionized water, 15kg of polyaspartic acid and 0.5kg of glutaraldehyde are taken and added into a microwave and ultrasonic integrated reactor, microwaves and ultrasonic waves are started at the same time, a synergistic treatment reaction is carried out for 60min at the temperature of 70 ℃, drying is carried out at the temperature of 80 ℃, and the modified microfibrillated cellulose is obtained by crushing; the microwave power of the synergistic treatment reaction is 800W, the ultrasonic power is 800W, and the ultrasonic frequency is 35KHz;
adding 1kg of modified microfibrillated cellulose into 20kg of water, then adding 0.01kg of sodium dodecyl benzene sulfonate, and stirring at a speed of 500r/min for 30min to obtain a pretreated modified microfibrillated cellulose dispersion; adding 0.5kg of titanium dioxide suspension into 1kg of pretreated microfibrillated cellulose dispersion liquid, adding the pretreated microfibrillated cellulose dispersion liquid into a high-pressure reactor, injecting high-pressure carbon dioxide into the reactor, stirring for 90min at the temperature of 45 ℃ and the pressure of 25MPa and the stirring speed of 1000r/min, then decompressing at the speed of 1MPa/min, and separating to obtain a nano cellulose composite material; the preparation method of the titanium dioxide suspension comprises the following steps: mixing 2kg of titanium dioxide, 3kg of melamine, 10kg of urea and 100kg of deionized water, and stirring to obtain a titanium dioxide suspension;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking for 24 hours at 28 ℃; the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the hardwood pulp board content in the mixed wood pulp board was 60wt%; the addition amount of the mixed wood pulp plate is 10wt% of distilled water, and the addition amount of the nano cellulose composite material is 20wt% of the mixed wood pulp plate;
step three, the soaked material in the step two is subjected to free pulping by adopting a fluffer and a pulping machine in series connection, and the pulp is pulped to 40 DEG SR, so that mixed pulp is obtained;
adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, forming by papermaking, squeezing, and drying to obtain decorative base paper; the amount of dodecyl bis hydroxyethyl methyl ammonium chloride added was 1wt% of the mixed wood pulp sheet and 1.5wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
The properties of the decorative base papers prepared in examples 6 were tested: wherein the paper making amount of the decorative base paper is 70g/m 2 ；
Wherein, the tightness: testing with reference to the method of GB/T451.3-2002; the longitudinal tensile strength is measured according to GB/T12914-2008 'determination of tensile Strength of paper and cardboard'; tear strength: testing by referring to the method of GB/T455-2002; the results are shown in Table 1;
TABLE 1
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, but rather is well suited to various fields of use, and further modifications may be readily apparent to those skilled in the art without departing from the general concepts defined by the claims and their equivalents, and therefore the invention is not limited to the specific details and illustrations and descriptions herein.
Claims (10)
1. The preparation method of the environment-friendly decorative base paper is characterized by comprising the following steps of:
step one, adding microfibrillated cellulose into water, then adding sodium dodecyl benzene sulfonate, and stirring to obtain pretreated microfibrillated cellulose dispersion liquid; adding the pretreated microfibrillated cellulose dispersion liquid into the titanium dioxide suspension liquid, stirring, and separating to obtain a nano cellulose composite material;
step two, adding the mixed wood pulp plate and the nano cellulose composite material into distilled water, and soaking;
step three, adopting a fluffer and a pulping machine to carry out series connection free pulping on the soaked material in the step two to obtain mixed pulp;
and fourthly, adding dodecyl bis (hydroxyethyl) methyl ammonium chloride and polyamide epoxy chloropropane into the mixed slurry, uniformly mixing, manufacturing, forming, squeezing and drying to obtain the decorative base paper.
2. The method for preparing environment-friendly decorative base paper according to claim 1, wherein in the first step, the microfibrillated cellulose is modified, and the process comprises the following steps: taking microfibrillated cellulose, deionized water, polyaspartic acid and glutaraldehyde, applying ultrasonic reaction at high temperature, drying, and pulverizing to obtain modified microfibrillated cellulose.
3. The method for preparing environment-friendly decorative base paper according to claim 2, wherein the mass ratio of the microfibrillated cellulose to deionized water is 1:30-45; the mass ratio of the microfibrillated cellulose to the polyaspartic acid is 1:15-25; the mass ratio of the microfibrillated cellulose to glutaraldehyde is 1:0.1-1.5; the temperature of the ultrasonic reaction applied at the high temperature is 65-80 ℃ and the reaction time is 1.5-2.5 hours; the ultrasonic power is 800-1000W, and the ultrasonic frequency is 35-45 KHz; the drying temperature is 60-80 ℃.
4. The method for preparing environment-friendly decorative base paper according to claim 1, wherein in the first step, the microfibrillated cellulose is modified, and the process comprises the following steps: and (3) adding microfibrillated cellulose, deionized water, polyaspartic acid and glutaraldehyde into a microwave and ultrasonic integrated reactor, simultaneously starting microwaves and ultrasonic waves, carrying out synergistic treatment reaction for 45-60 min at the temperature of 65-80 ℃, drying, and crushing to obtain the modified microfibrillated cellulose.
5. The method for preparing environment-friendly decorative base paper according to claim 4, wherein the mass ratio of the microfibrillated cellulose to deionized water is 1:30-45; the mass ratio of the microfibrillated cellulose to the polyaspartic acid is 1:15-25; the mass ratio of the microfibrillated cellulose to glutaraldehyde is 1:0.1-1.5; the microwave power of the synergistic treatment reaction is 500-800W, the ultrasonic power is 800-1000W, and the ultrasonic frequency is 35-45 KHz; the drying temperature is 60-80 ℃.
6. The method for producing an environment-friendly decorative base paper according to claim 1, wherein in the first step, the mass ratio of microfibrillated cellulose to water is 1:20-30; the mass ratio of the microfibrillated cellulose to the sodium dodecyl benzene sulfonate is 100-300:1; the stirring time is 30-60 min, and the stirring speed is 500-1000 r/min.
7. The method for preparing environment-friendly decorative base paper according to claim 1, wherein in the first step, the mass ratio of the pretreated microfibrillated cellulose dispersion liquid to the titanium dioxide suspension liquid is 1:0.2-0.6; the preparation method of the titanium dioxide suspension comprises the following steps: according to the weight portions, 1 to 5 portions of titanium dioxide, 3 to 5 portions of melamine, 10 to 15 portions of urea and 80 to 100 portions of deionized water are taken to be mixed and stirred to obtain titanium dioxide suspension; the stirring speed is 500-1000 r/min.
8. The method for preparing environment-friendly decorative base paper according to claim 1, wherein in the second step, the mixed wood pulp board is obtained by compounding a softwood pulp board and a hardwood pulp board; the content of the hardwood pulp board in the mixed wood pulp board is 60-70 wt%; the addition amount of the mixed wood pulp plate is 10-15 wt% of distilled water, and the addition amount of the nano cellulose composite material is 15-25 wt% of the mixed wood pulp plate; the soaking temperature is 25-30 ℃ and the soaking time is 12-36 hours.
9. The method for producing an environment-friendly decorative base paper according to claim 1, wherein in the third step, beating is carried out to 35-45 ° SR; in the fourth step, the adding amount of the dodecyl bis hydroxyethyl methyl ammonium chloride is 0.8-1.5 wt% of the mixed wood pulp sheet, and 1-2 wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
10. An environmental-friendly decorative base paper prepared according to the preparation method of any one of claims 1 to 9.
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