CN113957741A - Titanium composite material and application thereof in preparation of base paper - Google Patents

Titanium composite material and application thereof in preparation of base paper Download PDF

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Publication number
CN113957741A
CN113957741A CN202111313738.XA CN202111313738A CN113957741A CN 113957741 A CN113957741 A CN 113957741A CN 202111313738 A CN202111313738 A CN 202111313738A CN 113957741 A CN113957741 A CN 113957741A
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China
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base paper
composite material
titanium composite
titanium dioxide
titanium
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CN202111313738.XA
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CN113957741B (en
Inventor
陈建斌
肖伟
王幸
马龙虎
沙力争
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Zhejiang Lover Health Science and Technology Development Co Ltd
Winbon Technocell New Materials Co Ltd
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Zhejiang Lover Health Science and Technology Development Co Ltd
Winbon Technocell New Materials Co Ltd
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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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • 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
    • D21H11/18—Highly hydrated, swollen or fibrillatable 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • 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
    • D21H17/56—Polyamines; Polyimines; Polyester-imides
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/02—Cellulose; Modified cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

The invention discloses a titanium composite material and application thereof in preparation of base paper, belongs to the technical field of decorative base paper, and particularly relates to a titanium composite materialThe preparation method of the composite material comprises the following steps: adding titanium dioxide into a urea solution for dispersion to obtain titanium dioxide dispersion liquid; adding a compound into the titanium dioxide dispersion liquid to prepare a titanium composite material through a preparation process; the complex comprises nanocellulose and vanillic acid methyl ester glycoside. According to the invention, titanium dioxide, cellulose and vanillic acid methyl ester glucoside are mixed in the urea solution to prepare the titanium composite material, and the obtained titanium composite material is used for preparing base paper, wherein the base paper has high tightness degree, and the tightness degree is 0.9-1.2g/cm3(ii) a The wet tensile strength of the base paper is good, and the longitudinal wet tensile strength is 28-35N/15 m; the base paper has good tearing strength and a tearing index of 8-12 mN.m2·g‑1(ii) a The base paper has good bursting strength and bursting index of 1.7-2.3 KPa.m2·g‑1。

Description

Titanium composite material and application thereof in preparation of base paper
Technical Field
The invention belongs to the technical field of decorative base paper, and particularly relates to a titanium composite material and application thereof in base paper preparation.
Background
The decorative base paper industry develops vigorously in recent years, and particularly, the products of the decorative base paper industry are widely applied under the driving action of the real estate industry. Wood pulp and titanium dioxide are main raw materials of decorative base paper, are produced by a series of special manufacturing processes, and are required to be printed, resin dipped and the like in the later period, and are mainly used for surface decoration, such as laminate flooring, furniture, interior decoration of vehicles and ships and the like. The decorative paper in China is not only various in types, but also thousands of colors and patterns, the surface patterns of the artificial board decorated by the decorative paper are rich and colorful, the visual effect is good, and compared with the ordinary artificial board without decoration, the artificial board has more excellent performance, better wear resistance, scratch resistance, pollution resistance and the like. The development history of the decorative base paper in China is only more than forty years, and the wood resources in China are deficient, the decorative base paper is taken as the manufacturing raw material of the decorative plate, is popular in the industry, and the research and production become hot spots.
Disclosure of Invention
The invention aims to provide a titanium composite material which can be used for preparing base paper.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a titanium composite material is prepared by the following steps:
adding titanium dioxide into a urea solution for dispersion to obtain titanium dioxide dispersion liquid;
adding a compound into the titanium dioxide dispersion liquid to prepare a titanium composite material through a preparation process; the complex comprises nanocellulose and vanillic acid methyl ester glucoside.
Preferably, in the preparation of the nano-cellulose, the cotton pulp is added into a sulfuric acid solution, stirred and reacted for 0.5 to 3 hours at the temperature of 40 to 60 ℃, mixed with distilled water after the reaction is finished, stopped the reaction, dialyzed, filtered and dried to obtain the nano-cellulose.
More preferably, the mass fraction of sulfuric acid of the sulfuric acid solution is 60-70 wt%.
More preferably, the cotton pulp is added in an amount of 1.5 to 6 wt% of the sulfuric acid solution.
More preferably, the amount of distilled water used is 10 times or more the mass fraction of the sulfuric acid solution.
Preferably, the complex comprises carboxymethyl cellulose.
Preferably, the composite contains carboxymethyl cellulose and polyethyleneimine.
Preferably, the composite material is in the form of a film.
Preferably, the film-like composite is used in shredded form.
Preferably, the titanium composite material is obtained by mutually interweaving titanium dioxide, nano-cellulose and vanillic acid methyl ester glucoside, wherein the content of the titanium dioxide is less than 33.33wt% of the nano-cellulose, and the content of the vanillic acid methyl ester glucoside is more than 5wt% of the nano-cellulose.
Preferably, in the preparation of the titanium composite material, the titanium dioxide is added into the urea solution for dispersion to obtain titanium dioxide dispersion liquid, the nanocellulose and the vanillic acid methyl ester glucoside are added, the mixture is stirred and mixed to obtain the titanium composite solution, the titanium composite solution is kept stand for 0.5 to 3 hours at the temperature of between 20 and 40 ℃, defoaming and the titanium composite material is obtained by coagulation in 8 to 10 weight percent of sulfuric acid coagulation bath through a tape casting method. The titanium dioxide and the nano-cellulose fiber are interwoven and molded to form a spider-web-shaped fiber network structure, and the spider-web-shaped fiber network structure has high binding force and high stability. The titanium dioxide and the nanocellulose are prepared into the titanium composite material, and the titanium composite material can improve the performance of the base paper after being used for preparing the base paper. Through further research, the methyl vanillate glucoside, the nano-cellulose and the titanium dioxide are jointly used for preparing the titanium composite material, after the titanium dioxide is used for preparing the base paper, the retention rate of the titanium dioxide is improved, the tightness of the base paper is greatly improved, the longitudinal wet tensile strength of the base paper is improved, the tear strength of the base paper is improved, and the breaking strength of the base paper is improved.
More preferably, the urea solution has a urea content of 0.9-6 wt%.
More preferably, the content of the titanium dioxide in the titanium dioxide dispersion liquid is 0.5-2 wt%.
More preferably, the addition amount of the nano-cellulose is 2-6 wt% of the titanium dioxide dispersion liquid.
More preferably, the addition amount of the vanillic acid methyl ester glucoside is 0.3-2.4 wt% of the titanium dioxide dispersion liquid.
More preferably, carboxymethyl cellulose can be added in the preparation of the titanium composite material, and the addition amount of the carboxymethyl cellulose is 1-6 wt% of the titanium dioxide dispersion liquid.
More preferably, polyethyleneimine can be added in the preparation of the titanium composite material, and the addition amount of the polyethyleneimine is 0.5-4 wt% of the titanium dioxide dispersion liquid.
The invention aims to provide base paper containing a titanium composite material and having high tightness, good wet tensile strength, good tear strength and good burst strength.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a base paper comprising: a base paper comprising the titanium composite material.
Preferably, the body of the base paper is softwood fiber and hardwood fiber.
Preferably, the base paper contains an auxiliary agent, wherein the auxiliary agent is CPAM, sodium polyacrylate and polyamide epichlorohydrin.
Preferably, the invention discloses a preparation method of base paper, which comprises the steps of compounding a softwood pulp board and a hardwood pulp board to obtain a mixed wood pulp board, adding the mixed wood pulp board into distilled water, pulping and preparing the base paper by adopting a conventional papermaking technology.
More preferably, the mixed wood-pulp board ratio is: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board.
Still more preferably, the content of the hardwood pulp in the mixed wood pulp sheet is 60 to 80 wt%.
More preferably, in the preparation of the base paper, the mixed wood pulp board and the titanium composite material are added into distilled water, soaked for more than 8h at the temperature of 20-40 ℃, serially connected with a defibrator and a pulping machine for free pulping, and pulped to 35-45 DEG SR to obtain titanium composite pulp, and the base paper is obtained by adding auxiliary agents, uniformly mixing, papermaking forming, pressing and drying.
Still more preferably, the mixed wood pulp sheet is added in an amount of 8 to 16 wt% based on the distilled water.
Still more preferably, the titanium composite is added in an amount of 6 to 21 wt% of the mixed wood pulp sheet.
Still more preferably, the auxiliaries are CPAM, sodium polyacrylate and polyamide epichlorohydrin.
Still more preferably, the CPAM is added in an amount of 0.05 to 0.6 wt% of the mixed wood pulp sheet.
Still more preferably, the sodium polyacrylate is added in an amount of 0.6 to 3wt% of the mixed wood pulp sheet.
Still more preferably, 0.3-2 wt% of the polyamide epichlorohydrin mixed wood pulp sheet.
Still more preferably, methyl cyclopentenone alcohol propionate may be added into the assistant in the amount of 0.06-1.2 wt% of the mixed wood pulp board. In order to improve the performance of the base paper, the methyl cyclopentenone alcohol propionate is added into the titanium composite pulp prepared from the base paper as an auxiliary agent and mixed, and the tightness, the wet tensile strength, the tearing strength and the breaking strength of the obtained base paper are all improved, which shows that the methyl cyclopentenone alcohol propionate used in the auxiliary agent has the effect of further improving the performance of the base paper.
The invention discloses application of vanillic acid methyl ester glucoside in preparing a titanium composite material.
The invention discloses application of the titanium composite material in preparation of base paper.
According to the invention, titanium dioxide, cellulose and vanillic acid methyl ester glucoside are mixed in the urea solution to prepare the titanium composite material, and the obtained titanium composite material is used for preparing base paper, so that the method has the following beneficial effects: the base paper has high tightness of 0.9-1.2g/cm3(ii) a The wet tensile strength of the base paper is good, and the longitudinal wet tensile strength is 28-35N/15 m; the base paper has good tearing strength and a tearing index of 8-12 mN.m2·g-1(ii) a The base paper has good bursting strength and bursting index of 1.7-2.3 KPa.m2·g-1. Therefore, the base paper contains the titanium composite material and has high tightness, good wet tensile strength, good tearing strength and good burst strength.
Drawings
FIG. 1 is a base paper tightness chart;
FIG. 2 is a graph of wet tensile strength of a base paper in the machine direction;
FIG. 3 is a graph of the tear index of base paper;
FIG. 4 is a graph of the burst index of base paper.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:
example 1:
a method for preparing a titanium composite material,
preparing nano-cellulose: adding the cotton pulp into a sulfuric acid solution, stirring and reacting for 1.5h at the temperature of 50 ℃, mixing with distilled water after the reaction is finished, stopping the reaction, dialyzing, filtering and drying to obtain the nano-cellulose. The mass fraction of the sulfuric acid in the sulfuric acid solution is 60 wt%, the addition amount of the cotton pulp is 4 wt% of the sulfuric acid solution, and the use amount of the distilled water is 15 times of the mass fraction of the sulfuric acid solution.
Preparing a titanium composite material: adding titanium dioxide into a urea solution for dispersion to obtain a titanium dioxide dispersion solution, adding nanocellulose and vanillic acid methyl ester glucoside, stirring and mixing to obtain a titanium composite solution, standing at the temperature of 30 ℃ for 1h, defoaming, performing a tape casting method, and solidifying in a 10 wt% sulfuric acid solidification bath to obtain the titanium composite material. The urea content in the urea solution is 3.6 wt%, the titanium dioxide content in the titanium dioxide dispersion liquid is 1.2 wt%, the addition amount of the nanocellulose is 5wt% of the titanium dioxide dispersion liquid, and the addition amount of the vanillic acid methyl ester glucoside is 2.1 wt% of the titanium dioxide dispersion liquid.
Example 2:
a method for preparing a titanium composite material,
preparing nano-cellulose: adding the cotton pulp into a sulfuric acid solution, stirring and reacting for 1.5h at the temperature of 50 ℃, mixing with distilled water after the reaction is finished, stopping the reaction, dialyzing, filtering and drying to obtain the nano-cellulose. The mass fraction of the sulfuric acid in the sulfuric acid solution is 60 wt%, the addition amount of the cotton pulp is 4 wt% of the sulfuric acid solution, and the use amount of the distilled water is 15 times of the mass fraction of the sulfuric acid solution.
Preparing a titanium composite material: adding titanium dioxide into a urea solution for dispersion to obtain a titanium dioxide dispersion solution, adding carboxymethyl cellulose, nano-cellulose and vanillic acid methyl ester glucoside, stirring and mixing to obtain a titanium composite solution, standing for 1h at the temperature of 30 ℃, defoaming, adopting a tape casting method, and solidifying in a 10 wt% sulfuric acid solidification bath to obtain the titanium composite material. The urea content in the urea solution was 3.6 wt%, the titanium dioxide content in the titanium dioxide dispersion was 1.2 wt%, the amount of carboxymethyl cellulose added was 4 wt% of the titanium dioxide dispersion, the amount of nanocellulose added was 5wt% of the titanium dioxide dispersion, and the amount of vanillic acid methyl ester glycoside added was 2.1 wt% of the titanium dioxide dispersion.
Example 3:
a method for preparing a titanium composite material,
preparing nano-cellulose: adding the cotton pulp into a sulfuric acid solution, stirring and reacting for 1.5h at the temperature of 50 ℃, mixing with distilled water after the reaction is finished, stopping the reaction, dialyzing, filtering and drying to obtain the nano-cellulose. The mass fraction of the sulfuric acid in the sulfuric acid solution is 60 wt%, the addition amount of the cotton pulp is 4 wt% of the sulfuric acid solution, and the use amount of the distilled water is 15 times of the mass fraction of the sulfuric acid solution.
Preparing a titanium composite material: adding titanium dioxide into a urea solution for dispersion to obtain a titanium dioxide dispersion solution, adding carboxymethyl cellulose, nano-cellulose, polyethyleneimine and vanillic acid methyl ester glucoside, stirring and mixing to obtain a titanium composite solution, standing for 1h at the temperature of 30 ℃, defoaming, adopting a tape casting method, and solidifying in a 10 wt% sulfuric acid solidification bath to obtain the titanium composite material. The urea content in the urea solution is 3.6 wt%, the titanium dioxide content in the titanium dioxide dispersion liquid is 1.2 wt%, the addition amount of the carboxymethyl cellulose is 4 wt% of the titanium dioxide dispersion liquid, the addition amount of the nano cellulose is 5wt% of the titanium dioxide dispersion liquid, the addition amount of the polyethyleneimine is 2 wt% of the titanium dioxide dispersion liquid, and the addition amount of the vanillic acid methyl ester glycoside is 2.1 wt% of the titanium dioxide dispersion liquid.
Example 4:
a method for preparing a titanium composite material,
compared with the example 3, the difference of the embodiment is only that in the preparation of the titanium composite material, the addition amount of the vanillic acid methyl ester glucoside is 1.6 wt% of the titanium dioxide dispersion liquid.
Example 5:
a method for preparing a titanium composite material,
compared with the example 3, the difference of the embodiment is only that in the preparation of the titanium composite material, the addition amount of the vanillic acid methyl ester glucoside is 0.7 wt% of the titanium dioxide dispersion liquid.
Example 6:
a method for preparing base paper, which comprises the following steps,
mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibering machine and a pulping machine in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, uniformly mixing, making into paper, pressing, and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 1.
Example 7:
a method for preparing base paper, which comprises the following steps,
mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibering machine and a pulping machine in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, uniformly mixing, making into paper, pressing, and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 2.
Example 8:
a method for preparing base paper, which comprises the following steps,
mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibering machine and a pulping machine in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, uniformly mixing, making into paper, pressing, and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 3.
Example 9:
a method for preparing base paper, which comprises the following steps,
mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibering machine and a pulping machine in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, uniformly mixing, making into paper, pressing, and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 4.
Example 10:
a method for preparing base paper, which comprises the following steps,
mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibrator and a pulping mill in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, carrying out papermaking forming, uniformly mixing, carrying out papermaking forming, squeezing and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 5.
Example 11:
a method for preparing base paper, which comprises the following steps,
preparing nano-cellulose: adding the cotton pulp into a sulfuric acid solution, stirring and reacting for 1.5h at the temperature of 50 ℃, mixing with distilled water after the reaction is finished, stopping the reaction, dialyzing, filtering and drying to obtain the nano-cellulose. The mass fraction of the sulfuric acid in the sulfuric acid solution is 60 wt%, the addition amount of the cotton pulp is 4 wt% of the sulfuric acid solution, and the use amount of the distilled water is 15 times of the mass fraction of the sulfuric acid solution.
Preparing a titanium composite material: adding titanium dioxide into a urea solution for dispersion to obtain a titanium dioxide dispersion solution, adding carboxymethyl cellulose, nano-cellulose, polyethyleneimine and vanillic acid methyl ester glucoside, stirring and mixing to obtain a titanium composite solution, standing for 1h at the temperature of 30 ℃, defoaming, adopting a tape casting method, and solidifying in a 10 wt% sulfuric acid solidification bath to obtain the titanium composite material. The urea content in the urea solution is 3.6 wt%, the titanium dioxide content in the titanium dioxide dispersion liquid is 1.2 wt%, the addition amount of the carboxymethyl cellulose is 4 wt% of the titanium dioxide dispersion liquid, the addition amount of the nano cellulose is 5wt% of the titanium dioxide dispersion liquid, the addition amount of the polyethyleneimine is 2 wt% of the titanium dioxide dispersion liquid, and the addition amount of the vanillic acid methyl ester glycoside is 2.1 wt% of the titanium dioxide dispersion liquid.
Mixing the mixed wood pulp board: and respectively tearing the softwood pulp board and the hardwood pulp board into small pulp pieces, and then compounding the softwood pulp board and the hardwood pulp board to obtain the mixed wood pulp board. The content of the hardwood pulp sheet in the mixed wood pulp sheet was 70 wt%.
Preparing base paper: adding the mixed wood pulp board and the titanium composite material into distilled water, soaking for 12h at the temperature of 30 ℃, connecting a defibering machine and a pulping machine in series for free pulping, pulping to 40-degree SR to obtain titanium composite pulp, adding an auxiliary agent, uniformly mixing, making into paper, pressing, and drying to obtain base paper. The addition amount of the mixed wood pulp board is 12 wt% of distilled water, the addition amount of the titanium composite material is 18 wt% of the mixed wood pulp board, the auxiliary agents are CPAM, sodium polyacrylate, methyl cyclopentenolol alcohol propionate and polyamide epichlorohydrin, the addition amount of the CPAM is 0.3 wt% of the mixed wood pulp board, the addition amount of the sodium polyacrylate is 1.6 wt% of the mixed wood pulp board, the addition amount of the methyl cyclopentenolol alcohol propionate is 0.12 wt% of the mixed wood pulp board, and the addition amount of the polyamide epichlorohydrin is 1.2 wt% of the mixed wood pulp board. The titanium composite material was prepared using the method and conditions of example 3.
Example 12:
a method for preparing base paper, which comprises the following steps,
this example is compared to example 11, except that the amount of methylcyclopentenol propionate added in the base paper preparation was 0.6 wt% of the mixed wood pulp sheet.
Example 13:
a method for preparing base paper, which comprises the following steps,
this example is compared to example 11, except that the amount of methylcyclopentenol propionate added in the base paper preparation was 1 wt% of the mixed wood pulp sheet.
Example 14:
a method for preparing base paper, which comprises the following steps,
compared with the example 13, the difference of the embodiment is only that in the preparation of the titanium composite material, the addition amount of the vanillic acid methyl ester glucoside is 1.3 wt% of the titanium dioxide dispersion liquid.
Example 15:
a method for preparing base paper, which comprises the following steps,
compared with the example 13, the difference of the embodiment is only that in the preparation of the titanium composite material, the addition amount of the vanillic acid methyl ester glucoside is 0.9 wt% of the titanium dioxide dispersion liquid.
Comparative example 1:
this comparative example is different from example 6 only in that vanillic acid methyl ester glycoside is not added in the preparation of the titanium composite.
Comparative example 2:
this comparative example is different from example 7 only in that vanillic acid methyl ester glycoside is not added in the preparation of the titanium composite.
Comparative example 3:
this comparative example is different from example 8 only in that vanillic acid methyl ester glycoside is not added in the preparation of the titanium composite.
Test example:
testing the physical properties of the base paper:
the base papers prepared by the methods of the examples and comparative examples had a papermaking amount of 80g/m2。
Tightness: the test sample is the base paper and is tested by referring to the method of GB/T451.3-2002.
Tensile strength: the test sample is the base paper and is tested by referring to the method of GB/T12914-2008.
Tear strength: the test sample is the base paper and is tested by referring to the method of GB/T455-2002.
Burst strength: the test sample is the base paper and is tested by referring to the method of GB/T454-2020.
The results of the tightness test of the base paper prepared according to the present invention are shown in FIG. 1, wherein the tightness of the base paper prepared by the method of example 6 is 0.983g/cm3The base paper prepared by the method of example 7 had a tightness of 1.014g/cm3The base paper prepared by the method of example 8 had a tightness of 1.059g/cm3Comparative example 1 the base paper prepared according to the method has a tightness of 0.824g/cm3Compared with the comparative example 1, the embodiment 6 shows that after the titanium dioxide, the nano-cellulose and the methyl vanillate glucoside are used together to prepare the titanium composite material, the tightness of the base paper is greatly improved after the titanium composite material is used for preparing the base paper, and the tightness of the base paper obtained by the embodiment 6 is improved by 19.30 percent compared with that of the base paper obtained by the comparative example 1; example 7 compares to example 6, showing titanium dioxide in combination with carboxymethylcellulose, nanocellulose, vanillic acid methyl esterAfter glucoside is used together to prepare the titanium composite material, the tightness of the base paper is improved after the titanium composite material is used for preparing the base paper, and compared with the comparative example 2, the combination of the embodiment 7 and the embodiment 6 shows that in the titanium composite material, the use of carboxymethyl cellulose can improve the tightness of the finally prepared base paper to a certain extent, but mainly has the reinforcing effect of the joint use of titanium dioxide, nano-cellulose and vanillic acid methyl ester glucoside, and when the titanium dioxide, the carboxymethyl cellulose and the nano-cellulose are used without the vanillic acid methyl ester glucoside, the tightness of the finally prepared base paper is greatly reduced; example 13 shows that the use of methylcyclopentenol propionate in the preparation of base paper further improves the tightness of the base paper obtained, compared to example 8.
The tightness of the base paper prepared by the invention is 0.9-1.2g/cm3。
The results of the machine direction wet tensile strength test of the base paper prepared by the present invention are shown in FIG. 2, wherein the machine direction wet tensile strength of the base paper prepared by the method of example 6 is 29.2N/15m, the machine direction wet tensile strength of the base paper prepared by the method of example 7 is 30.7N/15m, the machine direction wet tensile strength of the base paper prepared by the method of example 8 is 32.2N/15m, the longitudinal wet tensile strength of the base paper prepared by the method of comparative example 1 is 26.4N/15m, and compared with the method of comparative example 1, the embodiment 6 shows that after the titanium dioxide is used together with the nano-cellulose and the vanillic acid methyl ester glucoside to prepare the titanium composite material, after the titanium composite material is used for preparing the base paper, the longitudinal wet tensile strength of the base paper is greatly improved, and the longitudinal wet tensile strength of the base paper obtained by the method in the embodiment 6 is improved by 10.61 percent compared with the longitudinal wet tensile strength of the base paper obtained by the method in the comparative example 1; compared with the example 6, the example 7 shows that after the titanium dioxide is used together with the carboxymethyl cellulose, the nano-cellulose and the methyl vanilate glucoside to prepare the titanium composite material, the longitudinal wet tensile strength of the base paper is improved after the titanium composite material is used for preparing the base paper, and compared with the comparative example 2, the example 7 shows that the example 6 shows that in the titanium composite material, although the use of the carboxymethyl cellulose can improve the longitudinal wet tensile strength of the finally prepared base paper to a certain extent, the reinforcing effect of the common use of the titanium dioxide, the nano-cellulose and the methyl vanilate glucoside is mainly used, and when the titanium dioxide, the carboxymethyl cellulose and the nano-cellulose are used without the methyl vanilate glucoside, the longitudinal wet tensile strength of the finally prepared base paper is greatly reduced; example 13 compares to example 8, showing that the use of methylcyclopentenol propionate in the base paper preparation further improves the wet tensile strength in the machine direction of the base paper obtained.
The longitudinal wet tensile strength of the base paper prepared by the invention is 28-35N/15 m.
The tear strength test results of the base paper prepared according to the present invention are shown in FIG. 3, wherein the tear index of the base paper prepared by the method of example 6 is 8.1mN · m2·g-1The base paper prepared by the method of example 7 had a tear index of 8.5mN · m2·g-1The base paper prepared by the method of example 8 had a tear index of 9.3mN · m2·g-1Comparative example 1 the base paper prepared according to the method had a tear index of 6.4mN · m2·g-1Compared with the comparative example 1, the embodiment 6 shows that after the titanium dioxide, the nano-cellulose and the methyl vanillate glucoside are used together to prepare the titanium composite material, and the titanium composite material is used for preparing the base paper, the tearing strength of the base paper is greatly improved, and the tearing index of the base paper obtained by the embodiment 6 is improved by 26.56% compared with that of the base paper obtained by the comparative example 1; compared with the example 6, the example 7 shows that the tear strength of the base paper is improved after the titanium dioxide is used together with the carboxymethyl cellulose, the nano-cellulose and the methyl vanilate glucoside to prepare the titanium composite material, and compared with the comparative example 2, the example 7 shows that the tear strength of the base paper is greatly reduced when the titanium dioxide, the carboxymethyl cellulose and the methyl vanilate glucoside are used without the methyl vanilate glucoside, although the tear strength of the finally prepared base paper can be improved to a certain extent by using the carboxymethyl cellulose in the titanium composite material by combining with the example 6, mainly by the reinforcing effect of the common use of the titanium dioxide, the nano-cellulose and the methyl vanilate glucoside; example 13 and exampleCompared with the prior art, the method shows that the tear strength of the obtained base paper is further improved by using the methyl cyclopentenolol propionate in the preparation of the base paper.
The tearing index of the base paper prepared by the invention is 8-12 mN.m2·g-1。
The results of the burst strength test of the base paper prepared according to the present invention are shown in FIG. 4, in which the burst index of the base paper prepared by the method of example 6 is 1.82KPa m2·g-1The base paper prepared by the method of example 7 had a burst index of 1.86KPa m2·g-1The base paper prepared by the method of example 8 had a burst index of 1.93KPa m2·g-1Comparative example 1 the tear index of the base paper prepared by the method of comparative example 1 was 1.58KPa m2·g-1Compared with the comparative example 1, the embodiment 6 shows that after the titanium dioxide, the nano-cellulose and the methyl vanillate glucoside are used together to prepare the titanium composite material, the rupture strength of the base paper is greatly improved after the titanium composite material is used for preparing the base paper, and the rupture index of the base paper obtained by the embodiment 6 is improved by 15.19 percent relative to the rupture index of the base paper obtained by the comparative example 1; compared with the example 6, the example 7 shows that after the titanium dioxide is used together with the carboxymethyl cellulose, the nano-cellulose and the methyl vanilate glucoside to prepare the titanium composite material, the rupture strength of the base paper is improved after the titanium composite material is used for preparing the base paper, and compared with the comparative example 2, the example 7 shows that in the titanium composite material, the use of the carboxymethyl cellulose can improve the rupture strength of the finally prepared base paper to a certain extent, but mainly has the reinforcing effect of the common use of the titanium dioxide, the nano-cellulose and the methyl vanilate glucoside, and when the titanium dioxide, the carboxymethyl cellulose and the nano-cellulose are used without the methyl vanilate glucoside, the rupture strength of the finally prepared base paper is greatly reduced; example 13 shows that the use of methylcyclopentenol propionate in the preparation of base paper further improves the burst strength of the base paper obtained, compared to example 8.
The base paper prepared by the invention has a burst index of 1.7-2.3 KPa.m2·g-1。
The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims (10)

1. A titanium composite material is prepared by the following steps:
adding titanium dioxide into a urea solution for dispersion to obtain titanium dioxide dispersion liquid;
adding a compound into the titanium dioxide dispersion liquid to prepare a titanium composite material through a preparation process; the complex comprises nanocellulose and vanillic acid methyl ester glycoside.
2. The titanium composite according to claim 1, wherein: the compound contains carboxymethyl cellulose.
3. The titanium composite according to claim 1, wherein: the compound contains carboxymethyl cellulose and polyethyleneimine.
4. The titanium composite according to claim 1, wherein: the composite material is in the form of a film.
5. The titanium composite according to claim 1, wherein: the titanium composite material is obtained by mutually interweaving titanium dioxide, nano-cellulose and vanillic acid methyl ester glucoside, wherein the content of the titanium dioxide is less than 33.33wt% of the nano-cellulose, and the content of the vanillic acid methyl ester glucoside is more than 5wt% of the nano-cellulose.
6. A base paper comprising: a base paper comprising the titanium composite material according to any one of claims 1 to 5.
7. The base paper of claim 6, wherein: the body of the base paper is made of softwood fiber and hardwood fiber.
8. The base paper of claim 6, wherein: the base paper contains an auxiliary agent, wherein the auxiliary agent is CPAM, sodium polyacrylate and polyamide epichlorohydrin.
9. Use of vanillic acid methyl ester glycoside in the preparation of titanium composite materials.
10. Use of the titanium composite material according to any one of claims 1 to 5 in the preparation of base paper.
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