CN110670414B - Heat-resistant waterproof wallpaper and preparation method thereof - Google Patents

Heat-resistant waterproof wallpaper and preparation method thereof Download PDF

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CN110670414B
CN110670414B CN201910984212.0A CN201910984212A CN110670414B CN 110670414 B CN110670414 B CN 110670414B CN 201910984212 A CN201910984212 A CN 201910984212A CN 110670414 B CN110670414 B CN 110670414B
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parts
heat
wallpaper
base paper
resistant waterproof
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CN110670414A (en
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许建峰
朱凤霞
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Huaiyin Normal University
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Huaiyin Normal University
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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
    • 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
    • D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
    • 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
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)

Abstract

The invention discloses heat-resistant waterproof wallpaper, which comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper; the base paper is made of anion fibers, bamboo fibers and PFT fibers, and the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 53-68 parts of modified organic silicon resin, 10-12 parts of modified titanium dioxide, 9-10 parts of aluminum oxide, 6-7 parts of silicon dioxide, 7.5-8.5 parts of glass powder, 9-10 parts of talcum powder, 6-7 parts of silane coupling agent, 5-6 parts of emulsifier, 0.4-0.5 part of defoaming agent and 0.6-0.7 part of flatting agent. The base paper prepared by the invention is environment-friendly and easy to degrade, and can continuously release negative ions which can purify air and have a health care effect; the heat-resistant waterproof coating is coated on the surface of the base paper, the acting force between a coating film and the base paper is strong, the overall uniformity of the wallpaper is good, the wallpaper has good heat-resistant and hydrophobic properties, and can purify indoor air, so that the wallpaper has wide application value.

Description

Heat-resistant waterproof wallpaper and preparation method thereof
Technical Field
The invention belongs to the technical field of wallpaper, and particularly relates to heat-resistant waterproof wallpaper and a preparation method thereof.
Background
Wallpaper, also called wallpaper, is an interior decoration material for pasting wall surfaces, and is widely used for interior decoration of houses, offices, hotels, and the like. The wallpaper has the characteristics of various colors, rich patterns, luxury, safety, environmental protection, convenient construction, proper price and the like which are incomparable with various other interior decoration materials, so the wallpaper has wide popularization and application in the decoration field. The surface of the base paper is usually processed by different procedures, such as coating, printing, embossing or surface coating, and finally is cut and packaged for delivery. The existing wallpaper is still lack of heat resistance and waterproof performance, and the wallpaper is easy to deform, rot and the like, so that the service life of the wallpaper is influenced.
Chinese patent with patent number CN201110258519.6 discloses an environment-friendly wall decorative wallpaper material and a preparation method thereof, wherein the wallpaper takes a raw paper layer as a base layer, and then is coated on one side or two sides of the base layer; the coating layer comprises 60-90 parts by weight of PE plastic and 15-25 parts by weight of thermoplastic ethylene propylene diene monomer dynamic vulcanized rubber, and the wallpaper has the advantages of no toxicity, environmental protection, good printing performance and the like. However, the production process of the wallpaper is complex, and the rubber layer coated on the surface of the base layer has the problem of poor adhesion of the coating layer due to poor compatibility of the rubber and the fibrous base layer, so that the wallpaper has the defects of poor temperature resistance and poor water resistance.
Disclosure of Invention
The invention aims to provide the heat-resistant waterproof wallpaper and the preparation method thereof, the anion fiber, the bamboo fiber and the PFT fiber are adopted as raw materials, the prepared base paper is not only environment-friendly and easy to degrade, but also can continuously release anions which can purify air and have health care effect on human bodies; the surface of the base paper is coated with a layer of heat-resistant waterproof coating, and the organic silicon resin and the titanium dioxide are modified, so that on one hand, the acting force of a coating film and the base paper is enhanced, the adhesive force of the coating film can be improved, and the integral uniformity of the wallpaper is improved; on the other hand, the wallpaper has good heat-resistant and hydrophobic properties, and the indoor air purification effect can be improved, so that the environment-friendly heat-resistant waterproof wallpaper is prepared, and has wide application value.
The purpose of the invention can be realized by the following technical scheme:
a heat-resistant waterproof wallpaper comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 53-68 parts of modified organic silicon resin, 10-12 parts of modified titanium dioxide, 9-10 parts of aluminum oxide, 6-7 parts of silicon dioxide, 7.5-8.5 parts of glass powder, 9-10 parts of talcum powder, 6-7 parts of silane coupling agent, 5-6 parts of emulsifier, 0.4-0.5 part of defoaming agent, 0.6-0.7 part of flatting agent and 180 parts of deionized water 145-doped material.
Further, the modified silicone resin is prepared by the following method:
sequentially adding trifluoropropylmethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane and gamma-aminopropyltriethoxysilane into a three-neck flask, heating, stirring, refluxing, condensing, heating to the temperature of 112-117 ℃, adding tetramethylammonium hydroxide, reacting for 6-7h, heating to the temperature of 132-138 ℃, reacting for 25-30min, slowly adding maleic anhydride at the temperature of 70-72 ℃, and continuing to react for 1h to obtain the modified organic silicon resin.
Further, the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the octamethylcyclotetrasiloxane to the tetramethyltetravinylcyclotetrasiloxane to the gamma-aminopropyltriethoxysilane to the maleic anhydride is 2:1:1:0.5: 0.8; the adding amount of the tetramethylammonium hydroxide is 1.2 percent of the mass of the system.
Further, the modified titanium dioxide is produced by the following method;
weighing 2mL of N, N-dimethylformamide and 56mL of deionized water, mixing, magnetically stirring at normal temperature for 15min, adding 1.8g of titanium dioxide powder, continuously magnetically stirring at normal temperature for 30min, transferring the mixed solution into a hydrothermal reaction kettle, reacting at 150 ℃ for 20h, fully cooling, washing the product with alcohol and water, drying, and grinding to obtain the modified titanium dioxide.
A preparation method of heat-resistant waterproof wallpaper comprises the following steps:
first step, preparation of base paper
Mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 90-100g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 45-50 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 20-24min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
And coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 10-12min, then drying in an oven at 105 ℃ for 5-7min, and naturally cooling to obtain the heat-resistant waterproof wallpaper.
Further, the coating weight of the heat-resistant waterproof coating in the third step is 90-110g/m2。
The invention has the beneficial effects that:
the base paper provided by the invention adopts the anion fiber as a main matrix, and is supplemented with the bamboo fiber and the PFT fiber (polyethylene terephthalate fiber), so that the prepared base paper not only can continuously release anions, but also has the advantages of environmental friendliness and easiness in degradation; the released negative ions have the functions of dust fall, sterilization and harmful gas purification, and have the health-care effects of improving the physiological function of a human body, improving the immunity, eliminating fatigue and relieving chronic diseases;
the heat-resistant waterproof coating is coated on the surface of base paper, the coating takes modified organic silicon resin as a film forming material, and is added with pigment, filler and additives, and the organic silicon resin has the advantages of high temperature resistance, waterproofness, good weather resistance and the like because the bond energy of Si-O bonds in the main chain of the organic silicon resin is 452kJ/mol and is far greater than the bond energy of C-C bonds 356 kJ/mol; the polysiloxane is generated through polymerization reaction among different siloxanes, wherein trifluoropropylmethyl cyclotrisiloxane introduces a fluorocarbon side chain into a polysiloxane molecular chain, tetramethyltetravinylcyclotetrasiloxane introduces an unsaturated double bond into the polysiloxane molecular chain, and maleic anhydride introduces a carboxyl group into the polysiloxane molecular chain, so that the modified organic silicon resin molecular chain contains organic fluorine, carboxyl and unsaturated double bonds, wherein the alkyl side chain and the fluorocarbon side chain have hydrophobicity, the main chain is a Si-O chain segment, the electronegativity between two atoms is high, a film is easily formed on the surface of base paper, and the alkyl side chain and the fluorocarbon side chain extend to the air during film formation, so that the water resistance and the oil resistance of the wallpaper are improved; meanwhile, carboxyl in an organic silicon molecular chain can react with hydroxyl on the surface of the base material fiber, unsaturated double bonds can generate a crosslinking reaction with the surface layer of the base material, and the binding force of the coating and the base material is improved;
the talcum powder in the pigment and filler has a small amount of hydroxyl on the surface, can react with carboxyl in the modified organic silicon resin and the residual hydroxyl, and mainly plays a film forming role by the silicon resin at low temperature (normal temperature); when the temperature reaches the melting point of the glass powder, the glass powder can be melted into a film so as to replace silicon resin to have an adhesion effect on pigments and fillers, show a secondary film forming effect and play a stronger high-temperature heat insulation and corrosion prevention effect on base paper; meanwhile, Al in the pigment and filler2O3With SiO2At a higher temperatureHigh time reaction, and Al in talcum powder2Si4O10(OH)2The thermal decomposition reaction can generate crystal Al with good high temperature resistance2(SiO4) O, under alkaline conditions at elevated temperatures, Al2O3Can be converted into low-melting-point phase Al (OH)3The curing and filling effects are achieved on the gaps generated by shrinkage in the coating, and the factors reduce the decomposition rate of the silicone resin and other fillers, so that the coating has excellent high-temperature resistance;
meanwhile, the modified titanium dioxide prepared by a hydrothermal method is N-doped TiO2In one aspect, doped N atoms replace TiO2Partial O atoms in the crystal lattice lead to the increase of the crystal face spacing, and meanwhile, under the conditions of high temperature and high pressure reaction, crystal nuclei are mutually aggregated, so that the crystal grain size is increased, the crystallization degree is improved, and on the other hand, the energy level of N can be introduced due to N doping, so that the doped TiO is enabled to be2The absorption performance of visible light is enhanced, the photocatalytic activity is higher, and the degradation efficiency of indoor formaldehyde is improved; in addition, the surface of the modified titanium dioxide prepared by a hydrothermal method contains more hydroxyl groups, so that the modified titanium dioxide can react with carboxyl groups on the surface of a coating film forming substrate (modified organic silicon resin), the integral uniformity of the coating is improved, hydrogen bonds can be formed with the hydroxyl groups on the surface of base paper fibers, and the adhesive force of a coating film is improved;
the base paper provided by the invention adopts the anion fibers, the bamboo fibers and the PFT fibers as raw materials, and the prepared base paper is environment-friendly and easy to degrade, and can continuously release anions capable of purifying air and having a health care effect on a human body; the surface of the base paper is coated with a layer of heat-resistant waterproof coating, and the organic silicon resin and the titanium dioxide are modified, so that on one hand, the acting force of a coating film and the base paper is enhanced, the adhesive force of the coating film can be improved, and the integral uniformity of the wallpaper is improved; on the other hand, the wallpaper has good heat-resistant and hydrophobic properties, and the indoor air purification effect can be improved, so that the environment-friendly heat-resistant waterproof wallpaper is prepared, and has wide application value.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A heat-resistant waterproof wallpaper comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper;
wherein, the base paper is prepared by the following method:
mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the quantitative 90g/m by the paper making process of the wallpaper2Obtaining base paper from the wallpaper;
the base paper adopts the anion fiber as the main matrix and is assisted by the bamboo fiber and the PFT fiber (polyethylene terephthalate fiber), and the prepared base paper not only can continuously release anions, but also has the advantages of environmental protection and easy degradation; the released negative ions have the functions of dust fall, sterilization and harmful gas purification, and have the health-care effects of improving the physiological function of a human body, improving the immunity, eliminating fatigue and relieving chronic diseases;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 53-68 parts of modified organic silicon resin, 10-12 parts of modified titanium dioxide, 9-10 parts of aluminum oxide, 6-7 parts of silicon dioxide, 7.5-8.5 parts of glass powder, 9-10 parts of talcum powder, 6-7 parts of silane coupling agent, 5-6 parts of emulsifier (fatty alcohol-polyoxyethylene ether), 0.4-0.5 part of defoaming agent, 0.6-0.7 part of flatting agent and 180 parts of deionized water 145-;
wherein, a part of hydrolyzed alkoxy in the silane coupling agent is further condensed with filler (titanium dioxide, silicon dioxide, glass powder talcum powder and mica powder) and hydroxyl in silicon resin, so that the film-forming property of the coating can be enhanced; the other part of hydrolyzed alkoxy forms hydrogen bonds with hydroxyl on the surface of the base paper, so that the adhesive force of the coating is improved;
the talcum powder has small amount of hydroxyl on its surface, can react with carboxyl in the modified organic silicon resin and residual hydroxyl, and is mainly used at low temperature (normal temperature)The silicone resin is used for film forming; when the temperature reaches the melting point of the glass powder, the glass powder can be melted into a film so as to replace silicon resin to have an adhesion effect on pigments and fillers, show a secondary film forming effect and play a stronger high-temperature heat insulation and corrosion prevention effect on base paper; meanwhile, Al in the pigment and filler2O3With SiO2Reaction at higher temperature, and Al in talc powder2Si4O10(OH)2The thermal decomposition reaction can generate crystal Al with good high temperature resistance2(SiO4) O, under alkaline conditions at elevated temperatures, Al2O3Can be converted into low-melting-point phase Al (OH)3The curing and filling effects are achieved on the gaps generated by shrinkage in the coating, and the factors reduce the decomposition rate of the silicone resin and other fillers, so that the coating has excellent high-temperature resistance;
the modified organic silicon resin is prepared by the following method:
sequentially adding trifluoropropylmethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane and gamma-aminopropyltriethoxysilane into a three-neck flask, heating, stirring, refluxing, condensing, heating to the temperature of 112-117 ℃, adding tetramethylammonium hydroxide, reacting for 6-7h, heating to the temperature of 132-138 ℃, reacting for 25-30min, slowly adding maleic anhydride at the temperature of 70-72 ℃, and continuing to react for 1h to obtain the modified organic silicon resin;
the mass ratio of trifluoropropylmethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, gamma-aminopropyltriethoxysilane to maleic anhydride is 2:1:1:0.5: 0.8; the adding amount of the tetramethylammonium hydroxide is 1.2 percent of the mass of the system;
the bond energy of Si-O bonds in the main chain of the organic silicon resin is 452kJ/mol, which is far larger than the bond energy of 356kJ/mol of C-C bonds, so that the organic silicon resin has the advantages of high temperature resistance, good waterproofness, good weather resistance and the like; the polysiloxane is generated through polymerization reaction among different siloxanes, wherein trifluoropropylmethyl cyclotrisiloxane introduces a fluorocarbon side chain into a polysiloxane molecular chain, tetramethyltetravinylcyclotetrasiloxane introduces an unsaturated double bond into the polysiloxane molecular chain, and maleic anhydride introduces a carboxyl group into the polysiloxane molecular chain, so that the modified organic silicon resin molecular chain contains organic fluorine, carboxyl and unsaturated double bonds, wherein the alkyl side chain and the fluorocarbon side chain have hydrophobicity, the main chain is a Si-O chain segment, the electronegativity between two atoms is high, a film is easily formed on the surface of base paper, and the alkyl side chain and the fluorocarbon side chain extend to the air during film formation, so that the water resistance and the oil resistance of the wallpaper are improved; meanwhile, carboxyl in an organic silicon molecular chain can react with hydroxyl on the surface of the base material fiber, unsaturated double bonds can generate a crosslinking reaction with the surface layer of the base material, and the binding force of the coating and the base material is improved;
the modified titanium dioxide is prepared by the following method;
weighing 2mL of N, N-Dimethylformamide (DMF) and 56mL of deionized water, mixing, magnetically stirring at normal temperature for 15min, adding 1.8g of titanium dioxide powder, continuously magnetically stirring at normal temperature for 30min, transferring the mixed solution into a hydrothermal reaction kettle, reacting at 150 ℃ for 20h, fully cooling, washing the product with alcohol and water, drying, and grinding to obtain modified titanium dioxide;
modified titanium dioxide prepared by hydrothermal method is N-doped TiO2In one aspect, doped N atoms replace TiO2Partial O atoms in the crystal lattice lead to the increase of the crystal face spacing, and meanwhile, under the conditions of high temperature and high pressure reaction, crystal nuclei are mutually aggregated, so that the crystal grain size is increased, the crystallization degree is improved, and on the other hand, the energy level of N can be introduced due to N doping, so that the doped TiO is enabled to be2The absorption performance of visible light is enhanced, the photocatalytic activity is higher, and the degradation efficiency of indoor formaldehyde is improved; in addition, the surface of the modified titanium dioxide prepared by a hydrothermal method contains more hydroxyl groups, so that the modified titanium dioxide can react with carboxyl groups on the surface of a coating film forming substrate (modified organic silicon resin), the integral uniformity of the coating is improved, hydrogen bonds can be formed with the hydroxyl groups on the surface of base paper fibers, and the adhesive force of a coating film is improved;
a preparation method of heat-resistant waterproof wallpaper comprises the following steps:
first step, preparation of base paper
The negative ion fiberMixing and pulping the fiber, bamboo fiber and PFT fiber according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 90-100g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 45-50 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 20-24min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
Coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 10-12min, then drying in a 105 ℃ oven for 5-7min, and naturally cooling to obtain the heat-resistant waterproof wallpaper;
the coating weight is 90-110g/m2。
Example 1
A heat-resistant waterproof wallpaper comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 53 parts of modified organic silicon resin, 10 parts of modified titanium dioxide, 9 parts of aluminum oxide, 6 parts of silicon dioxide, 7.5 parts of glass powder, 9 parts of talcum powder, 6 parts of silane coupling agent, 5 parts of emulsifier, 0.4 part of defoaming agent, 0.6 part of flatting agent and 145 parts of deionized water;
the wallpaper is prepared by the following steps:
first step, preparation of base paper
Mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 90g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 45 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 20min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
Coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 10min, then drying in an oven at 105 ℃ for 5min, and naturally cooling to obtain the heat-resistant waterproof wallpaper;
the coating weight was 90g/m2。
Example 2
A heat-resistant waterproof wallpaper comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 62 parts of modified organic silicon resin, 11 parts of modified titanium dioxide, 9.5 parts of aluminum oxide, 6.5 parts of silicon dioxide, 8 parts of glass powder, 9.5 parts of talcum powder, 6.5 parts of silane coupling agent, 5.5 parts of emulsifier, 0.45 part of defoaming agent, 0.65 part of flatting agent and 162 parts of deionized water;
the wallpaper is prepared by the following steps:
first step, preparation of base paper
Mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 95g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 48 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 22min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
Coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 11min, then drying in an oven at 105 ℃ for 6min, and naturally cooling to obtain the heat-resistant waterproof wallpaper;
the coating weight was 100g/m2。
Example 3
A heat-resistant waterproof wallpaper comprises base paper and heat-resistant waterproof paint coated on the surface of the base paper;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 68 parts of modified organic silicon resin, 12 parts of modified titanium dioxide, 10 parts of aluminum oxide, 7 parts of silicon dioxide, 8.5 parts of glass powder, 10 parts of talcum powder, 7 parts of silane coupling agent, 6 parts of emulsifier, 0.5 part of defoaming agent, 0.7 part of flatting agent and 180 parts of deionized water;
the wallpaper is prepared by the following steps:
first step, preparation of base paper
Mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 100g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 50 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 24min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
Coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 12min, then drying in an oven at 105 ℃ for 7min, and naturally cooling to obtain the heat-resistant waterproof wallpaper;
the coating weight was 110g/m2。
Comparative example 1
The modified organic silicon resin in the raw materials of the heat-resistant waterproof coating in the example 1 is changed into the common organic silicon resin, and the rest raw materials and the preparation process are not changed.
Comparative example 2
The modified titanium dioxide in the raw materials of the heat-resistant waterproof coating in the example 1 is changed into the common titanium dioxide, and the rest raw materials and the preparation process are unchanged.
Comparative example 3
The base paper in example 1 was changed to ordinary base paper, and the remaining raw materials and preparation steps were unchanged.
Comparative example 4
Common wallpaper is sold on the market.
The following performance tests were performed on the wallpapers of examples 1-3 and comparative examples 1-4:
and (3) testing the tensile strength: according to GB/T12914 + 2008 paper and paperboard tensile strength determination, the wallpaper with the specified size is stretched to break, and the tensile strength is determined; the waterproof effect is as follows: the static contact angle of a water drop on the surface of the wallpaper is used for representing; measuring the release amount of negative ions in a unit space by using an air negative ion measuring instrument; measuring the formaldehyde removal effect of the wallpaper on the unit space according to GB/T18883; the test results are given in the following table:
Figure BDA0002236185100000121
as can be seen from the table, the wallpapers obtained in examples 1 to 3 had transverse tensile strengths of 0.36 to 0.38 kN.m-1The longitudinal tensile strength is 0.57-0.59 kN.m-1The strength of the wallpaper is slightly higher than that of the common wallpaper sold in the market, which indicates that the wallpaper is prepared by the inventionThe wallpaper can meet the use requirements in terms of strength; the wallpaper prepared in the examples 1-3 has a water contact angle of 146-; the wallpaper prepared in examples 1-3 had a negative ion release of 4750--3Compared with the comparative example 3, the base paper prepared by the invention has higher negative ion release compared with the common base paper; the formaldehyde degradation rate of the wallpaper prepared in the examples 1-3 is 86-89%, which shows that the wallpaper provided by the invention can effectively purify formaldehyde, compared with the wallpaper prepared in the comparative example 2, the wallpaper prepared by the invention has higher photocatalytic activity after being modified, and achieves better formaldehyde degradation effect, compared with the wallpaper prepared in the comparative example 3, the wallpaper prepared by the invention can release negative ions, and can effectively purify formaldehyde.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (3)

1. A heat-resistant waterproof wallpaper is characterized by comprising base paper and heat-resistant waterproof paint coated on the surface of the base paper;
the base paper is prepared by the following method:
mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 90-100g/m2Obtaining base paper;
the heat-resistant waterproof coating comprises the following raw materials in parts by weight: 53-68 parts of modified organic silicon resin, 10-12 parts of modified titanium dioxide, 9-10 parts of aluminum oxide, 6-7 parts of silicon dioxide, 7.5-8.5 parts of glass powder, 9-10 parts of talcum powder, 6-7 parts of silane coupling agent, 5-6 parts of emulsifier, 0.4-0.5 part of defoaming agent, 0.6-0.7 part of flatting agent and 180 parts of 145-plus deionized water;
the modified organic silicon resin is prepared by the following method:
sequentially adding trifluoropropylmethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane and gamma-aminopropyltriethoxysilane into a three-neck flask, heating, stirring, refluxing, condensing, heating to the temperature of 112-117 ℃, adding tetramethylammonium hydroxide, reacting for 6-7h, heating to the temperature of 132-138 ℃, reacting for 25-30min, slowly adding maleic anhydride at the temperature of 70-72 ℃, and continuing to react for 1h to obtain the modified organic silicon resin;
wherein the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the octamethylcyclotetrasiloxane to the tetramethyltetravinylcyclotetrasiloxane to the gamma-aminopropyltriethoxysilane to the maleic anhydride is 2:1:1:0.5: 0.8; the adding amount of the tetramethylammonium hydroxide is 1.2 percent of the mass of the system;
the modified titanium dioxide is prepared by the following method;
weighing 2mL of N, N-dimethylformamide and 56mL of deionized water, mixing, magnetically stirring at normal temperature for 15min, adding 1.8g of titanium dioxide powder, continuously magnetically stirring at normal temperature for 30min, transferring the mixed solution into a hydrothermal reaction kettle, reacting at 150 ℃ for 20h, fully cooling, washing the product with alcohol and water, drying, and grinding to obtain the modified titanium dioxide.
2. The preparation method of the heat-resistant waterproof wallpaper is characterized by comprising the following steps:
first step, preparation of base paper
Mixing and pulping the anion fibers, the bamboo fibers and the PFT fibers according to the mass ratio of 6:3:1, and making the wallpaper according to the wallpaper making process, wherein the making amount is 90-100g/m2Obtaining base paper;
step two, preparing the heat-resistant waterproof coating:
(1) uniformly mixing the modified organic silicon resin and the emulsifier, and dropwise adding deionized water into the mixture to form uniform emulsion;
(2) mixing modified titanium dioxide, aluminum oxide, silicon dioxide, glass powder and talcum powder, and then placing the mixture into a ball mill for ball milling for 45-50 min;
(3) uniformly mixing the emulsion and the silane coupling agent by using a high-speed dispersion machine, adding the ground filler, performing ultrasonic treatment for 20-24min, finally adding a defoaming agent and a leveling agent, and uniformly mixing to obtain the heat-resistant waterproof coating;
third step, coating
And coating the prepared heat-resistant waterproof coating on the surface of base paper by using a coater, naturally drying for 10-12min, then drying in an oven at 105 ℃ for 5-7min, and naturally cooling to obtain the heat-resistant waterproof wallpaper.
3. The process for producing a heat-resistant and waterproof wallpaper according to claim 2, wherein the coating amount of the heat-resistant and waterproof coating in the third step is 90 to 110g/m2。
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