CN113696573B - Toughened home decoration base film and preparation method thereof - Google Patents
Toughened home decoration base film and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B95/00—Fittings for furniture
- A47B95/04—Keyplates; Ornaments or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
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- C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/695—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon
- C08G63/6954—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon derived from polxycarboxylic acids and polyhydroxy compounds
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- B32B2307/306—Resistant to heat
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- B32B2451/00—Decorative or ornamental articles
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- B32B2479/00—Furniture
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Abstract
The invention discloses a preparation method of a toughened home-use base film, which comprises the following steps: s1: weighing a certain amount of monovinyl cage polysilsesquioxane, a compound (o-oxo-naphthalenone derivative) with a structural formula I and an initiator, dissolving in a solvent, introducing 1, 3-butadiene, and reacting to obtain a copolymerization product; s2: uniformly mixing a copolymerization product, a dihydric alcohol mixture, dibenzoxazole fluorescent whitening powder and modified nano filler, dropwise adding a mixed solution of terephthalic acid and an auxiliary agent for reaction, and carrying out blending extrusion and granulation to obtain a high polymer slice with an interpenetrating/semi-interpenetrating network structure; s3: and (3) taking the high polymer slice as a surface functional film layer raw material, and taking the PET slice as a substrate film layer material, and carrying out film drawing together by adopting a film drawing process to obtain the toughened home decoration substrate film. The home decoration film not only has the functions of toughening and brightening, but also has the functions of high temperature resistance, wear resistance and self-healing of microcracks, and prolongs the service life of the home decoration film.
Description
Technical Field
The invention relates to the technical field of home decoration building materials, in particular to a toughened home decoration base film and a preparation method thereof.
Background
It is well known that the process of home decoration and furniture involves the use of a large number of wood products, which are often painted on their surfaces in various types of paints on the market. The use of paint, both in the production of wooden furniture and in the use of finished products, may present a risk of volatile VOC-like gas emissions.
In order to meet the good pursuit of people on ideal household life, the harm of harmful gas to the health of people is reduced; at present, the surface treatment is mainly carried out by replacing water paint, coating diatom ooze or decorating film, so that the selection of wooden furniture or decorating materials is more environment-friendly, safer and healthier. Performance studies on household films are receiving attention.
Disclosure of Invention
In view of the defects of the prior art, the invention provides the toughened home decoration base film and the preparation method thereof, which not only solve the problems of low toughness and low brightness of the existing home decoration film, but also have the functions of high temperature resistance, wear resistance and self-healing of microcracks, and prolong the service life of the home decoration film.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method for preparing a toughened house-hold base film, comprising the following steps:
s1: weighing 90-120 parts of monovinyl cage polysilsesquioxane, 30-50 parts of compound monomer with structural formula I and 0.5-1.5 parts of initiator according to parts by weight, dissolving in 100 parts of solvent, setting the reaction temperature to be 120-150 ℃, setting the reaction pressure to be 0.15-0.35 MPa, slowly introducing 20-50 parts of 1, 3-butadiene, reacting while stirring, and reacting for 60-180 min to obtain a copolymerization product;
wherein R1 and R2 are each independently selected from H, methyl, ethyl or methoxy; cage polysilsesquioxane, also known as POSS, of the general formula (RSiO 3/2 ) n Wherein R is a group to which eight top angle Si atoms are attached. The copolymerization product is obtained by polymerization of a compound (o-oxo-naphthalenone derivative) of the structural formula I, 1, 3-butadiene and a monovinyl cage-type polysilsesquioxane monomer, and plays an effective role in toughening, and the reason is analyzed, on one hand, the molecular structural characteristics of the copolymerization product and on the other hand, the cage-type polysilsesquioxane is obtainedThe unique cage structure characteristic of alkane. In addition, the bonding force between the substrate film layer and the surface functional film layer is further improved through the introduced o-oxynaphthone structural unit, so that the micro-crack self-polymerization function is realized.
The monovinyl cage polysilsesquioxane provided by the invention is characterized in that the group connected with 1 vertex angle Si atom is vinyl, and the groups connected with the rest 7 vertex angle Si atoms are methyl. The preparation method comprises the following steps: hydrolyzing 28 parts of methyltrimethoxysilane in an aqueous solution of acetone with the mass concentration of 30% to prepare a cage polysilsesquioxane intermediate, and then adding 5 parts of triethylamine solution of vinyl trimethoxysilane with the mass concentration of 20% to perform a ring closure reaction to obtain the monovinyl cage polysilsesquioxane.
S2: weighing 50-80 parts of the copolymerization product, 35-55 parts of dihydric alcohol mixture, 1.5-3.5 parts of dibenzoxazole fluorescent whitening powder and 5-12 parts of modified nano filler, uniformly stirring and mixing, slowly dropwise adding a mixed solution of 18-25 parts of terephthalic acid and 1-2.5 parts of auxiliary agent at 205-235 ℃, continuously reacting for 2-3 hours after the dropwise addition, adding a double-screw extruder for blending extrusion and granulation, and obtaining a high polymer slice with an interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and the modified PET resin; the extrusion temperature of the double-screw extruder is 280 ℃; according to the invention, the preparation process of the step S2 is utilized to obtain the high polymer slice with the interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and the modified PET resin, and the high polymer structure enables the copolymerization product and the molecular structure chain segments of the modified PET resin to be mutually entangled in a physical way, so that the wear resistance and heat resistance of the surface functional film layer are further improved, and the service life of the home decoration film is prolonged. The addition of the dibenzoxazole fluorescent whitening powder plays a role of a film brightening agent; the modified white nano filler can be added to cooperate with the bisbenzoxazole fluorescent whitening powder to further lighten the film layer, further increase the high temperature resistance and the wear resistance of the surface functional film layer and prevent the performance of the film layer from being reduced at high temperature.
S3: and (3) taking the high polymer slice as a surface functional film raw material, taking the high polymer slice and an unmodified PET slice as a substrate film raw material, and carrying out film drawing together by adopting a film drawing process to obtain the toughening and brightening film for home decoration. When the slice is longitudinally stretched, the slice is preheated to 86 ℃, and stretched for about 3 times along the extending direction of the slice plane at the temperature, so that the slice is oriented, and the crystallinity can be improved to reach a higher temperature: the transverse stretching preheating temperature is 98 ℃, the stretching temperature is 110 ℃, the stretching ratio is 2.5, and the heat setting temperature is 230 ℃. The unmodified PET slice is selected from resin slices with the intrinsic viscosity of 0.65-0.75 dL/g, the melting point of 252-262 ℃ and the carboxyl end content of less than or equal to 50 mol/t. The invention conception of the toughening brightness enhancement film for home decoration is that the polymer slice with an interpenetrating/semi-interpenetrating network structure is compounded with the unmodified PET slice, thereby taking into account the economical efficiency and performance modification requirements of the film for home decoration.
Preferably, the compound of formula I is:
the preparation method of the compound with the structural formula I comprises the following steps: 81 parts by weight of 3-allyl-2-hydroxybenzaldehyde, 65 parts by weight of acetic anhydride and 3 parts by weight of anhydrous potassium acetate are placed in a three-neck flask, the temperature is raised to 150-160 ℃, acetic acid is distilled off after the reaction starts, acetic anhydride with the same mass is dropwise added, after the reaction is finished, the mixture is naturally cooled to 80 ℃, and the compound with the structural formula I is obtained after hot water washing and methanol recrystallization. According to the invention, the o-oxynaphthone structural unit is introduced into the surface functional film layer, and can be subjected to crosslinking and curing reaction under the illumination with the wavelength of more than 300nm to form a tightly crosslinked three-dimensional network structure, so that the stability of the whole surface functional film layer is further improved, the whole surface functional film layer is not easily damaged by external force, and the self-healing effect of microcracks can be realized under the condition that microcracks appear on the surface functional film layer by the illumination with the wavelength of more than 300 nm.
Preferably, the glycol mixture consists of ethylene glycol and perfluoro-cage polysilsesquioxane diol.
Preferably, the perfluoro-cage polysilsesquioxane diol consists of a vinyl perfluoro-cageThe polysilsesquioxane is obtained by reacting the polysilsesquioxane with alkene diol. More preferably, the perfluoro-cage polysilsesquioxane diol is prepared by the following method: hydrolyzing certain parts by weight of perfluoro-trimethoxy silane in an aqueous solution of acetone with the mass concentration of 30-50% to obtain a cage-type polysilsesquioxane intermediate, and then adding a triethylamine solution of vinyl trimethoxy silane with the mass concentration of 20-40%, wherein the molar ratio of the vinyl trimethoxy silane to the cage-type polysilsesquioxane intermediate is 1:1 to 1.1, carrying out a ring closure reaction to obtain vinyl perfluoro-cage polysilsesquioxane; adding the vinyl perfluoro-cage polysilsesquioxane and an initiator into a mixed solution compounded by alkene glycol and ethanol, wherein the molar ratio of the vinyl perfluoro-cage polysilsesquioxane to the alkene glycol is 1:1 to 1.05, under the action of an initiator, vinyl perfluoro-cage polysilsesquioxane reacts with alkene diol to obtain perfluoro-cage polysilsesquioxane diol. The initiator can be at least one of benzoyl peroxide, lauroyl peroxide, potassium persulfate and sodium persulfate, and the addition amount of the initiator accounts for 0.1-0.6% of the weight of vinyl perfluoro-cage polysilsesquioxane and alkene glycol monomers. Cage polysilsesquioxane, also known as POSS, of the general formula (RSiO 3/2 ) n Wherein R is a group to which eight top angle Si atoms are attached. In the invention, the cage-type polysilsesquioxane intermediate, namely seven vertex angles are connected with perfluorinated groups, and one vertex angle is not closed and is respectively three hydroxyl groups; further, the remaining vertex angle of the cage-type polysilsesquioxane is obtained by reacting with vinyl trimethoxy silane, the remaining vertex angle of the cage-type polysilsesquioxane contains active functional group vinyl, and then the target product is obtained by carrying out addition reaction with olefinic double bonds carried by olefinic diols. Through grafting perfluoro group and cage polysilsesquioxane group, the surface of the membrane for home decoration has excellent self-cleaning, high temperature resistance, wear resistance and other performances due to the strong stain resistance of the perfluoro group and the spherical nanoparticle characteristic of the cage polysilsesquioxane group.
Preferably, the alkylene glycol is at least one of 3- (allyloxy) -1, 2-propanediol, 1, 4-butene diol, 3-butene-1, 2-diol, or 1, 2-ethylene glycol.
Preferably, the modified nano-filler is polyethylene glycol coated nano-inorganic filler, and the modification method comprises the following steps: dissolving polyethylene glycol in water to obtain an aqueous solution of polyethylene glycol, uniformly dispersing the nano inorganic filler in the aqueous solution of polyethylene glycol, and evaporating the water in the dispersion to dryness to obtain polyethylene glycol coated nano inorganic filler powder. The nano inorganic filler is at least one of white nano titanium oxide, nano silicon oxide, nano aluminum oxide or nano tin oxide.
Preferably, the initiator is at least one of ammonium persulfate, potassium persulfate and sodium persulfate.
Preferably, the auxiliary agent is at least one of an accelerator, a nucleating agent and a leveling agent.
In another aspect, the invention provides a toughened home decoration base film, which is prepared by the preparation method.
The invention has the beneficial effects that:
compared with the existing home decoration film, the toughening home decoration base film has the functions of toughening and brightening, has the functions of high temperature resistance, wear resistance and microcrack self-healing, and prolongs the service life of the home decoration film.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Example 1
The preparation method of the toughened household base film comprises the following steps:
s1: weighing 90 parts of monovinyl cage polysilsesquioxane, 30 parts of a compound monomer with a structural formula I and 0.5 part of ammonium persulfate according to parts by weight, dissolving in 100 parts of toluene, setting the reaction temperature to 120 ℃, setting the reaction pressure to 0.35MPa, slowly introducing 20 parts of 1, 3-butadiene, reacting while stirring, and obtaining a copolymerization product after reacting for 60 min;
structural formula I;
s2: weighing 50 parts of the copolymerization product, 35 parts of a dihydric alcohol mixture, 1.5 parts of dibenzoxazole fluorescent whitening powder and 5 parts of modified nano filler, stirring and mixing uniformly, slowly dropwise adding a mixed solution of 18 parts of terephthalic acid, 1 part of accelerator zinc acetate and 1.5 parts of nucleating agent sodium perfluorobutyrate at 215 ℃, continuously reacting for 3 hours after the dropwise adding is finished, adding a double-screw extruder, blending, extruding and granulating to obtain a high polymer slice with an interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and modified PET resin; the extrusion temperature of the double-screw extruder is 280 ℃; the dihydric alcohol mixture comprises the following components in percentage by mass: 1 and perfluoro-cage polysilsesquioxane diol;
s3: and (3) taking the high polymer slice as a surface functional film raw material, taking the high polymer slice and an unmodified PET slice as a substrate film raw material, and carrying out film drawing together by adopting a film drawing process to obtain the toughening and brightening film for home decoration. When the slice is longitudinally stretched, the slice is preheated to 86 ℃, and stretched for about 3 times along the extending direction of the slice plane at the temperature, so that the slice is oriented, and the crystallinity can be improved to reach a higher temperature: the transverse stretching preheating temperature is 98 ℃, the stretching temperature is 110 ℃, the stretching ratio is 2.5, and the heat setting temperature is 230 ℃. The unmodified PET slice is selected from resin slices with the intrinsic viscosity of 0.7dL/g, the melting point of 258 ℃ and the carboxyl end group content of less than or equal to 50 mol/t.
The preparation method of the monovinyl cage polysilsesquioxane comprises the following steps: hydrolyzing 28 parts of methyltrimethoxysilane in an aqueous solution of acetone with the mass concentration of 30% to prepare a cage polysilsesquioxane intermediate, and then adding 5 parts of triethylamine solution of vinyl trimethoxysilane with the mass concentration of 20% to perform a ring closure reaction to obtain the monovinyl cage polysilsesquioxane.
The preparation method of the compound with the structural formula I comprises the following steps: 81 parts by weight of 3-allyl-2-hydroxybenzaldehyde, 65 parts by weight of acetic anhydride and 3 parts by weight of anhydrous potassium acetate are placed in a three-neck flask, the temperature is raised to 150 ℃, acetic acid is distilled off after the reaction starts, acetic anhydride with the same mass is dropwise added, after the reaction is finished, the mixture is naturally cooled to 80 ℃, and the compound with the structural formula I is obtained after hot water washing and methanol recrystallization.
The perfluoro-cage polysilsesquioxane diol is prepared by the following method: hydrolyzing certain parts by weight of perfluoro-trimethoxy silane in an aqueous solution of acetone with the mass concentration of 30% to obtain a cage-type polysilsesquioxane intermediate, and then adding a triethylamine solution of vinyl trimethoxy silane with the mass concentration of 25%, wherein the molar ratio of the vinyl trimethoxy silane to the cage-type polysilsesquioxane intermediate is 1:105, performing ring closure reaction to obtain vinyl perfluoro-cage polysilsesquioxane; adding the vinyl perfluoro-cage polysilsesquioxane and an initiator into a mixed solution compounded by 1, 4-butylene glycol and ethanol, wherein the molar ratio of the vinyl perfluoro-cage polysilsesquioxane to the ethylene glycol is 1:1.02, under the action of an initiator, reacting vinyl perfluoro-cage polysilsesquioxane with 1, 4-butylene glycol to obtain perfluoro-cage polysilsesquioxane glycol. The initiator can be benzoyl peroxide, and the addition amount of the initiator accounts for 0.15 percent of the weight of the vinyl perfluoro-cage polysilsesquioxane and the 1, 4-butylene glycol monomer.
The modified nano filler is polyethylene glycol coated nano titanium oxide, and the modification method comprises the following steps: dissolving polyethylene glycol in water to obtain polyethylene glycol aqueous solution, uniformly dispersing nano titanium oxide in the polyethylene glycol aqueous solution, and evaporating the water in the dispersion to dryness to obtain polyethylene glycol coated nano titanium oxide powder.
Example 2
The preparation method of the toughened household base film comprises the following steps:
s1: weighing 100 parts of monovinyl cage polysilsesquioxane, 40 parts of a compound monomer with a structural formula I and 1 part of ammonium persulfate according to parts by weight, dissolving in 100 parts of toluene, setting the reaction temperature to 130 ℃, setting the reaction pressure to 0.25MPa, slowly introducing 40 parts of 1, 3-butadiene, reacting while stirring, and reacting for 120min to obtain a copolymerization product;
structural formula I;
s2: weighing 70 parts of the copolymerization product, 45 parts of the dihydric alcohol mixture, 2.5 parts of the dibenzoxazole fluorescent whitening powder and 8 parts of the modified nano filler, stirring and mixing uniformly, slowly dropwise adding a mixed solution of 20 parts of terephthalic acid, 1.5 parts of accelerator zinc acetate and 1 part of nucleating agent sodium perfluorobutyrate at 235 ℃, continuously reacting for 3 hours after the dropwise addition, adding a double-screw extruder, blending, extruding and granulating to obtain a high polymer slice with an interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and the modified PET resin; the extrusion temperature of the double-screw extruder is 280 ℃; the dihydric alcohol mixture comprises the following components in percentage by mass: 1 and perfluoro-cage polysilsesquioxane diol;
s3: and (3) taking the high polymer slice as a surface functional film raw material, taking the high polymer slice and an unmodified PET slice as a substrate film raw material, and carrying out film drawing together by adopting a film drawing process to obtain the toughening and brightening film for home decoration. When the slice is longitudinally stretched, the slice is preheated to 86 ℃, and stretched for about 3 times along the extending direction of the slice plane at the temperature, so that the slice is oriented, and the crystallinity can be improved to reach a higher temperature: the transverse stretching preheating temperature is 98 ℃, the stretching temperature is 110 ℃, the stretching ratio is 2.5, and the heat setting temperature is 230 ℃.
The monovinyl cage polysilsesquioxane, the compound of structural formula I, the perfluoro cage polysilsesquioxane diol, the modified nanofiller and the PET chips of this example are the same as those of example 1.
Example 3
The preparation method of the toughening brightness enhancement film for home decoration comprises the following steps:
s1: weighing 120 parts of monovinyl cage polysilsesquioxane, 50 parts of a compound monomer with a structural formula I and 1.5 parts of ammonium persulfate according to parts by weight, dissolving in 100 parts of toluene, setting the reaction temperature to 150 ℃, setting the reaction pressure to 0.15MPa, slowly introducing 50 parts of 1, 3-butadiene, reacting while stirring, and reacting for 180min to obtain a copolymerization product;
structural formula I;
s2: weighing 80 parts of the copolymerization product, 55 parts of dihydric alcohol mixture, 3.5 parts of dibenzoxazole fluorescent whitening powder and 12 parts of modified nano filler, stirring and mixing uniformly, slowly dropwise adding a mixed solution of 25 parts of terephthalic acid, 1 part of accelerator zinc acetate and 1.5 parts of nucleating agent sodium perfluorobutyrate at 235 ℃, continuously reacting for 2 hours after the dropwise adding is finished, adding a double-screw extruder, blending, extruding and granulating to obtain a high polymer slice with an interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and modified PET resin; the extrusion temperature of the double-screw extruder is 280 ℃; the dihydric alcohol mixture comprises the following components in percentage by mass: 1 and perfluoro-cage polysilsesquioxane diol;
s3: and (3) taking the high polymer slice as a surface functional film raw material, taking the high polymer slice and an unmodified PET slice as a substrate film raw material, and carrying out film drawing together by adopting a film drawing process to obtain the toughening and brightening film for home decoration. When the slice is longitudinally stretched, the slice is preheated to 86 ℃, and stretched for about 3 times along the extending direction of the slice plane at the temperature, so that the slice is oriented, and the crystallinity can be improved to reach a higher temperature: the transverse stretching preheating temperature is 98 ℃, the stretching temperature is 110 ℃, the stretching ratio is 2.5, and the heat setting temperature is 230 ℃.
The monovinyl cage polysilsesquioxane, the compound of structural formula I, the perfluoro cage polysilsesquioxane diol and the modified nanofiller of this example are the same as in example 1.
Comparative example 1
The steps of the preparation method of the toughening home decoration base film of the comparative example are basically the same as those of the example 1, and the difference is that in the preparation method of the toughening brightness enhancement film for home decoration of the comparative example, monovinyl cage type polysilsesquioxane is not added in the raw material of the copolymerization product of the step S1.
Comparative example 2
The steps of the preparation method of the toughening home decoration base film of the comparative example are basically the same as those of the embodiment 1, except that in the preparation method of the toughening brightness enhancement film for home decoration of the comparative example, the compound of the structural formula I is not added into the raw material of the copolymerization product of the step S1.
Comparative example 3
The preparation method of the toughening home decoration base film of the comparative example has the steps basically the same as those of the example 1, and is different in that in the preparation method of the toughening brightness enhancement film for home decoration of the comparative example, in the step S2, the dihydric alcohol is only glycol, and no perfluoro-cage polysilsesquioxane glycol is added.
Comparative example 4
The steps of the preparation method of the toughening home decoration base film of the comparative example are basically the same as those of the example 1, except that in the preparation method of the toughening brightness enhancement film for home decoration of the comparative example, no modified nano filler is added to the raw materials of the high polymer slice in the step S2.
Performance tests were performed on a toughened home decoration base film prepared in examples 1 to 3 and comparative examples 1 to 4, and the performance results are shown in tables 1 and 2:
brightness enhancement performance test: and attaching the toughened home decoration base film to the wood board, testing the average brightness of the surface of the wood board by using a reflectivity tester, and taking the average brightness enhancement rate of the surface of the wood board before and after film attachment as an investigation index of brightness enhancement performance.
Abrasion resistance test: according to GB/T1768-1979, after a grinding wheel is polished for 200 circles under a weight of 250g, the weight loss of the film layer is tested, so that the wear resistance of the film layer is judged.
Easy cleaning performance test: and (3) attaching the toughened home decoration base film to a wood board, immersing the wood board in red dragon fruit juice, continuously immersing for 168 hours, repeatedly cleaning the wood board with warm water at 25 ℃ for 3 times, and observing whether fruit juice pigment remains on the surface of the home decoration film.
Self-healing performance test: micro-crack is formed on the surface of the film layer in a scribing mode, microscopic observation shows that the film layer is placed under the illumination with the wavelength of 450nm, self-healing operation is carried out, and healing conditions of the micro-crack are observed through the microscopic observation.
TABLE 1
TABLE 2
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (6)
1. The preparation method of the toughened home-use base film is characterized by comprising the following steps of:
s1: weighing 90-120 parts of monovinyl cage polysilsesquioxane, 30-50 parts of compound monomer with structural formula I and 0.5-1.5 parts of initiator according to parts by weight, dissolving in 100 parts of solvent, setting the reaction temperature to be 120-150 ℃, setting the reaction pressure to be 0.15-0.35 MPa, slowly introducing 20-50 parts of 1, 3-butadiene, reacting while stirring, and reacting for 60-180 min to obtain a copolymerization product;
wherein R is 1 And R is 2 Each independently selected from H, methyl, ethyl, or methoxy;
s2: weighing 50-80 parts of the copolymerization product, 35-55 parts of dihydric alcohol mixture, 1.5-3.5 parts of dibenzoxazole fluorescent whitening powder and 5-12 parts of modified nano filler, uniformly stirring and mixing, slowly dropwise adding a mixed solution of 18-25 parts of terephthalic acid and 1-2.5 parts of auxiliary agent at 205-235 ℃, continuously reacting for 2-3 hours after the dropwise addition, adding a double-screw extruder for blending extrusion and granulation, and obtaining a high polymer slice with an interpenetrating/semi-interpenetrating network structure formed by the copolymerization product and the modified PET resin;
s3: the polymer slice is used as a surface functional film raw material, and the polymer slice and an unmodified PET slice are used as a substrate film material, and a film drawing process is adopted to carry out film drawing together, so that the toughening and brightening film for home decoration is obtained;
the dihydric alcohol mixture consists of ethylene glycol and perfluoro-cage polysilsesquioxane diol; the perfluoro-cage polysilsesquioxane diol is obtained by reacting vinyl perfluoro-cage polysilsesquioxane with alkene diol; the alkene diol is at least one of 3- (allyloxy) -1, 2-propanediol, 1, 4-butylene diol, 3-butylene-1, 2-diol or 1, 2-ethylene diol.
2. The method of making a toughened house hold wear base film as claimed in claim 1 wherein said compound of structural formula I is:
3. the method for preparing the toughened home decoration base film as claimed in claim 1, wherein the modified nano filler is polyethylene glycol coated nano inorganic filler, and the modification method comprises the following steps: dissolving polyethylene glycol in water to obtain an aqueous solution of polyethylene glycol, uniformly dispersing the nano inorganic filler in the aqueous solution of polyethylene glycol, and evaporating the water in the dispersion to dryness to obtain polyethylene glycol coated nano inorganic filler powder.
4. The method for producing a toughened house-hold-dress base film as claimed in claim 1, wherein said initiator is at least one of ammonium persulfate, potassium persulfate, sodium persulfate.
5. The method for preparing a toughened home decoration base film according to claim 1, wherein the auxiliary agent is at least one of an accelerator, a nucleating agent and a leveling agent.
6. A toughened home decoration base film prepared by the preparation method of any one of claims 1 to 5.
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