CN116102878A - High-strength and high-toughness plastic film and preparation method thereof - Google Patents
High-strength and high-toughness plastic film and preparation method thereof Download PDFInfo
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- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
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Abstract
The invention discloses a high-strength and high-toughness plastic film and a preparation method thereof, wherein modified nylon, reinforced resin and benzoyl peroxide are added into a double-screw extruder and are subjected to melt extrusion to prepare composite particles, the composite particles are extruded and molded, and then are stretched into a film by a biaxial stretching tester, so that the high-strength and high-toughness plastic film is prepared, an organic silicon chain segment is contained in a modified nylon molecular chain, the prepared film has a certain waterproof effect, meanwhile, the composite molecular structure is of a dendritic structure, the polymerization shrinkage rate of the material can be reduced, the intermolecular distance can not be reduced, the toughness of the film is further ensured, the side chain of the reinforced resin contains a phenylboronic acid structure, an N-B coordinate bond can be formed between a nitrogen donor at the ortho position and a boric acid group, and the nitrogen coordinate boron-oxygen six-ring is formed through crosslinking, and then a benzene layer is formed on the surface of the film, so that the benzene has a hydrophobic effect, the waterproof effect of the prepared film is further improved, and the modified nylon and the reinforced resin are subjected to melt blending, so that the mechanical property of the film is further improved.
Description
Technical Field
The invention relates to the technical field of plastic film preparation, in particular to a high-strength and high-toughness plastic film and a preparation method thereof.
Background
The polymer material is the basis of human production and living in the present age, has an indispensable position, and forms three main supports for the development of modern science and technology together with information and energy. The number and variety of the polymer materials in one country are one of important marks which can directly measure the scientific and technical, the living standard of people and the economic development level. With the progress and development of the age, polymer materials have been rapidly developed, especially in the 20 th century. Nylon is used as semi-crystalline thermoplastic engineering plastic, which has a plurality of excellent characteristics such as various types, light weight, self-lubricating property, high strength, good chemical stability, excellent wear resistance and the like, so that the nylon is widely applied to industries such as electronic appliances, medical appliances, automobile industry and the like, a biaxially oriented nylon film is first invented and produced by You Niji corporation in the year of 20 century in Japan, and is widely focused by people from the first preparation success, chinese patent CN111875947a discloses a modified polyketone resin, a preparation method thereof, a nylon composite film and a preparation method thereof, although the mechanical strength and the hydrophobicity of nylon materials are improved to a certain extent, the problem that the film cannot be prevented from absorbing water is solved, and Chinese patent CN103012916a discloses a packaging film containing nylon PA12, which greatly improves the barrier effect of the film, but absorbs water after a period of use, so that water permeates into products and influences normal use of the products.
Disclosure of Invention
The invention aims to provide a high-strength and high-toughness plastic film and a preparation method thereof, and solves the problems that the nylon plastic film in the prior art has common mechanical strength and is easy to absorb water.
The aim of the invention can be achieved by the following technical scheme:
the preparation method of the high-strength and high-toughness plastic film specifically comprises the following steps:
adding modified nylon, reinforced resin and benzoyl peroxide into a double-screw extruder, carrying out melt extrusion under the conditions that the rotating speed is 300-400 r/min, the temperature of a first region is 200 ℃, the temperature of a second region is 245 ℃, the temperature of a third region is 255 ℃, the temperature of a fourth region is 250 ℃, the temperature of a fifth region is 245 ℃, the temperature of a sixth region is 235 ℃, the temperature of a seventh region is 250 ℃, and the temperature of a die head is 255 ℃, so as to obtain composite particles, adding the composite particles into a three-layer coextrusion casting machine, carrying out extrusion molding under the conditions that the casting temperature is 235/240/240/240 ℃, the temperature of a chilling roller is 25 ℃ and the rotating speed is 50 r/min, and then stretching into a film by using a biaxial stretching tester so as to obtain the high-strength and high-toughness plastic film.
Further, the mass ratio of the modified nylon to the reinforced resin to the benzoyl peroxide is 20:10:1.
Further, the modified nylon is prepared by the following steps:
step A1: adding 3-aminopropyl methyl dimethoxy silane and dimethyl dichloro silane into deionized water, stirring at the rotation speed of 200-300 r/min and the temperature of 25-30 ℃, adding tetrahydrofuran and concentrated sulfuric acid, heating to 55-65 ℃, preserving heat for 5-10 min, adding 1, 3-tetramethyl disiloxane, and reacting for 3-5h to obtain an intermediate 1;
step A2: mixing pentaerythritol tetraacrylate, an intermediate 1 and dimethylbenzene, stirring and adding chloroplatinic acid at the rotation speed of 200-300 r/min and the temperature of 50-60 ℃, heating to 60-65 ℃, reacting for 6-8 hours, adding propenol, continuing to react for 2-3 hours to prepare hyperbranched alcohol, uniformly mixing the hyperbranched alcohol, maleic anhydride and DMF, stirring and adding triethylamine, acetic anhydride and nickel acetate at the rotation speed of 150-200 r/min and the temperature of 60-70 ℃, reacting for 3-5 hours, distilling off DMF, adding deionized water, filtering to remove filtrate, and preparing the modified hyperbranched alcohol;
step A3: uniformly mixing modified hyperbranched alcohol, 2, 4-toluene diisocyanate and xylene, reacting for 3-5 hours at the rotation speed of 150-200 r/min and the temperature of 80-90 ℃ to obtain hyperbranched monomer, uniformly mixing hyperbranched monomer, caprolactam and xylene, stirring and adding sodium hydroxide at the rotation speed of 200-300 r/min and the temperature of 130-135 ℃, heating to 170-175 ℃, reacting for 1-1.5 hours, removing xylene, adding a substrate into deionized water, boiling, preserving heat for 10-12 hours, filtering to remove filtrate, and drying to obtain the modified nylon.
Further, the dosage ratio of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane, the deionized water and the 1, 3-tetramethyl disiloxane in the step A1 is 2mmo l:3mmo l:3mL:4mmo l, and the dosage of the concentrated sulfuric acid is 8-10% of the mass of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane and the 1, 3-tetramethyl disiloxane.
Further, the molar ratio of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol in the step A2 is 1:4:4, the concentration of chloroplatinic acid in the mixture of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol is 10-12ppm, and the dosage ratio of amino group, maleic anhydride, triethylamine, acetic anhydride and nickel acetate on hyperbranched alcohol is 50mmo l:50mmo l:5mL:13mL:4g.
Further, the molar ratio of the alcoholic hydroxyl group on the modified hyperbranched alcohol to the isocyanate group on the 2, 4-toluene diisocyanate in the step A3 is 1:2, and the mass ratio of the hyperbranched monomer, the caprolactam and the sodium hydroxide is 3-5:100:8-10.
Further, the reinforced resin is prepared by the following steps:
step B1: mixing sodium dodecyl sulfate and deionized water, stirring at a rotation speed of 200-300 r/min for 30-40 min, adding cinnamic acid and styrene, heating to 75-80 ℃, adding potassium persulfate, reacting for 1-3h, heating to 85-90 ℃, continuing to react for 1-1.5h, cooling to room temperature, adding aluminum sulfate, stirring for 5-10 min, filtering to remove filtrate, adding a substrate into deionized water, preserving heat for 5-10 min at 80-85 ℃, filtering, and drying to obtain modified polystyrene;
step B2: dissolving modified polystyrene in dimethylbenzene, adding 2-aminophenylboric acid and 1-hydroxybenzotriazole, reacting for 3-5 hours at the rotation speed of 200-300 r/min and the temperature of 40-50 ℃, distilling to remove dimethylbenzene, adding a substrate into deionized water, filtering to remove filtrate, and drying the substrate to obtain the reinforced resin.
Further, the dosage ratio of sodium dodecyl sulfate, deionized water, cinnamic acid, styrene, potassium persulfate and aluminum sulfate in step B1 is 0.8g:600mL:20g:200mL:3.5g:1.6g.
Further, the molar ratio of carboxyl, 2-aminophenylboronic acid and 1-hydroxybenzotriazole on the modified polystyrene in the step B2 is 1:1:1.2.
The invention has the beneficial effects that: the high-strength and toughness plastic film is prepared by melt extrusion of modified nylon and reinforced resin, biaxial stretching, hydrolysis of 3-aminopropyl methyldimethoxysilane and dimethyl dichlorosilane as raw materials, ring closure after reaction of maleic anhydride ring opening and hyperbranched alcohol side chain, preparation of modified hyperbranched alcohol, reaction of modified hyperbranched alcohol and 2, 4-toluene diisocyanate, reaction of hydroxyl of alcohol on the modified hyperbranched alcohol and isocyanate group on one side of 2, 4-toluene diisocyanate under the action of chloroplatinic acid, reaction of S i-H bond on the intermediate 1 and double bond on pentaerythritol tetraacrylate to form a hyperbranched structure of S i-H bond, addition of propenol, reaction of double bond on the propenol and S i-H bond to form hyperbranched alcohol, reaction of hyperbranched alcohol and maleic anhydride, preparation of modified hyperbranched alcohol, reaction of modified hyperbranched alcohol and 2, 4-toluene diisocyanate, preparation of hyperbranched alcohol hydroxyl on one side of modified hyperbranched alcohol and isocyanate group on one side of 2, reaction of hyperbranched alcohol and 2, expansion of hydroxyl of triazole with 2-toluene diisocyanate, polymerization of modified styrene-modified resin under the reinforced polystyrene side chain, and reinforcement of modified styrene resin under the action of reinforcing resin, and the following the steps of the modified polystyrene resin, under the action of benzoyl peroxide, double bonds on maleimido on modified nylon are grafted with molecular chains of reinforced resin, and the modified nylon molecular chains contain organic silicon chain segments, so that the prepared film has a certain waterproof effect, meanwhile, the composite molecular structure is of a dendritic structure, the polymerization shrinkage rate of the material can be reduced, the intermolecular distance can not be reduced, the toughness of the film is further ensured, the reinforced resin side chains contain phenylboronic acid structures, N-B coordination bonds can be formed between orthotopic nitrogen donors and boric acid groups, nitrogen coordination boron-oxygen hexarings are formed by crosslinking, benzene layers are formed on the surface of the film, the benzene has a hydrophobic effect, the waterproof effect of the prepared film is further improved, and the modified nylon and the reinforced resin are fused and blended, so that the mechanical property of the film is further improved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation method of the high-strength and high-toughness plastic film specifically comprises the following steps:
adding modified nylon, reinforced resin and benzoyl peroxide into a double-screw extruder, carrying out melt extrusion under the conditions that the rotating speed is 300 r/min, the temperature of a first region is 200 ℃, the temperature of a second region is 245 ℃, the temperature of a third region is 255 ℃, the temperature of a fourth region is 250 ℃, the temperature of a fifth region is 245 ℃, the temperature of a sixth region is 235 ℃, the temperature of a seventh region is 250 ℃, and the temperature of a die head is 255 ℃, so as to obtain composite particles, adding the composite particles into a three-layer co-extrusion casting machine, carrying out extrusion molding under the conditions that the casting temperature is 235/240/240/240 ℃, the temperature of a chilling roller is 25 ℃ and the rotating speed is 50 r/min, and then stretching into a film with the thickness of 0.3mm by using a two-way stretching tester, thus obtaining the high-strength and high-toughness plastic film.
The mass ratio of the modified nylon to the reinforced resin to the benzoyl peroxide is 20:10:1.
The modified nylon is prepared by the following steps:
step A1: adding 3-aminopropyl methyl dimethoxy silane and dimethyl dichloro silane into deionized water, stirring for 20 min at the rotation speed of 200 r/min and the temperature of 25 ℃, adding tetrahydrofuran and concentrated sulfuric acid, heating to 55 ℃, preserving heat for 5 min, adding 1, 3-tetramethyl disiloxane, and reacting for 3h to obtain an intermediate 1;
step A2: mixing pentaerythritol tetraacrylate, an intermediate 1 and dimethylbenzene, stirring and adding chloroplatinic acid at the rotation speed of 200 r/min and the temperature of 50 ℃, heating to 60 ℃, reacting for 6 hours, adding propenol, continuing to react for 2 hours to prepare hyperbranched alcohol, uniformly mixing the hyperbranched alcohol, maleic anhydride and DMF, stirring and adding triethylamine, acetic anhydride and nickel acetate at the rotation speed of 150 r/min and the temperature of 60 ℃, reacting for 3 hours, distilling to remove DMF, adding deionized water, filtering to remove filtrate, and preparing the modified hyperbranched alcohol;
step A3: uniformly mixing modified hyperbranched alcohol, 2, 4-toluene diisocyanate and xylene, reacting for 3 hours at the rotation speed of 150 r/min and the temperature of 80 ℃, preparing hyperbranched monomer, uniformly mixing hyperbranched monomer, caprolactam and xylene, stirring and adding sodium hydroxide at the rotation speed of 200 r/min and the temperature of 130 ℃, heating to 170 ℃, reacting for 1 hour, removing xylene, adding a substrate into deionized water, boiling and preserving heat for 10 hours, filtering and removing filtrate, and drying to prepare the modified nylon.
The dosage ratio of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane, the deionized water and the 1, 3-tetramethyl disiloxane in the step A1 is 2mmo l:3mmo l:3mL:4mmo l, and the dosage of the concentrated sulfuric acid is 8% of the mass of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane and the 1, 3-tetramethyl disiloxane.
The molar ratio of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol in the step A2 is 1:4:4, the concentration of chloroplatinic acid in the mixture of pentaerythritol tetraacrylate, intermediate 1 and allyl alcohol is 10ppm, and the dosage ratio of amino group, maleic anhydride, triethylamine, acetic anhydride and nickel acetate on hyperbranched alcohol is 50mmo l:50mmo l:5mL:13mL:4g.
The molar ratio of the alcoholic hydroxyl group on the modified hyperbranched alcohol to the isocyanate group on the 2, 4-toluene diisocyanate in the step A3 is 1:2, and the mass ratio of the hyperbranched monomer, the caprolactam and the sodium hydroxide is 3:100:8.
The reinforced resin is prepared by the following steps:
step B1: mixing sodium dodecyl sulfate and deionized water, stirring for 30 min at a rotation speed of 200 r/min, adding cinnamic acid and styrene, heating to 75 ℃, adding potassium persulfate, reacting for 1h, heating to 85 ℃, continuing to react for 1h, cooling to room temperature, adding aluminum sulfate, stirring for 5 min, filtering to remove filtrate, adding a substrate into deionized water, preserving heat for 5 min at a temperature of 80 ℃, filtering and drying to obtain modified polystyrene;
step B2: dissolving modified polystyrene in dimethylbenzene, adding 2-aminobenzene boric acid and 1-hydroxybenzotriazole, reacting for 3 hours at the temperature of 40 ℃ at the rotation speed of 200 r/min, distilling to remove dimethylbenzene, adding a substrate into deionized water, filtering to remove filtrate, and drying the substrate to obtain the reinforced resin.
The dosage ratio of the sodium dodecyl sulfate, deionized water, cinnamic acid, styrene, potassium persulfate and aluminum sulfate in the step B1 is 0.8g:600mL:20g:200mL:3.5g:1.6g.
The molar ratio of carboxyl, 2-aminobenzene boric acid and 1-hydroxybenzotriazole on the modified polystyrene in the step B2 is 1:1:1.2.
Example 2
The preparation method of the high-strength and high-toughness plastic film specifically comprises the following steps:
adding modified nylon, reinforced resin and benzoyl peroxide into a double-screw extruder, carrying out melt extrusion under the conditions that the rotating speed is 300 r/min, the temperature of a first region is 200 ℃, the temperature of a second region is 245 ℃, the temperature of a third region is 255 ℃, the temperature of a fourth region is 250 ℃, the temperature of a fifth region is 245 ℃, the temperature of a sixth region is 235 ℃, the temperature of a seventh region is 250 ℃, and the temperature of a die head is 255 ℃, so as to obtain composite particles, adding the composite particles into a three-layer co-extrusion casting machine, carrying out extrusion molding under the conditions that the casting temperature is 235/240/240/240 ℃, the temperature of a chilling roller is 25 ℃ and the rotating speed is 50 r/min, and then stretching into a film with the thickness of 0.3mm by using a two-way stretching tester, thus obtaining the high-strength and high-toughness plastic film.
The mass ratio of the modified nylon to the reinforced resin to the benzoyl peroxide is 20:10:1.
The modified nylon is prepared by the following steps:
step A1: adding 3-aminopropyl methyl dimethoxy silane and dimethyl dichloro silane into deionized water, stirring for 25 min at the rotation speed of 200 r/min and the temperature of 30 ℃, adding tetrahydrofuran and concentrated sulfuric acid, heating to 60 ℃, preserving heat for 8 min, adding 1, 3-tetramethyl disiloxane, and reacting for 4h to obtain an intermediate 1;
step A2: mixing pentaerythritol tetraacrylate, an intermediate 1 and dimethylbenzene, stirring and adding chloroplatinic acid at the rotation speed of 200 r/min and the temperature of 55 ℃, heating to 65 ℃, reacting for 6-8 hours, adding propenol, continuing to react for 3 hours to prepare hyperbranched alcohol, uniformly mixing the hyperbranched alcohol, maleic anhydride and DMF, stirring and adding triethylamine, acetic anhydride and nickel acetate at the rotation speed of 180 r/min and the temperature of 65 ℃, reacting for 4 hours, distilling to remove DMF, adding deionized water, filtering to remove filtrate, and preparing the modified hyperbranched alcohol;
step A3: uniformly mixing modified hyperbranched alcohol, 2, 4-toluene diisocyanate and xylene, reacting for 4 hours at the rotation speed of 150 r/min and the temperature of 85 ℃, preparing hyperbranched monomer, uniformly mixing hyperbranched monomer, caprolactam and xylene, stirring and adding sodium hydroxide at the rotation speed of 300 r/min and the temperature of 130 ℃, heating to 175 ℃, reacting for 1.5 hours, removing xylene, adding a substrate into deionized water, boiling and preserving heat for 10 hours, filtering and removing filtrate, and drying to obtain the modified nylon.
The dosage ratio of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane, the deionized water and the 1, 3-tetramethyl disiloxane in the step A1 is 2mmo l:3mmo l:3mL:4mmo l, and the dosage of the concentrated sulfuric acid is 9% of the mass of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane and the 1, 3-tetramethyl disiloxane.
The molar ratio of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol in the step A2 is 1:4:4, the concentration of chloroplatinic acid in the mixture of pentaerythritol tetraacrylate, intermediate 1 and allyl alcohol is 11ppm, and the dosage ratio of amino group, maleic anhydride, triethylamine, acetic anhydride and nickel acetate on hyperbranched alcohol is 50mmo l:50mmo l:5mL:13mL:4g.
The molar ratio of the alcoholic hydroxyl group on the modified hyperbranched alcohol to the isocyanate group on the 2, 4-toluene diisocyanate in the step A3 is 1:2, and the mass ratio of the hyperbranched monomer, the caprolactam and the sodium hydroxide is 4:100:9.
The reinforced resin is prepared by the following steps:
step B1: mixing sodium dodecyl sulfate and deionized water, stirring at a rotation speed of 200 r/min, adding cinnamic acid and styrene, heating to 80 ℃, adding potassium persulfate, reacting for 2 hours, heating to 85 ℃, continuing to react for 1.5 hours, cooling to room temperature, adding aluminum sulfate, stirring at 8 min, filtering to remove filtrate, adding a substrate into deionized water, preserving heat at 80 ℃ for 10 min, filtering and drying to obtain modified polystyrene;
step B2: dissolving modified polystyrene in dimethylbenzene, adding 2-aminobenzene boric acid and 1-hydroxybenzotriazole, reacting for 4 hours at the temperature of 45 ℃ at the rotation speed of 200 r/min, distilling to remove dimethylbenzene, adding a substrate into deionized water, filtering to remove filtrate, and drying the substrate to obtain the reinforced resin.
The dosage ratio of the sodium dodecyl sulfate, deionized water, cinnamic acid, styrene, potassium persulfate and aluminum sulfate in the step B1 is 0.8g:600mL:20g:200mL:3.5g:1.6g.
The molar ratio of carboxyl, 2-aminobenzene boric acid and 1-hydroxybenzotriazole on the modified polystyrene in the step B2 is 1:1:1.2.
Example 3
The preparation method of the high-strength and high-toughness plastic film specifically comprises the following steps:
adding modified nylon, reinforced resin and benzoyl peroxide into a double-screw extruder, carrying out melt extrusion under the conditions that the rotating speed is 400 r/min, the temperature of a first region is 200 ℃, the temperature of a second region is 245 ℃, the temperature of a third region is 255 ℃, the temperature of a fourth region is 250 ℃, the temperature of a fifth region is 245 ℃, the temperature of a sixth region is 235 ℃, the temperature of a seventh region is 250 ℃, and the temperature of a die head is 255 ℃, so as to obtain composite particles, adding the composite particles into a three-layer co-extrusion casting machine, carrying out extrusion molding under the conditions that the casting temperature is 235/240/240/240 ℃, the temperature of a chilling roller is 25 ℃ and the rotating speed is 50 r/min, and then stretching into a film with the thickness of 0.3mm by using a two-way stretching tester, thus obtaining the high-strength and high-toughness plastic film.
The mass ratio of the modified nylon to the reinforced resin to the benzoyl peroxide is 20:10:1.
The modified nylon is prepared by the following steps:
step A1: adding 3-aminopropyl methyl dimethoxy silane and dimethyl dichloro silane into deionized water, stirring for 30 min at the rotation speed of 300 r/min and the temperature of 30 ℃, adding tetrahydrofuran and concentrated sulfuric acid, heating to 65 ℃, preserving heat for 10 min, adding 1, 3-tetramethyl disiloxane, and reacting for 5h to obtain an intermediate 1;
step A2: mixing pentaerythritol tetraacrylate, an intermediate 1 and dimethylbenzene, stirring and adding chloroplatinic acid at the rotation speed of 200-300 r/min and the temperature of 60 ℃, heating to 65 ℃, reacting for 8 hours, adding propenol, continuing to react for 3 hours to prepare hyperbranched alcohol, uniformly mixing the hyperbranched alcohol, maleic anhydride and DMF, stirring and adding triethylamine, acetic anhydride and nickel acetate at the rotation speed of 200 r/min and the temperature of 70 ℃, reacting for 5 hours, distilling away DMF, adding deionized water, filtering to remove filtrate, and preparing the modified hyperbranched alcohol;
step A3: uniformly mixing modified hyperbranched alcohol, 2, 4-toluene diisocyanate and xylene, reacting for 5 hours at the rotation speed of 200 r/min and the temperature of 90 ℃ to obtain hyperbranched monomer, uniformly mixing hyperbranched monomer, caprolactam and xylene, stirring and adding sodium hydroxide at the rotation speed of 300 r/min and the temperature of 135 ℃, heating to 175 ℃, reacting for 1.5 hours, removing xylene, adding a substrate into deionized water, boiling and preserving heat for 12 hours, filtering to remove filtrate, and drying to obtain the modified nylon.
The dosage ratio of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane, the deionized water and the 1, 3-tetramethyl disiloxane in the step A1 is 2mmo l:3mmo l:3mL:4mmo l, and the dosage of the concentrated sulfuric acid is 10% of the mass of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane and the 1, 3-tetramethyl disiloxane.
The molar ratio of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol in the step A2 is 1:4:4, the concentration of chloroplatinic acid in the mixture of pentaerythritol tetraacrylate, intermediate 1 and allyl alcohol is 12ppm, and the dosage ratio of amino, maleic anhydride, triethylamine, acetic anhydride and nickel acetate on hyperbranched alcohol is 50mmo l:50mmo l:5mL:13mL:4g.
The molar ratio of the alcoholic hydroxyl group on the modified hyperbranched alcohol to the isocyanate group on the 2, 4-toluene diisocyanate in the step A3 is 1:2, and the mass ratio of the hyperbranched monomer, the caprolactam and the sodium hydroxide is 5:100:10.
The reinforced resin is prepared by the following steps:
step B1: mixing sodium dodecyl sulfate and deionized water, stirring at a rotation speed of 300 r/min, adding cinnamic acid and styrene, heating to 80 ℃, adding potassium persulfate, reacting for 3 hours, heating to 90 ℃, continuing to react for 1.5 hours, cooling to room temperature, adding aluminum sulfate, stirring for 10 min, filtering to remove filtrate, adding a substrate into deionized water, preserving heat for 10 min at a temperature of 85 ℃, filtering and drying to obtain modified polystyrene;
step B2: dissolving modified polystyrene in dimethylbenzene, adding 2-aminobenzene boric acid and 1-hydroxybenzotriazole, reacting for 5 hours at the temperature of 50 ℃ at the rotation speed of 300 r/min, distilling to remove dimethylbenzene, adding a substrate into deionized water, filtering to remove filtrate, and drying the substrate to obtain the reinforced resin.
The dosage ratio of the sodium dodecyl sulfate, deionized water, cinnamic acid, styrene, potassium persulfate and aluminum sulfate in the step B1 is 0.8g:600mL:20g:200mL:3.5g:1.6g.
The molar ratio of carboxyl, 2-aminobenzene boric acid and 1-hydroxybenzotriazole on the modified polystyrene in the step B2 is 1:1:1.2.
Comparative example 1
This comparative example was compared with example 1 without the addition of reinforcing resin, and the rest of the procedure was the same.
Comparative example 2
This comparative example uses PA6 brand YH-400 instead of modified nylon as compared with example 1, and the rest of the procedure is the same.
The films prepared in examples 1-3 and comparative examples 1-2 were tested for tensile strength at a test speed of 100 mm/min at 25℃and 50% RH according to ASTM-D638, and the films prepared in examples 1-3 and comparative examples 1-2 were immersed in deionized water at 25℃for 24 hours, and the water absorption was calculated, and the results are shown in the following table.
As is clear from the above table, the films prepared in examples 1 to 3 have tensile strengths of 264.3 to 265.1MPa and water absorption of 0% at 24 hours, and the films of the present invention have excellent mechanical properties and are not liable to absorb water.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (9)
1. A preparation method of a high-strength and high-toughness plastic film is characterized by comprising the following steps: the method specifically comprises the following steps:
adding modified nylon, reinforced resin and benzoyl peroxide into a double-screw extruder, carrying out melt extrusion to obtain composite particles, adding the composite particles into a three-layer coextrusion casting machine, carrying out extrusion molding, and then stretching into a film by using a biaxial stretching testing machine to obtain the high-strength and high-toughness plastic film.
2. The method for preparing the high-strength and high-toughness plastic film according to claim 1, which is characterized in that: the modified nylon is prepared by the following steps:
step A1: adding 3-aminopropyl methyl dimethoxy silane and dimethyl dichloro silane into deionized water, stirring, adding tetrahydrofuran and concentrated sulfuric acid, heating and preserving heat, adding 1, 3-tetramethyl disiloxane, and reacting to obtain an intermediate 1;
step A2: mixing pentaerythritol tetraacrylate, an intermediate 1 and xylene, stirring, adding chloroplatinic acid, heating for reaction, adding propenol, continuing to react to prepare hyperbranched alcohol, mixing and stirring hyperbranched alcohol, maleic anhydride and DMF, adding triethylamine, acetic anhydride and nickel acetate, reacting, distilling to remove DMF, adding deionized water, filtering to remove filtrate, and preparing modified hyperbranched alcohol;
step A3: and (3) mixing the modified hyperbranched alcohol, 2, 4-toluene diisocyanate and xylene for reaction to prepare a hyperbranched monomer, mixing and stirring the hyperbranched monomer, caprolactam and xylene, adding sodium hydroxide, heating for reaction, removing xylene, adding a substrate into deionized water, boiling for heat preservation, filtering to remove filtrate, and drying to prepare the modified nylon.
3. The method for preparing the high-strength and high-toughness plastic film according to claim 2, which is characterized in that: the dosage ratio of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane, the deionized water and the 1, 3-tetramethyl disiloxane in the step A1 is 2mmol, 3mL, 4mmol, and the concentrated sulfuric acid is 8-10% of the mass of the 3-aminopropyl methyl dimethoxy silane, the dimethyl dichloro silane and the 1, 3-tetramethyl disiloxane.
4. The method for preparing the high-strength and high-toughness plastic film according to claim 2, which is characterized in that: the molar ratio of pentaerythritol tetraacrylate to intermediate 1 to allyl alcohol in the step A2 is 1:4:4, the concentration of chloroplatinic acid in the mixture of pentaerythritol tetraacrylate, intermediate 1 and allyl alcohol is 10-12ppm, and the dosage ratio of amino group, maleic anhydride, triethylamine, acetic anhydride and nickel acetate on hyperbranched alcohol is 50mmol:50mmol:5mL:13mL:4g.
5. The method for preparing the high-strength and high-toughness plastic film according to claim 2, which is characterized in that: the molar ratio of the alcoholic hydroxyl group on the modified hyperbranched alcohol to the isocyanate group on the 2, 4-toluene diisocyanate in the step A3 is 1:2, and the mass ratio of the hyperbranched monomer, the caprolactam and the sodium hydroxide is 3-5:100:8-10.
6. The method for preparing the high-strength and high-toughness plastic film according to claim 1, which is characterized in that: the reinforced resin is prepared by the following steps:
step B1: mixing and stirring sodium dodecyl sulfate and deionized water, adding cinnamic acid and styrene, heating, adding potassium persulfate, reacting, continuously heating, cooling to room temperature, adding aluminum sulfate, stirring, filtering to remove filtrate, adding a substrate into deionized water, preserving heat, filtering and drying to obtain modified polystyrene;
step B2: and (3) dissolving the modified polystyrene in dimethylbenzene, adding 2-aminobenzene boric acid and 1-hydroxybenzotriazole, reacting, distilling to remove dimethylbenzene, adding a substrate into deionized water, filtering to remove filtrate, and drying the substrate to obtain the reinforced resin.
7. The method for preparing a high-strength and high-toughness plastic film according to claim 6, wherein the method comprises the following steps: the dosage ratio of the sodium dodecyl sulfate, deionized water, cinnamic acid, styrene, potassium persulfate and aluminum sulfate in the step B1 is 0.8g:600mL:20g:200mL:3.5g:1.6g.
8. The method for preparing a high-strength and high-toughness plastic film according to claim 6, wherein the method comprises the following steps: the molar ratio of carboxyl, 2-aminobenzene boric acid and 1-hydroxybenzotriazole on the modified polystyrene in the step B2 is 1:1:1.2.
9. A high-strength and high-toughness plastic film is characterized in that: the preparation method according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117343548A (en) * | 2023-12-06 | 2024-01-05 | 天津立孚光电科技股份有限公司 | Aging-resistant six-class four-pair unshielded outdoor network cable and preparation method thereof |
| CN117943264A (en) * | 2024-03-26 | 2024-04-30 | 锦绣防水科技有限公司 | Waterproof and heat-insulating modified asphalt coiled material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248909A (en) * | 2021-05-06 | 2021-08-13 | 昆山运城塑业有限公司 | High-puncture-force biaxially oriented polyamide film and preparation method thereof |
-
2023
- 2023-03-02 CN CN202310190913.3A patent/CN116102878A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113248909A (en) * | 2021-05-06 | 2021-08-13 | 昆山运城塑业有限公司 | High-puncture-force biaxially oriented polyamide film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王国建: "《功能高分子材料 第2版》", 中国石化出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117343548A (en) * | 2023-12-06 | 2024-01-05 | 天津立孚光电科技股份有限公司 | Aging-resistant six-class four-pair unshielded outdoor network cable and preparation method thereof |
| CN117343548B (en) * | 2023-12-06 | 2024-02-20 | 天津立孚光电科技股份有限公司 | Aging-resistant six-class four-pair unshielded outdoor network cable and preparation method thereof |
| CN117943264A (en) * | 2024-03-26 | 2024-04-30 | 锦绣防水科技有限公司 | Waterproof and heat-insulating modified asphalt coiled material and preparation method thereof |
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