CN118082341B - Preparation method of strong crossed membrane - Google Patents

Preparation method of strong crossed membrane Download PDF

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CN118082341B
CN118082341B CN202410480074.3A CN202410480074A CN118082341B CN 118082341 B CN118082341 B CN 118082341B CN 202410480074 A CN202410480074 A CN 202410480074A CN 118082341 B CN118082341 B CN 118082341B
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microbeads
parts
base film
coating
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CN118082341A (en
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孙月春
杨金明
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Shandong Hongtu New Material Technology Co ltd
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Shandong Hongtu New Material Technology Co ltd
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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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09J157/02—Copolymers of mineral oil hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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Abstract

The invention discloses a preparation method of a strong crossed membrane, which relates to the technical field of crossed membranes, and comprises the following steps of 1, preparing a composite base membrane; the preparation method comprises the steps of (1) sending high-density polyethylene, linear low-density polyethylene, modified resin, an antioxidant, a flame retardant, a stabilizer, an ultraviolet resistant agent and ceramic microbeads to a mixer according to weight proportion to be mixed, heating and stirring the mixture to obtain molten mixed slurry, extruding the molten mixed slurry through a die head, and then carrying out blow molding, cooling and stretching to obtain a base film; step 2, preparing a noise reduction and heat insulation layer; uniformly coating the sound-insulating coating on at least one side surface of the aluminum foil through a coating machine; step 3, preparing self-adhesive glue; step 4, preparing a strong crossed membrane; and sequentially pressing the composite base film, the noise reduction and heat insulation layer and the composite base film in sequence. Therefore, the product has good sound insulation capability through the addition of ceramic particles and inorganic aerogel, and the addition of aluminum foil not only increases the heat insulation capability, but also weakens the penetrating capability of ultraviolet rays.

Description

Preparation method of strong crossed membrane
Technical Field
The invention belongs to the technical field of crossed films, and particularly relates to a preparation method of a strong crossed film.
Background
The waterproof coiled material refers to a waterproof material product prepared by dipping asphalt or polymer waterproof materials on a matrix, and the waterproof material product is provided in a coiled material form and is called a waterproof coiled material. The waterproof coiled material is mainly used for building walls, roofs, tunnels, highways, refuse landfills and the like, plays a role in resisting leakage of external rainwater and underground water, is a flexible coiled building material product, is used as a non-leakage connection between an engineering foundation and a building, is a first waterproof barrier of the whole engineering, and plays a vital role in the whole engineering.
The strong cross laminated film self-adhesive waterproof coiled material is a high-performance and cold-construction tyre-free waterproof coiled material. The self-adhesive waterproof coiled material takes synthetic rubber, asphalt, tackifier and anti-aging agent as base materials, adopts anti-sticking isolation paper/film as isolation layer, and has the characteristics of tearing resistance, stable size and the like. However, when the existing strong crossed film is used outdoors, the strong crossed film can be aged rapidly due to ultraviolet irradiation in sunlight, and the existing material for producing the strong crossed film is generally inflammable, so that the strong crossed film is easy to burn rapidly when encountering open fire.
Aiming at the problems, the Chinese patent with the application number of CN201811134252.8 discloses an exposed flame-retardant type strong crossed film self-adhesive waterproof roll and a preparation method thereof, and the publication number of the Chinese patent is CN109294469B, which is characterized in that the invention provides an exposed flame-retardant type strong crossed film self-adhesive waterproof roll and a preparation method thereof, wherein the surface anti-aging layer of the roll comprises 70-80 parts of terpolymer ASA, 2-3 parts of white master batch, 1-2 parts of antioxidant, 3-5 parts of ultraviolet absorber and 20-30 parts of flame retardant; the waterproof layer of the flame-retardant strong crossed film comprises 60-80 parts of high-density polyethylene, 10-20 parts of KT resin, 1-2 parts of antioxidant and 20-30 parts of flame retardant; the invention provides an exposed flame-retardant type strong cross film self-adhesive waterproof coiled material, which comprises 30-40 parts of petroleum asphalt, 8-10 parts of vinyl resin, 10-30 parts of aromatic hydrocarbon oil, 8-10 parts of SBR (styrene butadiene rubber), 2-4 parts of polypropylene PP (polypropylene), 10-20 parts of light calcium carbonate), 5-10 parts of KT resin and 20-30 parts of flame retardant.
However, the above patent still has a disadvantage in that its heat-insulating and sound-insulating ability is poor, which results in its single function.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a preparation method of a strong crossed film, which aims to solve the problems of poor heat preservation, sound insulation and other performances of the crossed film in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a preparation method of a strong crossed membrane comprises the following steps:
step 1, preparing a composite base film;
the high-density polyethylene, the linear low-density polyethylene, the modified resin, the antioxidant, the flame retardant, the stabilizer, the anti-ultraviolet agent and the ceramic microbeads are sent to a mixer according to the weight proportion to be mixed to obtain a mixture;
Heating and stirring the mixture to obtain molten mixed slurry, extruding the molten mixed slurry through a die head, and then carrying out blow molding, cooling and stretching to obtain a base film; carrying out rotary cutting and compound hot pressing on the base film to obtain a compound base film;
Step 2, preparing a noise reduction and heat insulation layer;
The preparation method comprises the steps of (1) conveying acrylate emulsion, a thickener, ceramic microbeads, inorganic aerogel, glass fibers, an antioxidant, a flame retardant, a dispersing agent and a stabilizing agent to a dispersing machine for high-speed rotary mixing to obtain a sound-insulating coating, uniformly coating the sound-insulating coating on at least one side surface of an aluminum foil through a coating machine, and drying and shaping after coating is completed to obtain a noise-reducing heat-insulating layer;
step 3, preparing self-adhesive glue;
Heating and mixing petroleum asphalt, tackifier, aromatic oil, SBS, nano calcium carbonate, dioctyl phthalate, polybutene, flame retardant, anti-ultraviolet agent, antioxidant and dispersing agent to obtain self-adhesive;
step 4, preparing a strong crossed membrane;
sequentially pressing the composite base film, the noise reduction and heat insulation layer and the composite base film in sequence, and coating self-adhesive between different film layers; or sequentially pressing the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film in sequence, wherein self-adhesive is coated between different film layers;
and cooling and shaping after the lamination is finished to obtain a strong crossed membrane finished product, and then rolling and warehousing.
Wherein in the step 1, the extrusion temperature of a die head is 150-200 ℃, the extrusion pressure is 2-3MPa, the cooling temperature is 60-80 ℃, and the stretching temperature is 90-120 ℃; the hot pressing compounding angle of the base film is 45-75 degrees.
Wherein, in the step 1, according to the weight portion, 30-40 portions of high-density polyethylene, 20-25 portions of linear low-density polyethylene, 10-20 portions of modified resin, 5-10 portions of antioxidant, 5-10 portions of flame retardant, 2-8 portions of stabilizer, 3-7 portions of ultraviolet resistant agent and 15-20 portions of ceramic microbeads; the high density polyethylene is high density polyethylene 7000F and the linear low density polyethylene is linear low density polyethylene 7042.
Wherein the modified resin consists of 30-40 parts by weight of ethylene-vinyl acetate copolymer, 40-50 parts by weight of maleic anhydride grafted polyethylene and 20-30 parts by weight of polyethylene terephthalate.
Wherein the antioxidant comprises at least one of tert-butyl p-hydroxy phenol, butyl hydroxy benzoate, tin bis (2-hexylphenyl) dithiosuccinate, triphenyl phosphate and tris (2, 4-dimethylphenyl) phosphate; the flame retardant comprises at least one of polybrominated diphenyl, polybrominated diphenyl ether, hexachlorocyclohexanolester, tris (dimethylamino) propyl phosphate and magnesium hydroxide; the stabilizer comprises at least one of tin tris (2-ethylhexyl) sulfosuccinate, tin stearate, phenolic resin and ethanolamine; the anti-ultraviolet agent comprises at least one of 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone and 2- (2-hydroxy-3, 5-di-tert-phenyl) -5-chlorobenzotriazole.
The ceramic microbeads are formed by mixing silicate microbeads, aluminum oxide microbeads and silicon oxide microbeads, wherein the silicate microbeads, the aluminum oxide microbeads and the silicon oxide microbeads are spherical or ellipsoidal, the particle sizes of the silicate microbeads and the aluminum oxide microbeads are 10-30 mu m, and the ceramic microbeads comprise 20-30 parts of silicate microbeads, 30-40 parts of aluminum oxide microbeads and 30-40 parts of silicon oxide microbeads in parts by weight.
In the step 2, 30-40 parts of acrylate emulsion, 10-15 parts of thickener, 12-20 parts of ceramic microbeads, 15-20 parts of inorganic aerogel, 10-18 parts of glass fiber, 2-8 parts of antioxidant, 3-7 parts of flame retardant, 5-10 parts of dispersing agent and 8-14 parts of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 3-8 mu m, the coating temperature is 60-80 ℃, and the coating speed is 10-20 m/min.
Wherein the thickener comprises at least one of hydroxypropyl methylcellulose, polyacrylamide, sodium carboxymethylcellulose, hydroxypropyl methylcellulose ether and polyethylene glycol; the particle size of the inorganic aerogel is 5-20 mu m, and the inorganic aerogel comprises at least one of silicon dioxide aerogel, aluminum oxide aerogel and zinc oxide aerogel; the dispersing agent comprises at least one of fatty alcohol ethoxy ether, fatty alcohol phenyl ether, fatty acid ethoxy ether and fatty alcohol ester.
Wherein in the step 4, the pressing temperature is 75-95 ℃ and the pressing pressure is 3-5MPa; the tackifier comprises at least one of polyvinyl alcohol, polyacrylamide and hydroxypropyl methyl cellulose.
After the technical scheme is adopted, the beneficial effect of the scheme is as follows:
Firstly, the cross film manufactured by the scheme has excellent tensile strength and low temperature resistance through sequentially laminating according to the sequence of the composite base film, the noise reduction and heat insulation layer, the composite base film or sequentially laminating according to the sequence of the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film. And secondly, the product has excellent anti-aging capacity through the addition of the anti-ultraviolet agent, the flame retardant and the antioxidant. Thirdly, the product has good sound insulation capability through the addition of ceramic particles and inorganic aerogel, and the addition of aluminum foil not only increases the heat insulation capability, but also weakens the penetrating capability of ultraviolet rays.
Detailed Description
Examples:
a preparation method of a strong crossed membrane comprises the following steps:
step 1, preparing a composite base film;
the high-density polyethylene, the linear low-density polyethylene, the modified resin, the antioxidant, the flame retardant, the stabilizer, the anti-ultraviolet agent and the ceramic microbeads are sent to a mixer according to the weight proportion to be mixed to obtain a mixture;
Heating and stirring the mixture to obtain molten mixed slurry, extruding the molten mixed slurry through a die head, and then carrying out blow molding, cooling and stretching to obtain a base film; carrying out rotary cutting and compound hot pressing on the base film to obtain a compound base film;
Step 2, preparing a noise reduction and heat insulation layer;
The preparation method comprises the steps of (1) conveying acrylate emulsion, a thickener, ceramic microbeads, inorganic aerogel, glass fibers, an antioxidant, a flame retardant, a dispersing agent and a stabilizing agent to a dispersing machine for high-speed rotary mixing to obtain a sound-insulating coating, uniformly coating the sound-insulating coating on at least one side surface of an aluminum foil through a coating machine, and drying and shaping after coating is completed to obtain a noise-reducing heat-insulating layer; the aluminum foil has good heat insulation capacity, the ceramic microbeads are of porous structures and have good sound insulation capacity, and the aerogel is an extremely light and porous solid material and has excellent heat insulation and sound insulation performances due to the extremely low density and the highly open pore structure.
Step 3, preparing self-adhesive glue;
Heating and mixing petroleum asphalt, tackifier, aromatic oil, SBS, nano calcium carbonate, dioctyl phthalate, polybutene, flame retardant, anti-ultraviolet agent, antioxidant and dispersing agent to obtain self-adhesive;
step 4, preparing a strong crossed membrane;
sequentially pressing the composite base film, the noise reduction and heat insulation layer and the composite base film in sequence, and coating self-adhesive between different film layers; or sequentially pressing the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film in sequence, wherein self-adhesive is coated between different film layers;
and cooling and shaping after the lamination is finished to obtain a strong crossed membrane finished product, and then rolling and warehousing.
In the step 1, the extrusion temperature of a die head is 150-200 ℃, the extrusion pressure is 2-3MPa, the cooling temperature is 60-80 ℃, and the stretching temperature is 90-120 ℃; the hot pressing compounding angle of the base film is 45-75 degrees.
In the step 1, according to weight portions, 30-40 portions of high-density polyethylene, 20-25 portions of linear low-density polyethylene, 10-20 portions of modified resin, 5-10 portions of antioxidant, 5-10 portions of flame retardant, 2-8 portions of stabilizer, 3-7 portions of ultraviolet resistant agent and 15-20 portions of ceramic microbeads; the high density polyethylene is high density polyethylene 7000F and the linear low density polyethylene is linear low density polyethylene 7042.
The modified resin consists of 30-40 parts of ethylene-vinyl acetate copolymer, 40-50 parts of maleic anhydride grafted polyethylene and 20-30 parts of polyethylene terephthalate by weight.
The antioxidant has the functions of delaying the aging of the crossed membrane and improving the service life of the crossed membrane, so that the antioxidant comprises at least one of tert-butyl p-hydroxy phenol, butyl hydroxy benzoate, bis (2-hexylphenyl) dithiotin succinate, triphenyl phosphate and tris (2, 4-dimethylphenyl) phosphate; the flame retardant has the function of improving the ignition point of the cross film or generating fire extinguishing substances by reaction in the combustion process of the cross film, so the flame retardant comprises at least one of polybrominated diphenyl, polybrominated diphenyl ether, hexachlorocyclohexanolester, tris (dimethylamino) propyl phosphate and magnesium hydroxide; the stabilizer has two functions, namely, the stability of the crossed film in the production process is ensured, and the stability of the crossed film in daily use is ensured, so the stabilizer comprises at least one of tin tris (2-ethylhexyl) thiosuccinate, tin stearate, phenolic resin and ethanolamine; the anti-ultraviolet agent has the function of absorbing or reflecting ultraviolet rays, and thus comprises at least one of 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, and 2- (2-hydroxy-3, 5-di-tert-phenyl) -5-chlorobenzotriazole.
The ceramic microbeads are formed by mixing silicate microbeads, aluminum oxide microbeads and silicon oxide microbeads, wherein the silicate microbeads, the aluminum oxide microbeads and the silicon oxide microbeads are spherical or ellipsoidal, the particle sizes of the silicate microbeads and the aluminum oxide microbeads are 10-30 mu m, and the ceramic microbeads comprise 20-30 parts of silicate microbeads, 30-40 parts of aluminum oxide microbeads and 30-40 parts of silicon oxide microbeads in parts by weight. Because silicate microbeads, alumina microbeads and silica microbeads are all porous, they can absorb noise and reduce noise transmission.
In the step 2, according to weight portions, 30-40 portions of acrylate emulsion, 10-15 portions of thickener, 12-20 portions of ceramic microbeads, 15-20 portions of inorganic aerogel, 10-18 portions of glass fiber, 2-8 portions of antioxidant, 3-7 portions of flame retardant, 5-10 portions of dispersing agent and 8-14 portions of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 3-8 mu m, the coating temperature is 60-80 ℃, and the coating speed is 10-20 m/min.
The thickener comprises at least one of hydroxypropyl methyl cellulose, polyacrylamide, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose ether and polyethylene glycol; the particle size of the inorganic aerogel is 5-20 mu m, and the inorganic aerogel comprises at least one of silicon dioxide aerogel, aluminum oxide aerogel and zinc oxide aerogel; the dispersing agent comprises at least one of fatty alcohol ethoxy ether, fatty alcohol phenyl ether, fatty acid ethoxy ether and fatty alcohol ester.
In the step 4, the pressing temperature is 75-95 ℃ and the pressing pressure is 3-5MPa; the tackifier comprises at least one of polyvinyl alcohol, polyacrylamide and hydroxypropyl methyl cellulose.
Example 1:
A cross-film was produced following the procedure described in the examples above, wherein:
in the step 1, the extrusion temperature of a die head is 150 ℃, the extrusion pressure is 2MPa, the cooling temperature is 60-80 ℃, and the stretching temperature is 90 ℃; the hot pressing compounding angle of the base film is 45 degrees.
In the step 1,30 parts of high-density polyethylene, 20 parts of linear low-density polyethylene, 10 parts of modified resin, 5 parts of antioxidant, 5 parts of flame retardant, 2 parts of stabilizer, 3 parts of anti-ultraviolet agent and 15 parts of ceramic microbeads.
The modified resin consists of 30 parts of ethylene-vinyl acetate copolymer, 40 parts of maleic anhydride grafted polyethylene and 20 parts of polyethylene terephthalate by weight. The antioxidant is tert-butyl p-hydroxy phenol; the flame retardant is polybrominated diphenyl; the stabilizer is tin tris (2-ethylhexyl) thiosuccinate; the anti-ultraviolet agent is 2- (2-hydroxy-5-methylphenyl) benzotriazole.
The ceramic microbeads are formed by mixing silicate microbeads, alumina microbeads and silica microbeads, the particle sizes of the ceramic microbeads are 10 mu m, and the ceramic microbeads comprise 20 parts of silicate microbeads, 30 parts of alumina microbeads and 30 parts of silica microbeads according to parts by weight.
In the step 2, according to the weight portions, 30 portions of acrylate emulsion, 10 portions of thickener, 12 portions of ceramic microbeads, 15 portions of inorganic aerogel, 10 portions of glass fiber, 2 portions of antioxidant, 3 portions of flame retardant, 5 portions of dispersing agent and 8 portions of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 3 mu m, the coating temperature is 60 ℃, and the coating speed is 10m/min.
The thickener is hydroxypropyl methyl cellulose; the particle size of the inorganic aerogel is 5 mu m, and the inorganic aerogel is silica aerogel; the dispersing agent is fatty alcohol ethoxy ether.
In the step 4, the pressing temperature is 75 ℃, and the pressing pressure is 3MPa; the tackifier is polyvinyl alcohol.
Example 2:
this embodiment differs from embodiment 1 in that:
In the step 1, the extrusion temperature of a die head is 160 ℃, the extrusion pressure is 2.2MPa, the cooling temperature is 65 ℃, and the stretching temperature is 95 ℃; the hot pressing compounding angle of the base film is 50 degrees.
In the step 1, the weight portions of the high-density polyethylene are calculated to be 32 portions, the linear low-density polyethylene is 21 portions, the modified resin is 12 portions, the antioxidant is 5 portions, the flame retardant is 6 portions, the stabilizer is 3 portions, the anti-ultraviolet agent is 4 portions, and the ceramic microbeads are 16 portions.
The modified resin consists of 35 parts of ethylene-vinyl acetate copolymer, 45 parts of maleic anhydride grafted polyethylene and 25 parts of polyethylene terephthalate by weight. The antioxidant is mixed by butyl hydroxybenzoate and bis (2-hexylphenyl) tin dithiosuccinate; the flame retardant is mixed by polybromodiphenyl ether and hexachlorohexaol ester; the stabilizer is tin stearate and phenolic resin; the anti-ultraviolet agent is a mixture of 2, 4-dihydroxybenzophenone and 2-hydroxy-4-methoxybenzophenone.
The ceramic microbeads are formed by mixing silicate microbeads, alumina microbeads and silica microbeads, the particle sizes of the ceramic microbeads are 15 mu m, and the ceramic microbeads comprise 25 parts of silicate microbeads, 35 parts of alumina microbeads and 35 parts of silica microbeads in parts by weight.
In the step 2, according to the weight portions, 35 portions of acrylate emulsion, 12 portions of thickener, 13 portions of ceramic microbeads, 16 portions of inorganic aerogel, 12 portions of glass fiber, 3 portions of antioxidant, 4 portions of flame retardant, 6 portions of dispersing agent and 10 portions of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 4 mu m, the coating temperature is 65 ℃, and the coating speed is 15m/min.
The thickening agent is a mixture of polyacrylamide and sodium carboxymethyl cellulose; the particle size of the inorganic aerogel is 10 mu m, and the inorganic aerogel is a mixture of silica aerogel, alumina aerogel and zinc oxide aerogel; the dispersing agent is a mixture of fatty alcohol phenyl ether and fatty acid ethoxy ether.
In the step 4, the laminating temperature is 76 ℃ and the laminating pressure is 4MPa; the tackifier is polyvinyl alcohol.
Example 3:
A cross-film was produced following the procedure described in the examples above, wherein:
In the step 1, the extrusion temperature of a die head is 180 ℃, the extrusion pressure is 2.5MPa, the cooling temperature is 72 ℃, and the stretching temperature is 105 ℃; the hot pressing compounding angle of the base film is 65 degrees.
In the step 1, the weight portions of the components are 33 portions of high-density polyethylene, 24 portions of linear low-density polyethylene, 13 portions of modified resin, 7 portions of antioxidant, 7 portions of flame retardant, 5 portions of stabilizer, 5 portions of ultraviolet resistant agent and 18 portions of ceramic microbeads.
The modified resin consists of 36 parts of ethylene-vinyl acetate copolymer, 47 parts of maleic anhydride grafted polyethylene and 26 parts of polyethylene terephthalate by weight. The antioxidant is mixed by butyl hydroxybenzoate and bis (2-hexylphenyl) tin dithiosuccinate; the flame retardant is mixed by polybromodiphenyl ether and hexachlorohexaol ester; the stabilizer is tin stearate and phenolic resin; the anti-ultraviolet agent is a mixture of 2, 4-dihydroxybenzophenone and 2-hydroxy-4-methoxybenzophenone.
The ceramic microbeads are formed by mixing silicate microbeads, alumina microbeads and silica microbeads, the particle sizes of the ceramic microbeads are 20 mu m, and the ceramic microbeads comprise 26 parts of silicate microbeads, 36 parts of alumina microbeads and 37 parts of silica microbeads in parts by weight.
In the step 2, 36 parts of acrylate emulsion, 13 parts of thickener, 15 parts of ceramic microbeads, 17 parts of inorganic aerogel, 15 parts of glass fiber, 5 parts of antioxidant, 5 parts of flame retardant, 7 parts of dispersing agent and 13 parts of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 5 mu m, the coating temperature is 70 ℃, and the coating speed is 16m/min.
The thickener is a mixture of polyacrylamide, sodium carboxymethyl cellulose and hydroxypropyl methyl cellulose ether; the particle size of the inorganic aerogel is 15 mu m, and the inorganic aerogel is a mixture of silica aerogel, alumina aerogel and zinc oxide aerogel; the dispersing agent is a mixture of fatty alcohol phenyl ether and fatty acid ethoxy ether.
In the step 4, the laminating temperature is 76 ℃ and the laminating pressure is 4MPa; the tackifier is a mixture of polyacrylamide and hydroxypropyl methylcellulose.
Example 4:
A cross-film was produced following the procedure described in the examples above, wherein:
in the step 1, the extrusion temperature of a die head is 200 ℃, the extrusion pressure is 3MPa, the cooling temperature is 80 ℃, and the stretching temperature is 120 ℃; the hot pressing compounding angle of the base film is 75 degrees.
In the step 1, according to the weight parts, 40 parts of high-density polyethylene, 25 parts of linear low-density polyethylene, 20 parts of modified resin, 10 parts of antioxidant, 10 parts of flame retardant, 8 parts of stabilizer, 7 parts of anti-ultraviolet agent and 20 parts of ceramic microbeads; the high density polyethylene is high density polyethylene 7000F and the linear low density polyethylene is linear low density polyethylene 7042.
The modified resin consists of 40 parts of ethylene-vinyl acetate copolymer, 50 parts of maleic anhydride grafted polyethylene and 30 parts of polyethylene terephthalate by weight.
The antioxidant is a mixture of tert-butyl p-hydroxy phenol, butyl hydroxy benzoate, tin di (2-hexylphenyl) dithiosuccinate, triphenyl phosphate and tri (2, 4-dimethylphenyl) phosphate; the flame retardant is a mixture of polybrominated diphenyl, polybrominated diphenyl ether, hexachlorohexaol ester, tri (dimethylamino) propyl phosphate and magnesium hydroxide; the stabilizer is a mixture of tin tris (2-ethylhexyl) sulfosuccinate, tin stearate, phenolic resin and ethanolamine; the anti-ultraviolet agent is a mixture of 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone and 2- (2-hydroxy-3, 5-di-tert-phenyl) -5-chlorobenzotriazole.
The ceramic microbeads are formed by mixing silicate microbeads, aluminum oxide microbeads and silicon oxide microbeads, wherein the silicate microbeads, the aluminum oxide microbeads and the silicon oxide microbeads are spherical or ellipsoidal, the particle sizes of the silicate microbeads and the aluminum oxide microbeads are 30 mu m, and the silicate microbeads are 30 parts, 40 parts of the aluminum oxide microbeads and 40 parts of the silicon oxide microbeads in parts by weight.
In the step 2, 40 parts of acrylate emulsion, 15 parts of thickener, 20 parts of ceramic microbeads, 20 parts of inorganic aerogel, 18 parts of glass fiber, 8 parts of antioxidant, 7 parts of flame retardant, 10 parts of dispersing agent and 14 parts of stabilizer.
In the step 2, the coating thickness of the sound-insulating coating is 8 mu m, the coating temperature is 80 ℃, and the coating speed is 20m/min.
The thickener is a mixture of hydroxypropyl methylcellulose, polyacrylamide, sodium carboxymethyl cellulose, hydroxypropyl methylcellulose ether and polyethylene glycol; the particle size of the inorganic aerogel is 20 mu m, and the inorganic aerogel is a mixture of silica aerogel, alumina aerogel and zinc oxide aerogel; the dispersing agent is a mixture of fatty alcohol ethoxy ether, fatty alcohol phenyl ether, fatty acid ethoxy ether and fatty alcohol ester.
In the step 4, the laminating temperature is 95 ℃ and the laminating pressure is 5MPa; the tackifier is a mixture of polyvinyl alcohol, polyacrylamide and hydroxypropyl methyl cellulose.
Example 5:
In examples 1-4, the lamination method was: the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film are sequentially pressed together, and self-adhesive is coated between different film layers.
The difference between this embodiment and embodiment 4 is that the lamination method is as follows: the composite base film, the noise reduction and heat insulation layer and the composite base film are sequentially pressed together, and self-adhesion is coated between different film layers.
Comparative example 1:
this comparative example differs from example 4 in that: ceramic microbeads are not added in step 2.
Comparative example 2:
this comparative example differs from example 4 in that: no inorganic aerogel is added in step 2.
Comparative example 3:
This comparative example differs from example 4 in that: no noise-reducing and heat-insulating layer is added.
Comparative example 4:
this comparative example differs from example 4 in that: the lamination mode adopted in the comparative example is a composite base film, a noise reduction and heat insulation layer and a base film.
Comparative example 5:
This comparative example differs from example 4 in that: the self-adhesive glue coated between different film layers is randomly purchased in the market.
The products produced in examples 1-5 and comparative examples 1-5 were each subjected to experiments under uniform conditions, and the experimental parameters are shown in the following table:
As can be seen from the table, the scheme has the following advantages: firstly, the cross film manufactured by the scheme has excellent tensile strength and low temperature resistance through sequentially laminating according to the sequence of the composite base film, the noise reduction and heat insulation layer, the composite base film or sequentially laminating according to the sequence of the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film. And secondly, the product has excellent anti-aging capacity through the addition of the anti-ultraviolet agent, the flame retardant and the antioxidant. Thirdly, the product has good sound insulation capability through the addition of ceramic particles and inorganic aerogel, and the addition of aluminum foil not only increases the heat insulation capability, but also weakens the penetrating capability of ultraviolet rays.
The present invention is not limited to the above-described specific embodiments, and various modifications may be made by those skilled in the art without inventive effort from the above-described concepts, and are within the scope of the present invention.

Claims (6)

1. The preparation method of the strong crossed membrane is characterized by comprising the following steps:
step 1, preparing a composite base film;
the high-density polyethylene, the linear low-density polyethylene, the modified resin, the antioxidant, the flame retardant, the stabilizer, the anti-ultraviolet agent and the ceramic microbeads are sent to a mixer according to the weight proportion to be mixed to obtain a mixture;
Heating and stirring the mixture to obtain molten mixed slurry, extruding the molten mixed slurry through a die head, and then carrying out blow molding, cooling and stretching to obtain a base film; carrying out rotary cutting and compound hot pressing on the base film to obtain a compound base film;
the modified resin consists of ethylene-vinyl acetate copolymer, maleic anhydride grafted polyethylene and polyethylene terephthalate;
Step 2, preparing a noise reduction and heat insulation layer;
The preparation method comprises the steps of (1) conveying acrylate emulsion, a thickener, ceramic microbeads, inorganic aerogel, glass fibers, an antioxidant, a flame retardant, a dispersing agent and a stabilizing agent to a dispersing machine for high-speed rotary mixing to obtain a sound-insulating coating, uniformly coating the sound-insulating coating on at least one side surface of an aluminum foil through a coating machine, and drying and shaping after coating is completed to obtain a noise-reducing heat-insulating layer;
step 3, preparing self-adhesive glue;
Heating and mixing petroleum asphalt, tackifier, aromatic oil, SBS, nano calcium carbonate, dioctyl phthalate, polybutene, flame retardant, anti-ultraviolet agent, antioxidant and dispersing agent to obtain self-adhesive;
step 4, preparing a strong crossed membrane;
sequentially pressing the composite base film, the noise reduction and heat insulation layer and the composite base film in sequence, and coating self-adhesive between different film layers; or sequentially pressing the composite base film, the noise reduction and heat insulation layer, the base film, the noise reduction and heat insulation layer and the composite base film in sequence, wherein self-adhesive is coated between different film layers;
Cooling and shaping after the lamination is completed to obtain a strong crossed membrane finished product, and then rolling and warehousing;
In the step 1, according to weight portions, 30-40 portions of high-density polyethylene, 20-25 portions of linear low-density polyethylene, 10-20 portions of modified resin, 5-10 portions of antioxidant, 5-10 portions of flame retardant, 2-8 portions of stabilizer, 3-7 portions of ultraviolet resistant agent and 15-20 portions of ceramic microbeads; the high-density polyethylene is high-density polyethylene 7000F, and the linear low-density polyethylene is linear low-density polyethylene 7042; the modified resin consists of 30-40 parts of ethylene-vinyl acetate copolymer, 40-50 parts of maleic anhydride grafted polyethylene and 20-30 parts of polyethylene terephthalate by weight;
In the step 2, according to weight portions, 30-40 portions of acrylate emulsion, 10-15 portions of thickener, 12-20 portions of ceramic microbeads, 15-20 portions of inorganic aerogel, 10-18 portions of glass fiber, 2-8 portions of antioxidant, 3-7 portions of flame retardant, 5-10 portions of dispersing agent and 8-14 portions of stabilizer;
The ceramic microbeads are formed by mixing silicate microbeads, aluminum oxide microbeads and silicon oxide microbeads, wherein the silicate microbeads, the aluminum oxide microbeads and the silicon oxide microbeads are spherical or ellipsoidal, the particle sizes of the silicate microbeads and the aluminum oxide microbeads are 10-30 mu m, and the ceramic microbeads comprise 20-30 parts of silicate microbeads, 30-40 parts of aluminum oxide microbeads and 30-40 parts of silicon oxide microbeads in parts by weight.
2. The method for producing a strong cross film according to claim 1, wherein in step 1, the die extrusion temperature is 150 to 200 ℃, the extrusion pressure is 2 to 3MPa, the cooling temperature is 60 to 80 ℃, and the stretching temperature is 90 to 120 ℃; the hot pressing compounding angle of the base film is 45-75 degrees.
3. The method of preparing a strong cross membrane according to claim 1, wherein the antioxidant is butyl hydroxybenzoate; the flame retardant is magnesium hydroxide; the anti-ultraviolet agent comprises at least one of 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone and 2- (2-hydroxy-3, 5-di-tert-phenyl) -5-chlorobenzotriazole.
4. The method for preparing a strong cross film according to claim 1, wherein in the step 2, the coating thickness of the soundproof coating is 3-8 μm, the coating temperature is 60-80 ℃, and the coating speed is 10-20 m/min.
5. The method for preparing a strong cross film according to claim 1, wherein the thickener comprises at least one of hydroxypropyl methylcellulose, polyacrylamide, sodium carboxymethyl cellulose, hydroxypropyl methylcellulose ether, and polyethylene glycol; the particle size of the inorganic aerogel is 5-20 mu m, and the inorganic aerogel comprises at least one of silicon dioxide aerogel, aluminum oxide aerogel and zinc oxide aerogel.
6. The method for producing a strong cross film according to claim 1, wherein in step 4, the lamination temperature is 75 to 95 ℃ and the lamination pressure is 3 to 5MPa; the tackifier comprises at least one of polyvinyl alcohol, polyacrylamide and hydroxypropyl methyl cellulose.
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