CN117698228A - Production process of double-layer bubble type aluminum foil heat insulation film - Google Patents

Production process of double-layer bubble type aluminum foil heat insulation film Download PDF

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Publication number
CN117698228A
CN117698228A CN202310551560.5A CN202310551560A CN117698228A CN 117698228 A CN117698228 A CN 117698228A CN 202310551560 A CN202310551560 A CN 202310551560A CN 117698228 A CN117698228 A CN 117698228A
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aluminum foil
heat insulation
double
production process
insulation film
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CN202310551560.5A
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CN117698228B (en
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张继文
韩冰
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Guangxi Zhongju New Material Technology Co ltd
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Guangxi Zhongju New Material Technology Co ltd
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/125—Water, e.g. hydrated salts
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    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
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Abstract

The invention relates to the technical field of heat preservation and insulation materials, and particularly discloses a production process of a double-layer bubble type aluminum foil heat insulation film, which comprises the following steps: uniformly stirring ammonium polyphosphate, polyether polyol, a catalyst and water; uniformly stirring polyisocyanate, diaminodiphenylmethane and phthalate; uniformly stirring high-pressure polyethylene, linear polyethylene, modified elastomer powder, calcium carbonate, talcum powder and sodium bicarbonate; mixing, melting and extruding to prepare two base films, wherein one base film is subjected to plastic sucking and film forming on a vacuum roller to form bubbles, and then the two base films are combined into a whole with the other base film to obtain a bubble film; and (3) compounding one side, close to each other, of the two bubble films with the surfaces of the two sides of the aluminum foil in a hot pressing mode. The two layers of hard foaming bubble films are compounded on the surface of the aluminum foil, so that the effects of heat insulation and noise reduction are enhanced, meanwhile, the hard foaming bubble films can keep bubbles from being broken under certain pressure, and the service life of the aluminum foil compounded bubble film is prolonged.

Description

Production process of double-layer bubble type aluminum foil heat insulation film
Technical Field
The invention belongs to the technical field of heat preservation and insulation materials, and particularly relates to a production process of a double-layer bubble type aluminum foil heat insulation film.
Background
The heat insulating material can be applied to heat preservation or cold preservation engineering in the fields of construction, pipelines, aviation, storage and the like. When the material is applied to the field of building heat preservation, the material has excellent heat insulation performance and good fireproof and flame retardant performance.
The aluminum foil is used alone, and the rigidity, the strength and the heat insulation characteristics are not very good, so that the aluminum foil is generally compounded with other materials to prepare an aluminum foil composite heat insulation material in order to fully exert the heat insulation characteristics; the aluminum foil composite bubble film is a heat insulation material widely applied to flexible packaging, building material industry or heat insulation packaging.
The aluminum foil composite bubble film is generally composed of a plastic bubble film layer and aluminum foil layers arranged on two sides of the plastic bubble film layer (the structure of the aluminum foil composite bubble film is shown in fig. 1). The aluminum foil composite bubble film appearing in the current market has single function, and causes bubble hole in the bubble film to be broken under larger pressure extrusion, so that the service life of the aluminum foil bubble film is reduced.
Disclosure of Invention
The invention aims to provide a double-layer bubble type aluminum foil heat insulation film production process, which overcomes the defects of the prior art, and enhances the effects of heat insulation and noise reduction by compounding two layers of hard foaming bubble films on the surface of an aluminum foil, and meanwhile, the hard foaming bubble films can keep bubbles from cracking under a certain pressure, so that the service life of the aluminum foil composite bubble film is prolonged.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a double-layer bubble type aluminum foil heat insulation film production process comprises the following steps:
step one, taking quantitative ammonium polyphosphate, diethyl ethylphosphonate, polyether polyol, a catalyst and water, and mechanically stirring uniformly to obtain a component A;
step two, taking quantitative polyisocyanate, diaminodiphenyl methane and phthalate, and mechanically stirring uniformly to obtain a component B;
step three, taking quantitative high-pressure polyethylene, linear polyethylene, modified elastomer powder, calcium carbonate, talcum powder and sodium bicarbonate, and mechanically stirring uniformly to obtain a component C;
step four, the component B is prepared according to the following steps (1-3): 1, rapidly adding the component A according to the mass ratio, and vigorously stirring the mixture by a stirrer to obtain a mixture D;
step five, preheating an extruder to 140-160 ℃, adding the component C under the stirring condition, then heating to 180-200 ℃, rapidly adding the mixture D into the extruder, preparing two base films through a die, and compounding one base film with the other base film into a whole after the other base film is subjected to film-forming foaming by vacuum molding on a vacuum roller to obtain a bubble film;
step six, repeating the step five to prepare another bubble film;
and step seven, carrying out hot pressing compounding on one side, close to each other, of the two bubble films and the surfaces of the two sides of the aluminum foil under the action of traction compounding equipment to obtain the double-layer bubble type aluminum foil heat insulation film.
Further, in the first step, the mass ratio of the ammonium polyphosphate to the diethyl ethylphosphonate to the polyether polyol to the catalyst is 1:1: :1.2:0.1, wherein the catalyst is one or a mixture of any two of triethylene diamine and N, N-dimethyl cyclohexylamine in a mass ratio.
Further, the mass ratio of polyisocyanate, diaminodiphenylmethane and phthalate in step two is 3:1:2.
Further, in the third step, the mass ratio of the high-pressure polyethylene, the linear polyethylene, the modified elastomer powder, the calcium carbonate, the talcum powder and the sodium bicarbonate is 50:20:12:2:0.5:0.5.
Further, the modified elastomer powder comprises 60-80 parts of thermoplastic elastomer, 6-20 parts of natural plant fiber powder and 0.1-0.5 part of auxiliary agent;
the thermoplastic elastomer is one or more of polyethylene, polypropylene, metallocene polyolefin elastomer, thermoplastic polyether ester, polyimide, thermoplastic polyurethane and nylon materials, and the auxiliary agent is one or more of antioxidant, anti-aging agent, slipping agent, ultraviolet absorbent and compatilizer.
Further, the preparation method of the modified elastic powder comprises the following steps:
(1) Adding the thermoplastic elastomer, the natural plant fiber powder and the auxiliary agent into a screw extruder, and heating, melting and extruding;
(2) And (3) cooling, fixing, crushing and grinding the extrudate, and sieving the extrudate with a 200-mesh sieve to obtain the modified elastic powder.
Further, the hot-pressing compounding adopts a compounding roller of an electromagnetic induction heating device, and the electromagnetic induction heating device is utilized to heat the aluminum foil.
Further, PE films are uniformly coated on the surfaces of the two sides of the aluminum foil.
Compared with the prior art, the invention has the following implementation effects:
1. according to the invention, two layers of hard foaming bubble films are compounded on the surface of the aluminum foil, so that the effects of heat insulation and noise reduction are enhanced, meanwhile, the hard foaming bubble films can keep bubbles from cracking under a certain pressure, and the service life of the aluminum foil compounded bubble film is prolonged.
2. According to the invention, ammonium polyphosphate and diethyl ethylphosphonate are used as flame retardants, so that the flame retardant property of the bubble film is enhanced, the application field of the double-layer bubble type aluminum foil heat insulation film is expanded, and the practicability is improved.
The invention uses electromagnetic induction heating of the aluminum foil, and the aluminum foil and the bubble film are instantly combined by heating of the electromagnetic heating device, so that the bubble wall of the bubble film is not melted to realize hot melting, and the bubble strength is improved to the maximum extent.
Drawings
Fig. 1 is a schematic structural diagram of an aluminum foil composite bubble film in the prior art.
Fig. 2 is a schematic structural view of a double-layered bubble type aluminum foil heat insulation film in the present invention.
In the figure: 1. a bubble film; 2. aluminum foil.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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 embodiment discloses a production process of a double-layer bubble type aluminum foil 2 heat insulation film, which comprises the following steps:
firstly, taking quantitative ammonium polyphosphate, diethyl ethylphosphonate, polyether polyol, a catalyst and water, wherein the mass ratio of the ammonium polyphosphate to the diethyl ethylphosphonate to the polyether polyol to the catalyst is 1:1: :1.2: and 0.1, mechanically stirring uniformly to obtain the component A.
The catalyst is one or a mixture of any two of triethylene diamine and N, N-dimethyl cyclohexylamine in a mass ratio.
And step two, taking quantitative polyisocyanate, diaminodiphenylmethane and phthalate, wherein the mass ratio of the polyisocyanate to the diaminodiphenylmethane to the phthalate is 3:1:2, and mechanically stirring uniformly to obtain the component B.
And thirdly, taking quantitative high-pressure polyethylene, linear polyethylene, thermoplastic elastomer powder, calcium carbonate, talcum powder and sodium bicarbonate, wherein the mass ratio of the high-pressure polyethylene to the linear polyethylene to the thermoplastic elastomer powder to the calcium carbonate to the talcum powder to the sodium bicarbonate is 50:20:12:2:0.5:0.5, and mechanically stirring uniformly to obtain a component C.
Wherein the thermoplastic elastomer adopts one or more of polyethylene, polypropylene, metallocene polyolefin elastomer, thermoplastic polyether ester, polyimide, thermoplastic polyurethane and nylon materials.
Step four, the component B is prepared according to the following steps of 1:1, and the mixture was vigorously stirred by a stirrer to give a mixture D.
Step five, preheating an extruder to 140-160 ℃, adding the component C under the stirring condition, then heating to 180-200 ℃, rapidly adding the mixture D into the extruder, preparing two base films through a die, and compounding one base film with the other base film into a whole after one base film is subjected to film foaming and foaming on a vacuum roller to obtain the bubble film 1.
And step six, repeating the step five to obtain another bubble film 1.
And seventhly, carrying out hot-pressing compounding on one side, close to each other, of the two bubble films 1 and the two side surfaces of the aluminum foil 2 under the action of traction compounding equipment, wherein PE films are uniformly coated on the two side surfaces of the aluminum foil 2, compounding rollers of an electromagnetic induction heating device are adopted in hot-pressing compounding, and the aluminum foil 2 is heated by the electromagnetic induction heating device to obtain the double-layer bubble type aluminum foil 2 heat insulation film (the structure of the double-layer bubble type aluminum foil 2 heat insulation film is shown in figure 2).
Example 2
The production process disclosed in this example is substantially identical to that of example 1, except that: the mixture D consists of the component A and the component B according to the mass ratio of 1:2.
Example 3
The production process disclosed in this example is substantially identical to that of example 1, except that: the mixture D consists of the component A and the component B according to the mass ratio of 1:3.
Example 4
The production process disclosed in this example is substantially identical to that of example 1, except that: the component C adopts modified elastomer powder to replace thermoplastic elastomer.
The modified elastomer powder comprises 60 parts of thermoplastic elastomer, 6 parts of natural plant fiber powder and 0.1 part of auxiliary agent.
The auxiliary agent is one or more of antioxidant, anti-aging agent, slipping agent, ultraviolet absorber and compatilizer.
The antioxidant adopts antioxidant 1010 and antioxidant 168 to mix with antioxidant, and the anti-aging agent is 1 in mass ratio: 1, wherein the slipping agent is ethylene bis stearamide or oleamide, the ultraviolet absorbent is one of light stabilizer AM-101, light stabilizer 744, ultraviolet absorbent UV-531 and ultraviolet absorbent UVP-327, and the compatilizer is ethylene-methyl acrylate-glycidyl methacrylate terpolymer or maleic anhydride extension rod ethylene-polyethylene; the durability of the bubble film 1 is enhanced by adding the auxiliary agent, so that the bubble film 1 can be used outdoors as an outer layer, the requirements of oxidation resistance and ultraviolet resistance can be met, and the service life of the bubble film 1 is prolonged.
Example 5
The production process disclosed in this example is substantially identical to that of example 4, except that: the modified elastomer powder comprises 80 parts of thermoplastic elastomer, 20 parts of natural plant fiber powder and 0.5 part of auxiliary agent.
Comparative example 1
The production process used in this comparative example was substantially identical to that of example 1, except that: two layers of aluminum foil 2 are compounded on the two side surfaces of the single-layer bubble film 1.
Comparative example 2
The production process used in this comparative example was substantially identical to that of example 1, except that: the aluminum foil 2 and the bubble film 1 are subjected to hot pressing and compounding in a direct heating mode, and the heating temperature is 800-1000 ℃.
Comparative example 3
The production process used in this comparative example was substantially identical to that of example 1, except that: no ammonium polyphosphate or diethyl ethylphosphonate was added to the component A.
Comparative example 4
The production process used in this comparative example was substantially identical to that of example 1, except that: component A and component B are not added in the extrusion melting process of component C.
Performance testing
1. Waterproof test
(1) Evaluation index
Water absorption (%) = [ (wet mass-dry mass)/dry mass ] ×100%. The water absorption was used as an index for evaluating the water repellency.
The weight change before and after the water absorption of the sample shows the water absorption capacity of the double-layer bubble type aluminum foil heat insulation film material. The higher the water absorption, the poorer the water resistance of the material.
(2) Test protocol
The waterproof test is carried out by adopting a weight method. The waterproof test is a mode that a double-layer bubble type aluminum foil heat insulation film is adopted for the dipping test, and one side of the double-layer bubble type aluminum foil heat insulation film is contacted with water.
(1) The double-layer bubble type aluminum foil heat insulation film sample was taken in a size of 30cm×30cm, and placed in a dry environment.
(2) The samples were weighed individually using an MP4000B electronic balance, and the mass under dry conditions was weighed.
(3) A basin filled with water was prepared, the sample was immersed, the 4 corners of the sample were exposed, and after 3 hours, the sample was taken out and weighed.
(4) And calculating the water absorption by using a water absorption formula.
2. Mechanical Strength test
Taking a double-layer bubble type aluminum foil heat insulation film sample with length multiplied by width multiplied by 20cm multiplied by 10cm, adopting a WDWS-50 microcomputer control bidirectional electronic universal testing machine to test mechanical strength, and stretching at a speed of 60 mm/min. The maximum tensile force and elongation at break were recorded.
Each double-layer bubble type aluminum foil heat insulation film was tested 3 times and averaged.
Each double-layer bubble type aluminum foil heat insulation film was placed in a ventilation oven at 50 ℃ for 100 hours, and then tested 3 more times, and an average value was taken.
3. Flame retardant Performance test
The combustion performance of the sample was determined by reference to the method described in GB/T8333-2008 vertical Combustion method, test method for combustion performance of rigid foam.
The sample was fixed in a combustion box and ignited with a flame for 10s, and the burning time and the residual mass fraction of the sample were recorded.
The size of the double-layer bubble type aluminum foil heat insulation film sample is 10mm multiplied by 10mm, and the average value is obtained after the same double-layer bubble type aluminum foil heat insulation film sample is measured for 3 times.
Test results
Test pieces were prepared by using the production processes of examples 1 to 5 and comparative examples 1 to 3, respectively, and waterproof performance, mechanical strength and flame retardant performance were tested, respectively, and specific results are shown in Table 1.
TABLE 1 statistical table of performance test results
According to the results in table 1, the double-layer bubble type aluminum foil heat insulation film prepared by the invention has good waterproof property, mechanical strength and flame retardant property, has the effects of enhancing heat insulation and reducing noise, and meanwhile, the bubble film with hard foaming can keep bubbles from cracking under a certain pressure, so that the service life of the aluminum foil composite bubble film is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. A production process of a double-layer bubble type aluminum foil heat insulation film is characterized by comprising the following steps of: the method comprises the following steps:
step one, taking quantitative ammonium polyphosphate, diethyl ethylphosphonate, polyether polyol, a catalyst and water, and mechanically stirring uniformly to obtain a component A;
step two, taking quantitative polyisocyanate, diaminodiphenyl methane and phthalate, and mechanically stirring uniformly to obtain a component B;
step three, taking quantitative high-pressure polyethylene, linear polyethylene, modified elastomer powder, calcium carbonate, talcum powder and sodium bicarbonate, and mechanically stirring uniformly to obtain a component C;
step four, the component B is prepared according to the following steps (1-3): 1, rapidly adding the component A according to the mass ratio, and vigorously stirring the mixture by a stirrer to obtain a mixture D;
step five, preheating an extruder to 140-160 ℃, adding the component C under the stirring condition, then heating to 180-200 ℃, rapidly adding the mixture D into the extruder, preparing two base films through a die, and compounding one base film with the other base film into a whole after the other base film is subjected to film-forming foaming by vacuum molding on a vacuum roller to obtain a bubble film;
step six, repeating the step five to prepare another bubble film;
and step seven, carrying out hot pressing compounding on one side, close to each other, of the two bubble films and the surfaces of the two sides of the aluminum foil under the action of traction compounding equipment to obtain the double-layer bubble type aluminum foil heat insulation film.
2. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 1, which is characterized in that: in the first step, the mass ratio of the ammonium polyphosphate to the diethyl ethylphosphonate to the polyether polyol to the catalyst is 1:1:1.2:0.1, wherein the catalyst is one or a mixture of any two of triethylene diamine and N, N-dimethyl cyclohexylamine in a mass ratio.
3. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 1, which is characterized in that: in the second step, the mass ratio of the polyisocyanate, the diaminodiphenyl methane and the phthalate is 3:1:2.
4. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 1, which is characterized in that: in the third step, the mass ratio of the high-pressure polyethylene to the linear polyethylene to the modified elastomer powder to the calcium carbonate to the talcum powder to the sodium bicarbonate is 50:20:12:2:0.5:0.5.
5. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 4, which is characterized in that: the modified elastomer powder comprises 60-80 parts of thermoplastic elastomer, 6-20 parts of natural plant fiber powder and 0.1-0.5 part of auxiliary agent;
the thermoplastic elastomer is one or more of polyethylene, polypropylene, metallocene polyolefin elastomer, thermoplastic polyether ester, polyimide, thermoplastic polyurethane and nylon materials, and the auxiliary agent is one or more of antioxidant, anti-aging agent, slipping agent, ultraviolet absorbent and compatilizer.
6. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 4 or 5, wherein the production process comprises the following steps of: the preparation method of the modified elastic powder comprises the following steps:
(1) Adding the thermoplastic elastomer, the natural plant fiber powder and the auxiliary agent into a screw extruder, and heating, melting and extruding;
(2) And (3) cooling, fixing, crushing and grinding the extrudate, and sieving the extrudate with a 200-mesh sieve to obtain the modified elastic powder.
7. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 1, which is characterized in that: the hot-pressing compounding adopts a compounding roller of an electromagnetic induction heating device, and the electromagnetic induction heating device is utilized to heat the aluminum foil.
8. The production process of the double-layer bubble type aluminum foil heat insulation film according to claim 7, wherein the production process comprises the following steps: PE films are uniformly coated on the surfaces of two sides of the aluminum foil.
CN202310551560.5A 2023-05-17 2023-05-17 Production process of double-layer bubble type aluminum foil heat insulation film Active CN117698228B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104448484A (en) * 2014-11-25 2015-03-25 苏州九鼎珍珠棉有限公司 PE air bubble film, preparation method of PE air bubble film and air bubble film compound aluminum foil
CN204382736U (en) * 2014-12-31 2015-06-10 江苏中金玛泰医药包装有限公司 A kind of plastic-aluminum combined sealed membrane sealed with pet container
CN108621497A (en) * 2018-05-18 2018-10-09 浙江鹏远新材料股份有限公司 A kind of A grades of flame-retardant aluminium foil bubble insulating material and preparation method thereof
CN109897151A (en) * 2019-02-20 2019-06-18 张淼 A kind of preparation method of polyurethane resistance to compression foam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104448484A (en) * 2014-11-25 2015-03-25 苏州九鼎珍珠棉有限公司 PE air bubble film, preparation method of PE air bubble film and air bubble film compound aluminum foil
CN204382736U (en) * 2014-12-31 2015-06-10 江苏中金玛泰医药包装有限公司 A kind of plastic-aluminum combined sealed membrane sealed with pet container
CN108621497A (en) * 2018-05-18 2018-10-09 浙江鹏远新材料股份有限公司 A kind of A grades of flame-retardant aluminium foil bubble insulating material and preparation method thereof
CN109897151A (en) * 2019-02-20 2019-06-18 张淼 A kind of preparation method of polyurethane resistance to compression foam

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