CN116574293A - Dampproof heat-preserving PE bubble film and preparation method thereof - Google Patents
Dampproof heat-preserving PE bubble film and preparation method thereof Download PDFInfo
- Publication number
- CN116574293A CN116574293A CN202310544466.7A CN202310544466A CN116574293A CN 116574293 A CN116574293 A CN 116574293A CN 202310544466 A CN202310544466 A CN 202310544466A CN 116574293 A CN116574293 A CN 116574293A
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- CN
- China
- Prior art keywords
- film
- layer
- bubble
- insulating
- bubble film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 claims abstract description 69
- -1 polyethylene Polymers 0.000 claims abstract description 44
- 230000004888 barrier function Effects 0.000 claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000005416 organic matter Substances 0.000 claims abstract description 22
- 229920000573 polyethylene Polymers 0.000 claims abstract description 22
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 21
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 21
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 20
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 20
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 20
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 20
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 claims abstract description 12
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 239000003973 paint Substances 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 46
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 21
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 18
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 229920001903 high density polyethylene Polymers 0.000 claims description 14
- 239000004700 high-density polyethylene Substances 0.000 claims description 14
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 14
- 229920001684 low density polyethylene Polymers 0.000 claims description 14
- 239000004702 low-density polyethylene Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 12
- 239000004014 plasticizer Substances 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 12
- GEDVWGDBMPJNEV-UHFFFAOYSA-N 6-bromo-1h-benzimidazole Chemical compound BrC1=CC=C2N=CNC2=C1 GEDVWGDBMPJNEV-UHFFFAOYSA-N 0.000 claims description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 11
- 239000004202 carbamide Substances 0.000 claims description 11
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
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- 230000000007 visual effect Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 29
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 238000000071 blow moulding Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 description 8
- 230000000844 anti-bacterial effect Effects 0.000 description 7
- 238000004321 preservation Methods 0.000 description 6
- 238000010791 quenching Methods 0.000 description 6
- 238000007873 sieving Methods 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 6
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- 230000008859 change Effects 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- NXQMCAOPTPLPRL-UHFFFAOYSA-N 2-(2-benzoyloxyethoxy)ethyl benzoate Chemical group C=1C=CC=CC=1C(=O)OCCOCCOC(=O)C1=CC=CC=C1 NXQMCAOPTPLPRL-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical group CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 2
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 description 2
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- PTHCMJGKKRQCBF-UHFFFAOYSA-N Cellulose, microcrystalline Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC)C(CO)O1 PTHCMJGKKRQCBF-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000004965 Silica aerogel Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004347 surface barrier Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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Abstract
The application relates to the technical field of packaging materials, in particular to a dampproof heat-preserving PE bubble film and a preparation method thereof, and the method comprises the following processes: adding polyethylene and an auxiliary agent into a three-layer bubble film machine, extruding, blowing and forming a film to form a film; drawing, namely vacuum sucking a layer of film to form bubbles, respectively arranging a layer of film on the upper surface and the lower surface of the film, thermally compounding, and sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film; and (3) spraying the paint on the surface of the lower film layer, and drying to form a barrier layer to obtain the moistureproof heat-insulating PE bubble film. The composite aerogel prepared from the hydroxypropyl methyl cellulose, the methyl orthosilicate, the benzimidazole siloxane and the copper acetate has a porous structure and good mechanical property, is used as a metal coordination organic matter to be matched with the polyvinyl alcohol to prepare the barrier layer, improves the moistureproof and heat-insulating capabilities of the moistureproof heat-insulating PE bubble film, and has a certain transparent visual capability.
Description
Technical Field
The application relates to the technical field of packaging materials, in particular to a moistureproof heat-insulating PE bubble film and a preparation method thereof.
Background
In packaging materials, bubble films are widely used in various industries and play an important role. The bubble film structure is provided with a layer of air bubbles, so that the impact extrusion of the outside can be prevented, and the shock absorption and buffering effects are achieved. The bubble film is generally prepared by processing polyethylene resin, has good barrier property to external water vapor, and is not easy to lose water vapor in the package. Because the heat insulation capability of the bubble film is poor, the bubble film is influenced by the external temperature and the relative humidity, the water content in the package is easy to change, and the relative humidity of the commodity is influenced. When the change range is larger and the relative humidity exceeds the safety of commodities for too long, the conditions such as rust, mildew and deterioration of commodities can be caused. Therefore, we propose a dampproof heat preservation PE bubble film and a preparation method thereof.
Disclosure of Invention
The application aims to provide a moistureproof heat-insulating PE bubble film and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme: the utility model provides a dampproofing heat preservation PE bubble membrane, includes bubble membrane and coating at the separation layer of bubble membrane surface, the bubble membrane includes from top to bottom in proper order: the barrier layer is coated on the surface of the lower film layer.
Further, the bubble film is prepared from polyethylene and an auxiliary agent;
the polyethylene includes low density polyethylene, high density polyethylene, linear low density polyethylene and polyethylene wax.
Further, the mass ratio of the low density polyethylene to the high density polyethylene to the linear low density polyethylene to the polyethylene wax is 10 (3-5): 3-7): 0.2-2.0.
Further, the mass of the auxiliary agent is 3.2-8.8% of the mass of the polyethylene.
Further, the auxiliary agent comprises an opening agent, a plasticizer and an antioxidant.
Low density polyethylene: 1C7A is from the company of petrifaction, the melting point is 7.0g/10min;
high density polyethylene: DMDA-8008, from the petrochemical company of Dushan mountain, xinjiang, with a melt index of 7.7g/10min;
linear low density polyethylene: 1802, derived from petrochemical company, gmbH, of China with a melting point of 2.0g/10min;
polyethylene wax: SX-100B is derived from the company of petrochemical industry, yanshan petrochemical industry, china;
the opening agent is oleamide; the plasticizer is diethylene glycol dibenzoate; the antioxidant is antioxidant 300.
A preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film: adding polyethylene and an auxiliary agent into a three-layer bubble film machine, extruding, blowing and forming a film to form a film; drawing, namely vacuum sucking a layer of film to form bubbles, respectively arranging a layer of film on the upper surface and the lower surface of the film, thermally compounding, and sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer: and (3) spraying the coating at 50-60 ℃ on the surface of the lower film layer, and drying for 2 hours at 50-60 ℃ to form a barrier layer, thereby obtaining the moistureproof heat-insulating PE bubble film.
Further, the extrusion process: the temperature of the feeding section is 140-150 ℃, the plasticizing section is 200-210 ℃, and the homogenizing section is 210-230 ℃;
160-180 ℃ of a molding die and a machine barrel connecting section, 160-170 ℃ of the molding die;
the vacuum degree of the vacuum suction is 0.03-0.05 Mpa;
the thermal compounding temperature is 115-125 ℃.
Further, the thickness of the film was 50. Mu.m;
the diameter of the bubble is 6-10 mm, and the height is 3-5 mm;
the thickness of the barrier layer is 30-50 μm.
Further, the coating comprises the following components in parts by mass: 10 to 12 parts of polyvinyl alcohol, 2.0 to 2.4 parts of metal coordination organic matter, 0.5 to 1.2 parts of stabilizer and 83 to 88 parts of distilled water.
Further, the coating is prepared by the following process:
(1) Preparation of metal coordination organic matter:
taking butanol, adding KH-540, 5-bromo-1H-benzimidazole and triethylamine, stirring and mixing for 10-20 min, heating to 70-100 ℃, and reacting for 4-13H; adding sodium bicarbonate solution for quenching reaction, washing and drying to obtain benzimidazole siloxane;
mixing urea, hexadecyl trimethyl ammonium chloride and acetic acid solution, adding methyl orthosilicate and benzimidazole siloxane, and stirring for 15-30 min; then reacting for 10-15 h at 75-85 ℃; adding hydroxypropyl methyl cellulose solution, stirring for 10-20 min, and continuing to react for 9-15 h;
cooling to 50-70 ℃, adding copper acetate solution, and stirring for 10-15 h;
cooling to 22-28 ℃, sequentially replacing with absolute ethyl alcohol, ethyl acetate and normal hexane, replacing each solvent twice for 6-8 h, drying at 108-115 ℃ under normal pressure for 10-20 min, vacuum drying at 100 ℃ for 24h, grinding and crushing into powder, and sieving with a 800-mesh sieve to obtain the metal coordination organic matter.
(2) Preparation of the coating:
taking polyvinyl alcohol, stirring and swelling in distilled water at 90-95 ℃ for 100-150 min at the stirring speed of 800r/min; cooling to 60-80 ℃, adding a stabilizer and a metal coordination organic matter, and stirring for 8-12 h to obtain the coating.
Further, the mass ratio of KH-540 to 5-bromo-1H-benzimidazole to triethylamine is 100 (126.4-138.4) (67.6-84.5);
KH-540, butanol and sodium bicarbonate solution with the ratio of 10-20 g to 100mL to 100-200 mL;
the concentration of sodium bicarbonate solution was 1M.
Further, the metal coordination organic matter is prepared from the following components in parts by mass: 10 parts of urea, 1.5 to 1.8 parts of hexadecyl trimethyl ammonium chloride, 4.7 to 7.8 parts of hydroxypropyl methyl cellulose, 1.6 to 3.1 parts of methyl orthosilicate, 0.8 to 1.5 parts of benzimidazole siloxane and 0.5 to 0.8 part of copper acetate;
the concentration of the acetic acid solution is 0.608mg/L; the ratio of urea to acetic acid solution is 1g to 3mL;
the concentration of the hydroxypropyl methylcellulose solution was 10wt%; the concentration of the copper acetate solution was 10wt%.
Polyvinyl alcohol: 1799 and is available from Shanghai fine analysis chemical technology Co., ltd;
hydroxypropyl methylcellulose: from yoku city, gold and reputation chemical company, ltd.
Further, the mass of the polyvinyl alcohol is 12.0 to 13.6 percent of distilled water;
the stabilizer is n-butanol, and the mass is 5-10% of the mass of the polyvinyl alcohol.
In the technical scheme, KH-540 reacts with 5-bromo-1H-benzimidazole in the presence of an acid-binding agent triethylamine, and amino on KH-540 reacts with bromo in 5-bromo-1H-benzimidazole, so that siloxane (benzimidazole siloxane) with benzimidazole is obtained; then, in the mixed solution of urea, cetyl trimethyl ammonium chloride and acetic acid solution, the mixed solution is hydrolyzed together with methyl orthosilicate, and is subjected to polycondensation, and the mixed solution reacts with hydroxyl in hydroxypropyl methyl cellulose to obtain a compound system of hydroxypropyl methyl cellulose gel and silica sol; after solvent replacement and normal-pressure drying in the subsequent process, the silica sol forms silica aerogel. Before solvent replacement, copper acetate is added into the system after cooling, wherein copper ions can coordinate with imidazole groups in benzimidazole siloxane and residual hydroxyl groups in hydroxypropyl methyl cellulose to form a stable three-dimensional crosslinking structure, so that intramolecular crosslinking is promoted, the formation of composite gel is facilitated, and the crosslinking and gelation between cellulose gel and silica sol are realized. Finally, the cellulose aerogel and the silicon dioxide aerogel are subjected to solvent replacement and normal pressure drying to form a metal coordination cross-linked composite system, namely a metal coordination organic matter.
The application adopts the polyvinyl alcohol as the main component of the surface barrier layer of the bubble film, has the moisture absorption capability, can absorb the water vapor in the prepared packaging material (the moisture-proof heat-preservation PE bubble film, the same applies below), avoids the change of the water content in the package, maintains the safe relative humidity of the commodity in the package, and ensures the safety of the commodity quality. The prepared metal coordination organic matter is porous and is added into the polyvinyl alcohol, so that the heat transfer of the prepared packaging material can be slowed down, and the moisture-proof heat-insulation PE bubble film heat-insulation capability is endowed to the bubble film, and meanwhile, the larger change of the temperature in the package is further avoided; the change of the water content in the packaging material caused by temperature is relieved, and the safe water content of the internal commodity is maintained.
The metal coordination organic matters obtained through crosslinking of the two aerogels through metal coordination have good mechanical properties, the compression resistance is improved, the hydroxypropyl methyl cellulose in the system absorbs moisture to cause the closure of the porous structure of the metal coordination organic matters to be relieved, and the prepared barrier layer can still keep good heat preservation capacity after absorbing moisture; and the cushioning capacity of the packaging material can be improved to a certain extent. The metallic copper ions introduced by the metal coordination organic matters can endow the barrier layer with antibacterial performance, so that bacteria in the packaging material can be prevented from breeding, and the clean environment of the commodity can be maintained. And the hydroxypropyl methylcellulose and the polyvinyl alcohol in the material of the barrier layer have good compatibility, the intermolecular hydrogen bond acting force in the system is enhanced, the compactness of the barrier layer is improved, and the moistureproof and heat preservation capability of the barrier layer is further improved.
The prepared barrier layer also has better transparency, and cooperates with the high-transparency bubble film, so that the moistureproof and heat-insulating PE bubble film has certain transparent visual capability while keeping moistureproof and heat-insulating capability, and is more beneficial to the application of the PE bubble film in the field of high-end packaging materials.
Compared with the prior art, the application has the following beneficial effects:
according to the moistureproof heat-insulating PE bubble film and the preparation method thereof, the composite aerogel prepared from the hydroxypropyl methyl cellulose, the methyl orthosilicate, the benzimidazole siloxane and the copper acetate has a porous structure and good mechanical property, is used as a metal coordination organic matter to be matched with the polyvinyl alcohol to prepare the barrier layer, so that the moistureproof and heat-insulating capabilities of the moistureproof heat-insulating PE bubble film are improved, and the moistureproof heat-insulating PE bubble film has a certain transparent visual capability.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the following embodiments:
low density polyethylene: 1C7A is from the company of petrifaction, the melting point is 7.0g/10min;
high density polyethylene: DMDA-8008, from the petrochemical company of Dushan mountain, xinjiang, with a melt index of 7.7g/10min;
linear low density polyethylene: 1802, derived from petrochemical company, gmbH, of China with a melting point of 2.0g/10min;
polyethylene wax: SX-100B is derived from the company of petrochemical industry, yanshan petrochemical industry, china;
the opening agent is oleamide; the plasticizer is diethylene glycol dibenzoate; the antioxidant is antioxidant 300;
polyvinyl alcohol: 1799 and is available from Shanghai fine analysis chemical technology Co., ltd;
hydroxypropyl methylcellulose: from the chemical industry limited company of the Jinyu of the Yingchu city;
the "parts" number represents 100g.
Example 1: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 100mL of butanol, adding 10gKH-540 g of 5-bromo-1H-benzimidazole and 6.8g of triethylamine, stirring and mixing for 10min, heating to 70 ℃, and reacting for 4H; adding 100mL of 1M sodium bicarbonate solution to quench the reaction, washing and drying to obtain benzimidazole siloxane;
10g of urea, 1.5g of hexadecyl trimethyl ammonium chloride and 30mL of 0.608mg/L acetic acid solution are taken and mixed, 1.6g of methyl orthosilicate and 0.8g of benzimidazole siloxane are added, and stirring is carried out for 15min; then reacting for 10 hours at the temperature of 75 ℃; 48mL of 10wt% hydroxypropyl methyl cellulose solution is added, and the mixture is stirred for 10min and continuously reacted for 9h;
cooling to 50 ℃, adding 5mL of 10wt% copper acetate solution, and stirring for 10 hours;
cooling to 22deg.C, sequentially substituting with absolute ethanol, ethyl acetate and n-hexane, substituting each solvent for two times for 6 hr, drying at 108deg.C under normal pressure for 10min, vacuum drying at 100deg.C for 24 hr, grinding, pulverizing into powder, and sieving with 800 mesh sieve to obtain metal coordination organic matter;
taking 100g of polyvinyl alcohol, stirring and swelling in 84mL of distilled water at 90 ℃ for 100min at a stirring rotating speed of 800r/min; cooling to 60 ℃, adding 5g of stabilizer and 20g of metal coordination organic matter, and stirring for 8 hours to obtain a coating;
and (3) spraying a coating at 50 ℃ on the surface of the lower film layer, and drying for 2 hours at 50 ℃ to form a barrier layer, wherein the thickness of the barrier layer is 30 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Example 2: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 20 parts of high-density polyethylene, 25 parts of linear low-density polyethylene, 5 parts of polyethylene wax, 1.7 parts of opening agent, 2.8 parts of plasticizer and 1.7 parts of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 145 ℃, the temperature of a plasticizing section is 205 ℃, and the temperature of a homogenizing section is 220 ℃; the connection section of the forming die and the machine barrel is 170 ℃, and the forming die is 165 ℃; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.04Mpa, the diameter of the bubbles is 8mm, and the height of the bubbles is 4mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at 120 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 75mL of butanol, adding 10gKH-540 g of 5-bromo-1H-benzimidazole and 7.6g of triethylamine, stirring and mixing for 15min, heating to 85 ℃, and reacting for 9H; adding 100mL of 1M sodium bicarbonate solution to quench the reaction, washing and drying to obtain benzimidazole siloxane;
10g of urea, 1.6g of hexadecyl trimethyl ammonium chloride and 30mL of 0.608mg/L acetic acid solution are taken and mixed, 2.3g of methyl orthosilicate and 1.2g of benzimidazole siloxane are added, and stirring is carried out for 25min; then reacting for 12 hours at the temperature of 80 ℃; 63mL of 10wt% hydroxypropyl methylcellulose solution is added, stirred for 15min, and the reaction is continued for 12h;
cooling to 0 ℃, adding 6mL of 10wt% copper acetate solution, and stirring for 12h;
cooling to 25deg.C, sequentially substituting with absolute ethanol, ethyl acetate and n-hexane, substituting each solvent for two times for 7 hr, drying at 110deg.C under normal pressure for 15min, vacuum drying at 100deg.C for 24 hr, grinding, pulverizing into powder, and sieving with 800 mesh sieve to obtain metal coordination organic matter;
110g of polyvinyl alcohol is taken and is stirred and swelled for 120min in 86mL of distilled water at 92 ℃ with the stirring rotation speed of 800r/min; cooling to 70 ℃, adding 8.5g of stabilizer and 2.2g of metal coordination organic matter, and stirring for 10 hours to obtain a coating;
and (3) spraying a coating at 55 ℃ on the surface of the lower film layer, and drying at 55 ℃ for 2 hours to form a barrier layer, wherein the thickness of the barrier layer is 40 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Example 3: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 25 parts of high-density polyethylene, 35 parts of linear low-density polyethylene, 10 parts of polyethylene wax, 2.4 parts of opening agent, 4.8 parts of plasticizer and 2.4 parts of antioxidant are taken, and are added into a three-layer bubble film machine for extrusion, the temperature of a feeding section is 150 ℃, the temperature of a plasticizing section is 210 ℃, and the temperature of a homogenizing section is 230 ℃; 180 ℃ of a connecting section of a forming die and a machine barrel, and 170 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.05Mpa, the diameter of the bubbles is 10mm, and the height of the bubbles is 5mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 125 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
50mL of butanol is taken, 10gKH-540 g of 5-bromo-1H-benzimidazole and 8.45g of triethylamine are added, stirred and mixed for 20min, the temperature is raised to 100 ℃ and the reaction is carried out for 4 to 13H; adding 100mL of 1M sodium bicarbonate solution to quench the reaction, washing and drying to obtain benzimidazole siloxane;
10g of urea, 1.8g of hexadecyl trimethyl ammonium chloride and 30mL of 0.608mg/L acetic acid solution are taken and mixed, 3.1g of methyl orthosilicate and 1.5g of benzimidazole siloxane are added, and stirring is carried out for 30min; then reacting for 15h at the temperature of 85 ℃; 78mL of 10wt% hydroxypropyl methylcellulose solution is added, and the mixture is stirred for 20min and continuously reacted for 15h;
cooling to 70 ℃, adding 8mL of 10wt% copper acetate solution, and stirring for 15h;
cooling to 28deg.C, sequentially substituting with absolute ethanol, ethyl acetate and n-hexane, substituting each solvent twice for 8 hr, drying at 115deg.C under normal pressure for 20min, vacuum drying at 100deg.C for 24 hr, grinding, pulverizing into powder, and sieving with 800 mesh sieve to obtain metal coordination organic matter;
taking 120g of polyvinyl alcohol, stirring and swelling in 883mL of distilled water at 95 ℃ for 150min, and stirring at a rotating speed of 800r/min; cooling to 80 ℃, adding 12g of stabilizer and 24g of metal coordination organic matter, and stirring for 12 hours to obtain a coating;
and (3) spraying a coating at 60 ℃ on the surface of the lower film layer, and drying at 60 ℃ for 2 hours to form a barrier layer, wherein the thickness of the barrier layer is 50 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Comparative example 1: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 100mL of butanol, adding 10gKH-540 g of 5-bromo-1H-benzimidazole and 6.8g of triethylamine, stirring and mixing for 10min, heating to 70 ℃, and reacting for 4H; adding 100mL of 1M sodium bicarbonate solution to quench the reaction, washing and drying to obtain benzimidazole siloxane;
10g of urea, 1.5g of hexadecyl trimethyl ammonium chloride and 30mL of 0.608mg/L acetic acid solution are taken and mixed, 1.6g of methyl orthosilicate and 0.8g of benzimidazole siloxane are added, and stirring is carried out for 15min; then reacting for 10 hours at the temperature of 75 ℃; 48mL of 10wt% hydroxypropyl methyl cellulose solution is added, and the mixture is stirred for 10min and continuously reacted for 9h;
cooling to 22deg.C, sequentially substituting with absolute ethanol, ethyl acetate and n-hexane, substituting each solvent twice for 6 hr, drying at 108deg.C under normal pressure for 10min, vacuum drying at 100deg.C for 24 hr, grinding, pulverizing into powder, and sieving with 800 mesh sieve to obtain organic matter;
taking 100g of polyvinyl alcohol, stirring and swelling in 84mL of distilled water at 90 ℃ for 100min at a stirring rotating speed of 800r/min; cooling to 60 ℃, adding 5g of stabilizer and 20g of organic matters, and stirring for 8 hours to obtain a coating;
and (3) spraying a coating at 50 ℃ on the surface of the lower film layer, and drying for 2 hours at 50 ℃ to form a barrier layer, wherein the thickness of the barrier layer is 30 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Comparative example 2: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 100mL of butanol, adding 10gKH-540 g of 5-bromo-1H-benzimidazole and 6.8g of triethylamine, stirring and mixing for 10min, heating to 70 ℃, and reacting for 4H; adding 100mL of 1M sodium bicarbonate solution to quench the reaction, washing and drying to obtain benzimidazole siloxane;
10g of urea, 1.5g of hexadecyl trimethyl ammonium chloride and 30mL of 0.608mg/L acetic acid solution are taken and mixed, 1.6g of methyl orthosilicate and 0.8g of benzimidazole siloxane are added, and stirring is carried out for 15min; then reacting for 24 hours at the temperature of 75 ℃;
cooling to 22deg.C, sequentially substituting with absolute ethanol, ethyl acetate and n-hexane, substituting each solvent twice for 6 hr, drying at 108deg.C under normal pressure for 10min, vacuum drying at 100deg.C for 24 hr, grinding, pulverizing into powder, and sieving with 800 mesh sieve to obtain the product;
taking 100g of polyvinyl alcohol, stirring and swelling in 84mL of distilled water at 90 ℃ for 100min at a stirring rotating speed of 800r/min; cooling to 60 ℃, adding 5g of stabilizer and 20g of product, and stirring for 8 hours to obtain a coating;
and (3) spraying a coating at 50 ℃ on the surface of the lower film layer, and drying for 2 hours at 50 ℃ to form a barrier layer, wherein the thickness of the barrier layer is 30 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Comparative example 3: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 100g of polyvinyl alcohol, stirring and swelling in 84mL of distilled water at 90 ℃ for 100min at a stirring rotating speed of 800r/min; cooling to 60 ℃, adding 5g of stabilizer and 20g of hydroxypropyl methylcellulose, and stirring for 8 hours to obtain the coating;
and (3) spraying a coating at 50 ℃ on the surface of the lower film layer, and drying for 2 hours at 50 ℃ to form a barrier layer, wherein the thickness of the barrier layer is 30 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Comparative example 4: a preparation method of a moistureproof heat-insulating PE bubble film comprises the following steps:
step 1, preparing a bubble film:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer:
taking 100g of polyvinyl alcohol, stirring and swelling in 84mL of distilled water at 90 ℃ for 100min at a stirring rotating speed of 800r/min; cooling to 60 ℃, adding 5g of stabilizer, and stirring for 8 hours to obtain a coating;
and (3) spraying a coating at 50 ℃ on the surface of the lower film layer, and drying for 2 hours at 50 ℃ to form a barrier layer, wherein the thickness of the barrier layer is 30 mu m, so that the moistureproof heat-insulating PE bubble film is obtained.
Comparative example 5: the preparation method of the bubble film comprises the following steps:
50 parts of low-density polyethylene, 15 parts of high-density polyethylene, 15 parts of linear low-density polyethylene, 1.0 part of polyethylene wax, 1.0 part of opening agent, 1.6 parts of plasticizer and 1.0 part of antioxidant are taken, added into a three-layer bubble film machine, extruded, and the temperature of a feeding section is 140 ℃, the temperature of a plasticizing section is 200 ℃, and the temperature of a homogenizing section is 210 ℃; 160 ℃ of a connecting section of a forming die and a machine barrel, and 160 ℃ of the forming die; forming a film by blow molding to form a film with a thickness of 50 mu m; drawing, namely vacuum sucking a layer of film to form bubbles, wherein the vacuum degree is 0.03Mpa, the diameter of the bubbles is 6mm, and the height of the bubbles is 3mm; a layer of film is respectively arranged on the upper surface and the lower surface of the film, and the film is thermally compounded at the temperature of 115 ℃; and forming an upper film layer, a bubble layer and a lower film layer from top to bottom in sequence to obtain the bubble film.
Experiment: samples were prepared from the moisture-proof heat-insulating PE bubble films obtained in examples 1 to 3 and comparative examples 1 to 5 and the bubble film in comparative example 5, and the properties thereof were measured and the measurement results were recorded, respectively:
moisture resistance: taking ASTM E96-05 as a reference standard, adopting a moisture permeability meter to detect the water vapor transmittance of a sample from the upper film layer as a performance index, contacting the upper film layer with a moisture permeable cup, wherein the permeation humidity is 100%, the experimental temperature is 38 ℃, and the humidity of the drying side is 10%;
moisture absorption capacity: the ASTM E96-05 is used as a reference standard, the barrier layer is in contact with the moisture permeable cup, the permeation humidity is 100%, the experimental temperature is 38 ℃, the humidity on the drying side is 10%, and the humidity in the moisture permeable cup after 24 hours of experiment is used as a performance index;
thermal insulation capability: a thermal constant analyzer is adopted to test the thermal conductivity of the sample and serve as an indicator of heat preservation capability;
antibacterial ability: sterilizing 8mm diameter film for 1 hr by antibacterial zone method, sucking and coating 100 μl of film with concentration of 2×10 7 E.coli of CFU/mL is placed in a culture medium for culturing for 24 hours at 37 ℃, and the antibacterial diameter minus the diameter of the sample is recorded as the diameter of the antibacterial circle and is used as an antibacterial capacity index.
From the data in the above table, the following conclusions can be clearly drawn:
the moisture-proof and heat-insulating PE bubble films obtained in examples 1 to 3 were compared with those obtained in comparative examples 1 to 5, and the results of the detection revealed,
compared with the comparative examples, the moistureproof heat-insulating PE bubble film obtained in examples 1-3 has lower data of water vapor transmittance, humidity and heat conductivity and higher data of the diameter of the inhibition zone. This fully illustrates that the application realizes the improvement of the moistureproof, hygroscopic and heat-insulating capabilities of the prepared moistureproof heat-insulating PE bubble film.
Compared with example 1, the metal coordination organic matter in comparative example 1 has no copper acetate added, the crosslinking of the metal coordination organic matter is reduced, and the intermolecular force between the metal coordination organic matter and the polyvinyl alcohol is enhanced; comparative example 2 metal complex organics were replaced; comparative example 3 the metal-coordinated organic was replaced with hydroxypropyl methylcellulose of equal mass; no metal coordinating organics were added to the barrier layer of comparative example 4; comparative example 5 was not provided with a barrier layer; the data of the water vapor transmittance, the humidity and the heat conductivity are raised, and the antibacterial diameter is not changed obviously; it can be seen that the moisture-proof and heat-insulating PE bubble film component and the process thereof can improve the moisture-proof, moisture-absorbing and heat-insulating capacities.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process method article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process method article or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A preparation method of a moistureproof heat-insulating PE bubble film is characterized by comprising the following steps: the method comprises the following steps:
step 1, preparing a bubble film: adding polyethylene and an auxiliary agent into a three-layer bubble film machine, extruding, blowing and forming a film to form a film; drawing, namely vacuum sucking a layer of film to form bubbles, respectively arranging a layer of film on the upper surface and the lower surface of the film, thermally compounding, and sequentially forming an upper film layer, a bubble layer and a lower film layer from top to bottom to obtain a bubble film;
step 2, setting a barrier layer: spraying a coating at 50-60 ℃ on the surface of the lower film layer, and drying for 2 hours at 50-60 ℃ to form a barrier layer, thereby obtaining a moistureproof heat-insulating PE bubble film;
the coating comprises the following components in parts by mass: 10 to 12 parts of polyvinyl alcohol, 2.0 to 2.4 parts of metal coordination organic matter, 0.5 to 1.2 parts of stabilizer and 83 to 88 parts of distilled water.
2. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 1, which is characterized in that: the paint is prepared by the following process:
taking butanol, adding KH-540, 5-bromo-1H-benzimidazole and triethylamine, stirring and mixing for 10-20 min, heating to 70-100 ℃, and reacting for 4-13H to obtain benzimidazole siloxane;
mixing urea, hexadecyl trimethyl ammonium chloride and acetic acid solution, adding methyl orthosilicate and benzimidazole siloxane, and stirring for 15-30 min; then reacting for 10-15 h at 75-85 ℃; adding hydroxypropyl methyl cellulose solution, stirring for 10-20 min, and continuing to react for 9-15 h;
cooling to 50-70 ℃, adding copper acetate solution, and stirring for 10-15 h;
cooling to 22-28 ℃, sequentially replacing with absolute ethyl alcohol, ethyl acetate and normal hexane, replacing each solvent twice for 6-8 hours, drying at 108-115 ℃ under normal pressure for 10-20 min, drying at 100 ℃ under vacuum for 24 hours, grinding and crushing into powder to obtain metal coordination organic matters;
taking polyvinyl alcohol, stirring and swelling in distilled water at 90-95 ℃ for 100-150 min at the stirring speed of 800r/min; cooling to 60-80 ℃, adding a stabilizer and a metal coordination organic matter, and stirring for 8-12 h to obtain the coating.
3. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 2, which is characterized in that: the metal coordination organic matter is prepared from the following components in parts by mass: 10 parts of urea, 1.5 to 1.8 parts of hexadecyl trimethyl ammonium chloride, 4.7 to 7.8 parts of hydroxypropyl methyl cellulose, 1.6 to 3.1 parts of methyl orthosilicate, 0.8 to 1.5 parts of benzimidazole siloxane and 0.5 to 0.8 part of copper acetate.
4. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 2, which is characterized in that: the mass ratio of KH-540 to 5-bromo-1H-benzimidazole to triethylamine is 100 (126.4-138.4) (67.6-84.5).
5. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 1, which is characterized in that: the extrusion process in the step 1 is that the temperature of a feeding section is 140-150 ℃, the temperature of a plasticizing section is 200-210 ℃, and the temperature of a homogenizing section is 210-230 ℃;
the vacuum degree of the vacuum suction is 0.03-0.05 Mpa;
the thermal compounding temperature is 115-125 ℃.
6. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 2, which is characterized in that: the polyethylene includes low density polyethylene, high density polyethylene, linear low density polyethylene and polyethylene wax.
7. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 6, which is characterized in that: the mass ratio of the low-density polyethylene to the high-density polyethylene to the linear low-density polyethylene to the polyethylene wax is 10 (3-5): 3-7): 0.2-2.0.
8. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 1, which is characterized in that: the mass of the auxiliary agent is 3.2-8.8% of the mass of the polyethylene.
9. The method for preparing the moistureproof heat-insulating PE bubble film according to claim 1, which is characterized in that: the auxiliary agent comprises an opening agent, a plasticizer and an antioxidant.
10. A moisture-proof insulation PE bubble film produced by the production method according to any one of claims 1 to 9.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386183A (en) * | 1981-04-16 | 1983-05-31 | Air Products And Chemicals, Inc. | Release coatings based on polyvinyl alcohol |
| CN101535421A (en) * | 2006-10-26 | 2009-09-16 | 巴斯夫公司 | Method of producing a coating having metal coordinating and film-forming materials |
| CN104972669A (en) * | 2015-03-29 | 2015-10-14 | 安徽松泰包装材料有限公司 | Production technology for air bubble film |
| CN105459375A (en) * | 2015-11-23 | 2016-04-06 | 安徽松泰包装材料有限公司 | Manufacturing technology for air bubble film |
| CN113637249A (en) * | 2021-07-19 | 2021-11-12 | 冷水江三A新材料科技有限公司 | Plastic bubble film with good sound and heat insulation effects |
-
2023
- 2023-05-16 CN CN202310544466.7A patent/CN116574293B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386183A (en) * | 1981-04-16 | 1983-05-31 | Air Products And Chemicals, Inc. | Release coatings based on polyvinyl alcohol |
| CN101535421A (en) * | 2006-10-26 | 2009-09-16 | 巴斯夫公司 | Method of producing a coating having metal coordinating and film-forming materials |
| CN104972669A (en) * | 2015-03-29 | 2015-10-14 | 安徽松泰包装材料有限公司 | Production technology for air bubble film |
| CN105459375A (en) * | 2015-11-23 | 2016-04-06 | 安徽松泰包装材料有限公司 | Manufacturing technology for air bubble film |
| CN113637249A (en) * | 2021-07-19 | 2021-11-12 | 冷水江三A新材料科技有限公司 | Plastic bubble film with good sound and heat insulation effects |
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