CN115895085A - Method for production process of PE (polyethylene) winding film - Google Patents
Method for production process of PE (polyethylene) winding film Download PDFInfo
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- CN115895085A CN115895085A CN202211468592.0A CN202211468592A CN115895085A CN 115895085 A CN115895085 A CN 115895085A CN 202211468592 A CN202211468592 A CN 202211468592A CN 115895085 A CN115895085 A CN 115895085A
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 100
- 238000004804 winding Methods 0.000 title claims abstract description 61
- -1 polyethylene Polymers 0.000 title claims abstract description 47
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 34
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 21
- 239000004611 light stabiliser Substances 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 16
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 239000012745 toughening agent Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 12
- RXUWDKBZZLIASQ-UHFFFAOYSA-N Puerarin Natural products OCC1OC(Oc2c(O)cc(O)c3C(=O)C(=COc23)c4ccc(O)cc4)C(O)C(O)C1O RXUWDKBZZLIASQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims abstract description 11
- HKEAFJYKMMKDOR-VPRICQMDSA-N puerarin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1C1=C(O)C=CC(C2=O)=C1OC=C2C1=CC=C(O)C=C1 HKEAFJYKMMKDOR-VPRICQMDSA-N 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 239000004945 silicone rubber Substances 0.000 claims abstract description 11
- BEIOEBMXPVYLRY-UHFFFAOYSA-N [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(C=1C=CC(=CC=1)C=1C=CC(=CC=1)P(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C BEIOEBMXPVYLRY-UHFFFAOYSA-N 0.000 claims abstract description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 6
- 239000008116 calcium stearate Substances 0.000 claims abstract description 6
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 239000000284 extract Substances 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 12
- KMZHZAAOEWVPSE-UHFFFAOYSA-N 2,3-dihydroxypropyl acetate Chemical compound CC(=O)OCC(O)CO KMZHZAAOEWVPSE-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- IYAZLDLPUNDVAG-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol Chemical group CC(C)(C)CC(C)(C)C1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 IYAZLDLPUNDVAG-UHFFFAOYSA-N 0.000 claims description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000005662 Paraffin oil Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920002367 Polyisobutene Polymers 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- 230000003064 anti-oxidating effect Effects 0.000 claims description 5
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 5
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 5
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 5
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 5
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 claims description 5
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 5
- 239000008158 vegetable oil Substances 0.000 claims description 5
- 239000008517 radix Trichosanthis Substances 0.000 claims description 4
- 210000000582 semen Anatomy 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical class OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 206010051246 Photodermatosis Diseases 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000008845 photoaging Effects 0.000 description 3
- 238000006552 photochemical reaction Methods 0.000 description 3
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 3
- 241000353135 Psenopsis anomala Species 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 244000294611 Punica granatum Species 0.000 description 1
- 235000014360 Punica granatum Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Abstract
The invention discloses a method for a PE (polyethylene) winding film production process, which relates to the technical field of winding films, and the PE winding film comprises the following raw materials in parts by mass: 50-80 parts of modified polyethylene, 2-8 parts of graphene fiber, 2-14 parts of silicon dioxide, 20-30 parts of methyl vinyl silicone rubber, 5-30 parts of linear low density polyethylene, 0.2-1 part of stabilizer, 0.1-1 part of antioxidant, 0.1-1 part of light stabilizer, 0.1-7 parts of tackifier, 0.2-1 part of toughening agent and 0.1-1 part of flame retardant, wherein the modified polyethylene is prepared by adopting the following method: the method comprises the steps of stirring and mixing puerarin powder, PEPQ, absolute ethyl alcohol and polyethylene in a three-necked bottle for 4-6 hours, evaporating the absolute ethyl alcohol to obtain polyethylene powder, drying the polyethylene powder in a drying box at 70 ℃, adding calcium stearate, and uniformly mixing.
Description
Technical Field
The invention relates to the technical field of winding films, in particular to a method for a production process of a PE winding film.
Background
The PE winding film is made of transparent thermoplastic plastics, has the characteristics of softness, toughness, impact resistance and high breakage and shrinkage rate, is often used for wrapping objects into a whole, particularly for packaging irregular articles or commodities, prevents the irregular articles or the commodities from collapsing and scattering during transportation, has high light transmittance, increases the attractive appearance of the product, invisibly publicizes the product, and can reduce distribution errors in a logistics distribution link.
The PE winding film is divided into two series of manual winding films and machine winding films, various specifications can be cut on line according to the size of a product, a whitening agent is usually added during production of the PE winding film, the PE winding film produced by a single-layer extrusion process and a multi-layer extrusion process is high in transparency, or methyl cellulose is added into the PE winding film to enable the PE winding film to have good tensile strength, the existing PE winding film has some defects in some aspects and needs to be further improved, the existing PE winding film often has a peculiar smell during use, the peculiar smell is remained during packing of drinks and beverages, the sales volume of the drinks, the beverages and other commodities is reduced, in addition, the PE winding film is exposed to the sun for a long time to reduce the service life, and the PE winding film is broken to cause packed articles or commodities to be scattered and damaged.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for producing a PE winding film, wherein a light stabilizer is added into raw materials of the PE winding film, so that the possibility of photochemical reaction on the winding film under the irradiation of light by ultraviolet rays can be eliminated and slowed down, and the process of photo-aging is prevented or delayed, thereby prolonging the service life of the PE winding film, meanwhile, the PE winding film has high tensile strength, is difficult to burn when exposed fire occurs, has a certain fireproof effect, reduces the occurrence of potential safety hazards, has good bonding force and easy stripping performance by adding a tackifier, and plays a role in protecting the surfaces of articles or commodities so as to solve the problems.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the PE winding film comprises the following raw materials in parts by mass: 50-80 parts of modified polyethylene, 2-8 parts of graphene fiber, 2-14 parts of silicon dioxide, 20-30 parts of methyl vinyl silicone rubber, 5-30 parts of linear low density polyethylene, 0.2-1 part of stabilizer, 0.1-1 part of antioxidant, 0.1-1 part of light stabilizer, 0.1-7 parts of tackifier, 0.2-1 part of toughening agent and 0.1-1 part of flame retardant.
Preferably, the modified polyethylene is prepared by the following method: stirring and mixing puerarin powder, PEPQ, anhydrous ethanol and polyethylene in a three-neck flask for 4-6h, evaporating the anhydrous ethanol to obtain polyethylene powder, drying in a drying box at 70 ℃, adding calcium stearate, uniformly mixing, and finally extruding by a double screw at 150-180 ℃ to obtain the modified polyethylene.
Preferably, the puerarin powder is a square melon seed extract, a square melon seed extract or a pomegranate rind extract.
Preferably, the stabilizer is one or more than two of paraffin oil, epoxy vegetable oil or phosphorous acid clusters, and the stabilizer is any one of classified antioxidants or navy antioxidants
Preferably, the light stabilizer is 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole, and the tackifier is polyisobutylene or ultra-low density polyethylene.
Preferably, the toughening agent is any one or a mixture of more than two of polyethylene glycol, dioctyl phthalate and glycerol monoacetate, and the flame retardant is any one or a mixture of more than two of antimony oxide, triphenyl phosphate, zinc borate and aluminum hydroxide.
Preferably, the specific preparation method of the PE winding film comprises the following steps:
s101: preparing raw materials: preparing required raw materials of polyethylene, graphene fiber, silicon dioxide, methyl vinyl silicone rubber, linear low-density polyethylene, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorbent, a tackifier, a toughening agent and a flame retardant according to the mass ratio for later use;
s102: modifying the smell: carrying out antioxidation and odor modification treatment on polyethylene and linear low-density polyethylene;
s103: crushing: crushing and sieving graphene fibers to obtain powdery graphene fibers;
s104: mixing raw materials: sequentially adding the raw materials into a reaction kettle, uniformly mixing at the rotating speed of 500-1500r/min, and carrying out heating reaction at the heating temperature of 90-120 ℃ for 6-8h to obtain a mixture;
s105: melt extrusion: carrying out high-temperature extrusion treatment on the mixture by adopting a double-screw extruder, wherein the rotating speed of the extruder is 600-800r/min, and the temperature is 150-220 ℃;
s106: casting film forming: and (3) carrying out casting film forming treatment on the extruded raw materials through a casting machine, wherein the casting temperature is 200-260 ℃, and carrying out winding treatment through a winder after cooling through a cooling roller to obtain the PE winding film.
(III) advantageous effects
The invention provides a method for a PE winding film production process, which has the following beneficial effects:
the PE winding film has the advantages that the light stabilizer is added into the raw materials, the possibility of photochemical reaction can be eliminated and slowed down under the radiation of light by ultraviolet rays, and the process of photoaging is prevented or delayed, so that the service life of the PE winding film is prolonged, meanwhile, the PE winding film has high tensile strength, is not easy to burn when exposed fire occurs, has a certain fireproof effect, reduces the occurrence of potential safety hazards, has good adhesive force and easy peelability through the added tackifier, and plays a role in protecting the surfaces of articles or commodities.
Detailed Description
All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: the PE winding film comprises the following raw materials in parts by mass: 50 parts of modified polyethylene, 2 parts of graphene fiber, 2 parts of silicon dioxide, 20 parts of methyl vinyl silicone rubber, 5 parts of linear low density polyethylene, 0.2 part of stabilizer, 0.1 part of antioxidant, 0.1 part of light stabilizer, 0.1 part of tackifier, 0.2 part of flexibilizer and 0.1 part of flame retardant.
Further, the modified polyethylene is prepared by the following method: stirring and mixing puerarin powder, PEPQ, absolute ethyl alcohol and polyethylene in a three-neck flask for 4 hours, evaporating absolute ethyl alcohol to obtain polyethylene powder, drying the polyethylene powder in a drying box at 70 ℃, adding calcium stearate, uniformly mixing, and finally extruding by a double screw at 150 ℃ in the environment to obtain the modified polyethylene.
Still further, the puerarin powder is extract of radix Trichosanthis Cucumeroidis, extract of semen Cucumidis sativi or extract of pericarpium Granati.
Still further, the stabilizer is one or more than two of paraffin oil, epoxy vegetable oil or phosphorous acid cluster, and the antioxidant is any one of classified antioxidants or dark blue antioxidants.
Still further, the light stabilizer is 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole, and the tackifier is polyisobutylene or ultra-low density polyethylene.
Still further, the toughening agent is any one or a mixture of more than two of polyethylene glycol, dioctyl phthalate and glycerol monoacetate, and the flame retardant is any one or a mixture of more than two of antimony oxide, triphenyl phosphate, zinc borate and aluminum hydroxide.
A method for a production process of a PE winding film comprises the following steps:
s101: preparing raw materials: preparing required raw materials of polyethylene, graphene fiber, silicon dioxide, methyl vinyl silicone rubber, linear low-density polyethylene, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorbent, a tackifier, a toughening agent and a flame retardant according to the mass ratio for later use;
s102: modifying the smell: carrying out antioxidation and odor modification treatment on polyethylene and linear low-density polyethylene;
s103: crushing: crushing and screening graphene fibers to obtain powdery graphene fibers;
s104: mixing raw materials: sequentially adding the raw materials into a reaction kettle, uniformly mixing at the rotation speed of 500r/min, and carrying out heating reaction at the heating temperature of 90 ℃ for 6 hours to obtain a mixture;
s105: melt extrusion: carrying out high-temperature extrusion treatment on the mixture by adopting a double-screw extruder, wherein the rotating speed of the extruder is 600r/min, and the temperature is 150 ℃;
s106: casting and film forming: and (3) carrying out casting film forming treatment on the extruded raw materials through a casting machine, wherein the casting temperature is 200 ℃, and carrying out winding treatment through a winder after cooling through a cooling roller to obtain the PE winding film.
Example 2
The invention provides a technical scheme that: the PE winding film comprises the following raw materials in parts by mass: 65 parts of modified polyethylene, 6 parts of graphene fiber, 8 parts of silicon dioxide, 25 parts of methyl vinyl silicone rubber, 18 parts of linear low density polyethylene, 0.6 part of stabilizer, 0.5 part of antioxidant, 0.5 part of light stabilizer, 3.6 parts of tackifier, 0.6 part of flexibilizer and 0.5 part of flame retardant.
Further, the modified polyethylene is prepared by the following method: stirring and mixing puerarin powder, PEPQ, absolute ethyl alcohol and polyethylene in a three-neck flask for 5 hours, evaporating the absolute ethyl alcohol to obtain polyethylene powder, drying the polyethylene powder in a drying box at 70 ℃, adding calcium stearate, uniformly mixing, and finally extruding by a double screw at the environment of 165 ℃ to obtain the modified polyethylene.
Still further, the puerarin powder is extract of radix Trichosanthis Cucumeroidis, extract of semen Cucumidis sativi or extract of pericarpium Granati.
Still further, the stabilizer is one or more than two of paraffin oil, epoxy vegetable oil or phosphorous acid cluster, and the antioxidant is any one of classified antioxidants or dark blue antioxidants.
Still further, the light stabilizer is 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole, and the tackifier is polyisobutylene or ultra-low density polyethylene.
Still further, the toughening agent is any one or a mixture of more than two of polyethylene glycol, dioctyl phthalate and glycerol monoacetate, and the flame retardant is any one or a mixture of more than two of antimony oxide, triphenyl phosphate, zinc borate and aluminum hydroxide.
A method for a production process of a PE winding film comprises the following steps:
s101: preparing raw materials: preparing required raw materials of polyethylene, graphene fiber, silicon dioxide, methyl vinyl silicone rubber, linear low-density polyethylene, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorbent, a tackifier, a toughening agent and a flame retardant according to the mass ratio for later use;
s102: modifying the smell: carrying out antioxidation and odor modification treatment on polyethylene and linear low-density polyethylene;
s103: crushing: crushing and sieving graphene fibers to obtain powdery graphene fibers;
s104: mixing raw materials: sequentially adding the raw materials into a reaction kettle, uniformly mixing at the rotating speed of 1000r/min, and carrying out heating reaction at the heating temperature of 105 ℃ for 7 hours to obtain a mixture;
s105: melt extrusion: carrying out high-temperature extrusion treatment on the mixture by adopting a double-screw extruder, wherein the rotating speed of the extruder is 7r/min, and the temperature is 180 ℃;
s106: casting film forming: and (3) carrying out casting film forming treatment on the extruded raw materials through a casting machine, wherein the casting temperature is 230 ℃, and carrying out winding treatment through a winder after cooling through a cooling roller to obtain the PE winding film.
Example 3
The invention provides a technical scheme that: the PE winding film comprises the following raw materials in parts by mass: 80 parts of modified polyethylene, 8 parts of graphene fiber, 14 parts of silicon dioxide, 30 parts of methyl vinyl silicone rubber, 30 parts of linear low density polyethylene, 1 part of stabilizer, 1 part of antioxidant, 1 part of light stabilizer, 7 parts of tackifier, 1 part of flexibilizer and 1 part of flame retardant.
Further, the modified polyethylene is prepared by the following method: stirring and mixing puerarin powder, PEPQ, absolute ethyl alcohol and polyethylene in a three-neck flask for 6h, evaporating the absolute ethyl alcohol to obtain polyethylene powder, drying the polyethylene powder in a drying box at 70 ℃, adding calcium stearate, uniformly mixing, and finally extruding by a double screw at 180 ℃ to obtain the modified polyethylene.
Still further, the puerarin powder is extract of radix Trichosanthis Cucumeroidis, extract of semen Cucumidis sativi or extract of pericarpium Granati.
Still further, the stabilizer is one or more than two of paraffin oil, epoxy vegetable oil or phosphorous acid cluster, and the antioxidant is any one of classified antioxidants or darkle antioxidants.
Still further, the light stabilizer is 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole, and the tackifier is polyisobutylene or ultra-low density polyethylene.
Still further, the toughening agent is any one or a mixture of more than two of polyethylene glycol, dioctyl phthalate and glycerol monoacetate, and the flame retardant is any one or a mixture of more than two of antimony oxide, triphenyl phosphate, zinc borate and aluminum hydroxide.
A method for producing a PE winding film comprises the following steps:
s101: preparing raw materials: preparing required raw materials of polyethylene, graphene fiber, silicon dioxide, methyl vinyl silicone rubber, linear low density polyethylene, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorbent, a tackifier, a toughening agent and a flame retardant according to the mass ratio for later use;
s102: modifying the smell: carrying out antioxidation and odor modification treatment on polyethylene and linear low-density polyethylene;
s103: crushing: crushing and screening graphene fibers to obtain powdery graphene fibers;
s104: mixing raw materials: sequentially adding the raw materials into a reaction kettle, uniformly mixing at the rotating speed of 1500r/min, and carrying out heating reaction at the heating temperature of 120 ℃ for 8 hours to obtain a mixture;
s105: melt extrusion: carrying out high-temperature extrusion treatment on the mixture by adopting a double-screw extruder, wherein the rotating speed of the extruder is 800r/min, and the temperature is 220 ℃;
s106: casting film forming: and (3) carrying out casting film forming treatment on the extruded raw materials through a casting machine, wherein the casting temperature is 260 ℃, and carrying out winding treatment through a winder after cooling through a cooling roller to obtain the PE winding film.
Examples of the experiments
The experimental method comprises the following steps: the PE wrap films produced in example 1, example 2 and example 3 and a commercially available PE wrap film were selected; and (3) performing performance tests, and determining the elongation at break according to GB/T1040.3-2006, wherein the specific experimental results are as follows:
| item | Example 1 | Example 2 | Example 3 | Examples of the experiments |
| Horizontal elongation at Break | 490 | 498 | 488 | 342 |
| Elongation at break at vertical | 142 | 144 | 141 | 98 |
Therefore, the PE winding films produced in the examples 1, 2 and 3 have the elongation at break superior to that of the PE winding films sold in the market, and the PE winding films produced by the method of the invention have the advantages of high tensile strength, difficult combustion when exposed to open fire and long service life.
In conclusion, the light stabilizer is added into the raw materials of the PE winding film, so that the possibility of photochemical reaction on the winding film under the irradiation of light by ultraviolet rays can be eliminated and slowed down, and the photo-aging process is prevented or delayed, so that the service life of the PE winding film is prolonged, meanwhile, the PE winding film has high tensile strength, is not easy to burn when exposed to fire, has a certain fireproof effect, reduces the potential safety hazard, has good bonding force and easy stripping performance through the added tackifier, and has a protection effect on the surface of an article or a commodity.
It should be noted that, in this document, if there are first and second, etc., relational terms are only used for distinguishing one entity or operation from another entity or operation, and there is no necessarily any requirement or suggestion that any actual relation or order exists between the entities or operations. Also, 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. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A PE winding film, characterized in that: the PE winding film comprises the following raw materials in parts by mass: 50-80 parts of modified polyethylene, 2-8 parts of graphene fiber, 2-14 parts of silicon dioxide, 20-30 parts of methyl vinyl silicone rubber, 5-30 parts of linear low density polyethylene, 0.2-1 part of stabilizer, 0.1-1 part of antioxidant, 0.1-1 part of light stabilizer, 0.1-7 parts of tackifier, 0.2-1 part of toughening agent and 0.1-1 part of flame retardant.
2. The PE winding film according to claim 1, wherein: the modified polyethylene is prepared by the following method: stirring and mixing puerarin powder, PEPQ, anhydrous ethanol and polyethylene in a three-neck flask for 4-6h, evaporating the anhydrous ethanol to obtain polyethylene powder, drying the polyethylene powder in a drying box at 70 ℃, adding calcium stearate, uniformly mixing, and finally extruding by a double screw at 150-180 ℃ to obtain the modified polyethylene.
3. The PE wrap film of claim 2, wherein: the puerarin powder is selected from extract of radix Trichosanthis Cucumeroidis, extract of semen Cucurbitae, or extract of pericarpium Granati.
4. The PE winding film according to claim 1, characterized in that: the stabilizer is one or more than two of paraffin oil, epoxy vegetable oil or phosphorous acid clusters, and the stabilizer is any one of classified antioxidants or dark blue antioxidants.
5. The PE winding film according to claim 1, wherein: the light stabilizer is 2- (2 '-hydroxy-5' -tert-octylphenyl) benzotriazole, and the tackifier is polyisobutylene or ultra-low density polyethylene.
6. The PE winding film according to claim 1, wherein: the toughening agent is any one or a mixture of more than two of polyethylene glycol, dioctyl phthalate and glycerol monoacetate, and the flame retardant is any one or a mixture of more than two of antimony oxide, triphenyl phosphate, zinc borate and aluminum hydroxide.
7. The method for the PE winding film production process according to claim 1, wherein: the specific preparation method of the PE winding film comprises the following steps:
s101: preparing raw materials: preparing required raw materials of polyethylene, graphene fiber, silicon dioxide, methyl vinyl silicone rubber, linear low density polyethylene, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorbent, a tackifier, a toughening agent and a flame retardant according to the mass ratio for later use;
s102: modifying the smell: carrying out antioxidation and odor modification treatment on polyethylene and linear low-density polyethylene;
s103: crushing: crushing and screening graphene fibers to obtain powdery graphene fibers;
s104: mixing raw materials: sequentially adding the raw materials into a reaction kettle, uniformly mixing at the rotating speed of 500-1500r/min, and carrying out heating reaction at the heating temperature of 90-120 ℃ for 6-8h to obtain a mixture;
s105: melt extrusion: carrying out high-temperature extrusion treatment on the mixture by adopting a double-screw extruder, wherein the rotating speed of the extruder is 600-800r/min, and the temperature is 150-220 ℃;
s106: casting and film forming: and (3) carrying out casting film forming treatment on the extruded raw materials through a casting machine, wherein the casting temperature is 200-260 ℃, and carrying out winding treatment through a winder after cooling through a cooling roller to obtain the PE winding film.
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