CN110128819A - A kind of preparation method of compound heat-sealing plastic-aluminum packaging film - Google Patents
A kind of preparation method of compound heat-sealing plastic-aluminum packaging film Download PDFInfo
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Abstract
The invention discloses a kind of preparation methods of compound heat-sealing plastic-aluminum packaging film, belong to field of packaging material.Ultrasonic reaction after the present invention first mixes nanometer aluminium powder and gelatin treatment fluid, using filter, washing and vacuum drying, nanometer aluminium powder must be pre-processed, after nanometer aluminium powder, arabinose, methylol nylon, polypropylene, erucyl amide, ferrocene, plasticizer, anti-aging agent, lubricant and the mixing of dehydrated alcohol heating stirring will be pre-processed again, vacuum distillation recycling ethyl alcohol, obtain product of distillation, after product of distillation ball milling mixing, it is transferred in casting machine, casting film-forming, cooling is to get compound heat-sealing plastic-aluminum packaging film.The compound heat-sealing plastic-aluminum packaging film of gained of the invention has excellent sealing performance and barrier property.
Description
Technical field
The invention discloses a kind of preparation methods of compound heat-sealing plastic-aluminum packaging film, belong to field of packaging material.
Background technique
The packaging of various products is widely applied because of its high barrier for soft packaging material by aluminum-plastic compound.But in bag making, product
During loading, sealing, vanning and transport etc. are each, aluminium plastic membrane makes its structure by part inevitably by wrinkle
Damage.In packaging industry, most enterprises only focus on the permeability and water vapour of initial stage soft packaging material by aluminum-plastic compound
The test of permeability, and have ignored in the process of circulation that the recurrent tiny flaw such as folding line, pin hole, micropore can be to material
Barrier property and shelf life of products have an impact.
There are mainly of two types for soft packaging material by aluminum-plastic compound, is aluminium foil one is middle layer；Another kind is vacuum aluminum-coated
Film.Usual 7~12 μm of aluminum foil thickness, obstruct gas and illumination.Internal layer is usually nontoxic polyolefins, about 60~70 μ of thickness
M can obstruct aqueous vapor, and be easy to heat sealing.Outer layer is usually polyester or nylon film, about 12 μm of thickness, is resisted with providing toughness
Mechanical shock, the function of preventing aluminium foil jackknifing, and the performances such as glossy, waterproof.Theoretically, due to aluminium foil composite soft packaging
Material can obstruct air, light, vapor completely, so the rotten of food in bag can be prevented, the color of food be made to save length
Long, storage life is 2 years or more.But aluminum foil compound bag is in use, due to being packed into, sealing in bag making, product,
Vanning and transport etc. be in whole process, and plastic-aluminum combined film is inevitably by fold, and breakage can occur for aluminium foil at fold, makes
There is the bright spot of light transmission in aluminium plastic membrane, makes its structure by local damage.During the entire process of product shapes and stores,
It needs to carry repeatedly by overturning back and forth, if therefore will lead to be formed at aluminium foil folding line to the aluminium foil layer of sack application external force
Pin hole or micropore etc..In addition, the barrier layer aluminium foil itself as composite material is also readily formed defect.In general, plastic-aluminum
The defect that composite soft packaging material occurs during production and transport mainly has two major classes.The first defect is that bag table is worn completely
Aluminium foil layer penetrates thoroughly or only, and other inside and outside base materials do not penetrate；Another common deficiency is exactly to seal defect.Currently, heat-sealing
Conjunction is to apply most universal, most practical a kind of bag making mode in compound package material.It is using extraneous various conditions (such as electricity
Heating, high frequency voltage and ultrasonic wave etc.) make plastic film sealing position is heated to become viscosity flow state, and by certain pressure, make
Two membranes fusion is integrated, and keeps intensity after cooling.And it seals region and is easy to appear leakage envelope and empty envelope defect.Leakage envelope is primarily referred to as
The superfine fraction in seal region is sealed.And empty envelope is primarily referred to as due to material wrinkle, surface irregularity, is layered or is mingled with foreign matter
Heat-sealing etc. causes heat seal strength to decline.Plastic-aluminum packaging film traditional at present is combined using aluminium foil and plastic foil, between the two
There are the bad drawbacks of interface compatibility, can be easily separated both in heat seal process, so as to cause the package encapsulation performance of product
It can not further be promoted, influence the barrier property of product, therefore also need to study it.
Summary of the invention
The present invention solves the technical problem of: it is compound using aluminium foil and plastic foil for traditional plastic-aluminum packaging film and
At there is the bad drawback of interface compatibility between the two, can be easily separated both in heat seal process, so as to cause the packet of product
The drawbacks of dress sealing performance can not be promoted further, influence the barrier property of product, provides a kind of compound heat-sealing plastic-aluminum packet
Fill the preparation method of film.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
(1) by nanometer aluminium powder and gelatin treatment fluid be in mass ratio 1:8~1:10 mix after, add nanometer aluminium powder quality 3~
5% nano magnesia, ultrasonic reaction, using filter, washing and vacuum drying obtain pretreatment nanometer aluminium powder；
(2) according to parts by weight, 20~30 parts of pretreatment nanometer aluminium powders, 2~4 portions of arabinoses, 80~100 parts of hydroxyl first are successively taken
Geordie dragon, 20~30 parts of polypropylene, 8~10 parts of erucyl amides, 4~6 parts of ferrocene, 1~3 part of plasticizer, 1~3 part of anti-aging agent,
1~3 part of lubricant, 400~500 parts of dehydrated alcohols, is poured into reaction kettle, heating stirring mixing；
(3) it is to be heated be stirred after, by reaction kettle material vacuum distillation recycling dehydrated alcohol, obtain product of distillation；
(4) it by after product of distillation ball milling mixing, is transferred in casting machine, casting film-forming, cooling is aluminum-plastic packaged to get compound heat-sealing
Film.
Step (1) the gelatin treatment fluid is made of the raw material of following parts by weight: 100~120 parts of water, 4~6 parts bright
Glue, 2~3 parts of chromic nitrates, 1~3 part of adipic acid；The gelatin that isoelectric point is 6.0 ~ 6.5 can be selected in the gelatin.
The preparation process of step (2) the methylol nylon are as follows: according to parts by weight, successively take 10~15 parts of nylon, 50
~60 parts of formic acid, 8~10 parts of water, 25~30 parts of formaldehyde first formic acid, water and nylon are added in reactor, heating stirring to Buddhist nun
After dragon is completely dissolved, formaldehyde is added, it is cooling after continuation heating stirring reaction, it neutralizes, filtering, washs and dry, obtain methylol
Nylon.
Step (2) described polypropylene is that copolymer polypropylene and homopolypropylene are that 1:1~3:1 is compounded in mass ratio.
Step (2) the plasticizer is di-n-octyl phthalate, dibutyl phthalate, phthalic acid diformazan
Any one in ester.
Step (2) anti-aging agent is antioxidant 4010, any one in anti-aging agent RD, antioxidant 4020.
Step (2) lubricant is zinc stearate, any one in calcium stearate.
Step (4) described ball milling mixing are as follows: zirconium oxide ball milling pearl, Yu Gongzhuan is added for 20:1~40:1 by ball material mass ratio
Revolving speed is 290r/min, and rotation revolving speed is 560r/min, every forward and reverse alternate run of 45min, and alternate intervals downtime is
0min, under the conditions of frequency is 40Hz, 4~6h of ball milling mixing；The zirconium oxide ball milling pearl is by the oxygen of diameter 10mm, 7mm and 5mm
Change zirconium ball milling pearl to mix by quantity ratio for 10:30:50.
The beneficial effects of the present invention are:
(1) aluminium powder is added to the plastic substrate that modification of nylon and polypropylene construct jointly with powder by technical solution of the present invention
In, by using the pretreatment of gelatin treatment fluid, it is passivated nano powder surface, drops low-surface-energy, allow in plastics base
Fine dispersion in body, can be because of with the variation of system pH in addition, both also contain carboxyl containing amino in gelatin molecule structure
Charge that amino or carboxyl have and occur mutually exclusive, be conducive to avoid the reunion between nano-powder, and in subsequent processing
In the process, due to the addition of arabinose, arabinose belongs to aldose, and the active aldehyde radical in molecular structure can be with gelatin molecule
Aldol condensation or ammonium aldehyde condensation reaction occur for hydroxyl or amino in structure, to form crosslinking in plastic substrate heating process
Nano-powder is simultaneously effectively fixed in cross-linked network hole by network structure, further promotes packaging film interiors of products consistency,
It, then can be with nano aluminium oxide in nano-powder or oxygen if there is moisture or air penetration enter inside in product use process
Change magnesium hydration reaction occurs and causes the variation of inner stuffing volume, so that hole be squeezed, and by the infiltration of moisture or air
Channel enclosed effectively avoids the further infiltration of air and moisture, to effectively play barriering effect；
(2) technical solution of the present invention is by using erucyl amide, and in product processing and subsequent hot pressing, erucyl amide can
Effective mobility can be such that the mobility between interiors of products macromolecular chain reinforces to film surface, improve film surface energy, make
Film effective adhesive seal in hot pressing, and in transition process, but part nano-powder occurs redistribution and fills out
It fills, is conducive to block diffusion admittance, in addition, being modified by carrying out methylolation to nylon, improve the heat resistance of packaging film,
The erosion of high-temperature steam or gas to packaging film effectively is avoided, further promotes the barrier property of product.
Specific embodiment
According to parts by weight, successively take 10~15 parts of nylon, 6,50~60 parts of mass fractions be 80~85% formic acid, 8~
10 parts of water, 25~30 parts of formaldehyde, first by formic acid, water and nylon 6 be added reactor in, in temperature be 78~80 DEG C, revolving speed 400
Under the conditions of~600r/min, after heating stirring is completely dissolved to nylon 6, then formaldehyde is added into reactor, continuing at temperature is
It is 90~95 DEG C, cooling after heating stirring reacts 2~4h under the conditions of revolving speed is 600~800r/min, then adjusted and reacted with ammonium hydroxide
PH filters to neutrality, obtains filter cake in device, and gained is washed with deionized filter cake 3~5 times, then the filter cake after washing is transferred to
In baking oven, dries under the conditions of being 75~80 DEG C in temperature to constant weight, obtain methylol nylon；Nanometer aluminium powder and gelatin treatment fluid are pressed
Mass ratio is that 1:8~1:10 mixing is poured into beaker, adds the nano magnesia of nanometer aluminium powder quality 3~5%, uses glass bar
After being stirred 5~10min, under the conditions of supersonic frequency is 45~55kHz, 45~60min of ultrasonic reaction is obtained using filter
Filter residue, and being washed with deionized filter residue 3~5 times, then the filter residue after washing is transferred in vacuum oven, in temperature be 85~
90 DEG C, under the conditions of vacuum degree is 60~80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, successively
Take 20~30 parts of pretreatment nanometer aluminium powders, 2~4 portions of arabinoses, 80~100 parts of methylol nylon, 20~30 parts of polypropylene, 8
~10 parts of erucyl amides, 4~6 parts of ferrocene, 1~3 part of plasticizer, 1~3 part of anti-aging agent, 1~3 part of lubricant, 400~500 parts
Dehydrated alcohol pours into reaction kettle, and reaction kettle is closed, is 145~150 DEG C DEG C in temperature, revolving speed is 600~800r/min
Under the conditions of, heating stirring mixes 30~45min, then material in reaction kettle is transferred in the three-necked flask with reflux condensing tube, subtracts
Pressure is distilled to recover dehydrated alcohol, obtains product of distillation；Gained product of distillation is transferred in ball grinder again, and is by ball material mass ratio
Zirconium oxide ball milling pearl is added in 20:1~40:1, and Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, and every 45min is just
Reversed alternate run, alternate intervals downtime are 0min, and under the conditions of frequency is 40Hz, 4~6h of ball milling mixing obtains ball milling material,
Gained ball milling material is transferred to casting machine hopper again, heats casting film-forming, control casting machine scraper knife saw is 1~2mm, then through cooling
After solidification, film is taken off, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is by the original of following parts by weight
Material composition: 100~120 parts of water, the gelatin that 4~6 parts of isoelectric points are 6.0 ~ 6.5,2~3 parts of chromic nitrates, 1~3 part of adipic acid.Institute
It is that 1:1~3:1 is compounded that state polypropylene be copolymer polypropylene and homopolypropylene in mass ratio.The plasticizer is adjacent benzene two
Formic acid di-n-octyl, any one in dibutyl phthalate, repefral.The anti-aging agent is anti-aging agent
4010, any one in anti-aging agent RD, antioxidant 4020.The lubricant is zinc stearate, any one in calcium stearate.
The zirconium oxide ball milling pearl be by diameter 10mm, 7mm and 5mm zirconium oxide ball milling pearl by quantity ratio be 10:30:50 mixing and
At.
Example 1
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
In mass ratio it is that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, adds the nanometer of nanometer aluminium powder quality 5%
Magnesia, after being stirred 10min with glass bar, under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min, using
Filter, obtain filter residue, and be washed with deionized filter residue 5 times, then the filter residue after washing is transferred in vacuum oven, in temperature be 90
DEG C, under the conditions of vacuum degree is 80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 parts are successively taken
Pretreatment nanometer aluminium powder, 4 portions of arabinoses, 100 parts of methylol nylon, 30 parts of polypropylene, 10 parts of erucyl amides, 6 parts of ferrocene,
3 parts of plasticizer, 3 parts of anti-aging agents, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and reaction kettle is closed, Yu Wen
Degree is 150 DEG C DEG C, and under the conditions of revolving speed is 800r/min, heating stirring mixes 45min, then material in reaction kettle is transferred to band reflux
In the three-necked flask of condenser pipe, vacuum distillation recycling dehydrated alcohol obtains product of distillation；Gained product of distillation is transferred to ball grinder again
In, it is that zirconium oxide ball milling pearl is added in 40:1 by ball material mass ratio, Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/
Min, every forward and reverse alternate run of 45min, alternate intervals downtime is 0min, under the conditions of frequency is 40Hz, ball milling mixing 6h,
Ball milling material is obtained, then gained ball milling material is transferred to casting machine hopper, heats casting film-forming, control casting machine scraper knife saw is 2mm, then
After cooling and solidifying, film is taken off, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is by following parts by weight
Several raw material composition: 120 parts of water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is total
Poly- polypropylene and homopolypropylene are that 3:1 is compounded in mass ratio.The plasticizer is di-n-octyl phthalate.It is described
Anti-aging agent is antioxidant 4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl is by diameter 10mm, 7mm and 5mm
Zirconium oxide ball milling pearl mixed by quantity ratio for 10:30:50.
Example 2
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
It is in mass ratio that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, after being stirred 10min with glass bar, in
Under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min obtains filter residue using filter, and is washed with deionized filter residue 5 times,
The filter residue after washing is transferred in vacuum oven again, is 90 DEG C in temperature, under the conditions of vacuum degree is 80Pa, is dried under vacuum to perseverance
Weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 parts of pretreatment nanometer aluminium powders, 4 portions of arabinoses, 100 parts of hydroxyls are successively taken
Methyl nylon, 30 parts of polypropylene, 10 parts of erucyl amides, 6 parts of ferrocene, 3 parts of plasticizer, 3 parts of anti-aging agents, 3 parts of lubricants, 500
Part dehydrated alcohol, is poured into reaction kettle, and reaction kettle is closed, in temperature be 150 DEG C DEG C, under the conditions of revolving speed is 800r/min,
Heating stirring mixes 45min, then material in reaction kettle is transferred in the three-necked flask with reflux condensing tube, vacuum distillation recycling nothing
Water-ethanol obtains product of distillation；Gained product of distillation is transferred in ball grinder again, is that zirconia ball is added in 40:1 by ball material mass ratio
Pearl is ground, Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, and every forward and reverse alternate run of 45min, alternate intervals stop
The machine time is 0min, and under the conditions of frequency is 40Hz, ball milling mixing 6h obtains ball milling material, then gained ball milling material is transferred to casting machine material
Bucket heats casting film-forming, and control casting machine scraper knife saw is 2mm, then after cooling and solidifying, takes off film, winds to get composite type heat
Seal plastic-aluminum packaging film.The gelatin treatment fluid is made of the raw material of following parts by weight: 120 parts of water, and 6 parts of isoelectric points are 6.5
Gelatin, 3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is that copolymer polypropylene and homopolypropylene are 3:1 multiple in mass ratio
With forming.The plasticizer is di-n-octyl phthalate.The anti-aging agent is antioxidant 4010.The lubricant is tristearin
Sour zinc.The zirconium oxide ball milling pearl is to be mixed by the zirconium oxide ball milling pearl of diameter 10mm, 7mm and 5mm by quantity ratio for 10:30:50
It closes.
Example 3
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
According to parts by weight, 30 parts of nanometer aluminium powders, 4 portions of arabinoses, 100 parts of methylol nylon, 30 parts of polypropylene, 10 portions of mustard are successively taken
Sour amide, 6 parts of ferrocene, 3 parts of plasticizer, 3 parts of anti-aging agents, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and
Reaction kettle is closed, it is 150 DEG C DEG C in temperature, under the conditions of revolving speed is 800r/min, heating stirring mixes 45min, then will reaction
Material is transferred in the three-necked flask with reflux condensing tube in kettle, and vacuum distillation recycling dehydrated alcohol obtains product of distillation；Again by gained
Product of distillation is transferred in ball grinder, is that zirconium oxide ball milling pearl is added in 40:1 by ball material mass ratio, and Yu Gongzhuan revolving speed is 290r/min,
Rotation revolving speed is 560r/min, and every forward and reverse alternate run of 45min, alternate intervals downtime is 0min, and frequency is 40Hz item
Under part, ball milling mixing 6h obtains ball milling material, then gained ball milling material is transferred to casting machine hopper, heats casting film-forming, controls casting machine
Scraper knife saw is 2mm, then after cooling and solidifying, and takes off film, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin processing
Liquid is made of the raw material of following parts by weight: 120 parts of water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts oneself two
Acid.The polypropylene is that copolymer polypropylene and homopolypropylene are that 3:1 is compounded in mass ratio.The plasticizer is adjacent benzene two
Formic acid di-n-octyl.The anti-aging agent is antioxidant 4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl be by
The zirconium oxide ball milling pearl of diameter 10mm, 7mm and 5mm are mixed by quantity ratio for 10:30:50.
Example 4
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
In mass ratio it is that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, adds the nanometer of nanometer aluminium powder quality 5%
Magnesia, after being stirred 10min with glass bar, under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min, using
Filter, obtain filter residue, and be washed with deionized filter residue 5 times, then the filter residue after washing is transferred in vacuum oven, in temperature be 90
DEG C, under the conditions of vacuum degree is 80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 parts are successively taken
Pretreatment nanometer aluminium powder, 100 parts of methylol nylon, 30 parts of polypropylene, 10 parts of erucyl amides, 6 parts of ferrocene, 3 parts of plasticizer, 3
Part anti-aging agent, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and reaction kettle is closed, in temperature be 150 DEG C DEG C,
Under the conditions of revolving speed is 800r/min, heating stirring mixes 45min, then material in reaction kettle is transferred to three mouthfuls with reflux condensing tube
In flask, vacuum distillation recycling dehydrated alcohol obtains product of distillation；Gained product of distillation is transferred in ball grinder again, by ball material matter
Amount is than being that zirconium oxide ball milling pearl is added in 40:1, and Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, and every 45min is just
Reversed alternate run, alternate intervals downtime is 0min, and under the conditions of frequency is 40Hz, ball milling mixing 6h obtains ball milling material, then will
Gained ball milling material is transferred to casting machine hopper, heats casting film-forming, and control casting machine scraper knife saw is 2mm, then after cooling and solidifying,
Film is taken off, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is made of the raw material of following parts by weight:
120 parts of water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is copolymer polypropylene and homopolymerization
Polypropylene is that 3:1 is compounded in mass ratio.The plasticizer is di-n-octyl phthalate.The anti-aging agent is anti-aging agent
4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl is the zirconium oxide ball milling pearl by diameter 10mm, 7mm and 5mm
It is mixed by quantity ratio for 10:30:50.
Example 5
In mass ratio it is that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, adds nanometer aluminium powder quality 5%
Nano magnesia, after being stirred 10min with glass bar, under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min, then pass through
Filtering, obtains filter residue, and be washed with deionized filter residue 5 times, then the filter residue after washing is transferred in vacuum oven, is in temperature
90 DEG C, under the conditions of vacuum degree is 80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 are successively taken
Part pretreatment nanometer aluminium powder, 4 portions of arabinoses, 100 parts of nylon, 6,30 parts of polypropylene, 10 parts of erucyl amides, 6 parts of ferrocene, 3 parts
Plasticizer, 3 parts of anti-aging agents, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and reaction kettle is closed, are in temperature
150 DEG C DEG C, under the conditions of revolving speed is 800r/min, heating stirring mixes 45min, then material in reaction kettle is transferred to band reflux condensation mode
In the three-necked flask of pipe, vacuum distillation recycling dehydrated alcohol obtains product of distillation；Gained product of distillation is transferred in ball grinder again,
It is that zirconium oxide ball milling pearl is added in 40:1 by ball material mass ratio, Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, often
The forward and reverse alternate run of 45min, alternate intervals downtime are 0min, and under the conditions of frequency is 40Hz, ball milling mixing 6h obtains ball milling
Material, then gained ball milling material is transferred to casting machine hopper, casting film-forming is heated, control casting machine scraper knife saw is 2mm, then through cooling
After solidification, film is taken off, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is by the original of following parts by weight
Material composition: 120 parts of water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is copolymerization poly- third
Alkene and homopolypropylene are that 3:1 is compounded in mass ratio.The plasticizer is di-n-octyl phthalate.The anti-aging agent
For antioxidant 4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl is by the oxidation of diameter 10mm, 7mm and 5mm
Zirconium ball milling pearl is mixed by quantity ratio for 10:30:50.
Example 6
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
In mass ratio it is that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, adds the nanometer of nanometer aluminium powder quality 5%
Magnesia, after being stirred 10min with glass bar, under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min, using
Filter, obtain filter residue, and be washed with deionized filter residue 5 times, then the filter residue after washing is transferred in vacuum oven, in temperature be 90
DEG C, under the conditions of vacuum degree is 80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 parts are successively taken
Pretreatment nanometer aluminium powder, 4 portions of arabinoses, 100 parts of methylol nylon, 30 parts of polypropylene, 6 parts of ferrocene, 3 parts of plasticizer, 3 parts
Anti-aging agent, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and reaction kettle is closed, are 150 DEG C DEG C in temperature, turn
Under the conditions of speed is 800r/min, heating stirring mixes 45min, then material in reaction kettle is transferred to three mouthfuls of burnings with reflux condensing tube
In bottle, vacuum distillation recycling dehydrated alcohol obtains product of distillation；Gained product of distillation is transferred in ball grinder again, by ball material quality
Than zirconium oxide ball milling pearl is added for 40:1, Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, and every 45min is positive and negative
To alternate run, alternate intervals downtime is 0min, and under the conditions of frequency is 40Hz, ball milling mixing 6h obtains ball milling material, then by institute
It obtains ball milling material and is transferred to casting machine hopper, heat casting film-forming, control casting machine scraper knife saw is 2mm, then after cooling and solidifying, is taken off
Film winds to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is made of the raw material of following parts by weight: 120
Part water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is that copolymer polypropylene and homopolymerization are poly-
Propylene is that 3:1 is compounded in mass ratio.The plasticizer is di-n-octyl phthalate.The anti-aging agent is anti-aging agent
4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl is the zirconium oxide ball milling pearl by diameter 10mm, 7mm and 5mm
It is mixed by quantity ratio for 10:30:50.
Example 7
According to parts by weight, successively take 15 parts of nylon, 6,60 parts of mass fractions be 85% formic acid, 10 parts of water, 30 parts of formaldehyde, first will
Formic acid, water and nylon 6 are added in reactor, in temperature be 80 DEG C, under the conditions of revolving speed is 600r/min, heating stirring to nylon 6
After being completely dissolved, then formaldehyde is added into reactor, continuing at temperature is 95 DEG C, and under the conditions of revolving speed is 800r/min, heating is stirred
It is cooling after mixing reaction 4h, then adjust pH in reactor with ammonium hydroxide and filter to neutrality, obtain filter cake, and gained is washed with deionized
Filter cake 5 times, then the filter cake after washing is transferred in baking oven, it dries under the conditions of being 80 DEG C in temperature to constant weight, obtains methylol nylon；
In mass ratio it is that 1:10 mixing is poured into beaker by nanometer aluminium powder and gelatin treatment fluid, adds the nanometer of nanometer aluminium powder quality 5%
Magnesia, after being stirred 10min with glass bar, under the conditions of supersonic frequency is 55kHz, ultrasonic reaction 60min, using
Filter, obtain filter residue, and be washed with deionized filter residue 5 times, then the filter residue after washing is transferred in vacuum oven, in temperature be 90
DEG C, under the conditions of vacuum degree is 80Pa, it is dried under vacuum to constant weight, obtains pretreatment nanometer aluminium powder；According to parts by weight, 30 parts are successively taken
Pretreatment nanometer aluminium powder, 4 portions of arabinoses, 100 parts of methylol nylon, 30 parts of polypropylene, 10 parts of erucyl amides, 3 parts of plasticizer,
3 parts of anti-aging agents, 3 parts of lubricants, 500 parts of dehydrated alcohols pour into reaction kettle, and reaction kettle is closed, in temperature be 150 DEG C
DEG C, under the conditions of revolving speed is 800r/min, heating stirring mixes 45min, then material in reaction kettle is transferred to reflux condensing tube
In three-necked flask, vacuum distillation recycling dehydrated alcohol obtains product of distillation；Gained product of distillation is transferred in ball grinder again, by ball
Expect that mass ratio is that zirconium oxide ball milling pearl is added in 40:1, Yu Gongzhuan revolving speed is 290r/min, and rotation revolving speed is 560r/min, often
The forward and reverse alternate run of 45min, alternate intervals downtime are 0min, and under the conditions of frequency is 40Hz, ball milling mixing 6h obtains ball milling
Material, then gained ball milling material is transferred to casting machine hopper, casting film-forming is heated, control casting machine scraper knife saw is 2mm, then through cooling
After solidification, film is taken off, is wound to get compound heat-sealing plastic-aluminum packaging film.The gelatin treatment fluid is by the original of following parts by weight
Material composition: 120 parts of water, the gelatin that 6 parts of isoelectric points are 6.5,3 parts of chromic nitrates, 3 parts of adipic acids.The polypropylene is copolymerization poly- third
Alkene and homopolypropylene are that 3:1 is compounded in mass ratio.The plasticizer is di-n-octyl phthalate.The anti-aging agent
For antioxidant 4010.The lubricant is zinc stearate.The zirconium oxide ball milling pearl is by the oxidation of diameter 10mm, 7mm and 5mm
Zirconium ball milling pearl is mixed by quantity ratio for 10:30:50.
Comparative example: the plastic-aluminum packaging film of Haining packing Co., Ltd. production.
1 to 7 gained packaging film of example and comparative example product are subjected to performance detection, the specific detection method is as follows:
Oxygen flow experiment: instrument selection blue streak VAC-V1 pressure differential gas permeameter, referring to GB/T1038 plastic film and thin slice gas
Body permeability test method, test philosophy are so that the two sides of sample is kept certain gas under certain temperature and humidity
Pressure difference, measures the variation of the low-pressure side gas pressure of sample, to calculate the Air permenbility of sample.
Moisture-inhibiting experiment: instrument selection blue streak TSY-T3 penetrability tester, referring to GB/T1037 plastic film and sheet material head
Water vapour test method, test philosophy are at a certain temperature, the two sides of sample to be made to keep certain steam pressure difference, measurement
By the quantity of steam of sample, to calculate the vapor transfer rate of sample.
Specific testing result is as shown in table 1:
Table 1: performance detection table
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Comparative example |
| Oxygen permeating amount/cm3/m2·24h·0.1MPa | 0.4 | 2.3 | 2.6 | 2.8 | 3.2 | 2.5 | 2.4 | 5.5 |
| Vapor transfer rate/g/m2·24h | 5.3 | 15.9 | 18.4 | 13.6 | 18.6 | 15.4 | 14.7 | 34.2 |
By 1 testing result of table it is found that the compound heat-sealing plastic-aluminum packaging film of present invention gained has excellent sealing performance and barrier
Performance.
Claims (9)
1. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film, it is characterised in that specific preparation step are as follows:
(1) by nanometer aluminium powder and gelatin treatment fluid be in mass ratio 1:8~1:10 mix after, add nanometer aluminium powder quality 3~
5% nano magnesia, ultrasonic reaction, using filter, washing and vacuum drying obtain pretreatment nanometer aluminium powder；
(2) according to parts by weight, 20~30 parts of pretreatment nanometer aluminium powders, 2~4 portions of arabinoses, 80~100 parts of hydroxyl first are successively taken
Geordie dragon, 20~30 parts of polypropylene, 8~10 parts of erucyl amides, 4~6 parts of ferrocene, 1~3 part of plasticizer, 1~3 part of anti-aging agent,
1~3 part of lubricant, 400~500 parts of dehydrated alcohols, is poured into reaction kettle, heating stirring mixing；
(3) it is to be heated be stirred after, by reaction kettle material vacuum distillation recycling dehydrated alcohol, obtain product of distillation；
(4) it by after product of distillation ball milling mixing, is transferred in casting machine, casting film-forming, cooling is aluminum-plastic packaged to get compound heat-sealing
Film.
2. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(1) the gelatin treatment fluid is made of the raw material of following parts by weight: 100~120 parts of water, 4~6 parts of gelatin, 2~3 parts of nitre
Sour chromium, 1~3 part of adipic acid；The gelatin that isoelectric point is 6.0~6.5 can be selected in the gelatin.
3. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(2) preparation process of the methylol nylon are as follows: according to parts by weight, successively take 10~15 parts of nylon, 50~60 parts of formic acid, 8
First formic acid, water and nylon are added in reactor for~10 parts of water, 25~30 parts of formaldehyde, after heating stirring is completely dissolved to nylon,
Formaldehyde is added, it is cooling after continuation heating stirring reaction, it neutralizes, filtering, washs and dry, obtain methylol nylon.
4. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(2) it is that 1:1~3:1 is compounded that the polypropylene is copolymer polypropylene and homopolypropylene in mass ratio.
5. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(2) the plasticizer is di-n-octyl phthalate, any one in dibutyl phthalate, repefral
Kind.
6. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(2) anti-aging agent is antioxidant 4010, any one in anti-aging agent RD, antioxidant 4020.
7. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(2) lubricant is zinc stearate, any one in calcium stearate.
8. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(3) vacuum distillation are as follows: in Rotary Evaporators, be 75~80 DEG C in temperature, under the conditions of pressure is 400~420mmHg, subtract
2~3h of pressure distillation.
9. a kind of preparation method of compound heat-sealing plastic-aluminum packaging film according to claim 1, it is characterised in that: step
(4) ball milling mixing are as follows: zirconium oxide ball milling pearl is added for 20:1~40:1 by ball material mass ratio, Yu Gongzhuan revolving speed is 290r/
Min, rotation revolving speed are 560r/min, and every forward and reverse alternate run of 45min, alternate intervals downtime is 0min, and frequency is
Under the conditions of 40Hz, 4~6h of ball milling mixing；The zirconium oxide ball milling pearl is the zirconium oxide ball milling pearl by diameter 10mm, 7mm and 5mm
It is mixed by quantity ratio for 10:30:50.
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