CN109467795A - A kind of moisture vapor permeable polyethylene film and preparation method thereof - Google Patents
A kind of moisture vapor permeable polyethylene film and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of moisture vapor permeable polyethylene films and preparation method thereof, LLDPE, kaolin, calcium carbonate, Parleam, ethylene glycol monostearate, ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane, oleamide, polybutadiene, foreign smell eliminating agent, ferrous sulfate, sericite and antibacterial agent are weighed, is blow molded after raw material is squeezed out, stretches film forming；Product is to Escherichia coli antibiotic rate 99%-99.8%, to staphylococcus aureus antibiotic rate 99%-99.5%；Tearing strength 3.43-3.45N, tensile strength 12-15MPa；Spiracular slit rate 31-35%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 4950-5200g/ (m224h).
Description
Technical field
The present invention relates to a kind of polyethylene film material more particularly to a kind of moisture vapor permeable polyethylene film and preparation method thereof,
Belong to plastic material technical field.
Background technique
Linear low density polyethylene is structurally different from general low density polyethylene (LDPE), because long-chain branch is not present.
The linearity of LLDPE depends on the different process of manufacture of LLDPE and LDPE.LLDPE usually under lower temperature and pressure,
It is closed by ethylene and advanced a alkene such as butylene, hexene or octene copolymer and is generated.The LLDPE polymer tool that polymerization process generates
There is the molecular weight distribution more narrower than general LDPE, while there is linear structure it to be made to have different rheological behaviors.LLDPE's is molten
Melt the requirement that flow behavior adapts to new process, especially uses film extrusion process, it can the high-quality LLDPE product of output.LLDPE is answered
The traditional market all for polyethylene, enhance it is anti-stretch, penetration, the performance of shock resistance and tear-proof, make LLDPE be suitable for making
Film.Its excellent environmental stress crack resistance, low-temperature impact resistance and resistance to warping make LLDPE to tubing, plate extrusion molding
It is all attractive with all molding applications.The newest application of LLDPE is the lining that waste landfills and waste liquid pool are used for as mulch
Layer.
LDPE and LLDPE has fabulous rheological characteristic or melt fluidity.LLDPE has smaller shearing sensibility, because
There is Narrow Molecular Weight Distribution and short-chain branch for it.In shear history (such as extrusion molding), LLDPE maintains bigger viscosity, because
And it is difficult to process than the LDPE of same melt index.In extrusion molding, the lower shearing sensibility of LLDPE makes polymer molecular chain
Stress relaxation faster, and thus physical property to the sensibility that blow-up ratio changes subtract school melt extension in, LLDPE is various
Usually all there is lower viscosity under strain rate.That is it will not generate when stretching as LDPE and should be hardened
Change.Increase the surprising increase that .LDPE shows viscosity with the deformation ratio of polyethylene, this is caused by molecular entanglement.It is this existing
As can not observe in LLDPE, polymer is set not tangle because lacking long-chain branch in LLDPE.This performance is to film application
Of the utmost importance is because LLDPE film calls the easily veryyer thin film of system together in the case where keeping high intensity and toughness.
LLDPE has penetrated into most of traditional markets of polyethylene, including film, molding, tubing and wire and cable.Antiseepage
Leaking mulch is the market LLDPE mulch newly developed, and a kind of large size extrusion sheet, is used as waste landfills and waste reservoir pads, and is prevented
Leakage or pollution surrounding area.Some film markets of LLDPE, for example, it is production sack, refuse bag, resilient packing object, industrial
The advantages of bushing, towel formula bushing and shopping bag, these are all this resins after utilizing improvement intensity and toughness.Transparent membrane, example
It such as bread bag, is dominated by LDPE always, because it has better turbidity.However, the blend of LLDPE and LDPE will change
Into intensity.
The ldpe film that ldpe film mainly uses extrusion blow molding processes and T modulus method to produce is a kind of flexible and transparent thin
Film, nontoxic, odorless, thickness is generally between 0.02~0.1 ㎜.It is steady with good water resistance, moisture resistance, drought tolerance and chemistry
It is qualitative.It is largely used to the general damp-prrof packing of food, drug, daily necessities and metal product and the packaging of frozen food.But for
Hygroscopicity is big, the more demanding article of moisture resistance, then needs using the better film of moisture resistance and Laminated plastic film package.LDPE is thin
The air penetrability of film is big, without fragrance protectiveness and oil resistivity it is poor, it is impossible to be used in the packaging of oxidizable food, typical local food and oil-containing food.
But good permeability enables it to the fresh-keeping packaging for the fresh article such as water fruits and vegetables.The Thermoadhesive and Low Temperature Thermal of ldpe film
Envelope property adhesive layer and hot sealing layer etc. good, therefore that be commonly used for laminated film, but due to its poor heat resistance, therefore cannot act as retort pouch
Hot sealing layer.
Chinese patent CN102317356A, publication date are on January 11st, 2012, are disclosed a kind of with improved barrier property
Can polyethylene film, be mainly made of high density polyethylene (HDPE) blow molding, solve oxygen flow gas rate and the low defect of moisture vapor permeable rate,
But tearing strength, tensile strength, spiracular slit rate and elongation etc. do not improve, with social city, technicalization, hommization
Development, design a kind of tearing strength, tensile strength, spiracular slit rate and the high moisture vapor permeable polyethylene film and its preparation of elongation
Method is very important with meeting the market demand.
Summary of the invention
The technical issues of solution:
The application does not have the technology of significant improvement for existing LLDPE film tearing strength, tensile strength, spiracular slit rate and elongation
Problem provides a kind of using moisture vapor permeable polyethylene film and preparation method thereof.
Technical solution:
A kind of moisture vapor permeable polyethylene film, raw material match as follows in parts by weight: LLDPE100 parts, 5-25 parts of kaolin, and carbonic acid
50-60 parts of calcium, 35-45 parts of Parleam, 20-40 parts of ethylene glycol monostearate, 15-25 parts of ethylene propylene diene rubber, stone
2-8 parts of wax, 10-20 parts of methylvinylcyclosiloxane, 1-5 parts of oleamide, 5-15 parts of polybutadiene, foreign smell eliminating agent
0.03-0.07 parts, 0.5-1.5 parts of ferrous sulfate, 15-35 parts of sericite, 1-3 parts of antibacterial agent.
As a preferred technical solution of the present invention: the raw material of the moisture vapor permeable polyethylene film matches in parts by weight
As follows: LLDPE100 parts, 10-20 parts of kaolin, 52-58 parts of calcium carbonate, 37-43 parts of Parleam, ethylene glycol list is stearic
25-35 parts of acid esters, 18-22 parts of ethylene propylene diene rubber, 4-6 parts of paraffin, 13-18 parts of methylvinylcyclosiloxane, oleamide
2-4 parts, 8-12 parts of polybutadiene, 0.04-0.06 parts of foreign smell eliminating agent, 0.7-1.3 parts of ferrous sulfate, 20-30 parts of sericite, resist
1.5-2.5 parts of microbial inoculum.
As a preferred technical solution of the present invention: the raw material of the moisture vapor permeable polyethylene film matches in parts by weight
It is as follows: LLDPE100 parts, 15 parts of kaolin, 55 parts of calcium carbonate, 40 parts of Parleam, 30 parts of ethylene glycol monostearate,
20 parts of ethylene propylene diene rubber, 5 parts of paraffin, 15 parts of methylvinylcyclosiloxane, 3 parts of oleamide, 10 parts of polybutadiene, peculiar smell
0.05 part of remover, 1 part of ferrous sulfate, 25 parts of sericite, 2 parts of antibacterial agent.
As a preferred technical solution of the present invention: the foreign smell eliminating agent uses zeolite, methyl acetate or nanometer two
Titanium oxide.
As a preferred technical solution of the present invention: the antibacterial agent uses nanometer silver-zirconium phosphate antimicrobial.
The preparation method step of the moisture vapor permeable polyethylene film are as follows:
Step 1: proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate in parts by weight
Ester is warming up to 70-90 DEG C and stirs evenly；
Step 2: sequentially adding ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, it is warming up to 100-
110 DEG C, surplus stock is added after mixing, stirs 10-30min；
Step 3: the material after second step is stirred squeezes out at 190-210 DEG C, it is blow molded into the film of 60-65 μ m-thick, at 80 DEG C
It is stretched by longitudinal stretching ratio 2:1.
The utility model has the advantages that
Compared to the prior art a kind of moisture vapor permeable polyethylene film of the present invention and preparation method thereof uses above technical scheme,
1, product is had following technical effect that Escherichia coli antibiotic rate 99%-99.8%, to staphylococcus aureus antibiotic rate 99%-
99.5%；2, tearing strength 3.43-3.45N, tensile strength 12-15MPa；3, spiracular slit rate 31-35%, longitudinal tensile strain rate 100%；
4, moisture-vapor transmission 4950-5200g/(m224h), and peculiar smell can be eliminated, can produce extensively and constantly replace existing material
Material.
Specific embodiment
Embodiment 1:
Proportion weighs LLDPE100 parts in parts by weight, and 5 parts of kaolin, 50 parts of calcium carbonate, 35 parts of Parleam, ethylene glycol
20 parts of monostearate, 15 parts of ethylene propylene diene rubber, 2 parts of paraffin, 10 parts of methylvinylcyclosiloxane, 1 part of oleamide, gather
5 parts of butadiene, 0.03 part of nano-titanium dioxide, 0.5 part of ferrous sulfate, 15 parts of sericite, nanometer silver-zirconium phosphate antimicrobial 1
Part, proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate in parts by weight, heats up
It is stirred evenly to 70 DEG C, sequentially adds ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, be warming up to
100 DEG C, surplus stock is added after mixing, stirs 10min, is squeezed out at 190 DEG C after stirring, be blow molded into the film of 60 μ m-thicks,
It is stretched at 80 DEG C by longitudinal stretching ratio 2:1.
Product is to Escherichia coli antibiotic rate 99%, to staphylococcus aureus antibiotic rate 99.1%；Tearing strength 3.43N is drawn
Stretch intensity 12MPa；Spiracular slit rate 31%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 4950-5200g/(m224h).
Embodiment 2:
Proportion weighs LLDPE100 parts in parts by weight, and 25 parts of kaolin, 60 parts of calcium carbonate, 45 parts of Parleam, second two
40 parts of alcohol monostearate, 25 parts of ethylene propylene diene rubber, 8 parts of paraffin, 20 parts of methylvinylcyclosiloxane, 5 parts of oleamide,
15 parts of polybutadiene, 0.07 part of nano-titanium dioxide, 1.5 parts of ferrous sulfate, 35 parts of sericite, nanometer silver-zirconium phosphate antimicrobial
3 parts, proportion in parts by weight weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate, heats up
It is stirred evenly to 70-90 DEG C, sequentially adds ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, heated up
To 100-110 DEG C, surplus stock is added after mixing, stirs 10-30min, is squeezed out at 190-210 DEG C after stirring, is blow molded
At the film of 60-65 μ m-thick, stretched at 80 DEG C by longitudinal stretching ratio 2:1.
Product is to Escherichia coli antibiotic rate 99.2%, to staphylococcus aureus antibiotic rate 99.2%；Tearing strength 3.43N,
Tensile strength 13MPa；Spiracular slit rate 32%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 4960g/(m224h).
Embodiment 3:
Proportion weighs LLDPE100 parts in parts by weight, and 10 parts of kaolin, 52 parts of calcium carbonate, 37 parts of Parleam, second two
25 parts of alcohol monostearate, 18 parts of ethylene propylene diene rubber, 4 parts of paraffin, 13 parts of methylvinylcyclosiloxane, 2 parts of oleamide,
8 parts of polybutadiene, 0.04 part of methyl acetate, 0.7 part of ferrous sulfate, 20 parts of sericite, nanometer silver-zirconium phosphate antimicrobial 1.5
Part, proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate in parts by weight, heats up
It is stirred evenly to 70-90 DEG C, sequentially adds ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, heated up
To 100-110 DEG C, surplus stock is added after mixing, stirs 10-30min, is squeezed out at 190-210 DEG C after stirring, is blow molded
At the film of 60-65 μ m-thick, stretched at 80 DEG C by longitudinal stretching ratio 2:1.
Product is to Escherichia coli antibiotic rate 99.4%, to staphylococcus aureus antibiotic rate 99.3%；Tearing strength 3.44N,
Tensile strength 14MPa；Spiracular slit rate 33%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 4980g/(m224h).
Embodiment 4:
Proportion weighs LLDPE100 parts in parts by weight, and 20 parts of kaolin, 58 parts of calcium carbonate, 43 parts of Parleam, second two
35 parts of alcohol monostearate, 22 parts of ethylene propylene diene rubber, 6 parts of paraffin, 18 parts of methylvinylcyclosiloxane, 4 parts of oleamide,
It 12 parts of polybutadiene, 0.06 part of zeolite, 1.3 parts of ferrous sulfate, 30 parts of sericite, 2.5 parts of nanometer silver-zirconium phosphate antimicrobial, presses
Parts by weight proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate, is warming up to 70-
90 DEG C stir evenly, and sequentially add ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, are warming up to
100-110 DEG C, surplus stock is added after mixing, stirs 10-30min, squeezes out, be blow molded at 190-210 DEG C after stirring
The film of 60-65 μ m-thick is stretched at 80 DEG C by longitudinal stretching ratio 2:1.
Product is to Escherichia coli antibiotic rate 99.6%, to staphylococcus aureus antibiotic rate 99.4%；Tearing strength 3.44N,
Tensile strength 14MPa；Spiracular slit rate 34%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 5000g/(m224h).
Embodiment 5:
Proportion weighs LLDPE100 parts in parts by weight, and 15 parts of kaolin, 55 parts of calcium carbonate, 40 parts of Parleam, second two
30 parts of alcohol monostearate, 20 parts of ethylene propylene diene rubber, 5 parts of paraffin, 15 parts of methylvinylcyclosiloxane, 3 parts of oleamide,
10 parts of polybutadiene, 0.05 part of zeolite, 1 part of ferrous sulfate, 25 parts of sericite, 2 parts of nanometer silver-zirconium phosphate antimicrobial, by weight
Number proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate, is warming up to 70-90 DEG C
It stirs evenly, sequentially adds ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, be warming up to 100-110
DEG C, surplus stock is added after mixing, stirs 10-30min, is squeezed out at 190-210 DEG C after stirring, be blow molded into 60-65 μm
Thick film is stretched at 80 DEG C by longitudinal stretching ratio 2:1.
Product is to Escherichia coli antibiotic rate 99.8%, to staphylococcus aureus antibiotic rate -99.5%；Tearing strength 3.45N,
Tensile strength 15MPa；Spiracular slit rate 35%, longitudinal tensile strain rate 100%；Moisture-vapor transmission 5200g/(m224h).
All components in above embodiments can be commercially available.
The above embodiments are merely intended to illustrate the present invention rather than to limit it, thus with it is of the invention
Any change in the comparable meaning and scope of claims, should be construed as being included in the scope of the claims.
Claims (6)
1. a kind of moisture vapor permeable polyethylene film, which is characterized in that the raw material of the moisture vapor permeable polyethylene film is matched in parts by weight
Than as follows: LLDPE100 parts, 5-25 parts of kaolin, 50-60 parts of calcium carbonate, 35-45 parts of Parleam, ethylene glycol list is stearic
20-40 parts of acid esters, 15-25 parts of ethylene propylene diene rubber, 2-8 parts of paraffin, 10-20 parts of methylvinylcyclosiloxane, oleamide
1-5 parts, 5-15 parts of polybutadiene, 0.03-0.07 parts of foreign smell eliminating agent, 0.5-1.5 parts of ferrous sulfate, 15-35 parts of sericite, resist
1-3 parts of microbial inoculum.
2. a kind of moisture vapor permeable polyethylene film according to claim 1, which is characterized in that the moisture vapor permeable polyethylene film
Raw material match in parts by weight it is as follows: LLDPE100 parts, 10-20 parts of kaolin, 52-58 parts of calcium carbonate, Parleam
37-43 parts, 25-35 parts of ethylene glycol monostearate, 18-22 parts of ethylene propylene diene rubber, 4-6 parts of paraffin, ethylene methacrylic basic ring silicon
13-18 parts of oxygen alkane, 2-4 parts of oleamide, 8-12 parts of polybutadiene, 0.04-0.06 parts of foreign smell eliminating agent, ferrous sulfate 0.7-
1.3 parts, 20-30 parts of sericite, 1.5-2.5 parts of antibacterial agent.
3. a kind of moisture vapor permeable polyethylene film according to claim 1, which is characterized in that the moisture vapor permeable polyethylene film
Raw material match in parts by weight it is as follows: LLDPE100 parts, 15 parts of kaolin, 55 parts of calcium carbonate, 40 parts of Parleam, second
30 parts of glycol monostearate, 20 parts of ethylene propylene diene rubber, 5 parts of paraffin, 15 parts of methylvinylcyclosiloxane, oleamide 3
Part, 10 parts of polybutadiene, 0.05 part of foreign smell eliminating agent, 1 part of ferrous sulfate, 25 parts of sericite, 2 parts of antibacterial agent.
4. a kind of moisture vapor permeable polyethylene film according to claim 1, which is characterized in that the foreign smell eliminating agent is using boiling
Stone, methyl acetate or nano-titanium dioxide.
5. a kind of moisture vapor permeable polyethylene film according to claim 1, it is characterised in that: the antibacterial agent uses nanometer phosphorus
Sour zirconium carrying silver antimicrobials.
6. the preparation method of moisture vapor permeable polyethylene film described in a kind of claim 1, which comprises the steps of:
Step 1: proportion weighs LLDPE, kaolin, calcium carbonate, Parleam and ethylene glycol monostearate in parts by weight
Ester is warming up to 70-90 DEG C and stirs evenly；
Step 2: sequentially adding ethylene propylene diene rubber, paraffin, methylvinylcyclosiloxane and oleamide, it is warming up to 100-
110 DEG C, surplus stock is added after mixing, stirs 10-30min；
Step 3: the material after second step is stirred squeezes out at 190-210 DEG C, it is blow molded into the film of 60-65 μ m-thick, at 80 DEG C
It is stretched by longitudinal stretching ratio 2:1.
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| CN201811170483.4A CN109467795A (en) | 2018-10-09 | 2018-10-09 | A kind of moisture vapor permeable polyethylene film and preparation method thereof |
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| CN201811170483.4A CN109467795A (en) | 2018-10-09 | 2018-10-09 | A kind of moisture vapor permeable polyethylene film and preparation method thereof |
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Application publication date: 20190315 |