CN106432874A - Anti-tear polyethylene foam packaging film and method for preparing same - Google Patents
Anti-tear polyethylene foam packaging film and method for preparing same Download PDFInfo
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- CN106432874A CN106432874A CN201610862025.1A CN201610862025A CN106432874A CN 106432874 A CN106432874 A CN 106432874A CN 201610862025 A CN201610862025 A CN 201610862025A CN 106432874 A CN106432874 A CN 106432874A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2411/00—Characterised by the use of homopolymers or copolymers of chloroprene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses an anti-tear polyethylene foam packaging film and a method for preparing the same. The method includes 1), carrying out soaking treatment on plant fiber powder, chitin and diatomaceous earth in alkali liquor, filtering the alkali liquor with the plant fiber powder, the chitin and the diatomaceous earth to obtain filter cake and cleaning and drying the filter cake to obtain modified plant fibers; 2), preliminarily mixing PE (polyethylene), ABA (acrylonitrile-butadiene-acrylate copolymers), chloroprene rubber, stearate, zinc borate, diisononyl phthalate, lecithin, maleic anhydride, asbestos and the modified plant fibers with one another to obtain preliminary mixtures; 3), mixing sodium bicarbonate, urea and the preliminary mixtures with one another to obtain mixtures and heating and decomposing the mixtures to obtain foam mixtures; 4), secondarily mixing sulfur, graphene, calcium carbonate whiskers and the foam mixtures with one another and then carrying out extrusion molding to obtain the anti-tear polyethylene foam packaging film. The anti-tear polyethylene foam packaging film and the method have the advantages that the anti-tear polyethylene foam packaging film prepared by the aid of the method is excellent in mechanical property and is particularly excellent in anti-tear performance.
Description
Technical field
The present invention relates to blister pack film, in particular it relates to a kind of anti tear polyethylene foam packaging film and its preparation side
Method.
Background technology
Polyethylene foamed, is commonly called as PE Foam, closed pore type micro-hole thermoplastic；It is divided into cross-linking type and not two kinds of cross-linking type,
It is a kind of novel environment friendly packaging material with high-strength buffering shock-absorbing shock resistance.Polyethylene foamed has the advantage that：1）Soft
Tough, light weight, high resilience, recovery are good, can absorb and disperse, by bending, the effect that external impact force reaches buffering；2）
Insulation, protection against the tide, abrasion-proof, corrosion-resistant.Just because of which, there is above-mentioned a series of advantage so which is widely used in IT, electricity
Son, electrical equipment, five metals are electromechanical, Advanced Videos, the packaging of the product such as precision instrument, high-grade family.Although, polyethylene foamed film has
Above-mentioned advantage, but its tear resistance is poor, and then limit which and further use.
Content of the invention
It is an object of the invention to provide a kind of anti tear polyethylene foam packaging film and preparation method thereof, by said method
Obtained anti tear polyethylene foam packaging film has excellent mechanical property, especially tear resistance；In addition, the preparation side
Method has the characteristics that operation is simple, raw material is easy to get.
To achieve these goals, the invention provides a kind of preparation method of anti tear polyethylene foam packaging film, bag
Include：
1）Plant fiber's powder, chitin, kieselguhr are carried out immersion treatment in alkali liquor, then carries out filtering to take filter cake, clear
Wash, dry to obtain modified plant fibers；
2）By PE（Polyethylene）、ABA（Acrylonitrile-butadiene-acrylate copolymer）, neoprene, stearate, boric acid
Zinc, diisononyl phthalate, lecithin, maleic anhydride, asbestos and modified plant fibers carry out preliminary mixing to obtain just
Step mixing thing；
3）Sodium bicarbonate, carbamide are mixed and carry out heat resolve with preliminary mixing thing to obtain the mixing thing that foams；
4）Sulfur, Graphene, calcium carbonate crystal whisker and foaming mixing thing are carried out secondary mixing, then extrusion molding is anti-tear to be obtained
Split polyethylene foam packaging film.
Present invention also offers a kind of anti tear polyethylene foam packaging film, the toughness polyethylene foam packaging film is by upper
The preparation method that states is prepared.
In technique scheme, the present invention is caused obtained anti-by the synergism between each step and each material
Tear polyethylene foam packaging film has excellent mechanical property, especially tear resistance；In addition, the preparation method has work
The feature that sequence is simple, raw material is easy to get.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of anti tear polyethylene foam packaging film, including：
1）Plant fiber's powder, chitin, kieselguhr are carried out immersion treatment in alkali liquor, then carries out filtering to take filter cake, clear
Wash, dry to obtain modified plant fibers；
2）By PE（Polyethylene）、ABA（Acrylonitrile-butadiene-acrylate copolymer）, neoprene, stearate, boric acid
Zinc, diisononyl phthalate, lecithin, maleic anhydride, asbestos and modified plant fibers carry out preliminary mixing to obtain just
Step mixing thing；
3）Sodium bicarbonate, carbamide are mixed and carry out heat resolve with preliminary mixing thing to obtain the mixing thing that foams；
4）Sulfur, Graphene, calcium carbonate crystal whisker and foaming mixing thing are carried out secondary mixing, then extrusion molding is anti-tear to be obtained
Split polyethylene foam packaging film.
1 the step of the present invention）In, the pH of alkali liquor can be selected in wide scope, but in order that obtained anti-
Tear polyethylene foam packaging film has more excellent mechanical property, especially tear resistance；Preferably, in step 1）In,
The pH of alkali liquor is 11-13.
1 the step of the present invention）In, the concrete species of alkali liquor can be selected in wide scope, but in order that system
The anti tear polyethylene foam packaging film for obtaining has more excellent mechanical property, especially tear resistance；Preferably, alkali liquor is
Sodium hydroxide solution and/or potassium oxide solution.
1 the step of the present invention）In, the particle diameter of Plant fiber's powder can be selected in wide scope, but in order that
Obtain obtained anti tear polyethylene foam packaging film and there is more excellent mechanical property, especially tear resistance；Preferably, plant
The particle diameter of fibres powder is 1-5mm.
1 the step of the present invention）In, the consumption of each material can be selected in wide scope, but in order that is obtained
Anti tear polyethylene foam packaging film have more excellent mechanical property, especially tear resistance；Preferably, in step 1）
In, with respect to Plant fiber's powder of 100 weight portions, the consumption of chitin is 11-16 weight portion, and diatomaceous consumption is 22-
27 weight portions, the consumption of alkali liquor is 150-220 weight portion.
1 the step of the present invention）In, the actual conditions of immersion treatment can be selected in wide scope, but in order that
Obtain obtained anti tear polyethylene foam packaging film and there is more excellent mechanical property, especially tear resistance；Preferably, soak
Bubble is processed and at least meets following condition：Soaking temperature is 55-65 DEG C, and soak time is 48-72h.
1 the step of the present invention）In, the mode of cleaning and actual conditions can be selected in wide scope, but be
Obtained anti tear polyethylene foam packaging film is caused to have more excellent mechanical property, especially tear resistance；It is preferred that
Ground, cleans by the way of washing, and the number of times for cleaning is that 3-4, in each cleaning process, solid-liquid weight ratio is 1：15-30.
2 the step of the present invention）In, the consumption of each material can be selected in wide scope, but in order that is obtained
Anti tear polyethylene foam packaging film have more excellent mechanical property, especially tear resistance；Preferably, in step 2）
In, the consumption with respect to PE, the ABA of 100 weight portions is 23-27 weight portion, and the consumption of neoprene is 17-26 weight portion, firmly
The consumption of fat acid salt is 7-13 weight portion, and the consumption of Firebrake ZB is 4-8 weight portion, and the consumption of diisononyl phthalate is
44-58 weight portion, the consumption of lecithin is 19-27 weight portion, and the consumption of maleic anhydride is 8-14 weight portion, and the consumption of asbestos is
14-18 weight portion, the consumption of modified plant fibers is 24-29 weight portion.
2 the step of the present invention）In, the actual conditions of preliminary mixing can be selected in wide scope, but in order that
Obtain obtained anti tear polyethylene foam packaging film and there is more excellent mechanical property, especially tear resistance；Preferably, exist
Step 2）In, preliminary mixing at least meets following condition：Melting temperature is 175-185 DEG C, and mixing time is 8-12h；
2 the step of the present invention）In, the species of stearate can be selected in wide scope, but in order that obtained
Anti tear polyethylene foam packaging film has more excellent mechanical property, especially tear resistance；Preferably, stearate choosing
One or more from zinc stearate, calcium stearate, sodium stearate and potassium stearate.
2 the step of the present invention）In, the weight average molecular weight of PE and ABA can be selected in wide scope, but in order to
So that obtained anti tear polyethylene foam packaging film has more excellent mechanical property, especially tear resistance；Preferably,
The weight average molecular weight of PE is 3000-5000 for the weight average molecular weight of 6000-9000, ABA.
3 the step of the present invention）In, the consumption of each material can be selected in wide scope, but in order that is obtained
Anti tear polyethylene foam packaging film have more excellent mechanical property, especially tear resistance；Preferably, in step 3）
In, with respect to the preliminary mixing thing of 100 weight portions, the consumption of sodium bicarbonate is 3-5 weight portion, and the consumption of carbamide is 1.2-1.8
Weight portion.
3 the step of the present invention）In, the actual conditions of heat resolve can be selected in wide scope, but in order that
Obtain obtained anti tear polyethylene foam packaging film and there is more excellent mechanical property, especially tear resistance；Preferably, exist
Step 3）In, heat resolve at least meets following condition：Heating-up temperature is 210-215 DEG C, and heat time heating time is 30-45min；
In order to improve the effect of heat resolve further, it is preferable that before heat resolve, step 3）Also include temperature-rise period：
By mixed material from the 175-185 DEG C of ramp with 0.3-0.5 DEG C/min to 210-215 DEG C.
4 the step of the present invention）In, the consumption of each material can be selected in wide scope, but in order that is obtained
Anti tear polyethylene foam packaging film have more excellent mechanical property, especially tear resistance；Preferably, in step 4）
In, with respect to the foaming mixing thing of 100 weight portions, the consumption of sulfur is 6-9 weight portion, and the consumption of Graphene is 0.9-1.2 weight
Amount part, the consumption of calcium carbonate crystal whisker is 0.3-0.7 weight portion.
4 the step of the present invention）In, the actual conditions of secondary mixing can be selected in wide scope, but in order that
Obtain obtained anti tear polyethylene foam packaging film and there is more excellent mechanical property, especially tear resistance；Preferably, exist
Step 4）In, secondary mixing at least meets following condition：Melting temperature is 165-170 DEG C, and mixing time is 45-60min；
4 the step of the present invention）In, the size of calcium carbonate crystal whisker can be selected in wide scope, but in order that is obtained
Anti tear polyethylene foam packaging film have more excellent mechanical property, especially tear resistance；Preferably, Calcium Carbonate crystalline substance
Following condition must be met：Length is 30-40um, a diameter of 0.5-1.2um.
Present invention also offers a kind of anti tear polyethylene foam packaging film, the toughness polyethylene foam packaging film is by upper
The preparation method that states is prepared.
Hereinafter will be described the present invention by embodiment.
Embodiment 1
1）By Plant fiber's powder（Particle diameter is 3mm）, chitin, kieselguhr, sodium hydroxide solution（PH is 12）According to 100：13：
25：190 weight is incorporated in immersion treatment 36h at 60 DEG C than mixed, then carries out filtering to take filter cake, cleaning（3 times, each solid-liquid
Weight ratio is 1：20）, dry to obtain modified plant fibers；
2）By PE（Weight average molecular weight is 8000）、ABA（Weight average molecular weight is 4000）, neoprene, zinc stearate, Firebrake ZB,
Diisononyl phthalate, lecithin, maleic anhydride, asbestos and modified plant fibers are according to 100：25：22：10：6：50：
23：12：16：27 weight ratio tentatively kneads 10h to obtain preliminary mixing thing at 180 DEG C；
3）By sodium bicarbonate, carbamide and preliminary mixing thing according to 4：1.6：100 weight than mixing, and from 180 DEG C with 0.4 DEG C/
The ramp of min is to heat resolve 35min at 213 DEG C to obtain the mixing thing that foams；
4）By sulfur, Graphene, calcium carbonate crystal whisker（Length is 35um, a diameter of 0.9um）With foaming mixing thing according to 7：1.0：
0.5：100 weight ratio secondary mixing 50min at 168 DEG C, then extrusion molding is to be obtained anti tear polyethylene foam packaging
Film A1.
Embodiment 2
1）By Plant fiber's powder（Particle diameter is 1mm）, chitin, kieselguhr, potassium oxide solution（PH is 11）According to 100：11：
22：150 weight is incorporated in immersion treatment 48h at 55 DEG C than mixed, then carries out filtering to take filter cake, cleaning（3 times, each solid-liquid
Weight ratio is 1：15）, dry to obtain modified plant fibers；
2）By PE（Weight average molecular weight is 6000）、ABA（Weight average molecular weight is 3000）, neoprene, sodium stearate, Firebrake ZB,
Diisononyl phthalate, lecithin, maleic anhydride, asbestos and modified plant fibers are according to 100：23：17：7：4：44：19：
8：14：24 weight ratio tentatively kneads 8h to obtain preliminary mixing thing at 175 DEG C；
3）By sodium bicarbonate, carbamide and preliminary mixing thing according to 3：1.2：100 weight than mixing, and from 175 DEG C with 0.3 DEG C/
The ramp of min is to heat resolve 30min at 210 DEG C to obtain the mixing thing that foams；
4）By sulfur, Graphene, calcium carbonate crystal whisker（Length is 30um, a diameter of 0.5um）With foaming mixing thing according to 6：0.9：
0.3：100 weight ratio secondary mixing 45min at 165 DEG C, then extrusion molding is to be obtained anti tear polyethylene foam packaging
Film A2.
Embodiment 3
1）By Plant fiber's powder（Particle diameter is 5mm）, chitin, kieselguhr, potassium oxide solution（PH is 13）According to 100：16：
27：220 weight is incorporated in immersion treatment 72h at 65 DEG C than mixed, then carries out filtering to take filter cake, cleaning（4 times, each solid-liquid
Weight ratio is 1：30）, dry to obtain modified plant fibers；
2）By PE（Weight average molecular weight is 9000）、ABA（Weight average molecular weight is 5000）, neoprene, potassium stearate, Firebrake ZB,
Diisononyl phthalate, lecithin, maleic anhydride, asbestos and modified plant fibers are according to 100：27：26：13：8：58：
27：14：18：42 weight ratio tentatively kneads 12h to obtain preliminary mixing thing at 185 DEG C；
3）By sodium bicarbonate, carbamide and preliminary mixing thing according to 5：1.8：100 weight than mixing, and from 185 DEG C with 0.5 DEG C/
The ramp of min is to heat resolve 45min at 215 DEG C to obtain the mixing thing that foams；
4）By sulfur, Graphene, calcium carbonate crystal whisker（Length is 40um, a diameter of 1.2um）With foaming mixing thing according to 9：1.2：
0.7：100 weight ratio secondary mixing 60min at 170 DEG C, then extrusion molding is to be obtained anti tear polyethylene foam packaging
Film A3.
Comparative example 1
Method according to embodiment 1 carries out blister pack film B1, except for the difference that, step 1 is obtained）In not using chitin, diatom
Soil.
Comparative example 2
Method according to embodiment 1 carries out blister pack film B2, except for the difference that, step 2 is obtained）In not using ABA.
Comparative example 3
Method according to embodiment 1 carries out blister pack film B3, except for the difference that, step 2 is obtained）In not using neoprene.
Comparative example 4
Method according to embodiment 1 carries out blister pack film B4, except for the difference that, step 2 is obtained）In not using improved plant fibre
Dimension.
Comparative example 5
Method according to embodiment 1 carries out blister pack film B5, except for the difference that, step 4 is obtained）In not using sulfur.
Comparative example 6
Method according to embodiment 1 carries out blister pack film B6, except for the difference that, step 4 is obtained）In not using Graphene.
Comparative example 7
Method according to embodiment 1 carries out blister pack film B7, except for the difference that, step 4 is obtained）In not using calcium carbonate crystal whisker.
Detection example 1
The impact rebound degree of above-mentioned blister pack film is detected by the method that GB/T1681-2009 is recorded, by GB/T6669-
2008 methods that records detect the Compression Set of above-mentioned blister pack film, are detected by the method that GB10808-2006 is recorded
The tearing toughness of above-mentioned blister pack film, concrete outcome is shown in Table 1.
Table 1
| Impact rebound degree（%） | Compression Set（%） | Tearing toughness（N/mm） | |
| A1 | 32 | 41 | 2.2 |
| A2 | 30 | 42 | 2.1 |
| A3 | 31 | 40 | 2.0 |
| B1 | 21 | 31 | 1.1 |
| B2 | 22 | 29 | 1.2 |
| B3 | 18 | 27 | 1.2 |
| B4 | 21 | 28 | 1.3 |
| B5 | 20 | 31 | 1.4 |
| B6 | 19 | 29 | 1.2 |
| B7 | 18 | 30 | 1.3 |
By above-described embodiment, comparative example and detection example, the anti tear polyethylene foam packaging film that the present invention is provided has
Excellent mechanical property, especially tear resistance.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, multiple simple variant can be carried out to technical scheme, this
A little simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy is no longer separately illustrated.
Additionally, combination in any can also be carried out between a variety of embodiments of the present invention, as long as which is without prejudice to this
The thought of invention, which should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of anti tear polyethylene foam packaging film, it is characterised in that include：
1）Plant fiber's powder, chitin, kieselguhr are carried out immersion treatment in alkali liquor, then carries out filtering to take filter cake, clear
Wash, dry to obtain modified plant fibers；
2）By PE（Polyethylene）、ABA（Acrylonitrile-butadiene-acrylate copolymer）, neoprene, stearate, boric acid
Zinc, diisononyl phthalate, lecithin, maleic anhydride, asbestos carry out preliminary mixing to obtain with the modified plant fibers
To preliminary mixing thing；
3）Sodium bicarbonate, carbamide are mixed and carry out heat resolve with the preliminary mixing thing to obtain the mixing thing that foams；
4）Sulfur, Graphene, calcium carbonate crystal whisker and the foaming mixing thing are carried out secondary mixing, then extrusion molding is to be obtained
The anti tear polyethylene foam packaging film.
2. preparation method according to claim 1, wherein, in step 1）In, the pH of the alkali liquor is 11-13；
Preferably, the alkali liquor is sodium hydroxide solution and/or potassium oxide solution；
It is highly preferred that the particle diameter of Plant fiber's powder is 1-5mm.
3. preparation method according to claim 1 and 2, wherein, in step 1）In, with respect to the plant of 100 weight portions
Fibres powder, the consumption of the chitin is 11-16 weight portion, and the diatomaceous consumption is 22-27 weight portion, the alkali
The consumption of liquid is 150-220 weight portion；
Preferably, the immersion treatment at least meets following condition：Soaking temperature is 55-65 DEG C, and soak time is 48-72h；
It is highly preferred that the cleaning is by the way of washing, and the number of times for cleaning is 3-4, solid-liquid weight in each cleaning process
Amount is than being 1：15-30.
4. preparation method according to claim 3, wherein, in step 2）In, with respect to the PE of 100 weight portions, institute
The consumption for stating ABA is 23-27 weight portion, and the consumption of the neoprene is 17-26 weight portion, and the consumption of the stearate is
7-13 weight portion, the consumption of the Firebrake ZB is 4-8 weight portion, and the consumption of the diisononyl phthalate is 44-58 weight
Amount part, the consumption of the lecithin is 19-27 weight portion, and the consumption of the maleic anhydride is 8-14 weight portion, the asbestos
Consumption is 14-18 weight portion, and the consumption of the modified plant fibers is 24-29 weight portion.
5. preparation method according to claim 4, wherein, in step 2）In, the preliminary mixing at least meets following bar
Part：Melting temperature is 175-185 DEG C, and mixing time is 8-12h；
Preferably, the one kind or many of the stearate in zinc stearate, calcium stearate, sodium stearate and potassium stearate
Kind；
It is highly preferred that the weight average molecular weight of the PE is 3000-5000 for the weight average molecular weight of 6000-9000, the ABA.
6. the preparation method according to claim 4 or 5, wherein, in step 3）In, described first with respect to 100 weight portions
Step mixing thing, the consumption of the sodium bicarbonate is 3-5 weight portion, and the consumption of the carbamide is 1.2-1.8 weight portion.
7. preparation method according to claim 6, wherein, in step 3）In, the heat resolve at least meets following bar
Part：Heating-up temperature is 210-215 DEG C, and heat time heating time is 30-45min；
Preferably, before the heat resolve, step 3）Also include temperature-rise period：By mixed material from 175-185 DEG C with
The ramp of 0.3-0.5 DEG C/min is to 210-215 DEG C.
8. preparation method according to claim 7, wherein, in step 4）In, mix with respect to the foaming of 100 weight portions
Refining thing, the consumption of the sulfur is 6-9 weight portion, and the consumption of the Graphene is 0.9-1.2 weight portion, the calcium carbonate crystal whisker
Consumption be 0.3-0.7 weight portion.
9. preparation method according to claim 8, wherein, in step 4）In, the secondary mixing at least meets following bar
Part：Melting temperature is 165-170 DEG C, and mixing time is 45-60min；
Preferably, the calcium carbonate crystal whisker meets following condition：Length is 30-40um, a diameter of 0.5-1.2um.
10. a kind of anti tear polyethylene foam packaging film, it is characterised in that the anti tear polyethylene foam packaging film is by power
Profit requires that the preparation method in 1-9 described in any one is prepared.
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| CN103554626A (en) * | 2013-11-06 | 2014-02-05 | 福建农林大学 | Micro-foaming polyethylene-matrix wood-plastic composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554626A (en) * | 2013-11-06 | 2014-02-05 | 福建农林大学 | Micro-foaming polyethylene-matrix wood-plastic composite material and preparation method thereof |
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| 何继敏: "《新型聚合物发泡材料及其技术》", 31 January 2008, 化学工业出版社 * |
| 刘培生: "《多孔材料引论》", 30 September 2004, 清华大学出版社 * |
| 化学化工大辞典编委会: "《化学化工大辞典》", 31 January 2003, 化学工业出版社 * |
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