CN110194860A - A kind of PE heat shrink films and preparation method thereof - Google Patents
A kind of PE heat shrink films and preparation method thereof Download PDFInfo
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- CN110194860A CN110194860A CN201910565228.8A CN201910565228A CN110194860A CN 110194860 A CN110194860 A CN 110194860A CN 201910565228 A CN201910565228 A CN 201910565228A CN 110194860 A CN110194860 A CN 110194860A
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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
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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Abstract
The present invention relates to packaging material field, it is specifically related to a kind of PE heat shrink films and preparation method thereof.The PE heat shrink films are prepared by the raw material of following parts by weight: 40-60 parts of ethylene-vinyl acetate copolymer, 50-60 parts of poly- 3 butyric ester, 60-70 parts of high density polyethylene (HDPE), 40-50 parts of linear low density polyethylene, 1-2 parts of antioxidant, 1-3 parts of heat stabilizer, 1-5 parts of fire retardant, 1-3 parts of lubricant, 1-3 parts of opening agent, 2-4 parts of plasticizer, 5-10 parts of modified kaolin powder；PE heat shrink films tensile strength made from above technical scheme improves, modified kaolin powder is enabled to be evenly dispersed into base polyethylene using hexadecyl trimethoxy silane modified kaolin, the impact resistance and toughness for increasing PE heat shrink films of the invention can also improve the rheological performance of PE heat shrink films of the present invention.
Description
Technical field
The present invention relates to packaging material field, in particular to a kind of PE heat shrink films and preparation method thereof.
Background technique
Packaging industry shows growing trend to the demand of heat shrink films, and application range also constantly expands, by
In heat shrink films not only mechanical property, packaging, storage, transport, it is moisture-proof and in terms of have good comprehensive performance, easily
In the recycling of recycling and raw material, the requirement of environmental protection is met, and improves packaging efficiency on automatic packaging line, is reduced
Comprehensively packaging cost is just gradually replacing traditional packaging to become loose mail assembly package preferred.
However heat shrink films in the market there is a problem of many, for example performance is single, and intensity is low, is easily broken, transparent
Property and lustrous surface are poor and not degradable, the problems such as polluting the environment.
It is the patent document that our company filed an application in 2016 application No. is the patent of invention of CN201610511332.5,
The patented technology that the patent document is recorded solves heat shrink films tear resistance to a certain extent, and degradation property obtains
It improves, but in weatherability and tensile strength there is also deficiencies, it is therefore necessary to product be carried out into one in the prior art
The improvement of step.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of PE heat shrink films and preparation method thereof, to solve existing skill
PE heat shrink films tensile strength is high in art, wilful poor, rheological performance difference technical problem.
To achieve the above object, the present invention provides a kind of PE heat shrink films of technical solution below, it is by following weight
The raw material of part is prepared:
40-60 parts of ethylene-vinyl acetate copolymer, 50-60 parts of poly- 3 butyric ester, 60-70 parts of high density polyethylene (HDPE),
40-50 parts of linear low density polyethylene, 1-3 parts of heat stabilizer, 1-5 parts of fire retardant, 1-3 parts of lubricant, is opened 1-2 parts of antioxidant
Mouth 1-3 parts of agent, 2-4 parts of plasticizer, 5-10 parts of modified kaolin powder.
Further, the melt flow rate (MFR) of the linear low density polyethylene is 0.2-1.2g/10min, and density is
0.850-0.900g/cm3。
Further, the antioxidant is PS-802 antioxidant.
Further, the fire retardant is brominated epoxy resin.
Further, the lubricant is the mixture of fluoropolymer additive and polyethylene.
Further, the opening agent is the mixture of silica and polyethylene.
Further, the plasticizer is adipic acid rouge.
Further, the preparation step of the modified kaolin powder is as follows:
(1) kaolin is calcined into 2h under the conditions of 710-810 DEG C
(2) hexadecyl trimethoxy silane and kaolin material are added in ethanol solution, stirring is added after 1 hour
Water continues stirring 6 hours, obtains crude product；
The hexadecyl trimethoxy silane: kaolin material: ethanol solution: the mass ratio of water is 1:3:9:12；
(3) smashed 200 mesh screens in the environment of 50-80 DEG C after crude product ethanol washing after drying both
Modified kaolin powder.
Further, the preparation method of the PE heat shrink films, comprising the following steps:
(1) raw material is weighed according to above-mentioned parts by weight；
(2) it is poly- that ethylene-vinyl acetate copolymer, poly- 3 butyric ester, high density is added into reaction kettle at 75-85 DEG C
Ethylene, linear low density polyethylene, antioxidant, heat stabilizer, fire retardant, lubricant, opening agent, plasticizer, modified kaolin
Powder, and 20-30min is stirred with 150-180rpm revolving speed；
(3) reactor temperature is increased to 280-300 DEG C, pressure is down to 60pa hereinafter, reacting 1-3h with this condition
Polymer melt is obtained, then by the polymer melt extrusion of preparation, pelletizing, drying, obtains PE polyester slice；
(4) by above-mentioned PE polyester slice melting extrusion, die head slab, slab spooling, biaxial tension, cooling and shaping, measurement
Thickness, winding, cutting and rewinding, packaging, finished product.
Further, the melting extrusion temperature is 280-320 DEG C, and the biaxial tension temperature is 120-160 DEG C, described
Measurement is with a thickness of 30-40 μm.
Be using the beneficial effect of above technical scheme: tensile strength improves first, secondly uses cetyl
Trimethoxy silane modified kaolin enables to modified kaolin powder to be evenly dispersed into base polyethylene, increases
The impact resistance and toughness of PE heat shrink films of the invention can also improve the rheological performance of PE heat shrink films of the present invention.
Specific embodiment
Antioxidant is PS-802 antioxidant in the examples below；Fire retardant is brominated epoxy resin；Lubricant is fluorine-containing
The mixture of polymer processing aids and polyethylene；Opening agent is the mixture of silica and polyethylene；Plasticizer for oneself two
Sour rouge.
Embodiment 1:
A kind of PE heat shrink films, it is prepared by the raw material of following parts by weight:
It is 40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly- 3 butyric ester, 60 parts of high density polyethylene (HDPE), linear low close
40 parts of polyethylene of degree, 1 part of heat stabilizer, 1 part of fire retardant, 3 parts of lubricant, 3 parts of opening agent, 2 parts of plasticizer, changes 2 parts of antioxidant
5 parts of kaolin powder of property.
The melt flow rate (MFR) of linear low density polyethylene is 0.2-1.2g/10min, density 0.850-0.900g/
cm3。
The preparation step of kaolin powder is as follows:
(1) kaolin is calcined into 2h under the conditions of 710-810 DEG C
(2) hexadecyl trimethoxy silane and kaolin material are added in ethanol solution, stirring is added after 1 hour
Water continues stirring 6 hours, obtains crude product；
The hexadecyl trimethoxy silane: kaolin material: ethanol solution: the mass ratio of water is 1:3:9:12；
(3) smashed 200 mesh screens in the environment of 50-80 DEG C after crude product ethanol washing after drying both
Modified kaolin powder.
The preparation method of the PE heat shrink films, comprising the following steps:
(1) raw material is weighed according to above-mentioned parts by weight；
(2) it is poly- that ethylene-vinyl acetate copolymer, poly- 3 butyric ester, high density is added into reaction kettle at 75-85 DEG C
Ethylene, linear low density polyethylene, antioxidant, heat stabilizer, fire retardant, lubricant, opening agent, plasticizer, modified kaolin
Powder, and 20-30min is stirred with 150-180rpm revolving speed；
(3) reactor temperature is increased to 280-300 DEG C, pressure is down to 60pa hereinafter, reacting 1-3h with this condition
Polymer melt is obtained, then by the polymer melt extrusion of preparation, pelletizing, drying, obtains PE polyester slice；
(4) by above-mentioned PE polyester slice melting extrusion, die head slab, slab spooling, biaxial tension, cooling and shaping, measurement
Thickness, winding, cutting and rewinding, packaging, finished product.
Further, melting extrusion temperature be 280-320 DEG C, biaxial tension temperature be 120-160 DEG C, measurement with a thickness of
30-40μm。
Embodiment 2:
A kind of PE heat shrink films, it is prepared by the raw material of following parts by weight:
It is 40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly- 3 butyric ester, 60 parts of high density polyethylene (HDPE), linear low close
40 parts of polyethylene of degree, 1 part of heat stabilizer, 1 part of fire retardant, 3 parts of lubricant, 3 parts of opening agent, 2 parts of plasticizer, changes 2 parts of antioxidant
8 parts of kaolin powder of property.
Further, the melt flow rate (MFR) of the linear low density polyethylene is 0.2-1.2g/10min, and density is
0.850-0.900g/cm3。
The preparation step of kaolin powder is as follows:
(1) kaolin is calcined into 2h under the conditions of 710-810 DEG C
(2) hexadecyl trimethoxy silane and kaolin material are added in ethanol solution, stirring is added after 1 hour
Water continues stirring 6 hours, obtains crude product；
The hexadecyl trimethoxy silane: kaolin material: ethanol solution: the mass ratio of water is 1:3:9:12；
(3) smashed 200 mesh screens in the environment of 50-80 DEG C after crude product ethanol washing after drying both
Modified kaolin powder.
The preparation method of the PE heat shrink films, comprising the following steps:
(1) raw material is weighed according to above-mentioned parts by weight；
(2) it is poly- that ethylene-vinyl acetate copolymer, poly- 3 butyric ester, high density is added into reaction kettle at 75-85 DEG C
Ethylene, linear low density polyethylene, antioxidant, heat stabilizer, fire retardant, lubricant, opening agent, plasticizer, modified kaolin
Powder, and 20-30min is stirred with 150-180rpm revolving speed；
(3) reactor temperature is increased to 280-300 DEG C, pressure is down to 60pa hereinafter, reacting 1-3h with this condition
Polymer melt is obtained, then by the polymer melt extrusion of preparation, pelletizing, drying, obtains PE polyester slice；
(4) by above-mentioned PE polyester slice melting extrusion, die head slab, slab spooling, biaxial tension, cooling and shaping, measurement
Thickness, winding, cutting and rewinding, packaging, finished product.
Wherein melting extrusion temperature is 280-320 DEG C, and biaxial tension temperature is 120-160 DEG C, is measured with a thickness of 30-40 μ
m。
Embodiment 3:
A kind of PE heat shrink films, it is prepared by the raw material of following parts by weight:
It is 40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly- 3 butyric ester, 60 parts of high density polyethylene (HDPE), linear low close
40 parts of polyethylene of degree, 1 part of heat stabilizer, 1 part of fire retardant, 3 parts of lubricant, 3 parts of opening agent, 2 parts of plasticizer, changes 2 parts of antioxidant
10 parts of kaolin powder of property.
The melt flow rate (MFR) of linear low density polyethylene is 0.2-1.2g/10min, density 0.850-0.900g/
cm3。
The preparation step of kaolin powder is as follows:
(1) kaolin is calcined into 2h under the conditions of 710-810 DEG C
(2) hexadecyl trimethoxy silane and kaolin material are added in ethanol solution, stirring is added after 1 hour
Water continues stirring 6 hours, obtains crude product；
The hexadecyl trimethoxy silane: kaolin material: ethanol solution: the mass ratio of water is 1:3:9:12；
(3) smashed 200 mesh screens in the environment of 50-80 DEG C after crude product ethanol washing after drying both
Modified kaolin powder.
The preparation method of the PE heat shrink films, comprising the following steps:
(1) raw material is weighed according to above-mentioned parts by weight；
(2) it is poly- that ethylene-vinyl acetate copolymer, poly- 3 butyric ester, high density is added into reaction kettle at 75-85 DEG C
Ethylene, linear low density polyethylene, antioxidant, heat stabilizer, fire retardant, lubricant, opening agent, plasticizer, modified kaolin
Powder, and 20-30min is stirred with 150-180rpm revolving speed；
(3) reactor temperature is increased to 280-300 DEG C, pressure is down to 60pa hereinafter, reacting 1-3h with this condition
Polymer melt is obtained, then by the polymer melt extrusion of preparation, pelletizing, drying, obtains PE polyester slice；
(4) by above-mentioned PE polyester slice melting extrusion, die head slab, slab spooling, biaxial tension, cooling and shaping, measurement
Thickness, winding, cutting and rewinding, packaging, finished product.
Wherein melting extrusion temperature is 280-320 DEG C, and biaxial tension temperature is 120-160 DEG C, is measured with a thickness of 30-40 μ
m。
PE heat shrink films tensile strength prepared by the present invention can be embodied in actual application process have centainly mention
Secondly height enables to modified kaolin powder to be uniformly dispersed using hexadecyl trimethoxy silane modified kaolin
Into base polyethylene, increase the impact resistance and toughness of PE heat shrink films of the invention, PE heat of the present invention can also be improved and received
The rheological performance of contracting film
The bound of each raw material cited by the present invention and each raw material of the present invention, section value and technological parameter
Bound, the section value of (such as temperature, time) can realize the present invention, embodiment numerous to list herein.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (10)
1. a kind of PE heat shrink films, it is characterised in that: it is prepared by the raw material of following parts by weight:
It is 40-60 parts of ethylene-vinyl acetate copolymer, 50-60 parts of poly- 3 butyric ester, 60-70 parts of high density polyethylene (HDPE), linear
40-50 parts of low density polyethylene (LDPE), 1-2 parts of antioxidant, 1-3 parts of heat stabilizer, 1-5 parts of fire retardant, 1-3 parts of lubricant, opening agent
1-3 parts, 2-4 parts of plasticizer, 5-10 parts of modified kaolin powder.
2. PE heat shrink films according to claim 1, it is characterised in that: the melt flows of the linear low density polyethylene
Rate is 0.2-1.2g/10min, density 0.850-0.900g/cm3.
3. PE heat shrink films according to claim 1, it is characterised in that: the antioxidant is PS-802 antioxidant.
4. PE heat shrink films according to claim 1, it is characterised in that: the fire retardant is brominated epoxy resin.
5. PE heat shrink films according to claim 1, it is characterised in that: the lubricant is fluoropolymer additive
With the mixture of polyethylene.
6. PE heat shrink films according to claim 1, it is characterised in that: the opening agent is silica and polyethylene
Mixture.
7. PE heat shrink films according to claim 1, it is characterised in that: the plasticizer is adipic acid rouge.
8. PE heat shrink films according to claim 1, it is characterised in that: the preparation step of the modified kaolin powder is such as
Under:
(1) kaolin is calcined into 2h under the conditions of 710-810 DEG C
(2) hexadecyl trimethoxy silane and kaolin material being added in ethanol solution, water is added after 1 hour in stirring, after
Continuous stirring 6 hours, obtains crude product；
The hexadecyl trimethoxy silane: kaolin material: ethanol solution: the mass ratio of water is 1:3:9:12；
(3) smashed after drying in the environment of 50-80 DEG C after crude product ethanol washing 200 mesh screens both it is modified
Kaolin powder.
9. a kind of preparation method of the PE heat shrink films as described in claim 1-8 any one, it is characterised in that: including following
Step:
(1) raw material is weighed according to above-mentioned parts by weight；
(2) ethylene-vinyl acetate copolymer, poly- 3 butyric ester, high-density polyethylene is added into reaction kettle at 75-85 DEG C
Alkene, linear low density polyethylene, antioxidant, heat stabilizer, fire retardant, lubricant, opening agent, plasticizer, modified kaolin powder
End, and 20-30min is stirred with 150-180rpm revolving speed；
(3) reactor temperature is increased to 280-300 DEG C, pressure is down to 60pa hereinafter, reaction 1-3h is obtained with this condition
Polymer melt obtains PE polyester slice then by the polymer melt extrusion of preparation, pelletizing, drying；
(4) by above-mentioned PE polyester slice melting extrusion, die head slab, slab spooling, biaxial tension, cooling and shaping, measurement thickness,
Winding, cutting and rewinding, packaging, finished product.
10. the preparation method of PE heat shrink films according to claim 9, it is characterised in that: the melting extrusion temperature is
280-320 DEG C, the biaxial tension temperature is 120-160 DEG C, and the measurement is with a thickness of 30-40 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910565228.8A CN110194860A (en) | 2019-06-27 | 2019-06-27 | A kind of PE heat shrink films and preparation method thereof |
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| CN201910565228.8A CN110194860A (en) | 2019-06-27 | 2019-06-27 | A kind of PE heat shrink films and preparation method thereof |
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| CN110194860A true CN110194860A (en) | 2019-09-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922900A (en) * | 2019-12-11 | 2020-03-27 | 成都环宇热缩材料有限公司 | Radiation crosslinked polyethylene heat shrinkable tape and preparation method thereof |
| CN111267449A (en) * | 2020-04-14 | 2020-06-12 | 汕头市明佳热收缩膜有限公司 | PEF heat shrinkable film and preparation method thereof |
-
2019
- 2019-06-27 CN CN201910565228.8A patent/CN110194860A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922900A (en) * | 2019-12-11 | 2020-03-27 | 成都环宇热缩材料有限公司 | Radiation crosslinked polyethylene heat shrinkable tape and preparation method thereof |
| CN111267449A (en) * | 2020-04-14 | 2020-06-12 | 汕头市明佳热收缩膜有限公司 | PEF heat shrinkable film and preparation method thereof |
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Application publication date: 20190903 |
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