CN105542331A - Preparation method of biodegradation polyethylene material - Google Patents
Preparation method of biodegradation polyethylene material Download PDFInfo
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- CN105542331A CN105542331A CN201510981025.9A CN201510981025A CN105542331A CN 105542331 A CN105542331 A CN 105542331A CN 201510981025 A CN201510981025 A CN 201510981025A CN 105542331 A CN105542331 A CN 105542331A
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- Prior art keywords
- polyethylene
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- surface layer
- polyethylene film
- hydrophilic surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
-
- 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
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/30—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
-
- 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
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2323/30—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by oxidation
-
- 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
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- 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
Abstract
The invention discloses a preparation method of a biodegradation polyethylene material. The preparation method comprises the following steps: preparing a hydrophilic surface layer, preparing polyethylene films and compounding the hydrophilic surface layer and the polyethylene films. The preparation method has the advantages that the polyethylene material prepared by the method has the advantages of greatly improving the hydrophilicity of the biodegradation polyethylene material to enhance the biodegradation performance and accelerating splitting of polyethylene macromolecules into small molecules for further degradation.
Description
Technical field
The present invention and to high molecule plastic manufacture field, specifically a kind of Biodegradable polyethylene material preparation method.
Background technology
For now, along with the demand of low-carbon (LC) life, conventional plastic steps down from the stage of history just gradually, and what arise at the historic moment is degredation plastic material.Two kinds of degradable materials of current main flow are photodegradation material and biodegradable material respectively, and wherein the technology of photodegradable plastics is ripe in the eighties in 20th century, and increase of production is very fast.
Prior art Problems existing is: photodegradable plastics is because self is only long for the sunshine duration, and the area of quantity of illumination abundance uses, and should have narrow scope, be limited to farmland coverture etc. more, on the other hand, the main component of photodegradable plastics is polyalkenes resin, and its degradable property falls under suspicion; For this phenomenon, the research for biodegradable material becomes more important; But because poly molecular weight is large; Hydrophobicity is strong, therefore polythene material occurring in nature biological degradation slowly, therefore to improve the water-based energy that its biological degradation rate just must solve poly molecular weight or polyethylene surface.
Summary of the invention
Have for the deficiencies in the prior art, the object of this invention is to provide a kind of Biodegradable polyethylene material preparation method, the hydrophobicity on common plastics surface can not only be improved, in biodegradation process, macromole sub polyethylene can also be slit into small molecules polyethylene, its biological degradation is accelerated.
For achieving the above object, the present invention states a kind of Biodegradable polyethylene material preparation method, comprises the following steps:
Prepare hydrophilic surface layer:
By after polyethylene and polyvinyl alcohol mixing under the temperature condition of 220 ~ 290 DEG C melting add pro-oxidant simultaneously, and pass into excessive oxygen and carry out pre-treatment 20 ~ 30 minutes, the quality of pro-oxidant is 0.1 ~ 1% of polyethylene quality;
In polyethylene melt, add starch again, starch quality is 1 ~ 3% of polyethylene quality; Continue to pass into oxygen 2 ~ 3 hours; Then add polyoxyethylene glycol and acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions; React after 4 ~ 6 hours, by reactant drying forming on a glass, obtain hydrophilic surface layer stand-by;
Prepare polyethylene film:
Polyethylene melting under the temperature condition of 280 ~ 320 DEG C is added pro-oxidant simultaneously, and passes into excessive oxygen and carry out pre-treatment 1 ~ 2 hour, the quality of pro-oxidant is 0.5 ~ 3% of polyethylene quality;
In polyethylene melt, add PE slipping agent and kaolin again, described PE slipping agent and kaolinic mass distribution are 0.5 ~ 3% and 2 ~ 5% of polyethylene quality;
Continue to pass into oxygen 2 ~ 3 hours; Then add polyoxyethylene glycol and acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions, react after 6 ~ 10 hours, by reactant drying forming on a glass, obtain polyethylene film stand-by;
Composite hydrophilic top layer and polyethylene film:
Hydrophilic surface layer in above-mentioned steps and polyethylene film are contained in respectively on gluing compounding machine coiled strip roller; Then control respectively by respective automatic tension and after automatic deviation rectifying device, apply water-soluble glue to hydrophilic surface layer and polyethylene film surface; Finally rapid in hydrophilic surface layer and polyethylene film compound, and then carry out rolling and oven dry.
Preferably, obtained hydrophilic surface layer and the Thickness Ratio of polyethylene film are 1:3.
Preferably, described to prepare polyethylene and polyvinyl alcohol ratio of mixture example in hydrophilic surface layer step be (2 ~ 3): 1.
It is preferably, described that to prepare polyethylene used in hydrophilic surface layer step be Low Density Polyethylene.
It is preferably, described that to prepare polyethylene used in polyethylene film step be high density polyethylene(HDPE).
Preferably, in described composite hydrophilic top layer and polyethylene film step, polyethylene film gluing compounding machine coiled strip roller surface is provided with micropin, and described micropin diameter is between 3nm to 10nm.
Preferably, in described composite hydrophilic top layer and polyethylene film step, the number of plies of composite polyethylene film is 1 ~ 3 layer.
Preferably, the quality of described polyoxyethylene glycol is 30 ~ 80% of polyethylene quality, and the quality of described catalyzer is 0.1 ~ 1% of polyethylene quality.
Unusual effect of the present invention is: manufacture the film with hydrophilic radical on the top layer of polythene material according to the polythene material of this programme manufacture, and in the polyethylene film of internal layer, increase multiple biodegradation agent, after outer layer degrades, the vesicular structure on internal layer surface is conducive to the absorption of moisture, further quickening polyethylene macromole splits into small molecules, and its biodegradable efficiency is increased.
Embodiment
Embodiment 1
A kind of Biodegradable polyethylene material preparation method
Prepare hydrophilic surface layer:
By after 100g Low Density Polyethylene and the mixing of 40g polyvinyl alcohol under the temperature condition of 230 DEG C melting add 0.5g pro-oxidant simultaneously, and pass into excessive oxygen and carry out pre-treatment 20 minutes;
In polyethylene melt, add 2g starch again, continue to pass into oxygen 2.5 hours; Then add 30g polyoxyethylene glycol and 0.5g acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions; React after 5 hours, by reactant drying forming on a glass, obtain hydrophilic surface layer stand-by;
Prepare polyethylene film:
The melting under the temperature condition of 310 DEG C of 300g high density polyethylene(HDPE) is added 2g pro-oxidant simultaneously, and passes into excessive oxygen and carry out pre-treatment 1.5 hours;
5gPE slipping agent and 8g kaolin is added again in polyethylene melt;
Continue to pass into oxygen 2 hours; Then add 95g polyoxyethylene glycol and 2g acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions, react after 7 hours, by reactant drying forming on a glass, obtain polyethylene film stand-by, repeat this step and obtain 2 polyethylene films;
Composite hydrophilic top layer and polyethylene film:
Hydrophilic surface layer in above-mentioned steps and polyethylene film are contained in respectively on gluing compounding machine coiled strip roller, the coiled strip rod of subsides polyethylene film is provided with the micropin that diameter is 5nm; Then control respectively by respective automatic tension and after automatic deviation rectifying device, apply water-soluble glue to hydrophilic surface layer and polyethylene film surface; Finally rapid in hydrophilic surface layer and polyethylene film compound, repeat aforesaid operations, 2 polyethylene films are all compounded on hydrophilic surface layer, finally obtain the composite membrane of two layers of hydrophilic top layer, front and back folder two layers of polyethylene film, and then carry out rolling obtaining end product with oven dry.
Its performance of the matrix material obtained by above-mentioned standard is as follows:
Water-permeable 6700g/sm.d;
Water-soluble residue 0;
Dry stripping strength 10N/3 ";
Wet stripping strength 2.2N/3 ".
Embodiment 2
A kind of Biodegradable polyethylene material preparation method
Prepare hydrophilic surface layer:
By after 150g Low Density Polyethylene and the mixing of 60g polyvinyl alcohol under the temperature condition of 290 DEG C melting add 1.2g pro-oxidant simultaneously, and pass into excessive oxygen and carry out pre-treatment 25 minutes;
In polyethylene melt, add 2.5g starch again, continue to pass into oxygen 3 hours; Then add 35g polyoxyethylene glycol and 0.8g acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions; React after 4 hours, by reactant drying forming on a glass, obtain hydrophilic surface layer stand-by;
Prepare polyethylene film:
The melting under the temperature condition of 300 DEG C of 450g high density polyethylene(HDPE) is added 4.5g pro-oxidant simultaneously, and passes into excessive oxygen and carry out pre-treatment 2 hours;
11gPE slipping agent and 28g kaolin is added again in polyethylene melt;
Continue to pass into oxygen 3 hours; Then add 150g polyoxyethylene glycol and 7g acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions, react after 6 hours, by reactant drying forming on a glass, obtain polyethylene film stand-by, repeat this step and obtain 3 polyethylene films;
Composite hydrophilic top layer and polyethylene film:
Hydrophilic surface layer in above-mentioned steps and polyethylene film are contained in respectively on gluing compounding machine coiled strip roller, the coiled strip rod of subsides polyethylene film is provided with the micropin that diameter is 3nm; Then control respectively by respective automatic tension and after automatic deviation rectifying device, apply water-soluble glue to hydrophilic surface layer and polyethylene film surface; Finally rapid in hydrophilic surface layer and polyethylene film compound, repeat aforesaid operations, 3 polyethylene films are all compounded on hydrophilic surface layer, finally obtain the composite membrane of two layers of hydrophilic top layer, front and back folder three-layer polyethylene film, and then carry out rolling obtaining end product with oven dry.
Its performance of the matrix material obtained by above-mentioned standard is as follows:
Water-permeable 6300g/sm.d;
Water-soluble residue 0;
Dry stripping strength 11N/3 ";
Wet stripping strength 2.4N/3 ".
Show through testing data, biodegradable material manufactured in the present embodiment, its degraded extension at break retention rate longitudinally 8.3%, degraded extension at break retention rate laterally 9.6%, greatly strengthen its biological degradation rate; Also possesses advantages such as not easily tearing simultaneously.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a Biodegradable polyethylene material preparation method, is characterized in that: comprise the following steps:
Prepare hydrophilic surface layer:
By after polyethylene and polyvinyl alcohol mixing under the temperature condition of 220 ~ 290 DEG C melting add pro-oxidant simultaneously, and pass into excessive oxygen and carry out pre-treatment 20 ~ 30 minutes, the quality of pro-oxidant is 0.1 ~ 1% of polyethylene quality;
In polyethylene melt, add starch again, starch quality is 1 ~ 3% of polyethylene quality; Continue to pass into oxygen 2 ~ 3 hours; Then add polyoxyethylene glycol and acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions; React after 4 ~ 6 hours, by reactant drying forming on a glass, obtain hydrophilic surface layer stand-by;
Prepare polyethylene film:
Polyethylene melting under the temperature condition of 280 ~ 320 DEG C is added pro-oxidant simultaneously, and passes into excessive oxygen and carry out pre-treatment 1 ~ 2 hour, the quality of pro-oxidant is 0.5 ~ 3% of polyethylene quality;
In polyethylene melt, add PE slipping agent and kaolin again, described PE slipping agent and kaolinic mass distribution are 0.5 ~ 3% and 2 ~ 5% of polyethylene quality;
Continue to pass into oxygen 2 ~ 3 hours; Then add polyoxyethylene glycol and acid catalyst, and pass into nitrogen and carry out condensation reaction under the high temperature conditions, react after 6 ~ 10 hours, by reactant drying forming on a glass, obtain polyethylene film stand-by;
Composite hydrophilic top layer and polyethylene film:
Hydrophilic surface layer in above-mentioned steps and polyethylene film are contained in respectively on gluing compounding machine coiled strip roller; Then control respectively by respective automatic tension and after automatic deviation rectifying device, apply water-soluble glue to hydrophilic surface layer and polyethylene film surface; Finally rapid in hydrophilic surface layer and polyethylene film compound, and then carry out rolling and oven dry.
2. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: obtained hydrophilic surface layer and the Thickness Ratio of polyethylene film are 1:3.
3. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: described to prepare polyethylene and polyvinyl alcohol ratio of mixture example in hydrophilic surface layer step be (2 ~ 3): 1.
4. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: described to prepare polyethylene used in hydrophilic surface layer step be Low Density Polyethylene.
5. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: described to prepare polyethylene used in polyethylene film step be high density polyethylene(HDPE).
6. a kind of Biodegradable polyethylene material preparation method according to claim 1, it is characterized in that: in described composite hydrophilic top layer and polyethylene film step, polyethylene film gluing compounding machine coiled strip roller surface is provided with micropin, and described micropin diameter is between 3nm to 10nm.
7. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: in described composite hydrophilic top layer and polyethylene film step, the number of plies of composite polyethylene film is 1 ~ 3 layer.
8. a kind of Biodegradable polyethylene material preparation method according to claim 1, is characterized in that: the quality of described polyoxyethylene glycol is 30 ~ 80% of polyethylene quality, the quality of described catalyzer is 0.1 ~ 1% of polyethylene quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981025.9A CN105542331A (en) | 2015-12-23 | 2015-12-23 | Preparation method of biodegradation polyethylene material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981025.9A CN105542331A (en) | 2015-12-23 | 2015-12-23 | Preparation method of biodegradation polyethylene material |
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| Publication Number | Publication Date |
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| CN105542331A true CN105542331A (en) | 2016-05-04 |
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| CN201510981025.9A Pending CN105542331A (en) | 2015-12-23 | 2015-12-23 | Preparation method of biodegradation polyethylene material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206714A (en) * | 2018-08-31 | 2019-01-15 | 徐小培 | A kind of hydrophilic polyethylene method for manufacturing thin film |
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2015
- 2015-12-23 CN CN201510981025.9A patent/CN105542331A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206714A (en) * | 2018-08-31 | 2019-01-15 | 徐小培 | A kind of hydrophilic polyethylene method for manufacturing thin film |
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