CN105001492A - Low-density polyethylene degradable mulching film modified by carrying cross-linked starch through nanometer active carbon and preparing method of low-density polyethylene degradable mulching film - Google Patents
Low-density polyethylene degradable mulching film modified by carrying cross-linked starch through nanometer active carbon and preparing method of low-density polyethylene degradable mulching film Download PDFInfo
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- CN105001492A CN105001492A CN201510442350.8A CN201510442350A CN105001492A CN 105001492 A CN105001492 A CN 105001492A CN 201510442350 A CN201510442350 A CN 201510442350A CN 105001492 A CN105001492 A CN 105001492A
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- active carbon
- density polyethylene
- starch
- mulching film
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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
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- 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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention relates to the technical field of degradable film materials, in particular to a low-density polyethylene degradable mulching film which is modified by carrying cross-linked starch through nanometer active carbon and a preparing method of the low-density polyethylene degradable mulching film. For the mulching film master batch, a complex solution of nanometer active carbon, silicoa sol and the like is used for adsorbing and fixing the cross-linked starch, the dried mixed powder is treated through a silane coupling agent and then is good in compatibility with polyethylene, the defects that a traditional starch-polyethylene degradable thin film is long in degradation period and insufficient in degradation are ovecome, and the mixed polymerization ferric sulfate can assist in improving the soil environment and degrading toxic and harmful organic matter. The mulching film prepared through the method is good in film forming performance, high in adsorption capability, capable of retaining water, breathable, capable of assisting microorganism reproduction, capable of enhancing soil fertility and improving the soil environment, higher in degradation speed, free of toxic and harmful substances, safe in ingredient, economical and environmentally friendly.
Description
Technical field
The present invention relates to degradative membrane field of material technology, be specifically related to a kind of Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of active carbon nanoparticles and preparation method thereof.
Background technology
Mulch film, as its name suggests, be membrane covering film, in order to improve the soil moisture, keep soil moisture, maintain Soil structure, prevent the disease that pest attacks crop and certain micro-organisms cause, Promoting plant growths etc., current film-mulching technique obtains extensive popularization in agricultural, and effect of increasing production is obvious.Because now a large amount of mulch film used is nondegradable macromolecular compound, neither by microbial attack, can not disintegrate, insoluble pollution hazard will inevitably be brought to descendant if things go on like this.Therefore, study degradable mulch to come into one's own gradually.
Starch is the abundant renewable resources of nature, and it is nontoxic, fully biodegradable, but poor mechanical property and water resistance but limit it applies.Starch is carried out modification by some researchs at present, by itself and synthetic resins or degradable macromolecular material is blended makes degradation material, but these materials are subject to the restriction of its mechanical property, degradation cycle and environment for use and processing technology, the use properties of product is barely satisfactory.
Summary of the invention
The object of the invention is to, prepare a kind of Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of active carbon nanoparticles, the economic environment-friendly degradable mulch film that a kind of film forming properties is good, biological degradation is abundant to obtain, raw material availability is high, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of active carbon nanoparticles, it is characterized in that, this mulch film is made up of the raw material of following weight part: Low Density Polyethylene 40-50, cross-linking starch 6-8, active carbon nanoparticles 8-10, sodium-chlor 0.01-0.02, epoxy soybean oil 1-2, bodied ferric sulfate 0.8-1, solid content are silicon sol 10-12, the ethylene-acrylic acid copolymer 4-5 of 20-25%, carboxymethyl chitosan 1-1.5, alkyl glycoside 0.1-0.2, silane coupling agent 0.1-0.2, water 25-35.
Described a kind of preparation method by the Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of active carbon nanoparticles, it is characterized in that, described preparation method is:
(1) first alkyl glycoside, cm-chitosan, sodium-chlor are dropped into and is heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 20-30min, active carbon nanoparticles is dropped in mixed solution, by gained slurry grinding distribution 40-50min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain the loaded cross-linked composites of starch of active carbon nanoparticles for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained active carbon nanoparticles and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
Degradative plastic film prepared by the present invention take low-density polyethylene material as major ingredient, add cross-linking starch to improve its biological degradability, in order to improve cross-linking starch and poly consistency, utilize the fixing cross-linking starch of the composite solutions such as there is the active carbon nanoparticles of favourable absorption and silicon sol absorption, dried mixed powder is excellent with polyethylene consistency after silane coupling agent process, improve traditional starch-polyethylene degradation film degradation cycle long, to degrade insufficient shortcoming, the bodied ferric sulfate of blending can also be assisted and be improved edatope, degraded toxic organics, the mulch film film forming properties that this invention prepares is good, high adsorption capacity, and water conservation is breathed freely, and auxiliary microbial reproduction, strengthens soil fertility, improve edatope, and degradation speed is fast, not containing hazardous and noxious substances, and composition safety, economic environmental protection.
Embodiment
Embodiment
The mulch film of the present embodiment is made up of the raw material of following weight part: Low Density Polyethylene 45, cross-linking starch 7, active carbon nanoparticles 8, sodium-chlor 0.01, epoxy soybean oil 1.5, bodied ferric sulfate 0.8, solid content are silicon sol 10, ethylene-acrylic acid copolymer 4.5, carboxymethyl chitosan 1.5, alkyl glycoside 0.1, silane coupling agent 0.1, the water 30 of 25%.
The preparation method of this degradative plastic film is:
(1) first alkyl glycoside, cm-chitosan, sodium-chlor are dropped into and is heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 25min, active carbon nanoparticles is dropped in mixed solution, by gained slurry grinding distribution 40min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain the loaded cross-linked composites of starch of active carbon nanoparticles for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained active carbon nanoparticles and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
The sample that thickness is 0.01mm made by mulch film obtained by the present embodiment, follows the result that relevant criterion carries out performance test to be:
| Test item | Detected result |
| Tensile strength (longitudinal direction) | 18.2 |
| Tensile strength (transverse direction) | 16.4 |
| Transmittance | 78.5% |
| 30d landfill rate of weight loss | 23.4% |
| 120d landfill rate of weight loss | 51.2% |
Claims (2)
1. the Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of active carbon nanoparticles, it is characterized in that, this mulch film is made up of the raw material of following weight part: Low Density Polyethylene 40-50, cross-linking starch 6-8, active carbon nanoparticles 8-10, sodium-chlor 0.01-0.02, epoxy soybean oil 1-2, bodied ferric sulfate 0.8-1, solid content are silicon sol 10-12, the ethylene-acrylic acid copolymer 4-5 of 20-25%, carboxymethyl chitosan 1-1.5, alkyl glycoside 0.1-0.2, silane coupling agent 0.1-0.2, water 25-35.
2. a kind of preparation method by the Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of active carbon nanoparticles as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first alkyl glycoside, cm-chitosan, sodium-chlor are dropped into and is heated in the water of 50-60 DEG C, be stirred to it to dissolve completely, drop into cross-linking starch, silicon sol subsequently, and solution is heated to 60-80 DEG C, after stirring gelatinization 20-30min, active carbon nanoparticles is dropped in mixed solution, by gained slurry grinding distribution 40-50min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain the loaded cross-linked composites of starch of active carbon nanoparticles for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained active carbon nanoparticles and silane coupling agent are uniformly mixed; add other leftover materials again; fully mix granulation in rear input singe screw tablets press, gained particle drops in inflation film manufacturing machine and blows film forming, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510442350.8A CN105001492A (en) | 2015-07-23 | 2015-07-23 | Low-density polyethylene degradable mulching film modified by carrying cross-linked starch through nanometer active carbon and preparing method of low-density polyethylene degradable mulching film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442350.8A CN105001492A (en) | 2015-07-23 | 2015-07-23 | Low-density polyethylene degradable mulching film modified by carrying cross-linked starch through nanometer active carbon and preparing method of low-density polyethylene degradable mulching film |
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| CN105001492A true CN105001492A (en) | 2015-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109135015A (en) * | 2018-08-20 | 2019-01-04 | 蚌埠市维光塑胶制品有限公司 | A kind of Degradable environment-friendlyplastic plastic bag |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1611531A (en) * | 2003-10-29 | 2005-05-04 | 阿图什市天人商贸有限责任公司 | Starch-based biodegradable film material and its production method |
| CN103951851A (en) * | 2014-05-15 | 2014-07-30 | 达州市金地塑料有限公司 | Mulching film and preparation method thereof |
| CN103980548A (en) * | 2014-05-16 | 2014-08-13 | 江苏省农业科学院 | Starch-based degradable agricultural mulching film and preparation method thereof |
-
2015
- 2015-07-23 CN CN201510442350.8A patent/CN105001492A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1611531A (en) * | 2003-10-29 | 2005-05-04 | 阿图什市天人商贸有限责任公司 | Starch-based biodegradable film material and its production method |
| CN103951851A (en) * | 2014-05-15 | 2014-07-30 | 达州市金地塑料有限公司 | Mulching film and preparation method thereof |
| CN103980548A (en) * | 2014-05-16 | 2014-08-13 | 江苏省农业科学院 | Starch-based degradable agricultural mulching film and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 丁浩: "《塑料工业实用手册（第二版）（上册）》", 31 August 2000 * |
| 刘德峥等: "《精细化工生产技术（第二版）》", 30 September 2011 * |
| 崔英德等: "《绿色高吸水树脂》", 31 August 2008 * |
| 柳云骐等: "《材料化学》", 28 February 2013 * |
| 温辉梁: "《塑料用树脂与助剂》", 31 December 2009 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109135015A (en) * | 2018-08-20 | 2019-01-04 | 蚌埠市维光塑胶制品有限公司 | A kind of Degradable environment-friendlyplastic plastic bag |
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Application publication date: 20151028 |