CN105017617A - Nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and preparation method thereof - Google Patents
Nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and preparation method thereof Download PDFInfo
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- CN105017617A CN105017617A CN201510442347.6A CN201510442347A CN105017617A CN 105017617 A CN105017617 A CN 105017617A CN 201510442347 A CN201510442347 A CN 201510442347A CN 105017617 A CN105017617 A CN 105017617A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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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
-
- 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
- C08K2201/011—Nanostructured additives
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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
- C08L2205/03—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)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the technical field of degradation film materials, and concretely relates to a nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and a preparation method thereof. According to the master batch of the mulch film, a mixed solution of nanometer titanium dioxide and silica sol is utilized for supporting and fixing crosslinked starch, the dried mixed powder is excellent in compatibility with polyethylene after being processed by a silane coupling agent, and thus the disadvantages that a conventional starch-polyethylene degradation film is long in degradation period and insufficient in degradation are improved, also the usage amount of crosslinked starch is increased and the production cost is reduced, and added nanometer titanium dioxide also possesses the advantages of promoting photocatalytic degradation, excellent hydrophily and antibacterial property and the like, and assists to accelerate polyethylene degradation. The mulch film prepared according to the preparation method is good in film forming performance, is capable of retaining water and breathing freely, the porous net structure is capable of accelerating microbe propagation and accelerating degradation, and the mulch film does not contain toxic or harmful substances, is safe in compositions, and is economical and environment-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 nano titanium oxide 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 nano titanium oxide, 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 nano titanium oxide, 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 6-9, nano titanium oxide 8-10, sodium polyacrylate 1-2, 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 30-35.
Described a kind of preparation method by the Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of nano titanium oxide, it is characterized in that, described preparation method is:
(1) first alkyl glycoside, cm-chitosan are dropped into and be 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, nano titanium oxide 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 nano titanium oxide for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained nano titanium oxide 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 starch and poly consistency, accelerate degradation speed, the present invention utilizes the nano titanium oxide having absorption, cross-linking starch is fixed in the load of silicon sol mixing solutions, 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, and improve the consumption of cross-linking starch, reduce production cost, nano titanium oxide also has promotion photocatalytic degradation and excellent wetting ability, the features such as germ resistance, auxiliary quickening polyethylene degradation, the mulch film film forming properties that this invention prepares is good, absorbent ventilate, and porous network structure can accelerate the breeding of microorganism, accelerates degraded, 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 8, nano titanium oxide 9, sodium polyacrylate 1.5, solid content are silicon sol 10, ethylene-acrylic acid copolymer 4, carboxymethyl chitosan 1.2, alkyl glycoside 0.1, silane coupling agent 0.1, the water 30 of 20%.
The preparation method of this degradative plastic film is:
(1) first alkyl glycoside, cm-chitosan are dropped into and be 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, nano titanium oxide is dropped in mixed solution, by gained slurry grinding distribution 45min after preliminary mixing, finally by gained material warm air drying, remove moisture completely, obtain the loaded cross-linked composites of starch of nano titanium oxide for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained nano titanium oxide 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) | 19.0 |
| Tensile strength (transverse direction) | 17.4 |
| Transmittance | 84.5% |
| 30d landfill rate of weight loss | 21.8% |
| 120d landfill rate of weight loss | 46.5% |
Claims (2)
1. the Low Density Polyethylene degradative plastic film by the loaded cross-linked starch conversion of nano titanium oxide, 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 6-9, nano titanium oxide 8-10, sodium polyacrylate 1-2, 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 30-35.
2. a kind of preparation method by the Low Density Polyethylene degradative plastic film of the loaded cross-linked starch conversion of nano titanium oxide as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first alkyl glycoside, cm-chitosan are dropped into and be 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, nano titanium oxide 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 nano titanium oxide for subsequent use;
(2) the loaded cross-linked composites of starch of step (1) gained nano titanium oxide 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 |
|---|---|---|---|
| CN201510442347.6A CN105017617A (en) | 2015-07-23 | 2015-07-23 | Nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442347.6A CN105017617A (en) | 2015-07-23 | 2015-07-23 | Nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and preparation method thereof |
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| CN105017617A true CN105017617A (en) | 2015-11-04 |
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| CN201510442347.6A Pending CN105017617A (en) | 2015-07-23 | 2015-07-23 | Nanometer-titanium-dioxide-supported crosslinked-starch-modified low-density-polyethylene degradation mulch film and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285567A (en) * | 2018-02-25 | 2018-07-17 | 柴迪汉 | A kind of polyvinyl oleophobic material and preparation method thereof |
| CN109181076A (en) * | 2018-09-20 | 2019-01-11 | 黄旭东 | A kind of preparation method of mould proof antifog polyethylene preservative film |
| CN111499451A (en) * | 2020-03-31 | 2020-08-07 | 四川绿蕴沙环保科技有限公司 | Ecological restoration material and ecological restoration method for plateau deteriorated grassland |
| CN113278213A (en) * | 2021-05-26 | 2021-08-20 | 深圳市旭扬兴业科技有限公司 | Environment-friendly sphygmomanometer inflatable bag and preparation method thereof |
| CN114276600A (en) * | 2021-12-23 | 2022-04-05 | 南通宝加利新材料有限公司 | Preparation method of degradable PE film |
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| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| CN103254490A (en) * | 2013-05-30 | 2013-08-21 | 河北麦森钛白粉有限公司 | Preparation process of double-degradation agricultural film |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285567A (en) * | 2018-02-25 | 2018-07-17 | 柴迪汉 | A kind of polyvinyl oleophobic material and preparation method thereof |
| CN109181076A (en) * | 2018-09-20 | 2019-01-11 | 黄旭东 | A kind of preparation method of mould proof antifog polyethylene preservative film |
| CN111499451A (en) * | 2020-03-31 | 2020-08-07 | 四川绿蕴沙环保科技有限公司 | Ecological restoration material and ecological restoration method for plateau deteriorated grassland |
| CN113278213A (en) * | 2021-05-26 | 2021-08-20 | 深圳市旭扬兴业科技有限公司 | Environment-friendly sphygmomanometer inflatable bag and preparation method thereof |
| CN114276600A (en) * | 2021-12-23 | 2022-04-05 | 南通宝加利新材料有限公司 | Preparation method of degradable PE film |
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