CN105001493A - Low-density polyethylene degradable mulching film which is modified by carrying cross-linked starch through nanometer sepiolite and is capable of adsorbing heavy metal and preparing method of low-density polyethylene degradable mulching film - Google Patents
Low-density polyethylene degradable mulching film which is modified by carrying cross-linked starch through nanometer sepiolite and is capable of adsorbing heavy metal and preparing method of low-density polyethylene degradable mulching film Download PDFInfo
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- CN105001493A CN105001493A CN201510442384.7A CN201510442384A CN105001493A CN 105001493 A CN105001493 A CN 105001493A CN 201510442384 A CN201510442384 A CN 201510442384A CN 105001493 A CN105001493 A CN 105001493A
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- density polyethylene
- 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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- 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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- 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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
-
- 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
- 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
-
- 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
- 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)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (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 sepiolite and is capable of adsorbing heavy metal and a preparing method of the low-density polyethylene degradable mulching film. For the mulching film master batch, a complex solution of nanometer sepiolite, 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 overcome, the using amount of the cross-linked starch is further increased, and thus the production cost can be reduced; the mixed trisodium ethylenediaminedisuccinic acid has the adsorption effect on the heavy metal in soil, and thus improvement of the soil environment can be assisted; the mulching film prepared through the method is capable of absorbing water, breathable, capable of preserving heat and resisting cold, high in attaching force with soil, beneficial to microorganism reproduction, capable of 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 by nanometer sepiolite supported crosslinked starch modified can the Low Density Polyethylene degradative plastic film and preparation method thereof of Adsorption of Heavy Metals.
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 sepiolite supported crosslinked starch modified energy Adsorption of Heavy Metals of nanometer, 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 by nanometer sepiolite supported crosslinked starch modified can the Low Density Polyethylene degradative plastic film of Adsorption of Heavy Metals, 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, nanometer sepiolite 8-12, ethylenediamine disuccinic acid trisodium 0.01-0.02, 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 by nanometer sepiolite supported crosslinked starch modified can the preparation method of Low Density Polyethylene degradative plastic film of Adsorption of Heavy Metals, 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, nanometer sepiolite 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 nanometer sepiolite supported cross-linking starch mixture for subsequent use;
(2) sepiolite supported for step (1) gained nanometer cross-linking starch mixture 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 nanometer sepiolite 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, wherein the consumption of cross-linking starch improves further, and then can production cost be reduced, the ethylenediamine disuccinic acid trisodium of blending has adsorption to the heavy metal in soil, can assist and improve edatope, the mulch film absorbent ventilate that this invention prepares, insulation is cold-resistant, strong with soil adhesive force, contributes to microbial reproduction, can improve edatope, and degradation speed is faster, not containing hazardous and noxious substances, 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 50, cross-linking starch 7, nanometer sepiolite 10, ethylenediamine disuccinic acid trisodium 0.01, 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 25%.
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, nanometer sepiolite 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 nanometer sepiolite supported cross-linking starch mixture for subsequent use;
(2) sepiolite supported for step (1) gained nanometer cross-linking starch mixture 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) | 19.5 |
| Tensile strength (transverse direction) | 17.2 |
| Transmittance | 84.5% |
| 30d landfill rate of weight loss | 20.8% |
| 120d landfill rate of weight loss | 48.2% |
Claims (2)
1. one kind by nanometer sepiolite supported crosslinked starch modified can the Low Density Polyethylene degradative plastic film of Adsorption of Heavy Metals, 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, nanometer sepiolite 8-12, ethylenediamine disuccinic acid trisodium 0.01-0.02, 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. as claimed in claim 1 a kind of by nanometer sepiolite supported crosslinked starch modified can the preparation method of Low Density Polyethylene degradative plastic film of Adsorption of Heavy Metals, 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, nanometer sepiolite 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 nanometer sepiolite supported cross-linking starch mixture for subsequent use;
(2) sepiolite supported for step (1) gained nanometer cross-linking starch mixture 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442384.7A CN105001493A (en) | 2015-07-23 | 2015-07-23 | Low-density polyethylene degradable mulching film which is modified by carrying cross-linked starch through nanometer sepiolite and is capable of adsorbing heavy metal and preparing method of low-density polyethylene degradable mulching film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510442384.7A CN105001493A (en) | 2015-07-23 | 2015-07-23 | Low-density polyethylene degradable mulching film which is modified by carrying cross-linked starch through nanometer sepiolite and is capable of adsorbing heavy metal and preparing method of low-density polyethylene degradable mulching film |
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| CN105001493A true CN105001493A (en) | 2015-10-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087581A (en) * | 2016-06-20 | 2016-11-09 | 仇颖莹 | A kind of preparation method of flame-proof antibiotic composite air filter paper |
| CN106190151A (en) * | 2016-07-08 | 2016-12-07 | 张丽英 | A kind of cadmium pollution soil renovation agent and preparation method thereof |
| CN106810740A (en) * | 2016-12-02 | 2017-06-09 | 长兴天晟能源科技有限公司 | A kind of functional agglomerate for improving polyethylene ground film solid water ability |
| CN109867850A (en) * | 2019-03-15 | 2019-06-11 | 成都新柯力化工科技有限公司 | A kind of starch-based degradable packaging film plastic matrix and preparation method |
| CN116284912A (en) * | 2023-04-20 | 2023-06-23 | 南京工程学院 | Mulching film for reducing heavy metal effective state and preparation method thereof |
| CN116285253A (en) * | 2023-03-21 | 2023-06-23 | 贵州省材料产业技术研究院 | Thermal-insulation biodegradable water-permeable mulching film and preparation method thereof |
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| 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 |
| CN104384179A (en) * | 2014-04-28 | 2015-03-04 | 华北电力大学 | In-situ restoration apparatus for heavy metal pollutants in soil and restoration method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087581A (en) * | 2016-06-20 | 2016-11-09 | 仇颖莹 | A kind of preparation method of flame-proof antibiotic composite air filter paper |
| CN106190151A (en) * | 2016-07-08 | 2016-12-07 | 张丽英 | A kind of cadmium pollution soil renovation agent and preparation method thereof |
| CN106810740A (en) * | 2016-12-02 | 2017-06-09 | 长兴天晟能源科技有限公司 | A kind of functional agglomerate for improving polyethylene ground film solid water ability |
| CN109867850A (en) * | 2019-03-15 | 2019-06-11 | 成都新柯力化工科技有限公司 | A kind of starch-based degradable packaging film plastic matrix and preparation method |
| CN109867850B (en) * | 2019-03-15 | 2021-05-07 | 成都新柯力化工科技有限公司 | Plastic master batch for starch-based degradable packaging film and preparation method thereof |
| CN116285253A (en) * | 2023-03-21 | 2023-06-23 | 贵州省材料产业技术研究院 | Thermal-insulation biodegradable water-permeable mulching film and preparation method thereof |
| CN116285253B (en) * | 2023-03-21 | 2024-04-26 | 贵州省材料产业技术研究院 | Thermal-insulation biodegradable water-permeable mulching film and preparation method thereof |
| CN116284912A (en) * | 2023-04-20 | 2023-06-23 | 南京工程学院 | Mulching film for reducing heavy metal effective state and preparation method thereof |
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Application publication date: 20151028 |