CN107722445A - Controllable composite degradation weed removal mulch film and preparation method thereof - Google Patents
Controllable composite degradation weed removal mulch film and preparation method thereof Download PDFInfo
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- CN107722445A CN107722445A CN201711148728.9A CN201711148728A CN107722445A CN 107722445 A CN107722445 A CN 107722445A CN 201711148728 A CN201711148728 A CN 201711148728A CN 107722445 A CN107722445 A CN 107722445A
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- Prior art keywords
- mulch film
- weed removal
- composite degradation
- controllable composite
- removal mulch
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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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- 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)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Protection Of Plants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of controllable composite degradation weed removal mulch film and preparation method thereof, in parts by weight, including the following raw material component：40~70 parts of compound resin, 1~3 part of surface modifier, 20~50 parts of filler, 0.1~0.5 part of rare-earth stearate compound, 5~10 parts of aliphatic polyester, 1~3 part of compatilizer, 1~5 part of herbicidal active ingredient, wherein, the compound resin mass ratio is 1~10：2：1 linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and metallocene PE.Controllable composite degradation weed removal mulch film provided by the invention, can suppress weed growth, possess good light/biological composite degradable performance, according to crop growth environment and cycle regulating degradation cycle, can meet the production requirement of modern agriculture.
Description
Technical field
The present invention relates to film article, more particularly to controllable composite degradation weed removal mulch film and preparation method thereof.
Background technology
Covering with ground sheeting is a kind of agriculture cultivation technology, its water conservation heat effect agricultural has been generated it is great, positive
Influence.But still a series of problems being present, such as substantial amounts of mulch film fragment can be remained in soil, and under field conditions (factors), tradition
Polyethylene ground film be difficult degraded, not only break up soil texture, influence crop growth, can also cause Heavy environmental pollution.
At present, solving mulch film residue problem mainly has two methods of recovery and degraded.The recovery of mulch film need to put into a large amount of people
Power and material resources, cost is higher, and reuse ratio is relatively low after recovery.And to still have cost high, durable for existing degradative plastic film
Property it is poor, intensity is not high, degraded not exclusively, the problems such as degradation cycle is uncontrollable.In addition, the growth of weeds is unfavorable for the life of crops
It is long, and existing mulch film is without the function of suppressing weed growth.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of controllable composite degradation weed removal mulch film, with possessing common plasticses
The mechanical property of film and moisturizing such as heat at the function, and cost is low, can suppress weed growth, and it is multiple to possess good light/biology
Degradation property is closed, the production requirement of modern agriculture according to crop growth environment and cycle regulating degradation time, can also be met.
A kind of controllable composite degradation weed removal mulch film, in parts by weight including the following raw material component：
Wherein, the compound resin mass ratio is 1~10：2：1 linear low density polyethylene (LLDPE) (LLDPE), low density polyethylene
Alkene (LDPE) and metallocene PE (mPE).
In one of the embodiments, the compound resin mass ratio is 4~6：2：1 linear low density polyethylene (LLDPE)
(LLDPE), low density polyethylene (LDPE) (LDPE) and metallocene PE (mPE).
In one of the embodiments, the surface modifier is that mass ratio is 1~5：1 stearic acid and titanate esters.Matter
Measure ratio preferably 2~3：1.
In one of the embodiments, described aliphatic polyester is one kind in PLA, poly butylene succinate
It is or a variety of.
In one of the embodiments, described rare-earth stearate compound is one kind in cerium stearate and Lanthanum Stearate
It is or a variety of.
In one of the embodiments, the filler is the calcium carbonate powder of 1500~2000 mesh.
In one of the embodiments, controllable composite degradation weed removal mulch film in parts by weight, including the following raw material component：
In one of the embodiments, described compatilizer is in maleic anhydride grafted polyethylene and ethylene vinyl acetate
One or more.
In one of the embodiments, the herbicidal active ingredient be alachlor, quizalofopethyl and prometryn in one kind or
It is a variety of.
The present invention also provides the preparation method of described controllable composite degradation weed removal mulch film, comprises the following steps：
(1) surface modifier, filler and rare-earth stearate compound are added in mixer, stirring；
(2) compound resin, aliphatic polyester, compatilizer and herbicidal active ingredient are added in step (1) resulting material, is stirred
Mix；
(3) step (2) resulting material is kneaded, extruded, is granulated, blows film forming, produce the controllable composite degradation
Weed removal mulch film.
In one of the embodiments, described stir of step (1) is：Be heated to 90~110 DEG C, in speed be 450~
550rpm stirs 5~15min；Step (2) it is described stirring be：It is that 150~250rpm stirs 2~8min in speed.
In one of the embodiments, the temperature of step (3) described mixing is 180~220 DEG C.
In one of the embodiments, the temperature of step (3) the blowing film forming is 180~220 DEG C.
Compared with prior art, the invention has the advantages that：
Controllable composite degradation weed removal mulch film of the present invention, on the basis of each raw material components ratio is rationally controlled, with
Specified weight than LLDPE, LDPE and mPE as compound resin, coordinate aliphatic polyester, using rare-earth stearate compound as
Stabilizer, and add herbicidal activity component and be engaged with above-mentioned each raw material components, the same of Plastic-film disintegration effect can ensured
When, mulch film is possessed weeding function, be more beneficial for plant growth, meet the production requirement of modern agriculture.And thus it is prepared
Controllable composite degradation weed removal mulch film, possess good light/biological composite degradable performance, can also according to crop growth environment and
Cycle regulating degradation time, degraded is complete, and degradation cycle is controllable, meets the production requirement of modern agriculture, and its water conservation increases in addition
Temp effect is good, and intensity is high, durability is good.
Further, fit quality ratio is 1~5：The compound surface modifier of 1 stearic acid and titanate esters can optimize institute
State the weeding function of controllable composite degradation weed removal mulch film and the controlled degradation function in cycle.
Embodiment
Controllable composite degradation weed removal mulch film of the present invention and preparation method thereof is made below in conjunction with specific embodiment further
Detailed description.
The linear low density polyethylene (LLDPE) (LLDPE) used in the embodiment of the present invention, melt index (MI) are 1.0~2.0g/
min；
Low density polyethylene (LDPE) (LDPE), MI are 6.0~8.0g/min；
Metallocene PE (mPE), MI are 2.0~4.0g/min.
Each raw material components used in the embodiment of the present invention are commercially available prod.
Embodiment 1
A kind of controllable composite degradation weed removal mulch film of the present embodiment, in parts by weight, including the following raw material component：
(LLDPE/LDPE/mPE mass ratioes are 6 to compound resin:2:1) 70 parts, compound surface-treating agent (stearic acid/metatitanic acid
Ester mass ratio is 3:1) 1 part, 20 parts of calcium carbonate powder (1500 mesh), 0.5 part of cerium stearate, 10 parts of PLA, maleic anhydride connects
3 parts of polyethylene of branch, 5 parts of alachlor.
The preparation method of above-mentioned controllable composite degradation weed removal mulch film, comprises the following steps：
(1) compound surface-treating agent, calcium carbonate powder and rare-earth stearate compound are added in high-speed mixer, stirring
It is heated to 100 DEG C of high speed 500rpm stirrings 10min；
(2) low speed mixer and then by step (1) resulting material is put into, adds compound resin, aliphatic polyester, compatible
Agent and alachlor, 200rpm stirring 5min dischargings；
(3) step (2) resulting material is added into double screw extruder, in 200 DEG C of mixing extrusions, is granulated and function mother is made
Material, masterbatch addition inflation film manufacturing machine is blow molded into film, 200 DEG C of blown film temperature；Produce the degradable composite material mulch film.
Embodiment 2
A kind of controllable composite degradation weed removal mulch film of the present embodiment, in parts by weight, including the following raw material component：
(LLDPE/LDPE/mPE mass fractions ratio is 4 to compound resin:2:1) 40 parts, compound surface-treating agent is (stearic
Acid/titanate esters mass ratio is 2:1) 3 parts, 50 parts of calcium carbonate powder (2000 mesh), 0.1 part of Lanthanum Stearate, poly-succinic acid-butanediol
5 parts of ester, 1 part of ethylene vinyl acetate, 1 part of quizalofopethyl.
The preparation method of above-mentioned controllable composite degradation weed removal mulch film is the same as embodiment 1.
Embodiment 3
A kind of controllable composite degradation weed removal mulch film of the present embodiment, in parts by weight, including the following raw material component：
(LLDPE/LDPE/mPE mass fractions ratio is 6 to compound resin:2:1) 50 parts, compound surface-treating agent is (stearic
Acid/titanate esters mass ratio is 3:1) 2 parts, 40 parts of calcium carbonate powder (1500 mesh), 0.3 part of cerium stearate, 7 parts of PLA, ethene
2 parts of vinylacetate, 3 parts of prometryn.
The preparation method of above-mentioned controllable composite degradation weed removal mulch film is the same as embodiment 1.
Embodiment 4
A kind of controllable composite degradation weed removal mulch film of the present embodiment, in parts by weight, including the following raw material component：
(LLDPE/LDPE/mPE mass fractions ratio is 4 to compound resin:2:1) 60 parts, compound surface-treating agent is (stearic
Acid/titanate esters mass fraction ratio is 2:1) 2 parts, 30 parts of calcium carbonate powder (2000 mesh), 0.4 part of Lanthanum Stearate, PLA 8
Part, 2 parts of maleic anhydride grafted polyethylene, 3 parts of alachlor.
The preparation method of above-mentioned controllable composite degradation weed removal mulch film is the same as embodiment 1.
Embodiment 5
A kind of controllable composite degradation weed removal mulch film of the present embodiment, in parts by weight, including the following raw material component：
(LLDPE/LDPE/mPE mass fractions ratio is 6 to compound resin:2:1) 60 parts, compound surface-treating agent is (stearic
Acid/titanate esters mass ratio is 3:1) 2 parts, 60 parts of calcium carbonate powder (2000 mesh), 0.3 part of cerium stearate, poly-succinic acid-butanediol
6 parts of ester, 2 parts of horse ethylene vinyl acetate, 3 parts of quizalofopethyl.
The preparation method of above-mentioned controllable composite degradation weed removal mulch film is the same as embodiment 1.
Comparative example 1
The mulch film of this comparative example, its raw material components and preparation method similar embodiment 1, difference is：Only with LDPE, and
The alachlor is not used.
The performance data of 1. different films of table
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. controllable composite degradation weed removal mulch film, it is characterised in that in parts by weight, including the following raw material component：Wherein, the compound resin is that mass ratio is 1~10：2：1 linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and cyclopentadienyl gold Belong to polyethylene.
- 2. controllable composite degradation weed removal mulch film according to claim 1, it is characterised in that the compound resin is mass ratio For 4~6：2：1 linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and metallocene PE.
- 3. controllable composite degradation weed removal mulch film according to claim 1, it is characterised in that the surface modifier is quality Than for 1~5：1 stearic acid and titanate esters.
- 4. controllable composite degradation weed removal mulch film according to claim 1, it is characterised in that described aliphatic polyester is poly- One or more in lactic acid, poly butylene succinate.
- 5. controllable composite degradation weed removal mulch film according to claim 1, it is characterised in that described rare-earth stearate chemical combination Thing is the one or more in cerium stearate, Lanthanum Stearate.
- 6. the controllable composite degradation weed removal mulch film according to claim any one of 1-5, it is characterised in that the filler is The calcium carbonate powder of 1500~2000 mesh.
- 7. the controllable composite degradation weed removal mulch film according to claim any one of 1-5, it is characterised in that described compatilizer For the one or more in maleic anhydride grafted polyethylene, ethylene vinyl acetate.
- 8. the controllable composite degradation weed removal mulch film according to claim any one of 1-5, it is characterised in that the activity of weeding Component is the one or more in alachlor, quizalofopethyl, prometryn.
- 9. the preparation method of the controllable composite degradation weed removal mulch film described in claim any one of 1-8, it is characterised in that including such as Lower step：(1) surface modifier, filler and rare-earth stearate compound are added in mixer, stirring；(2) compound resin, aliphatic polyester, compatilizer and herbicidal active ingredient are added in step (1) resulting material, stirred Mix；(3) step (2) resulting material is kneaded, extruded, is granulated, blows film forming, produce the controllable composite degradation weeding Mulch film.
- 10. the preparation method of controllable composite degradation weed removal mulch film according to claim 9, it is characterised in that step (1) institute Stating stirring is：90~110 DEG C are heated to, is that 450~550rpm stirs 5~15min in speed；Step (2) it is described stirring be：In Speed is that 150~250rpm stirs 2~8min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711148728.9A CN107722445A (en) | 2017-11-17 | 2017-11-17 | Controllable composite degradation weed removal mulch film and preparation method thereof |
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| CN201711148728.9A CN107722445A (en) | 2017-11-17 | 2017-11-17 | Controllable composite degradation weed removal mulch film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370036A (en) * | 2018-10-26 | 2019-02-22 | 苏州福慧材料科技有限公司 | A kind of Biodegradable mulch of high-barrier and preparation method thereof |
Citations (1)
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|---|---|---|---|---|
| CN106947179A (en) * | 2017-02-22 | 2017-07-14 | 阳光盛景（北京）生态科技股份有限公司 | A kind of degradative plastic film for filler of being degraded containing string |
-
2017
- 2017-11-17 CN CN201711148728.9A patent/CN107722445A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947179A (en) * | 2017-02-22 | 2017-07-14 | 阳光盛景（北京）生态科技股份有限公司 | A kind of degradative plastic film for filler of being degraded containing string |
Non-Patent Citations (2)
| Title |
|---|
| 中国农用塑料应用技术学会主编: "《新编地膜覆盖栽培技术大全》", 28 February 1998 * |
| 吴培熙等编著: "《塑料制品生产工艺手册 第2版》", 31 May 1998 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370036A (en) * | 2018-10-26 | 2019-02-22 | 苏州福慧材料科技有限公司 | A kind of Biodegradable mulch of high-barrier and preparation method thereof |
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Application publication date: 20180223 |