CN105924917A - Completely-biodegradable agricultural mulching film - Google Patents
Completely-biodegradable agricultural mulching film Download PDFInfo
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- CN105924917A CN105924917A CN201610564205.1A CN201610564205A CN105924917A CN 105924917 A CN105924917 A CN 105924917A CN 201610564205 A CN201610564205 A CN 201610564205A CN 105924917 A CN105924917 A CN 105924917A
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The invention relates to the technical field of mulching film production, and concretely relates to a completely-biodegradable agricultural mulching film. The completely-biodegradable agricultural mulching film comprises, by weight, 50-70 parts of a poly(3-hydroxybutyrate) and polyhydroxyvalerate copolymer, 10-15 parts of polybutylene succinate, 0.5-2 parts of acetylferrocene, 1-3 parts of a polymeric hindered amine light stabilizer, 0.5-3 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazol, 5-8 parts of bentonite and 4-8 parts of carboxymethylcellulose sodium. The agricultural mulching film can be completely degraded, and has the advantages of good mechanical stress resistance, good wet resistance, environmental protection and no pollution.
Description
Technical field
The present invention relates to mulch film production technical field, be specifically related to the agricultural mulching of a kind of fully biodegradable.
Background technology
Along with the development of China's agricultural establishing in large scale technology, the demand that face, agricultural land covered with plastic film is called for short " mulch film " is the most increasing, and China has become the whole world agricultural " mulch film " first and consumed big country.At present, the mulch film of agricultural mulching many uses PE material, it is difficult to degraded, aging after become fragment, affect the structure of soil, fertilizer efficiency, both made troubles to farming, and increased the weight of " white pollution " problem further.
In order to make common agricultural mulching be easier to degraded, Chinese invention patent application publication No. CN 102329446 A discloses a kind of transparent starch-based degradable agricultural mulching film composite material, this invention is with cornstarch as main base, make product degradable, mulch film mechanical resistant stress and moisture resistance that this invention provides are poor, not being suitable for the applied environment that agricultural mulching is complicated and changeable, realistic scale is low.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of being completely degraded, mechanical resistant stress and moisture resistance more preferable Environmental-protection agricultural mulch film.
For realizing object above, the present invention is achieved by the following technical programs:
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 50-70 part, poly butylene succinate 10-15 part, acetylferrocene 0.5-2 part, polymerized hindered amine light stabilizer 1-3 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 0.5-3 part, bentonite 5-8 part, sodium carboxymethylcellulose 4-8 part.
Further, the agricultural mulching of described fully biodegradable, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 54-72 part, poly butylene succinate 12-14 part, acetylferrocene 0.8-1.5 part, polymerized hindered amine light stabilizer 1-2 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 1-2 part, bentonite 6-7 part, sodium carboxymethylcellulose 5-6 part.
Further, the agricultural mulching of described fully biodegradable, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 72 parts, poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts.
Further, in described poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%.
Further, described poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer molecular weight are 7000-9000.
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 72 parts, poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts, straw pulp or wood pulp 3 parts.
Further, the production method of the agricultural mulching of described fully biodegradable, step is as follows: after weighing each raw material by weight, join it in high-speed mixer, mix, it is then added in double screw extruder plastify extruding pelletization and obtains complete biodegradable film material, further inflation film.
The present invention must have the beneficial effects that:
1. the present invention all uses renewable raw material, after this mulch film is discarded, flexible polymer chain in material can be decomposed into little molecule by bacteriogenic enzyme, these little molecules can be by microbial digestion together with organic material, generate water, carbon dioxide and the living beings of environmentally safe, it is achieved degradable.
2., compared with the biological plastics mulch film that tradition uses Starch Production, mulch film mechanical resistant stress and moisture resistance that the present invention provides are more preferable.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with embodiments of the invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment
1
:
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: molecular weight is poly 3-hydroxy butyrate and the poly-hydroxyl pentanoate copolymer 72 parts of 7000-9000, wherein, in poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%；Poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts.
Its production method, step is as follows: after weighing each raw material by weight, joins it in high-speed mixer, mixes, and is then added in double screw extruder plastify extruding pelletization and obtains complete biodegradable film material, further inflation film.
Embodiment
2
:
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: molecular weight is poly 3-hydroxy butyrate and the poly-hydroxyl pentanoate copolymer 50 parts of 7000-9000, wherein, in poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%；Poly butylene succinate 15 parts, acetylferrocene 0.5 part, polymerized hindered amine light stabilizer 3 parts, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 0.5 part, bentonite 8 parts, sodium carboxymethylcellulose 4 parts.
Its production method is with embodiment 1.
Embodiment
3
:
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: molecular weight is poly 3-hydroxy butyrate and the poly-hydroxyl pentanoate copolymer 54 parts of 7000-9000, wherein, in poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%；Poly butylene succinate 12 parts, acetylferrocene 1.5 parts, polymerized hindered amine light stabilizer 2 parts, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 1 part, bentonite 6 parts, sodium carboxymethylcellulose 6 parts.
Its production method is with embodiment 1.
Embodiment
4
:
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: molecular weight is poly 3-hydroxy butyrate and the poly-hydroxyl pentanoate copolymer 70 parts of 7000-9000, wherein, in poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%；Poly butylene succinate 10 parts, acetylferrocene 2 parts, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 3 parts, bentonite 5 parts, sodium carboxymethylcellulose 8 parts.
Its production method is with embodiment 1.
Each 10 parts of the mulch film that random Example 1-4 produces, uses ISO0527 method of testing that it is carried out performance test, and test result is as shown in the table:
| Stretch modulus (MPa) | Hot strength (MPa) | Ultimate strength (MPa) | Ultimate elongation (%) | Drop impact (g) | |
| Embodiment 1 | 190-350 | 25-30 | 25-30 | 195-425 | 250 |
| Embodiment 2 | 185-345 | 30-35 | 25-30 | 180-415 | 260 |
| Embodiment 3 | 225-360 | 20-30 | 25-35 | 185-420 | 255 |
| Embodiment 4 | 185-355 | 25-30 | 30-35 | 190-420 | 250 |
Embodiment
5
A kind of agricultural mulching of fully biodegradable, it is made up of the raw material of following weight portion: molecular weight is poly 3-hydroxy butyrate and the poly-hydroxyl pentanoate copolymer 72 parts of 7000-9000, poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts, straw pulp or wood pulp 3 parts.
Its production method is with embodiment 1.
The mulch film 10 parts that random Example 5 is produced, uses ISO0527 method of testing that it is carried out performance test, and test result is as shown in the table:
| Stretch modulus (MPa) | Hot strength (MPa) | Ultimate strength (MPa) | Ultimate elongation (%) | Drop impact (g) | |
| Embodiment 5 | 170-340 | 22-32 | 25-30 | 185-415 | 245 |
Being contrasted by the experimental result of embodiment 5 experimental results with embodiment 1-4 gained, the mulch film made by embodiment 5 is the most consistent with the result of embodiment 1-4 on properties, it is possible to fully meet needs.
But the mulch film that embodiment 5 is provided is shown by test on degradation speed, its Plastic-film disintegration speed provided relative to embodiment 1-4 is greatly improved, the mulch film general degradable time that embodiment 1-4 is provided is 3-6 month, and shown by test, the mulch film that embodiment 5 is provided typically can be degradable within 3 months, and its degradation efficiency significantly improves.
The mulch film that embodiment 5 is provided is that applicant adds Chinese white poplar wood pulp gained in extrusion process by mistake, but through overtesting, its degradation speed is largely increased, but the concrete principle that degradation speed improves waits to continue research.In subsequent process, applicant uses again addition straw straw pulp to test, and result of the test is basically identical with addition Chinese white poplar wood pulp result.
The invention have the benefit that the present invention all uses renewable raw material, after this mulch film is discarded, flexible polymer chain in material can be decomposed into little molecule by bacteriogenic enzyme, these little molecules can be by microbial digestion together with organic material, generate water, carbon dioxide and the living beings of environmentally safe, it is achieved degradable.This mulch film is compared with the biological plastics mulch film that tradition uses Starch Production, and mechanical resistant stress and moisture resistance are more preferable.
Above example only in order to technical scheme to be described, is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the agricultural mulching of a fully biodegradable, it is characterized in that, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 50-70 part, poly butylene succinate 10-15 part, acetylferrocene 0.5-2 part, polymerized hindered amine light stabilizer 1-3 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 0.5-3 part, bentonite 5-8 part, sodium carboxymethylcellulose 4-8 part.
2. the agricultural mulching of fully biodegradable as claimed in claim 1, it is characterized in that, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 54-72 part, poly butylene succinate 12-14 part, acetylferrocene 0.8-1.5 part, polymerized hindered amine light stabilizer 1-2 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 1-2 part, bentonite 6-7 part, sodium carboxymethylcellulose 5-6 part.
3. the agricultural mulching of fully biodegradable as claimed in claim 2, it is characterized in that, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 72 parts, poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts.
4. the agricultural mulching of the fully biodegradable as according to any one of claim 1-3, it is characterised in that in described poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer, the content of poly 3-hydroxy butyrate is 65-75%.
The agricultural mulching of fully biodegradable the most as described in any of claims 4, it is characterised in that described poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer molecular weight are 7000-9000.
6. the agricultural mulching of a fully biodegradable, it is made up of the raw material of following weight portion: poly 3-hydroxy butyrate and poly-hydroxyl pentanoate copolymer 72 parts, poly butylene succinate 14 parts, acetylferrocene 0.8 part, polymerized hindered amine light stabilizer 1 part, 2-(2-hydroxyl-5-aminomethyl phenyl) BTA 2 parts, bentonite 7 parts, sodium carboxymethylcellulose 5 parts, straw pulp or wood pulp 3 parts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610564205.1A CN105924917A (en) | 2016-07-18 | 2016-07-18 | Completely-biodegradable agricultural mulching film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610564205.1A CN105924917A (en) | 2016-07-18 | 2016-07-18 | Completely-biodegradable agricultural mulching film |
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| CN105924917A true CN105924917A (en) | 2016-09-07 |
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| CN201610564205.1A Pending CN105924917A (en) | 2016-07-18 | 2016-07-18 | Completely-biodegradable agricultural mulching film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181252A (en) * | 2018-08-09 | 2019-01-11 | 合肥必更赢科技有限公司 | A kind of degradable agricultural film preparation method for cane planting |
| CN110437504A (en) * | 2019-08-13 | 2019-11-12 | 湖南工业大学 | A kind of biomass-based curtain coating antibacterial film of two-layer compound and its preparation process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627151A (en) * | 2013-12-10 | 2014-03-12 | 浙江渤海卫生用品有限公司 | Polyester full-biodegradable mulch film |
| CN104072952A (en) * | 2014-06-17 | 2014-10-01 | 浙江杭州鑫富药业股份有限公司 | Full-biodegradable mulching film with excellent transverse and longitudinal tearing property |
| CN105075751A (en) * | 2015-07-27 | 2015-11-25 | 陆海荣 | Double-degradable environmental protecting mulching film and manufacturing method thereof |
-
2016
- 2016-07-18 CN CN201610564205.1A patent/CN105924917A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627151A (en) * | 2013-12-10 | 2014-03-12 | 浙江渤海卫生用品有限公司 | Polyester full-biodegradable mulch film |
| CN104072952A (en) * | 2014-06-17 | 2014-10-01 | 浙江杭州鑫富药业股份有限公司 | Full-biodegradable mulching film with excellent transverse and longitudinal tearing property |
| CN105075751A (en) * | 2015-07-27 | 2015-11-25 | 陆海荣 | Double-degradable environmental protecting mulching film and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181252A (en) * | 2018-08-09 | 2019-01-11 | 合肥必更赢科技有限公司 | A kind of degradable agricultural film preparation method for cane planting |
| CN109181252B (en) * | 2018-08-09 | 2020-06-12 | 山东隆昌塑业有限公司 | Preparation method of degradable agricultural mulching film for sugarcane planting |
| CN110437504A (en) * | 2019-08-13 | 2019-11-12 | 湖南工业大学 | A kind of biomass-based curtain coating antibacterial film of two-layer compound and its preparation process |
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Application publication date: 20160907 |