CN105838048A - Special fully-biodegradable mulch film material conducive to soil moisture preservation and preparation method of special fully-biodegradable mulch film material - Google Patents
Special fully-biodegradable mulch film material conducive to soil moisture preservation and preparation method of special fully-biodegradable mulch film material Download PDFInfo
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- CN105838048A CN105838048A CN201610391841.9A CN201610391841A CN105838048A CN 105838048 A CN105838048 A CN 105838048A CN 201610391841 A CN201610391841 A CN 201610391841A CN 105838048 A CN105838048 A CN 105838048A
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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
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention belongs to the technical field of macromolecules and discloses a special fully-biodegradable mulch film material conducive to soil moisture preservation and a preparation method of the special fully-biodegradable mulch film material. The material comprises a first component and a second component and is characterized in that the second component is an ethylene/ethenol copolymer, and the first component is prepared from, by mass, 200-450 parts of polylactic acid, 500-800 parts of poly(butyleneadipate-co-terephthalate), 2.5-5 parts of an antioxidant, 2.5-5 parts of an anti-ultraviolet agent, 50-80 parts of a plasticizer and 2-5 parts of erucyl amide. By a raw material ratio, a melted material is high in fluidity, excellent film forming property is achieved, products are high in toughness and tensile strength, and thus excellent-performance degradable much films thinner than 10micrometer can be produced; in addition, raw material airtightness is improved, excellent barrier property is achieved, moisture evaporation can be reduced, and a foundation is laid for preparation of the mulch films with excellent moisture preservation performances.
Description
Technical field
The invention belongs to technical field of macromolecules, be specifically related to a kind of be beneficial to soil moisture conservation whole life cycle design PP Pipe Compound and
Its preparation method.
Background technology
Mulching planting can make crop yield improve about 30%, in the arid area that northern China is vast, mulch film kind
The advantage planted is especially prominent so that mulching planting has obtained spread.According to statistics, China's mulch film consumption in 2011
125.5 ten thousand tons, area coverage reaches 300,000,000 mu；National mulch film consumption 136.2 ten thousand tons in 2013, culture underglass area more than 3.7 hundred million mu；
Plastic film mulching cultivation area more than 3.8 hundred million mu in 2014, mulch film year sales volume 142.8 ten thousand tons, annual consumption is all quickly increasing.
The currently used mulch film overwhelming majority is PE mulch film, and due to its non-biodegradable, mulching film planting is agriculture for China
While production is made that major contribution, using the passage of time with it, white pollution problems is the most serious, not only threatens
The ecological environment that we depend on for existence, mulch film residual also creates the underproduction of crops.White pollution problems must be solved as early as possible
Cause the great attention of associated specialist.
Developing in the recent period and be able to the whole life cycle design that non-petroleum base biodegradation material is raw material, it is typically in soil
After compost treatment 3 to 6 months, so that it may completely by the bacterial digestion in soil, even some composition can be broken down into has plant
The nutrients such as lactic acid, carbon dioxide and the water of benefit, completing raw material comes from nature, returns the most again in this is circulated throughout naturally
Journey, revolutionizes tradition PE plastics and is difficult to degraded, situation to Zinc fractions white pollution.
Along with the application of this emerging product of whole life cycle design, although finding that it solves white pollution problems, but
Moisture evaporation after using is too fast with loss, and soil moisture conservation performance is bad, affects growth and the yield of crop, have impact on this kind in turn
The popularization and application of mulch film.It is therefore desirable to those skilled in the art research and develop the whole life cycle design of a minimizing water loss,
Solving this problem, stand in the breach is its raw material development.
Summary of the invention
The technical problem to be solved be to provide a kind of be beneficial to soil moisture conservation whole life cycle design PP Pipe Compound and
Preparation method, by increasing capacitance it is possible to increase air-tightness, reduces water loss.
For solving above-mentioned technical problem, the technical scheme is that a kind of complete biodegradable ground being beneficial to soil moisture conservation of invention
Film special material, including the first component and second component, it is characterised in that: second component is ethylene/vinyl alcohol copolymer, first group
Divide and be made up of each raw material of following mass fraction:
Polylactic acid 200～450 parts
Poly terephthalic acid/tetramethylene adipate copolymer 500～800 parts
Antioxidant 2.5～5 parts
Ultraviolet (UV) resistant agent 2.5～5 parts
Plasticizer 50～80 parts
Erucyl amide 2～5 parts
First component is 750～790 mass parts by doses, and second component is 190～210 mass parts by doses.
Preferably, described first component is made up of each raw material of following mass fraction:
Polylactic acid 310 parts
Poly terephthalic acid/tetramethylene adipate copolymer 600 parts
3 parts of antioxidant
Ultraviolet (UV) resistant agent 3 parts
Plasticizer 60 parts
Erucyl amide 4 parts
First component is 784 mass parts by doses, and second component is 200 mass parts by doses.
Preferably, also including the 3rd component of 15～20 mass parts, the 3rd component is by each raw material group of following mass fraction
Become:
Polylactic acid 70～75 parts
Plasticizer 5～8 parts
Superfine carbon black 18～22 parts.
Preferably, described 3rd component is made up of each raw material of following mass fraction:
Polylactic acid 75 parts
Plasticizer 5 parts
Superfine carbon black 20 parts
3rd component is 16 mass parts by doses.
Preferably, described plasticizer is tributyl citrate.
Preferably, described antioxidant is 1010.
Preferably, described ultraviolet (UV) resistant agent is UV770.
Present invention also offers a kind of method preparing the above-mentioned whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation, its feature
It is: comprise the following steps:
(1) by each raw material high-speed stirred of the first component until mix homogeneously, then through dual-screw pelletizer melt blending post-tensioning
Bar, pelletizing, prepare the first component；
(2) each raw materials melt of the 3rd component is mediated, then through single screw pelletizer pelletize, prepare the 3rd component.
Preferably, in step (1), behind eight districts, during melt molding, arrive the head of dual-screw pelletizer, from
The temperature of A-P and correspondence is followed successively by: the first 150 DEG C of district, 165 DEG C of the secondth district, 175 DEG C of the 3rd district, the 4th district are to SECTOR-SEVEN
180 DEG C, Section Eight 170 DEG C and head 170 DEG C；
In step (2), prilling temperature is 180 DEG C.
Compared with prior art, the invention has the beneficial effects as follows:
1, the proportioning raw materials used can make melt have good mobility, and film property is preferable, goods toughness and tensile strength
Higher, it is thus possible to the degradable mulch that the excellent thickness of production performance is below 10 microns；Add the air-tightness of raw material simultaneously,
Barrier property is good, it is possible to reduce moisture evaporation, thus the mulch film for preparation soil moisture conservation function admirable is laid a good foundation.
2, due to the addition of the 3rd component, can prepare the mulch film with black bands, black bands is positioned between ridge, reduces ridge
Between photosynthesis, it is possible to the preferably growth of weeds between suppression ridge, improve the effective rate of utilization of crops nutrient.
3, during preparation component, the temperature in dual-screw pelletizer Zhong Ge district is arranged, it is possible to raw material is not decomposed
In the case of, there is good mobility, make density and the most more uniform component of size, be the premise bar preparing homogeneous mulch film
Part.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
Embodiment one
The present embodiment uses the 3rd component of the first component of 750 mass parts, the second component of 210 mass parts and 20 mass parts to make
For preparing the raw material of agricultural mulching.Wherein the preparation process of the first component is as follows:
By the polylactic acid of 200 mass parts, the poly terephthalic acid/tetramethylene adipate copolymer of 800 mass parts, 2.5 mass
Part 1010 type antioxidant, UV770 type ultraviolet (UV) resistant agent, the tributyl citrate of 80 mass parts and 2 mass parts of 5 mass parts
Erucyl amide mixes, and high-speed stirred makes its mix homogeneously in 10 minutes, and the material of mix homogeneously enters dual-screw pelletizer,
Tie rod, pelletizing after melt blending in dual-screw pelletizer, prepares the first component.Wherein, tributyl citrate is plasticizer, mustard
Acid amide is antiblocking agent.First component arrives the head of dual-screw pelletizer during melt molding behind eight districts,
It is followed successively by from the temperature of A-P and correspondence: the first 150 DEG C of district, 165 DEG C of the secondth district, 175 DEG C of the 3rd district, the 4th district are to SECTOR-SEVEN
180 DEG C, Section Eight 170 DEG C and head 170 DEG C.
The preparation process of the 3rd component is as follows:
The superfine carbon black of the polylactic acid of 70 mass parts, the tributyl citrate of 8 mass parts and 18 mass parts is mediated melted, through list
Screw pelletizer pelletize, prepares the 3rd component.Prilling temperature is 180 DEG C.
Above-mentioned superfine carbon black is nanoscale white carbon black, and the rotating speed of high-speed stirred is 600 revs/min.
Embodiment two
The present embodiment is that from the difference of embodiment one raw material dosage preparing the first component and the 3rd component is different.Take
The polylactic acid of 310 mass parts, the poly terephthalic acid/tetramethylene adipate copolymer of 600 mass parts, the 1010 of 3 mass parts
Type antioxidant, UV770 type ultraviolet (UV) resistant agent, the tributyl citrate of 60 mass parts and the erucyl amide of 4 mass parts of 3 mass parts
As the raw material preparing the first component.
Take the superfine carbon black of the polylactic acid of 75 mass parts, the tributyl citrate of 5 mass parts and 20 mass parts as system
The raw material of standby 3rd component.
Embodiment three
The present embodiment is that from the difference of embodiment one raw material dosage preparing the first component and the 3rd component is different.Take
The polylactic acid of 450 mass parts, the poly terephthalic acid/tetramethylene adipate copolymer of 500 mass parts, the 1010 of 5 mass parts
Type antioxidant, UV770 type ultraviolet (UV) resistant agent, the tributyl citrate of 50 mass parts and the erucic acid of 5 mass parts of 2.53 mass parts
Amide is as the raw material preparing the first component.
Take the superfine carbon black of the polylactic acid of 72 mass parts, the tributyl citrate of 6 mass parts and 22 mass parts as system
The raw material of standby 3rd component.
Embodiment four
From the difference of embodiment one, the present embodiment is that the consumption of three kinds of components is different.Use first group of 790 mass parts
Point, the 3rd component of the second component of 190 mass parts and 15 mass parts is as the raw material preparing agricultural mulching.
Embodiment five
From the difference of embodiment one, the present embodiment is that the consumption of three kinds of components is different.Use first group of 784 mass parts
Point, the 3rd component of the second component of 200 mass parts and 16 mass parts is as the raw material preparing agricultural mulching.
Embodiment six
From the difference of embodiment two, the present embodiment is that the consumption of three kinds of components is different.Use first group of 790 mass parts
Point, the 3rd component of the second component of 190 mass parts and 15 mass parts is as the raw material preparing agricultural mulching.
Embodiment seven
From the difference of embodiment two, the present embodiment is that the consumption of three kinds of components is different.Use first group of 784 mass parts
Point, the 3rd component of the second component of 200 mass parts and 16 mass parts is as the raw material preparing agricultural mulching.
Embodiment eight
From the difference of embodiment three, the present embodiment is that the consumption of three kinds of components is different.Use first group of 790 mass parts
Point, the 3rd component of the second component of 190 mass parts and 15 mass parts is as the raw material preparing agricultural mulching.
Embodiment nine
From the difference of embodiment three, the present embodiment is that the consumption of three kinds of components is different.Use first group of 784 mass parts
Point, the 3rd component of the second component of 200 mass parts and 16 mass parts is as the raw material preparing agricultural mulching.
Above-described embodiment prepares raw material and passes through mensuration, and its important technological parameters is as shown in the table:
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, any ripe
Know professional and technical personnel be combined possibly also with the technology contents of the disclosure above, change or retrofit be the present invention etc.
Effect embodiment.But every without departing from technical solution of the present invention content, the technical spirit of the foundation present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still falls within the protection domain of technical solution of the present invention.
Claims (9)
1. it is beneficial to a whole life cycle design PP Pipe Compound for soil moisture conservation, including the first component and second component, it is characterised in that: the
Two components are ethylene/vinyl alcohol copolymer, and the first component is made up of each raw material of following mass fraction:
Polylactic acid 200～450 parts
Poly terephthalic acid/tetramethylene adipate copolymer 500～800 parts
Antioxidant 2.5～5 parts
Ultraviolet (UV) resistant agent 2.5～5 parts
Plasticizer 50～80 parts
Erucyl amide 2～5 parts
First component is 750～790 mass parts by doses, and second component is 190～210 mass parts by doses.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 1, it is characterised in that: described first group
Divide and be made up of each raw material of following mass fraction:
Polylactic acid 310 parts
Poly terephthalic acid/tetramethylene adipate copolymer 600 parts
3 parts of antioxidant
Ultraviolet (UV) resistant agent 3 parts
Plasticizer 60 parts
Erucyl amide 4 parts
First component is 784 mass parts by doses, and second component is 200 mass parts by doses.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 1 and 2, it is characterised in that: also include
3rd component of 15～20 mass parts, the 3rd component is made up of each raw material of following mass fraction:
Polylactic acid 70～75 parts
Plasticizer 5～8 parts
Superfine carbon black 18～22 parts.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 3, it is characterised in that: described 3rd group
Divide and be made up of each raw material of following mass fraction:
Polylactic acid 75 parts
Plasticizer 5 parts
Superfine carbon black 20 parts
3rd component is 16 mass parts by doses.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 4, it is characterised in that: described plasticizer
For tributyl citrate.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 5, it is characterised in that: described antioxidant
It is 1010.
The whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 6, it is characterised in that: described uvioresistant
Line agent is UV770.
8. a preparation method for the arbitrary described whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation of claim 3 to 7, it is special
Levy and be: comprise the following steps:
(1) by each raw material high-speed stirred of the first component until mix homogeneously, then through dual-screw pelletizer melt blending post-tensioning
Bar, pelletizing, prepare the first component；
(2) each raw materials melt of the 3rd component is mediated, then through single screw pelletizer pelletize, prepare the 3rd component.
The preparation method of the whole life cycle design PP Pipe Compound being beneficial to soil moisture conservation the most according to claim 8, it is characterised in that:
In step (1), behind eight districts, during melt molding, arrive the head of dual-screw pelletizer, from A-P and the temperature of correspondence
Degree is followed successively by: the first 150 DEG C of district, 165 DEG C of the secondth district, 175 DEG C of the 3rd district, the 4th district to SECTOR-SEVEN 180 DEG C, Section Eight 170 DEG C
With head 170 DEG C；
In step (2), prilling temperature is 180 DEG C.
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| CN201610391841.9A CN105838048B (en) | 2016-06-06 | 2016-06-06 | A kind of whole life cycle design PP Pipe Compound for being beneficial to soil moisture conservation and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057177A (en) * | 2017-04-27 | 2017-08-18 | 江苏华昌织物有限公司 | A kind of degradable mulch Masterbatch and preparation method thereof |
| CN109251488A (en) * | 2018-09-20 | 2019-01-22 | 中国科学院长春应用化学研究所 | A kind of biodegradable conversion film and preparation method thereof |
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| US20080311813A1 (en) * | 2007-06-15 | 2008-12-18 | Ting Yuan-Ping R | Property films from renewable polymers |
| CN103612455A (en) * | 2013-11-22 | 2014-03-05 | 傅杰 | PLA (Polylactic Acid)-EVOH (Ethylene Vinyl Alcohol) composite material |
| CN103640290A (en) * | 2013-12-13 | 2014-03-19 | 山东汇盈新材料科技有限公司 | Completely biodegradable composite membrane with high barrier property |
| CN103950257A (en) * | 2014-05-08 | 2014-07-30 | 武汉华丽生物材料有限公司 | High-barrier bio-based composite membrane and preparation method thereof |
| CN104072953A (en) * | 2014-06-30 | 2014-10-01 | 浙江杭州鑫富药业股份有限公司 | Controlled degradation type full-biodegrade agricultural mulching film |
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2016
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Patent Citations (5)
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| US20080311813A1 (en) * | 2007-06-15 | 2008-12-18 | Ting Yuan-Ping R | Property films from renewable polymers |
| CN103612455A (en) * | 2013-11-22 | 2014-03-05 | 傅杰 | PLA (Polylactic Acid)-EVOH (Ethylene Vinyl Alcohol) composite material |
| CN103640290A (en) * | 2013-12-13 | 2014-03-19 | 山东汇盈新材料科技有限公司 | Completely biodegradable composite membrane with high barrier property |
| CN103950257A (en) * | 2014-05-08 | 2014-07-30 | 武汉华丽生物材料有限公司 | High-barrier bio-based composite membrane and preparation method thereof |
| CN104072953A (en) * | 2014-06-30 | 2014-10-01 | 浙江杭州鑫富药业股份有限公司 | Controlled degradation type full-biodegrade agricultural mulching film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057177A (en) * | 2017-04-27 | 2017-08-18 | 江苏华昌织物有限公司 | A kind of degradable mulch Masterbatch and preparation method thereof |
| CN109251488A (en) * | 2018-09-20 | 2019-01-22 | 中国科学院长春应用化学研究所 | A kind of biodegradable conversion film and preparation method thereof |
| CN109251488B (en) * | 2018-09-20 | 2021-02-05 | 中国科学院长春应用化学研究所 | Biodegradable light conversion film and preparation method thereof |
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| CN105838048B (en) | 2017-07-25 |
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