CN104974398B - Mulching film degraded via light-microorganism synergetic degradation, and preparation method thereof - Google Patents
Mulching film degraded via light-microorganism synergetic degradation, and preparation method thereof Download PDFInfo
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- CN104974398B CN104974398B CN201510376426.1A CN201510376426A CN104974398B CN 104974398 B CN104974398 B CN 104974398B CN 201510376426 A CN201510376426 A CN 201510376426A CN 104974398 B CN104974398 B CN 104974398B
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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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- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
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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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- 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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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention provides a mulching film degraded via light-microorganism synergetic degradation. The mulching film degraded via light-microorganism synergetic degradation comprises following ingredients, by weight, 12 to 15 parts of gelatinized potato starch, 20 to 30 parts of low density polyethylene, 0.5 to 0.8 part of collagen, 0.5 to 0.8 part of fat, 0.5 to 0.8 part of lactic acid, 1 to 2 parts of glycerin, 1 to 2 parts of glyoxal, 0.5 part of nano-grade silicon dioxide, 4 to 6 parts of urea, and 0.5 to 0.8 part of a photolysis agent. The invention also provides a preparation method. According to the preparation method, potato starch is modified, so that preferable mixing of ingredients which are incompatible because of different polarity is realized, raw material starch content is increased, and more important, mulching film product mechanical properties and using performance are improved.
Description
Technical field
The present invention relates to a kind of light and microorganism Synergistic degradation mulch film and preparation method thereof.
Background technology
Agricultural mulching starts from the phase at the beginning of the eighties in last century for agricultural production, and in 30 years hereafter, agricultural film extensively should
For the every field of agricultural production.It is improving the soil moisture, soil moisture conservation, control moisture evaporation, suppress weed growth and raising
Many characteristics of crop yield, play an important role in agricultural production process.With using in a large number for agricultural mulching, give up
The disposal problems of film also become to project increasingly, and while " White Revolution " is completed, " white pollution " becomes impact agricultural again
One of development, pollution environment, the principal element of restriction crop yield.According to investigations, 4kg/ mu of ground is remained in Cotton Gossypii, milpa
Film, will result in 10% underproduction；Wheatland remains 4kg/ mus mulch film it is necessary to underproduction 30kg/ mus, not only reduces income, Er Qiezao
Into soil compaction, the physicochemical structure of soil, contaminated land and environment are more seriously destroyed.Peasant household useless film is also taken recovery,
The method such as bury, burn processing, but the useless film buried can not decompose for 100 years, burn and produce again harmful gass, cause secondary
Pollution.In order to reduce pollution of the residual film to soil as far as possible, impact of the residual film to crop is reduced, degradative plastic film need to be greatly developed.
The content of the invention
The invention provides a kind of light and microorganism Synergistic degradation mulch film and preparation method thereof.
The present invention provides a kind of light and microorganism Synergistic degradation mulch film, including following component by weight：Gelatinizing Rhizoma Solani tuber osi
Starch 8-12 parts, Low Density Polyethylene 20-30 parts, collagen protein 0.5-0.8 parts, fat 0.5-0.8 parts, lactic acid 0.5-0.8 parts,
Glycerol 1-2 parts, Biformyl 1-2 parts, 0.5 part of nanometer grade silica, carbamide 4-6 parts, photolysis agent 0.5-0.8 parts.
The present invention also provides the preparation method of above-mentioned degradative plastic film, and step is as follows：
（1）Prepare gelatinizing potato starch：Distilled water is added in potato starch, 90 DEG C are heated to, 30min is stirred so as to
Gelatinizing completely, obtains gelatinizing potato starch；
（2）Prepare SEP environmental protection raw materials：By Low Density Polyethylene, collagen protein, fat, lactic acid mixing, appropriate distillation is added
Water, heating dissolves it, obtains SEP environmental protection raw materials；
（3）By gelatinizing potato starch and SEP environmental protection raw material blendings, glycerol plasticising is added, after stirring 35min, added afterwards
Biformyl is crosslinked, and adjusts pH=3, is crosslinked 45min；Nanometer grade silica, carbamide, photolysis agent are subsequently adding, are stirred
25min, sends mixture into extrusion blow molding machine；
No. 1 screw rod operating temperature of extrusion blow molding machine：Blanking section 140-150 DEG C, 160-170 DEG C of melt zone, fluxing zone 160-
175 DEG C, die head section 164-172 DEG C；No. 2 screw rod operating temperatures of extrusion blow molding machine：Blanking section 138-148 DEG C, melt zone 150-160
DEG C, 155-160 DEG C of fluxing zone, die head section 160-175 DEG C；No. 3 screw rod operating temperatures of extrusion blow molding machine：Blanking section 145-155 DEG C,
160-170 DEG C of melt zone, 164-172 DEG C of fluxing zone, die head section 160-175 DEG C.Blowing-up technology parameter blow-up ratio 4-6；Draw ratio
2.5-3, obtains the degradative plastic film of the present invention.
The present invention is by being modified process to potato starch so that polarity difference is difficult to compatible component can be well
Combine together, so can not only improve the content of starch in raw material（, up to 30%, biodegradable component can for content of starch
Up to 55%）, the prior mechanical property and performance for improving ground membrane product.Content of starch is high, and degradation property is also all right.
Specific embodiment
Below example facilitates a better understanding of the present invention, but does not limit the present invention.Experiment in following embodiments
Method, if no special instructions, is conventional method.Test material used in following embodiments, if no special instructions, is certainly
What routine biochemistry reagent shop was commercially available.
Embodiment 1
The light of the present invention is as follows with the formula of microorganism Synergistic degradation mulch film：
Gelatinizing potato starch 10kg, Low Density Polyethylene 25kg, collagen protein 0.6kg, fat 0.6kg, lactic acid 0.6kg,
Glycerol 1.5kg, Biformyl 1.5kg, nanometer grade silica 0.5kg, carbamide 5kg, photolysis agent 0.6kg.
Wherein, fat comes from lard, and photolysis agent can select commercially available any one.
Above-mentioned light is as follows with the preparation method of microorganism Synergistic degradation mulch film：
（1）Prepare gelatinizing potato starch：Distilled water is added in potato starch, 90 DEG C are heated to, 30min is stirred so as to
Gelatinizing completely, obtains gelatinizing potato starch；
（2）Prepare SEP environmental protection raw materials：By Low Density Polyethylene, collagen protein, fat, lactic acid mixing, appropriate distillation is added
Water, heating dissolves it, obtains SEP environmental protection raw materials；
（3）By gelatinizing potato starch and SEP environmental protection raw material blendings, glycerol plasticising is added, after stirring 35min, added afterwards
Biformyl is crosslinked, and adjusts pH=3, is crosslinked 45min；Nanometer grade silica, carbamide, photolysis agent are subsequently adding, are stirred
25min, sends mixture into extrusion blow molding machine；
No. 1 screw rod operating temperature of extrusion blow molding machine：Blanking section 140-150 DEG C, 160-170 DEG C of melt zone, fluxing zone 160-
175 DEG C, die head section 164-172 DEG C；No. 2 screw rod operating temperatures of extrusion blow molding machine：Blanking section 138-148 DEG C, melt zone 150-160
DEG C, 155-160 DEG C of fluxing zone, die head section 160-175 DEG C；No. 3 screw rod operating temperatures of extrusion blow molding machine：Blanking section 145-155 DEG C,
160-170 DEG C of melt zone, 164-172 DEG C of fluxing zone, die head section 160-175 DEG C.Blowing-up technology parameter blow-up ratio 4-6；Draw ratio
2.5-3, obtains the degradative plastic film of the present invention, and performance is as shown in table 1.
The performance of the degradative plastic film of the present invention of table 1
Jing is tested, and the degradative plastic film of the present invention has the physical property of common ground film, and crops can be heated with volume increase, and 65
Started to decompose to 90 days, exposure face can be degraded into less than 4*4cm2Fragment, bury native part after 60-80 days molecular weight significantly under
Drop, routing up can fast degradation after native table.To applicable crops and soil safety, the physicochemical character of soil will not be changed；Antistatic behaviour
It is good, it is adapted to electronic product packaging, membrane product is most thin up to 0.003mm.
The present invention is by being modified process to potato starch so that polarity difference is difficult to compatible component can be well
Combine together, so can not only improve the content of starch in raw material（, up to 30%, biodegradable component can for content of starch
Up to 55%）, the prior mechanical property and performance for improving ground membrane product.Content of starch is high, and degradation property is also all right.
Embodiment 2
The light of the present invention is as follows with the formula of microorganism Synergistic degradation mulch film：
Gelatinizing potato starch 12kg, Low Density Polyethylene 30kg, collagen protein 0.8kg, fat 0.5kg, lactic acid 0.8kg,
Glycerol 1kg, Biformyl 1kg, nanometer grade silica 0.5kg, carbamide 6kg, photolysis agent 0.8kg.
The preparation method of the present embodiment is same as Example 1.
Embodiment 3
The light of the present invention is as follows with the formula of microorganism Synergistic degradation mulch film：
It is gelatinizing potato starch 8kg, Low Density Polyethylene 20kg, collagen protein 0.5kg, fat 0.8kg, lactic acid 0.5kg, sweet
2 kg of oil, the kg of Biformyl 2, nanometer grade silica 0.5kg, carbamide 4kg, photolysis agent 0.5kg.
The preparation method of the present embodiment is same as Example 1.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of light and microorganism Synergistic degradation mulch film, it is characterised in that：Including following component by weight：Gelatinizing Rhizoma Solani tuber osi forms sediment
It is powder 8-12 parts, Low Density Polyethylene 20-30 parts, collagen protein 0.5-0.8 parts, fat 0.5-0.8 parts, lactic acid 0.5-0.8 parts, sweet
Oily 1-2 parts, Biformyl 1-2 parts, 0.5 part of nanometer grade silica, carbamide 4-6 parts, photolysis agent 0.5-0.8 parts；The drop
The preparation method step of solution mulch film is as follows：
（1）Prepare gelatinizing potato starch：Distilled water is added in potato starch, 90 DEG C are heated to, 30min is stirred so as to completely
Gelatinizing, obtains gelatinizing potato starch；
（2）Prepare SEP environmental protection raw materials：By Low Density Polyethylene, collagen protein, fat, lactic acid mixing, appropriate distilled water is added,
Heating dissolves it, obtains SEP environmental protection raw materials；
（3）By gelatinizing potato starch and SEP environmental protection raw material blendings, glycerol plasticising is added, after stirring 35min, second two is added afterwards
Aldehyde is crosslinked, and adjusts pH=3, is crosslinked 45min；Nanometer grade silica, carbamide, photolysis agent are subsequently adding, 25min is stirred,
Mixture is sent into into extrusion blow molding machine；
No. 1 screw rod operating temperature of extrusion blow molding machine：Blanking section 140-150 DEG C, 160-170 DEG C of melt zone, fluxing zone 160-175
DEG C, die head section 164-172 DEG C；No. 2 screw rod operating temperatures of extrusion blow molding machine：Blanking section 138-148 DEG C, 150-160 DEG C of melt zone,
155-160 DEG C of fluxing zone, die head section 160-175 DEG C；No. 3 screw rod operating temperatures of extrusion blow molding machine：It is blanking section 145-155 DEG C, molten
Melt section 160-170 DEG C, 164-172 DEG C of fluxing zone, die head section 160-175 DEG C；Blowing-up technology parameter blow-up ratio 4-6；Draw ratio
2.5-3, obtains the degradative plastic film of the present invention.
2. the preparation method of the degradative plastic film described in claim 1, it is characterised in that：Step is as follows：
（1）Prepare gelatinizing potato starch：Distilled water is added in potato starch, 90 DEG C are heated to, 30min is stirred so as to completely
Gelatinizing, obtains gelatinizing potato starch；
（2）Prepare SEP environmental protection raw materials：By Low Density Polyethylene, collagen protein, fat, lactic acid mixing, appropriate distilled water is added,
Heating dissolves it, obtains SEP environmental protection raw materials；
（3）By gelatinizing potato starch and SEP environmental protection raw material blendings, glycerol plasticising is added, after stirring 35min, second two is added afterwards
Aldehyde is crosslinked, and adjusts pH=3, is crosslinked 45min；Nanometer grade silica, carbamide, photolysis agent are subsequently adding, 25min is stirred,
Mixture is sent into into extrusion blow molding machine；
No. 1 screw rod operating temperature of extrusion blow molding machine：Blanking section 140-150 DEG C, 160-170 DEG C of melt zone, fluxing zone 160-175
DEG C, die head section 164-172 DEG C；No. 2 screw rod operating temperatures of extrusion blow molding machine：Blanking section 138-148 DEG C, 150-160 DEG C of melt zone,
155-160 DEG C of fluxing zone, die head section 160-175 DEG C；No. 3 screw rod operating temperatures of extrusion blow molding machine：It is blanking section 145-155 DEG C, molten
Melt section 160-170 DEG C, 164-172 DEG C of fluxing zone, die head section 160-175 DEG C；Blowing-up technology parameter blow-up ratio 4-6；Draw ratio
2.5-3, obtains the degradative plastic film of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510376426.1A CN104974398B (en) | 2015-07-01 | 2015-07-01 | Mulching film degraded via light-microorganism synergetic degradation, and preparation method thereof |
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| CN201510376426.1A CN104974398B (en) | 2015-07-01 | 2015-07-01 | Mulching film degraded via light-microorganism synergetic degradation, and preparation method thereof |
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| CN104974398B true CN104974398B (en) | 2017-04-12 |
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| CN105441041B (en) * | 2015-11-29 | 2018-05-25 | 辽宁石油化工大学 | A kind of drilling fluid cationic sealing agent and preparation method thereof |
| CN105949737B (en) * | 2016-05-31 | 2018-07-31 | 沧州沧硕塑业有限公司 | A kind of degradable mulch and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143936A (en) * | 2007-09-05 | 2008-03-19 | 哈尔滨工业大学 | Preparation method for completely biodegraded high amylose starches base thin film |
| CN102268155A (en) * | 2011-07-04 | 2011-12-07 | 王庆昭 | Additive and preparation method thereof as well as full-degradable polyethylene nano compound material and products thereof |
| CN102796285A (en) * | 2011-05-27 | 2012-11-28 | 上海杰事杰新材料(集团)股份有限公司 | Double-degradation starch masterbatch and preparation method thereof |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
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2015
- 2015-07-01 CN CN201510376426.1A patent/CN104974398B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143936A (en) * | 2007-09-05 | 2008-03-19 | 哈尔滨工业大学 | Preparation method for completely biodegraded high amylose starches base thin film |
| CN102796285A (en) * | 2011-05-27 | 2012-11-28 | 上海杰事杰新材料(集团)股份有限公司 | Double-degradation starch masterbatch and preparation method thereof |
| CN102268155A (en) * | 2011-07-04 | 2011-12-07 | 王庆昭 | Additive and preparation method thereof as well as full-degradable polyethylene nano compound material and products thereof |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
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