CN105001568A - Biodegradable mulch film and preparation method thereof - Google Patents
Biodegradable mulch film and preparation method thereof Download PDFInfo
- Publication number
- CN105001568A CN105001568A CN201510376448.8A CN201510376448A CN105001568A CN 105001568 A CN105001568 A CN 105001568A CN 201510376448 A CN201510376448 A CN 201510376448A CN 105001568 A CN105001568 A CN 105001568A
- Authority
- CN
- China
- Prior art keywords
- add
- potato starch
- molding machine
- parts
- blow molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention provides a biodegradable mulch film, which comprises the following components by weight: 12-15 parts of gelatinized potato starch, 15-20 parts of polyvinyl alcohol, 8-10 parts of low-density polyethylene, 1-2 parts of glycerin, 0.8-1.2 parts of glyoxal, 0.3-0.5 part of nano silica, 3-5 parts of urea and 0.5-0.8 part of a photolysis agent. The present invention also provides a preparation method. The method conducts modification on potato starch, so that difficultly compatible components with different polarities can well integrate into one; and the method not only can increase the starch content of the feedstock, and more importantly can improve the mechanical properties and usage performance of the plastic film product.
Description
Technical field
The present invention relates to a kind of degradable mulch and preparation method thereof.
Background technology
Agricultural mulching is used for agriculture production and starts from the phase at the beginning of the eighties in last century, and in after this 30 years, plastic sheeting for farm use is widely used in the every field of agriculture production.It, to improve the soil moisture, soil moisture conservation, the evaporation of control moisture, suppress weed growth and improve many characteristics of crop yield, plays an important role in agricultural production process.Along with a large amount of uses of agricultural mulching, the disposal problems of useless film also becomes increasingly outstanding, and while completing " White Revolution ", " white pollution " becomes again one of the principal element affecting agricultural development, contaminate environment, restriction crop yield.According to investigations, in cotton, corn field, residual 4kg/ mu mulch film, will cause the underproduction of 10%; Wheatland remains 4kg/ mu mulch film, will underproduction 30kg/ mu, not only reduces income, and causes soil compaction, more seriously the physicochemical structure of spoiled soil, contaminated land and environment.The ways such as peasant household also takes to reclaim to useless film, bury, burning process, but the useless film of burying can not decompose for 100 years, burns and produces again obnoxious flavour, causes secondary pollution.In order to reduce the pollution of residual film to soil as far as possible, reduce the impact of residual film on crop, need degradative plastic film be greatly developed.
Summary of the invention
The invention provides a kind of degradable mulch and preparation method thereof.
The invention provides a kind of degradable mulch, comprise following component by weight: gelatinization potato starch 12-15 part, polyvinyl alcohol 15-20 part, Low Density Polyethylene 8-10 part, glycerine 1-2 part, oxalic dialdehyde 0.8-1.2 part, nanometer grade silica 0.3-0.5 part, urea 3-5 part, photolysis agent 0.5-0.8 part.
The present invention also provides the preparation method of above-mentioned degradative plastic film, and step is as follows:
(1) in potato starch, add distilled water, be heated to 90 DEG C, stir 30min, make its complete gelatinization;
(2) in polyvinyl alcohol, add appropriate distilled water, heating makes it dissolve;
(3) by blended to the potato starch of gelatinization, polyvinyl alcohol and Low Density Polyethylene, add glycerine plasticising, after stirring 30min, add oxalic dialdehyde afterwards and carry out being cross-linked, adjustment pH=3, crosslinked 40min; Then add nanometer grade silica and stir 10min, then add urea, photolysis agent stirring 20min, mixture is sent into extrusion blow molding machine;
Extrusion blow molding machine No. 1 screw rod working temperature: blanking section 140-150 DEG C, melt zone 160-170 DEG C, fluxing zone 160-175 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 2 screw rod working temperatures: blanking section 135-145 DEG C, melt zone 150-160 DEG C, fluxing zone 155-160 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 3 screw rod working temperatures: blanking section 145-155 DEG C, melt zone 160-170 DEG C, fluxing zone 166-180 DEG C, die head section 160-175 DEG C.Blowing-up technology parameter blow-up ratio 4-6; Draw ratio 2.5-3, obtains mulch film of the present invention.
The present invention is by carrying out modification to potato starch, make polarity difference be difficult to compatible component can combine together well, (starch content can reach 25% so not only can to improve the content of starch in raw material, biodegradable component can reach 50%), prior mechanical property and the use properties improving ground membrane product.Starch content is high, and degradation property is also all right.
Embodiment
Following embodiment is convenient to understand the present invention better, but does not limit the present invention.Experimental technique in following embodiment, if no special instructions, is ordinary method.Test materials used in following embodiment, if no special instructions, is and purchases available from routine biochemistry reagent shop.
embodiment 1
The formula of degradable mulch of the present invention is as follows:
Gelatinization potato starch 13kg, polyvinyl alcohol 18kg, Low Density Polyethylene 9kg, glycerine 1.5 parts, oxalic dialdehyde 1kg, nanometer grade silica 0.4kg, urea 4kg, photolysis agent 0.6kg.
The preparation method of above-mentioned degradable mulch is as follows:
(1) in potato starch, add distilled water, be heated to 90 DEG C, stir 30min, make its complete gelatinization;
(2) in polyvinyl alcohol, add appropriate distilled water, heating makes it dissolve;
(3) by blended to the potato starch of gelatinization, polyvinyl alcohol and Low Density Polyethylene, add glycerine plasticising, after stirring 30min, add oxalic dialdehyde afterwards and carry out being cross-linked, adjustment pH=3, crosslinked 40min; Then add nanometer grade silica and stir 10min, then add urea, photolysis agent stirring 20min, mixture is sent into extrusion blow molding machine.
Extrusion blow molding machine No. 1 screw rod working temperature: blanking section 140-150 DEG C, melt zone 160-170 DEG C, fluxing zone 160-175 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 2 screw rod working temperatures: blanking section 135-145 DEG C, melt zone 150-160 DEG C, fluxing zone 155-160 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 3 screw rod working temperatures: blanking section 145-155 DEG C, melt zone 160-170 DEG C, fluxing zone 166-180 DEG C, die head section 160-175 DEG C.Blowing-up technology parameter blow-up ratio 4-6; Draw ratio 2.5-3, obtain mulch film of the present invention, performance is as shown in table 1.
Through test, degradative plastic film of the present invention has the physicals of common ground film, can heat volume increase to farm crop, within 60 to 90 days, starts to decompose, and exposure face can be degraded into and be less than 4*4cm
2fragment, after burying native part 60-80 days, molecular weight declines to a great extent, can fast degradation after routing up soil table.To applicable crops and soil safety, the physicochemical character of soil can not be changed; Static resistance is good, and be applicable to electronic product packaging, membrane product is the thinnest reaches 0.003mm.
The present invention is by carrying out modification to potato starch, make polarity difference be difficult to compatible component can combine together well, (starch content can reach 30% so not only can to improve the content of starch in raw material, biodegradable component can reach 55%), prior mechanical property and the use properties improving ground membrane product.Starch content is high, and degradation property is also all right.
embodiment 2
The formula of degradable mulch of the present invention is as follows:
Gelatinization potato starch 12kg, polyvinyl alcohol 20kg, Low Density Polyethylene 8kg, glycerine 1 part, oxalic dialdehyde 1.2kg, nanometer grade silica 0.3kg, urea 5kg, photolysis agent 0.8kg.
The preparation method of the present embodiment is identical with embodiment 1.
embodiment 3
The formula of degradable mulch of the present invention is as follows:
Gelatinization potato starch 15kg, polyvinyl alcohol 15kg, Low Density Polyethylene 10kg, glycerine 2 parts, oxalic dialdehyde 0.8kg, nanometer grade silica 0.5kg, urea 3kg, photolysis agent 0.5kg.
The preparation method of the present embodiment is identical with embodiment 1.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a degradable mulch, is characterized in that: comprise following component by weight: gelatinization potato starch 12-15 part, polyvinyl alcohol 15-20 part, Low Density Polyethylene 8-10 part, glycerine 1-2 part, oxalic dialdehyde 0.8-1.2 part, nanometer grade silica 0.3-0.5 part, urea 3-5 part, photolysis agent 0.5-0.8 part.
2. the preparation method of degradative plastic film according to claim 1, is characterized in that: step is as follows:
(1) in potato starch, add distilled water, be heated to 90 DEG C, stir 30min, make its complete gelatinization;
(2) in polyvinyl alcohol, add appropriate distilled water, heating makes it dissolve;
(3) by blended to the potato starch of gelatinization, polyvinyl alcohol and Low Density Polyethylene, add glycerine plasticising, after stirring 30min, add oxalic dialdehyde afterwards and carry out being cross-linked, adjustment pH=3, crosslinked 40min; Then add nanometer grade silica and stir 10min, then add urea, photolysis agent stirring 20min, mixture is sent into extrusion blow molding machine;
Extrusion blow molding machine No. 1 screw rod working temperature: blanking section 140-150 DEG C, melt zone 160-170 DEG C, fluxing zone 160-175 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 2 screw rod working temperatures: blanking section 135-145 DEG C, melt zone 150-160 DEG C, fluxing zone 155-160 DEG C, die head section 160-175 DEG C; Extrusion blow molding machine No. 3 screw rod working temperatures: blanking section 145-155 DEG C, melt zone 160-170 DEG C, fluxing zone 166-180 DEG C, die head section 160-175 DEG C;
Blowing-up technology parameter blow-up ratio 4-6; Draw ratio 2.5-3, obtains mulch film of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376448.8A CN105001568B (en) | 2015-07-01 | 2015-07-01 | A kind of degradable mulch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376448.8A CN105001568B (en) | 2015-07-01 | 2015-07-01 | A kind of degradable mulch and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105001568A true CN105001568A (en) | 2015-10-28 |
| CN105001568B CN105001568B (en) | 2017-12-12 |
Family
ID=54374451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510376448.8A Expired - Fee Related CN105001568B (en) | 2015-07-01 | 2015-07-01 | A kind of degradable mulch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105001568B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885114A (en) * | 2016-06-24 | 2016-08-24 | 安徽德琳环保发展（集团）有限公司 | Silica-enhanced caprolactone-starch degradable thin film and preparation method thereof |
| CN106084378A (en) * | 2016-06-16 | 2016-11-09 | 兰州鑫银环橡塑制品有限公司 | A kind of degradable mulch |
| CN106366358A (en) * | 2016-08-31 | 2017-02-01 | 迁安市隆赓塑料制品有限公司 | Multifunctional polyethylene photo-biodegradable mulching film |
| CN107815008A (en) * | 2017-11-24 | 2018-03-20 | 马鞍山松鹤信息科技有限公司 | A kind of agricultural planting degradable mulch and preparation method thereof |
| CN109796711A (en) * | 2018-12-21 | 2019-05-24 | 宁波华丰包装有限公司 | A kind of heat shrink films and preparation method thereof of high degradability energy and high barrier function |
| CN111303572A (en) * | 2020-05-10 | 2020-06-19 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | Polyvinyl alcohol-based biodegradable agricultural environment-friendly mulching film |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099399A (en) * | 1993-08-24 | 1995-03-01 | 北京华新淀粉降解树脂制品有限公司 | Biodegradable composition containing starch and its producing method and its use |
| CN1104656A (en) * | 1993-12-31 | 1995-07-05 | 中国科学院兰州化学物理研究所 | Biodegradable films and their production |
| 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 |
| CN102329435A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Composite fully degradable agricultural mulching film material and preparation process thereof |
| CN102424174A (en) * | 2011-07-27 | 2012-04-25 | 河南省南街村（集团）有限公司 | Degradable plastic bag product |
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| CN103242561A (en) * | 2013-05-27 | 2013-08-14 | 新疆师范大学 | Method for preparing degradable mulching film by taking potato starch as raw material |
| CN103865106A (en) * | 2014-03-31 | 2014-06-18 | 宋旭 | Biodegradable plastic with high starch content and preparation method of biodegradable plastic |
| CN103980586A (en) * | 2014-03-27 | 2014-08-13 | 深圳市品创源实业有限公司 | Biodegradable plastic film composition and biodegradable plastic film preparation method |
-
2015
- 2015-07-01 CN CN201510376448.8A patent/CN105001568B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099399A (en) * | 1993-08-24 | 1995-03-01 | 北京华新淀粉降解树脂制品有限公司 | Biodegradable composition containing starch and its producing method and its use |
| CN1104656A (en) * | 1993-12-31 | 1995-07-05 | 中国科学院兰州化学物理研究所 | Biodegradable films and their production |
| 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 |
| CN102329435A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Composite fully degradable agricultural mulching film material and preparation process thereof |
| CN102424174A (en) * | 2011-07-27 | 2012-04-25 | 河南省南街村（集团）有限公司 | Degradable plastic bag product |
| CN102850626A (en) * | 2012-08-30 | 2013-01-02 | 苏州市德莱尔建材科技有限公司 | Degradable mulch film and preparation method thereof |
| CN103242561A (en) * | 2013-05-27 | 2013-08-14 | 新疆师范大学 | Method for preparing degradable mulching film by taking potato starch as raw material |
| CN103980586A (en) * | 2014-03-27 | 2014-08-13 | 深圳市品创源实业有限公司 | Biodegradable plastic film composition and biodegradable plastic film preparation method |
| CN103865106A (en) * | 2014-03-31 | 2014-06-18 | 宋旭 | Biodegradable plastic with high starch content and preparation method of biodegradable plastic |
Non-Patent Citations (2)
| Title |
|---|
| 张启忠 等: "淀粉-聚乙烯醇生物降解薄膜的制备研究", 《科技视界》 * |
| 晏欣 等: "聚乙烯/淀粉光-生物双降解薄膜的制备及力学性能", 《海军工程大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084378A (en) * | 2016-06-16 | 2016-11-09 | 兰州鑫银环橡塑制品有限公司 | A kind of degradable mulch |
| CN105885114A (en) * | 2016-06-24 | 2016-08-24 | 安徽德琳环保发展（集团）有限公司 | Silica-enhanced caprolactone-starch degradable thin film and preparation method thereof |
| CN106366358A (en) * | 2016-08-31 | 2017-02-01 | 迁安市隆赓塑料制品有限公司 | Multifunctional polyethylene photo-biodegradable mulching film |
| CN107815008A (en) * | 2017-11-24 | 2018-03-20 | 马鞍山松鹤信息科技有限公司 | A kind of agricultural planting degradable mulch and preparation method thereof |
| CN109796711A (en) * | 2018-12-21 | 2019-05-24 | 宁波华丰包装有限公司 | A kind of heat shrink films and preparation method thereof of high degradability energy and high barrier function |
| CN111303572A (en) * | 2020-05-10 | 2020-06-19 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | Polyvinyl alcohol-based biodegradable agricultural environment-friendly mulching film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105001568B (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105001568B (en) | A kind of degradable mulch and preparation method thereof | |
| CN104356428B (en) | A kind of starch nano composite membrane and preparation method thereof | |
| JP3076797B2 (en) | Modified starch composition for producing biodegradable plastic articles and method for producing the same | |
| CN108003448A (en) | A kind of degradation plastic packaging bag and preparation method thereof | |
| KR20070010837A (en) | Biodegradable composition | |
| US8585817B2 (en) | Biodegradable thermoplastic resin composition comprising cellulose derivatives and surface-treated natural fiber | |
| CN109694556A (en) | A kind of biodegradable master batch for agricultural film of weeding and preparation method thereof | |
| CN103289134A (en) | Fully biodegradable and multi-functional plastic mulch | |
| CN105924764A (en) | Method for manufacturing degradable plastic packaging bags | |
| CN104974398A (en) | Mulching film degraded via light-microorganism synergetic degradation, and preparation method thereof | |
| CN105295111A (en) | Total biomass composite injection moulding material and preparation method thereof | |
| CN112063125A (en) | Special material for preparing full-biodegradable mulching film, full-biodegradable mulching film prepared from special material and preparation method of mulching film | |
| CN103819748A (en) | Preparing method for starch-based degradable packaging film bag | |
| CN106366408A (en) | Degradable insect prevention and removal agricultural thin film | |
| CN105670072A (en) | Production method of degradable plastic woven bag | |
| EP0473726A1 (en) | Injection molded biodegradable starch polymer composite | |
| CN105860558A (en) | Preparation method of high-strength environment-friendly plastic bag for packaging | |
| CN110016161A (en) | A kind of Wholly-degradable material and preparation method for shopping bag, mulch and awning film | |
| CN104371288B (en) | A kind of composite starch biodegradable material and its preparation method | |
| JP2016503120A (en) | Biodegradable synthetic polymer material | |
| CN107698857A (en) | A kind of agricultural film material and its preparation technology | |
| CN103122080A (en) | Preparation method of synthetic fiber-reinforced fully-degradable starch plastic | |
| CN107286612A (en) | A kind of plastic packaging bag | |
| US20200199332A1 (en) | Cellulose based composition | |
| CN109593264B (en) | Durable photodegradable mulching film with low light transmittance and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20210701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |