CN101544804A - Degradable liquid agricultural mulching film - Google Patents
Degradable liquid agricultural mulching film Download PDFInfo
- Publication number
- CN101544804A CN101544804A CN200910014957A CN200910014957A CN101544804A CN 101544804 A CN101544804 A CN 101544804A CN 200910014957 A CN200910014957 A CN 200910014957A CN 200910014957 A CN200910014957 A CN 200910014957A CN 101544804 A CN101544804 A CN 101544804A
- Authority
- CN
- China
- Prior art keywords
- coal
- brown coal
- mulching film
- weathered coal
- agricultural mulching
- 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.)
- Pending
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 239000003077 lignite Substances 0.000 claims abstract description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000003245 coal Substances 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 9
- 150000002433 hydrophilic molecules Chemical class 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 14
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004021 humic acid Substances 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 239000011573 trace mineral Substances 0.000 claims description 3
- 235000013619 trace mineral Nutrition 0.000 claims description 3
- 239000006196 drop Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000002362 mulch Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- MEIRRNXMZYDVDW-MQQKCMAXSA-N (2E,4E)-2,4-hexadien-1-ol Chemical compound C\C=C\C=C\CO MEIRRNXMZYDVDW-MQQKCMAXSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000003413 degradative effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Protection Of Plants (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A degradable liquid agricultural mulching film is prepared from weathered coal or lignite, sodium hydroxide and polyacrylamide through modifying the weathered coal or lignite by adding sodium hydroxide, adding polyacrylamide and hydrophilic compound, stirring and fusing. The liquid agricultural mulching film has the advantages of simple and reasonable raw material composition, low price, simple production and preparation method and process, and the produced liquid agricultural mulching film has low cost and price, is easily accepted by farmers and is convenient for large-area popularization and application.
Description
Technical field:
The invention belongs to the agricultural mulching technical scope, relate to a kind of degradable liquid agricultural mulching film.
Background technology:
Plastic film mulching cultivation can be incubated soil moisture conservation, is the effective means of the precocious volume increase of farm crop.The wide popularization and application of film-mulching cultivation technique is for developing rapidly of agricultural brought into play enormous function.But present widely used polyethylene solid mulch film is difficult to degraded, has caused huge white pollution.For overcoming this problem, at present both at home and abroad all at degradable ground of research and development membrane technique, for example Japan's development is the Biodegradable mulch of masterbatch with the regenerated cellulose, Germany development be that the photodegradation film of masterbatch and China add two degradative plastic films that treated starch makes or the like in the prior art with the heat-sensitive resin in regenerated cellulose and heat-sensitive resin, overcome the above-mentioned drawback that existing polyethylene ground film is difficult to degrade effectively.But the production cost of above-mentioned degradable mulch is high especially, and inconvenience is accepted by vast farmers, is difficult to wide popularization and application.In addition, less in view of the area of effective coverage ratio of solid mulch film, the problem that often causes mulch film to waste, the direction that therefore use conveniently, degradable liquid mulch film nuisanceless, that the area of effective coverage ratio is high just becomes the continuous research and development of people.Application number is the patent application of 01130944.X, discloses a kind of multifunctional hydrolyzed mulching liquid and blending process thereof.The hydrolyzed mulching liquid of this patent application technology is made up of polyvinyl alcohol, polyacrylic acid, hydroxypropylated starch, sorbyl alcohol, Magnesium Stearate and urea raw material, employing joins polyvinyl alcohol, polyacrylic acid, hydroxypropylated starch and sorbyl alcohol in the extrusion machine, passes through room temperature and is heated to 130 ℃, 130 ℃, 110 ℃, 110 ℃ and 150 ℃/30-40
Bzr6 temperature sections; Raw material after the extruding is added Magnesium Stearate, urea and ethylene glycol more further be crushed to the fusion flocculation agent; Add quantitative water then in dissolving tank, turn on agitator slowly is sprinkled into flocculation agent and makes.This hydrolyzed mulching raw material type is more, and cost is also than higher; The method of its preparation, program are comparatively loaded down with trivial details, and production efficiency is lower.
Summary of the invention:
The purpose of this invention is to provide a kind of new degradable liquid mulch film, in order to overcome the above-mentioned drawback of existing in prior technology effectively.The objective of the invention is to realize with following technical scheme: liquid agricultural mulching film of the present invention is a raw material with weathered coal or brown coal, sodium hydroxide and polyacrylamide, adopts following processing step to make:
(1) weathered coal or brown coal sample thief are carried out analytical test, calculate its content of humic acid;
(2) get weathered coal or brown coal and drop into retort, just drop into the sodium hydroxide of weathered coal and/or brown coal weight 5-20% simultaneously according to content of humic acid in weathered coal or the brown coal, stir, feed steam heating, and temperature is controlled at 60-100 degree centigrade, reacted 30-180 minute, ageing 12-36 hour then, with weathered coal or brown coal modification;
(3) in the weathered coal of modification or brown coal, add the polyacrylamide of modification weathered coal or brown coal amount 1-1.5%, add an amount of hydrophilic compounds simultaneously, stir, make it to combine together, promptly make degradable liquid agricultural mulching film of the present invention.
Liquid agricultural mulching film of the present invention can also add weedicide and/or sterilant and/or in, trace element is an amount of, make its effect and effect with weeding and/or desinsection and/or additional soil trace element, said adding can be sneaked in above-mentioned said processing step (three).
Liquid agricultural mulching film raw material of the present invention is formed advantages of simple, and price is low, and preparation method technology is simple, and liquid agricultural mulching film cost, the price of being produced are low, are easily accepted by vast farmers, are convenient to large scale application.
Embodiment:
Embodiment 1: get 1 ton of weathered coal, and therefrom analytical test is carried out in sampling, calculating its content of humic acid is 50%; Weathered coal is dropped into retort, drop into 150 kilograms of sodium hydroxide simultaneously, stir, feed steam heating, and temperature is controlled at 80 degrees centigrade, reacted 120 minutes, ageing is 24 hours then, with the weathered coal modification; Add 12 kilograms of polyacrylamides in the weathered coal of modification, it is an amount of to add hydrophilic compounds simultaneously, stirs, and makes it to combine together, promptly makes degradable liquid agricultural mulching film of the present invention.
Embodiment 2: get 1 ton in brown coal, and therefrom analytical test is carried out in sampling, calculating its content of humic acid is 45%; Brown coal are dropped into retort, drop into 50 kilograms of sodium hydroxide simultaneously, stir, feed steam heating, and temperature is controlled at 60 degrees centigrade, reacted 180 minutes, ageing is 12 hours then, with the brown coal modification; Add 15 kilograms of polyacrylamides in the brown coal of modification, it is an amount of to add hydrophilic compounds simultaneously, stirs, and makes it to combine together, promptly makes degradable liquid agricultural mulching film of the present invention.
Embodiment 3: get 1 ton in brown coal, and therefrom analytical test is carried out in sampling, calculating its content of humic acid is 55%; Brown coal are dropped into retort, drop into 200 kilograms of sodium hydroxide simultaneously, stir, feed steam heating, and temperature is controlled at 100 degrees centigrade, reacted 120 minutes, ageing is 24 hours then, with the brown coal modification; Add 10 kilograms of polyacrylamides in the brown coal of modification, it is an amount of to add hydrophilic compounds simultaneously, stirs, and makes it to combine together, promptly makes degradable liquid agricultural mulching film of the present invention.
Embodiment 4: get each 0.5 ton in weathered coal and brown coal, and therefrom analytical test is carried out in sampling, wherein, the content of humic acid of weathered coal is 55%, and the content of humic acid of brown coal is 45%; Weathered coal and brown coal are dropped into retort, drop into 160 kilograms of sodium hydroxide simultaneously, stir, feed steam heating, and temperature is controlled at 80 degrees centigrade, reacted 60 minutes, ageing is 36 hours then, with weathered coal and brown coal modification; In the weathered coal of modification and brown coal, add 15 kilograms of polyacrylamides, add simultaneously that hydrophilic compounds is an amount of, 20 kilograms of weedicides, 20 kilograms in sterilant and micronutrient boron, molybdenum be an amount of, stir, make it to combine together, promptly make degradable liquid agricultural mulching film of the present invention.
Claims (3)
1, a kind of production method of degradable liquid agricultural mulching film is characterized in that its processing step is:
(1) weathered coal or brown coal sample thief are carried out analytical test, calculate its content of humic acid;
(2) get weathered coal or brown coal and drop into retort, just drop into the sodium hydroxide of weathered coal and/or brown coal weight 5-20% simultaneously according to content of humic acid in weathered coal or the brown coal, stir, feed steam heating, and temperature is controlled at 60-100 degree centigrade, reacted 30-180 minute, ageing 12-36 hour then, with weathered coal or brown coal modification;
(3) in the weathered coal of modification or brown coal, add the polyacrylamide of modification weathered coal or brown coal amount 1-1.5%, add an amount of hydrophilic compounds simultaneously, stir, make it to combine together, promptly make degradable liquid agricultural mulching film of the present invention.
2, production method according to claim 1 is characterized in that in the said processing step (three), also adds weedicide and/or sterilant is an amount of.
3, production method according to claim 1 and 2 is characterized in that in the said processing step (three), in also adding, trace element is an amount of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910014957A CN101544804A (en) | 2009-04-29 | 2009-04-29 | Degradable liquid agricultural mulching film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910014957A CN101544804A (en) | 2009-04-29 | 2009-04-29 | Degradable liquid agricultural mulching film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101544804A true CN101544804A (en) | 2009-09-30 |
Family
ID=41192195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910014957A Pending CN101544804A (en) | 2009-04-29 | 2009-04-29 | Degradable liquid agricultural mulching film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101544804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325502A (en) * | 2017-07-27 | 2017-11-07 | 陕西科技大学 | A kind of water conservation getting fat Biodegradable agricultural mulch film and preparation method thereof |
| CN107459834A (en) * | 2017-09-05 | 2017-12-12 | 安徽华健生物科技有限公司 | A kind of method of the degradable biological mulch film prepared using olive processing-waste |
| CN108822813A (en) * | 2018-08-08 | 2018-11-16 | 天津渤海中联石油科技有限公司 | A kind of organic lignite method of purification |
-
2009
- 2009-04-29 CN CN200910014957A patent/CN101544804A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325502A (en) * | 2017-07-27 | 2017-11-07 | 陕西科技大学 | A kind of water conservation getting fat Biodegradable agricultural mulch film and preparation method thereof |
| CN107325502B (en) * | 2017-07-27 | 2019-03-26 | 陕西科技大学 | A kind of water conservation getting fat Biodegradable agricultural mulch and preparation method thereof |
| CN107459834A (en) * | 2017-09-05 | 2017-12-12 | 安徽华健生物科技有限公司 | A kind of method of the degradable biological mulch film prepared using olive processing-waste |
| CN108822813A (en) * | 2018-08-08 | 2018-11-16 | 天津渤海中联石油科技有限公司 | A kind of organic lignite method of purification |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090930 |