CN1094960C - Degradable agricultural ground-covering film - Google Patents
Degradable agricultural ground-covering film Download PDFInfo
- Publication number
- CN1094960C CN1094960C CN99108160A CN99108160A CN1094960C CN 1094960 C CN1094960 C CN 1094960C CN 99108160 A CN99108160 A CN 99108160A CN 99108160 A CN99108160 A CN 99108160A CN 1094960 C CN1094960 C CN 1094960C
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- Prior art keywords
- soil
- film
- degradable
- add
- adhesive
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Abstract
The present invention relates to a production technique for a degradable agricultural mulching film, which has the technical scheme that natural marsh soil or peat coal having high content of organic substances is used as a main material, a degradable adhesive agent and a degradable additive agent are added, and the brownish-black mulching film is produced through processing. The mulching film has the similar function to that of plastic mulching films and not only overcomes the defect of environmental pollution, but also can increase soil nutrient and improve the soil.
Description
The present invention is a kind of manufacturing technology of degradable agricultural ground-covering film.
Agricultural film is many with its applicable crops, and amount of increase in production is big and good in economic efficiency, has become one of important agricultural chemicals of China.The agricultural film material that uses mainly is a polyethylene at present, comprises new LDPE (film grade), linear low density polyethylene, high density polyethylene(HDPE) and polyethylene blend.Also have the straw fiber mulch film, and development starch copolymerization Biodegradable films etc.
According to investigations, plastic film mulching cultivation can make various crop stablize precocious 5-20 days than outdoor cropping, volume increase 30-50%, and increment 40-50%, what have increases both production and value more than one times.
, to use mulch film more and more at home and abroad, to reduce film thickness in order reducing cost when making mulch film as far as possible, this brings difficulty for the removing and the recovery of waste mulching film, has increased the pollution of soil and environment.So, develop and can dissolve the needs that mulch film is agricultural development and Sustainable development.
We will utilize natural resource to go to overcome natural deficiency, to be reached for the purpose of human service.
In soil science, be the natural organic matter classification of soils swamp soil and peat soil, concrete (subclass) has meadow-boggy soil, salinization swamp soil, corruption to plant matter swamp soil, peaty moor soil, peat soil and slime-swamp soil.In general, organic content reaches 50-70% in peaty moor soil and the peat soil, can reach 80% individually, secondly plants matter swamp soil and meadow-boggy soil for corruption.
The present invention is with natural organic soil, as: meadow-boggy soil, it is main raw material (60-85%) that matter swamp soil and peaty moor soil or peat are planted in corruption, mix stirring with the water of its 2-5 times weight and be heated to 60-90 ℃, transfer PH=6.8-7.5, add degradable adhesive then, degradable adhesive comprises natural glue and composite adhesives, natural glue, as: Starch Adhesive, the rosin tackiness agent, shellac bond, protein binder, the arab resin tackiness agent, wheat paint binder etc., composite adhesives, as: polyvinyl alcohol, soluble cotton, carboxymethyl cellulose etc.The weight percentage that tackiness agent adds is 10-15%, insulated and stirred 15-45 minute, adds the additive of 0-30% weight percentage at last.Additive comprises dispersion agent, as: urea, Na
4P
2O
7, Na
5P
3O
10, NH
4Cl etc. and softening agent, as: Xylitol, N.F,USP MANNITOL, epoxy soybean wet goods.Continue to stir insulation and take out reaction solution, casting film-forming on sheet glass, drying after 10-30 minute.The aqueous solution that contains 20% borax with heating during approaching doing carries out making the brownish black mulch film after the WATER REPELLENT.Can dissolve or plough in 1.5-2 month after this mulch film covers and enter soil and become nutrient.
This mulch film possesses the similar effect of plastic film, has but not only overcome the shortcoming of contaminate environment, and has increased soil nutrient and can improving the soil.
[embodiment 1]
Getting 10 gram meadow-boggy soils (PH=6.22) and 20ml water packs in the four-hole reactor, be heated to 70 ℃ while stirring, add three ammoniacal liquor neutralizations, add 2 gram corn starch adhesive agents and 1 gram Xylitol after spending 30 minutes, the maintenance temperature also stirred 30 minutes, utilize casting method film forming on sheet glass then, 20% borax solution with heating during approaching doing carries out the surface waterproofing processing.Survey its film dynamic performance, tensile loading is (N) 1.3, and elongation at break is (%) 90, and right-angle tearing load (N) is 0.4.
[embodiment 2]
Add 10 gram corruption in the four-hole reactor and plant matter swamp soil (PH=6.7) and 30ml water, and 0.2 gram NaOH, be heated to 85 ℃ while stirring, added later soy protein adhesive 2g and PVA tackiness agent 0.5 gram in 30 minutes, N.F,USP MANNITOL 1 gram, keep temperature and continue stirring after 20 minutes, film forming drying on sheet glass is carried out WATER REPELLENT by embodiment 1, survey the mechanical property of its film, tensile loading (N) is 14.1, and elongation at break (%) is 110, and right-angle tearing load (N) is 0.5.
[embodiment 3]
Get peat 10 grams, undertaken by the operation of embodiment 2, survey its film dynamic performance, tensile loading (N) is 17.3, and elongation at break (%) is 130, and right-angle tearing load (N) is 0.6.
The art of this patent is nuisanceless in force, and is pollution-free, easy to operation.
Claims (3)
1. the manufacture method of a degradable agricultural ground-covering film, it is characterized in that: with natural organic matter soil or peat is main raw material, add 2-5 water mixing doubly and be heated with stirring to 60-90 ℃, transfer PH=6.8-7.5, add degradable adhesive then, insulated and stirred 15-45 minute, add additive at last, continued insulated and stirred 10-30 minute, casting film-forming drying on sheet glass, after carrying out WATER REPELLENT with hot borax solution when doing, promptly make the agricultural film that brownish black can be dissolved.
2. film manufacturing method as claimed in claim 1ly, it is characterized in that: natural organic matter soil is that matter swamp soil, peaty moor soil are planted in meadow-boggy soil or corruption; Degradable adhesive is: Starch Adhesive or rosin tackiness agent, shellac bond, protein binder, arab resin tackiness agent, wheat paint binder, polyvinyl alcohol, soluble cotton, carboxymethyl cellulose; Additive comprises that dispersion agent is urea or Na
4P
2O
7, Na
5P
3O
10, NH
4Cl; Softening agent is an Xylitol, N.F,USP MANNITOL, epoxy soybean oil.
3. film manufacturing method as claimed in claim 1 or 2, it is characterized in that: natural organic matter soil or peat, the weight percentage of degradable adhesive and additive is respectively: 60-85%, 10-15% and 0-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99108160A CN1094960C (en) | 1999-06-28 | 1999-06-28 | Degradable agricultural ground-covering film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99108160A CN1094960C (en) | 1999-06-28 | 1999-06-28 | Degradable agricultural ground-covering film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1243850A CN1243850A (en) | 2000-02-09 |
| CN1094960C true CN1094960C (en) | 2002-11-27 |
Family
ID=5273170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99108160A Expired - Fee Related CN1094960C (en) | 1999-06-28 | 1999-06-28 | Degradable agricultural ground-covering film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1094960C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545232C (en) * | 2003-11-12 | 2009-09-30 | 桦甸市裕丰泥炭生物工程有限责任公司 | Environment protection mulch film |
| CN106183153B (en) * | 2015-04-30 | 2018-03-16 | 汤晓峰 | Natural fiber felt cloth and production method thereof |
| CN104927265A (en) * | 2015-06-02 | 2015-09-23 | 铜陵方正塑业科技有限公司 | Oil-proof pea protein powder-based full-degradable plastic film and preparation method thereof |
| CN106718414A (en) * | 2016-12-07 | 2017-05-31 | 魏坤年 | A kind of degradable high-performance string synthesis agricultural mulching and preparation method thereof |
| CN107211785B (en) * | 2017-07-12 | 2020-02-18 | 魏生龙 | Method for large-area soil preparation and rice planting in desert area |
| CN112300595B (en) * | 2020-11-30 | 2022-03-11 | 甘肃济洋塑料有限公司 | Environment-friendly full-biodegradable mulching film and preparation method thereof |
| CN113234258A (en) * | 2021-06-02 | 2021-08-10 | 李明会 | Biodegradable agricultural mulching film and production process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302244A (en) * | 1996-05-20 | 1997-11-25 | Nagai Taoru Kk | Biodegradable resin composition and biodegradable resin molding |
| CN1165735A (en) * | 1997-04-29 | 1997-11-26 | 河北京狮草纤维制品有限公司 | Method for prodn. of grass fibre adhesive film |
-
1999
- 1999-06-28 CN CN99108160A patent/CN1094960C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09302244A (en) * | 1996-05-20 | 1997-11-25 | Nagai Taoru Kk | Biodegradable resin composition and biodegradable resin molding |
| CN1165735A (en) * | 1997-04-29 | 1997-11-26 | 河北京狮草纤维制品有限公司 | Method for prodn. of grass fibre adhesive film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1243850A (en) | 2000-02-09 |
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