CN105191709A - Environment-friendly mulching film and preparation method thereof - Google Patents
Environment-friendly mulching film and preparation method thereof Download PDFInfo
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- CN105191709A CN105191709A CN201410263008.7A CN201410263008A CN105191709A CN 105191709 A CN105191709 A CN 105191709A CN 201410263008 A CN201410263008 A CN 201410263008A CN 105191709 A CN105191709 A CN 105191709A
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Abstract
The invention discloses an environment-friendly mulching film prepared from, by weight, 2-15 parts of polyvinyl acetate or polyvinyl alcohol or vinyl acetate and 85-98 parts of water. The environment-friendly mulching film replaces a traditional plastic mulching film which is difficult to degrade and recycle, can also achieve the moisture and heat preservation effect on soil, and avoids plastic pollution. In addition, after solidification layers remaining on the surface of sandy soil and soil enter sandy soil and soil, the granular structure and the breathability can be improved, and sandy soil and soil improvement and plant growth are facilitated.
Description
Technical field
The present invention relates to a kind of mulch film, this mulch film can be widely used in agricultural, industrial circle.
Background technology
Preserving soil moisture insulation is the important means that agricultural, forestry, gardening etc. improve plantation effect, mainly adopts the way that plastic film (as PE, PP etc.) covers at present.But this mulch film pole difficult degradation, reclaiming difficulty, to soil and environmental concerns, is generally acknowledged " white pollution ".
At present, vinyl acetate polymer and derivative product thereof are mainly used as the traditional field such as adhesive, coating, paper, chewing gum base and fabric finishing agent.
Summary of the invention
The object of the invention is to provide a kind of Environment protection mulch film, and this mulch film effectively can substitute the plastic material mulch film of current extensive use.
Another object of the present invention is the preparation method providing this Environment protection mulch film.
The object of the invention is achieved through the following technical solutions:
A kind of Environment protection mulch film, is characterized in that: with polyvinyl acetate, polyvinyl alcohol or vinylacetate-ethylene and water for raw material is prepared from.
A kind of Environment protection mulch film, it is characterized in that: the raw material that it comprises following weight part ratio is prepared from: 2-15 part polyvinyl acetate and 85-98 part water, or 2-15 part polyvinyl alcohol and 85-98 part water, or 2-15 part vinylacetate-ethylene and 85-98 part water, all with parts by weight.
Those skilled in the art know and clearly, polyvinyl acetate refers to the polymer of Vinyl Acetate Monomer homopolymerization, can be obtained by polymerisation in solution, emulsion polymerisation, suspension polymerisation or polymerisation in bulk, if desired can the auxiliary agent such as additional plasticizer, solvent.
The preparation method of above-mentioned Environment protection mulch film, comprise slurrying, spray, curing schedule obtain, it is characterized in that: described slurrying is that 2-15 weight account polyethylene alcohol is mixed slurrying with 85-98 weight parts water, or the polyvinyl acetate of 2-15 weight portion mixes slurrying with 85-98 weight parts water, or the vinylacetate-ethylene of 2-15 weight portion mixes slurrying with 85-98 weight parts water.
Preferably, above-mentioned slurrying is that 10-15 weight portion polyvinyl acetate is mixed slurrying with 85-90 weight parts water, or the polyvinyl alcohol of 3-5 weight portion mixes slurrying with 95-97 weight parts water, or 6-9 parts by weight acetic acid vinyl acetate-ethene mixes slurrying with 91-94 weight parts water.Be sprayed directly on top layer, soil after slurrying and solidify to form mulch film, be beneficial to soil water-retaining, insulation, Promoting plant growth.This mulch film can substitute traditional plastic film completely, not only eliminate white pollution, and residue also helps soil melioration.
Enforcement of the present invention, is mainly reflected in the great progress of generation and significant effect ecological, environmental protective:
Environment protection mulch film of the present invention, substituting traditional plastic film being difficult to degraded recovery, not only plays the effect of mulch film to preserving soil moisture, insulation equally, and avoids the generation of " white pollution ".In addition stay the bonding course of sandy soil, soil surface, enter sandy soil, soil also helps increases granular structure and gas permeability, promote sandy soil, soil melioration and plant growth.The present invention's vinyl acetate polymer or derivatives thereof used, belongs to safety and environmental protection, nontoxic emulsion type or water-soluble products in high molecular synthetic material, to plant, animal, microorganism all without harm, does not produce any secondary pollution.
Embodiment
Below by embodiment, the present invention is specifically described; what be necessary to herein means out is that following examples are only used to further illustrate the present invention; limiting the scope of the invention can not be interpreted as; without departing from the spirit and substance of the case in the present invention; the amendment that the inventive method, step or condition are done or replacement; all belong to scope of the present invention, below all with parts by weight.
embodiment 1 mulch film soil moisture conservation test
Get sandy soil 3 parts, weigh respectively.No. 1 sample is blank test ground.5 weight portion polyvinyl acetate are mixed slurrying with 95 weight parts waters, respectively according to 1kg/m
2and 1.5kg/m
2consumption be sprayed at No. 2 and No. 3 sandy soil surfaces, after No. 2 and the solidification of No. 3 sample surfaces, form mulch film, 3 samples spray the water of equivalent.Again sample is placed in natural seasoning under the higher fair weather of temperature, weighs every 1h, calculate the evaporation discharge of sample.
Get sandy soil 3 parts, weigh respectively.No. 1 sample is blank test ground.The polyvinyl alcohol of 9 weight portions is mixed slurrying with 91 weight parts waters, respectively according to 1kg/m
2and 1.5kg/m
2consumption be sprayed at No. 2 and No. 3 sandy soil surfaces, after No. 2 and the solidification of No. 3 sample surfaces, form mulch film, 3 samples spray the water of equivalent.Again sample is placed in natural seasoning under the higher fair weather of temperature, weighs every Ih, calculate the evaporation discharge of sample.
Get sandy soil 3 parts, weigh respectively.No. 1 sample is blank test ground.3 parts by weight acetic acid vinyl acetate-ethene are mixed slurrying with 97 weight parts waters, respectively according to 1kg/m
2and 1.5kg/m
2consumption be sprayed at No. 2 and No. 3 sandy soil surfaces, after No. 2 and the solidification of No. 3 sample surfaces, form mulch film, 3 samples spray the water of equivalent.Again sample is placed in natural seasoning under the higher fair weather of temperature, weighs every 1h, calculate the evaporation discharge of sample.
As calculated, after using vinyl acetate polymer or derivatives thereof of the present invention, with do not use product of the present invention blank test compared with, in soil moisture content evaporation discharge reduce 10-30%.Visible, mulch film water retention capacity of the present invention strengthens, and soil moisture conservation performance is good.
embodiment 2 is incubated test
In outdoor, 3 pieces of 10m are marked in a certain plot
2soil, the 1st piece of ground is used as blank test.The 2nd piece on the ground by 15 parts of vinylacetate-ethylene emulsions and 85 parts of mixed uniformly emulsions of water according to 1.5kg/m
2consumption soil surface uniform spray solidification conjunctiva.The 3rd piece on the ground by 15 parts of vinylacetate-ethylene emulsions and 85 parts of mixed uniformly emulsions of water according to 3kg/m
2consumption soil surface uniform spray solidification, dry conjunctiva.Thermometer is inserted 10cm under earth's surface by three blocks of soils respectively, records the temperature of three blocks of soil every 1 hour simultaneously; Result of the test shows, has sprayed emulsion compared with the soil not spraying emulsion, temperature is high 1-2 DEG C, illustrates that the mulch film obtained is conducive to the maintenance of soil temperature, is beneficial to plant growth.
Adopt the polyvinyl acetate emulsion of above-mentioned weight portion, polyvinyl alcohol mixes slurrying with water, obtained mulch film also has above-mentioned same effect.
embodiment 3 substitutes traditional plastic film test
Soil marks identical three equal parts, at first fertilizing, watering sowing season, then program request corn, last earthing, first part of soil at this point as blank test, by 6 parts of polyvinyl acetate emulsions and 94 parts of water Homogeneous phase mixing on second part of soil, according to 2kg/m
2consumption be sprayed at soil surface, the 3rd part of soil covers general agricultural plastic ground membrane.Thermometer is inserted 10cm under earth's surface by three points of soils respectively.Traditionally agricultural planting mode manages, periodic measurement soil temperature, record corn emergence rate.Test records, and experimental field the corn emergence rate of 1 is 80%, and experimental field the corn emergence rate of 2 is 99%, and experimental field the corn emergence rate of 3 is 98%.
Adopt the polyvinyl alcohol of above-mentioned weight portion, vinylacetate-ethylene emulsion mixes slurrying with water, the alternate test of traditional mulch film made by obtained mulch film, can reach above-mentioned same effect.
Show from above result of the test, polyvinyl alcohol, vinylacetate-ethylene emulsion, polyvinyl acetate emulsion can tangle film forming mutually, and the solidified film that formation bonding with soil surface is continuous, fine and close, cover soil surface, air flowing in effective prevention soil, the moisture evaporation stoped or reduce in soil and thermal loss, thus reach the effect suitable with conventional plastic mulch film.More science is, this vinyl acetate polymer or derivatives thereof solidified film convenient spraying, thickness arbitrarily can be regulated by consumption, be combined very tight with earth's surface, bonding course is easily degraded, do not need to reclaim, turning over buries can also improve soil, especially eliminates " white pollution " that conventional plastic mulch film brings.
embodiment 4
Get 3 parts of polyvinyl alcohol and mix slurrying with 97 parts of running water, machinery or artificial spray obtain mulch film, fountain height 1kg/m in soil table, solidification
2.
embodiment 5
Get after 8 parts of vinylacetate-ethylene powder mix with 92 parts of running water, machinery or artificial spray obtain mulch film, fountain height 0.6kg/m in soil table, solidification
2.
embodiment 6
Get after 10 parts of polyvinyl acetate mix with 90 parts of running water, machinery or artificial spray obtain mulch film, fountain height 0.6kg/m in soil table, solidification
2.
Claims (4)
1. an Environment protection mulch film, is characterized in that: with polyvinyl acetate, polyvinyl alcohol or vinylacetate-ethylene and water for raw material is prepared from.
2. an Environment protection mulch film, it is characterized in that: the raw material that it comprises following weight part ratio is prepared from: 2-15 part polyvinyl acetate and 85-98 part water, or 2-15 part polyvinyl alcohol and 85-98 part water, or 2-15 part vinylacetate-ethylene and 85-98 part water, all with parts by weight.
3. the preparation method of Environment protection mulch film as claimed in claim 1 or 2, comprise slurrying, spray, curing schedule obtain, it is characterized in that: described slurrying is that 2-15 weight account polyethylene alcohol is mixed slurrying with 85-98 weight parts water, or the polyvinyl acetate of 2-15 weight portion mixes slurrying with 85-98 weight parts water, or the vinylacetate-ethylene of 2-15 weight portion mixes slurrying with 85-98 weight parts water.
4. the preparation method of Environment protection mulch film as claimed in claim 3, it is characterized in that: described slurrying is that 10-15 weight portion polyvinyl acetate is mixed slurrying with 85-90 weight parts water, or the polyvinyl alcohol of 3-5 weight portion mixes slurrying with 95-97 weight parts water, or 6-9 parts by weight acetic acid vinyl acetate-ethene mixes slurrying with 91-94 weight parts water.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110249874A (en) * | 2019-07-19 | 2019-09-20 | 陕西科技大学 | A kind of powdery covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
CN110249875A (en) * | 2019-07-19 | 2019-09-20 | 陕西科技大学 | A kind of environment-friendly type covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
CN111269517A (en) * | 2018-12-05 | 2020-06-12 | 杭州沃福生物科技有限公司 | Water-retaining liquid mulching film and preparation method and application thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111269517A (en) * | 2018-12-05 | 2020-06-12 | 杭州沃福生物科技有限公司 | Water-retaining liquid mulching film and preparation method and application thereof |
CN110249874A (en) * | 2019-07-19 | 2019-09-20 | 陕西科技大学 | A kind of powdery covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
CN110249875A (en) * | 2019-07-19 | 2019-09-20 | 陕西科技大学 | A kind of environment-friendly type covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
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Application publication date: 20151230 |