CN103832035A - Special shading and cooling greenhouse film for culturing edible fungi - Google Patents
Special shading and cooling greenhouse film for culturing edible fungi Download PDFInfo
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- CN103832035A CN103832035A CN201410087008.6A CN201410087008A CN103832035A CN 103832035 A CN103832035 A CN 103832035A CN 201410087008 A CN201410087008 A CN 201410087008A CN 103832035 A CN103832035 A CN 103832035A
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 241000233866 Fungi Species 0.000 title abstract description 10
- 238000012258 culturing Methods 0.000 title abstract description 4
- 239000010410 layer Substances 0.000 claims abstract description 113
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 41
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 41
- 229920001684 low density polyethylene Polymers 0.000 claims description 38
- 239000004702 low-density polyethylene Substances 0.000 claims description 38
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 32
- 238000001125 extrusion Methods 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 21
- 239000011256 inorganic filler Substances 0.000 claims description 19
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 18
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims description 16
- -1 polypropylene Polymers 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 239000004698 Polyethylene Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229920000573 polyethylene Polymers 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 229920001038 ethylene copolymer Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
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- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001672018 Cercomela melanura Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention discloses a special shading and cooling greenhouse film for culturing edible fungi. The film sequentially comprises a transmitting protective layer, a silver reflective layer, a first milky-white reflective layer, a second milky-white reflective layer and a black insulating layer from outside to inside. According to the special shading and cooling greenhouse film for culturing edible fungi produced according to the technical scheme, the shading effect can be furthest achieved by utilizing total reflection, double diffuse reflection and absorption of the multi-layer composite film to sunlight in hot summer, injury of long-time solarization to edible fungi in a greenhouse can be prevented, the environmental temperature in the greenhouse can be effectively reduced, a cold and damp environment for growth of edible fungi is created, and the yield and quality of edible fungi can be improved. Furthermore, the greenhouse film has excellent mechanical and weather tolerance, and the service life of the greenhouse film can be effectively prolonged, so that waste of greenhouse films can be reduced, and the social theme of energy-saving and environment-friendliness can be met.
Description
Technical field
The present invention relates to agriculture greenhouse film field, be specifically related to a kind of special shading cooling awning film of edible mushroom of cultivating.
Background technology
China is the current country of maximum edible fungus culturing, processing, trade and consumption in the world.There is relevant practitioner more than 1,800 ten thousand in the whole nation, more than 60 of cultivars, and by last year, China's edible mushroom total output has accounted for the more than 80% of Gross World Product.According to Ministry of Agriculture statistics, at home in plant husbandry, edible mushroom is only second to grain, cotton, oil, dish, really, occupies the 6th.
It is shady and cool moist that edible mushroom is liked mostly, and cultivation process need booth shelters from heat or light, and avoids being exposed to the sun of long-term sunlight as far as possible.In the past, the agricultural straw screen or mat of mushroom, bark etc. shelter from heat or light at ceiling, and last century end, the sunshade net of black starts to widely apply in edible mushroom booth.But in recent years, the sunshade net that it is found that black was absorbing after a large amount of luminous energy often sultrylyyer, was unfavorable for Edible Fungi, and especially summer, rotten excellent situation was quite general.A kind of new black and white composite plastic film starts to promote in some region subsequently, this kind of outer Bai Neihei of film, when covering, white faces up, there is powerful reverberation ability, and black inwardly stops light by penetrating, play sunshading and temperature reducing effect, temperature of shed is than low 6-8 ℃ of other paulin and film covering (black and white film booth cultivation black fungus bacterial rod technology, Edible and medicinal mushrooms2013,21 (3): 190～191).At present, the patent that black and white film is relevant relates to electron trade more, as CN202727425U and CN102729552A etc., and the Patents of awning film relates to anti-droplet (as CN103264563A and CN202439313U etc.) or heat-insulating plastic sheeting for farm use (as CN203120582U, CN102187794A and CN2598337Y etc.) more, do not have to relate to and cultivate edible mushroom.
In recent years, summer high-temperature weather was constant, and the quantity and quality of many hot areas edible mushroom sharply declines, and has caused no small economic loss to peasant.Main cause is, nowadays the hot highest temperature in summer can reach more than 40 ℃, and the white layer of black and white film is diffuse surface, cannot keep out so strong solar radiation, cause greatly sunlight to be absorbed by black layer, be unfavorable for the growth of edible mushroom to such an extent as to temperature in canopy sharply rises.This is a difficult problem closely bound up and in the urgent need to address with peasant benefit, but does not occur yet so far effective solution.
Summary of the invention
For an above-mentioned difficult problem, the invention provides a kind of special shading cooling awning film of edible mushroom of cultivating, concrete technical scheme of the present invention is as follows:
The present invention is a kind of special shading cooling awning film of edible mushroom of cultivating, and is followed successively by from outside to inside light transmission protective layer, silvery reflection layer, the first milky white reflector layer, the second milky white reflector layer and black heat-insulation layer.
As further improvement, the plastic film layers that light transmission protective layer of the present invention is high printing opacity, light transmittance is more than 95%.
As further improvement, light transmission protective layer thickness of the present invention is 15 μ m～24 μ m.
As further improvement, the main component of light transmission protective layer of the present invention is one or more in pet film (PET), biaxial tension pet film (BOPET), low density polyethylene (LDPE) (LDPE), linear low-density polyethylene film (LLDPE), metallocene linear-low density polyethylene (mLLDPE), modified polypropylene film (PP) or ethene improved-acetate ethylene copolymer film.
As further improvement, the main component of silvery reflection layer of the present invention is silvery reflection powder and polyethylene film.
As further improvement, the thickness of silvery reflection layer of the present invention is 20 μ m～30 μ m.
As further improvement, the polyethylene film in silvery reflection layer of the present invention is the co-extrusion film of LLDPE and LDPE, and LLDPE content is that 30%～60%, LDPE content is 20%～65%.
As further improvement, in silvery reflection layer of the present invention, silvery reflection powder is aluminium powder, particle diameter 500 order～3000 orders, and addition is 10%～20%.
As further improvement, the main component of the first milky white reflector layer of the present invention is inorganic filler and polyethylene film.
As further improvement, the thickness of the first milky white reflector layer of the present invention is 20 μ m～30 μ m.、
As further improvement, the polyethylene film in the first milky white reflector layer of the present invention is the co-extrusion film of LLDPE and LDPE, and LLDPE content is that 25%～60%, LDPE content is 20%～60%.
As further improvement, the inorganic filler in the first milky white reflector layer of the present invention is one or more in titanium dioxide, silica or calcium carbonate, particle diameter 500 order～1000 orders, and addition is 10%～30%.
As further improvement, the main component of the second milky white reflector layer of the present invention is inorganic filler and polyethylene film.
As further improvement, the thickness of the second milky white reflector layer of the present invention is 20 μ m～30 μ m.
As further improvement, the polyethylene film in the second milky white reflector layer of the present invention is the co-extrusion film of LLDPE and LDPE, and LLDPE content is that 25%～60%, LDPE content is 20%～60%.
As further improvement, the inorganic filler in the second milky white reflector layer of the present invention is one or more in titanium dioxide, silica and calcium carbonate, particle diameter 1000 order～2500 orders, and addition is 10%～30%.
As further improvement, the main component of black heat-insulation layer of the present invention is black filler and polyethylene film.
As further improvement, the thickness of black heat-insulation layer of the present invention is 25 μ m～40 μ m.
As further improvement, the polyethylene film in black heat-insulation layer of the present invention is the co-extrusion film of LLDPE and LDPE and mLLDPE, and LLDPE content is that 25%～50%, LDPE content is that the content of 20%～45%, mLLDPE is 10%～30%.
As further improvement, the black filler in black heat-insulation layer of the present invention is carbon black, particle diameter 500 order～3000 orders, and addition is 10%～35%.
Adopt beneficial effect of the present invention as follows:
The special shading cooling of the cultivation edible mushroom awning film making according to technical solution of the present invention, in hot summer, utilize total reflection, dual diffuse reflection and the absorption of multilayer complex films to sunshine, can bring into play interception in amplitude peak ground, prevent from tanning by the sun for a long time the injury causing edible mushroom in canopy, and effectively reduce the environment temperature in canopy, and build the sombre wet environment of edibility bacteria growing, be conducive to improve the quantity and quality of edible mushroom.In addition, this awning film also has excellent mechanics and weather resistance, can effectively extend its service life, thereby reduces the waste of awning film, meets the social theme of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of cultivating the special shading cooling of edible mushroom awning film.
In figure, 1 is light transmission protective layer, and 2 is silvery reflection layer, and 3 is the first milky white reflector layer, and 4 is the second milky white luminescent layer, and 5 is black heat-insulation layer.
The specific embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described further:
Described is a kind of special shading cooling awning film of edible mushroom of cultivating, and is followed successively by from outside to inside light transmission protective layer 1, silvery reflection layer 2, the first milky white reflector layer 3, the second milky white reflector layer 4 and black heat-insulation layer 5.
Wherein, light transmission protective layer 1 is BOPET film, thickness 15 μ m, light transmittance 97%.This layer of Main Function is that protection silvery reflection layer 2 is not affected reflective by scratch, and the high light transmittance of BOPET can guarantee that sunshine almost entirely enters the surface of a lower skim and is reflected.
Silvery reflection layer 2 thickness 20 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, content is respectively 30%, 55%, aluminium powder 3000 orders, addition is 15%.Aluminium powder any surface finish, covering power is strong, good to the reflecting effect of light and heat, common aluminium powder can reflect visible light, ultraviolet light and infrared light 60%～90%.Owing to being sheet on aluminium powder microcosmic, in carrier, have and be easily formed at the parallel feature of substrate, thereby the plastic sheeting that is filled with aluminium powder can produce total reflection to sunshine, approximately there is the sunshine of 80% left and right to be reflected at this, remaining 20% penetrates into lower one deck.
The first milky white reflector layer 3 thickness 20 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 25%, 60%, and inorganic filler is silica, 500 orders, addition is 15%.Because silica is spheroidal particle, after dispersion, make the roughness of film surface and specific area greatly increase, therefore can produce diffuse reflection to sunshine; The second milky white reflector layer 4 thickness 20 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 30%, 60%, and inorganic filler is silica, 2500 orders, addition is 10%.Due to the particle diameter difference of inorganic filler in first and second milky white reflector layer 4, cause the surface roughness of reflector layer also inconsistent, so 20% remaining sunshine remains little after this two-layer surface with different roughness produces diffuse reflection.
Black heat-insulation layer 5 thickness 30 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE and mLLDPE, and content is respectively 35%, 30% and 20%, and filler is carbon black, 500 orders, addition is 15%.This layer mainly contains two functions, and before one side can absorb and penetrate, which floor residue sunshine, can intercept in cold winter the heat radiation on ground on the other hand, keeps comparatively comfortable growing environment in canopy.
To adopt the awning film prepared of this scheme of the invention and commercially available awning film for the edible mushroom cultivation in base under one's name of entrusting of Taizhou means of agricultural production, select afternoon 13:00 in summer, first testing outdoor temperature is 33 ℃, tests afterwards the temperature in canopy, choose five positions and survey five temperature, try to achieve mean temperature.Temperature in commercially available awning film is 44 ℃, and the temperature that adopts scheme of the invention to prepare in awning film is 34 ℃, and cooling-down effect is outstanding.Adopting scheme of the invention to prepare on awning film lid layer sunshade net again, then testing cooling-down effect, outdoor 34, ℃ indoor 28, ℃ this temperature is the safe temperature of edible fungi growth.
Comparative example 1
Design one and the similar four layers of composite greenhouse film of such scheme, the silvery reflection layer in the middle of removing, is respectively light transmission protective layer, the first milky white reflector layer, the second milky white reflector layer and black heat-insulation layer from top to bottom.And these four layers of composite greenhouse films are carried out to thermometric with commercially available awning film, five layers of composite greenhouse film under same environment, 33 ℃ of outdoor temperatures, temperature in commercially available awning film is 44, and the temperature in ℃ four layers of awning film is 39 ℃, and the temperature in five layers of awning film is 34 ℃.
As can be seen here, technical scheme of the present invention is to have increased silvery reflection layer with respect to the difference technical characterictic of comparative example 1, has outstanding reflection and heat insulation effect, obvious to the cooling-down effect of edible mushroom booth inside.
Described is a kind of special shading cooling awning film of edible mushroom of cultivating, and is followed successively by from outside to inside light transmission protective layer 1, silvery reflection layer 2, the first milky white reflector layer 3, the second milky white reflector layer 4 and black heat-insulation layer 5.
Wherein, light transmission protective layer 1 is MODIFIED PP film, thickness 20 μ m, light transmittance 96%; Silvery reflection layer 2 thickness 25 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, content is respectively 55%, 25%, aluminium powder 1500 orders, addition is 20%; The first milky white reflector layer 3 thickness 25 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 55%, 30%, and inorganic filler is titanium dioxide, 800 orders, addition is 15%; The second milky white reflector layer 4 thickness 25 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 60%, 25%, and inorganic filler is titanium dioxide, 1500 orders, addition is 15%; Black heat-insulation layer 5 thickness 30 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE and mLLDPE, and content is respectively 45%, 20% and 15%, and filler is carbon black, 1500 orders, addition is 20%.
Comparative example 2
Design a kind of from embodiment 2 technical schemes are similar but five layers of composite greenhouse film that structural order is different; be respectively from top to bottom light transmission protective layer, the first milky white reflector layer, the second milky white reflector layer, black heat-insulation layer and silvery reflection layer, referred to as five layers of composite greenhouse film 2.Five layers of composite greenhouse film that adopt embodiment 3 technical schemes to prepare are carried out to thermometric with five layers of composite greenhouse film 2 under same environment, outdoor temperature 35, the temperature in ℃ five layers of awning film is 34 ℃, the temperature in five layers of awning film 2 is 40 ℃.
As can be seen here, technical scheme of the present invention is silvery reflection layer to design at the second layer with respect to the difference technical characterictic of comparative example 2, can at utmost bring into play the function of its reverberation photograph, and when by silvery reflection layer as for innermost layer after, greatly reduce effect of silvery reflection layer, cause cooling-down effect variation.
Described is a kind of special shading cooling awning film of edible mushroom of cultivating, and is followed successively by from outside to inside light transmission protective layer 1, silvery reflection layer 2, the first milky white reflector layer 3, the second milky white reflector layer 4 and black heat-insulation layer 5.
Wherein, light transmission protective layer 1 is (mLLDPE+LLDPE+LDPE) film, thickness 24 μ m, light transmittance 97%; Silvery reflection layer 2 thickness 30 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, content is respectively 30%, 60%, aluminium powder 1000 orders, addition is 10%; The first milky white reflector layer 3 thickness 30 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 35%, 50%, and inorganic filler is calcium carbonate, 500 orders, addition is 15%; The second milky white reflector layer 4 thickness 30 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 25%, 55%, and inorganic filler is calcium carbonate, 1000 orders, addition is 20%; Black heat-insulation layer 5 thickness 40 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE and mLLDPE, and content is respectively 45%, 30% and 10%, and filler is carbon black, 3000 orders, addition is 15%.
Comparative example 3
A kind of five layers of composite greenhouse film of design, ground floor composition is LLDPE, thickness 24 μ m, second layer composition is (LLDPE+ aluminium powder), thickness 30 μ m, aluminium powder 1000 orders, addition is 10%; Threeply degree 30 μ m, matrix is LLDPE, inorganic filler is calcium carbonate, 500 orders, addition is 15%; The 4th layer thickness 30 μ m, matrix is LLDPE, inorganic filler is calcium carbonate, 1000 orders, addition is 20%; Layer 5 thickness 40 μ m, matrix is LLDPE, filler is carbon black, 3000 orders, addition is 15%.
The embodiment 3 of same thickness, same grammes per square metre is carried out to Mechanics Performance Testing with the awning film of comparative example 3 simultaneously, and test result is as follows: the film in embodiment 3, the longitudinal 39MPa of hot strength, laterally 31MPa, elongation at break vertical 680%, horizontal 120%; Film in comparative example 3, the longitudinal 23MPa of hot strength, laterally 18MPa, elongation at break longitudinal 290%, horizontal 88%.
As can be seen here, technical scheme of the present invention is to have added mLLDPE in black heat-insulation layer (5) with respect to the difference technical characterictic of comparative example 3, and mLLDPE adds the mechanical property that strengthens awning film, the service life of prolongation awning film.
Described is a kind of special shading cooling awning film of edible mushroom of cultivating, and is followed successively by from outside to inside light transmission protective layer 1, silvery reflection layer 2, the first milky white reflector layer 3, the second milky white reflector layer 4 and black heat-insulation layer 5.
Wherein, light transmission protective layer 1 is (LLDPE+LDPE+mLLDPE) film, and content is respectively 35%, 45% and 20%, thickness 18 μ m, light transmittance 97%; Silvery reflection layer 2 thickness 24 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, content is respectively 30%, 55%, aluminium powder 2500 orders, addition is 15%; The first milky white reflector layer 3 thickness 28 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 25%, 60%, and inorganic filler is titanium dioxide, 900 orders, addition is 15%; The second milky white reflector layer 4 thickness 22 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE, and content is respectively 25%, 60%, and inorganic filler is silica, 2500 orders, addition is 15%; Black heat-insulation layer 5 thickness 32 μ m, in its main component, matrix is the co-extrusion film of LLDPE and LDPE and mLLDPE, and content is respectively 35%, 25% and 15%, and filler is carbon black, 2000 orders, addition is 25%.
What more than enumerate is only part specific embodiment of the present invention; obviously, the invention is not restricted to above embodiment, can also have many distortion; all distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (10)
1. cultivate the special shading cooling awning film of edible mushroom for one kind; it is characterized in that, described awning film is followed successively by light transmission protective layer (1), silvery reflection layer (2), the first milky white reflector layer (3), the second milky white reflector layer (4) and black heat-insulation layer (5) from outside to inside.
2. the special shading cooling awning film of cultivation edible mushroom according to claim 1, is characterized in that, the plastic film layers that described light transmission protective layer (1) is high printing opacity, and light transmittance is more than 95%, and thickness is 15 μ m～24 μ m.
3. the special shading cooling awning film of cultivation edible mushroom according to claim 2; it is characterized in that, the main component of described light transmission protective layer (1) is one or more in pet film (PET), biaxial tension pet film (BOPET), low density polyethylene (LDPE) (LDPE), linear low-density polyethylene film (LLDPE), metallocene linear-low density polyethylene (mLLDPE), modified polypropylene film (PP) or ethene improved-acetate ethylene copolymer film.
4. the shading cooling awning film special according to the cultivation edible mushroom described in claim 1 or 2 or 3, is characterized in that, the thickness of described silvery reflection layer (2) is 20 μ m～30 μ m, comprises silvery reflection powder and polyethylene film.
5. the special shading cooling awning film of cultivation edible mushroom according to claim 4, it is characterized in that, described polyethylene film is the co-extrusion film of LLDPE and LDPE, LLDPE content is 30%～60%, LDPE content is 20%～65%, described silvery reflection powder is aluminium powder, particle diameter 500 order～3000 orders, and addition is 10%～20%.
6. the special shading cooling awning film of cultivation edible mushroom according to claim 1, is characterized in that, the first described milky white reflector layer (3), the thickness of the second milky white reflector layer (4) are 20 μ m～30 μ m, comprise inorganic filler and polyethylene film.
7. the special shading cooling awning film of cultivation edible mushroom according to claim 6, is characterized in that, described polyethylene film is the co-extrusion film of LLDPE and LDPE, and LLDPE content is that 25%～60%, LDPE content is 20%～60%.
8. the special shading cooling awning film of cultivation edible mushroom according to claim 6, it is characterized in that, described inorganic filler is one or more in titanium dioxide, silica or calcium carbonate, particle diameter 500 order～1000 orders of the inorganic filler of the first described milky white reflector layer (3), addition is 10%～30%; Particle diameter 1000 order～2500 orders of the inorganic filler in the second milky white reflector layer (4), addition is 10%～30%.
9. according to the special shading of the cultivation edible mushroom described in claim 5 or 6 or 7 or 8 cooling awning film, it is characterized in that, described black heat-insulation layer (5) thickness be 25 μ m～40 μ m, comprise black filler and polyethylene film.
10. the special shading cooling awning film of cultivation edible mushroom according to claim 9, it is characterized in that, polyethylene film in described black heat-insulation layer (5) is the co-extrusion film of LLDPE and LDPE and mLLDPE, LLDPE content is 25%～50%, LDPE content is that the content of 20%～45%, mLLDPE is 10%～30%, and described black filler is carbon black, particle diameter 500 order～3000 orders, addition is 15%～35%.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104885780A (en) * | 2015-05-04 | 2015-09-09 | 丽水市瑞芝食用菌科技有限公司 | Insulation material capable of reducing temperature in edible fungus greenhouse and matched cultivation process |
| CN105330935A (en) * | 2015-11-17 | 2016-02-17 | 山东省潍坊市农业科学院 | Light-scattering, cooling and thermal-radiation regulating membrane and preparation method |
| CN105330936A (en) * | 2015-11-17 | 2016-02-17 | 山东省潍坊市农业科学院 | A light astigmatism heat insulation thermal radiation control film and preparation method thereof |
| CN105542291A (en) * | 2016-03-10 | 2016-05-04 | 天津市新姿科技发展有限公司 | Ultra-thin PE (polyethylene) film for packaging bag |
| JP2016145471A (en) * | 2015-02-06 | 2016-08-12 | 清水建設株式会社 | High performance thermal barrier sheet and structure having the same |
| CN107541807A (en) * | 2015-11-17 | 2018-01-05 | 山东省潍坊市农业科学院 | A kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network |
| CN108495547A (en) * | 2016-01-22 | 2018-09-04 | 卢德维格斯文松股份公司 | Screen for hothouse |
| CN110537433A (en) * | 2019-08-24 | 2019-12-06 | 山东金蚂蚁塑业有限公司 | Scattering-preventing diffusion film for fruit and vegetable greenhouse |
| CN114133648A (en) * | 2021-12-30 | 2022-03-04 | 山东东大塑业有限公司 | Reflection-type diffuse scattering greenhouse film and preparation method thereof |
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| JP2016145471A (en) * | 2015-02-06 | 2016-08-12 | 清水建設株式会社 | High performance thermal barrier sheet and structure having the same |
| CN104885780A (en) * | 2015-05-04 | 2015-09-09 | 丽水市瑞芝食用菌科技有限公司 | Insulation material capable of reducing temperature in edible fungus greenhouse and matched cultivation process |
| CN107541807A (en) * | 2015-11-17 | 2018-01-05 | 山东省潍坊市农业科学院 | A kind of preparation method of agricultural facility astigmatism heat radiation temperature control protection network |
| CN107541807B (en) * | 2015-11-17 | 2019-11-08 | 山东省潍坊市农业科学院 | Preparation method of astigmatism heat radiation cooling protection net for agricultural facilities |
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| CN107353472B (en) * | 2015-11-17 | 2019-11-26 | 山东省潍坊市农业科学院 | A kind of agricultural facility astigmatism heat radiation temperature control film and preparation method |
| CN108495547A (en) * | 2016-01-22 | 2018-09-04 | 卢德维格斯文松股份公司 | Screen for hothouse |
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| CN114133648A (en) * | 2021-12-30 | 2022-03-04 | 山东东大塑业有限公司 | Reflection-type diffuse scattering greenhouse film and preparation method thereof |
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