CN214430628U - Double-layer reflective breathable mulching film - Google Patents
Double-layer reflective breathable mulching film Download PDFInfo
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- CN214430628U CN214430628U CN202022998641.4U CN202022998641U CN214430628U CN 214430628 U CN214430628 U CN 214430628U CN 202022998641 U CN202022998641 U CN 202022998641U CN 214430628 U CN214430628 U CN 214430628U
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Abstract
The utility model provides a double-layer reflective breathable mulching film, which comprises a reflective layer, a breathable layer and air holes, wherein inorganic porous particles are dispersed on the reflective layer and the breathable layer, and at least part of the inorganic porous particles penetrate through the reflective layer and the breathable layer; the air holes include micropores of inorganic porous particles and interface holes between the inorganic porous particles and the reflective layer or the air-permeable layer. The problems of overhigh soil temperature and overhigh humidity caused by film covering are reduced by the ventilation effect of the inorganic porous particles in the film body.
Description
Technical Field
The utility model belongs to agricultural cover membrane field, concretely relates to double-deck ventilative plastic film of reflection.
Background
Photosynthesis of crops is greatly influenced by illumination, and the lack of illumination can cause the problems of yield reduction, quality reduction and the like of the crops. Through the use of the reflection plastic film, the illumination area of the leaves is increased, and the photosynthesis efficiency is improved. Meanwhile, the reflective mulching film can reduce the generation of crop diseases.
The traditional reflective mulching film achieves the purpose of reflecting light by coating a reflective coating on the surface of a resin film, but the conventional reflective mulching film is lack of holes required by air circulation, so that the problems of overhigh soil temperature, overhigh humidity and the like are easily caused. In the prior art, the ventilation property is usually realized by adopting a method of puncturing during mulching film laying, but the method can reduce the tension of the mulching film, reduce the porosity between layers after the mulching film is coated, and influence the efficient utilization of soil water and heat resources.
Based on the above problems, there is a need for a reflective breathable mulching film with holes in advance, which can solve the problems of excessive temperature and humidity of soil caused by ground covering.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double-deck ventilative plastic film that reflects, through the ventilation action of the inorganic porous particle of the internal portion of membrane, reduce the too high, the too high problem of humidity of soil temperature that causes because of the tectorial membrane.
In order to achieve the purpose, the utility model provides a double-layer reflective breathable mulching film, which comprises a reflective layer, a breathable layer and a breathable hole, wherein inorganic porous particles are dispersed on the reflective layer and the breathable layer, and at least part of the inorganic porous particles penetrate through the reflective layer and the breathable layer; the air-permeable holes include micropores of inorganic porous particles and interface holes between the inorganic porous particles and the reflective layer and/or the air-permeable layer.
Preferably, the continuous phase of the reflective layer and the breathable layer are both resin layers.
Preferably, the material of the resin layer is one or a combination of polyethylene, polyvinyl chloride, polyethylene terephthalate and polypropylene.
Further preferably, the continuous phase materials of the reflective layer and the breathable layer are the same.
Preferably, the micropores of the inorganic porous particles account for 30-50% of the total amount of the air holes.
Preferably, the inorganic porous particles have a pore size of 20nm to 3 μm.
Preferably, the inorganic porous particles have a specific surface area of 10 to 1000m2/g。
Preferably, the size of the interfacial pores between the inorganic porous particles and the reflective layer and/or the air-permeable layer is 10nm to 1000 nm.
Preferably, the inorganic porous particles account for 5-50% of the total mass of the double-layer reflective breathable mulching film.
More preferably, the inorganic porous particles account for 10-30% of the total mass of the double-layer reflective breathable mulching film.
Preferably, the inorganic porous particles include first inorganic porous particles and second inorganic porous particles, and the first inorganic porous particles penetrate the reflective layer and the gas-permeable layer.
The first inorganic porous particles will be referred to as "through-type porous particles" hereinafter, and the second inorganic porous particles will be referred to as "non-through-type porous particles".
Preferably, the first inorganic porous particles have a particle size ranging from 10 to 1000 μm.
Preferably, the second inorganic porous particles have a particle size ranging from 5 to 800 μm.
Preferably, the first inorganic porous particles account for 5 to 50% of the total mass of the inorganic porous particles.
Preferably, the thickness of the double-layer reflective breathable mulching film is 10-1000 microns.
Preferably, the thickness of the reflecting layer is 3-800 μm; more preferably, the thickness of the reflecting layer is 5 to 500 μm.
Preferably, the thickness of the air-permeable layer is 3-800 μm; more preferably, the thickness of the air-permeable layer is 5 to 500 μm.
Preferably, the first inorganic porous particles have a particle diameter not smaller than the sum of thicknesses of the reflective layer and the air-permeable layer.
Preferably, the reflective layer is a resin layer in which reflective particles are dispersed. The reflective particles are materials which can reflect incident light of visible light within the wavelength range of 0.4-0.7 μm and enable the light, the reflected light, the incident light and the normal to be in the same plane.
Further preferably, the reflective particles are at least one of aluminum, copper, silver, zinc, and gold particles.
Preferably, the inorganic porous particles are at least one of porous kaolin, porous diatomite, porous sepiolite, porous talcum powder, porous alumina, porous zinc oxide, porous hydrotalcite, porous barium sulfate, porous tourmaline, porous magnesium oxide and porous titanium dioxide.
Preferably, the first inorganic porous particles are at least one of porous kaolin, porous diatomaceous earth and porous sepiolite.
Preferably, the reflective layer further has an ultraviolet absorber dispersed therein. The ultraviolet absorbent is a substance capable of absorbing ultraviolet rays with the wavelength range of 10-400 nm.
Preferably, the ultraviolet absorber is 2- (2 ' -hydroxy-5 ' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole, resorcinol monobenzoate, 2, 2 '-thiobis (4-tert-octylphenoloxy) nickel, 4-benzoyloxy-2, 2, 6, 6-tetramethylpiperidine, 2,4, 6-tris (2' n-butoxyphenyl) -1, 3, 5-triazine, hexamethylphosphoric triamide, tin oxide, titanium dioxide.
Preferably, the ultraviolet absorbent accounts for 0.01-5% of the total mass of the double-layer reflective breathable mulching film.
Preferably, an anti-aging agent is dispersed in the reflecting layer and the breathable layer. The anti-aging agent is a substance which can be combined with free radicals generated by resin molecules due to oxidation, illumination and heating, so that the transfer of the free radicals is stopped, and the aging is stopped.
Preferably, the anti-aging agent accounts for 0.01-5% of the total mass of the double-layer reflective breathable mulching film.
Preferably, the reflective breathable film is prepared by tape casting or blow molding.
The utility model also provides a curtain coating forming method of double-deck reflection ventilative plastic film, including following step:
(1) mixing and feeding: weighing 50-95 wt% of resin particles, 0-50 wt% of inorganic porous particles and 0.01-5 wt% of anti-aging agent, mixing, and putting into a first extruder; weighing 50-95 wt% of resin particles, 1-20 wt% of reflective particles, 0.01-5 wt% of anti-aging agent and 0-50 wt% of inorganic porous particles, mixing, and feeding into a second extruder; wherein the inorganic porous particles account for 5-50% of the total weight of the material;
(2) melt co-extrusion: the temperature of five temperature zones of the two extruders is set to be 90-260 ℃, 100-260 ℃, 110-260 ℃, 150-260 ℃, 170-260 ℃, the screw rotation speed is 10-260 r/min, the die head temperature is 120-260 ℃, the extrusion is carried out, and the melt of the first extruder and the melt of the second extruder enter a casting machine through laminar flow distribution;
(3) tape casting: setting the rotating speed of the screw to be 10-50 r/min, setting the traction speed to be 1-50 m/min, and setting the cooling temperature to be 3-40 ℃ for tape casting;
(4) traction and winding: and cutting the formed film, carrying out corona treatment, and then carrying out traction and rolling to obtain a double-layer reflective breathable mulching film product.
When the tape casting is carried out in the step (3), the film in a molten state is extruded, the thickness is reduced, and when the thickness of the film does not exceed the diameter of the inorganic porous particles, the inorganic porous particles penetrate through the film.
Preferably, the resin particles in step (1) are at least one of polyethylene, polyvinyl chloride, polyethylene terephthalate and polypropylene particles.
Preferably, in the case where the inorganic porous particles are all through-type porous particles in the step (1), the inorganic porous particles may be fed only into the first extruder or the second extruder and mixed, or may be fed into two extruders and mixed.
Preferably, when the inorganic porous particles in the step (1) include a through type and a non-through type, the inorganic porous particles are fed into the first extruder or the second extruder at a certain ratio and mixed.
The utility model also provides a blow molding method of double-deck reflection ventilative plastic film, including following step:
(A) mixing and feeding: weighing 50-95 wt% of resin particles and 0-50 wt% of inorganic porous particles, mixing, and putting into a first extruder; weighing 50-95 wt% of resin particles, 1-20 wt% of reflective particles and 0-50 wt% of inorganic porous particles, mixing, and putting into a second extruder; wherein the inorganic porous particles account for 5-50% of the total weight of the material;
(B) melt co-extrusion: the temperature of five temperature zones of the first extruder and the second extruder is set to be 90-260 ℃, 100-260 ℃, 110-260 ℃, 150-260 ℃, 170-260 ℃, the screw rotation speed is 10-260 r/min, the temperature of a die head is 120-260 ℃, and the melt extruded by the first extruder and the second extruder enters a blow molding machine through laminar flow distribution;
(C) blow molding: setting the blow-up ratio to be 2-4; setting the traction ratio to be 2-8 for blow molding;
(D) cooling and drawing: cooling the blown film at 20-30 ℃ by an air ring, then feeding the film into a traction roller through a herringbone clamping plate for traction, and simultaneously slitting;
(E) and (3) post-treatment: and carrying out corona treatment, inspection and packaging on the cut film to obtain a double-layer reflective breathable mulching film product.
Preferably, the resin particles in step (1) are at least one of polyethylene, polyvinyl chloride, polyethylene terephthalate and polypropylene particles.
Preferably, the step (1) and the step (F) further comprise weighing 0.01-5 wt% of an ultraviolet absorbent, 50-95 wt% of resin particles, 1-20 wt% of reflective particles, 0.01-5 wt% of an anti-aging agent and 0-50 wt% of inorganic porous particles, mixing, and feeding into a second extruder.
Preferably, the inorganic porous particles in the steps (1) and (F) include first inorganic porous particles and second inorganic porous particles, and the first inorganic porous particles account for 5 to 50% of the total mass of the inorganic porous particles.
More preferably, the first inorganic porous particles have a particle size of 10 to 100 μm.
Preferably, when the resin particles are polyethylene, the temperature of the five temperature zones of the first extruder and the second extruder in the step (2) is set to 160-180 ℃, 170-190 ℃, 170-200 ℃, 180-190 ℃ and 180-200 ℃.
Preferably, when the resin particles are polyvinyl chloride, the temperature of the five temperature zones of the first extruder and the second extruder in the step (2) is set to be 140-180 ℃, 150-180 ℃, 160-200 ℃, 160-190 ℃ and 160-200 ℃.
Preferably, when the resin particles are polyethylene terephthalate, the five temperature zones of the first extruder and the second extruder in the step (2) are set to be 190-240 ℃, 200-250 ℃ and 200-260 ℃.
Preferably, when the resin particles are polypropylene, the temperature of the five temperature zones of the first extruder and the second extruder in the step (2) is set to be 150-180 ℃, 160-190 ℃, 160-200 ℃ and 160-210 ℃.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses an add reflective particles at the reflector layer, can improve the illumination intensity that crops received with the light reflection to the crops blade back that shines to ground to improve photosynthesis efficiency, make crops increase production, improve crops product quality.
2. The utility model discloses the back is laid to double-deck ventilative reflection plastic film, owing to increased the illumination intensity that the plant leaf back receives, can effectively drive the crops pest, improves crops output and quality.
3. The utility model discloses an add inorganic porous particle in double-deck plastic film, make the air of plastic film upper and lower surface can circulate through the bleeder vent to reduce the heat dissipation that causes by the cover not good, pass through wet not good scheduling problem, reduce soil temperature and humidity.
4. The utility model discloses an add inorganic porous particle and provide multiple circulation of air passageway for the plastic film, including the micropore passageway that the porous particle of through type provided, the porous particle of through type and interface hole passageway, the inorganic porous particle of non-through type between reflection stratum and the ventilative layer formed the joint passageway, interface hole joint passageway and interface hole and the micropore of porous particle formed the joint passageway etc. the circulation of air passageway is diversified, makes the utility model discloses a double-deck plastic film has good gas permeability.
5. The utility model provides an air circulation passageway has the randomness of shape irregularity and distribution, has both guaranteed the gas permeability of plastic film, can not occupy reflection of light area like the acupuncture hole again to increased the reflection of light area and the reflection of light efficiency of plastic film, provided more sufficient illumination intensity for crops.
Drawings
Fig. 1 is a schematic structural view of a double-layer reflective breathable mulching film provided by the present invention;
fig. 2 is a schematic structural view of another double-layer reflective breathable mulching film provided by the present invention;
fig. 3 is a flow chart of a tape casting method for a double-layer reflective breathable mulching film provided by the present invention;
fig. 4 is a flow chart of a blow molding method of the double-layer reflective breathable mulching film provided by the present invention.
Detailed Description
In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Example 1
A double-layer reflective breathable mulching film 1 is shown in figure 1 and comprises a reflective layer 11, a breathable layer 12 and a breathable hole 13, wherein the thickness of the reflective layer 11 is 50 microns, the thickness of the breathable layer 12 is 50 microns, and the size of the breathable hole 13 is 10 nm-1 micron. Wherein, the reflection layer 11 and the ventilation layer 12 are both dispersed with an anti-aging agent of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxyhydrocinnamate), an ultraviolet absorbent of 2-hydroxy-4-n-octoxybenzophenone, and porous diatomite 14, the average particle size of the porous diatomite is 100 μm, the pore diameter is 200-600 nm, and the pore volume is 0.6-0.8 cm3(ii) in terms of/g. The porous diatomite 14 penetrates through the reflecting layer 11 and the breathable layer 12, and the specific surface area of the porous diatomite 14 is 60-100 m2(ii)/g; the air holes 13 comprise micropores 131 of the porous diatomite 14 and interface holes 132 between the porous diatomite 14 and the reflecting layer 11 and/or the air-permeable layer 12, and the size distribution of the interface holes 132 is 10 nm-1 μm; and the continuous phase materials of the reflecting layer and the breathable layer are all polyvinyl chloride.
The reflecting layer 11 is also dispersed with aluminum reflecting particles 15, and the particle size range of the aluminum reflecting particles 15 is 1-10 μm.
As shown in fig. 1, the mulching film 1 provides two types of air flow passages, namely a passage T1 formed by micropores of the porous diatomite 14 and a passage T2 formed by the micropores of the porous diatomite 14 and an interface hole between the reflective layer 11 and the air-permeable layer 12.
As shown in fig. 1, the reflective layer 11 of the mulching film 1 has the aluminum reflective particles 15 uniformly dispersed therein, so that the reflective area and the reflective efficiency of the mulching film are increased, and sufficient illumination intensity is provided for crops. The light reflection path is shown by arrow R1.
Measuring the reflectivity of the reflective breathable mulching film 1 by using an ultraviolet-visible spectrophotometer, wherein the reflectivity reaches 27%; according to the test method required by GB/T1038-3/(m224h 0.1MPa), and the air permeability coefficient reaches 1.19E-17 (cm)3·cm/m2·h·0.1MPa)。
In other preferred embodiments, the continuous phase material of the reflective layer and the air-permeable layer may also be different, such as polyvinyl chloride for the reflective layer and polyethylene terephthalate for the air-permeable layer. The same or different resin materials can be selected as the continuous phase component according to actual needs.
Example 2
A double-layer reflective breathable mulching film 2 comprises a reflective layer 21, a breathable layer 22 and a breathable hole 23, wherein the reflective layer 21 is 100 microns thick, the breathable layer 22 is 100 microns thick, and the size of the breathable hole 23 is 10-30 microns. Wherein, the reflecting layer 21 and the air permeable layer 22 are both dispersed with pentaerythritol tetra (3, 5-di-tert-butyl-4-hydroxyhydrocinnamate) ester as an anti-aging agent, 2-hydroxy-4-n-octoxybenzophenone as an ultraviolet absorbent and porous kaolin 24, the porous kaolin 24 comprises a through porous kaolin 241 with the average particle size of 200 μm and a non-through porous kaolin 242 with the average particle size of 100 μm, wherein the pore diameter of the porous kaolin 241 is 300-500 nm, and the specific surface area is 150-200 m2The pore diameter of the porous kaolin 242 is 200-300 nm, and the specific surface area is 200-300 m2(ii)/g; the air holes 23 comprise micropores 2411 of the porous kaolin 24 and interface holes 2422 between the porous kaolin 24 and the reflecting layer 21 and/or the air permeable layer 22, and the size distribution of the interface holes 2422 is 10 nm-20 μm; the continuous phase materials of the reflecting layer and the breathable layer are bothPolypropylene.
The reflecting layer 21 also has zinc reflecting particles 25 dispersed therein, the particle size range being 1 to 10 μm.
As shown in fig. 2, the mulching film 2 provides two types of air flow passages, one is a passage T3 formed by micropores of the porous kaolin 24, and the other is a passage T4 formed by the interface holes between the porous kaolin 24 and the reflective layer 21 and the air-permeable layer 22.
As shown in fig. 2, the zinc reflective particles 25 are uniformly dispersed in the reflective layer 21 of the mulching film 2, so that the reflective area and the reflective efficiency of the mulching film are increased, and sufficient illumination intensity is provided for crops. The light reflection path is shown by arrow R2.
Measuring the reflectivity of the reflective breathable mulching film 2 by using an ultraviolet-visible spectrophotometer, wherein the reflectivity reaches 25%; the air permeability of the mulching film 2 is tested according to the test method required by GB/T1038-3/(m224h 0.1MPa), and the air permeability coefficient reaches 1.16E-17 (cm)3·cm/m2·h·0.1MPa)。
Example 3
A tape casting method of a double-layer reflecting breathable mulching film 3 is shown in figure 3 and comprises the following steps:
(1) mixing and feeding: weighing 8kg of polyethylene resin particles and 1.5kg of polyethylene resin particles with the particle size of 100-200 mu m and the specific surface area of 80-120 m2Mixing porous sepiolite particles per gram, 0.25kg of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxyhydrocinnamate) as an anti-aging agent, and 0.25kg of 2-hydroxy-4-methoxybenzophenone as an ultraviolet absorber, and feeding the mixture into a first extruder; weighing 7kg of polyethylene resin particles, 0.5kg of aluminum reflective particles with the particle size of 1-20 microns, 0.25kg of anti-aging agent, 0.25kg of ultraviolet absorbent, 2kg of polyethylene resin particles with the particle size of 50-100 microns and the specific surface area of 50-80 m2Mixing porous sepiolite per gram, and putting the mixture into a second extruder;
(2) melt co-extrusion: the temperature of five temperature zones of the two extruders is set to be 170 ℃, 180 ℃, 190 ℃, the rotating speed of a screw is set to be 100r/min, the temperature of a die head is 180 ℃ for extrusion; the melt extruded by the first extruder and the second extruder enters a casting machine through laminar flow distribution;
(4) tape casting: setting the rotating speed of the screw to be 50r/min, setting the traction speed to be 30m/min, setting the cooling temperature to be 30 ℃, and carrying out tape casting;
(5) traction and winding: cutting the formed film, carrying out corona treatment, and then carrying out traction and rolling to obtain a double-layer reflective breathable mulching film 3 with the thickness of 200 mu m; wherein the thickness of the reflecting layer is 100 μm, and the thickness of the air-permeable layer is 100 μm.
Measuring the reflectivity of the reflective breathable mulching film 3 by using an ultraviolet-visible spectrophotometer, wherein the reflectivity reaches 26%; the air permeability of the mulching film 3 is tested according to the test method required by GB/T1038-3/(m224h 0.1MPa), and the air permeability coefficient reaches 1.20E-17 (cm)3·cm/m2·h·0.1MPa)。
Example 4
A blow molding method of a double-layer reflective breathable mulching film 4 is shown in figure 4 and comprises the following steps:
(A) mixing and feeding: weighing 8kg of polyethylene resin particles, wherein 2kg of polyethylene resin particles have an average particle size of 400 mu m and a specific surface area of 40-80 m2Mixing 0.2kg of tris (2, 4-di-tert-butylphenyl) phosphite serving as an anti-aging agent and 0.2kg of 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole serving as an ultraviolet absorber per gram of porous sepiolite and the mixture, and then feeding the mixture into a first extruder; weighing 8kg of polyethylene particles, 0.16kg of zinc particles with the diameter of 3-100 mu m as reflecting particles, 0.12kg of 5-tert-butyl-4-hydroxy-2-methylphenylsulfanyl ether as an anti-aging agent and 0.16kg of an ultraviolet absorbent, mixing, and feeding into a second extruder.
(B) Melt co-extrusion: the temperature of five temperature zones of the first extruder and the second extruder are set as follows: extruding at 160 deg.C, 170 deg.C, 180 deg.C, 190 deg.C, screw rotation speed of 100r/min, and die head temperature of 180 deg.C; the melt extruded by the first extruder and the second extruder enters a blow molding machine through laminar flow distribution.
(C) Inflation/traction: the blow-up ratio was set to 4; the draft ratio was set to 5 for blowing.
(D) And cooling the blown film by an air ring at 20-30 ℃, then feeding the film into a traction roller through a herringbone clamping plate for traction, and simultaneously slitting.
(E) And (3) post-treatment: carrying out corona treatment, inspection and packaging on the cut film to obtain a double-layer reflective breathable mulching film 4 with the thickness of 400 mu m; wherein the thickness of the reflecting layer is 200 μm, and the thickness of the air-permeable layer is 200 μm.
Measuring the reflectivity of the reflective breathable mulching film 4 by using an ultraviolet-visible spectrophotometer, wherein the reflectivity reaches 28%; according to the test method required by GB/T1038-3/(m224h 0.1MPa), and the air permeability coefficient reaches 1.10E-17 (cm)3·cm/m2·h·0.1MPa)。
It is to be understood that the above examples are illustrative only for the purpose of clarity of description and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (9)
1. A double-layer reflective breathable mulching film comprises a reflective layer, a breathable layer and air holes, and is characterized in that inorganic porous particles are dispersed in the reflective layer and the breathable layer, and at least part of the inorganic porous particles penetrate through the reflective layer and the breathable layer; the air-permeable holes include micropores of inorganic porous particles and interface holes between the inorganic porous particles and the reflective layer and/or the air-permeable layer.
2. The double-layer reflective breathable mulch film according to claim 1, wherein the continuous phase of the reflective layer and the breathable layer are both resin layers.
3. The double-layer reflective breathable mulching film according to claim 2, wherein the resin layer is made of one of polyethylene, polyvinyl chloride, polyethylene terephthalate and polypropylene.
4. The double-layer reflective breathable mulch film according to claim 1, wherein the inorganic porous particles have a pore size of 20nm to 3 μm.
5. The double-layer reflective breathable mulch film of claim 1, wherein the inorganic porous particles comprise first inorganic porous particles and second inorganic porous particles, the first inorganic porous particles penetrating the reflective layer and the breathable layer.
6. The double-layer reflective breathable mulch film according to claim 5, wherein the first inorganic porous particles have a particle size ranging from 10 to 1000 μm; the second inorganic porous particles have a particle size in the range of 5 to 800 μm.
7. The double-layer reflective breathable mulching film according to claim 1, 5 or 6, wherein the inorganic porous particles are one of porous kaolin, porous diatomaceous earth, porous sepiolite, porous talc, porous alumina, porous zinc oxide, porous hydrotalcite, porous barium sulfate, porous tourmaline, porous magnesium oxide and porous titanium dioxide.
8. The double-layer reflective breathable mulch film according to claim 1, wherein the size of the interfacial pores between the inorganic porous particles and the reflective layer and/or the breathable layer is 10nm to 1000 nm.
9. The double-layer reflective breathable mulch film according to claim 1, wherein the thickness of the double-layer reflective breathable mulch film is 10-1000 μm.
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