CN212035155U - Breathable heat-preservation mulching film containing chloro-sulfonated natural rubber - Google Patents
Breathable heat-preservation mulching film containing chloro-sulfonated natural rubber Download PDFInfo
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- CN212035155U CN212035155U CN202020204603.4U CN202020204603U CN212035155U CN 212035155 U CN212035155 U CN 212035155U CN 202020204603 U CN202020204603 U CN 202020204603U CN 212035155 U CN212035155 U CN 212035155U
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- chlorosulfonated natural
- mulching film
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- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
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Abstract
The utility model relates to a ventilative heat preservation plastic film that contains chlorine sulfonated natural rubber, including chlorosulfonated natural rubber square layer (1), there is one deck cellulose compound polyacrylate transparent top film layer (2) at chlorosulfonated natural rubber square layer upper surface, evenly distributed beta-eucryptite spherical particle (21) in cellulose compound polyacrylate transparent top film layer, there is one deck cellulose compound polyacrylate transparent bottom film layer (3) at chlorosulfonated rubber square layer lower surface, evenly distributed ventilative micropore (31) in cellulose compound polyacrylate transparent bottom film layer. The pore size on the mulching film can change along with the change of the environmental temperature, so that the air permeability of the mulching film is good at high time at the environmental temperature in the daytime, and the pore size of the mulching film automatically becomes small at low time at night, thereby improving the heat preservation effect of the mulching film in the low-temperature condition of the cold area.
Description
The technical field is as follows:
the utility model relates to a plastic film technical field especially relates to a ventilative heat preservation plastic film that contains chlorine sulfonated natural rubber.
Background art:
the mulching film is a film for covering the ground, and can improve the soil temperature, maintain the soil moisture, improve the soil structure, prevent the crop from being attacked by pests, inhibit crop diseases caused by certain microorganisms in the soil, kill weeds, inhibit salt and protect seedlings, improve near-ground photo-thermal conditions and the like. The mulching film has been proved to increase the yield of more than forty kinds of crops such as grains, cotton, vegetables, melons and fruits by thirty percent to fifty percent. Scientific use of mulching films has become an indispensable application technology for developing seed germination in modern agricultural technologies. The germination of crop seeds needs to control several key environmental conditions such as sunlight, air, moisture, temperature and the like, so that all the environmental conditions are reasonably matched with each other. (1) Seeds of the phototrophic plants need light to germinate, so that after sowing, a certain amount of solar energy is needed to irradiate the soil through the film. (2) Most plant seeds need to breathe at the beginning of germination, and air is needed, so that the mulching film needs to be used in consideration of air permeability, namely, the air can penetrate through the mulching film to enter a space covered by the mulching film, and the air needed by seed germination is ensured. (3) The germination temperature of the plant seeds is at least more than 0 ℃, most of the areas in the north of the Yangtze river of China are cold in winter, and the temperature is more than zero ℃ at night, so that a proper mulching film technology is needed to keep the soil temperature, and conditions are provided for continuously carrying out agricultural production operations such as seed germination in cold winter. The traditional mulching film is mainly made of a high-molecular transparent film material made of polyethylene or polyvinyl chloride, when the mulching film is used, the polyethylene or polyvinyl chloride transparent film material needs to be laid in a whole piece and covered above soil to form a closed space, sunlight penetrates through the transparent film to radiate and heat gas in the closed space, and the heated gas heats the soil covered by the mulching film, so that the heat preservation effect of the mulching film is achieved. However, the closed space formed by the air permeability of the traditional polymer mulching film is not beneficial to the respiration of crops, and although in actual operation, farmers have to open some ventilation holes on the traditional mulching film for ventilation, the open holes form a contradiction between ventilation and mulching film heat preservation, namely the open holes on the mulching film enable air inside and outside the mulching film to circulate, the circulated air can take away heat of the soil covered by the mulching film, and the temperature of the soil in cold winter is difficult to maintain.
The utility model has the following contents:
the utility model discloses a solve technical problem and provide a chlorine sulfonated natural rubber's of simple structure ventilative heat preservation plastic film, the hole size on this plastic film can change along with ambient temperature's change to realize that ambient temperature is good at high time membrane gas permeability daytime, the membrane hole gap is automatic to diminish when the night temperature is low, thereby improves the heat preservation effect of plastic film under the cold area low temperature condition.
The utility model provides a technical scheme that technical problem adopted is: the utility model provides a ventilative heat preservation plastic film of chlorosulfonated natural rubber, includes chlorosulfonated natural rubber square layer (1), its characterized in that, chlorosulfonated natural rubber square layer is by a plurality of chlorosulfonated natural rubber frame strips (11) through a plurality of square check (12) that plane cross formed, there is a layer cellulose complex polyacrylate transparent surface film layer (2) on chlorosulfonated natural rubber square layer upper surface, evenly distributed beta-eucryptite spherical particle (21) in cellulose complex polyacrylate transparent surface film layer, there is a layer cellulose complex polyacrylate transparent basement membrane layer (3) on chlorosulfonated natural rubber square layer lower surface, evenly distributed ventilative micropore (31) in cellulose complex polyacrylate transparent basement membrane layer.
The width of the chlorosulfonated natural rubber frame strip (11) is 1-5 cm.
The side length of the square grid (12) is 10-50 cm.
The thickness of the cellulose composite polyacrylate transparent surface film layer (2) is 0.2-1.0 cm.
The spherical diameter of the beta-eucryptite spherical particles (21) is 0.2-1.0 cm.
The beta-eucryptite spherical particles (21) have a particle distribution number density of 5-20/m in the cellulose composite polyacrylate transparent surface film layer (2)2。
The thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 0.1-1.0 cm.
The pore diameter of the air-permeable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 0.1-1.5 cm.
The distance between every two adjacent breathable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer is 5-30 cm.
By adopting the technical scheme, the breathable heat-preservation mulching film containing chlorosulfonated natural rubber comprises a chlorosulfonated natural rubber grid layer (1) formed by crossing chlorosulfonated natural rubber frame strips (11) in a plane cross manner, wherein the chlorosulfonated natural rubber is a natural rubber derivative obtained by chlorination and sulfonation reactions of natural rubber, and the natural rubber derivative has good corrosion resistance, weather resistance and excellent mechanical property, so that the grid layer formed by crossing the frame strips made of the chlorosulfonated natural rubber has a supporting function similar to a keel, and provides powerful mechanical support for a soft cellulose composite polyacrylate transparent surface film layer and a bottom film layer.
The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber contains a cellulose composite polyacrylate transparent surface film layer (2), and the cellulose composite polyacrylate transparent surface film layer is formed by compounding cellulose extracted from natural plants and polyacrylate. The cellulose is degradable natural plant polymer, and the cellulose membrane has high strength, is transparent and has good light transmittance; the polyacrylate is a homopolymer or a copolymer of acrylate monomers, can form a film material with good gloss and strong water resistance, and is flexible and elastic at room temperature and good in weather resistance. Traditional polyethylene or polyvinyl chloride mulching films are made of hydrophobic high polymer materials, and dense water drops are easily accumulated on the surfaces of the traditional mulching films, so that the permeability of the mulching films to sunlight is seriously influenced. And the utility model discloses a compound polyacrylate rete of cellulose (including surface film layer and basement membrane layer) is made by the hydrophilicity polymer, therefore the rete surface has fine hydrophilicity, and this kind of hydrophilicity rete surface is difficult for forming intensive drop of water, has correspondingly improved the sunlight permeability of plastic film. The cellulose composite polyacrylate transparent film layer has good elasticity, is not easy to be easily burst by weeds and shrubs, can better maintain the integrity of the mulching film, and can ensure that the mulching film can well protect covered crops.
Beta-eucryptite spherical particles (21) are embedded in the cellulose composite polyacrylate transparent surface film layer, the beta-eucryptite has a quartz-like structure, and the molecular formula of the beta-LiAISiO4Al in the structure3+Replacing half of the Si in quartz4+And adding Li+And carrying out charge compensation. Beta-eucryptite is a material with negative thermal expansibility, namely the beta-eucryptite shrinks in volume when the temperature rises, expands in volume when the temperature falls, and the negative thermal expansibility of the beta-eucryptite occurs at normal temperature. The utility model discloses well beta-eucryptite spherical particle (21) distribute in the compound polyacrylate transparent surface rete of cellulose, there is sunshine to penetrate directly daytime, especially at noon time, sunshine penetrates directly on the plastic film surface, beta-eucryptite spherical particle in the rete penetrates directly under sunshine, self temperature rises after absorbing the solar radiation energy, beta-eucryptite spherical particle's volume can certain degree shrink this moment, this kind of shrink has produced certain hole between the polymer substrate in spherical particle and the rete, the production in this kind of hole makes the gaseous and the extramembranous gaseous exchange of space under the plastic film mulching, make the plastic film produce ventilative effect. Due to the direct sunlight in the daytime, the temperature of the air outside the mulching film is not so low, so that the temperature of the soil is not lowered when the air outside the mulching film is exchanged into the mulching film covering space. Under night conditions without sunlight, the temperature of the environment drops,the temperature of the soil is also reduced, and the volume of the beta-eucryptite spherical particles in the surface film layer can expand along with the reduction of the temperature, so that the pores between the spherical particles and the polymer base material of the surface film layer are reduced or closed, so that outside cold air can not enter a space covered by the mulching film, the cooling speed of the soil at night is further reduced, and the heat preservation effect of the mulching film is achieved. Therefore, the cellulose composite acrylate transparent surface film layer is embedded with the beta-eucryptite spherical particles (21), so that the sizes of the pores between the spherical particles and the surface film layer high polymer base material can be adjusted according to the ambient temperature and the sunlight irradiation degree, and the air permeability and the heat insulation performance of the mulching film are correspondingly adjusted.
The utility model discloses there is the cellulose complex polyacrylate transparent basement membrane layer (3) that the one deck is distributing ventilative micropore (31) at chlorosulfonated rubber square layer lower surface, this kind of cellulose complex polyacrylate transparent basement membrane layer has better mechanical properties and elasticity, this makes basement membrane layer be difficult to be broken easily by weeds and shrub branches and the like that grow up, do not imbed beta-lithia stone spherical particle in basement membrane layer, but only ventilative micropore, this kind of ventilative micropore's effect is exactly that the air that permeates into with the surface film layer can directly carry out the material exchange with the gas in plastic film covered space.
The beneficial effects of the utility model are that the utility model relates to a ventilative heat preservation plastic film of chlorine-containing sulfonated natural rubber has the degree of illumination that can follow ambient temperature and sunlight, and the pore size of automatically regulated surface film layer, membrane surface pore grow when the temperature is high daytime, therefore can produce good gas permeability, and when the temperature was low night, the pore on plastic film surface was closed or was dwindled, and the temperature that makes the plastic film cover soil can not reduce is too fast to play the heat preservation effect. The utility model discloses a simple structure, the light transmissivity is good, elasticity is good, derive from the chlorosulfonated natural rubber frame strip of natural rubber and the cellulose component in the rete can degrade in natural environment, compares with the plastic film that the tradition is difficult for degrading, has reduced the adverse effect of traditional plastic film to the environment.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a breathable heat-preservation mulching film containing chlorosulfonated natural rubber.
FIG. 2 is a schematic structural diagram of a chlorosulfonated natural rubber lattice layer.
FIG. 3 is a schematic structural diagram of a cellulose compounded polyacrylate transparent mask layer.
Fig. 4 is a schematic structural view of a cellulose compounded polyacrylate transparent primer layer.
In the figure: (1) chlorosulfonated natural rubber lattices; (11) chlorosulfonated natural rubber frame strips; (12) square grids; (2) a cellulose composite acrylate transparent mask layer; (21) beta-eucryptite spherical particles; (3) a cellulose composite acrylate transparent primer layer; (31) and (4) ventilating micropores.
Detailed Description
Example 1
Referring to the attached drawing, the breathable heat-preservation mulching film containing the chlorosulfonated natural rubber comprises a chlorosulfonated natural rubber square layer (1), and is characterized in that the chlorosulfonated natural rubber square layer is a plurality of square grids (12) formed by crossing a plurality of chlorosulfonated natural rubber frame strips (11) through plane cross, a cellulose composite polyacrylate transparent surface film layer (2) is arranged on the upper surface of the chlorosulfonated natural rubber square layer, beta-eucryptite spherical particles (21) are uniformly distributed in the cellulose composite polyacrylate transparent surface film layer, a cellulose composite polyacrylate transparent bottom film layer (3) is arranged on the lower surface of the chlorosulfonated natural rubber square layer, and breathable micropores (31) are uniformly distributed in the cellulose composite polyacrylate transparent bottom film layer. The width of the chlorosulfonated natural rubber frame strip (11) is 1 cm. The side lengths of the square grids (12) are respectively 10 cm and 45 cm. The thickness of the cellulose composite polyacrylate transparent mask layer (2) is 0.2 cm. The spherical diameter of the beta-eucryptite spherical particles (21) is 0.2 cm. The distribution number density of the beta-eucryptite spherical particles (21) in the cellulose composite polyacrylate transparent surface film layer (2) is 20/m2. The thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 0.1 cm. The pore diameter of the air-permeable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 1.5 cm. The cellulose composite polyacrylate is transparentThe distance between adjacent air-permeable micropores (31) in the bottom film layer is 30 cm.
Example 2
Referring to the attached drawing, the breathable heat-preservation mulching film containing the chlorosulfonated natural rubber comprises a chlorosulfonated natural rubber square layer (1), and is characterized in that the chlorosulfonated natural rubber square layer is a plurality of square grids (12) formed by crossing a plurality of chlorosulfonated natural rubber frame strips (11) through plane cross, a cellulose composite polyacrylate transparent surface film layer (2) is arranged on the upper surface of the chlorosulfonated natural rubber square layer, beta-eucryptite spherical particles (21) are uniformly distributed in the cellulose composite polyacrylate transparent surface film layer, a cellulose composite polyacrylate transparent bottom film layer (3) is arranged on the lower surface of the chlorosulfonated natural rubber square layer, and breathable micropores (31) are uniformly distributed in the cellulose composite polyacrylate transparent bottom film layer. The width of the chlorosulfonated natural rubber frame strip (11) is 1.6 cm. The side lengths of the square grids (12) are respectively 15 cm and 50 cm. The thickness of the cellulose composite polyacrylate transparent mask layer (2) is 0.5 cm. The spherical diameter of the beta-eucryptite spherical particles (21) is 0.5 cm. The distribution number density of the beta-eucryptite spherical particles (21) in the cellulose composite polyacrylate transparent surface film layer (2) is 15/m2. The thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 0.4 cm. The pore diameter of the air-permeable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 1.1 cm. The distance between every two adjacent air-permeable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer is 22 cm.
Example 3
Referring to the attached drawing, the breathable heat-preservation mulching film containing chlorosulfonated natural rubber comprises a chlorosulfonated natural rubber square layer (1), and is characterized in that the chlorosulfonated natural rubber square layer is a plurality of square grids (12) formed by crossing a plurality of chlorosulfonated natural rubber frame strips (11) through plane cross, a cellulose composite polyacrylate transparent surface film layer (2) is arranged on the upper surface of the chlorosulfonated natural rubber square layer, beta-eucryptite spherical particles (21) are uniformly distributed in the cellulose composite polyacrylate transparent surface film layer, and a cellulose composite polypropylene oxide layer is arranged on the lower surface of the chlorosulfonated natural rubber square layerThe acrylic acid ester transparent bottom film layer (3) is uniformly distributed with air-permeable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer. The width of the chlorosulfonated natural rubber frame strip (11) is 3.3 cm. The side lengths of the square grids (12) are all 25 cm. The thickness of the cellulose composite polyacrylate transparent mask layer (2) is 0.8 cm. The spherical diameter of the beta-eucryptite spherical particles (21) is 0.8 cm. The distribution number density of the beta-eucryptite spherical particles (21) in the cellulose composite polyacrylate transparent surface film layer (2) is 10/m2. The thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 0.7 cm. The pore diameter of the air-permeable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 0.6 cm. The distance between the adjacent air-permeable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer is 13 cm.
Example 4
Referring to the attached drawing, the breathable heat-preservation mulching film containing the chlorosulfonated natural rubber comprises a chlorosulfonated natural rubber square layer (1), and is characterized in that the chlorosulfonated natural rubber square layer is a plurality of square grids (12) formed by crossing a plurality of chlorosulfonated natural rubber frame strips (11) through plane cross, a cellulose composite polyacrylate transparent surface film layer (2) is arranged on the upper surface of the chlorosulfonated natural rubber square layer, beta-eucryptite spherical particles (21) are uniformly distributed in the cellulose composite polyacrylate transparent surface film layer, a cellulose composite polyacrylate transparent bottom film layer (3) is arranged on the lower surface of the chlorosulfonated natural rubber square layer, and breathable micropores (31) are uniformly distributed in the cellulose composite polyacrylate transparent bottom film layer. The width of the chlorosulfonated natural rubber frame strip (11) is 5 cm. The side lengths of the square grids (12) are respectively 15 cm and 50 cm. The thickness of the cellulose composite polyacrylate transparent mask layer (2) is 1.0 cm. The spherical diameter of the beta-eucryptite spherical particles (21) is 1.0 cm. The distribution number density of the beta-eucryptite spherical particles (21) in the cellulose composite polyacrylate transparent surface film layer (2) is 5/m2. The thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 1.0 cm. The pore diameter of the air-permeable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 0.1cm. The distance between the adjacent air-permeable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer is 5 cm.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a ventilative heat preservation plastic film of chlorosulfonated natural rubber, includes chlorosulfonated natural rubber square layer (1), its characterized in that, chlorosulfonated natural rubber square layer is by a plurality of chlorosulfonated natural rubber frame strips (11) through a plurality of square check (12) that plane cross formed, there is a layer cellulose complex polyacrylate transparent surface film layer (2) on chlorosulfonated natural rubber square layer upper surface, evenly distributed beta-eucryptite spherical particle (21) in cellulose complex polyacrylate transparent surface film layer, there is a layer cellulose complex polyacrylate transparent basement membrane layer (3) on chlorosulfonated natural rubber square layer lower surface, evenly distributed ventilative micropore (31) in cellulose complex polyacrylate transparent basement membrane layer.
2. The breathable heat-preservation mulching film containing chlorosulfonated natural rubber according to claim 1, wherein the width of the chlorosulfonated natural rubber frame strips (11) is 1-5 cm.
3. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber as claimed in claim 1, wherein the side length of the square grid (12) is 10-50 cm.
4. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber as claimed in claim 1, wherein the thickness of the cellulose composite polyacrylate transparent surface film layer (2) is 0.2-1.0 cm.
5. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber according to claim 1, wherein the spherical diameter of the β -eucryptite spherical particles (21) is 0.2-1.0 cm.
6. The breathable heat-preservation mulching film containing chlorosulfonated natural rubber according to claim 1, wherein the grain distribution number density of the beta-eucryptite spherical grains (21) in the cellulose composite polyacrylate transparent surface film layer (2) is 5-20/m2。
7. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber as claimed in claim 1, wherein the thickness of the cellulose composite polyacrylate transparent bottom film layer (3) is 0.1-1.0 cm.
8. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber as claimed in claim 1, wherein the pore diameter of the breathable micropores (31) distributed in the cellulose composite polyacrylate transparent bottom film layer is 0.1-1.5 cm.
9. The breathable heat-preservation mulching film containing the chlorosulfonated natural rubber as claimed in claim 1, wherein a distance between adjacent breathable micropores (31) in the cellulose composite polyacrylate transparent bottom film layer is 5-30 cm.
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| CN202020204603.4U CN212035155U (en) | 2020-02-25 | 2020-02-25 | Breathable heat-preservation mulching film containing chloro-sulfonated natural rubber |
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| CN202020204603.4U CN212035155U (en) | 2020-02-25 | 2020-02-25 | Breathable heat-preservation mulching film containing chloro-sulfonated natural rubber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112806199A (en) * | 2021-02-02 | 2021-05-18 | 南京林业大学 | Breathable water-drop-free mulching film and preparation method thereof |
| CN114561033A (en) * | 2022-02-22 | 2022-05-31 | 南京林业大学 | Garlic extract based insect-resistant mulching film and preparation method thereof |
-
2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112806199A (en) * | 2021-02-02 | 2021-05-18 | 南京林业大学 | Breathable water-drop-free mulching film and preparation method thereof |
| CN114982536A (en) * | 2021-02-02 | 2022-09-02 | 南京林业大学 | Preparation method of breathable water-drop-free mulching film based on temperature-adjustable air exchange layer |
| CN114982536B (en) * | 2021-02-02 | 2023-05-09 | 南京林业大学 | Preparation method of breathable water-drop-free mulching film based on temperature-adjustable air exchange layer |
| CN114561033A (en) * | 2022-02-22 | 2022-05-31 | 南京林业大学 | Garlic extract based insect-resistant mulching film and preparation method thereof |
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