Novel cherry slow reflection film

Abstract

The invention discloses a novel cherry slow reflection film, which is prepared from the following raw materials: polyethylene, polypropylene, an ethylene-vinyl acetate copolymer, particle titanium dioxide, an ultraviolet stabilizer, chlorine dioxide, a catalyst and a curing agent. The particle titanium dioxide is matched with the polyethylene, the polypropylene and the ethylene-vinyl acetate copolymer, so that the distribution of light entering the greenhouse can be changed, the light is more uniform, the photosynthesis of cherries is facilitated, the crop yield is improved, meanwhile, the light can be reflected and refracted, the temperature in the greenhouse can be adjusted, and the crop yield is improved. The temperature in the greenhouse is prevented from being too high, in summer, over-strong direct sunlight irradiation and excessive ultraviolet irradiation can be effectively avoided, part of ultraviolet can be effectively filtered, cherries are protected against ultraviolet damage, and therefore a good growth environment is provided for growth of the cherries; and cracking and damage of the film caused by ultraviolet irradiation can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse films for cherry planting, and in particular to a novel slow-reflection film for cherry planting. Background Art

[0002] Cherries are temperature-sensitive fruits. They are very vulnerable to low temperatures, frost, and even cold spring temperatures. Therefore, greenhouses are used in the cultivation process of cherries, and greenhouse films are laid on the surface of the greenhouses. The enclosure of the greenhouse film can not only effectively control pests, but also provide a warm environment to keep cherries in more stable growth conditions.

[0003] According to patent application No. 201611079513.1, a high-strength greenhouse film is disclosed, wherein the weight ratio of each component is 70-90 parts of polymethylpentene, 2-5 parts of high-strength nanofiller, 5-10 parts of plasticizer, 2-5 parts of tackifier, 2-3 parts of antioxidant, 1-2 parts of rare earth and 2-4 parts of metal zirconium, wherein the weight ratio of rare earth to metal zirconium is 1:2, and the weight ratio of each component in the high-strength nanofiller is 10-40 parts of silicon oxide, 20-30 parts of aluminum oxide, 20-30 parts of calcium oxide, 20-30 parts of titanium oxide, 5-10 parts of antimony oxide and 5-15 parts of boron nitride. The high-strength greenhouse film obtained by this comparative example has a strength better than that of ordinary plastic film. After testing, the tensile strength of the greenhouse film is 130-155MPa, and the elongation at break is 40%-50%;

[0004] However, when the film in the prior art is used, sunlight can directly penetrate the film and shine directly on the cherries, so that the temperature in the cherry planting environment is prone to being too high. At the same time, ultraviolet rays directly shine on the surface of the cherries, which will cause damage to the cherries and affect their growth. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of slow-reflection film for cherries, which has the advantages of reflecting and refracting light, and solves the problem in the prior art that when the film is used, sunlight can directly penetrate the film and shine on the cherries, thereby causing the temperature in the planting environment of the cherries to be too high, and ultraviolet rays directly shine on the surface of the cherries, thereby causing damage to the cherries and affecting the growth of the cherries.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a new type of cherry slow reflection film, whose preparation raw materials include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, microparticle titanium dioxide, ultraviolet stabilizer, chlorine dioxide, catalyst and curing agent, and the raw material ratio is 15-18 parts of polyethylene, 15-20 parts of polypropylene, 20-25 parts of ethylene-vinyl acetate copolymer, 10-15 parts of microparticle titanium dioxide, 2-4 parts of ultraviolet stabilizer, 1-3 parts of chlorine dioxide, 1-3 parts of catalyst and 0.5-1.5 parts of curing agent.

[0007] Preferably, the raw materials for its preparation include 15 parts of polyethylene, 15 parts of polypropylene, 20 parts of ethylene-vinyl acetate copolymer, 10 parts of microparticle titanium dioxide, 2 parts of ultraviolet stabilizer, 1 part of chlorine dioxide, 1 part of catalyst and 0.5 parts of curing agent.

[0008] Preferably, the raw materials for its preparation include 18 parts of polyethylene, 20 parts of polypropylene, 25 parts of ethylene-vinyl acetate copolymer, 15 parts of microparticle titanium dioxide, 4 parts of ultraviolet stabilizer, 3 parts of chlorine dioxide, 3 parts of catalyst and 1.5 parts of curing agent.

[0009] Preferably, the preparation method comprises the following steps:

[0010] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0011] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0012] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0013] Preferably, in step A, when the polyethylene, polypropylene and ethylene-vinyl acetate copolymer are hot-melted at high temperature, the heating temperature is 300 degrees Celsius to 500 degrees Celsius.

[0014] Preferably, in the step A, the high temperature solution is cooled to a temperature of eighty to ninety degrees Celsius during the static cooling process.

[0015] Preferably, when adding the microparticle titanium dioxide for stirring reaction in step B, the stirring method is low-speed stirring for thirty minutes and then high-speed stirring for one hour.

[0016] Preferably, when the ultraviolet stabilizer, chlorine dioxide and catalyst are added and stirred for reaction in step B, the stirring method is high-speed stirring for one hour.

[0017] Preferably, in step B, the solution needs to be cooled to 40 to 60 degrees Celsius before adding the curing agent, and the stirring method after adding the curing agent is low-speed stirring for three hours.

[0018] Preferably, in step C, the mixed solution can be coated by spin coating or dip coating, and the cooling time after curing is 1.5 hours.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention can change the distribution of light entering the greenhouse by combining fine titanium dioxide with polyethylene, polypropylene and ethylene-vinyl acetate copolymer, making the light more uniform, which is beneficial to the photosynthesis of cherries, thereby increasing crop yield. At the same time, it can reflect and refract light, which can help regulate the temperature in the greenhouse and prevent the temperature in the greenhouse from being too high. In summer, it can effectively avoid direct exposure to excessive sunlight and excessive exposure to ultraviolet rays. It can effectively filter part of the ultraviolet rays and protect cherries from damage by ultraviolet rays, thereby providing a good growth environment for the growth of cherries. At the same time, the toughness of the film body is improved by ethylene-vinyl acetate copolymer, and in combination with an ultraviolet stabilizer, it can prevent the cracking and damage of the film caused by ultraviolet radiation, thereby making the film body have a longer service life. By combining chlorine dioxide with a catalyst, the influence of suspended matter in the atmosphere on the film surface can be reduced, and the transparency and reflective effect of the film body can be maintained. DETAILED DESCRIPTION

[0021] A new type of cherry slow reflection film, whose preparation raw materials include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, microparticle titanium dioxide, ultraviolet stabilizer, chlorine dioxide, catalyst and curing agent, and the raw material ratio is 15-18 parts of polyethylene, 15-20 parts of polypropylene, 20-25 parts of ethylene-vinyl acetate copolymer, 10-15 parts of microparticle titanium dioxide, 2-4 parts of ultraviolet stabilizer, 1-3 parts of chlorine dioxide, 1-3 parts of catalyst and 0.5-1.5 parts of curing agent.

[0022] The preparation method thereof comprises the following steps:

[0023] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0024] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0025] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0026] Embodiment 2:

[0027] In the first embodiment, the following steps are added:

[0028] The raw materials for preparing the composite material include 15 parts of polyethylene, 15 parts of polypropylene, 20 parts of ethylene-vinyl acetate copolymer, 10 parts of micro-titanium dioxide, 2 parts of ultraviolet stabilizer, 1 part of chlorine dioxide, 1 part of catalyst and 0.5 part of curing agent.

[0029] The preparation method thereof comprises the following steps:

[0030] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0031] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0032] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0033] Embodiment three:

[0034] In the second embodiment, the following steps are added:

[0035] The raw materials for preparing the composite material include 18 parts of polyethylene, 20 parts of polypropylene, 25 parts of ethylene-vinyl acetate copolymer, 15 parts of micro-particle titanium dioxide, 4 parts of ultraviolet stabilizer, 3 parts of chlorine dioxide, 3 parts of catalyst and 1.5 parts of curing agent.

[0036] The preparation method thereof comprises the following steps:

[0037] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0038] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0039] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0040] Embodiment 4:

[0041] In the third embodiment, the following steps are added:

[0042] In the step A, when the polyethylene, polypropylene and ethylene-vinyl acetate copolymer are melted at high temperature, the heating temperature is 300 degrees Celsius to 500 degrees Celsius.

[0043] The preparation method thereof comprises the following steps:

[0044] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0045] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0046] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0047] Embodiment five:

[0048] In the fourth embodiment, the following steps are added:

[0049] In the step A, the high temperature solution is cooled to a temperature of 80 to 90 degrees Celsius during the cooling process.

[0050] The preparation method thereof comprises the following steps:

[0051] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0052] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0053] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0054] Embodiment six:

[0055] In the fifth embodiment, the following steps are added:

[0056] When adding the micro-particle titanium dioxide for stirring reaction in step B, the stirring method is to stir at a low speed for 30 minutes and then stir at a high speed for one hour.

[0057] The preparation method thereof comprises the following steps:

[0058] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0059] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0060] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0061] Embodiment seven:

[0062] In the sixth embodiment, the following steps are added:

[0063] When the ultraviolet stabilizer, chlorine dioxide and catalyst are added and stirred for reaction in step B, the stirring method is high-speed stirring for one hour.

[0064] The preparation method thereof comprises the following steps:

[0065] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0066] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0067] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0068] Embodiment eight:

[0069] In the seventh embodiment, the following steps are added:

[0070] In the step B, the solution needs to be cooled to 40 to 60 degrees Celsius before adding the curing agent, and the stirring method after adding the curing agent is low-speed stirring for three hours.

[0071] The preparation method thereof comprises the following steps:

[0072] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0073] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0074] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0075] Embodiment nine:

[0076] In the eighth embodiment, the following steps are added:

[0077] In the step C, the mixed solution can be coated by spin coating or dip coating, and the cooling time after solidification is 1.5 hours.

[0078] The preparation method thereof comprises the following steps:

[0079] A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor;

[0080] B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend;

[0081] C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of cherry slow reflection film, characterized by: The preparation raw materials include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, micro-particle titanium dioxide, ultraviolet stabilizer, chlorine dioxide, catalyst and curing agent, and the raw material ratio is 15-18 parts of polyethylene, 15-20 parts of polypropylene, 20-25 parts of ethylene-vinyl acetate copolymer, 10-15 parts of micro-particle titanium dioxide, 2-4 parts of ultraviolet stabilizer, 1-3 parts of chlorine dioxide, 1-3 parts of catalyst and 0.5-1.5 parts of curing agent.

2. The novel cherry slow reflection film according to claim 1, characterized in that: The raw materials for preparing the composite material include 15 parts of polyethylene, 15 parts of polypropylene, 20 parts of ethylene-vinyl acetate copolymer, 10 parts of micro-titanium dioxide, 2 parts of ultraviolet stabilizer, 1 part of chlorine dioxide, 1 part of catalyst and 0.5 part of curing agent.

3. The novel cherry slow reflection film according to claim 1, characterized in that: The raw materials for preparing the composite material include 18 parts of polyethylene, 20 parts of polypropylene, 25 parts of ethylene-vinyl acetate copolymer, 15 parts of micro-particle titanium dioxide, 4 parts of ultraviolet stabilizer, 3 parts of chlorine dioxide, 3 parts of catalyst and 1.5 parts of curing agent.

4. A method for preparing a novel cherry slow reflection film according to any one of claims 1 to 3, characterized in that: The preparation method comprises the following steps: A. First, polyethylene, polypropylene and ethylene-vinyl acetate copolymer are poured into a high-temperature furnace for melting and heating to obtain a high-temperature solution, and then the obtained high-temperature solution is allowed to stand and cool before being introduced into a reactor; B. Then, adding micro-particle titanium dioxide into the reaction kettle, and then using a stirring device to stir the solution and micro-particle titanium dioxide for reaction, and then adding ultraviolet stabilizer, chlorine dioxide and catalyst into the reaction kettle after the stirring reaction, and then continuing to stir to make them blend after the addition is completed, and then cooling the mixture after stirring and blending, and then adding curing agent and stirring again to make them blend; C. Finally, the stirred and melted mixed solution is coated on the surface of the substrate. After coating, the coated substrate is heated. The high-temperature heating treatment is used to promote crystallization and film solidification. After heating and solidification, the finished product can be obtained by cooling it statically.

5. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: In the step A, when the polyethylene, polypropylene and ethylene-vinyl acetate copolymer are melted at high temperature, the heating temperature is 300 degrees Celsius to 500 degrees Celsius.

6. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: In the step A, the high temperature solution is cooled to a temperature of 80 to 90 degrees Celsius during the cooling process.

7. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: When adding the micro-particle titanium dioxide for stirring reaction in step B, the stirring method is to stir at a low speed for 30 minutes and then stir at a high speed for one hour.

8. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: When the ultraviolet stabilizer, chlorine dioxide and catalyst are added and stirred for reaction in step B, the stirring method is high-speed stirring for one hour.

9. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: In the step B, the solution needs to be cooled to 40 to 60 degrees Celsius before adding the curing agent, and the stirring method after adding the curing agent is low-speed stirring for three hours.

10. The method for preparing a novel cherry slow reflection film according to claim 4, characterized in that: In the step C, the mixed solution can be coated by spin coating or dip coating, and the cooling time after solidification is 1.5 hours.