WO2021097976A1 - 一种转光膜及多层转光膜制备方法 - Google Patents

一种转光膜及多层转光膜制备方法 Download PDF

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WO2021097976A1
WO2021097976A1 PCT/CN2019/126081 CN2019126081W WO2021097976A1 WO 2021097976 A1 WO2021097976 A1 WO 2021097976A1 CN 2019126081 W CN2019126081 W CN 2019126081W WO 2021097976 A1 WO2021097976 A1 WO 2021097976A1
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film
antioxidant
light
layer
light conversion
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French (fr)
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徐蕾
张在保
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山东森博斯特塑胶科技有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/22—Shades or blinds for greenhouses, or the like
    • A01G9/222—Lamellar or like blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/132—Phenols containing keto groups, e.g. benzophenones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/15—Heterocyclic compounds having oxygen in the ring
    • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1545—Six-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/45—Heterocyclic compounds having sulfur in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
    • 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

Definitions

  • the invention relates to a thin film and a preparation method thereof, in particular to a preparation method of a light-transmitting film and a multilayer light-transmitting film.
  • Light film is a kind of film that realizes light conversion by adding light conversion agent. It can convert ultraviolet light harmful to plant growth into blue-violet light and red-orange light useful for crops, or green light and yellow-green light that plants do not absorb. Converted into red light. That is, by changing the light quality that passes through the light conversion film, it promotes the absorption of nitrogen, phosphorus, potassium, zinc and other nutrients by plants, increases the content of photosynthesis products in the leaves, promotes crop growth, and reduces pests and diseases. .
  • the light conversion films used in the market are all single-layer films, that is, a single-layer film formed by adding a light conversion agent to the original material group. This kind of film has certain mechanical properties and light conversion effects. defect.
  • the present invention provides a light transfer film
  • the present invention is realized as follows:
  • a light transfer film comprising a film body and a light transfer film layer.
  • the light transfer film layer includes 18%-22% of a light transfer agent, 55%-60% of an organic carrier, and 13%-15% of a light stabilizer by weight percentage. And antioxidant 9% to 12%; the film body includes 60% to 75% of the film base, 12% to 20% of the light stabilizer and 10% to 20% of the antioxidant.
  • the organic carrier includes one or more of low-density polyethylene, linear polyethylene, high-density polyethylene, polypropylene, and ethylene-vinyl acetate copolymer
  • the film matrix includes low-density polyethylene, linear polyethylene, medium A mixture of one or more of density polyethylene, high density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, and polyvinyl chloride with metallocene polyethylene.
  • the present invention also provides a multi-layer light conversion film, the following is the technical solution:
  • a multi-layer light-converting film comprising the above-mentioned film body and at least one light-converting film layer, the film body is bonded to one side of the light-converting film layer; and also includes a film inner layer bonded to the other side of the light-converting film layer.
  • the inner layer includes a shaped film and a coating layer, and the shaped film contains an organic carrier, a light stabilizer of 12%-20% and an antioxidant 10%-20% by weight.
  • the coating layer includes an aqueous dripping anti-fogging coating liquid.
  • the light conversion agent includes one of fluorescein sodium, acridine yellow, fluorescent yellow YG-51, 4,8-dimethyl-7 carboxycoumarin, acridine red, and fluorescent red GG.
  • light stabilizers include phenyl salicylate, p-tert-butyl phenyl salicylate, resorcinol but benzoate, 2,4-dihydroxybenzophenone, 2-hydroxy-4- Methoxybenzophenone, bisphenol A bis-salicylate, 2-hydroxy-4-methoxy-benzophenone-5-sulfonic acid, (2,2,6,6-tetramethyl- 4-piperidine)imine, succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinol polymer, sebacic acid bis-2,2,6,6- One or more of tetramethylpiperidinol esters.
  • antioxidants include antioxidant 168, antioxidant 1010, antioxidant 1076, antioxidant 2246, antioxidant 300, antioxidant 330, antioxidant 3114, antioxidant 245, 2,6- One or more of di-tert-butyl-p-cresol and 2,4,6-tri-tert-butylphenol.
  • the present invention also provides a preparation method for preparing a multi-layer light conversion film.
  • the following is a technical solution:
  • a method for preparing a multi-layer light conversion film The metered film body, the light conversion film layer and the forming film are mixed, and the mixed materials are fed into a multi-layer co-extruder to be melted and extruded, and then an aqueous stream is used.
  • the anti-fogging coating liquid is used to coat and shape the inner layer.
  • the extruded film is subjected to an inflation operation to form a cylindrical film or bubble, the cylindrical film or bubble is cooled, the air is discharged, and the surface of the film is corona treated.
  • the melting temperature is 180-190°C
  • the film expansion ratio is 1:3-5
  • the film draw ratio is 1:7-15.
  • the method provided by the present invention can convert ultraviolet light in sunlight into red light by adding a light conversion agent, promote the absorption of nutrients such as nitrogen, phosphorus, potassium, and zinc by plants, and increase the content of photosynthetic products in leaves. , Promote the growth of crops, and at the same time play a role in reducing pests and diseases.
  • the light conversion film provided by the present invention has a multilayer structure and can also have better tear resistance and puncture resistance on the basis of light conversion operations, and has good mechanical properties, low melting point, and good low-temperature heat-seal performance. High heat-sealing strength, good optical performance, film anti-adhesion and acupuncture properties. Thereby reducing high crystallinity, improving flexibility, impact resistance, filler compatibility and heat sealing performance, good transparency and surface gloss, good chemical stability, good anti-aging and ozone resistance strength, and non-toxic.
  • the water-based droplet anti-fogging coating solution is applied to form a highly transparent hydrophilic coating, so that the film has an excellent droplet anti-fogging function. Because the coating and the surface of the polyethylene film have a strong bonding force and excellent anti-aging performance, the dripping anti-fogging function of the coated agricultural film is synchronized with the service life of the agricultural film itself.
  • the conventional operation of the coating film sold in the market is After the shed is locked, the coating layer will form a transparent water film such as a mirror effect within 12 hours, and there will be no dripping in the shed for long-term use.
  • Figure 1 is a structural diagram of the present invention
  • Film body (outer layer); 200, secondary outer layer; 300, middle layer; 400, secondary inner layer; 500, inner layer.
  • a light-transmitting film comprising a film body 100 and a light-transmitting film layer.
  • the light-transmitting film layer includes 18%-22% of a light-transmitting agent, an organic carrier 55%-60%, and a light stabilizer 13%-15% by weight.
  • % And antioxidant 9% to 12%; the film body includes 60% to 75% of the film base, 12% to 20% of light stabilizer and 10% to 20% of antioxidant.
  • the light conversion film layer is at least one layer to form a multilayer light conversion film.
  • the multilayer light conversion film includes the above-mentioned film body 100 and at least one light conversion film layer (200, 300, 400).
  • the main body 100 is attached to one side of the light conversion film layer 200; it also includes a film inner layer 500 attached to one side of the light conversion film layer 400.
  • the film inner layer 500 includes a molded film and a coating layer.
  • the molded film is calculated by weight percentage Organic carrier, light stabilizer 12%-20% and antioxidant 10%-20%.
  • a method for preparing a multi-layer light conversion film The metered film body 100, the light conversion film layer (200, 300, 400) and the forming film are mixed, and the mixed materials are fed into a multi-layer co-extruder for melt extrusion molding. Then use the water-based dripping anti-fogging coating liquid to coat and shape the inner layer.
  • Figure 1 is a multilayer light conversion film provided by the present invention, as shown in Figure 1,
  • the film has a five-layer structure, including a film body 100 that is an outer layer and a film inner layer 500. Three light-transmitting film layers (200, 300, 400) are provided between the film body 100 and the film inner layer 500.
  • the film body 100 includes 75% by weight of the film base, 12% of the light stabilizer and 20% of the antioxidant, wherein the film base is low-density polyethylene, and the light stabilizer is phenyl salicylate.
  • the antioxidant is antioxidant 168.
  • the components of the three light conversion film layers are all the same, mainly composed of 55% by weight of organic carrier, 18% of light conversion agent, 13% of light stabilizer, and 9% of antioxidant;
  • the organic carrier is low-density polyethylene
  • the light conversion agent is sodium fluorescein
  • the light stabilizer is phenyl salicylate
  • the antioxidant is antioxidant 168.
  • the height of the condensation line of the film is 200mm, and then it enters the chevron to drain the air in the film bubble; the traction ratio of the film is 1:7; then the film surface corona treatment is carried out to wet the film
  • the tension is increased to more than 38 dyne/square centimeter, and then the outer layer is coated with the coating liquid, heated, dried and cured, and folded.
  • the film has a five-layer structure, including a film body 100 that is an outer layer and a film inner layer 500. Three light-transmitting film layers (200, 300, 400) are provided between the film body 100 and the film inner layer 500.
  • the film body 100 includes 65% by weight of the film substrate, 15% light stabilizer and 20% antioxidant, wherein the film substrate is linear polyethylene, and the light stabilizer is p-tert-butyl salicylic acid. Phenyl ester, antioxidant is antioxidant 330.
  • the components of the three light conversion film layers are all the same, and are mainly composed of 57% by weight of organic carrier, 20% of light conversion agent, 14% of light stabilizer, and 11% of antioxidant;
  • the organic carrier is linear polyethylene
  • the light conversion agent is fluorescent yellow YG-51
  • the light stabilizer is 2,4-dihydroxybenzophenone
  • the antioxidant is antioxidant 330.
  • the height of the condensation line of the film is 250mm, and then it enters the chevron to drain the air in the film bubble; the traction ratio of the film is 1:9; then the film surface is corona treated to wet the film The tension is increased to more than 38 dyne/square centimeter, and then the outer layer is coated with the coating liquid, heated, dried and cured, and folded.
  • the film has a five-layer structure, including a film body 100 that is an outer layer and a film inner layer 500. Three light-transmitting film layers (200, 300, 400) are provided between the film body 100 and the film inner layer 500.
  • the film body 100 includes 60% by weight of the film base, 20% light stabilizer and 20% antioxidant, wherein the film base is high-density polyethylene, and the light stabilizer is resorcinol but benzene. Formate, antioxidant is antioxidant 3114.
  • the components of the three light conversion film layers are all the same, and are mainly composed of 60% by weight of organic carrier, 22% of light conversion agent, 15% of light stabilizer, and 12% of antioxidant;
  • the organic carrier is high-density polyethylene
  • the light conversion agent is fluorescent yellow YG-51
  • the light stabilizer is resorcinol but benzoate
  • the antioxidant is antioxidant 3114.
  • the height of the condensation line of the film is 250mm, and then enters the chevron to drain the air in the film bubble; the traction ratio of the film is 1:15; then the film surface corona treatment is performed to wet the film The tension is increased to more than 38 dyne/square centimeter, and then the outer layer is coated with the coating liquid, heated, dried and cured, and folded.

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Abstract

本发明涉及薄膜及其制备方法，具体为一种转光膜及多层转光膜制备方法；包括薄膜本体、薄膜内层以及设置于所述薄膜本体与所述薄膜内层之间的至少一层和转光膜层；转光膜层包括按重量百分比计的转光剂18％～22％，有机载体55％～60％，光稳定剂13％～15％和抗氧化剂9％～12％；所述薄膜本体包括薄膜基体60％～75％、光稳定剂12％～20％和抗氧化剂10％～20％；本发明提供的方法，通过转光剂的添加能够将阳光中的紫外光转换为红光，促进植物对于氮、磷、钾、锌等营养元素的吸收，提高叶片中的光合作用产物含量升高，促进作物生长，同时起到减少病虫害的作用。

Description

一种转光膜及多层转光膜制备方法 技术领域
本发明涉及薄膜及其制备方法，具体为一种转光膜及多层转光膜制备方法。
背景技术
光膜是一种通过添加转光剂来实现光转换的薄膜，它能将对植物生长有害的紫外光转换成对作物有用的蓝紫光及红橙光，或将植物不吸收的绿光和黄绿光转换成红光。即通过改变透过转光膜的光质，促进植物对氮、磷、钾、锌等营养元素的吸收，提高叶片中的光合作用产物含量升高，促进作物生长，同时起到减少病虫害的作用。
目前市面上的进行应用的转光膜都是单层膜，即在原有的材料集体上通过添加转光剂形成的单层膜，这种膜在力学性能以及在转光效果上还具有一定的缺陷。
发明内容
为了解决以上的技术问题，本发明提供一种转光膜；
本发明是这样实现的：
一种转光膜，包括薄膜本体和转光膜层，转光膜层包括按重量百分比计的转光剂18％～22％，有机载体55％～60％，光稳定剂13％～15％和抗氧化剂9％～12％；所述薄膜本体包括薄膜基体60％～75％、 光稳定剂12％～20％和抗氧化剂10％～20％。
进一步的，有机载体包括低密度聚乙烯、线性聚乙烯、高密度聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物中的一种或几种，薄膜基体包括低密度聚乙烯、线性聚乙烯、中密度聚乙烯、高密度聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物、聚氯乙烯中的一种或几种与茂金属聚乙烯的混合物。
本发明还提供了一种多层转光膜，以下是技术方案：
一种多层转光膜，包括上述的薄膜本体和至少一层转光膜层，薄膜本体与转光膜层一面贴合；还包括与转光膜层另一面贴合的薄膜内层，薄膜内层包括成型薄膜和涂覆层，成型薄膜按重量百分数计的有机载体、光稳定剂12％～20％和抗氧化剂10％～20％。
进一步的，涂覆层包括水性流滴消雾涂覆液。
进一步的，转光剂包括荧光素钠，丫啶黄，荧光黄YG-51，4，8-二甲基-7羧基香豆素，丫啶红，荧光红GG中一种。
进一步的，光稳定剂包括水杨酸苯酯、水杨酸对叔丁基苯酯、间苯二酚但苯甲酸酯、2，4-二羟基二苯甲酮、2-羟基-4-甲氧基二苯甲酮、双酚A双水杨酸酯、2-羟基-4-甲氧基-二苯甲酮-5-磺酸、(2,2,6,6-四甲基-4-哌啶)亚胺、丁二酸与4-羟基-2,2,6,6-四甲基-1-哌啶醇的聚合物、癸二酸双-2,2,6,6-四甲基哌啶醇酯中的一种或几种。
进一步的，抗氧化剂包括抗氧剂168、抗氧剂1010、抗氧剂1076、抗氧剂2246、抗氧剂300、抗氧剂330、抗氧剂3114、抗氧剂245、 2,6-二叔丁基对甲酚、2,4,6-三叔丁基苯酚中的一种或几种。
本发明还提供了一种制备方法，用于制备多层转光膜，以下是技术方案：
一种多层转光膜制备方法，将计量后的上述的薄膜本体、转光膜层和成型薄膜进行混合，将混合后的物料进入至多层共挤出机熔融挤出成型，后使用水性流滴消雾涂覆液对内层进行涂覆成型。
进一步的，挤出成型的薄膜进行吹胀作业形成筒状薄膜或膜泡，对筒状薄膜或膜泡进行冷却后将空气排净，并对薄膜表面进行电晕处理。
进一步的，融融温度为180～190℃，薄膜吹胀比为1：3～5，所述薄膜牵引比为1：7～15。
上述方案的有益效果：
本发明提供的方法，通过转光剂的添加能够将阳光中的紫外光转换为红光，促进植物对于氮、磷、钾、锌等营养元素的吸收，提高叶片中的光合作用产物含量升高，促进作物生长，同时起到减少病虫害的作用。并且，本发明提供的转光膜为多层结构能够在转光作业的基础之上还具有较好的抗撕裂强度和抗穿刺强度，具有力学性能好、熔点低、低温热封性能好、热封强度高、光学性能好、薄膜抗黏性及针刺性好等特点。从而降低了高结晶度，提高了柔韧性、抗冲击性、填料相溶性和热密封性能，透明性和表面光泽性好，化学稳定性良好， 抗老化和耐臭氧强度好，无毒性。
涂覆用水性流滴消雾涂覆液形成一层高透明的亲水涂层，使薄膜具备优良的流滴消雾功能。因为涂层与聚乙烯薄膜表面有较强的结合力及优良的抗老化性能，使涂覆后的农膜的流滴消雾功能与农膜自身使用寿命同步，按市面销售涂覆膜常规操作扣棚后，涂覆层在12小时内形成透明水膜如镜面效果，长期使用棚内不挂滴。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本发明结构图；
100、薄膜本体(外层)；200、次外层；300、中层；400、次内层；500、内层。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关 系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
一种转光膜，包括薄膜本体100和转光膜层，转光膜层包括按重量百分比计的转光剂18％～22％，有机载体55％～60％，光稳定剂13％～15％和抗氧化剂9％～12％；所述薄膜本体包括薄膜基体60％～75％、光稳定剂12％～20％和抗氧化剂10％～20％。
优选地，转光膜层为至少一层，以构成多层转光膜，如图1所示，多层转光膜包括上述的薄膜本体100和至少一层转光膜层(200,300,400)，薄膜本体100与转光膜层200的一面贴合；还包括与转光膜层400的一面贴合的薄膜内层500，薄膜内层500包括成型薄膜和涂覆层，成型薄膜按重量百分数计的有机载体、光稳定剂12％～20％和抗氧化剂10％～20％。
一种多层转光膜制备方法，将计量后的上述的薄膜本体100、转光膜层(200,300,400)和成型薄膜进行混合，将混合后的物料进入至多层共挤出机熔融挤出成型，后使用水性流滴消雾涂覆液对内层进行涂覆成型。
实施例一
参阅图1，图1为本发明提供的一种多层转光膜，如图1所示，
薄膜为五层结构，包括薄膜本体100即外层以及薄膜内层500，在薄膜本体100与薄膜内层500之间设置有三层转光膜层(200,300,400)。
在本实施例中，薄膜本体100包括按重量百分比计的薄膜基体75％，光稳定剂12％和抗氧化剂20％，其中薄膜基体为低密度聚乙烯，光稳定剂为水杨酸苯酯，抗氧化剂为抗氧剂168。
在本实施例中，三层转光膜层(200,300,400)的组分都相同，主要由按重量百分比计有机载体55％，转光剂18％，光稳定剂13％，抗氧化剂9％组成；其中有机载体为低密度聚乙烯，转光剂为荧光素钠，光稳定剂为水杨酸苯酯，抗氧化剂为抗氧剂168。
按上述配方，经过计量后分别混合均匀，分别加入料斗，进入挤出机，于180℃熔融、挤出、造粒制成功能性母粒；经多层共挤出机于180℃熔融挤出，然后进入环形共挤模头形成五层薄膜挤出，从模头中心的冷却风管吹入压缩空气，将薄膜吹胀成筒状薄膜或膜泡，薄膜的吹胀比1：3。经内部和外部空气冷却，薄膜的冷凝线高度为200mm，然后进入人字夹板将棚膜泡内的空气排净；薄膜的牵引比1：7；然后进行薄膜表面电晕处理使薄膜的润湿张力提高到大于38达因/平方厘米，再用涂覆液进行外层涂覆、加热烘干固化、折叠。
实施例二
薄膜为五层结构，包括薄膜本体100即外层以及薄膜内层500，在薄膜本体100与薄膜内层之间500设置有三层转光膜层(200,300,400)。
在本实施例中，薄膜本体100包括按重量百分比计的薄膜基体65％，光稳定剂15％和抗氧化剂20％，其中薄膜基体为线性聚乙烯，光稳定剂为水杨酸对叔丁基苯酯，抗氧化剂为抗氧剂330。
在本实施例中，三层转光膜层(200,300,400)的组分都相同，主要由按重量百分比计有机载体57％，转光剂20％，光稳定剂14％，抗氧化剂11％组成；其中有机载体为线性聚乙烯，转光剂为荧光黄YG-51，光稳定剂为2，4-二羟基二苯甲酮，抗氧化剂为抗氧剂330。
按上述配方，经过计量后分别混合均匀，分别加入料斗，进入挤出机，于185℃熔融、挤出、造粒制成功能性母粒；经多层共挤出机于185℃熔融挤出，然后进入环形共挤模头形成五层薄膜挤出，从模头中心的冷却风管吹入压缩空气，将薄膜吹胀成筒状薄膜或膜泡，薄膜的吹胀比1：5。经内部和外部空气冷却，薄膜的冷凝线高度为250mm，然后进入人字夹板将棚膜泡内的空气排净；薄膜的牵引比1：9；然后进行薄膜表面电晕处理使薄膜的润湿张力提高到大于38达因/平方厘米，再用涂覆液进行外层涂覆、加热烘干固化、折叠。
实施例三
薄膜为五层结构，包括薄膜本体100即外层以及薄膜内层500，在薄膜本体100与薄膜内层500之间设置有三层转光膜层(200,300,400)。
在本实施例中，薄膜本体100包括按重量百分比计的薄膜基体60％，光稳定剂20％和抗氧化剂20％，其中薄膜基体为高密度聚乙烯，光稳定剂为间苯二酚但苯甲酸酯，抗氧化剂为抗氧剂3114。
在本实施例中，三层转光膜层(200,300,400)的组分都相同，主要由按重量百分比计有机载体60％，转光剂22％，光稳定剂15％，抗氧化剂12％组成；其中有机载体为高密度聚乙烯，转光剂为荧光黄YG-51，光稳定剂为间苯二酚但苯甲酸酯，抗氧化剂为抗氧剂3114。
按上述配方，经过计量后分别混合均匀，分别加入料斗，进入挤出机，于190℃熔融、挤出、造粒制成功能性母粒；经多层共挤出机于190℃熔融挤出，然后进入环形共挤模头形成五层薄膜挤出，从模头中心的冷却风管吹入压缩空气，将薄膜吹胀成筒状薄膜或膜泡，薄膜的吹胀比1：5。经内部和外部空气冷却，薄膜的冷凝线高度为250mm，然后进入人字夹板将棚膜泡内的空气排净；薄膜的牵引比1：15；然后进行薄膜表面电晕处理使薄膜的润湿张力提高到大于38达因/平方厘米，再用涂覆液进行外层涂覆、加热烘干固化、折叠。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (7)

  1. 一种转光膜，其特征在于，包括薄膜本体、薄膜内层以及设置于所述薄膜本体与所述薄膜内层之间的至少一层转光膜层；
    所述薄膜本体与所临近的所述转光膜层的一面贴合；所述薄膜内层与所临近的所述转光膜层的一面贴合；所述薄膜内层包括成型薄膜和涂覆层，所述涂覆层包括水性流滴消雾涂覆液；
    所述转光膜层包括按重量百分比计的转光剂18％～22％，有机载体55％～60％，光稳定剂13％～15％和抗氧化剂9％～12％；所述薄膜本体包括薄膜基体60％～75％、光稳定剂12％～20％和抗氧化剂10％～20％；
    所述抗氧化剂包括抗氧剂168、抗氧剂1010、抗氧剂1076、抗氧剂2246、抗氧剂300、抗氧剂330、抗氧剂3114、抗氧剂245、2,6-二叔丁基对甲酚、2,4,6-三叔丁基苯酚中的一种或几种；
    所述转光剂包括荧光素钠，丫啶黄，荧光黄YG-51，4，8-二甲基-7羧基香豆素，丫啶红，荧光红GG中一种。
  2. 根据权利要求1所所述的多层转光膜，其特征在于，所述有机载体包括低密度聚乙烯、线性聚乙烯、高密度聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物中的一种或几种，所述薄膜基体包括低密度聚乙烯、线性聚乙烯、中密度聚乙烯、高密度聚乙烯、聚丙烯、乙烯-醋酸乙烯共聚物、聚氯乙烯中的一种或几种与茂金属聚乙烯的混合物
  3. 根据权利要求2所述的多层转光膜，其特征在于，所述光稳 定剂包括水杨酸苯酯、水杨酸对叔丁基苯酯、间苯二酚但苯甲酸酯、2，4-二羟基二苯甲酮、2-羟基-4-甲氧基二苯甲酮、双酚A双水杨酸酯、2-羟基-4-甲氧基-二苯甲酮-5-磺酸、(2,2,6,6-四甲基-4-哌啶)亚胺、丁二酸与4-羟基-2,2,6,6-四甲基-1-哌啶醇的聚合物、癸二酸双-2,2,6,6-四甲基哌啶醇酯中的一种或几种。
  4. 根据权利要求2所述的多层转光膜，其特征在于，所述抗氧化剂包括抗氧剂168、抗氧剂1010、抗氧剂1076、抗氧剂2246、抗氧剂300、抗氧剂330、抗氧剂3114、抗氧剂245、2,6-二叔丁基对甲酚、2,4,6-三叔丁基苯酚中的一种或几种。
  5. 一种多层转光膜制备方法，其特征在于，将计量后的权利要求3所述的薄膜本体、转光膜层和成型薄膜进行混合，将混合后的物料进入至多层共挤出机熔融挤出成型，后使用水性流滴消雾涂覆液对内层进行涂覆成型。
  6. 根据权利要求5所述的多层转光膜制备方法，其特征在于，对所述挤出成型的薄膜进行吹胀作业形成筒状薄膜或膜泡，对所述筒状薄膜或膜泡进行冷却后将空气排净，并对薄膜表面进行电晕处理。
  7. 根据权利要求9所述的多层转光膜制备方法，其特征在于，所述融融温度为180～190℃，所述薄膜吹胀比为1：3～5，所述薄膜牵引比为1：7～15。
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CN205052327U (zh) * 2015-05-19 2016-03-02 侯培毅 一种农用聚烯烃转光棚膜
CN109232941A (zh) * 2017-05-31 2019-01-18 北京化工大学 转光保温永久亲水防雾滴的多功能聚合物薄膜及其制备方法
CN108099326A (zh) * 2017-12-14 2018-06-01 河南省银丰塑料有限公司 三层共挤高保温转光po膜
CN111002682A (zh) * 2019-11-21 2020-04-14 徐蕾 一种转光膜、多层转光膜及其多层转光膜制备方法

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