CN110607015B - Plastic light conversion agricultural film with lasting light conversion effect and preparation method thereof - Google Patents
Plastic light conversion agricultural film with lasting light conversion effect and preparation method thereof Download PDFInfo
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- CN110607015B CN110607015B CN201910819154.6A CN201910819154A CN110607015B CN 110607015 B CN110607015 B CN 110607015B CN 201910819154 A CN201910819154 A CN 201910819154A CN 110607015 B CN110607015 B CN 110607015B
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- light conversion
- rare earth
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- antioxidant
- agricultural film
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 165
- 230000000694 effects Effects 0.000 title claims abstract description 33
- 229920003023 plastic Polymers 0.000 title claims abstract description 30
- 239000004033 plastic Substances 0.000 title claims abstract description 30
- 230000002045 lasting effect Effects 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 80
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 74
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 72
- 239000004005 microsphere Substances 0.000 claims abstract description 52
- 239000000919 ceramic Substances 0.000 claims abstract description 48
- 239000007921 spray Substances 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 31
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 28
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 238000010096 film blowing Methods 0.000 claims abstract description 23
- 239000004014 plasticizer Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005469 granulation Methods 0.000 claims abstract description 19
- 230000003179 granulation Effects 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 16
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 19
- -1 rare earth ion Chemical class 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 8
- MQHNKCZKNAJROC-UHFFFAOYSA-N dipropyl phthalate Chemical compound CCCOC(=O)C1=CC=CC=C1C(=O)OCCC MQHNKCZKNAJROC-UHFFFAOYSA-N 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 claims description 6
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 6
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 claims description 3
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 claims description 3
- 229960001826 dimethylphthalate Drugs 0.000 claims description 3
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- AYEKOFBPNLCAJY-UHFFFAOYSA-O thiamine pyrophosphate Chemical compound CC1=C(CCOP(O)(=O)OP(O)(O)=O)SC=[N+]1CC1=CN=C(C)N=C1N AYEKOFBPNLCAJY-UHFFFAOYSA-O 0.000 claims description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002241 glass-ceramic Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 5
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- XGLACMHMUWZUKF-UHFFFAOYSA-N O=S.[Y].[Eu] Chemical group O=S.[Y].[Eu] XGLACMHMUWZUKF-UHFFFAOYSA-N 0.000 description 5
- 238000007739 conversion coating Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910052693 Europium Inorganic materials 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N Phenanthrene Natural products C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 241000209149 Zea Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003081 coactivator Effects 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005274 electronic transitions Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical group 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- 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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- 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
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Protection Of Plants (AREA)
- Greenhouses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of agricultural films, and discloses a plastic light conversion agricultural film with a lasting light conversion effect and a preparation method thereof. The preparation method comprises the following preparation processes: (1) mixing liquid glass, deionized water, an inorganic rare earth light conversion agent and ceramic microspheres to prepare slurry, and then carrying out spray granulation to prepare a composite inorganic rare earth light conversion agent; (2) the composite inorganic rare earth light conversion agent, matrix resin, plasticizer and antioxidant are mixed uniformly and then blown by a film blowing machine to obtain the plastic light conversion agricultural film with lasting light conversion effect. The spherical composite inorganic rare earth light conversion agent obtained by the invention is beneficial to uniform dispersion in a film matrix, is not easy to cause agglomeration, improves the fluidity, has good compatibility with matrix resin, stable chemical property, no precipitation on the surface, good appearance smoothness, excellent water resistance and durable light conversion effect, and can effectively improve the light conversion efficiency of the plastic light conversion agricultural film, thereby having wide application range.
Description
Technical Field
The invention relates to the field of agricultural films, and discloses a plastic light conversion agricultural film with a lasting light conversion effect and a preparation method thereof.
Background
In recent years, the functionalization and high performance of agricultural films in China are becoming the mainstream of agricultural film development. The light conversion design principle of the agricultural film is based on the principle of optical ecology, and the light conversion agent is introduced into the agricultural film to realize light energy conversion, so that the light quality of the plastic greenhouse is improved, and the comprehensive utilization rate of light energy is improved. Compared with the common film and the existing functional film, the film has more obvious advantages in the aspects of crop yield increase, precocity, quality improvement and the like.
The light conversion function of the light conversion film is realized by adding the light conversion agent into the agricultural film, so the key for realizing the light energy conversion of the agricultural film and improving the transmission light quality lies in the development of the light conversion agent. Light conversion agents belong to photoluminescent materials and are generally classified into organic dyes, inorganic salts, complexes and the like according to the light conversion conditions, and have different application characteristics. Compared with organic compounds, the inorganic salt has low price, easy preparation and storage, good high temperature resistance and wide application of the inorganic salt light conversion agent.
Common inorganic light conversion agents are alkaline earth aluminates, oxides, sulfides, tungstates, silicates and the like doped with rare earth ions or heavy metal ions. Wherein, the inorganic compound forms regular crystal lattice, and the introduced rare earth ions or heavy metal ions are in the crystal lattice to play the role of activator. Light is emitted by the interaction of these metal centers with the crystal lattice. The research subject of the light conversion agent for the light conversion agricultural film mainly focuses on improving the light conversion efficiency and the light conversion effect.
Chinese patent application No. 201811309258.4 discloses a plant light conversion film and a preparation method and application thereof. The plant light conversion film comprises a plastic film and a composite material coated on the plastic film, wherein the composite material comprises resin and fluorescent powder, and the fluorescent powder is MAl12-xO19xTM wherein M is Sr2+Or Ca2+TM is Ti3+Or Cr3+(ii) a x is 0.001 to 0.1. The plant light conversion film provided by the invention can convert green part light which plays a small role in plant growth into near infrared light, is beneficial to plant growth, can be widely popularized and applied to the field of plant cultivation, and has great economic value. .
Chinese patent application No. 201810213079.4 discloses a red light conversion film based on rare earth europium complex and a preparation method and application thereof, belonging to the technical field of agricultural light conversion films. The red light conversion film is prepared from rare earth europium organic complex light conversion agent [ Eu (2-HBI) (phen)3]Cl3The dispersing agent, the organic solvent and the low-density polyethylene are prepared according to raw materials which are composed of a certain percentage. The preparation method of the red light conversion film comprises the steps of firstly, a certain amount of [ Eu (2-HBI) (phen)3]Cl3Soaking with organic solvent, adding into low density polyethylene particles together with a certain amount of dispersant, mixing, hot melting, and blow molding to obtain the final product.
According to the above, although the pure inorganic rare earth light conversion agent in the existing scheme improves the light conversion intensity and prolongs the service life, some defects still exist, such as poor light stability, fast light conversion attenuation, reduction of light transmittance along with the time extension, and the like, especially the dispersibility of common inorganic salt in a high polymer film is not good, so that the formed film has poor uniformity, the appearance smoothness of the product is influenced, rare earth agglomeration is caused, and the light conversion efficiency of the film is reduced.
Disclosure of Invention
In the prior widely applied plastic light conversion agricultural film, the inorganic rare earth light conversion agent has poor dispersibility in a high molecular film, so that the uniformity of the film is poor, and the appearance smoothness and the light conversion effect of the light conversion agricultural film are influenced.
In order to solve the problems, the invention adopts the following technical scheme:
a preparation method of a plastic light conversion agricultural film with a lasting light conversion effect comprises the following specific steps:
(1) mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 1-2 hours, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, collecting particles, washing for 2-4 times by using absolute ethyl alcohol, heating and drying for 1-2 hours at 100-120 ℃, and fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass to prepare a composite inorganic rare earth light conversion agent;
(2) and (2) uniformly premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, a plasticizer and an antioxidant, continuously uniformly mixing, extruding and granulating, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect.
The inorganic rare earth light conversion agent is a light conversion agent consisting of a matrix and a dopant, wherein the crystal of the matrix has certain defects, the anion and the cation of the matrix are optically transparent, the cation simultaneously has a closed shell electronic structure, and the dopant comprises an activator, a sensitizer, a coactivator and a cosolvent. The rare earth atoms have a special outer electronic layer structure, rich energy levels and 4f electronic transition characteristics, so that the rare earth atoms have an excellent energy conversion function. The photoluminescence process of the inorganic rare earth light conversion agent consists of three parts: absorption of light, energy transfer, reflection of light. When the light conversion agent is irradiated by sunlight, the rare earth ions are used as luminescence centers to absorb energy, outer layer electrons generate f-f transition and/or f-d transition, the transition is carried out from a ground state to an excited state, and energy difference is released in the form of light energy and heat energy in the process that the electrons are transited from the excited state to the ground state. Preferably, the inorganic rare earth light-converting agent in step (1) is at least one of rare earth ion-doped alkaline earth aluminate, oxide, sulfide, tungstate and silicate.
The liquid glass is nano-scale dispersed silicon dioxide, can form an invisible hydrophobic layer with strong repulsion to water to generate strong electrostatic attraction, and fixes the liquid glass on the sprayed material. In addition, the ceramic microspheres are used as light conversion agent carriers, and have the advantages of high sphericity, high strength, stable chemical properties, regular morphological structure, good fluidity and the like. The inorganic rare earth light conversion agent is fixed on the surface of the ceramic microsphere carrier by liquid glass. Preferably, the ceramic microspheres in the step (1) are at least one of alumina ceramic microspheres, silica ceramic microspheres, silicon carbide ceramic microspheres and lithium silicate ceramic microspheres, and the particle size of the ceramic microspheres is 3-8 μm. Furthermore, the raw material components comprise, by mass, 10-15% of liquid glass, 35-50% of deionized water, 15-20% of an inorganic rare earth light conversion agent and 25-30% of ceramic microspheres.
The process of spray granulation has the advantage of high drying speed, the surface area of the material liquid is greatly increased after atomization, 95-98% of water can be instantly evaporated in hot air flow, the drying time is only ten seconds to tens of seconds, the spray granulation drying device is particularly suitable for drying heat-sensitive materials, the obtained product is spherical particles, the particle size is uniform, the fluidity is good, the solubility is good, the product purity is high, and the quality is good. The invention utilizes a spray granulation process, and the inorganic rare earth light conversion agent is fixed on the surface of the ceramic microsphere carrier by liquid glass to obtain the spherical filler, so that the spherical filler is beneficial to uniform dispersion in a film matrix, is not easy to cause agglomeration, and has the advantages of good fluidity, good compatibility with matrix resin, stable chemical property, no surface precipitation, good appearance finish, excellent water resistance and lasting light conversion effect. Preferably, in the spray granulation process in the step (1), the heat source temperature of the pressure spray dryer is 180-200 ℃, the outlet temperature is 120-160 ℃, and the pump pressure is 1-2 MPa.
Preferably, in the present invention, the matrix resin in step (2) is one of polyethylene, polypropylene and polyvinyl chloride.
In a preferred embodiment of the present invention, the plasticizer in step (2) is at least one selected from dipropyl phthalate, dibutyl phthalate, diethyl phthalate, and dimethyl phthalate.
In the present invention, the antioxidant in step (2) is preferably at least one of antioxidant 1010, antioxidant 1076, antioxidant 164, antioxidant CA, antioxidant DNP, and antioxidant TPP.
Preferably, in the film blowing process of the film blowing machine in the step (2), the melting temperature is 180-200 ℃, and the die head temperature is 160-180 ℃.
Preferably, the raw material components in the step (2) comprise, by mass, 1-2% of the composite inorganic rare earth light conversion agent, 92-95% of the matrix resin, 2-4% of the plasticizer and 1-2% of the antioxidant.
Further, the method is simple. The invention provides a plastic light conversion agricultural film with lasting light conversion effect, which is prepared by the method, liquid glass and deionized water are mixed and stirred to form a uniform system, meanwhile, an inorganic rare earth light conversion agent and ceramic microspheres are added into a liquid glass solution for dipping, the prepared slurry is stirred and moved into a pressure spray dryer for spray granulation, the particles are collected and washed by absolute ethyl alcohol, and are heated and dried, and the inorganic rare earth light conversion agent is fixed on the surfaces of the ceramic microspheres through the solidification process of the liquid glass to prepare a composite inorganic rare earth light conversion agent; and uniformly mixing the composite inorganic rare earth light conversion agent, matrix resin, a plasticizer and an antioxidant, and then blowing a film by using a film blowing machine. The obtained spherical composite light conversion agent has good dispersibility in a plastic matrix, good fluidity and stable chemical property, and the obtained light conversion agricultural film has good appearance smoothness, excellent water resistance and lasting light conversion effect.
Compared with the prior art, the invention provides the plastic light conversion agricultural film with durable light conversion effect and the preparation method thereof, and the outstanding characteristics and excellent effects are as follows:
1. provides a method for preparing plastic light conversion agricultural film with lasting light conversion effect by fixing the light conversion agent on ceramic microspheres to prepare the composite light conversion agent.
2. The inorganic rare earth light conversion agent is fixed on the surface of the ceramic microsphere carrier by liquid glass, so that the obtained spherical filler is beneficial to uniform dispersion in a film matrix, is not easy to cause agglomeration, improves the fluidity, has good compatibility with matrix resin, stable chemical property, no surface precipitation, good appearance finish, excellent water resistance and lasting light conversion effect.
3. The agricultural film prepared by the method has excellent uniformity, effectively improves the light conversion efficiency of the plastic light conversion film, and has wide application range.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.
Example 1
(1) Mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 1.5 hours, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, washing 3 times by using absolute ethyl alcohol after collecting particles, heating and drying for 1.5 hours at 110 ℃, fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass, and preparing a composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are alumina ceramic microspheres; in the spray granulation process, the heat source temperature of the pressure spray dryer is 185 ℃, the outlet temperature is 150 ℃, and the pump pressure is 1.5 MPa;
the material components are, by mass percent, 13% of liquid glass, 43% of deionized water, 17% of inorganic rare earth light conversion agent and 27% of ceramic microspheres;
(2) premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, plasticizer and antioxidant uniformly, then continuously mixing uniformly, extruding and granulating at 175 ℃ by using a screw machine, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect; the matrix resin is polyethylene; the plasticizer is dipropyl phthalate; the antioxidant is antioxidant 1010; in the film blowing process of a film blowing machine, the melting temperature is 190 ℃ and the die head temperature is 175 ℃;
the light conversion coating comprises the following raw material components, by mass, 1% of a composite inorganic rare earth light conversion agent, 95% of matrix resin, 3% of a plasticizer and 1% of an antioxidant.
Example 2
(1) Mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 1h, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, washing for 2 times by using absolute ethyl alcohol after collecting particles, heating and drying for 2h at 105 ℃, fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass, and preparing the composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are silicon dioxide ceramic microspheres; in the spray granulation process, the heat source temperature of the pressure spray dryer is 185 ℃, the outlet temperature is 130 ℃, and the pump pressure is 1.2 MPa;
the material components are, by mass percent, 12% of liquid glass, 45% of deionized water, 16% of inorganic rare earth light conversion agent and 27% of ceramic microspheres;
(2) premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, plasticizer and antioxidant uniformly, then continuously mixing uniformly, extruding and granulating at 175 ℃ by using a screw machine, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect; the matrix resin is polyethylene; the plasticizer is dibutyl phthalate; the antioxidant is antioxidant 1076; in the film blowing process of the film blowing machine, the melting temperature is 185 ℃, and the die head temperature is 165 ℃;
the light conversion coating comprises the following raw material components, by mass, 1% of a composite inorganic rare earth light conversion agent, 95% of matrix resin, 3% of a plasticizer and 1% of an antioxidant.
Example 3
(1) Mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 2 hours, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, washing the particles for 4 times by using absolute ethyl alcohol after collecting the particles, heating and drying for 1 hour at 115 ℃, and fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass to prepare the composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are silicon carbide ceramic microspheres; in the spray granulation process, the temperature of a heat source of the pressure spray dryer is 195 ℃, the outlet temperature is 150 ℃, and the pump pressure is 1.8 MPa;
the material components are, by mass percent, 14% of liquid glass, 39% of deionized water, 18% of inorganic rare earth light conversion agent and 29% of ceramic microspheres;
(2) premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, plasticizer and antioxidant uniformly, then continuously mixing uniformly, extruding and granulating at 175 ℃ by using a screw machine, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect; the matrix resin is polyethylene; the plasticizer is diethyl phthalate; the antioxidant is antioxidant 164; in the film blowing process of a film blowing machine, the melting temperature is 195 ℃ and the die head temperature is 175 ℃;
the light conversion coating comprises the following raw material components, by mass, 2% of a composite inorganic rare earth light conversion agent, 93% of matrix resin, 3% of a plasticizer and 2% of an antioxidant.
Example 4
(1) Mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 1h, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, collecting particles, washing for 2 times by using absolute ethyl alcohol, heating and drying for 2h at 100 ℃, fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass, and preparing the composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are lithium silicate ceramic microspheres; in the spray granulation process, the heat source temperature of the pressure spray dryer is 180 ℃, the outlet temperature is 120 ℃, and the pump pressure is 1 MPa;
the material components are, by mass percent, 10% of liquid glass, 50% of deionized water, 15% of inorganic rare earth light conversion agent and 25% of ceramic microspheres;
(2) premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, plasticizer and antioxidant uniformly, then continuously mixing uniformly, extruding and granulating at 175 ℃ by using a screw machine, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect; the matrix resin is polyethylene; the plasticizer is dimethyl phthalate; the antioxidant is antioxidant CA; in the film blowing process of a film blowing machine, the melting temperature is 180 ℃, and the die head temperature is 160 ℃;
the light conversion coating comprises the following raw material components, by mass, 1% of a composite inorganic rare earth light conversion agent, 95% of matrix resin, 2% of a plasticizer and 2% of an antioxidant.
Example 5
(1) Mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 2 hours, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, washing the particles for 4 times by using absolute ethyl alcohol after collecting the particles, heating and drying for 1 hour at 120 ℃, and fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass to prepare the composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are alumina ceramic microspheres; in the spray granulation process, the heat source temperature of the pressure spray dryer is 200 ℃, the outlet temperature is 160 ℃, and the pump pressure is 2 MPa;
the material components are, by mass percent, 15% of liquid glass, 35% of deionized water, 20% of inorganic rare earth light conversion agent and 30% of ceramic microspheres;
(2) premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, plasticizer and antioxidant uniformly, then continuously mixing uniformly, extruding and granulating at 175 ℃ by using a screw machine, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect; the matrix resin is polyethylene; the plasticizer is dipropyl phthalate; the antioxidant is antioxidant DNP; in the film blowing process of a film blowing machine, the melting temperature is 200 ℃, and the die head temperature is 180 ℃;
the light conversion coating comprises the following raw material components, by mass, 2% of a composite inorganic rare earth light conversion agent, 92% of matrix resin, 4% of a plasticizer and 2% of an antioxidant.
Comparative example 1
In comparative example 1, liquid glass and ceramic microspheres are not added, and other conditions are the same as those in example 5, so that the inorganic rare earth light conversion agent cannot be loaded and fixed on the ceramic microspheres, and the dispersibility and light transmittance of the inorganic rare earth light conversion agent are affected, and the light conversion durability is poor.
Examples 1-5, comparative example 1 were blown to a polyethylene film thickness of 0.035mm for use in corn pilot fields. The films of examples 1-5 have good moisture retention and heat preservation properties, and the growth of corn is obviously accelerated, which shows that the invention has good performance of converting ultraviolet light into red light, promotes heat preservation and moisture preservation, and improves the utilization rate of light. The qualitative test method comprises the following steps:
excitation of red fluorescence intensity: the light conversion performance is measured by a Hitachi F4500 type fluorescence spectrometer, the slit is 2.5nm/2.5m, the voltage of a photomultiplier tube is 700V, the scanning speed is 60nm/min, and violet light (lambda)ex279nm) as excitation light at λexAnd (3) monitoring exciting light at 635nm (red light), testing the intensity of red fluorescence converted after absorbing purple light, sampling in a test field, and testing the intensity of the excited red fluorescence 6 months after 3 months respectively to represent the light conversion effect of the light conversion agricultural film. As in table 1.
Table 1:
Claims (9)
1. a preparation method of a plastic light conversion agricultural film with a lasting light conversion effect is characterized by comprising the following specific steps:
(1) mixing liquid glass and deionized water, fully stirring to form a uniform system, adding an inorganic rare earth light conversion agent and ceramic microspheres into the system, soaking for 1-2 hours, uniformly stirring to prepare slurry, transferring the slurry into a pressure spray dryer for spray granulation, collecting particles, washing for 2-4 times by using absolute ethyl alcohol, heating and drying for 1-2 hours at 100-120 ℃, and fixing the inorganic rare earth light conversion agent on the surfaces of the ceramic microspheres through the solidification process of the liquid glass to prepare a composite inorganic rare earth light conversion agent; the glass-ceramic composite material comprises the following raw material components, by mass, 10-15% of liquid glass, 35-50% of deionized water, 15-20% of an inorganic rare earth light conversion agent and 25-30% of ceramic microspheres;
(2) and (2) uniformly premixing the composite inorganic rare earth light conversion agent prepared in the step (1) with matrix resin, a plasticizer and an antioxidant, continuously uniformly mixing, extruding and granulating, and blowing a film by using a film blowing machine to obtain the plastic light conversion agricultural film with a lasting light conversion effect.
2. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: the inorganic rare earth light conversion agent in the step (1) is at least one of rare earth ion doped alkaline earth aluminate, oxide, sulfide, tungstate and silicate.
3. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: the ceramic microspheres in the step (1) are at least one of alumina ceramic microspheres, silica ceramic microspheres, silicon carbide ceramic microspheres and lithium silicate ceramic microspheres, and the particle size of the particles is 3-8 μm.
4. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: in the spray granulation process in the step (1), the temperature of a heat source of a pressure spray dryer is 180-200 ℃, the temperature of an outlet is 120-160 ℃, and the pump pressure is 1-2 MPa.
5. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: and (3) the matrix resin in the step (2) is one of polyethylene, polypropylene and polyvinyl chloride.
6. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: the plasticizer in the step (2) is at least one of dipropyl phthalate, dibutyl phthalate, diethyl phthalate and dimethyl phthalate, and the antioxidant is at least one of antioxidant 1010, antioxidant 1076, antioxidant 164, antioxidant CA, antioxidant DNP and antioxidant TPP.
7. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: and (3) in the film blowing process of the film blowing machine in the step (2), the melting temperature is 180-200 ℃, and the die head temperature is 160-180 ℃.
8. The method for preparing the plastic light conversion agricultural film with durable light conversion effect according to claim 1, which is characterized in that: the raw material components in the step (2) are, by mass, 1-2% of a composite inorganic rare earth light conversion agent, 92-95% of matrix resin, 2-4% of a plasticizer and 1-2% of an antioxidant.
9. A plastic light conversion agricultural film with a durable light conversion effect, which is prepared by the method of any one of claims 1 to 8.
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