A PET light conversion curtain and a preparation method thereof

Abstract

The application provides a PET light conversion curtain and a preparation method thereof, and belongs to the technical field of agricultural polymer compound materials. The PET light conversion curtain has a single-layer net weaving structure. The raw materials of the PET light conversion curtain strip include base PET resin, bis(dioctyl pyrophosphoric acyloxy) titanium acid ester, 2-selenium-3-methyl benzothiazole, polycarbonate, light conversion functional master batch, plasticizer and lubricant. The light conversion functional master batch includes the following raw materials: nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexyl amine) perylene diimide, polyethylene terephthalate-1,4-cyclohexane dimethyl ester and europium trichloride. The preparation raw materials of the nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexyl amine) perylene diimide include 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride, perfluorotrihexyl amine and 4-biphenyl boronic acid. The PET light conversion curtain provided by the application has low O2 and CO2 permeation coefficients, and can improve the photosynthesis efficiency of crops.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural polymer compound materials, and particularly relates to a PET light conversion curtain and a preparation method thereof. BACKGROUND

[0002] In agricultural production, light conditions play a crucial role in the growth and development of crops. Sunlight contains multiple wavelengths of light, but the utilization efficiency of different wavelengths of light by photosynthesis in plants is different. Generally, plants have low utilization efficiency for green light and purple light, while the red and blue bands are the key bands required for photosynthesis in plants. Traditional agricultural covering materials cannot effectively adjust the spectrum of sunlight, resulting in low light energy utilization efficiency and limiting the improvement of crop yield and quality.

[0003] The emergence of light conversion film provides a way to solve this problem. By adding light conversion agents, the low-efficiency wavelength band in sunlight can be converted into the high-efficiency wavelength band required by plants, thereby enhancing photosynthesis in plants. However, the existing light conversion agents have many problems. Some light conversion agents have low light conversion efficiency and cannot fully meet the growth needs of plants. Some light conversion agents have poor stability and are easily degraded under the influence of environmental factors such as light and temperature, resulting in a decrease in light conversion performance. In addition, the compatibility of light conversion agents with the base material is poor, and agglomeration easily occurs during processing, affecting the overall performance of the material.

[0004] PET material is widely used in the field of agricultural films. Although it has good mechanical properties and certain optical properties, it has a certain permeability to oxygen and carbon dioxide. In the application scenario of light conversion film, the penetration of oxygen and carbon dioxide will accelerate the aging of the light conversion agent and shorten the service life of the light conversion film, thereby increasing the cost of agricultural production. SUMMARY

[0005] In order to solve the above-mentioned problems in the prior art, the present application provides a PET light conversion curtain, which achieves the following purposes: solving the problems of low light conversion efficiency, poor stability and high oxygen and carbon dioxide permeability of the existing light conversion film, and providing a PET light conversion curtain with high light conversion rate, high oxidation resistance and low oxygen and carbon dioxide permeability, and a preparation method thereof.

[0006] To achieve the above-mentioned purposes, the technical solutions adopted are as follows:

[0007] The present application provides a PET light conversion curtain, which is prepared from the following raw materials in parts by weight: base PET resin 90-115 parts, bis(dioctyl pyrophosphoryloxy) titanium acid ester 3-6 parts, 2-seleno-3-methyl benzothiazole 2-5 parts, polycarbonate 9-16 parts, light conversion functional masterbatch 12-20 parts, plasticizer 4-7 parts, and lubricant 3-7 parts.

[0008] As a preferred embodiment, the base PET resin is one or a combination of polyethylene terephthalate, polyethylene naphthalate, polyethylene furandicarboxylate, polyethylene terephthalate-polyethylene 1,4-cyclohexane dicarboxylate.

[0009] As a preferred embodiment, the base PET resin is polyethylene terephthalate.

[0010] The lubricant is one or a combination of stearic acid, zinc stearate, lead stearate, magnesium stearate, barium stearate, cadmium stearate, aluminum stearate, sodium stearate, diglycerol stearate, triglycerol stearate, oleic acid amide, stearic acid amide, ethylene bis-stearic acid amide, ethylene bis-oleic acid amide.

[0011] As a preferred embodiment, the lubricant is ethylene bis-oleic acid amide.

[0012] The plasticizer is one or a combination of diisooctyl adipate, dibutyl phthalate, dioctyl phthalate, glutarate, adipate, azelaic acid ester, sebacic acid ester, trimellitic anhydride, epoxy soybean oil, epoxy linseed oil, castor oil.

[0013] As a preferred embodiment, the plasticizer is epoxy linseed oil.

[0014] The light conversion functional masterbatch is prepared from the following raw materials in parts by weight: nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamine) perylene diimide 3-7 parts, polyethylene terephthalate-1,4-cyclohexane dimethanol (PETG) 10-18 parts, europium trichloride (EuCl3) 1-4 parts.

[0015] The nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamine) perylene diimide is prepared from the following raw materials in parts by weight: 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride (1,7-dibromo-PTCDA) 10-15 parts, perfluorotrihexylamine 25-32 parts, 4-biphenyl boronic acid 19-24 parts.

[0016] The application also provides a preparation method of the PET light conversion curtain, comprising the following steps:

[0017] I. Preparation of light conversion functional masterbatch

[0018] 1. Under argon protection, 1,7-dibromo-PTCDA and perfluorotrihexylamine are dissolved in DMF, and imidazole is added for reflux reaction, the reflux reaction time is 8-12 h, and the reaction temperature is 140-150℃. After 8-12 h of reaction, the reaction liquid is poured into ice ethanol at <-5℃ for precipitation, centrifuged, and the solid is collected; the solid is washed with acetone and n-hexane in sequence, and then vacuum dried to obtain N,N'-di(perfluorotrihexylamino)-1,7-dibromoperylene diimide.

[0019] DMF as a solvent does not participate in the reaction, and its amount is 5 times the mass of perfluorotrihexylamine; imidazole as a catalyst, its amount is 0.2-0.5% of the mass of perfluorotrihexylamine.

[0020] 2. N,N'-di(perfluorotrihexylamino)-1,7-dibromoperylene diimide and 4-biphenylboronic acid are added to a toluene / ethanol mixed solvent, and then FeCl3 / IMes.HCl catalyst is added, and 2 mol / L K2CO3 solution is used as an auxiliary aqueous phase, and stirred for 12-16 h, and the reaction temperature is 90-95℃. After 12-16 h of reaction, stop stirring first, and stand until the two phases are layered, and retain the upper organic phase. The upper organic phase is washed with water and rotary evaporated to obtain solid product 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide; the rotary evaporation temperature is 50℃, and the vacuum degree is <-0.08 MPa.

[0021] In the toluene / ethanol mixed solvent, the mass ratio of toluene to ethanol is 4:1. The toluene / ethanol mixed solvent and K2CO3 solution do not participate in the reaction, and their amounts are the same, both being 5 times the mass of perfluorotrihexylamine. The amount of FeCl3 / IMes.HCl catalyst is 0.4-0.9% of the mass of 4-biphenylboronic acid; the FeCl3 / IMes.HCl catalyst composition includes FeCl3 and 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride, and the mass ratio of FeCl3 to 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride is 1:(2.1-3.8).

[0022] 3. The 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide obtained by the above reaction is dissolved in supercritical CO2, and is rapidly reduced to normal pressure through a flow-limiting nozzle, and then the nanoparticles are collected, and after drying, nanosized 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide is finally obtained.

[0023] 4. Nanosized 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide, PETG, and EuCl3 are melt-compounded for 20-30 min, and the compounding temperature is 255-265℃, and after granulation and drying, a light conversion functional masterbatch is obtained.

[0024] II. Preparation of PET light conversion curtain strip

[0025] The base PET resin, bis (dioctyl pyrophosphoric acyl oxygen) ethylene titanate, 2-seleno-3-methyl benzothiazole, polycarbonate, light conversion functional masterbatch, plasticizer, lubricant are mixed uniformly, and are added into a double screw extruder to extrude the light conversion curtain strip. The temperature of the extruder is controlled, the die temperature is 260~275℃, the screw rotation speed is 300r / min, the extrusion pressure is 19~22MPa, and the thickness of the light conversion curtain strip is 0.05mm.

[0026] III. Woven curtain

[0027] The light conversion curtain strip is introduced into a weaving device for grid-shaped weaving, and by adjusting the weaving device parameters, the PET light conversion curtain with different pore sizes can be obtained.

[0028] The beneficial effects of the present application are as follows:

[0029] The present application realizes that the tensile strength of the PET light conversion curtain reaches 58.6~60.2MPa, which is more than 30% higher than that of the ordinary PET film, the O2 and CO2 transmission coefficients of the PET light conversion curtain strip are more than 55% lower than those of the ordinary PET film, which can effectively slow down the oxidation of the light conversion agent, the 2200h weathering tensile retention rate is more than 89%, which can effectively prolong the service life of the light conversion curtain. The PET light conversion curtain provided by the present application can significantly improve the photosynthesis efficiency of crops and provide more sufficient effective light for crop growth. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0031] Example 1: A PET light conversion curtain

[0032] A PET light conversion curtain, the preparation raw materials include, by weight: base PET resin 100 parts, bis (dioctyl pyrophosphoric acyl oxygen) ethylene titanate 3 parts, 2-seleno-3-methyl benzothiazole 5 parts, polycarbonate 12 parts, light conversion functional masterbatch 14 parts, plasticizer 4 parts, lubricant 7 parts.

[0033] The base PET resin is polyethylene terephthalate;

[0034] The plasticizer is selected from epoxy linseed oil;

[0035] The lubricant is selected from ethylene bisoleic acid amide;

[0036] The light conversion functional master batch is prepared from the following raw materials in parts by weight: nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide 4 parts, PETG 13 parts, EuCl3 3 parts;

[0037] The nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide is prepared from the following raw materials in parts by weight: 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride 12 parts, perfluorotrihexylamine 32 parts, 4-biphenyl boronic acid 24 parts.

[0038] A preparation method of a PET light conversion curtain, comprising the following steps:

[0039] Step one, preparing a light conversion functional master batch

[0040] S1, under argon protection, 1,7-dibromo-PTCDA and perfluorotrihexylamine are dissolved in DMF, and imidazole is added for reflux reaction, the reflux reaction time is 8h, and the reaction temperature is 140℃. After 8h of reaction, the reaction liquid is poured into ice ethanol of <-5℃ for precipitation, centrifuged, and the solid is collected; the solid is washed with acetone and n-hexane in sequence, and then vacuum dried to obtain N,N'-di(perfluorotrihexylamino)-1,7-dibromoperylene diimide.

[0041] DMF as a solvent does not participate in the reaction, and the amount thereof is 5 times the mass of perfluorotrihexylamine; imidazole as a catalyst, and the amount thereof is 0.3% of the mass of perfluorotrihexylamine.

[0042] S2, N,N'-di(perfluorotrihexylamino)-1,7-dibromoperylene diimide and 4-biphenyl boronic acid are added to a toluene / ethanol mixed solvent, and then FeCl3 / IMes.HCl catalyst is added, 2mol / L K2CO2 solution is used as an auxiliary aqueous phase, and stirring reaction is carried out for 12h, the reaction temperature is 95℃, and the mass ratio of toluene to ethanol is 4:1. After 12h of reaction, stirring is stopped first, and then the two phases are separated, and the upper organic phase is reserved. The upper organic phase is washed with water and rotary evaporated to obtain solid product 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamino) perylene diimide; the rotary evaporation temperature is 50℃, and the vacuum degree is <-0.08MPa.

[0043] The toluene / ethanol mixed solvent and the K2CO3 solution do not participate in the reaction, and the amount of the two is the same, which is 5 times the mass of the perfluorotrihexylamine; in the toluene / ethanol mixed solvent, the mass ratio of toluene to ethanol is 4:1; the amount of the FeCl3 / IMes.HCl catalyst is 0.5% of the mass of 4-biphenylboronic acid; the raw materials of the FeCl3 / IMes.HCl catalyst include FeCl3 and 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride, and the mass ratio of FeCl3 to 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride is 1:2.1.

[0044] S3, dissolving the product obtained by the above reaction in supercritical CO2 (35°C, 10 MPa), rapidly reducing to normal pressure through a flow-limiting nozzle, collecting nanoparticles, and finally obtaining nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamine) perylene diimide after drying.

[0045] S4, melt compounding nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylamine) perylene diimide, PETG, and EuCl3 for 20 min, the compounding temperature is 255°C, and after granulation and drying, a light conversion functional masterbatch is obtained.

[0046] Step two, preparing a PET light conversion curtain strip

[0047] Mixing the base PET resin, bis(dioctylpyrophosphoryloxy) ethylene titanate, 2-seleno-3-methylbenzothiazole, polycarbonate, light conversion functional masterbatch, plasticizer, and lubricant uniformly, adding them into a double-screw extruder, and extruding the light conversion curtain strip. The temperature of the extruder die is controlled at 260°C, the screw rotation speed is 300 r / min, the extrusion pressure is 19 MPa, and the thickness of the light conversion curtain strip is 0.05 mm.

[0048] Step three, weaving the curtain

[0049] Introducing the light conversion curtain strip into a weaving device for grid-shaped weaving, and obtaining a PET light conversion curtain with a pore size of 0.5 mm.

[0050] Example 2: A PET light conversion curtain

[0051] A PET light conversion curtain, the preparation raw materials of which include, by weight: base PET resin 115 parts, bis(dioctylpyrophosphoryloxy) ethylene titanate 6 parts, 2-seleno-3-methylbenzothiazole 2 parts, polycarbonate 16 parts, light conversion functional masterbatch 12 parts, plasticizer 7 parts, and lubricant 5 parts.

[0052] The base PET resin is polyethylene naphthalate;

[0053] The plasticizer is diisooctyl adipate;

[0054] The lubricant is selected from stearic acid triglyceride;

[0055] The preparation raw materials of the light conversion functional masterbatch include, by weight: 7 parts of nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylammonium) perylene diimide, 18 parts of PETG, and 34 parts of EuCl3.

[0056] The preparation raw materials of the nano 1,7-di(4-biphenyl)-N,N'-di(perfluorotrihexylammonium) perylene diimide include, by weight: 15 parts of 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride (1,7-dibromo-PTCDA), 30 parts of perfluorotrihexylamine, and 19 parts of 4-biphenylboronic acid.

[0057] A preparation method of a PET light conversion curtain includes the following steps:

[0058] Step one, preparation of light conversion functional masterbatch

[0059] In the S1 operation, the reaction temperature is 150°C, the reflux time is 12h, and the imidazole is added in an amount of 0.5% of the mass of perfluorotrihexylamine; in the S2 operation, the stirring reaction time is 16h, the reaction temperature is 90°C, and the FeCl3 / IMes.HCl catalyst is added in an amount of 0.9% of the mass of 4-biphenylboronic acid; in the toluene / ethanol mixed solvent, the mass ratio of toluene to ethanol is 6:1; in the FeCl3 / IMes.HCl catalyst, the mass ratio of FeCl3 to 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride is 1:3.8; in the banbury compounding and granulation operation, the banbury time is 30min, and the banbury temperature is 265°C; and the remaining operations are the same as those in step one of Example 1.

[0060] Step two, preparation of PET light conversion curtain strip

[0061] The extruder die temperature is controlled at 275°C, the extrusion pressure is 22MPa, and the light conversion curtain strip thickness is 0.05mm; and the remaining operations are the same as those in step two of Example 1.

[0062] Step three, weaving the curtain

[0063] The light conversion curtain strip is introduced into the weaving equipment for grid weaving, and a PET light conversion curtain with a pore size of 0.2mm is obtained.

[0064] Example 3: A PET light conversion curtain

[0065] A PET light conversion curtain, the preparation raw materials include, by weight: 90 parts of base PET resin, 4 parts of bis(dioctylpyrophosphato) ethylene titanate, 4 parts of 2-seleno-3-methylbenzothiazole, 9 parts of polycarbonate, 20 parts of light conversion functional masterbatch, 5 parts of plasticizer, and 3 parts of lubricant.

[0066] The base PET resin is polyethylene furandicarboxylate;

[0067] The plasticizer is dioctyl phthalate;

[0068] The lubricant is stearic acid diglyceride;

[0069] The light conversion functional masterbatch is prepared from 3 parts of nano 1,7-bis(4-biphenyl)-N,N'-bis(perfluorotrihexylammonium) perylene diimide, 10 parts of PETG, and 1 part of EuCl3.

[0070] The nano 1,7-bis(4-biphenyl)-N,N'-bis(perfluorotrihexylammonium) perylene diimide is prepared from 10 parts of 1,7-dibromo-3,4,9,10-perylene tetracarboxylic dianhydride (1,7-dibromo-PTCDA), 25 parts of perfluorotrihexylamine, and 22 parts of 4-biphenylboronic acid.

[0071] A preparation method of a PET light conversion curtain, comprising the following steps:

[0072] Step one, preparing a light conversion functional masterbatch

[0073] In the S1 operation, the reflux time is 12 h, and the imidazole is added in an amount of 0.2% of the mass of the perfluorotrihexylamine; in the S2 operation, the stirring reaction time is 16 h, and the FeCl3 / IMes.HCl catalyst is used in an amount of 0.4% of the mass of the 4-biphenylboronic acid, and the mass ratio of FeCl3 to 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride in the FeCl3 / IMes.HCl catalyst is 1:2.5; in the banburying and granulating operation, the banburying time is 30 min, and the banburying temperature is 255°C; and the remaining operations are the same as those in step one of Example 1.

[0074] Step two, preparing a PET light conversion curtain strip

[0075] The extruder die temperature is controlled at 260°C, the extrusion pressure is 22 MPa, and the light conversion curtain strip has a thickness of 0.05 mm; and the remaining operations are the same as those in step two of Example 1.

[0076] Step three, weaving the curtain

[0077] The light conversion curtain strip is introduced into a weaving device for grid weaving, and a PET light conversion curtain with a pore size of 2 mm is obtained.

[0078] Performance test

[0079] (I) Material test

[0080] The PET light conversion curtain strips prepared in Examples 1-3 are subjected to material performance tests, and the test methods are as follows.

[0081] Mechanical properties, according to "Determination of tensile properties of plastics - Part 3: test conditions for films and sheets" (GB / T1040.3-2006) to test tensile strength, elongation at break.

[0082] Gas permeability, according to "Plastics - Determination of gas transmission rate - Pressure difference method" (GB / T1038-2000) to test O2 and CO2 transmission coefficients.

[0083] Light conversion effect, using a fluorescence spectrometer, the light conversion performance of the light conversion curtain of examples 1-3 was measured respectively, the parameters tested were: photomultiplier tube voltage 680V, slit 2.5nm / 2.5m, scanning rate 60nm / min, excitation light wavelength 280nm, monitoring excitation light wavelength 650nm, and the fluorescence emission intensity of 650nm red light was tested.

[0084] Weather resistance, according to "7.8 Weather resistance experiment" in "Agricultural polyethylene blown shed film" (GB / T4455-2019), the light conversion curtain was aged in a xenon lamp aging oven for 2200h, and the performance retention rate was tested.

[0085] A group of ordinary PET shed films with a thickness of 0.05mm were selected as a control group for the same test, and the test results were counted. The test results are shown in Table 1.

[0086] Table 1: Performance test results of PET light conversion curtain material

[0087]

[0088] Based on the data in Table 1, it can be seen that: 1. The tensile strength of the curtain is 58.6-60.2MPa, which is more than 30% higher than that of ordinary PET film, and the elongation at break is more than 25% higher. 2. The O2 and CO2 transmission coefficients of the PET light conversion curtain strip provided by the application are 25-28cm 3 ·mm / (m 2 ·d·MPa) and 78-84cm 3 ·mm / (m 2 ·d·MPa), which is more than 55% lower than that of ordinary PET film, which can effectively slow down the oxidation of the light conversion agent and prolong the service life of the light conversion curtain. 3. The red light emission intensity is 8277-8395 a.u., and the tensile strength retention rate after 2200h weather resistance test is >89%.

[0089] (II) Agricultural application

[0090] In the same field, 4 groups of 3m*5m greenhouses are built, and the ordinary PET film and the PET light conversion curtain provided by the embodiments 1-3 of the present application are used to seal the top of each group of greenhouses, 10 pepper plants (variety "Laofengheishuai") are planted in each group of greenhouses, and the yield and growth cycle of the pepper plants are compared.

[0091] Table 2: Statistical table of agricultural application effect

[0092]

[0093] Based on the data in Table 2, it can be seen that, in terms of agricultural application, compared with the greenhouse using ordinary PET film, the yield of the greenhouse using the PET light conversion curtain is increased by 34%-39%, and the growth cycle is shortened by 13-14 days, which shows that the light conversion curtain provided by the present application can significantly improve the photosynthesis efficiency of crops.

[0094] Obviously, there are still many specific implementation methods that can be changed under the concept of the present application, and here it should be declared that any changes made under the inventive concept of the present application will fall within the scope of protection of the present application.

Claims

1. A light transforming curtain having a single layer of net-like weave, characterized in that: The raw material of the light conversion curtain includes base resin, bis (dioctyl pyrophosphoric acyloxy) ethylene titanate, 2-selenium-3-methyl benzothiazole, polycarbonate, light conversion functional masterbatch, plasticizer, lubricant; the mass ratio of the base resin, bis (dioctyl pyrophosphoric acyloxy) ethylene titanate, 2-selenium-3-methyl benzothiazole, polycarbonate, light conversion functional masterbatch, plasticizer, lubricant is (90~115) : (3~6) : (2~5) : (9~16) : (12~20) : (4~7) : (3~7) ; The preparation raw material of the light conversion functional masterbatch includes, in weight parts, nanosized 1,7-di (4-biphenyl) -N,N'-di (perfluorotrihexylamine) perylene diimide 3~7 parts, PETG 10~18 parts, EuCl3 1~4 parts; The preparation raw material of the nanosized 1,7-di (4-biphenyl) -N,N'-di (perfluorotrihexylamine) perylene diimide includes 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride, perfluorotrihexylamine, 4-biphenyl boronic acid; The base resin is any one of polyethylene terephthalate, polyethylene naphthalate, polyethylene furandicarboxylate; The plasticizer is any one of epoxy linseed oil, diisooctyl adipate, dioctyl phthalate; The lubricant is any one of ethylene bisoleic acid amide, stearic acid triglyceride, stearic acid diglyceride.

2. The light converting curtain of claim 1, wherein: The preparation raw material of the nanosized 1,7-di (4-biphenyl) -N,N'-di (perfluorotrihexylamine) perylene diimide includes, in weight parts, 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride 10~15 parts, perfluorotrihexylamine 25~32 parts, 4-biphenyl boronic acid 19~24 parts.

3. A method of making a light converting curtain according to any one of claims 1-2, characterized in that: The method comprises the steps of preparing light conversion functional masterbatch, preparing light conversion curtain strip, and weaving curtain; the light conversion curtain strip is prepared by mixing the base resin, bis (dioctyl pyrophosphoric acyloxy) ethylene titanate, 2-selenium-3-methyl benzothiazole, polycarbonate, light conversion functional masterbatch, plasticizer, and lubricant uniformly in a double-screw extruder, and extruding the light conversion curtain strip; the die temperature of the double-screw extruder is 260~275℃, and the extrusion pressure is 19~22MPa.

4. The method of claim 3, wherein: The preparation method of the light conversion functional masterbatch comprises the following steps: S1, dissolve 1,7-dibromo-3,4,9,10-perylenetetracarboxylic dianhydride and perfluorotrihexylamine in DMF, and then add imidazole for reflux reaction to obtain N,N'-di (perfluorotrihexylamine) -1,7-dibromoperylene diimide; S2, add N,N'-di (perfluorotrihexylamine) -1,7-dibromoperylene diimide, 4-biphenyl boronic acid, and FeCl3 / IMes.HCl catalyst into a toluene / ethanol mixed solvent, stir for 12~16h, and obtain solid product 1,7-di (4-biphenyl) -N,N'-di (perfluorotrihexylamine) perylene diimide; S3, dissolving 1,7-bis(4-biphenyl)-N,N'-bis(perfluorotrihexylammonium) perylene diimide in supercritical CO2, and getting nano 1,7-bis(4-biphenyl)-N,N'-bis(perfluorotrihexylammonium) perylene diimide by sudden drop to normal pressure through flow-limiting nozzle; S4, melting and compounding nano 1,7-bis(4-biphenyl)-N,N'-bis(perfluorotrihexylammonium) perylene diimide, PETG and EuCl3 to get melt, and getting light conversion functional masterbatch by granulating and drying the melt.

5. The method of claim 4, wherein: The reflux reaction has a reaction time of 8-12 h and a reaction temperature of 140-150℃; the imidazole is used in an amount of 0.2-0.5% of the mass of perfluorotrihexylamine.

6. The method of claim 4, wherein: The stirring reaction has a reaction temperature of 90-95℃; the toluene / ethanol mixed solvent has a mass ratio of toluene to ethanol of (4-6):

1.

7. The method of claim 4, wherein: The melt compounding has a compounding time of 20-30 min and a compounding temperature of 255-265℃.

8. The method of claim 4, wherein: The FeCl3 / IMes.HCl catalyst is used in an amount of 0.4-0.9% of the mass of 4-biphenylboronic acid; the FeCl3 / IMes.HCl catalyst raw material comprises FeCl3 and 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride, and the mass ratio of FeCl3 to 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride is 1:(2.1-3.8).

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