Preparation method of nanometer light-converting shed plastic film for kiwifruit planting

A kiwifruit and nano-technology, which is applied in the field of preparation of kiwifruit nano-light conversion film, can solve the problems of insufficient utilization of luminous efficiency, inability to synchronize the application cycle of the film, and the decline of physical and mechanical properties of the film, so as to achieve stable physical and mechanical properties , good light conversion stability and increased yield

Inactive Publication Date: 2019-11-19
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because kiwi fruit requires a warm and humid climate during the growth process, most of the currently used shed films are ordinary polyethylene or polyvinyl chloride plastic films, which mainly play a role in heat preservation. During the use of the shed film, it receives sunlight during the day to heat up the shed. Convection heat dissipation and cooling to avoid air flow, so that the shed can be heated by light and closed for heat preservation; but at night or in rainy weather, there is no external heat supplement in the shed, and the temperature inside the shed is higher than the external temperature. All the stored heat is radiated outward in the form of "infrared radiation", causing a large amount of heat to be lost and the temperature to drop rapidly
Large temperature fluctuations are extremely unfavorable to the growth of kiwifruit, directly affecting its yield and quality; the light-changing film that appears on the market absorbs the ultraviolet light that is h

Method used

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  • Preparation method of nanometer light-converting shed plastic film for kiwifruit planting
  • Preparation method of nanometer light-converting shed plastic film for kiwifruit planting
  • Preparation method of nanometer light-converting shed plastic film for kiwifruit planting

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Experimental program
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Effect test

Embodiment 1

[0037] 3-[(3,5-di-tert-butyl-4-hydroxy)phenyl]propanoyl phosphate dioctadecyl is 3-(3-tert-butyl-4-hydroxy-phenyl)propionate methyl ester, Diethyl phosphite and octadecyl alcohol are used as raw materials, and are obtained through diazotization coupling, reduction, and esterification; for details, see "Synthesis and Performance Evaluation of an Intramolecular Composite Antioxidant" "Fine Chemical Industry", July 2008 Monthly Volume 25 Issue 7.

[0038] A kind of preparation method of kiwifruit nano light conversion rain shelter film, according to the following steps:

[0039] Step 1. Preparation of modified masterbatch

[0040] A, Zingerone, dehydrozingerone, 3-[(3,5-di-tert-butyl-4-hydroxyl) phenyl] propanoyl phosphate dioctadecyl, according to the mass ratio of the amount of 1:1.5:1.5 Add the proportion of the above-mentioned additives into the PET matrix material, and then use the granulator to extrude after mixing evenly, and air-cooled granulation to make the modified m...

Embodiment 2

[0053] A kind of preparation method of kiwifruit nano light conversion rain shelter film, according to the following steps:

[0054] Step 1. Preparation of modified masterbatch

[0055] A, Zingerone, dehydrozingerone, 3-[(3,5-di-tert-butyl-4-hydroxyl) phenyl] propanoyl phosphate dioctadecyl, according to the mass ratio of the amount of 1:1.5:1 The ratio of the above-mentioned additives is added to the PVC base material, and after stirring and mixing evenly, it is extruded by a granulator, and air-cooled and granulated to make a modified master batch primary body, wherein the total mass of the above-mentioned additives accounts for 6% of the modified master batch primary body;

[0056] B. According to the mass volume ratio of ZnO and hydrochloric acid 1:300 (g / mL), take nano-ZnO and add it to 0.1mol / L hydrochloric acid solution and stir to obtain the soaking solution, and put the prepared modified master batch into the soaking solution After soaking for 40 minutes, wash with m...

Embodiment 3

[0064] A kind of preparation method of kiwifruit nano light conversion rain shelter film, according to the following steps:

[0065] Step 1. Preparation of modified masterbatch

[0066] A, Zingerone, dehydrozingerone, 3-[(3,5-di-tert-butyl-4-hydroxyl) phenyl] propanoyl phosphate dioctadecyl, according to the mass ratio of the amount of 1:1:2 The ratio of the above-mentioned additives is added to the CPP matrix material, stirred and mixed evenly, extruded by a granulator, air-cooled and granulated to make a modified master batch primary body, wherein the total mass of the above-mentioned additives accounts for 4% of the modified master batch primary body;

[0067] B. According to the mass volume ratio of ZnO and hydrochloric acid 1:250 (g / mL), take nano-ZnO and add it to 0.1mol / L hydrochloric acid solution and stir to obtain the soaking solution, and put the prepared modified master batch into the soaking solution After soaking for 40 minutes, wash with methanol, and dry at 60...

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Abstract

The invention relates to a preparation method of a nanometer light-converting shed plastic film for kiwifruits, wherein the preparation method sequentially comprises: modified master batch preparationand nanometer light-converting shed plastic film synthesis. According to the present invention, the nanometer light-converting shed plastic film prepared by the method has characteristics of good gloss and good uniformity, can inhibit the deliquescence of light-converting agents, has a prolonged service life, and still has a good light-converting effect after use for 9 months, wherein the conversion emission spectrum is maximally close to the absorption spectrum of kiwifruits, such that the sunlight absorption and utilization of kiwifruits is enhanced, the phenomenon of infrared radiation isavoided, and the temperature difference between day and night in the shed is low so as to increase the yield of red-fleshed kiwifruits, wherein the yield is up to 5102 kg/mu, and the yield is increased by 28.13%; and the fruit quality is improved, the soluble sugar content is 14.86%, the titratable acid content reaches 2.89%, and the vitamin C content reaches 2098.52 mg/kg.

Description

technical field [0001] The invention belongs to the technical field of agricultural films, and in particular relates to a preparation method of a kiwifruit nano light conversion film. Background technique [0002] Kiwi fruit is a fresh and tender fruit with rich nutrition and delicious flavor. The phenological period of kiwifruit is from March to November, of which September to November is the fruit ripening period. It is suitable for growing in an environment with sufficient sunlight and fertile soil, and is not suitable for high temperature or cold environments. Its growth requires a warm and humid climate. In addition to not being resistant to drought, kiwifruit is also afraid of waterlogging. In recent years, kiwifruit has been planted with rain-shelter cultivation technology. Compared with the outdoor cultivation mode, rain-shelter cultivation is not only convenient for management, but also ensures that kiwifruit is not affected by climate, diseases and insect pests du...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L27/06C08L23/12C08L23/30C08K13/06C08K5/526C08K5/132C08K3/22C08K3/36C08K9/06C08K9/04C08J5/18C08J3/22A01G9/14
CPCA01G9/1438C08J3/226C08J5/18C08J2323/12C08J2327/06C08J2367/02C08J2423/12C08J2427/06C08J2467/02C08K3/36C08K5/132C08K5/526C08K9/04C08K9/06C08K13/06C08K2003/2206C08K2201/011Y02A40/25
Inventor 张文林唐建民廖钦洪兰建彬廖林正吴中军李哲馨
Owner CHONGQING UNIV OF ARTS & SCI
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