Greenhouse covering film material easy to clean, preparation method and cleaning method

A cover film and easy-to-clean technology, applied in cleaning methods and utensils, cleaning methods using liquids, botany equipment and methods, etc., can solve problems such as dust pollution on the surface of greenhouse cover films

Active Publication Date: 2021-04-23
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of dust pollution on the surface of the greenhouse covering film in the background technology, and provides a low-cost, high-efficiency, convenient and universal greenhouse covering film cleaning technology

Method used

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  • Greenhouse covering film material easy to clean, preparation method and cleaning method
  • Greenhouse covering film material easy to clean, preparation method and cleaning method
  • Greenhouse covering film material easy to clean, preparation method and cleaning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of easy-to-clean greenhouse cover film material:

[0039] The plant polyphenol solution and the metal ion solution are used as the stock solution, and are sprayed on the surface of the greenhouse covering film body to complete the first spraying; and the second spraying is performed with the stabilizer solution.

[0040] Wherein, the concentration ratio of the plant polyphenols to metal ions is 4:1-4:4; the pH of the stabilizer solution used is 6.0-9.0; the plant polyphenols include but not limited to tannic acid, black wattle tannin , oak tannin, bayberry tannin any one or more; the metal ion includes but not limited to aluminum (Al), iron (Fe), zinc (Zn), cerium (Ce), ytterbium (Yb), Any one or more of samarium (Sm).

[0041] The main base material of the greenhouse covering film is a commercially available greenhouse covering film organic polymer plastic film material and greenhouse glass material, including but not limited to polyethylene (PE), polyolef...

Embodiment 2

[0043] Testing the Optical Transmission of Easy-Clean Greenhouse Cover Films:

[0044] (1) Determination of optical properties of different types of polyphenol-metal complexes on the same substrate greenhouse film body:

[0045] The substrate is polyolefin (PO) film, and the polyphenol in the polyphenol-metal complex is myrica rubra tannin BT. The composition of each sample is shown in Table 1.

[0046] Table 1

[0047] .

[0048] The optical transmittance test was carried out on the above samples 1-sample 7 and the PO film of the greenhouse cover film body. The test results are as follows: figure 1 shown. figure 1 (a) is the solar light transmittance spectrum of 7 kinds of easy-to-clean greenhouse covering films based on polyolefin PO and the untreated greenhouse covering film body PO film at a wavelength of 250-2500 nm, (b) is Comparison of the light transmittance of 7 kinds of easy-to-clean greenhouse covering films based on polyolefin PO and the untreated greenhouse ...

Embodiment 3

[0057] Easy-to-clean greenhouse cover film dust pollution test, cleaning test and long-lasting dust-proof test:

[0058] (1) Dust pollution experiment of easy-to-clean greenhouse cover film

[0059] Sample 1 in Example 2: PO+BT+Fe 3+ The easy-to-clean greenhouse cover film was cut into 10 × 10 cm samples, placed on the sample stage of the dust deposition room, turned on the power of the air blowing pump, and carried out the dust deposition experiment for 5 minutes. The test system was as follows: Figure 4 shown.

[0060] The dust is common air dust particles in daily life.

[0061] (2) Dust cleaning experiment of easy-to-clean greenhouse cover film

[0062] After the above-mentioned easy-to-clean greenhouse cover film is deposited by dust pollution, rinse the polluted greenhouse cover film with a cleaning agent (hydrochloric acid solution with a pH of 3.0), and then rinse off the excess cleaning agent with clean water, and then the easy-to-clean greenhouse cover film can b...

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Abstract

The invention belongs to the technical field of preparation of greenhouse covering film materials and system design of the greenhouse covering film materials, and particularly discloses a greenhouse covering film material easy to clean, a preparation method and a cleaning method. An outer layer of a greenhouse covering film easy to clean is composed of a polyphenol-metal nano-particle thin film, has good optical transmittance, and does not affect the optical performance of an original greenhouse covering film body film; and the thin film is small in mass and good in biocompatibility, does not corrode or damage the surfaces of a greenhouse covering film and a greenhouse covering glass body, and can be used on a large scale. The prepared polyphenol-metal nano-particle thin film can prevent dust from being directly deposited on the surfaces of the greenhouse covering film and greenhouse covering glass; and when the light transmittance of the greenhouse covering film becomes poor due to the dust deposition amount, the nano-particle thin film formed by plant polyphenol and metal ions can be dissociated by spraying a cleaning agent and washing with clear water, and meanwhile, the dust adhered to the nano-particle thin film is removed together, so that the greenhouse covering film is easy to clean.

Description

technical field [0001] The invention relates to the technical field of greenhouse covering film material preparation and system design thereof, in particular to an easy-to-clean greenhouse covering film material, a preparation method and a cleaning method. Background technique [0002] In recent years, the area of ​​my country's modern greenhouses is constantly expanding, and the level of science and technology is also increasing. At present, my country has achieved gratifying results in greenhouse planting: the area of ​​facilities above large and medium arch sheds in the country has reached 3.7 million hectares (55.5 million mu), accounting for 80% of the world's facility horticulture area. The development and promotion of greenhouses have brought huge economic benefits to farmers and greatly improved their income levels. There are many types of greenhouses in my country, which are divided into glass greenhouses, PC solar panel greenhouses, plastic film greenhouses, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/14B08B3/02B08B3/08B29D7/01
CPCA01G9/1438B29D7/01B08B3/08B08B3/02Y02A40/25
Inventor 郭俊凌何云翔王晓玲杨其长杨晓
Owner SICHUAN UNIV
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