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
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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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