Test piece of spraying droplet density and size and preparation method thereof

A test card and density technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, instruments, and analysis by making materials undergo chemical reactions, can solve the inconvenience of carrying, the expensive particle size analyzer, and the inability to carry out Measurement and other problems, to achieve the effect of simple use and portability

Active Publication Date: 2010-04-14
河北明顺农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, particle size analyzers are relatively expensive, and they are inconvenient to carry, and cannot be measured during field spraying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Acidification of supporting paper Add oxalic acid slowly to 140 ml of absolute ethanol until pH=1.5. Put A4 copy paper weighing 80g into it and soak for 10 minutes, take it out and let it dry for later use.

[0030] (2) Dissolve 1.5 g of dimethyl yellow in 300 ml of absolute ethanol, and add oxalic acid to adjust the pH to 1.5.

[0031] (3) Add 3.0g of polyvinyl alcohol to the solution in step (2), fully dissolve it, add 90g of white carbon black with an average particle size of 100 microns, stir fully to make it evenly dispersed and keep stirring to keep it in dispersion suspension state.

[0032] (4) Coat the suspension in the dispersed suspension state with an Enducap BK-275 coater on the surface of the acidified A4 paper prepared in step (1), and the thickness of the coating after drying is about 185 microns.

[0033] (5) Cut the dried paper in step (4) to a card with a size of 10mm×20mm, bind it, and pack it.

[0034] The test card is red under the condition...

Embodiment 2

[0036] (1) Acidification of supporting paper Slowly add oxalic acid into 140 ml of absolute ethanol until pH=1.5. Put A4 copy paper weighing 80g into it and soak for 10 minutes, take it out and let it dry for later use.

[0037] (2) Dissolve 0.5 g of dimethyl yellow in 100 ml of absolute ethanol, and add oxalic acid to adjust the pH to 1.5.

[0038] (3) Add 3.0g of polyvinyl alcohol to the solution in step (2), fully dissolve and add 50g of white carbon black with an average particle size of 10 microns, stir well to make it evenly dispersed and keep stirring to keep it in dispersion suspension state.

[0039] (4) Coat the above-mentioned suspension in the state of dispersion and suspension on the surface of the acidified A4 paper prepared in step (1) with an Enducap BK-275 coating machine, and dry in the air. The thickness of the coating after drying is about 80 microns.

[0040] (5) Cut the dried paper in step (4) to a card with a size of 10mm×20mm, bind it, and pack it.

[...

Embodiment 3

[0043] (1) Acidification of supporting paper Slowly add oxalic acid into 140 ml of absolute ethanol until pH=1.5. Put A4 copy paper weighing 80g into it and soak for 10 minutes, take it out and let it dry for later use.

[0044] (2) Dissolve 10 g of bromophenol blue in 100 ml of absolute ethanol, and add oxalic acid to adjust the pH to 1.5.

[0045] (3) Add 3.0 g of polyvinyl alcohol to the solution in step (2), fully dissolve and add 300 g of clay with an average particle size of 200 microns, stir well to make it evenly dispersed and keep stirring to keep it in a state of dispersion and suspension.

[0046] 4) Coat the suspension in the dispersed suspension state with an Enducap BK-275 coating machine on the surface of the acidified A4 paper prepared in step (1), and dry it. The thickness of the coating after drying is about 260 microns.

[0047] 5) Cut the dried paper in step (4) to a card with a size of 10mm×20mm, bind it, and pack it.

[0048] The test card is yellow in ...

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Abstract

The invention discloses a test piece of spraying droplet density and size, and belongs to the field of agricultural chemicals spraying. The test piece comprises a substrate and a coating which is coated on the substrate, wherein the coating is the compound of adsorptive supports, water-sensitive material and adhesive, and the thickness of the coating is 1-1000mu m. The invention further discloses a preparation method for the test piece. The test piece can be conveniently carried about, has simple and fast use method, can be used indoors or in wild, and can simultaneously test the spraying droplet density and droplet size.

Description

technical field [0001] The invention belongs to the field of pesticide spraying, in particular to a test card for spray droplet density and size and a preparation method thereof. Background technique [0002] In agricultural crop protection measures, chemical pesticide control is a very effective method of controlling plant diseases and insect pests. In the process of chemical agent control, there are many ways to use agents, including spraying, dusting, particle spreading, seed dressing, etc. Among them, the spraying method is the most commonly used. Among the pesticides used at home and abroad, most of the pesticides are sprayed to apply the active ingredients of the pesticide to the target surfaces such as plants, pests, and soil. [0003] Spray quality has a direct impact on chemical control effect, and one of the influencing factors is the size of spray droplet density. Appropriate droplet density can ensure uniform deposition of medicament on the target surface. Und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N21/78
Inventor 袁会珠杨代斌王金凤
Owner 河北明顺农业科技有限公司
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