The measurement of leaf area has become an indispensable part of agricultural production. The size of the leaf area index has a great influence on the growth and development of the plant and ultimately the quality of the product. A good method for measuring leaf area should be simple, convenient, and low cost, and each measurement value is highly close to the actual area of ​​the blade to be measured, ie, the error is small and the repeatability is good.
At present, the methods for measuring leaf area mainly include leaf area instrumentation, grid method, punching and weighing method, paper-cutting weighing method, image pixel method, correlation coefficient determination method and regression equation method.
The grid method is labor-consuming and time-consuming, and the error is large when the blade edge is complex.
Puncture measurement method has a certain degree of damage to the leaves of plants, and it is difficult to drill holes for small leaves and leaves with thick veins, and the application range is smaller in practice;
The correlation coefficient measurement method and the regression equation method need to undergo area measurement after more complex mathematical modeling, the accuracy is relatively low, and can only be measured for a certain kind of plant, can not be universal between the varieties and types, in fact It is rarely used in operation.
Paper-cut weighing method is simple and convenient, and does not require special equipment;
Image pixels have the advantages of simple and rapid measurement, batch measurement, etc. Measurements are not affected by factors such as blade size and thickness.
The leaf area meter method uses the leaf area meter to measure, has high accuracy, small error, simple and convenient, can realize the non-destructive measurement of the blade, does not hurt the blade, and has now been widely used.
Description
1, Matting Agent suitable used for UV Coating, the equipment types including Roller Coater, Spray Coater, Aniolx Coater, HP Indigo. They are 100% reactive and contain no solvents. Careful design and control of silica physical properties ensure Smooth Matte Finish, Excellent Rub Resistance, Fast Cure.
2, Silica Matting Agent reduce the gloss of finish UV Coating. It is a micronized precipitated silica as white powder. It provided high matting efficiency, excellent coating appearance and high transparency. As well as low oil absorption, easy dispersion and smoothly touch with minimal impact of viscosity.
Characters
1,Surface smoothness and improvement in scratch resistance: These silicas have minimal effect on the physical properties, allowing development of smooth films with excellent hand-feel, scratch resistance and stain resistance.
2, Highest matting efficiency: High pore volume reaches to 1.8-2.0 ml/g, and fine control of the particle size and particle size distribution.
3, Excellent Transparency: Products high purity lead the refractive index inosculate with resin index.
4, Lower Viscosity. This silica matting agent produce by unique technology and cover with special surface treatment. It has low oil absorption, good dispersibility, excellent matting efficiency, all of which enables better scratch resistance and deposition prevention to the film, as well as excellent hand feeling.
Application
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1, UV wood coating, UV floor coating, UV plastic coating, UV Inks. |
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2, UV curtain coating, roller coating, spraying coating. |
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3, UV-curing coatings. |
Strengths
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1, We focus on silica matting agent market about 25 years. Know exactly the customer`s requirements, have most experience about this silica products, provide the best service to the customers. |
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2, We have strict control of the batch quality, the physical index and performance are strictly tested before delivery. Will ensure that stable products of different batch. |
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3, We are the reliable supplier for many countries and some International customers, such as AkzoNobel, Valspar, Nippon Paints, Dgl Camel, and PPG. |
Matting Agent For Uv Coatings,Silica Powder Uv Coating,Uv Coatings Matting Agent,Matte Finish Paint Matting Agent
Guangzhou Quanxu Technology Co Ltd , https://www.anticorrosionpigment.com