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Application of pearlescent pigments in the seed coating industry

Time:2019-10-13 Views: times Dig: times

Application of pearlescent pigments in the seed coating industry

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【product manual】

Seed coating refers to the use of an adhesive or film-forming agent to coat non-seed materials such as fungicides, insecticides, micro-fertilizers, plant growth regulators, colorants or fillers with seeds. Outside, in order to achieve a seed into a spherical shape or to maintain the original shape, improve stress resistance, disease resistance, accelerate germination, promote seedling, increase yield, improve quality of a seed technology. The seed coating agent can be quickly solidified into a film and thus is not easily peeled off.

Coating effect
Seeds coated with a seed coating can quickly absorb water and swell. With the gradual development of embryos in the seeds and the continuous growth of the seedlings, the seed coating agent slowly releases various active ingredients and is gradually absorbed into the body by the seedlings, thereby preventing and controlling seedling pests, promoting growth and development, and increasing crop yield. the goal of. Seed coating has been listed as an important agricultural technology project in China.

Seed coating with crystal pearl powder
It can make the seeds look bright and insect-proof. Jinrunli crystal pearl powder is also called pearl powder. The quality of pearlescent pigment ink depends largely on the moisture, sag and the parallel orientation of the resin in the ink film. . The former is determined by the layout and characteristics of the selected resin, and the latter is based on the ink design formula and the correct printing technology. The resin carrier is the base, and formulation design and printing technology are essential. The ambition ink should have a low solid content. For this reason, the amount of pearlescent pigment should not be too much. Because the pigment is too simple and dense, it will be irregular, which is very simple to place, and the ink layer is dry during printing. The volume of the ink layer should have a large shortening force. The shortening force and the gravity of the flake particles can be used to tighten the flaky mica titanium pearlescent pigment, which tends to be parallel, which is related to the specific gravity of the color paste, paint and ink. Many factors such as viscosity are closely related. The more the flake pigments are placed parallel to the substrate, the better the pearlescent effect of the pigment. Participating in a certain amount of polyethylene wax crucible into the ink can improve its orientation function.
  Seed coating agent with crystal pearl powder,
Selecting the flake pigments for the selection of flake pigments should grasp the relationship between the flakes and the light effect: the larger the diameter of the flakes, the larger the interval between the bright light sources (the distance between the flakes and the flakes), the bright light effect It is more and more scattered. This is because the larger the film diameter, the more time there are multiple reflections and refractions of the light, so the intensity of the light is strong; if the film diameter is small, the distance of the light source is small, the light effect will gather, and the reflection will be repeated. With less refraction timing, the intensity of the light will be weaker. In addition to the relationship between the size of the film and the light, it is also related to the condition of the pigment in the ink. Generally, the smaller the film diameter, the simpler the agglutination, and the easier settlement in the connection guess; the smaller the aspect ratio of the particles, the simpler the connection guess is. Suspended.
   When dispensing ink, it is possible to participate in thickeners to prevent settling or pre-wetting pigments, and then scatter in the connection guess to prevent agglomeration or settling. Since mica titanium pearlescent pigment has outstanding dispersing ability, it has invented superior conditions for ink production. In low-viscosity ink medium, only low-speed mixing can be used to obtain excellent dispersing effect. Together, it can prevent the use of other inks in the production of three-roller, high-speed mixer or ball mill, which will cause the mica titanium pearlescent pigment particles to be broken and lose their luster. Even if it is necessary to use the above equipment to disperse during production, it should be arranged to mix the mica pearlescent pigment during the final period of the ink production process.
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