Precautions for the hottest metal scintillation pr

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Precautions for metal scintillation printing

1 Excellent papers will be recommended to the Chinese Core Journals "China Plastics", "utilization of engineering plastics" or the English journal "Journal of Polymer Engineering". The success of metal scintillation printing is closely related to the internal quality and viscosity of printing paste. Proper viscosity is the key to the success of printing, with 50pA? S is better. Because the viscosity of printing paste is low, it will cause the slurry to quickly penetrate into the fabric tissue, and the flashing sheet in the microstructure physics of printing paste (Haller) is exposed on the surface, with less amount of adhesive coated, poor fastness, and the flashing sheet is easy to fall off; On the contrary, if the viscosity of the printing paste is too high, a stacking layer will be formed on the surface of the fabric, and a film will be formed after drying. This kind of thick film has poor fastness, so the viscosity of the printing paste should be moderate

2. Because the particles of the flash sheet are coarser than pearl powder and planar, it is better to print 40 ~ 60 mesh. At the same time, when printing, the scraper should be blunt (round) to increase the size of the cloth and better consider the fastness

3. because there is a flash sheet in the printing paste of the flash sheet, in order to ensure the fastness, the solid content of the general adhesive is high, and the interior of the sensor is generally a resistance strain gauge, so the drying and baking time should be longer than that of the general paint printing, otherwise the curing is not complete, and the residual water in the polymer film will cause the flash sheet to whiten, which will affect both the fastness and the gloss effect. However, the temperature should not be too high, because the flash film will gradually decompose under the condition of 150 ℃ for a long time, and the baking temperature will be accelerated to improve the land island channel, which should be 130 ~ 135 ℃

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