Dreaming Dreaming Photochromic Material basics ultraviolet spectrum bands are divided into three different wavelengths in the 250 (nm) hereinafter called the UVC; wavelength at 250-320 (nm) or less become UVB; 320-380 wavelength (nm) is called UVA. Visible range 380-800 (nm). Dreaming principle of energy use UVA photosensitive molecules key to open, so he jumped from the low-energy high-energy stage stage. That is never visible skip visible, resulting in a color change. When the loss of ultraviolet radiation or temperature rises above 45 degrees, the light-sensitive molecules bond closed, ie to restore the original color Dreaming powder Product Description: MC sensitive powder in the room is not the case for the colorless ultraviolet, through the outdoor sunlight / UV After irradiation, sunlight / UV energy to produce a color change, when they lose sunlight / UV radiation, then return to the original color or colorless. MC powder for color photographic light-sensitive products, discoloration principle absorb specific wavelengths of the ultraviolet light source, by the energy of the light source produces a color change (to purple, red, yellow, etc.), when the absence of a specific wavelength ultraviolet light source, i.e. replies original color. Photosensitive MC powder is treated via a microencapsulation technology products, the appearance of powder, particle size between 1 ~ 10μm, and a high temperature, the modified anti-oxidation characteristics of the microcapsules. MC powder can be used in photographic coatings, inks, plastics various industries, product design mostly indoors (no UV light of the environment) and outdoor (with UV light of the environment) color change for the appeal. Application of paint and screen printing ink: sensitive MC powder is dispersed in the paint and ink, not dissolved in the paint and ink. May be due to different polarity, there is different hue. Can be used in oil and water-based coatings and inks it. Screen printing suggested ratio: 20% -30%, typically 25%. Silicone, injection molding, injection proportion recommendations: 5% applicable to all types of printing, including screen printing, gravure printing and letterpress printing background is recommended to use white or light-colored, color change can increase the degree of difference. Printed material is different, you should choose a suitable substrate of paint or ink. Plastic injection and extrusion of applications: apply to the processing of various plastics, such as PP, PE, PVC, PU, ??PS, etc., should be processed first with white wax wetting the plastic material (note not to exceed the amount of white wax added plastic material 2%), and then added to the color pink plastic material inside, stir, stir to note when dispersed, poor dispersion can be added to an appropriate amount of dispersant. Can be used with different toner mixed use, with a greater variety of color variations. Should be avoided in the process above 250 ℃ for processing. When the processing can be added separately accounted MC powder content of 20% and 20% of antioxidant heat stabilizer to improve stability. Dreaming produce light fatigue resistance, excessive light exposure by UV, acid, free radicals (singlet oxygen) and humidity cause is generally recommended to add UV absorbers and antioxidants to increase resistance to light fatigue resistance. Dreaming additive materials used as antioxidants, heat stabilizers can improve fatigue resistance to light, but the combination of additives according to use and select the desired media may be, the wrong combination of recipes but will accelerate light fatigue resistance. Product Note: Avoid the use of UV absorbers. Sensitivity to high polarity, adding different additives or use the difference between the substrate are likely to cause color. Toxicity and Safety: MC powder for sensitive skin irritation, does not contain harmful substances, comply with the safety standards of toys and food packaging. Dreaming stored material should be sealed and stored in airtight, dry, dark place away from direct sunlight.