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UV -curable coatings ( UV coating for short ) is an environmentally friendly paint . UV coating does not contain organic solvents , no heating , no pollution to the environment , curing speed, and energy saving , which is widely used in poor heat resistance coating of substrates , such as plastic , wood , etc. . Plastic , wood and other substrates in certain situations, require a certain amount of flame resistance , so research applied to substrate the flame type UV coating makes sense . Means of novel nitrogen-containing flame retardants used in this article will be widely used in coatings UV coating , with the horizontal burning test , differential scanning calorimetry (DSC) analysis and Fourier transform infrared (FTIR) analysis of nitrogen class resistance burning agent polymer polyether polyol (POP-290) and the different monomers (such as: trimethylol propane triacrylate , 1,6 - hexanediol diacrylate , tripropylene glycol diacrylate ester, etc. ) . UV coating performance impact on the mixed - type flame retardant UV coatings and limiting oxygen index (LOI) level of relationship between the calculated value and the level of combustion . The study shows that : Loi theoretical calculation larger the value , the higher the level of combustion level ; the selected nitrogen - containing type flame retardant and acrylate UV coating after blending , coating the flame - retardant performance to effectively improve , LOI is increased from the original 21 to 27 , and reached a level of flame retardancy ; light due to the nitrogen- based flame retardant is able to participate in the curing reaction , thereby improving the compatibility with the UV coating ; POP -290 the more content , gel content, and more ; single Assay more the poorer flame retardant properties ; DSC analysis showed retardants, which improve the glass transition temperature ( Tg ) of the UV coating . The above conclusions UV-curable materials flame retardant performance by adding a mixed -type nitrogen -based flame retardants , in order to achieve the application of light-cured material retardant modified , and to provide a reference for radiation curing materials research and development and technological innovation .
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