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The influencing factor of speed of solidify of UV solidify coating

From;  Author:Stand originally


This kind of initator is C6H5COC6H5→[C6H5COC6H5]3[C6H5COC6H5]3 RH→(C6H5)2COH· R· commonly balmy ketone, if ketone of 2 benzene armour reachs his to spread out

Miscellaneous ketone of biology, sulfur. But this kind of initator causes rate slower. With respect to ketone of 2 benzene armour character, below the case that cooperates to use in it and amine of father's younger brother [12] , although hydrogen can be mixed of amine of father's younger brother cooperate content to create freedom of amino alkyl oxygen below smooth action base, reaction has generated oxide and can capture with oxygen hydrogen is atomic, the block that removes oxygen thereby gets together action. But because its are ternary voice life is long [13] , the block of disappear deoxidize gets together action needs time, cause rate consequently slow, film solidify time is long, cause production efficiency is low.

1.1.2 cation smooth initator

Cation smooth initator includes the following kinds commonly: ⒂ of lofty of grapes of Nai of Niu of astounded of cangue of ⒎ of lofty of grapes of Nai of Rong of Lin of cangue of ⒎ of lofty of  of cangue quiet an ancient nationality in China thanks  forgive coil up to hold system of? silicon alkyl, 2 luxuriant molysite to wait. With scent heavy nitrogen salt is exemple, although cause rate faster, but as a result of its stability of keep in storage is differred, and nitrogen is given off when smooth solution, film is become in polymer bleb, pinprick is generated to wait in the process, be washed out gradually consequently; is balmy salt of sulfur Piao old man and salt of old man of balmy iodine Piao, their stability is wonderful, but they are the biggest absorb wavelengh to be in Yuan Zi outskirt, do not have in close violet outskirt absorb, accordingly, their cause rate slower, the solidify rate of UV solidify system is slower also.

The influence of 1.2 smooth initator to solidify speed

The discussion that passes initator of afore-mentioned pair of two kinds of light is knowable, generally speaking, the solidify rate that freedom radical light causes a system is rapidder, but as a result of solidify hind, film systole is bigger, adherent force is so poorer; is contrary, the most cation that uses now causes a system solely, its solidify rate is slower, but the systole as a result of film is small, can produce bulk to expand even [14] , adherent strength is consequently better.

Different smooth initator is different also to the absorptivity of ultraviolet light of same wave band, cause speed to also differ consequently. Different smooth initator is inside ultraviolet light area, have the biggest absorb a peak, in the biggest recruit summit office, of initator cause efficiency highest, thereby the solidify rate of solidify system is the rapiddest also. Accordingly, be aimed at different illuminant, want to choose different smooth initator, be like: What carbonyl A Chinese-style unlined garment confuses?00cm-1 place to have the greatest emissive power is ultraviolet the lamp, the smooth initator that should choose in the system is 907, what if use,have the greatest emissive power in 320cm-1 place is ultraviolet the lamp, the smooth initator that should choose in the system is 369, can make initator is amounted to to the absorptivity of ultraviolet light so the biggest, thereby solidify rate is the rapiddest.
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