2.1.2 pairs of luscious monomer
Of the quantity that double functionality monomer presses material by acrylic acid and binary alcohol than 2 ∶ 1 react and become. Like TPGDA(2 shrink 3 third 2 alcohol 2 acrylic ester) , HDDA(1, 6- oneself 2 alcohol 2 acrylic ester) etc is more commonly used monomer.
2.1.3 3 luscious monomer
The active of these monomer compares double luscious acrylic acid ester is tall, promote solidify rate with very few dosage normally, have 3 hydroxide of TMPTA(commonly usedly methylic propane 3 acrylic ester) , PETA(Ji Wu 4 alcohol 3 acrylic ester) etc.
2.1.4 much more luscious monomer
The common characteristic of much more luscious monomer is active big, solidify rate is rapid, be like Ji Wu 4 alcohol 4 alcohol of the fifth of the ten Heavenly Stem of 4 acrylic ester, 2 season 6 acrylic ester.
The 2.2 monomer influence to solidify speed
The main factor that monomer functionality is influence solidify speed [20] , the person such as Ma Jiaju parts with BA(acrylic acid fourth ester) , TMPTA(3 hydroxide are methylic 3 acrylic acid of propane ester) with SR295(Ji Wu 4 alcohol 4 acrylic ester) attenuant double phenolic A epoxy resin. Experimental result expresses 1 to show as follows.
Note: Virtuous hold sb in respectful awe?.40mW/cm2 of Kang of of leave uncovered holding sb in respectful awe, radiometer of UV-A of factory of photoelectricity of Beijing Normal University determines. Ester of BA(acrylic man) , the functionality of TMPTA and SR295 is respectively 1, 3, 4.
This shows, as the addition of monomer functionality and dosage, solidify speed is accelerated subsequently, the experiment of the person such as Ju Xuecheng, Xu Maojun [the fact that 21] also says palpability is same. Because of the addition as monomer functionality, the active of monomer greatens, solidify speed is accelerated subsequently.
The research direction of 2.3 monomer
As the addition of monomer functionality, solidify speed of the system is accelerated subsequently, but also brought at the same time a series of negative effect, if shrinkage is big, add exert oneself to reduce thereby. To overcome this one inadequacy, in use process, monomer of general will much functionality and odd functionality monomer mix use, can reduce the shrinkage of solidify film already so, can achieve higher solidify rate again. To achieve higher solidify rate, still can use alkyl to monomer the measure that oxygen radical turns [22] , the acrylic ester that because of alkyl oxygen radical changes can give off hydrogen in the process of solidify, such is in and carry hydrogen model in the process that smooth initator union uses, can raise smooth initator cause efficiency, raise the smooth solidify rate of solidify system thereby.
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3 get together beforehand content
3.1 get together beforehand the classification of content
Radiation solidify is used get together beforehand matter says oligomer again, it is the small element polymer that contains not saturated and luscious group, majority is the oligomer that carries acrylic ester, industrialized now acrylic ester changes get together beforehand owner should have 4 sort model: Road of of セ of Rong of ┧ of of ⒈ of of children's hair of Jia of cost of act of of セ of ┧ Rong by? of Rong of ┧ of of Yan of wood of of セ of Rong of ┧ of of ⒈ of ァ of hencoop of wood of of セ of Rong of ┧ of of ⒈ of ァ of appearance Rong among them with annulus oxygen acrylic acid ester is mixed polyurethane acrylic acid ester most.
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