The UV curing synthesis and performance research
Time:2016-04-14 14:30Source:未知Click: Number
After professionals of waterborne UV curing fluorinated epoxy acrylate resin synthesis and performance research.
Polyurethane acrylate (PUA) and modified epoxy soybean oil acrylate (ESOA) synthesis, characterization,
The prepolymer solution rheology research;
The UV curing performance research of pressure-sensitive adhesive solution;The physical properties of the pressure sensitive adhesive.
13 c NMR, 1 h-nmr and FT - IR spectrum data show that the synthesis of PUA and modified ESOA product functional groups in the reaction completely, the product completely conforms to the structure characteristic of PUA and modified ESOA. Gel permeation chromatography (GPC) and rotational viscometer analysis results show that the PUA of molecular weight and viscosity of PUA can be adjusted by changing the ratio of polyols kinds and to; Suitable for synthesis of PUA.Determination of synthetic dimer acid modified epoxy soybean oil acrylate acid value (D - ESOA) reaction system, and the results show that temperature is 70 ℃; Organic bismuth (OB) as catalyst can lower the side reaction of isocyanate group, thus reducing the PUA and PUA solution viscosity, molecular weight selected catalyst, Weng salt SA242 has the highest catalytic activity, SA242 usage in 1.5% more appropriate. Synthesis of D - ESOA adaptive reaction temperature should be 110 ~ 114 ℃; Bisphenol A epoxy resin (E - 44) ratio of modified ESOA materials have important effects on the rheological properties of its solution, improve D - dimer acid, E - 44 in the ESOA modified epoxy soybean oil acrylate (E - ESOA) in E - 44 and isophorone diisocyanate - hydroxy ethyl acrylate half adduct (such as mole of IPDI and HEA reaction products, IPDI - HEA) of modified epoxy soybean oil acrylate (U - ESOA) of IPDI - HEA content, increase the viscosity of the prepolymer solution.Adopt the method of determination of gel content in research of PSA curing performance, and the results show that the PUA hydrogenated castor oil (HCO), high glass transition temperature (Tg) and high molecular weight of polyester glycol or IPDI structural unit of content is higher, the curing speed and the higher the degree of curing of PSA; Reduce D - dimer acid ESOA structures and the molar ratio of acrylic acid, increase the U - ESOA and lower content of IPDI - HEA in E - E - 44 content in ESOA structure, all can improve the curing speed and curing degree of the PSA.
TAG:
