Photopolymerization kinetics of dendritic poly(ether–amide)s

Wei, Huanyu; Kou, Huiguang; Shi, Wenfang; Yuan, Huiya; Chen, Yonglie

doi:10.1016/s0032-3861(01)00139-2

Cited by 26 publications

(10 citation statements)

References 12 publications

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“…The viscosity of a resin formulation is one of the most important parameters because it affects its flow ability, air release rate, and photopolymerization rate and the final properties of the cured film. Reactive monomers and sometimes organic solvents 15 are generally added to adjust a formulation's viscosity. As EB600 and EB270 are viscous oligomers, the addition of modifiers as diluents is necessary to reduce the viscosity.…”

Section: Resultsmentioning

confidence: 99%

Photopolymerization and thermal behavior of phosphate diacrylate and triacrylate used as reactive‐type flame‐retardant monomers in ultraviolet‐curable resins

Liang

Asif

Shi

2005

J of Applied Polymer Sci

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Tri(acryloyloxyethyl)phosphate (TAEP) and di(acryloyloxyethyl)ethyl phosphate (DAEEP) were used as reactive-type flame-retardant monomers along with commercial epoxy acrylate and polyurethane acrylate oligomers in ultraviolet (UV)-curable resins. The concentrations of the monomers were varied from 17 to 50 wt %. The addition of the monomers greatly reduced the viscosity of the oligomers and increased the photopolymerization rates of the resins. The flame retardancy and thermal degradation behavior of the UV-cured films were investigated with the limiting oxygen index (LOI) and thermogravimetric analysis. The results showed that the thermal stability at high temperatures greater than 400°C and the LOI values of the UV-cured resins, especially those containing epoxy acrylate, were largely improved by the addition of the monomers. The dynamic mechanical thermal properties of the UV-cured films were also measured. The results showed that the crosslink density increased along with the concentrations of the monomers. However, the glass-transition temperature decreased with an increasing concentration of DAEEP because of the reduction in the rigidity of the cured films, whereas the glass-transition temperature increased with the concentration of TAEP because of the higher crosslink density of the cured films.

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Section: Resultsmentioning

confidence: 99%

Photopolymerization and thermal behavior of phosphate diacrylate and triacrylate used as reactive‐type flame‐retardant monomers in ultraviolet‐curable resins

Liang

Asif

Shi

2005

J of Applied Polymer Sci

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“…They are generally synthesized by repeated reactions of multifunctional monomers, mostly AB 2 type monomers. UV curable oligomers based on amine–ester, ester–amide, and ether–amide with AB 2 type monomers have been prepared by the authors 8–10. However, the UV cured films from those materials are all flammable when attacked by a fire without addition of other flame retardants.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Zhu

Shi

2002

Polymer International

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A series of hyperbranched polyurethane acrylates containing phosphorus were prepared by reaction of a phosphorus‐containing triol with toluene‐2,4‐diisocyanate and hydroxylethyl acrylate at given ratios. The resins obtained were found to polymerize rapidly in the presence of a photofragmenting initiator under UV irradiation, and the maximum polymerization rate increased with temperature up to 125 °C, then decreased quickly. The UV cured films have flame retardancy with a limiting oxygen index of 27.0. © 2002 Society of Chemical Industry

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“…In order to determine the overall reaction order of thiolene photopolymerizaiton, the reaction rate equation was used [8,9].…”

Section: Reaction Ordermentioning

confidence: 99%

Kinetics of UV curable alkyl 3-mercaptopropionate-vinyl silizane

Song

Chen

Wang

et al. 2008

Front. Chem. Eng. China

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Photopolymerization of vinyl-containing liquid silizane preceramic monomers copolymerized with thiol monomers, based on a step-growth radical polymerization mechanism, is a novel, rapid, inexpensive and simple technique for producing preceramic structures from liquid precursors. The kinetics of alkyl 3-mercptopropionate-vinyl silizane under UV irradiation is investigated by using realtime Fourier transform infrared (FT-IR) and photo-differential scanning calorimetry (photo-DSC). The experimental results show preliminarily that: (1) about 80% conversion of vinyl group has been achieved in the presence of a low concentration photoinitiator under UV irradiation; (2) by increasing the functionalities of the thiol group, the peak rate of copolymerization increases and the final conversion of the vinyl group decreases; (3) the copolymerization is primarily a bimolecular radical termination process; (4) the copolymerization is first-order, i.e., its rate is proportional to the vinyl group concentration and independent of the concentration of thiol group.

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Photopolymerization kinetics of dendritic poly(ether–amide)s

Cited by 26 publications

References 12 publications

Photopolymerization and thermal behavior of phosphate diacrylate and triacrylate used as reactive‐type flame‐retardant monomers in ultraviolet‐curable resins

Photopolymerization and thermal behavior of phosphate diacrylate and triacrylate used as reactive‐type flame‐retardant monomers in ultraviolet‐curable resins

Synthesis and photopolymerization of hyperbranched polyurethane acrylates applied to UV curable flame retardant coatings

Kinetics of UV curable alkyl 3-mercaptopropionate-vinyl silizane

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