UV curable bismaleimides films with functionalized colliodal silica

•3wt% silica colloid optimun for abrasion resistance.•Synergistic effect between polymer and particles.•Lubricity of silicone grafted onto particles. Four acrylated bismaleimides were formulated with PDMS functionalized silica colloids and UV-cured. The acrylated bismaleimides were synthesized via a...

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Bibliographic Details
Published in:Progress in organic coatings 2016-11, Vol.100, p.153-164
Main Authors: Cao, Y., Ren, X., Soucek, M.D.
Format: Article
Language:English
Subjects:
Abrasion resistance
Bismaleimides
Chlorides
Curing
Kinetics
Maleic anhydride
Morpholine
Nanoparticles
Photopolymerization
Polydimethylsiloxane
Polyimides
Polymerization
Reaction kinetics
Silica
Silicon dioxide
Silicone
Silicone resins
Ultraviolet radiation
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Summary:•3wt% silica colloid optimun for abrasion resistance.•Synergistic effect between polymer and particles.•Lubricity of silicone grafted onto particles. Four acrylated bismaleimides were formulated with PDMS functionalized silica colloids and UV-cured. The acrylated bismaleimides were synthesized via a two-step procedure. The first step involved the solution imidization of 2,2′-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride (BPADA), with 4,4′-oxydianiline (ODA) or Bisaniline M (BIS M), 2,2-Bis(amino-4-hydroxyphenyl)hexafluoropropane (BIS-AP-AF) and maleic anhydride (MA) to form hydroxylated bismaleimide. In the second step, the hydroxylated bismaleimide was reacted with acryloyl chloride to form an acrylated bismaleimide. Then, the acrylated bismaleimide was formulated with acryloyl morpholine (AMP) and photoinitiator with or without the addition of PDMS-silica nanoparticles and UV-cured. The curing kinetics were investigated by real-time FTIR and photo-DSC. The kinetic data revealed that the PDMS-silica particles accelerated the photocure rate. The dispersion of PDMS-silica nanoparticles on the film surface was investigated by SEM. Abrasion properties were evaluated using a Taber Abraser. The optimal abrasion resistance was achieved with 3.0wt% PDMS-silica loading.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2016.02.009