Polyurethane—Acrylic Coatings

Xiao, Hong; Frisch, K. C.; Kordomenos, P. I.; Ryntz, R. A.

doi:10.1021/bk-1988-0367.ch020

Cited by 5 publications

(2 citation statements)

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“…[1][2][3] These are considered as self-organizing systems because their formation occurs under nonequilibrium conditions. 4,5 The simultaneous processes of reaction and phase separation are typical for IPNs, with the phase separation resulting from the incompatibility of the growing chains formed in situ.…”

Section: Introductionmentioning

confidence: 99%

Sequential interpenetrating polymer networks of novolac resin and poly(n‐butyl methacrylate)

Goswami¹,

Chakrabarty²

2006

J of Applied Polymer Sci

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Novolac resin/poly(n-butyl methacrylate), P(n-BMA), sequential interpenetrating polymer networks (both semi and full types) were prepared and characterization of the various compositions (up to 40% by weight of PF incorporation) was performed in terms of mechanicals, namely, ultimate tensile strength (UTS), percentage elongation at break (% E.B.), modulus, and toughness. Thermal properties were studied by differential scanning calorimetry and thermogravimetric analysis (TGA). Crosslink densities of the IPNs were calculated using Flory-Rehner equation. The morphological features were studied through scanning electron microscope. There was a gradual decrease of modulus and UTS with consequent increases in % E. B. and toughness with increasing proportions of P(n-BMA). An inward shifting and lowering of the glass transition temperatures of the IPNs (compared with that of pure phenolic resin) with increasing proportions of P(n-BMA) were observed. The TGA thermograms exhibit two-step degradation patterns. A typical cocontinuous bi-phasic morphology is evident in the micrographs.

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Section: Introductionmentioning

confidence: 99%

Sequential interpenetrating polymer networks of novolac resin and poly(n‐butyl methacrylate)

Goswami¹,

Chakrabarty²

2006

J of Applied Polymer Sci

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“…IPNs can be defined as a unique alloy of two crosslinked polymers, catented physically by two independent and noninterfering polymerization reactions. [1][2][3] Suthar and coworkers reported a series of IPNs from caster oil based polyurethane and vinyl polymers and their ultimate properties. [4][5][6][7][8] …”

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confidence: 99%

Vinyl ester‐based three‐component IPNs for glass fibre reinforced composite applications

Parmar

Patel

2004

Adv Polym Technol

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Three-component interpenetrating polymer network (IPN) matrix based glass fiber reinforced composites (GRC) have been prepared from the vinyl ester of an epoxy novolac resin (VEN), diglycidyl ether of bisphenol-A (DGEBA) (an epoxy resin), and methyl methacrylate (MMA) (a vinyl monomer). 2,2 -Azobisisobutyronitrile (AIBN) is employed as the initiator for both MMA and vinyl ester (VEN) resins, while DDM (diamino diphenyl methane) is employed for curing of DGEBA. All the IPNs and glass fiber reinforced composites based on these IPNs were characterized and are found to have good resistance to chemical reagents, good thermal stability, and good mechanical properties. C

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Interpenetrating polymer networks from castor oil‐based polyurethanes and polystyrene, XXV

Suthar

Jadav

Dave

1994

Polymer International

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Interpenetrating polymer networks (IPNs) of castor oil-based polyurethanes and polystyrene were prepared by simultaneous polymerization. The liquid prepolyurethanes were formed by reacting the hydroxyl functionality of castor oil with isophorone diisocyanate using different stoichiometric NCO/OH ratios. These prepolyurethanes were mixed with styrene monomer and subsequently polymerized by free radical polymerization initiated by benzoyl peroxide in the presence of the crosslinker 1,4-divinyl benzene. The interpenetrating polymer networks. PU/PS IPNs, were obtained as tough and transparent films by the transfer moulding technique. These IPNs were characterized by the static mechanical properties (tensile strength, Young's modulus and % elongation), thermal properties and morphology. The dielectric relaxation properties (a, E', E" and tan 6) of the IPNs at different temperatures were studied.

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Polyurethane—Acrylic Coatings

Cited by 5 publications

References 0 publications

Sequential interpenetrating polymer networks of novolac resin and poly(n‐butyl methacrylate)

Sequential interpenetrating polymer networks of novolac resin and poly(n‐butyl methacrylate)

Vinyl ester‐based three‐component IPNs for glass fibre reinforced composite applications

Interpenetrating polymer networks from castor oil‐based polyurethanes and polystyrene, XXV

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