In this work, cure behaviour and cure kinetic parameters of unsaturated polyester (UP) resin containing Na-Montmorillonite (Cloisite 30B) is investigated. The state of nanoclay dispersion is analysed by small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). Addition of 1–5 wt-% nanoclay results in decreasing gel time, exothermic peak and increasing cure rate. Cure kinetic parameters are determined employing Borchardt–Daniels method. The modelling results also prove: decreased curing reaction starting temperature, higher reaction rate and higher conversion ratio. Besides decreased activation energy ratio and shorter curing cycle are also observed as the main results of incorporating Cloisite 30B to neat UP resin.
HorieK, MitaI and KambeH: ‘Calorimetric investigation of polymerization reaction, IV. Curing reaction of polyester fumarate with styrene’, J. Polym. Sci. (A-1), 1970, 8, 2839–2852.
2.
D. Ratna: ‘Handbook of thermoset resins’; 2009, Shawbury, Shrewsbury, Shropshire, UK; Smithers Rapra Publishing.
NaderiN, BeheshtyMH and MazinaniS: ‘Effect of initiator on thermal curing of unsaturated polyester resins’, Iran. J. Polym. Sci. Technol., 2010, 23, 415–422.
5.
BeheshtyMH, NasiriH and VafayanM: ‘Gel time and exotherm behaviour studies of unsaturated polyester resin initiated and promoted with dual systems’, Iran. Polym. J, 2005, 14, 990–999.
6.
RamisX and SallaJM: ‘Effect of the initiator content and temperature on the curing of an unsaturated polyester resin’, J. Polym. Sci. Phys., 1999, 37, 751–768.
7.
YangYS and SuspenL: ‘Curing of unsaturated polyester resins: Viscosity studies and simulations in pre-gel state’, Polym. Eng. Sci., 1991, 31, 321–332.
8.
RahmatAR, HeatleyF and DayRJ: ‘Comparison of microwave and thermal cure of unsaturated polyester resin’, Plast. Rubber Compos., 2003, 32, 257–264.
9.
LiL, CaoX and LeeLJ: ‘Effect of dual-initiator on low temperature curing of unsaturated polyester resins’, Polymer, 2004, 45, 6601–6612.
10.
CuiHW and DuGB: ‘Development of exfoliated nanocomposite prepared from vinyl acetate and montmorillonite’, Plast. Rubb. Compos., 2012, 41, 413–417.
11.
UtrackiLA, Sepehr and BoccaleriM: ‘Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)’, Polym. Adv. Technol., 2007, 18, 1–37.
RaySS and OkamotoM: ‘Polymer/layered silicate nanocomposite: A review from preparation to processing’, Prog. Polym. Sci., 2003, 28, 1539–1641.
14.
PandeyP, MohantyS and NayakSK: ‘Thermal dehydroxylation of clay as alternative to organic modification: effects on properties of nanocomposites’, Plast. Rubb. Compos., 2014, 43, 166–176.
15.
AwadWH, BeyerG, BenderlyD, IjdoWL, SongtipyaP, Jimenez-GascoMM, ManiasE and WilkieCA: ‘Material properties of nanoclay PVC composites’, Polymer, 2009, 50, 1857–1867.
16.
KubotaH: ‘Curing of highly reactive polyester resin under pressure: Kinetic studies by differential scanning calorimetry’, J. Appl. Polym. Sci., 1975, 19, 2279–2297.
17.
KamalMR and SourourS: ‘Kinetics and thermal characterization of thermoset cure’, Polym. Eng. Sci., 1973, 13, 59–64.
FanJD, LeeLJ, KimJ and ImYT: ‘Cure analysis of sheet molding compound in molds with substructures’, Polym. Eng. Sci., 1989, 29, 740–748.
20.
VafayanM, BeheshtyMH and NasiriN: ‘Developing a kinetic model for low temperature curing of unsaturated polyester resin by using single and dual initiators’, Polym. Polym. Compos., 2007, 15, 183–190.
21.
Ton-ThatMT, ColeKC, JenCK and FrancaDR: ‘Polyester cure monitoring by means of different techniques’, Polym. Compos., 2000, 21, 605–618.
22.
KimDS, HanMJ, LeeJR and ChangJY: ‘Cure behavior and thermal stability of an epoxy: new bismaleimide blends for composite matrices’, Polym. Adv. Technol.;1994, 5, 287–291.
23.
HillDJT, GeorgeGA and RogersDG: ‘A systematic study of the microwave and thermal cure kinetics of the TGDDM/DDS and TGDDM/DDM epoxy-amine resin systems’, Polym. Adv. Technol., 2001, 12, 169–176.
24.
YangSS, HsiehTH, BiHT, HoKS, HoTH, ChenHR, YeSH and ChangYC: ‘Dynamic cure kinetics of epoxy–novolac compounds as studied by differential scanning calorimetry’, J. Appl. Polym. Sci., 2009, 114, 2373–2377.
25.
UmMK, LeeSK and HwangBS: ‘New model for characterising resin cure by dynamic differential scanning calorimetry’, Plast. Rubb. Compos., 2002, 31, 196–200.
26.
LeeLJ: ‘Modeling and computer simulation of reactive processing’, in‘Comprehensive polymer science’, 1st Supplement, ‘Chapter 20’, 575–618; 1992, Oxford, Pergamon Press.
27.
LiqunX and LeeLJ: ‘Kinetic analysis and mechanical properties of nanoclay reinforced unsaturated polyester (UP) resins cured at low temperatures’, Polym. Eng. Sci., 2005, 45, 496–509.
28.
PoorabdollahM, BeheshtyMH and VafayanM: ‘Kinetic modeling of nanoclay-reinforced unsaturated polyester resin’, Polym. Compos., 2011, 32, 1265–1273.
29.
WorzakowskaM: ‘Kinetics of the curing reaction of unsaturated polyester resins catalyzed with new initiators and a promoter’, J. Appl. Polym. Sci., 2006, 102, 1870–1876.
30.
SaetiawK, AtongD, SricharoenchaikulV and Aht-OngD: ‘Thermal decomposition and kinetic study on different types of glass fiber/unsaturated polyester pipe Waste’, Mater. Sci. Forum, 2010, 654, 2652–2655.
31.
WypychF: ‘Chemical modification of clay surfaces, Encyclopedia of surface and colloid science’, 2nd edn; 2006, New York, Taylor & Francis.
32.
NekhamanurakB, PatanathabutrP and HongsriphanN: ‘Thermal–mechanical property and fracture behaviour of plasticised PLA–CaCO3 nanocomposite’, Plast. Rubb. Compos., 2012, 41, 175–179.
33.
MorganAB: ‘Flame retarded polymer layered silicate nanocomposites: a review of Commercial and open literature systems’, Polym. Adv. Technol., 2006, 17, 206–217.
TolleTB and AndersonD P: ‘Morphology development in layered silicate thermoset nanocomposites’, Compos. Sci. Technol.;2002, 62, 1033–1041.
36.
MorgonAB and GilmanGW: ‘Characterization of polymer-layered silicate (clay) nanocomposites by transmission electron microscopy and X-ray diffraction: a comparative study’, J. Appl. Polym. Sci., 2003, 87, 1329–1338.
37.
MartinJL: ‘Kinetic analysis of two DSC peaks in the curing of an unsaturated polyester resin catalyzed with methyl ethyl ketone peroxide and cobalt octoate’, Polym. Eng. Sci., 2007, 47, 62–70.
38.
SaetiawK, AtongD, SricharoenchaikulV, Aht-OngD: ‘Thermal decomposition and kinetic study on different types of glass fiber/unsaturated polyester pipe Waste’, Mater. Sci. Forum, 2010, 654, 2652–2655.
39.
BorchardtHJ and DanielsF: ‘The application of differential analysis to the study of reaction kinetics’, J. Am. Chem. Soc., 1957, 79, 41–46.
40.
OdianG: ‘Principles of polymerization’, 3rd ed; 1991, New York, Wiley.
41.
DuquesneS, JamaC, BrasML, DelobelRP, Recourt and GloaguenJM: ‘Elaboration of EVA–nanoclay systems—characterization, thermal behaviour and fire performance’, Compos. Sci. Technol., 2003, 63, 1141–1148.
42.
ChattopadhyayPK and ChattopadhyayS: ‘Role of epoxy functionality in microstructure–property relationships within elastomeric nanocomposites’, Plast. Rubb. Compos., 2013, 42, 340–348.
