Enhanced thermal properties

Before BASF investigated this product, Quirk and Hsieh [1], Yuki and coworkers [2,3] and Fischer [4] carried out investigations with this monomer. The first two used the anionic polymerization mechanism and Fischer tried to copolymerize this monomer using free radical polymerization. In the latter case the yields were very low. The use of S/DPE blocks in thermoplastic elastomers [5] has also been briefly described. Some of the work carried out at BASF has been published in a recent review article [6], Owing to the enhanced thermal properties of this copolymer in comparison with atactic polystyrene - the glass transition temperature increases up to 180 °C, depending... 

ProfatUova, 1. A. Kim, S.-S. Choi, N.-S., Enhanced thermal properties of the solid electrolyte interphase formed on graphite in an electrolyte with fluoroethylene carbonate, Electrochim. Acta 2009, 54, 4445 450. 

The thermal stability of nanocomposites containing cyanate ester/MWCNTs was found to be dependent on the surface modification of CNTs [93]. The results showed that the presence of unmodified MWCNTs in the nanocomposites produced a decrease of the initial decomposition temperature and a char yield similar to the neat resin. On the contrary, the initial decomposition temperature increased with 20 °C in the presence of modified MWCNTs. Moreover, the char yield of the nanocomposites containing modified MWCNTs was much higher than that of the cyanate ester resin. These results proved that the nature of carbon nanofiller is important for developing new nanocomposites with enhanced thermal properties. 

Truong, V. T, Ennis, B. C., and Forsyth, M., Enhanced thermal properties and morphology of ion-exchanged polypyrrole films. Polymer, 36, 1933-1940 (1995). Kivelson, S., Electron hopping in a soliton band conduction in lightly doped (CH)., Phys. Rev. B, 25, 3798-3821 (1982). 

Yei, DR, Kuo, SW, Su, YC Chang, FC (2004). Enhanced thermal properties of PS nanocomposites formed from inorganic POSS-treated montmorillonite. Polymer, Vol. 45,... 

D.-R. Yei, S.-W. Kuo, H.-K. Fu, and F.-C. Chang, Enhanced thermal properties of PS nanocomposites formed from montmorillonite treated with a surfactant/cyclodextrin inclusion complex. Polymer, 46 (2005), 741-50. 

L. C. Du and B. J. Qu, Preparation of LLDPE/MgAl-LDH exfoliation nanocomposites with enhanced thermal properties by melt intercalation. Chinese Journal of Chemistry, 24 (2006), 1342-5. 

P. Ding, M. Zhang, J. Gai, and B. J. Qu, Homogeneous dispersion and enhanced thermal properties of polystyrene layered double hydroxide nanocomposites prepared by in situ reversible addition-fragmentation chain transfer (RAPT) polymerization. Journal of Materials Chemistry, 17 (2007), 1117-22. 

Bryant YG and Colvin DP (1992), Fabric with reversible enhanced thermal properties, US Patent 5366801. 

Materials with Enhanced Thermal Properties. There are three alternate resin systems commonly available for applications requiring thermal properties superior to those available from the enhanced multifunctional epoxies polyimide (PI), cyanate ester blends (CE and BT), and polyphenylene oxide (PPO) blends. 

Thermal properties generally include thermal stability and thermal conductivity. Compared with pure polymer, graphene-polymer composites show enhanced thermal properties. For example, FGS-PMMA composite yielded an increase of 30°C in (glass transition temperature) with a loading of 0.05 wt% FGS. ° The inclusion of FGS increased thermal conductivity by up to 6% in the 0.25 wt% FGS-silicone foam composite. ... 

Bryant and Colvin produced a fibre with integral microcapsules with PCMs or plastic crystals. The fibre has enhanced thermal properties at predetermined temperatures. The microcapsules can range in size from about 1 to about 10 microns. In fabricating the fibre, the desired microencapsulated PCMs are added to the liquid polymer, polymer solution or base material and the fibre is then expended according to conventional methods such as dry or wet spinning of the polymer solutions and extrusion of the polymer melts. According to the report, the maximum content of PCM in the polyacrylic fibre is about 10%. The minimum filament denier is 2.2dtex. ... 

---