Abstract
Polycarbonate (PC) is widely used as a matrix in light diffusing material due to its high transparency. To prepare a light diffusing material, PC is blended with microparticles to scatter the incoming light and create haze without suffering much detriment in light transmittance. It also becomes critical to endow light diffusing PC with concurrent flame retardancy to extend its advanced application. A highly efficient and multifunctional potassium sulfonate functionalized organosilica microspheres (OM-SO3K) were synthesized and employed to produce light diffusing and flame-retardant PC. When the addition of OM-SO3K was only 0.4 mass%, the transmittance and haze of the composite were 78.6% and 90.2%, respectively, while the limiting oxygen index was increased significantly to 37.5% and the V-0 rating of UL 94 test was attained. The flame-retardant mechanism was studied by the characterization of pyrolysis gas, TGA, cone calorimeter test and the analysis of charred residue.
Similar content being viewed by others
References
Tang A, Ding P, Song N, Tang S, Shi L, Zhao Y. Silicate micro-spheres modified with YPO4:Pr3+ particles: possessing light diffusion and blue-light down-conversion properties. Mater Lett. 2015;161:395–8.
Ru Y, Zhang X, Wang L, Dai L, Yang W, Qiao J. Polymer composites with high haze and high transmittance. Polym Chem. 2015;6:6632–6.
Hu J, Zhou Y, He M, Yang X. Novel multifunctional microspheres of polysiloxane@CeO2-PMMA: optical properties and their application in optical diffusers. Opt Mater. 2013;36:271–7.
Song S, Sun Y, Lin Y, You B. A facile fabrication of light diffusing film with LDP/polyacrylates composites coating for anti-glare LED application. Appl Surf Sci. 2013;273:652–60.
Kuo HP, Chuang MY, Lin CC. Design correlations for the optical performance of the particle-diffusing bottom diffusers in the LCD backlight unit. Powder Technol. 2009;192:116–21.
Zhao Y, Ding P, Ba C, Tang A, Song N, Liu Y. Preparation of TiO2 coated silicate micro-spheres for enhancing the light diffusion property of polycarbonate composites. Displays. 2014;35:220–6.
Dong X, Xiong Y, Chen G, Guo S. Effect of the morphology on the anisotropic light scattering of polycarbonate (PC)/poly(styrene-co-acrylonitrile) (SAN)(70/30) blend. Appl Optics. 2015;54:608–14.
Kim HJ, Kim DW, Kim SW. Characteristics of optical diffusers for light-emitting diodes backlight unit prepared by melt-extrusion process. Jpn J Appl Phys. 2013;52:10–24.
Ouyang X, Li P, Chen D, Tang J. Light-diffusing materials for LED illumination applications: Comparing the effectiveness of two typical light-diffusing agents. J Appl Polym Sci. 2015;133:99–106.
Ohtsuka Y, Fujiguchi T, Oishi K. 1994;US 5352747A.
Zhao Z, Qiu J, Xiong Y, Liu X, Shen J, Guo S. In-situ preparation of core-shell-like scatterers and their effects on optical and mechanical properties of PC-matrix light diffusing materials. Mater Des. 2017;115:355–63.
Kong Q, Sun Y, Zhang C, Guan H, Zhang J, Wang DY, Zhang F. Ultrathin iron phenyl phosphonate nanosheets with appropriate thermal stability for improving fire safety in epoxy. Compos Sci Technol. 2019;182:107748.
He Q, Song L, Hu Y, Zhou S. Synergistic effects of polyhedral oligomeric silsesquioxane (POSS) and oligomeric bisphenyl A bis(diphenyl phosphate) (BDP) on thermal and flame retardant properties of polycarbonate. J Mater Sci. 2009;44:1308–16.
Zhang J, Kong Q, Yang L, Wang DY. Few layered Co(OH)2 ultrathin nanosheet-based polyurethane nanocomposites with reduced fire hazard: from eco-friendly flame retardance to sustainable recycling. Green Chem. 2016;18:3066–74.
Kong Q, Wu T, Zhang H, Zhang Y, Zhang M, Si T, Yang L, Zhang J. Improving flame retardancy of IFR/PP composites through the synergistic effect of organic montmorillonite intercalation cobalt hydroxides modified by acidified chitosan. Appl Clay Sci. 2017;146:230–7.
Zhang J, Kong Q, Wang DY. Simultaneously improving the fire safety and mechanical properties of epoxy resin with Fe-CNTs via large-scale preparation. J Mater Chem A. 2018;6:6376–86.
Zhong H, Wu D, Wei P, Jiang P, Li Q, Hao J. Synthesis, characteristic of a novel additive-type flame retardant containing silicon and its application in PC/ABS alloy. J Mater Sci. 2007;42:10106–12.
Nodera A, Kanai T. Thermal decomposition behavior and flame retardancy of polycarbonate containing organic metal salts: effect of salt composition. J Appl Polym Sci. 2004;94:2131–9.
Li Z, Yang R. Flame retardancy, thermal and mechanical properties of sulfonate-containing polyhedral oligomeric silsesquioxane (S-POSS)/polycarbonate composites. Polym Degrad Stabil. 2015;116:81–7.
Tang A, Ding P, Zhao Y, Song N, Shi L. Optical and flame-retardant behavior of polycarbonate composites containing perfluorodecyltriethoxysilane-modified silicate microspheres. Chem Lett. 2015;44:442–4.
Margolese D, Melero JA, Christiansen SC, Chmelka BF, Stucky GD. Direct Syntheses of ordered SBA-15 mesoporous silica containing sulfonic acid groups. Chem Mater. 2000;12:2448–59.
Yang Q, Liu J, Yang J, Kapoor MP, Inagaki S, Li C. Synthesis, characterization, and catalytic activity of sulfonic acid-functionalized periodic mesoporous organosilicas. J Catal. 2004;228:265–72.
Rác B, Molnár Á, Forgo P, Mohai M, Bertóti I. A comparative study of solid sulfonic acid catalysts based on various ordered mesoporous silica materials. J Mol Catal. 2006;244:46–57.
Lu X, Yin Q, Xin Z, Zhang Z. Powerful adsorption of silver(I) onto thiol-functionalized polysilsesquioxane microspheres. Chem Eng Sci. 2010;65:6471–7.
Jiang DD, Yao Q, Mckinney MA, Wilkie CA. TGA/FTIR studies on the thermal degradation of some polymeric sulfonic and phosphonic acids and their sodium salts. Polym Degrad Stabil. 1999;63:423–34.
Cano-Serrano E, Blanco-Brieva G, Campos-Martin JM, Fierro JLG. Acid-functionalized amorphous silica by chemical grafting−quantitative oxidation of thiol groups. Langmuir. 2003;19:7621–7.
Chen CW, Chen CY, Lin CL. Preparation of monodisperse poly(methyl methacrylate) microspheres: effect of reaction parameters on particle formation, and optical performances of its diffusive agent application. J Polym Res. 2011;18:587–94.
Chen CW, Chen CY. Preparation of monodisperse polystyrene microspheres and optical performance of its diffusive-agent application. J Soc Inf Display. 2007;15:845–51.
Wilson K, Lee AF, Macquarrie DJ, Clark JH. Structure and reactivity of sol–gel sulphonic acid silicas. Appl Catal A. 2002;228:127–33.
Xiao D, Li Z, De Juan S, Gohs U, Wagenknecht U, Voit B, Wang DY. Preparation, fire behavior and thermal stability of a novel flame retardant polypropylene system. J Therm Anal Calorim. 2016;125:321–9.
Cayla A, Rault F, Giraud S, Salaün F, Fierro V, Celzard A. PLA with intumescent system containing lignin and ammonium polyphosphate for flame retardant textile. Polymers. 2016;8:331.
Yan L, Xu Z, Wang X. Synergistic flame-retardant and smoke suppression effects of zinc borate in transparent intumescent fire-retardant coatings applied on wood substrates. J Therm Anal Calorim. 2019;136:1563–74.
Acknowledgements
This research is supported by the Project for Key Lab Guangdong High Property Green Eco-friendly Tire (2020B121202022) and the Project for Academician Workstation of Dongguan and Guangdong (2015B090904001). Please be assured that the work described is an original research. For further information, the work has not been published previously, and not under any consideration for publication elsewhere, in whole or in part.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
No conflict of interest exists in the submission of this manuscript, and manuscript is approved by all authors for publication.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Liang, C., Liu, S., Wirasaputra, A. et al. Light diffusing and flame-retardant polycarbonate modified by highly efficient and multifunctional organosilica microspheres. J Therm Anal Calorim 146, 2423–2433 (2021). https://doi.org/10.1007/s10973-021-10580-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10973-021-10580-1