Abstract
Ammonium polyphosphate (APP)-diatomaceous earth (DE) composite prepared by in situ polymerization was modified with silane coupling agent (KH550) and was applied as filler to prepare flame-retardant paper. Fourier transfer infrared, X-ray diffraction and thermogravimetry were used to characterize the structure and properties of the fillers, and limiting oxygen index (LOI), cone calorimeter and field-emission scanning electron microscope were used to investigate the flame-retardant properties of the filled paper. Results showed that chemical bonds occurred between APP-10 % DE filler and KH550, and APP-10 % DE filler had lower water solubility and better crystallization and thermostability after it was modified with KH550. Paper filled with modified APP-10 % DE filler had higher LOI value and lower heat release rate and mass loss at the same filler loading, and its charred residue collected after cone calorimeter test was more compact and strong. Surface modification of APP-10 % DE filler with KH550 improves its flame-retardant effect on paper.
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References
Hong L, Hu J, Xu GL, Liang Y. Preparation of flame-retardant air filter paper with ammonium polyphosphate. China Pulp Pap Ind. 2011;32:49–52.
Chang CP, Hung SC. Manufacture of flame retardant foaming board from waste papers reinforced with phenol-formaldehyde resin. Bioresour Technol. 2003;86:201–2.
Rie DH, Moon SW, Lim KB. Combustion and thermal properties of paper honeycomb. J Therm Anal Calorim. 2012;107:535–9.
Yang HS, Kim DJ, Kim HJ. Combustion and mechanical properties of fire retardant treated waste paper board for interior finishing material. J Fire Sci. 2002;20:505–17.
Simkovic I, White RH, Fuller AM. Flammability studies of impregnated paper sheets. J Therm Anal Calorim. 2012;107:519–26.
Shang CX, Yang S. Flame retardant effect of water-soluble ammonium polyphosphate on paper. Hangzhou Chem Ind. 2010;40:26–8.
Cui JF, Guo JH, Yang BP, Zhou YP. Investigation and preparation of sizing agent with waterborne epoxy bromine carbon resin for flame retardant paper. J Lanzhou Univ Technol. 2010;36:62–5.
Zhou H, Liu Z, Wei YJ. Preparation of fire-retardant paper using magnesium hydroxide as flame retardant. China Pulp Pap. 2009;28:13–6.
Wang SL, Huang JL, Chen FS. Study on Mg–Al hydrotalcites in flame-retardant paper preparation. Bioresource. 2012;7:997–1007.
Lewin M. Unsolved problems and unanswered questions in flame retardance of polymers. Polym Degrad Stab. 2005;88:13–9.
Zhang ZM, Wang SF. Water solubility and hydrolytic behavior of ammonium polyphosphate. Fire Sci Technol. 2001;4:42–3.
Li YT, Wang HX, Wang ZC, He JS. Study on synthetic technology of high efficiency flame retardant ammonium polyphosphat. Inorg Chem Ind. 2012;44:26–9.
ASTM international. Standard test method for heat and visible smoke release rates for materials and products using an oxygen consumption calorimeter. West Conshohocken: ASTM E1354-04a; 2004.
Xi Q, Chang L, Kuang SL. Study on ammonium polyphosphate surface modification with silane coupling agent. Adhes China. 2005;26(19–20):23.
Tan XM, Feng AS, Zhao HQ. Graft modification of SiO2 nano-particles with silane coupling agent. China Powder Sci Technol. 2011;17:14–7.
Xu H, Sun T. Surface modification of nanosized TiO2 with silane coupling agent. Paint Coat Ind. 2008;38:1–17.
Du GX, Zuo RF, Mei LF, Liao JH, Guo WJ. Surface modification of diatomite by silane coupling agent and its effects on the reinforcing efficiency of NR/SBR blend. Rare Metal Mater Eng. 2013;42(Suppl. 1):412–7.
Hao JW, Liu GS, Du JX, Yang RJ, Qiu XY, Zhu F. A study on the surface treatment of ammonium polyphosphate and its application in flame retardant polypropylene. Trans Beijing Inst Technol. 2009;29:556–9.
Camino G, Costa L, Trossarelli L. Study of the mechanism of intumescence in fire retardant polymers: part V—Mechanism of formation of gaseous products in the thermal degradation of ammonium polyphosphate. Polym Degrad Stab. 1985;12:203–11.
Gu JW, Zhang GC, Dong SL, Zhang QY, Kong J. Study on preparation and fire-retardant mechanism analysis of intumescent flame-retardant coatings. Surf Coat Tech. 2007;201:7835–41.
Shan FR, Yu ZM, Luo LS, Zhang Y. Study on surface modification of nano-alumina by silane coupling agent KH550. New Chem Mater. 2013;41(169–170):185.
Hirschler MM. Heat release from plastic materials. In: Babrauskas V, Grayson SJ, editors. Heat release in fires, chapter 12a. London: Elsevier; 1992. p. 375–422.
Ou YX, Chen Y, Wang XM. Flame retarded polymeric materials. Beijing: National Defence Industry Press; 2001.
Ye L, Qu BJ. Flammability characteristics and flame retardant mechanism of phosphate-intercalated hydrotalcite in halogen-free flame retardant EVA blends. Polym Degrad Stab. 2008;93:918–24.
Pan LL, Li GY, Su YC, Lian JS. Fire retardant mechanism analysis between ammonium polyphosphate and triphenyl phosphate in unsaturated polyester resin. Polym Degrad Stab. 2012;97:1801–6.
Qu BJ, Xie RC. Intumescent char structures and flame-retardant mechanism of expandable graphite-based halogen-free flame-retardant linear low density polyethylene blends. Polym Int. 2003;52:1415–22.
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Sha, LZ., Chen, KF. Surface modification of ammonium polyphosphate-diatomaceous earth composite filler and its application in flame-retardant paper. J Therm Anal Calorim 123, 339–347 (2016). https://doi.org/10.1007/s10973-015-4941-1
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DOI: https://doi.org/10.1007/s10973-015-4941-1