Preparation of Nano Melamine Phosphate and Its Application in Phenolic Foam

doi:10.11901/1005.3093.2014.400

Chinese Journal of Materials Research

2015, Vol. 29

Issue (5): 377-382 DOI: 10.11901/1005.3093.2014.400

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Preparation of Nano Melamine Phosphate and Its Application in Phenolic Foam

Shaohong XU¹,Zhengzhou WANG^1,^2,^**(

)

1. School of Materials Science and Engineering, Tongji University, Shanghai 200092, China
2. Key laboratory Advanced Civil Engineering Materials, Ministry of Education, Tongji University,
Shanghai 200092, China

Cite this article:

Shaohong XU,Zhengzhou WANG. Preparation of Nano Melamine Phosphate and Its Application in Phenolic Foam. Chinese Journal of Materials Research, 2015, 29(5): 377-382.

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Abstract

Nano melamine phosphate (NMP) flame retardant was synthesized using melamine and phosphoric acid as reagents by means of a solvothermal method. The prepared NMP was then characterized by means of Fourier transform infra-red spectroscopy, X-ray diffraction, and transmission electron microscopy. Effect of solvents, different kinds of surfactants (i.e. SDS, CTAB and NP), reaction temperature and time on the morphology of reaction product was investigated. It is found that the NMP can only be obtained by using benzene as a solvent. If distilled water and anhydrous ethanol were used as solvent, the particle size of the product is in micro scale. As reaction temperature or reaction time increases, the morphology of the products changes greatly. Moreover, types of surfactants have a great influence on the morphology of the products. Moreover, The polyethylene glycol toughened phenolic foam with addition of NMP exhibits a flexural strength 39% higher than that with addition of micro MP.

Key words: organic polymer materials material synthesis nano melamine phosphate solvothermal method phenolic resin

Received: 01 August 2014

Fund: ^*Supported by the National Natural Science Foundation of China Nos. 21174106 & U1205114/L11.

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https://www.cjmr.org/EN/10.11901/1005.3093.2014.400 OR https://www.cjmr.org/EN/Y2015/V29/I5/377

Fig.1 Particle size distribution of MP prepared with different solvents (A) benzene; (B) distilled water; (C) anhydrous ethanol

Fig.2 FTIR of NMP

Fig.3 XRD of MP prepared at different temperatures (A) 120℃; (B) 150℃; (C) 180℃

Fig.4 XRD of MP prepared at different hours (A) 1 h; (B) 3 h; (C) 5 h

Fig.5 SEM of MP prepared using different surfactants (a) SDS, (b) CTAB, (c) NP

Fig.6 SEM of MP prepared at different temperatures (a) 120℃, (b) 150℃, (c) 180℃

Fig.7 SEM of MP prepared at different times (a) 1 h, (b) 3 h, (c) 5 h

Table 1 Formulations of PF and toughened PF foams

Table 2 Flame retardant and mechanical properties of PF and toughened PF foams

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