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Effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the flame retardancy, mechanical, electrical, and thermal properties of intumescent flame-retardant ethylene-vinyl acetate copolymer/microencapsulated ammonium polyphosphate/polyamide-6 blends.
ACS Appl Mater Interfaces. 2011 Sep; 3(9):3754-61.AA

Abstract

Ammonium polyphosphate (APP), a widely used intumescent flame retardant, has been microencapsulated by cellulose acetate butyrate with the aim of enhancing the water resistance of APP and the compatibility between the ethylene-vinyl acetate copolymer (EVA) matrix and APP. The structure of microencapsulated ammonium polyphosphate (MCAPP) was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and water contact angle (WCA). The flame retadancy and thermal stability were investigated by a limiting oxygen index (LOI) test, UL-94 test, cone calorimeter, and thermogravimetric analysis (TGA). The WCA results indicated that MCAPP has excellent water resistance and hydrophobicity. The results demonstrated that MCAPP enhanced interfacial adhesion, mechanical, electrical, and thermal stability of the EVA/MCAPP/polyamide-6 (PA-6) system. The microencapsulation not only imparted EVA/MCAPP/PA-6 with a higher LOI value and UL-94 rating but also could significantly improve the fire safety. Furthermore, the microencapsulated EVA/MCAPP/PA-6 composites can still pass the UL-94 V-0 rating after treatment with water for 3 days at 70 °C, indicating excellent water resistance. This investigation provides a promising formulation for the intumescent flame retardant EVA with excellent properties.

Authors+Show Affiliations

State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21859130

Citation

Wang, Bibo, et al. "Effect of Cellulose Acetate Butyrate Microencapsulated Ammonium Polyphosphate On the Flame Retardancy, Mechanical, Electrical, and Thermal Properties of Intumescent Flame-retardant Ethylene-vinyl Acetate Copolymer/microencapsulated Ammonium Polyphosphate/polyamide-6 Blends." ACS Applied Materials & Interfaces, vol. 3, no. 9, 2011, pp. 3754-61.
Wang B, Tang Q, Hong N, et al. Effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the flame retardancy, mechanical, electrical, and thermal properties of intumescent flame-retardant ethylene-vinyl acetate copolymer/microencapsulated ammonium polyphosphate/polyamide-6 blends. ACS Appl Mater Interfaces. 2011;3(9):3754-61.
Wang, B., Tang, Q., Hong, N., Song, L., Wang, L., Shi, Y., & Hu, Y. (2011). Effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the flame retardancy, mechanical, electrical, and thermal properties of intumescent flame-retardant ethylene-vinyl acetate copolymer/microencapsulated ammonium polyphosphate/polyamide-6 blends. ACS Applied Materials & Interfaces, 3(9), 3754-61. https://doi.org/10.1021/am200940z
Wang B, et al. Effect of Cellulose Acetate Butyrate Microencapsulated Ammonium Polyphosphate On the Flame Retardancy, Mechanical, Electrical, and Thermal Properties of Intumescent Flame-retardant Ethylene-vinyl Acetate Copolymer/microencapsulated Ammonium Polyphosphate/polyamide-6 Blends. ACS Appl Mater Interfaces. 2011;3(9):3754-61. PubMed PMID: 21859130.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the flame retardancy, mechanical, electrical, and thermal properties of intumescent flame-retardant ethylene-vinyl acetate copolymer/microencapsulated ammonium polyphosphate/polyamide-6 blends. AU - Wang,Bibo, AU - Tang,Qinbo, AU - Hong,Ningning, AU - Song,Lei, AU - Wang,Lei, AU - Shi,Yongqian, AU - Hu,Yuan, Y1 - 2011/09/01/ PY - 2011/8/24/entrez PY - 2011/8/24/pubmed PY - 2012/2/4/medline SP - 3754 EP - 61 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 3 IS - 9 N2 - Ammonium polyphosphate (APP), a widely used intumescent flame retardant, has been microencapsulated by cellulose acetate butyrate with the aim of enhancing the water resistance of APP and the compatibility between the ethylene-vinyl acetate copolymer (EVA) matrix and APP. The structure of microencapsulated ammonium polyphosphate (MCAPP) was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and water contact angle (WCA). The flame retadancy and thermal stability were investigated by a limiting oxygen index (LOI) test, UL-94 test, cone calorimeter, and thermogravimetric analysis (TGA). The WCA results indicated that MCAPP has excellent water resistance and hydrophobicity. The results demonstrated that MCAPP enhanced interfacial adhesion, mechanical, electrical, and thermal stability of the EVA/MCAPP/polyamide-6 (PA-6) system. The microencapsulation not only imparted EVA/MCAPP/PA-6 with a higher LOI value and UL-94 rating but also could significantly improve the fire safety. Furthermore, the microencapsulated EVA/MCAPP/PA-6 composites can still pass the UL-94 V-0 rating after treatment with water for 3 days at 70 °C, indicating excellent water resistance. This investigation provides a promising formulation for the intumescent flame retardant EVA with excellent properties. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/21859130/Effect_of_cellulose_acetate_butyrate_microencapsulated_ammonium_polyphosphate_on_the_flame_retardancy_mechanical_electrical_and_thermal_properties_of_intumescent_flame_retardant_ethylene_vinyl_acetate_copolymer/microencapsulated_ammonium_polyphosphate/polyamide_6_blends_ L2 - https://dx.doi.org/10.1021/am200940z DB - PRIME DP - Unbound Medicine ER -