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Effect of Thermal Conductive Fillers on the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6.
Materials (Basel). 2019 Dec 09; 12(24)M

Abstract

In this work, polyamide 6 (PA6) composites with improved flame retardancy and thermal conductivity were prepared with different thermal conductive fillers (TC fillers) such as aluminum nitride (AlN) and boron nitride (BN) in a PA6 matrix with aluminum diethylphosphinate (AlPi) as a fire retardant. The resultant halogen-free flame retardant (HFFR) and thermal conductive (TC) PA6 (HFFR-TC-PA6) were investigated in detail with a mechanical property test, a limiting oxygen index (LOI), the vertical burning test (UL-94), a cone calorimeter, a thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphology of the impact fracture surface and char residue of the composites were analyzed by scanning electron microscopy (SEM). It was found that the thermal conductivity of the HFFR-TC-PA6 composite increased with the amount of TC fillers. The TC fillers exerted a positive effect for flame retardant PA6. For example, the HFFR-TC-PA6 composites with the thickness of 1.6 mm successfully passed the UL-94 V-0 rating with an LOI of more than 29% when the loading amount of AlN-550RFS, BN-SW08 and BN-NW04 was 30 wt%. The morphological structures of the char residues revealed that TC fillers formed a highly integrated char layer surface (without holes) during the combustion process, as compared to that of flame retardant PA6/AlPi composites. In addition, the thermal stability and crystallization behavior of the composites were studied.

Authors+Show Affiliations

Guangdong ProvincialKey Laboratory of Industrial Surfactant, Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangzhou 510665, China.Guangdong ProvincialKey Laboratory of Industrial Surfactant, Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangzhou 510665, China.Guangdong ProvincialKey Laboratory of Industrial Surfactant, Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangzhou 510665, China.Guangdong ProvincialKey Laboratory of Industrial Surfactant, Guangdong Research Institute of Petrochemical and Fine Chemical Engineering, Guangzhou 510665, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31818046

Citation

Wang, Fang, et al. "Effect of Thermal Conductive Fillers On the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6." Materials (Basel, Switzerland), vol. 12, no. 24, 2019.
Wang F, Shi W, Mai Y, et al. Effect of Thermal Conductive Fillers on the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6. Materials (Basel). 2019;12(24).
Wang, F., Shi, W., Mai, Y., & Liao, B. (2019). Effect of Thermal Conductive Fillers on the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6. Materials (Basel, Switzerland), 12(24). https://doi.org/10.3390/ma12244114
Wang F, et al. Effect of Thermal Conductive Fillers On the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6. Materials (Basel). 2019 Dec 9;12(24) PubMed PMID: 31818046.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of Thermal Conductive Fillers on the Flame Retardancy, Thermal Conductivity, and Thermal Behavior of Flame-Retardant and Thermal Conductive Polyamide 6. AU - Wang,Fang, AU - Shi,Wenbo, AU - Mai,Yuliang, AU - Liao,Bing, Y1 - 2019/12/09/ PY - 2019/10/14/received PY - 2019/11/25/revised PY - 2019/12/03/accepted PY - 2019/12/11/entrez PY - 2019/12/11/pubmed PY - 2019/12/11/medline KW - composites KW - flame retardancy KW - polyamide 6 KW - thermal conductive fillers KW - thermal conductivity JF - Materials (Basel, Switzerland) JO - Materials (Basel) VL - 12 IS - 24 N2 - In this work, polyamide 6 (PA6) composites with improved flame retardancy and thermal conductivity were prepared with different thermal conductive fillers (TC fillers) such as aluminum nitride (AlN) and boron nitride (BN) in a PA6 matrix with aluminum diethylphosphinate (AlPi) as a fire retardant. The resultant halogen-free flame retardant (HFFR) and thermal conductive (TC) PA6 (HFFR-TC-PA6) were investigated in detail with a mechanical property test, a limiting oxygen index (LOI), the vertical burning test (UL-94), a cone calorimeter, a thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphology of the impact fracture surface and char residue of the composites were analyzed by scanning electron microscopy (SEM). It was found that the thermal conductivity of the HFFR-TC-PA6 composite increased with the amount of TC fillers. The TC fillers exerted a positive effect for flame retardant PA6. For example, the HFFR-TC-PA6 composites with the thickness of 1.6 mm successfully passed the UL-94 V-0 rating with an LOI of more than 29% when the loading amount of AlN-550RFS, BN-SW08 and BN-NW04 was 30 wt%. The morphological structures of the char residues revealed that TC fillers formed a highly integrated char layer surface (without holes) during the combustion process, as compared to that of flame retardant PA6/AlPi composites. In addition, the thermal stability and crystallization behavior of the composites were studied. SN - 1996-1944 UR - https://www.unboundmedicine.com/medline/citation/31818046/Effect_of_Thermal_Conductive_Fillers_on_the_Flame_Retardancy_Thermal_Conductivity_and_Thermal_Behavior_of_Flame_Retardant_and_Thermal_Conductive_Polyamide_6_ L2 - http://www.mdpi.com/resolver?pii=ma12244114 DB - PRIME DP - Unbound Medicine ER -
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