Dripping and decomposition under fire: Melamine cyanurate vs. glass fibres in polyamide 6

被引：25

作者：

Diniz, Analice Turski Silva ^{[1
]}

Huth, Christian ^{[1
]}

Schartel, Bernhard ^{[1
]}

机构：

[1] Bundesanstalt Mat Forsch & Prufung BAM, Unter Eichen 87, D-12205 Berlin, Germany

来源：

POLYMER DEGRADATION AND STABILITY | 2020年 / 171卷

关键词：

Dripping; UL; 94; Polyamide; 6; Melamine cyanurate; Glass fibre; Flame retardant; THERMAL-DEGRADATION; FLAME RETARDANCY; BEHAVIOR; POLYMER; INSTRUMENTATION; TEMPERATURE;

D O I：

10.1016/j.polymdegradstab.2019.109048

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Manipulating the melt dripping of thermoplastics makes a fire scenario more or less dangerous. Yet, a detailed understanding of this phenomenon has remained a question mark in studies of the flammability of plastics. In this work, the individual and collective impacts of additives on the dripping behaviour of polyamide 6 (PA6) were studied. A set of materials compounded with melamine cyanurate (MCA) and glass fibre (GF) was investigated. Under UL 94 vertical test conditions, the dripping during first and second ignition was quantified and investigated in detail. The number, size and temperature of the drops were addressed, and the materials and their drops evaluated with respect to such aspects as their averaged molecular weight, thermal decomposition and Theological properties. PA6 with V-2 classification improved to V-0 with the addition of MCA, and achieved HB in the presence of GF. PA6/GF/MCA achieved V-2. Non-flaming drops of PA6/MCA consisted of oligomeric fragments. Flaming drops of PA6/GF showed a more pronounced decomposition of PA6 and an increased GF content. The dripping behaviour of PA6/GF/MCA can be understood as a combination of the influence of both additives. The results showed nicely that dripping under fire is neither a straightforward material property nor a simple additive influence, but the complex response of the material influenced by the interaction and competition of different phenomena. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：14

共 38 条

[1]

[Anonymous], 606951110 UL 94 IEC

[2]

Bertelli G., 1993, FIRE MATER, V17, P125, DOI [10.1002/fam.810170305, DOI 10.1002/FAM.810170305]

[3] Competition in aluminium phosphinate-based halogen-free flame retardancy of poly(butylene terephthalate) and its glass-fibre composites [J].

Brehme, Sven ;

Koeppl, Thomas ;

Schartel, Bernhard ;

Altstaedt, Volker .

E-POLYMERS, 2014, 14 (03) :193-208

[4] Fire-retardant mechanistic aspects of melamine cyanurate in polyamide copolymer [J].

Casu, A ;

Camino, G ;

De Giorgi, M ;

Flath, D ;

Morone, V ;

Zenoni, R .

POLYMER DEGRADATION AND STABILITY, 1997, 58 (03) :297-302

[5] Instrumentation of UL-94 test: understanding of mechanisms involved in fire retardancy of polymers [J].

Dupretz, Renaud ;

Fontaine, Gaelle ;

Duquesne, Sophie ;

Bourbigot, Serge .

POLYMERS FOR ADVANCED TECHNOLOGIES, 2015, 26 (07) :865-873

[6] Differences in the flame retardant mechanism of melamine cyanurate in polyamide 6 and polyamide 66 [J].

Gijsman, P ;

Steenbakkers, R ;

Fürst, C ;

Kersjes, J .

POLYMER DEGRADATION AND STABILITY, 2002, 78 (02) :219-224

[7]

Holland BJ, 2000, POLYM INT, V49, P943, DOI 10.1002/1097-0126(200009)49:9<943::AID-PI400>3.0.CO

[8]

2-5

[9] In-situ investigation of temperature evolution of drippings via an optimized UL-94 instrumentation: Application to flame retarded polybutylene succinate [J].

Hu, Chi ;

Fontaine, Gaelle ;

Tranchard, Pauline ;

Delaunay, Thierry ;

Collinet, Marion ;

Marcille, Sophie ;

Bourbigot, Serge .

POLYMER DEGRADATION AND STABILITY, 2018, 155 :145-152

[10] The relationship between thermal degradation behavior of polymer and the fire retardancy of polymer/clay nanocomposites [J].

Jang, BN ;

Costache, M ;

Wilkie, CA .

POLYMER, 2005, 46 (24) :10678-10687

← 1 2 3 4 →