scholarly journals Bionic boron/silicon‐modified phenolic resin system with multifunctional groups: synthesis, thermal properties and ablation mechanism

2018 ◽  
Vol 4 (3) ◽  
pp. 85-93 ◽  
Author(s):  
Fengyi Wang ◽  
Zhixiong Huang ◽  
Zhiguang Guo
Keyword(s):  
Thermal Properties ◽  
Phenolic Resin ◽  
Resin System ◽  
Ablation Mechanism

scholarly journals Synergistic Effects of Aluminum Diethylphosphinate and Melamine on Improving the Flame Retardancy of Phenolic Resin

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 158 ◽  
Author(s):  
Ru Zhou ◽  
Wenjuan Li ◽  
Jingjing Mu ◽  
Yanming Ding ◽  
Juncheng Jiang
Keyword(s):  
Heat Release ◽  
Flame Retardancy ◽  
Phenolic Resin ◽  
Residual Carbon ◽  
Content Increase ◽  
Resin System ◽  
Total Heat Release ◽  
Residual Carbon Content ◽  
Pure Phenolic Resin ◽  
Carbon Content Increase

A series of novel flame retardants (aluminum diethylphosphinate and melamine) were used to improve the fire performance of phenolic resin. Fourier transform infrared spectroscopy (FTIR) was used to characterize the modification results. Thermo-gravimetric analysis (TGA) was used to study the thermal decomposition of phenolic resin system, and the flame retardancy of phenolic resin system was tested by vertical combustion test (UL-94) and limiting oxygen index (LOI). The combustion properties of modified phenolic resin were further tested with a cone calorimeter(CCT). Finally, the structure of carbon residue layer was measured by scanning electron microscopy (SEM). The results show that with the introduction of 10 wt % aluminum diethylphosphinate in phenolic resin, the LOI reaches 33.1%, residual carbon content increase to 55%. The heat release rate (HRR) decreased to 245.6 kW/m2, and the total heat release (THR) decreased to 58.6 MJ/m2. By adding 10 wt % aluminum diethylphosphinate and 3 wt % melamine, the flame retardancy of the modified resin can pass UL-94 V-0 flame retardant grade, LOI reaches 34.6%, residual carbon content increase to 59.5%. The HRR decreases to 196.2 kW/m2 at 196 s, relatively pure phenolic resin decreased by 35.5%, and THR decreased to 51 MJ/m2. Compared with pure phenolic resin, the heat release rate and total heat release of modified phenolic resin decreased significantly. This suggests that aluminum diethylphosphinate and melamine play a nitrogen-phosphorus synergistic effect in the phenolic resin, which improves the thermal stability and flame retardancy of the phenolic resin.

Tribiological behavior of modified phenolic resin composites for braking applications

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fikrat Yusubov
Keyword(s):  
Thermal Properties ◽  
Phenolic Resin ◽  
Degradation Mechanism ◽  
Mechanical And Thermal Properties ◽  
Content Type ◽  
Dry Conditions ◽  
Powder Metallurgy Methods ◽  
Thermal Stability Of

Purpose The purpose of this paper is to investigate the influence of binder effect on tribological behavior of brake friction composite materials: a case study of phenolic resin modified by N-Methylaniline. Design/methodology/approach Four different friction materials have been fabricated by varying modified phenolic resin content. The samples were prepared by the conventional powder metallurgy methods following ball milling, mixing, pre-forming, hot pressing and post-curing processes. Thermogravimetric analysis was used to determination of the degradation mechanism of organic components and study of thermal stability of the samples. A friction test was carried out in dry conditions using a vertical tribometer. Analysis of worn surfaces was performed using a scanning electron microscope. Findings The experimental results revealed that the sample containing 25 Wt.% phenolic resin has good mechanical and thermal properties with stable friction characteristics. Originality/value This paper presents the effect of N-methylaniline modified phenolic resin on friction composites to improve tribological performance by its thermal properties.

Mechanical and thermal properties of graphene oxide/phenolic resin composite

2013 ◽  
Vol 34 (8) ◽  
pp. 1245-1249 ◽  
Author(s):  
Jintang Zhou ◽  
Zhengjun Yao ◽  
Yongxin Chen ◽  
Dongbo Wei ◽  
Yibing Wu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Thermal Properties ◽  
Phenolic Resin ◽  
Resin Composite ◽  
Mechanical And Thermal Properties

Preparation and Thermal Properties of Phenolic Resin/Organic Expanded Vermiculite Nanocomposites

2013 ◽  
Vol 1 (1) ◽  
pp. 51-55 ◽  
Author(s):  
Ya Chongqing ◽  
Lu Shunping ◽  
Yu Jianying ◽  
Nie Yong ◽  
Feng Congcong ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Phenolic Resin ◽  
Expanded Vermiculite
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