A P/N/S-containing high-efficiency flame retardant endowing epoxy resin with excellent flame retardance, mechanical properties and heat resistance

2020 ◽  
Vol 199 ◽  
pp. 108228 ◽  
Author(s):  
Jiahao Zou ◽  
Huajun Duan ◽  
Yongsheng Chen ◽  
Sa Ji ◽  
Jianfan Cao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Resistance ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
High Efficiency ◽  
Flame Retardance

Piperazine-modified ammonium polyphosphate as monocomponent flame-retardant hardener for epoxy resin: flame retardance, curing behavior and mechanical property

2016 ◽  
Vol 7 (17) ◽  
pp. 3003-3012 ◽  
Author(s):  
Yi Tan ◽  
Zhu-Bao Shao ◽  
Lei-Xiao Yu ◽  
Jia-Wei Long ◽  
Min Qi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Smoke Suppression ◽  
Flame Retardance ◽  
Suppression Efficiency

PAz-APP (as a monocomponent hardener) can bring excellent flame retardance and smoke suppression efficiency to the EP system without sacrificing the mechanical properties and glass transition temperature.

scholarly journals Preparation and characterization of polydopamine/melamine microencapsulated red phosphorus and its flame retardance in epoxy resin

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20391-20402
Author(s):  
Chen Cheng ◽  
Yanling Lu ◽  
Weining Ma ◽  
Shaojie Li ◽  
Jun Yan ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Shell Structure ◽  
Composite Shell ◽  
Intumescent Flame Retardant ◽  
Smoke Suppression ◽  
Flame Retardance ◽  
Red Phosphorus ◽  
Composite Shell Structure

Red phosphorus was coated by a polydopamine/melamine composite shell structure, which constituted an intumescent flame retardant with superior flame retardance and smoke suppression performance for epoxy resin.

scholarly journals A Study on the Synthesis, Curing Behavior and Flame Retardance of a Novel Flame Retardant Curing Agent for Epoxy Resin

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 245
Author(s):  
Yong Sun ◽  
Yongli Peng ◽  
Yajiao Zhang
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Decomposition Temperature ◽  
Isothermal Kinetics ◽  
Flame Retardance ◽  
Curing Agent ◽  
Initial Decomposition Temperature ◽  
Limiting Oxygen Index ◽  
Epoxy Resin System ◽  
Dsc Method

In this work, a flame retardant curing agent (DOPO-MAC) composed of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide DOPO and methyl acrylamide (MAC) was synthesized successfully, and the structure of the compound was characterized by FT-IR and 1H-NMR. The non-isothermal kinetics of the epoxy resin/DOPO-MAC system with 1% phosphorus was studied by non-isothermal DSC method. The activation energy of the reaction (Ea), about 46 kJ/mol, was calculated by Kissinger and Ozawa method, indicating that the curing reaction was easy to carry out. The flame retardancy of the epoxy resin system was analyzed by vertical combustion test (UL94) and limiting oxygen index (LOI) test. The results showed that epoxy resin (EP) with 1% phosphorus successfully passed a UL-94 V-0 rating, and the LOI value increased along with the increasing of phosphorus content. It confirmed that DOPO-MAC possessed excellent flame retardance and higher curing reactivity. Moreover, the thermal stability of EP materials was also investigated by TGA. With the DOPO-MAC added, the residual mass of EP materials increased remarkably although the initial decomposition temperature decreased slightly.

scholarly journals Effects of Combining Graphene Nanoplatelet and Phosphorous Flame Retardant as Additives on Mechanical Properties and Flame Retardancy of Epoxy Nanocomposite

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2349
Author(s):  
Woranan Netkueakul ◽  
Beatrice Fischer ◽  
Christian Walder ◽  
Frank Nüesch ◽  
Marcel Rees ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Crosslinking Density ◽  
Milling Process ◽  
Structure Property ◽  
Cone Calorimetry ◽  
Graphene Nanoplatelet ◽  
Phosphorous Flame Retardant

The effects of combining 0.1–5 wt % graphene nanoplatelet (GNP) and 3–30 wt % phosphorous flame retardant, 9,10- dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as fillers in epoxy polymer on the mechanical, flame retardancy, and electrical properties of the epoxy nanocomposites was investigated. GNP was homogeneously dispersed into the epoxy matrix using a solvent-free three-roll milling process, while DOPO was incorporated into the epoxy resin by mechanical stirring at elevated temperature. The incorporation of DOPO reduced the crosslinking density of the epoxy resin. When using polyetheramine as a hardener, the structural rigidity effect of DOPO overshadowed the crosslinking effect and governed the flexural moduli of epoxy/DOPO resins. The flexural moduli of the nanocomposites were improved by adding GNP up to 5 wt % and DOPO up to 30 wt %, whereas the flexural strengths deteriorated when the GNP and DOPO loading were higher than 1 wt % and 10 wt %, respectively. Limited by the adverse effects on mechanical property, the loading combinations of GNP and DOPO within the range of 0–1 wt % and 0–10 wt %, respectively, in epoxy resin were further studied. Flame retardancy index (FRI), which depended on three parameters obtained from cone calorimetry, was considered to evaluate the flame retardancy of the epoxy composites. DOPO showed better performance than GNP as the flame retardant additive, while combining DOPO and GNP could further improve FRI to some extent. With the combination of 0.5 wt % GNP and 10 wt % DOPO, improvement in both mechanical properties and flame retardant efficiency of the nanocomposite was observed. Such a combination did not affect the electrical conductivity of the nanocomposites since the percolation threshold was at 1.6 wt % GNP. Our results enhance the understanding of the structure–property relationship of additive-filled epoxy resin composites and serve as a property constraining guidance for the composite manufacturing.

Research Progress of Heat Hv Insulation Resistance of Macromolecular Composite Materials

2011 ◽  
Vol 391-392 ◽  
pp. 332-335
Author(s):  
Yong Peng Yu
Keyword(s):  
Composite Materials ◽  
Heat Resistance ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
High Performance ◽  
Research Progress ◽  
Insulation Resistance ◽  
Excellent Performance ◽  
Wet Heat

Epoxy resin (EP) with excellent performance was widely used as electronic encapsulation materials, but the traditional EP can not meet require of nowadays electronic encapsulation materials in wet-heat resistance, flame retardant, insulation and other performance. So the current research progress of EP with wet-heat resistance and high-performance was summarized in the field of electronic encapsulation.

scholarly journals Halogen Free Flame-Retardant Glass Fiber Reinforced PA 66 / PPO Alloys

2021 ◽  
Author(s):  
Zhenya Zhang ◽  
Kunpeng Cai ◽  
Yaxin Guo ◽  
Xiaohua Liu ◽  
Suqin He ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Resistance ◽  
Glass Fiber ◽  
Flame Retardant ◽  
Wear Volume ◽  
Fiber Reinforced ◽  
Wear Properties ◽  
Excellent Thermal Stability ◽  
Glass Fiber Reinforced ◽  
Halogen Free

Abstract Halogen-free flame retardants are ideal plastic additives that meet carbon neutral requirements. In this work, halogen free flame retardant with glass fiber reinforced PA66/PPO composites were prepared by using coated red phosphorus (FRM-150B) and phosphorus-silicon flame retardant (WR6002). The mechanical properties, heat resistance, friction and wear properties and flame retardancy were carried out to evaluate the performances of composites using as structural parts that require heat resistance, dimensional stability and accuracy. It was found that the friction coefficient and wear volume of the composites were improved with the contents of glass fiber increased, as a result, PA66/PPO composites was obtained with excellent comprehensive performance when the content of compatilizer is 7%, the glass fiber was 30%, the content of FRM is 8% and the phosphorous-silicon flame retardant is 16%. The flame retardant effect of FRM-150B and WR6002 in PA66/PPO was presented in the condensed phase, the results showed that the composite material with 16% WR6002 forms a carbon layer with excellent thermal stability. On the other hand, the mechanical properties of composites were hardly affected, has important prospects in automotive components and household appliances

Sign in / Sign up

Export Citation Format

Share Document