scholarly journals Microstructure design of polypropylene/expandable graphite flame retardant composites toughened by the polyolefin elastomer for enhancing its mechanical properties

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 6022-6034 ◽  
Author(s):  
Ruilong Li ◽  
Na Wang ◽  
Zhuyu Bai ◽  
Shaopeng Chen ◽  
Jianbing Guo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Polymer Composites ◽  
Expandable Graphite ◽  
Microstructure Design ◽  
Polyolefin Elastomer

The enhanced toughness of flame-retardant polymer composites is still a big challenge due to the deterioration of their mechanical properties.

scholarly journals Simultaneously enhanced mechanical properties and flame retardancy of UHMWPE with polydopamine-coated expandable graphite

RSC Advances ◽  
2019 ◽  
Vol 9 (37) ◽  
pp. 21371-21380 ◽  
Author(s):  
Huaming Wang ◽  
Jingshi Cao ◽  
Fubin Luo ◽  
Changlin Cao ◽  
Qingrong Qian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Flame Retardancy ◽  
Expandable Graphite

The potential prospect of expandable graphite (EG) in the development of polymer composites is severely limited by required large additions and poor interface compatibility with the polymer.

Morphology, thermal and dynamic mechanical properties of poly(lactic acid)/expandable graphite (PLA/EG) flame retardant composites

2017 ◽  
Vol 32 (1) ◽  
pp. 89-107 ◽  
Author(s):  
Mfiso Emmanuel Mngomezulu ◽  
Adriaan Stephanus Luyt ◽  
Maya Jacob John
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Glass Transition ◽  
Flame Retardant ◽  
Dynamic Mechanical Properties ◽  
Poly Lactic Acid ◽  
Expandable Graphite ◽  
Damping Factor ◽  
Melt Mixing ◽  
Dynamic Mechanical

This work reports on the effect of expandable graphite (EG) on the morphology, thermal and dynamic mechanical properties of flame retardant poly(lactic acid) (PLA)/EG composites. The composites were prepared by melt-mixing and their structure, morphology, melting and crystallization behaviour, as well as their dynamic mechanical properties, were investigated. It was found that graphite layers still existed in an aggregate structure with poor filler dispersion resulting in a lack of interfacial adhesion between EG and the PLA matrix. The presence of EG did not favour the crystallization of PLA, increased the glass transition temperature and showed a reduction in the crystallinity of the composites. The composites with higher filler contents showed enhanced storage and loss moduli. The glass transition temperatures from the loss modulus and damping factor curves varied inconsistently with EG content. The use of commercial EG as filler in PLA can preserve the thermal properties of injection moulding grade Cereplast PLA.

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