Microencapsulated flame retardants.
MFRs represent a cutting-edge advancement in fire-resistant materials, offering several advantages over conventional counterparts. Additionally, recent strides in this field focused on refining shell materials. This refinement aims to optimize the performance of microencapsulated additives like ammonium polyphosphate (APP) in polypropylene (PP) and red phosphorus (RP) in epoxy resin (EP).
You can also read: Exploring Depths: Innovations in Additive Microencapsulation
MFRs offer a versatile and effective solution for enhancing the fire resistance of polymer materials. Here are their advantages:
Given the myriad advantages of MFRs, researchers and companies are continuously exploring innovative solutions. This continuous effort leads to ongoing innovation. Here are some of the latest advancements:
Poor thermal stability and high flammability pose limitations that hinder the widespread use of PP in electric and electronic applications. In response to these challenges, researchers investigated microencapsulated ammonium polyphosphate (MCAPP) with a novel polyurethane (PU) shell. The incorporation of PU shell yielded a range of benefits, as highlighted by their findings. It demonstrates its effectiveness in bolstering the flame retardancy of PP.
The research conducted by Budapest University of Technology and Economics centered on the preparation of microencapsulated ammonium polyphosphate (MCAPP) utilizing various polyol components to develop an innovative polyurethane (PU) shell. The outcomes of the study reveal that the PU shell:
To enhance the flame retardance of epoxy resin (EP), researchers employed microencapsulated red phosphorus (MRP) coated with environmentally friendly materials. They utilized chitosan (CH) and a chitosan/lignosulfonate composite (CH/LS) as shell materials. The use of these shell structures significantly improved the interfacial compatibility between RP and organic substrates. Tensile strain tests and scanning electron microscope (SEM) observations confirmed this improvement.
The core-shell structure of RP@CH/LS, forming an integrated intumescent flame retardance (IFR) system, exhibited promising results in enhancing the flame retardance of EP. This enhancement occurred without the need for additional synergists. The use of CH/LS composite as a shell structure holds considerable industrial value. It also presents promising application prospects due to the abundance and low cost of CH and LS.
Overall, the advancements in microencapsulated flame retardants (MFRs) offer a transformative solution to enhance fire protection for polymer materials. As researchers and industries continue to explore new possibilities. MFRs hold tremendous potential for further revolutionizing fire protection in diverse applications.
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