A novel phytic acid based flame retardant to improve flame retardancy, hydrophobicity and mechanical properties of linear low‐density polyethylene

Abstract

Exploiting high phosphorus content of phytic acid, it was grafted onto magnesium hydroxide (MH) by neutralization reaction to obtain MGPA, a flame retardant. A current study investigated the effect of MGPA on hydrophobicity, flame retardancy, and mechanical properties of MGPA-linear lowdensity polyethylene (LLDPE) composites. The LLDPE composite with 50 parts of MGPA has the better flame retardancy and thermal stability with a limiting oxygen index of 23.3%, which is higher than that of neat LLDPE (17%). In addition, MGPA could effectively promoted LLDPE to form a continuous and compact char residue during combustion, which reduce the peak of heat release rate and total smoke production value of LLDPE composite by 70% and 36%, respectively, and the char residue rate increase to 67.5%. Furthermore, the maximum of loss-rate showed by LLDPE composite with MGPA reduce to 1.25%/min while the value of LLDPE composite with MH is 1.8%/min. Meanwhile, the LLDPE composite with MGPA show remarkable elongation at break and hydrophobicity, which are 398% and 99 , respectively. In addition, this study presents a substantial flame retardancy and interfacial compatibility of MGPA for extending the applications of flame-retardant LLDPE composites.

Environment friendly biomass composite aerogel with reinforced mechanical properties for thermal insulation and flame retardancy application

“…Moreover, some studies have found that PA also has a certain promoting effect on the thermal insulation performance of biomass aerogels. The addition of PA can increase the porosity and pore size distribution of the aerogel, improve the pore structure of the aerogel, thereby reducing heat conduction and convection, and enhancing the thermal insulation performance of the aerogel 21,26,27 . In summary, PA demonstrates promising application potential in the research of thermal insulation and flame retardancy of biomass aerogels.…”

“…Phytic acid, as a natural organic acid, has attracted extensive attention in the research of thermal insulation and flame retardancy of biomass aerogels in recent years. Phytic acid possesses multiple phosphate groups, which can form a layered structure in the aerogel, effectively preventing the spread of flames and improving the flame retardant performance of the aerogel 21 . Gao et al 22 prepared a new bio‐based phytate PHYPI by performing the salt formation reaction of phytic acid (PA) and piperazine, which showed good flame‐retardant effects.…”

“…Phytic acid possesses multiple phosphate groups, which can form a layered structure in the aerogel, effectively preventing the spread of flames and improving the flame retardant performance of the aerogel. 21 Gao et al 22 prepared a new bio-based phytate PHYPI by performing the salt formation reaction of phytic acid (PA) and piperazine, which showed good flame-retardant effects. Sykam et al 23 reviewed PA as a bio-based flame retardant for cotton and wool fabrics and demonstrated that PA can imparts flame retardant properties to cotton and wool fabrics.…”

Intercalation of silsesquioxane surfactant in layered double hydroxide for silicone rubber composites: Enhancing interfacial interactions toward improvement of mechanical, thermal, and gas barrier properties

“…Moreover, the superhydrophilicity of LDHs results in agglomeration and poor distribution in polymer matrices, reducing the mechanical properties of the materials. [14][15][16] In the past decade, various approaches have been implemented to improve the dispersion of LDHs, including surface chemical modification, interlayer intercalation, and exfoliation of LDHs. Among these methods, surface decoration or modification with organic anions can significantly improve the dispersion of LDH nanoparticles within polymer matrices.…”

“…However, LDHs are difficult to delaminate because of the high charge density of the layers and anion content. Moreover, the superhydrophilicity of LDHs results in agglomeration and poor distribution in polymer matrices, reducing the mechanical properties of the materials 14–16 …”