Search

Moving from Descriptive to Prescriptive Analytics Using AI: Success Stories in Papermaking, TAPPICon24

Predictive advisory solutions for chemistry management, control, and optimization, TAPPICon24

Why integrating an IIoT strategy is critical to a competitive environmental effluent system strategy, TAPPICon24

Non-Wood Fiber Sources for Tissue and Sustainability, TAPPICon24

Leveraging Features of MPC for Optimizing Paper Machine Profitability, TAPPICon24

Maximizing Efficiency in Paper Manufacturing Through Digitization, TAPPICon24, TAPPICon24

Investigating the Effect of Modified Cellulosic Fibers on Barrier and Functional Properties for Sustainable Packaging, TAPPICon24

The Power of Charges: Exploring Electrification Opportunities for Decarbonizing the Pulp and Paper Industry, TAPPICon24

Unlocking the Potential of Microfibrillated Cellulose for High-Barrier Sustainable Packaging Films,TAPPICon24

Study on the effect of aluminum diethyl phosphinate in synergy with ammonium polyphosphate on the flame retardancy of cellulose paper, TAPPI Journal April 2025

ABSTRACT: This paper involved the synergistic incorporation of ammonium polyphosphate (APP) and diethyl aluminum phosphinate (AlPi) as flame-retardant fillers for producing flame-retardant paper. The research revealed that APPs were square particles with a smooth surface, and their solubility was 0.29 g/100 mL at 20°C, which increased to 4.12 g/100 mL at 60°C. The surfaces of AlPis were rough and irregular. The solubility of AlPi was 0.023 g/100 mL at 20°C, and the solubility remained stable when the temperature increased. The addition of AlPi had a minor influence on the pulp beating degree. The tensile strength of kraft/APP/AlPi decreased with the increase of the AlPi addition. For a paper with 20 wt% APP and 0 wt% AlPi, the limiting oxygen index (LOI) value was 27.2%, and it burned completely at the eighth second during vertical combustion. When the AlPi additive content increased to 20 wt%, its LOI value increased to 32.2%, and the vertical combustion self-extinguished as soon as the flame was removed. Scanning electron microscopy (SEM) showed that the char residue of the kraft/APP/AlPi had a more complete fiber network structure than that of kraft/APP. The Raman spectroscopy indicated that the area ratio of the D (amorphous phase; disordered graphite vibration) band to the G (crystal phase; graphite carbon vibration) band (ID/ IG) ratio of kraft/APP/AlPi was lower than that of kraft/APP, meaning that the graphitization degree of the char residue of kraft/APP/AlPi was higher than that of kraft/APP, which indicated the kraft/APP/AlPi had better flame retardancy.