Titanium Dioxide Nanopowder (TiO2) Purity 99.9 % Size 20 nm

Catalog NumberACMA00023566

CategoryNano Flame Retardant

Molecular Weight	79.87 g/mol
Purity	0.999
Density	4.26 g/cm³
Solubility	Insoluble in water, dilute acids, organic acids.
Appearance	White Powder
Application	Raw material for catalyst substrates with high thermal and hydrothermal stability Effective catalyst substrate with good thermal and hydrothermal stability Convenient for the construction of dye-sensitized solar cells Effective and overdyable heat stabilizer for silicone vulcanizates at process temperatures to more than 200 °C
Packaging	100g, 500g, 1kg
Particle Size	20 nm

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Case Study

Titanium Dioxide Nanopowder Modified Flame Retardant Coating for Atmospheric Metallic
Substrates

Beheshti, Amir, et al. Powder technology, 2015, 269, 22-29.

In this work, different amounts (1wt%-20wt%) of titanium dioxide nanopowder (nano-TiO2) and eggshell micropowder (ESP) were used as modifiers to improve the fire resistance of intumescent fire retardant coatings. The results showed that the addition of nanopowders effectively improved the performance of intumescent coatings. Specifically, the addition of nano-TiO2 and ESP can increase the residual amount of coatings, improve the oxidation resistance of the char layer at high temperatures, and improve the surface structure of the char layer. The improved intumescent flame retardant coating formulation is expected to be used to protect steel structures from fire.
Preparation of nano-TiO2/ESP intumescent coatings
· Initially, acrylic resin was dissolved in toluene. Subsequently, APP, PER, and MEL were incorporated into this solution and subjected to ultrasonic dispersion at 30 °C for 2 hours to achieve a uniform mixture.
· To create nanobased coatings, TiO2 nanopowder and intumescent additives were introduced to the resin-toluene solution, which was then sonicated for 4 hours at 30 °C. For mixtures containing ESP, the sonicated solution was vigorously mixed for an additional 2 hours using a high-speed mixer set at 2000 rpm.
· The resulting coatings were applied onto flat steel plates made of ST-37 low carbon steel and allowed to dry at room temperature. This entire procedure was repeated 6 to 8 times until a dry film thickness of 1 ± 0.1 mm was attained.

Effect of TiO2 Nanoparticles on Flame-Retardant Thermoplastic Polyurethane Composites

Chen, Xilei, et al. Journal of Thermal Analysis and Calorimetry, 2018, 132, 251-261.

TiO2 nanoparticles were uniformly dispersed in thermoplastic polyurethane/ammonium polyphosphate (TPU/APP) composites through masterbatch-melt blending technology, and their effects on performance were studied. The results show that TiO2 particles can enhance the compatibility and dispersibility of APP in TPU, and improve the viscoelastic properties, flame retardancy and thermal stability of TPU/APP composites.
Performance Characterization and Results
· TEM analysis confirmed the size range of TiO2 nanoparticles to be 200-400 nm.
· SEM images indicated a compact and smooth surface for APP/TiO2 composites, suggesting improved compatibility between APP and the TPU matrix due to TiO2. Enhanced mechanical properties were attributed to interfacial adhesion between metal ions and polymer molecules.
· DMA results revealed that the TiO2 particle network hindered polymer segment movement. Furthermore, this network structure significantly influenced combustion behavior. Moderate TiO2 addition improved char residue structure through nano-scale Ti-O-Ti network formation, reducing heat and smoke release.
· TGA analysis showed earlier thermal decomposition for flame-retardant TPU compared to pure TPU. The addition of 0.5 wt% TiO2 particles to TPU/APP composites resulted in a carbonaceous layer with excellent barrier properties within the TPU matrix.

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