Functional Materials

Acicular Titanium Dioxide, FTL series

Characteristics of Acicular Titanium Dioxide, FTL series

ISK has developed rutile-type acicular titanium dioxide by its own proprietary technology.

Utilizing its unique shape and hardness, the acicular titanium dioxide has been applied for reinforcing materials in plastics.

Due to physical strength of titanium dioxide, it can be hardly broken under strong mixing with resins.

Due to its small size and high aspect ratio, it is expected to be applied for small and thin devices to reinforce them.

Owing to neutral pH and extremely low impurities, it can be applied for various resins.

(Main Applications)

Reinforcement of plastics and ceramics
Paint, paper, rubber and catalysts
Friction material, filtration material

Photo 1 Electron micrographs of FTL series

Photo: FTL-100

Photo: FTL-200

Photo: FTL-300

Table 1 Grade list

  FTL-100 FTL-110 FTL-200 FTL-300
Appearance White, Acicular crystal
Length1)(µm) 1.68 2.86 5.15
Diameter1)(µm) 0.13 0.21 0.27
Composition (Crystal form) TiO2 (rutile)
Specific Gravity 4.2
Specific Surface Area2)(m²/g) 10~15 10~20 7~10 5~7
Oil Absorption (g/100g) 35~60 30~50 35~60 35~60
pH 6~8 6.5~8 6~8 6~8

1) volume-surface mean diameter measured with an image analyzer

2) conventional BET method

Fig.1 Reinforcing effect of acicular titanium dioxide (in PA resin)

Graph: PA type, Tensile test

Graph: PA type, Tensile test, Modulus of elasticity

Table 2 Physical strength of acicular titanium dioxide

As it is difficult to evaluate strength of the very small particles of acicular titanium dioxide, Young's modulus of titanium dioxide is compared with other materials in the following table.

  Quartz Potassium Titanate Titanium Dioxide (Rutile)
Young's modulus (GPa) 52~111 27.6 289.4

It is considered that strength of acicular titanium dioxide is larger than potassium titanate by ten times and quartz by 3-5 times.