吴江Acicular wollastonite powder

HARDNESS: 4.5;                                  ph: 10

ASPECT RATIO：13:1

PACKING：25KGS P.P WOVEN BAG.

Application: Friction material, replacing asbestos as ground asbestos friction material, improving braking effect, sensitivity, smoothness, reducing noise, cracking and calcification. It helps to enhance the mechanical strength and thermal stability of ceramics, enabling honeycomb ceramics to withstand harsh working conditions such as high temperatures and high pressures.

Wollastonite ores of triclinic crystalline system have very noticeable acicular and long fiber structures. Our special processing technique enables the retention of this unique acicular structure and the production of high slenderness ratio acicular wollastonite powder。 

As wollastonite is natural, nontoxic, odorless and radiation free, high slenderness ratio acicular wollastonite powder from long fiber wollastonite ores has become a new environment-friend building material as a substitute for short fiber asbestos or short fiber glass fiber that is harmful to the human body. Presently it is widely applied to calcium silicate board, fiber cement products, sound absorbing board and new multifunctional composite fireproofing sheeting. Calcium silicate board and fireproofing sheeting incorporating acicular wollastonite powder provide much higher impact, flexural and wear strengths and are widely used in Japan, South Korea, Mainland China and Taiwan。

• engineering technical plastics (PA, PU etc.) for the automotive industry

• fluoro elastomer e.g. for oil sealings

• powder coatings

• friction linings

• corrosion protection i.e. EP/PUR aqueous systems)

Acicular wollastonite technical specification:

SiO2: 50.5%; CaO: 45-47%; Fe2O3: 0.4%max;

P: 0.01%max; S: 0.01%max; Aspect ratio: 10:1 to 30:1

Moisture: 0.5%max; L.O.I.: 3%max

Mesh: 60/100/200/325/400/1250/3000 mesh 95-98% min passing through.

Packing: in plastic woven bag of about 25/50kgs net or in 1 m/t bag as required.