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| Hubersil 1743 |
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| Amorphous silica, precipitated |
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Hubersil 162LR, 1633, and 1743 are fine white, milled, precipitated amorphous silicas.
They are highly reinforcing fillers for use in synthetic and natural rubber compounding.
These grades have a smaller particle size than the spray-dried Hubersils: 99.5% of the these milled fillers must pass through a 325 mesh sieve.
Excellent dispersion of fine particle sized silicas improve physical properties and clarity.
Precipitated amorphous silica increases hardness, tensile strength, abrasion and tear resistance.
For mechanical rubber goods, Hubersil can be used as the primary filler or in combination with carbon black.
White, colored and translucent articles are often based on Hubersil as the key reinforcing filler.
In tire applications, these silicas improve rolling resistance, flex fatigue and enhance traction.
In adhesives compounding, silica provides an additional method of promoting improved adhesion, as well as providing thixotrophy and reinforcement.
Hubersils are universally applied to provide increased abrasion resistance, green strength and tear resistance.
Other molded rubber goods where translucency and excellent dispersion are required, for example shoe soles and elastic bands, have found these silicas especially useful. |
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Drying Loss - 105'C (%): 5.5
5% pH: 6.9
Surface area (m2/g), BET: 175
Surface Area (m2/g), CTAB: 160
Specific Gravity: 2.0
SiO2, anhydrous bone dry basis, (%): 98
Oil Absorption, (linseed cc/100g): 200 |
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