Cabot Introduces Treated Fumed Silica for Bonding Paste Applications

Cabot has released new treated fumed silica in the bonding paste market. This highly performing CAB-O-SIL ULTRABOND 4740 is used for bonding paste applications. It is mostly used in the manufacturing of windmill blades for the turbine generators.

Generally, two pieces are present in a windmill blade. The length and weight of the today’s blades can be up to 80 m and 15 t, respectively. A bonding paste integrates these two pieces.

Increasing the length of a windmill blade is a challenge in order to maximize the capacity of wind energy. The blades can be of high performance and more efficiency, only if it is stronger. A blade’s life can be expanded through a strong bonding paste, which enables the production of long blades using more sag-resistant composites.

CAB-O-SIL ULTRABOND 4740 fumed silica provides 25% to 30% of high sag resistance, when compared with present industry solutions. This enhanced performance has eliminated the requirement of the bonding paste clients to over-design present solutions in order to reach stable sag resistance.

The fumed silica in the bonding paste formulation is decreased in the new product by 10% to 15% and the product offers key benefits for simple applications ensuring low viscosity over the blades.

The processing time for fumed silica in CAB-O-SIL ULTRABOND 4740 is decreased by up to 50% in the manufacturing phase, when compared to other competitive market products. This feature largely decreases the total cycle time.

CAB-O-SIL ULTRABOND 4740 was specially made for viscosity management and sag resistance of bonding pastes.

Source: http://www.cabot-corp.com/

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