Reaction product of organosilane Dynasylan® VTEO (Vinyltriethoxysilane) and ULTRASIL® VN 2 (specific surface area 130 m2/g). The production consists of one hundred parts of ULTRASIL® VN 2 modified with eight parts of Dynasylan® VTEO. Since the reaction between the organosilane and the silica is complete, COUPSIL® VP 6508 offers the advantage of a homogeneous modification with low moisture adsorption during storage and significantly lower development of ethanol during mixing and processing.
COUPSIL® VP 6508 is used as a reinforcing filler in rubber compounds. It reacts with unsaturated polymers during vulcanization under formation of covalent bonds. This imparts greater tensile strength, higher moduli, reduced compression set, increased abrasion resistance, and optimized dynamic properties.
COUPSIL® VP 6508 is used in peroxide-cured rubber compounds in combination with white fillers and where optimum technical properties are required.
Typical Applications
Benefits at a glance
Great advantages of the COUPSIL® family:
- Pre-reacted products which eliminate the equipment-related complex in-situ modification of silica in the mixer.
- Reaction in presence of accelerators by forming rubber-to-filler bonds during vulcanization.
- Enabling tear and abrasion resistance on an elevated level = as well as excellent dynamic properties
Product Details
Further Information
Storage:
Forms of supply:
12,5 kg paper bags – 375 kg wooden pallet
400 kg FIBC – wooden pallet