Characterization: ACC34 thinner is a low viscosity silicone diluent that can be employed as viscosity modifier for many 1- Part RTV sealants, and conformal coatings. It is available as the standard version and an optional UV fluorescing version (ACC34UV). The ACC34UV version is especially recommended for higher dilution ratios of ACC15, 16 and 17 to maintain a high level of UV fluorescence ACC34 thinner is volatile. It will be lost slowly at room temperature from a thin section of cured silicone rubber or coating, but is readily removed at temperatures from 80°C to 150°C. In the case of 1- Part RTV's this heating cycle is best carried out after 8 hours of curing, for ACC16, the heating cycle can begin after 90 minutes of curing and for ACC17 the heating cycle can begin after 16 to 40 minutes of curing, depending on the dilution ratio. ACC34 thinner has not been classified as a Volatile Organic Compound (VOC) and no legislation to this effect is expected. It is a cosmetically approved ingredient and is a much safer choice than conventional organic solvents for many reasons, a few of which are:- wide liquid temperature range
- odourless
- not regarded as an environmental hazard
- extremely low toxicity (oral LD50 = 35,000 mg/kg)
- compatible with virtually all silicones
- very low surface tension (<18 N/m) which enhances spreading of films.
- good rate of evaporation considering its high boiling point (205°C), due to unusually low heat of vaporisation.
- high Flash Point (not classified as flammable)
Information provided by CHT Group |
