The tert butyl peroxy 2 ethylhexanoate is a colorless transparent liquid, which is a kind of ester organic peroxide.
TBPO is a medium-temperature initiator that offers higher activity and efficiency compared to BPO (Benzoyl Peroxide) in styrene systems. Its primary advantage is providing a more controlled reaction rate, which significantly reduces the risk of runaway polymerization. Furthermore, TBPO contributes to superior polymer color stability and reduces residual monomer levels, making it the preferred choice for manufacturing high-quality, high-clarity resins.
Due to its Self-Accelerating Decomposition Temperature (SADT) of 35°C, TBPO is thermally unstable. It must be stored in a cool, well-ventilated area with the temperature strictly maintained below 20°C (68°F). For international or long-distance logistics, refrigerated containers (cold chain) are mandatory. Storing it above the recommended temperature can lead to a loss of active oxygen content and potentially hazardous decomposition.
TBPO is highly effective as a high-temperature curing agent for Unsaturated Polyester (UP) resins, typically within the 120-160°C range. It is particularly optimized for SMC (Sheet Molding Compound) and BMC (Bulk Molding Compound) hot-press processes. Its 10-hour half-life temperature is approximately 73°C, ensuring balanced reactivity during the curing cycle.
