Luperox? 231XL40-SP It is a coke protection product, based onLuperox? 231XL40It is 40% with calcium carbonate and silica as the dispersing carrier.It belongs to the peroxide condensate organic peroxide, and its chemical molecular structure is 1,1'-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, CAS No. 6731-36-8, and its molecular weight is 302.4 g/mol.
Main properties::
- Physical form: powder
- Peroxide content: 40%
- Active oxygen content: 4.2%
Scorch protection: Luperox? 231XL40-SP provides superior scorch protection and solves the problems associated with traditional scorch protection. The advantages are:
- Quickly traps free radicals and provides excellent char protection.
- Maintains a comparable level of cross-linking without reducing cross-linking density.
performances: Comparison of the vulcanization performance of Luperox? 231XL40 and Luperox? 231XL40-SP in EPDM compounds:
- equivalent vulcanization time (t90) and maximum torque (MH).
- At 110°C, Luperox? 231XL40-SP has 5 times the scorch protection time (ts05) of Luperox? 231XL40.
vantage: Good scorch protection improves processing efficiency, including:
- Improved mixing efficiency can be achieved by increasing the mixing rate to make the rubber mix more homogeneous.
- Reduce the amount of antioxidant, SP additives can also be used as antioxidants in rubber formulations.
- Scorch protection reduces downtime to clean equipment and increases production time during the production process.
Vulcanization accelerators: Luperox? 231XL40-SP can be used as a vulcanization accelerator. When mixed with Luperox? F40-SP, the vulcanization rate is faster than with Luperox? F40 alone and maintains the same crosslink density and good scorch protection.
major application: Luperox? 231XL40-SP is mainly used as a vulcanizing agent for the following products:
- Hoses and window frames
- Rubber seals and gaskets
- Technical Products
- wire and cable
- golf center
- EPDM and EVA soles
additive quantity: Typical additions are listed in the table below:
- EPM: 6-15 phr
- EPDM: 6-15 phr
- EVA: 3-6 phr
decomposition product: In inert media, the major decomposition products of Luperox? 231XL40-SP include acetone, tert-butanol, methane, carbon dioxide, trimethylcyclohexane and 3,3,5-trimethylcyclohexanone. Refer to MSDS for detailed information on safety, handling, storage and transportation.