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PVI is an effective scorch inhibitor with almost all types of accelerators and in all types of sulphur cured diene rubber based compounds.
Crystaline Powder
PVI is an ideal pre vulcanization (scorch) inhibitor for NR, IR, NR-BR blend, SBR, NR-SBR, SBR-BR blends, NBR, CR and other diene rubber based accelerated sulphur cured compounds.
The product may be used in natural rubber and synthetic rubber. It may protect effectively the rubber material from scorching during Processing, So that to make it possible for extruder and calender to be running at a high temperature and high speed and improve the production capacity of vulcanizer. The product also can improve the storage stabilization of the rubber material, protect natural vulcanization during storage. It has reclaimaion function for rubber material, which bearing high heating or with dangers of scorching.
PVI does not cause any detrimental effect on the vulcanizate properties such as tensile strength, modulus values, and resilience / heat build up, compression set or permanent set, ozone resistance and hot air aged vulcanizate properties when used at optimum dosage.
PVI does not cause contact or migration staining but can slightly discolor bright white rubber products.
PVI can permit addition of curatives at an early stage of mixing for better dispersion of curatives, reduced mixing cycle time, reduced power consumption, reduced labor and capital investment costs.
PVI use of higher processing speeds and temperatures during mixing, calendaring, extrusion, etc. for increased productivity and reduced processing cost.
PVI use of higher injection temperatures and shorter cure cycles for increased productivity.
PVI recovery of rubber compounds with marginal processing safety and recovery of partially scorched compound for scrap elimination.
PVI improve the storage stability of fully compounded stocks at ambient temperatures.
Chemical name: N-(cyclhexyl thio) phthalimide
Molecular Formula: C14H15O2NS
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