Benzoyl Peroxides Plasperox BP-75 Plasperox BP-50

MEK Peroxides Plasperox K-7 Plasperox K-8 Plasperox K-9

Tertiary Butyl Range (A) Hydro Peroxides Plasperox TBH-72 Plasperox TBH-80 (B) Per Benzoate Plasperox TBP-50 Plasperox TBP-98 (C) Di-Tertiary Butyl Plasperox DTB

Other Peroxides Plasperox 2-AP Plasperox K-20 Plasperox TBPO Plasperox TB2P

 

Applications:

Polyester Curing :

Curing agent for UP resins.  Temperature range : 130 – 160⁰ C.  Dosage : 2-4%  as supplied.  Shelf – Life (gel time of resin and peroxide) at ambivalent temperature – several months, depending on resin type.  Sensitive to some fillers and pigments, as well as to cobalt salts or tertiary amines.  Shelf life can be prolonged considerably by adding 0.1 - 0.3 %  inhibitor. 

Curing Characteristics :

The optimum temperatures range for Hot Press Moulding is 130 – 160⁰ C. 

In the range of 85 – 90⁰ C (Kick off temperature),  the curing rate is low, unless there is reaction exotherm eg. within a heat rationing mould.  Really short cure times of 1 – 3 minutes can be achieved only above 120⁰ C. 

    Processing Methods :

Mainly hot press moulding of sheet moulding compounds (SMC) or dough moulding compounds (DMC), as well as dripping into baths of insulating varnishes. 

Further information in suitable curing agents, influence of temperature and on Hot Press Moulding can be obtained on special request.

 

SAFE HANDLING  :

 Safety Measures :

When working with PLASPEROX TBP – 50, always wear eye protection and protective gloves.  Do not eat, drink or smoke.  Avoid any contact with eyes and skin, wash thoroughly with soap and water.  If splashed in the eyes, rinse immediately with plenty of water and seek medical attention.   Extinguish fire involving peroxides from a safe distance using copious amounts of water.

 Mixing / Dissolving :

Mix in peroxides gradually in small amounts.  In this way localized accumulations of peroxides are avoided especially in highly viscous paste or powder mixtures.  Avoid excessive friction which can cause local overheating.  Never mix peroxides directly with accelerator, activators or other reducing agents (risk of explosion).