Tert-butyl peroxybenzoate is the most common commercially available peroxide ester, with the molecular formula C11H14O3. It is a colorless to slightly yellow liquid with a slight aromatic odor. Tert-butyl peroxybenzoate is a strong oxidant that can cause combustion when heated and stored in a cool and ventilated warehouse; Keep away from sparks and heat sources, and prevent direct sunlight. It should be stored separately from reducing agents and acid-base substances, and mixed storage should be avoided.
The main application fields and brief introduction of Tert-butyl peroxybenzoate are as follows:
1) Unsaturated polyester resin (UPR) industry. In addition to being used as handicrafts, artificial stones, coatings (including flooring), and buttons, over 60% of UPR in China is used for fiberglass composite materials. Fiberglass reinforced plastic composite materials are mainly used in vehicle components, chemical pipes, tanks and grilles, ships, fan supporting blades and hood, cooling towers and water treatment engineering, corrugated tiles, decorative panels, basins, etc.
The main types of organic peroxides used in unsaturated polyester resin include methyl ethyl ketone peroxide (MEKP), benzoyl peroxide (BPO), Tert-butyl peroxybenzoate (TBPB), etc. Among them, Tert-butyl peroxybenzoate (TBPB) accounts for about 5-10%, and the addition ratio is generally 1-3%.
2) Polystyrene (PS) industry. PS has excellent insulation, insulation, and transparency. It is a polymer formed by polymerization of styrene monomers, including ordinary polystyrene, expanded polystyrene (EPS), and high impact polystyrene (HIPS). The packaging and electronics industry are still the main application areas of PS in China, with EPS mainly consumed in packaging materials.
The organic peroxide products used in the polystyrene industry mainly include benzoyl peroxide (BPO), tert butyl benzoate peroxide (TBPB), 1,1-bis (tert butylperoxy) -3,3,5-trimethylcyclohexane (TMCH), and 1,1-bis (tert butylperoxy) cyclohexane (CH). About 20% of them choose to add Tert-butyl peroxybenzoate (TBPB); The addition ratio of Tert-butyl peroxybenzoate (TBPB) is usually around 0.3%.
3) Acrylic resin industry. Polymethyl methacrylate (PMMA), commonly known as organic glass, is a transparent material obtained by radical polymerization of methyl methacrylate, which has excellent comprehensive properties such as excellent transparency. PMMA also has good dielectric properties, electrical insulation, arc resistance, chemical reagent resistance, solvent resistance, weather resistance, and certain heat and cold resistance, and is widely used in fields such as automobiles, advertising, medicine, communication, and construction.
The main organic peroxides used in the acrylic resin industry are benzoyl peroxide (BPO) and Tert-butyl peroxybenzoate (TBPB). Among them, Tert-butyl peroxybenzoate (TBPB) accounts for about 15% of the total dosage, and the addition ratio is generally around 1-4.5%.