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For flame-resistant electrical and electronic enclosures, polycarbonate and poly(acrylonitride butadiene styrene) (ABS) mixes are frequently employed.
Tetraphenyl resorcinol diphosphate and tetraphenyl bisphenol-A diphosphonate are the two main flame retardants now utilised in the blends (both with oligomers).
The formulation categories of fire-retardant (FR) resins include halogenated, inorganic, organophosphorus, and nitrogen-containing FR.
These resin systems are included in the two main halogenated FR and halogen-free FR classes of FR. Engineering plastics, which include polycarbonate and PC resin, are plastics that are specifically created for improved strength, temperature resistance, and other mechanical qualities.
The UL 94 standard, which is called “Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances,” should be discussed first. The manufacturer lists LEXAN, which is the LEXAN general-purpose polycarbonate sheet, as “flame-resistant.”
Chemicals known as flame retardants are added to plastics to stop, delay, or slow down combustion, reduce smoke production, and/or avoid melt collapse (anti dripping).
To prevent the combustion and burning of plastics, these additives are frequently found in a wide range of daily products.
By polymerizing phosgene and bisphenol A (C15H16O2), polycarbonates are created (COCl2). Polycarbonate melts between 260 and 320 degrees Celsius and performs effectively throughout a broad temperature range. Its closest neighbours, ABS and PVC, have an impact strength that is nearly twice as high.
The Global Flame retardant grade polycarbonate resin market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
Makrolon polycarbonate is incredibly durable, light, transparent, and impact resistant—even at subfreezing temperatures. Additionally, it has a high glass transition temperature, is easily moldable, and has great heat resistance.
Makrolon is a thermoplastic with a wide range of uses, including medical devices, automobile headlamps, sporting goods, electronics, eyewear, architectural glazing, and LED lighting.
Covestro offers a wide range of Makrolon® polycarbonate resins that can be used for injection moulding, extrusion, and blow moulding, including general-purpose, lighting, medical and food contact, flame-retardant, impact-modified, and glass-fiber reinforced grades.
Polycarbonate, which is stronger and lighter than glass, also reduces energy use and CO2 emissions. All of this clarifies why Makrolon® has been relied upon for years and continues to open the door for new product developments.
