What is Halogenated Polyester
Halogenated polyester is a type of polyester material that incorporates halogen elements, such as fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and Atastatium (At). In the PCB industry, halogenated polyester is commonly utilized as a flame retardant in circuit boards. Halogens, particularly chlorine and bromine, are known for their effective flame retardancy properties. When halogen-containing flame retardants burn, they emit highly toxic gases that can be detrimental to both the environment and human health.
Due to the potential risks associated with halogenated flame retardants, regulations have been implemented to restrict the use of certain substances in electronic materials. For instance, the Restriction of Hazardous Substances Directive (RoHS) prohibits the inclusion of polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in electronic materials. Additionally, tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCD or HBCDD) have also been added to the list of banned substances.
These regulations aim to promote sustainable development and reduce the environmental and health risks associated with halogenated flame retardants. By limiting the use of these substances, the PCB industry can work towards creating safer and more environmentally friendly circuit boards.