A way to halogenfree, flame‐retardant laminates for electronic applications

Abstract

L Due to legal specifications and standards flame retardant polymers are used as insulating materials for electrical cable and wire, as casing and constructive materials in electrical engineering, as encapsulation materials for electronic components and in laminates for printed circuit boards. The most effective way to achieve flame retardancy is by using halogenated organic materials. Because of ecological reasons a major trend is the development of halogenfree non-corrosive flame retardant polymer materials. On the laminate side Siemens R&D developed a way to halogenfree laminates meeting the UL 94V-0 specification.Polymers are finding widespread use in electrical engineering and electronics as insulating materials, as construction and housing materials and as encapsulating and protecting materials as well. In the fiscal year 89/90 the total consumption of polymeric materials within Siemens was well beyond 100.000 t, of which more than 20.000 t wgre flame retardant. The electrical and electronic industries are major consumers of flame retardant polymers. Flame retardancy is specified in those areas of electrical engineering and electronics where safety considerations are of prime importance, such as for instance manprotection and fail-safe applications, and whenever high value electronic components need to be protected, such as in printed circuit boards. In the case of fai'lure or fire due to thermal overload, short circuit or remote action of fire, the flame retardant polymeric materials should be difficult to ignite not propagate a fire be self-extinguishing after removal of the igniting source. 0 1993 Huthig & Wepf Verlag, Base1CCC 0258-0322/93/$04.00

A novel approach for development of printed circuit board from biofiber based composites

“…Thus, most of these resins cause environmental and health issuses during manufacturing and recycling which has made the investigators to look for alternative flame retardants. [1,[4][5][6] The methods employed in salvaging of E-wastes and to reminisce the waste metal and parts have found to be scientifically improper causing harsh environmental problems. Some of the metallic parts such as cadmium, lead, and mercury of electronic goods roots for severe mental and physical problems causing damages to kidneys, lungs, and livers of human beings.…”