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Efforts to Replace Halogenated Polymers Are Speeding Up

Efforts to Replace Halogenated Polymers Are Speeding Up

Ticona Engineering Polymers is introducing a new Vectra G Series that features two new cost-competitive halogen-free liquid crystal polymer (LCP) grades.

According to Ticona, the series offers processing characteristics that avoid issues commonly encountered by electrical and electronic manufacturers that use flame-retardant, high-temperature nylons.

"Vectra G141 and G441 are glass- and mineral-filled LCPs designed to help EE customers meet demanding lead-free soldering and halogen-free requirements, and steer clear of costly corrosion and maintenance issues," says Ed Hallahan, a Ticona marketing manager.

The 35 -percent glass-filled Vectra G141 and 35-percent mineral- and glass-filled Vectra G441 from Ticona are:

  • Halogen-free,
  • Inherently flame resistant without additives,
  • V-0 to 0.15 mm (UL listing expected May 2010),
  • Potential drop-in solutions for small FR, HT nylon parts.

Both grades target the electrical and electronic markets, which typically require excellent dimensional stability in thin-wall parts, even at higher temperatures - more than 260C-where existing flame-retardant (FR) polymers struggle. They are designed to outperform traditional FR, high-temperature (HT) polyamides (nylons) and thermoplastic polyesters (PBT) that require lead-free soldering resistance.

"Customer comparison tests demonstrate the Vectra G grades can outperform nylon and PBT in processability, blister performance and dimensional stability," says Hallahan.

The Vectra LCP line was introduced 23 years ago.

Major engineering efforts are also under way to replace halogenated wire coating used in cars and various types of equipment.

A flexible polyphenylene oxide/polystyrene polymer called Noryl is steadily making progress as a PVC replacement in wiring in major applications such as cars, medical diagnostic equipment and telecommunications gear.
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