Wire and cable compounds | applications feature Huber recently introduced Kemgard 700Z, a zinc
molybdate/zinc borate complex. Kemgard 700Z is a smoke suppressant designed to be used in both fl exible PVC and halogen-free compounds. The product has a median particle size of 2.5 microns. Huber also offers aluminium hydroxide (ATH) and magnesium hydroxide fl ame retardant products. Addivant last year introduced Polybond 3249 and
Polybond 3349 coupling agents, which it says allow wire and cable compounders using halogen-free fl ame retardants (HFFR), to optimize physical polymer properties. “When used in conjunction with Mg(OH)2
or
ATH, Polybond 3249 and Polybond 3349 allow wire and cable compounders to focus on physical property optimization while achieving excellent fl ame retardant dispersion and melt fl ow stability,” the company claims. The additives are optimized to offer superior physical property retention and melt fl ow stability. Applications include building wire, communications cable and automotive wire and cable applications. Developments around ATH supply indicate some- thing of a realignment. Earlier this year, major fl ame retardant producer Albemarle said it was streamlining
its “Martinal” portfolio of fi ne precipitated ATH products, which are mainly used in wire & cable applications, and “refocusing its efforts and resources on further development and growth of key product grades.” It said the changes “support the evolution of the global mineral fl ame retardant market and allow the company to place greater emphasis on innovation for technolo- gies designed to meet the future needs of customers.” The company will continue to offer several key Martinal grades (ON 313 S, ON 320, ON 904, ON 906 , ON 908, ON 921, and ON 935) and will also increase produc- tion capacity for the fi ne precipitated hydrate ATH product line at its Bergheim facility in Germany, with completion expected by the end of 2015. It has discontinued production of four other Martinal grades (ON, ON 310, ON 313 and ON 4608), but will continue to sell them until the
Compounders
have a range of new fi re retardant
options for wire and cable
applications
> extruders > feeders > components > pneumatic conveying > complete systems >> STS Mc11 specific torque of 11,3 Nm/cm3, the new STS Mc11 STS Mc11 BENEFITS
> First STS extruder being part of Coperion’s time-proven ZSK MEGAcompounder method patent
> Exclusively equipped with European, Coperion-branded gearboxes > Increased screw speed from 800 to 900 rpm > Several new features to ensure easy cleaning and quick recipe changes > STS Mc11
is the result of the great quality initiative of Coperion Nanjing, China
– the next generation of Coperion’s STS twin screw extruders. With its provides increased throughput by
up to 27% at improved compound quality. >>
www.coperion.com/stsmc11 NEW
CHINAPLAS 2015
Hall 5.1, Booth 5.1K11 Guangzhou, P.R. China May 20 - 23, 2015
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