M. Geck, P. Raj Saxena

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SPE 2007BOOSTING PROPERTIES AND PERFORMANCE OF
POLYOLEFIN COMPOUNDS WITH SILICONE PELLETS

• M. Geck, P. Raj Saxena

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WACKER Chemie AG
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SILICONES CAN BE MORE THAN PROCESSING AIDS
A novel silicone additive concept to provide a
well balanced property portfolio to thermoplastic
compounds

• Improved processing and flow
• Elimination of melt fracture and die build-up
• Better mold filling and mold release
• Improved surface lubricity and slip
• Better abrasion resistance and lower CoF
• Improvement of elongation and impact strength
• No negative impact on modulus, hardness, softening

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SILICONES ARE UNIQUE

• High thermal stability
• Very low glass transition temperature (Tg 124
  C), therefore high flexibility at low
  temperatures
• Chemically inert and of low reactivity
• Low surface tension (20 mN/m), therefore high
  surface and interface activity

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THE NEW SILICONE ADDITIVE CONCEPT FOR
THERMOPLASTIC COMPOUNDING

• GENIOPLAST Pellets
• translucent cylindrical pellets 4mm dia.
• unique formulation ultra high molecular weight
  silicone and high surface area pyrogenic silica
• highly effective silicone additive
• all-round compatibility with resins
• easy to dose
• no migration
• excellent mechanics
• flame retardant synergist

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THE NEW SILICONE ADDITIVE CONCEPT FOR
THERMOPLASTIC COMPOUNDING

• GENIOPLAST Pellet S
• is recommended for technical applications
• GENIOPLAST Pellet P
• is the corresponding food compliant grade

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GENIOPLAST PELLETS IMPROVE PROCESSING

• Reduction of torque for polyolefins with and
  without mineral filler

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GENIOPLAST PELLETS IMPROVE FLOW PROPERTIES

• Reduction of melt viscosity of polyolefin
  compounds containing mineral filler

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GENIOPLAST PELLETS IMPROVE MECHANICAL PROPERTIES

• Improvement of Charpy notched impact strength of
  polyolefin compounds containing mineral filler

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GENIOPLAST PELLETS IMPROVE MECHANICAL PROPERTIES

• Improvement of elongation at break of polyolefin
  compounds containing mineral filler

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GENIOPLAST PELLETS IMPROVE SURFACE PROPERTIES

• Improvement of abrasion of polyolefin compounds
  containing mineral filler

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GENIOPLAST PELLETS IMPROVE FLAME RETARDANT
PROPERTIES

• GENIOPLAST Pellets can work as flame retardant
  synergist in polyolefin compounds containing
  flame retardant fillers

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GENIOPLAST PELLETS ARE MORE THAN PROCESSING AIDS

• Well balanced properties can be achieved,
  particularly for mineral filled polyolefin
  compounds
• Specific System Examples
• - Polyolefin compounds containing flame retardant
  filler e.g. for cable or extruded sheet
  application
• - Polyolefin compounds containing mineral filler
  (calcium carbonate, talc) e.g. for applications
  in automotive, white goods, appliances, or pipes

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BENEFITS THAT GENIOPLAST PELLETS CAN BRING TO A
HFFR CABLE COMPOUND
LDPE/ATH (60) Model System
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BENEFITS THAT GENIOPLAST PELLETS CAN BRING TO AN
AUTOMOTIVE COMPOUND
TPO (PP/EPDM) 20 Talc Model System
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BENEFITS THAT GENIOPLAST PELLETS CAN BRING TO A
COMPOUND FOR WHITE GOODS / APPLIANCES
PP/Talc (40) Model System
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BENEFITS THAT GENIOPLAST PELLETS CAN BRING TO A
PIPE COMPOUND
HDPE/CaCO3 (40) Model System
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CONCLUSION
GENIOPLAST Pellets can improve

• processing (reduce torque)
• flow (reduce melt viscosity)
• surface properties (improve abrasion, reduce
  CoF)
• mechanical properties (elongation, impact)
• in polyolefin compounds containing mineral filler

• without any negative impact on modulus,
  hardness, and softening temperature

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CONCLUSION
In addition, GENIOPLAST Pellets

• can work as flame retardant synergist
• improve flame retardant properties

in polyolefin compounds containing flame
retardant filler
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WACKER BURGHAUSEN, GERMANY
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ACKNOWLEDGEMENTS
Dr. Michael Geck Oliver Fuhrmann Dr. Mike
Lucarelli
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Thank you very much for your interest and your
attention !
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UL94 and LOI in Brief (Source ides.com)

• UL 94 Procedure (ASTM D3801-06) A specimen is
  supported in a vertical position and a flame is
  applied to the bottom of the specimen. The flame
  is applied for ten seconds and then removed until
  flaming stops at which time the flame is
  reapplied for another ten seconds and then
  removed. Two sets of five specimens are tested.
  The two sets are conditioned under different
  conditions. V0Specimens must not burn with
  flaming combustion for more than 10 seconds after
  either test flame application. V1Specimens must
  not burn with flaming combustion for more than 30
  seconds after either test flame application. V2
  Specimens must not burn with flaming combustion
  for more than 30 seconds after either test flame
  application.
• LOI Procedure (ASTM D2863-06a) The minimum
  concentration of oxygen that will just support
  flaming combustion in a flowing mixture of oxygen
  and nitrogen. A specimen is positioned vertically
  in a transparent test column and a mixture of
  oxygen and nitrogen is forced upward through the
  column. The specimen is ignited at the top. The
  oxygen concentration is adjusted until the
  specimen just supports combustion. The
  concentration reported is the volume percent.