Energy & Advanced Materials Division
3M Specialty Additives
3MTM DynamarTM RA 5300 High Performance Rubber Additive
Optimizing
Performance
& Improving
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Productivity
Energy & Advanced Materials Division
Agenda
• Market Status
• Introducing 3M™ Dynamar™ RA 5300
High Performance Rubber Additive
• Test methods and results
• Summary and Conclusions
• Questions
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Energy & Advanced Materials Division
Market Status
• Fluorine – Carbon Bond
– Chemical and Heat Resistance
• Chemical resistance impacts compounding and affects
processing
– Polymer rich compounds
– Dry, rough extrusion
• Additives are used to improve processing
– Waxes, oils
• What properties are sacrificed? Is there an
alternative?
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Energy & Advanced Materials Division
Introducing 3MTM DynamarTM RA 5300
High Performance Rubber Additive
• Unique 3M chemistry
• Based on experimental results described in this
presentation, RA 5300 offers both processing and
performance improvements
• Improvements were seen in extrusion and injection
molding with minimal affect on performance properties
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Energy & Advanced Materials Division
Introducing 3MTM DynamarTM RA 5300
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Energy & Advanced Materials Division
Equipment / Experiment Set-up
• Common medium viscosity o-ring grade copolymer used
• Industry standard compound; 100 parts per hundred rubber (PHR)
of the elastomer base, 30 PHR of N-990 carbon black, 6 PHR of
calcium hydroxide, and 3 PHR of magnesium oxide
• Four compounds compared
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–
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–
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Control
Carnauba Wax,
Struktol® WS-280,
New 3M™ Dynamar™ RA 5300
Energy & Advanced Materials Division
Compounds
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Energy & Advanced Materials Division
Tests performed
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Moving Die Rheometer
Viscosity
Physical Properties
Heat Resistance
Compression Set
Capillary Rheometer
Garvey Die Extrusion
Mini-Injection Press
Loading Evaluation
TGA
Energy & Advanced Materials Division
Experiments and Results
MDR Cure and Scorch Comparison Results
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Energy & Advanced Materials Division
Experiments and Results
MH and Mooney Viscosity Results
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Energy & Advanced Materials Division
Experiments and Results
Physical Property Comparison
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Energy & Advanced Materials Division
Experiments and Results
Compression Set Comparison
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Energy & Advanced Materials Division
Experiments and Results
Heat Aging Property Loss Comparison
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Energy & Advanced Materials Division
Experiments and Results
Shear Stress Comparison at 100°C
• RA 5300 was comparable to the Carnauba Wax
• At rates of approximately 1000/s, all of the compounds have similar flow
properties
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Energy & Advanced Materials Division
Experiments and Results
Shear Stress Comparison at 150°C
• At shear rates below 500/s RA 5300 exhibits better flow
• At and above 500/s, the Carnauba Wax containing compound results in a
considerably lower stress
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Energy & Advanced Materials Division
Experiments and Results
Garvey Die Extrusion Comparison
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Energy & Advanced Materials Division
Experiments and Results
Mold Release Comparison
• Samples molded in the half round spiral tool all released from the groove easily
and allowed for relatively simple part removal
• All of the samples, except those produced using the RA 5300, stuck in the grooves
of the deeper, more submerged sample, pulling the part away from the nozzle tip
and having to be pried out of the mold with a wooden tool
• Parts molded using the RA 5300 released totally from the groove
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Control
RA 5300
Energy & Advanced Materials Division
Experiments and Results
The Effect of RA 5300 Loading on Properties
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Energy & Advanced Materials Division
Experiments and Results
Thermal Stability
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Energy & Advanced Materials Division
Summary
• Based on these results, 3M™ Dynamar™ RA 5300 could offer
both processing and performance improvements in comparison to
other FKM processing aids
• Sharper edges and smoother surfaces were achieved in Garvey
Die extrusions
• Improved mold release and fouling in injection molding
• Incremental processing improvements can be achieved with
increased loadings of the RA 5300, with 0.5 and 1.0 PHR being
the optimal loading range
• Minimal affect on rheological and performance properties
• Thermally stable up to 280°C
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Energy & Advanced Materials Division
For more information
www.3M.com/RA5300
jdenham@mmm.com
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Energy & Advanced Materials Division
Thank you
Questions
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Energy & Advanced Materials Division
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