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Polymer T echnology Nano Reinforced Compounds: Defined Addition of - - PowerPoint PPT Presentation
Polymer T echnology Nano Reinforced Compounds: Defined Addition of - - PowerPoint PPT Presentation
Nano Particle Reinforced Polymer T echnology Nano Reinforced Compounds: Defined Addition of nano particle to polymer matrix Nano particle: one dimension <nanometer High Aspect (length/thickness) Ratio Confidential Aspect Ratio Length :
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Aspect Ratio
Length : Thickness ratio Effectiveness of reinforcement in polymer matrix How much stress transferred to fibers or platelets aspect ratio reinforcement = increase in strength Nano Clay
< 1nm thick Aspect Ratio: 300:1 – 1500:1
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Why Nano Compounds?
Low Filler Loadings Required Improves rigidity (‘catheter pushability’) Preserves elongation of polymer Preserves surface finish Light weight blend Unique particle/shape Improves barrier properties Non-organic = improves thermo-mechanicals Char forming = flame retardance Nucleating = improves processing time
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Nano Clay
Clay Platelets Held by Electrostatic Forces Negative Surface Charge Nano Clay is Difficult to Mix in Polymers
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T win Screw Compounding
Dry form: nano clay clusters or aggregates Exfoliation exposes surface area of particles Twin screw compounding: homogenous distribution
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Improved Rigidity/T
- rque
100,000 200,000 300,000 400,000 2 4 6 8 10 12 14 Flexural Modulus (psi) % Nano Particle Reinforcement Rilsan AESNO Pebax 7233
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100 200 300 400 2 4 6 8 10 12 14 T ensile Elongation @ Break (%) % Nano Particle Reinforcement
Preserves Ductility
Pebax 7233 Rilsan AESNO
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Nylon 12 (Aesno) Dispersion
Natural Nanoclay
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