Imagine working with a company that has no geogri grids ds boundaries on exploring solutions for Mayzo Makes It Possible Mayzo Makes It Possible Us Use o of f Mayzo’s Beta a Nucl cleation ation Mas asterbatch rbatch in in the Pro roduction ction of f Polyp ypropy ropylene lene Ge Geogri rids ds 1
Out utline line Mayzo Makes It Possible • Introduction to Beta Nucleation • Description of Mayzo Masterbatch • Effect of Mayzo Masterbatch on Geogrid Properties and processing • Enhanced benefits of Mayzo 2 nd generation Masterbatch 2
Intr troductio oduction Mayzo Makes It Possible • Polypropylene is a semi-crystalline polymer that has three different crystal forms (α, β, and γ) • Nucleating agents (typically α -type) are added to PP to increase the rate of crystallization (faster cycle), improve stiffness & strength, and improve clarity. • There are very few effective beta nucleating agents, and almost no commercial PP resins that are β -nucleated • Beta nucleation can produce very unique PP products • We have developed a β -nucleated masterbatch that can be added to any non-nucleated PP resin to achieve the benefits of beta nucleation. 3
Mayzo Makes It Possible Differences ferences Be Betw tween een Alpha pha and nd Be Beta ta Crystal stal Phase ases s in PP Alpha Phase Beta Phase • Monoclinic crystal • Hexagonal crystal • Melts at ~ 164 o C (HPP) • Melts at ~ 150 o C (HPP) • Most common phase • Transforms to alpha phase on • Many nucleants known stretching • Lower yield stress and different drawing behavior • Microvoids if stretched in solid state • Very few known nucleants 4
Mayzo Makes It Possible Ma Mayzo zo Ma Masterba terbatch tch Fo For Ge Geogr ogrid id Prod oductio uction n - BNX NX BETAP APP-B B (1st st genera erati tion) n) • A Unique Pellet Concentrate that Modifies the Crystallization Behavior of Polypropylene • It alters the drawing behavior of the geogrid so that the un-oriented “node” regions are thinner, and more of the PP is present in the “high strength” oriented strands • The strength and rigidity of the final geogrid is increased allowing a reduction in the basis weight and cost of the geogrid • The perforated sheet can be stretched at higher rates to increase throughput and further reduce costs • Mayzo has applied for US and Foreign patents on this technology 5
Mayzo Makes It Possible Geo eogr grid id Prod oduction uction Proc ocess ess 6
Mayzo Makes It Possible Effect ect of of Ma Mayzo zo Additive dditive on on Geo eogr grid id Proc ocessing essing and d Produ oduct ct Appea pearance rance • More neck-in of grid after MDO step (5-10% width reduction) • Flatter nodes after TDO step • Wider node region after TDO step • Wider ribs after TDO step • Can be oriented at lower temperatures and at faster line speeds • Higher MDO break elongations in final geogrid 7
Mayzo Makes It Possible Out utPerforated erforated Shee eet t after ter MD MD Str tretching etching line ne Without Beta With Beta 8
Mayzo Makes It Possible Clos ose-up up of of MD MD Str tretched etched Shee eet With Mayzo Beta No Beta Masterbatch Masterbatch 9
Mayzo Makes It Possible Geo eogr grid id Ma Made e Wi With th and nd Wi With thout out Ma Mayzo yzo Be Beta ta Ma Masterbatch terbatch With Mayzo Beta No Beta Masterbatch Masterbatch 10
Mayzo Makes It Possible Basis Weight Comparison of Biaxially Oriented Geogrids 350 Basis weight (g/ sq. meter) 300 250 200 150 Standard BX BX-Modified Thinner BX-Modified 11
Mayzo Makes It Possible Tensile Strength of Geogrids at 2% Elongation 14 TD TD 12 2% Tensile Strength (kN/m) 10 TD MD MD 8 MD 6 4 2 0 Standard BX BX-Modified Thinner BX-Modified 12
Mayzo Makes It Possible Tensile Strength of Geogrids at 5% Elongation 25 TD TD TD 5% Tensile Strength (kN/m) 20 15 MD MD MD 10 5 0 Standard BX BX-Modified Thinner BX-Modified 13
Mayzo Makes It Possible Torsional Rigidity of Biaxial Geogrids 10 9 Torsional Rigidity (cm-kg/deg) 8 7 6 5 4 3 2 1 0 Standard BX BX-Modified Thinner BX-Modified 14
Mayzo Makes It Possible Advantages vantages of of Mayzo’s Bet eta Nucleation eation Ma Masterbatch terbatch Fo For Geo eogr grid id Prod oduction uction • Improved Drawing Capability (smaller node regions & wider, thicker strands) • Higher Tensile strength • Higher Torsional Rigidity • Significant Product down-weighting (up to 20% down- weighting demonstrated) • Higher line speeds (up to 50% increase demonstrated) 15
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