Us Use o of f Mayzos Beta a Nucl cleation ation Mas asterbatch - - PowerPoint PPT Presentation

Mayzo Makes It Possible

Imagine working with a company that has no boundaries on exploring solutions for

Mayzo Makes It Possible

geogri grids ds

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Us Use o

• f

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

Mayzo Makes It Possible

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Out utline line

• Introduction to Beta Nucleation
• Description of Mayzo Masterbatch
• Effect of Mayzo Masterbatch on Geogrid Properties and

processing

• Enhanced benefits of Mayzo 2nd generation Masterbatch

Mayzo Makes It Possible

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Intr troductio

• duction
• 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.

Mayzo Makes It Possible

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Differences ferences Be Betw tween een Alpha pha and nd Be Beta ta Crystal stal Phase ases s in PP

Alpha Phase

• Monoclinic crystal
• Melts at ~ 164 oC (HPP)
• Most common phase
• Many nucleants known

Beta Phase

• Hexagonal crystal
• Melts at ~ 150 oC (HPP)
• Transforms to alpha phase on

stretching

• Lower yield stress and

different drawing behavior

• Microvoids if stretched in

solid state

• Very few known nucleants

Mayzo Makes It Possible

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Ma Mayzo zo Ma Masterba terbatch tch Fo For Ge Geogr

• grid

id Prod

• ductio

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

Mayzo Makes It Possible

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Geo eogr grid id Prod

• duction

uction Proc

• cess

ess

Mayzo Makes It Possible

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Effect ect of

• f Ma

Mayzo zo Additive dditive on

• n Geo

eogr grid id Proc

• cessing

essing and d Produ

• duct

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

Mayzo Makes It Possible

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Out utPerforated erforated Shee eet t after ter MD MD Str tretching etching line ne

Without Beta With Beta

Mayzo Makes It Possible

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Clos

• se-up

up of

• f MD

MD Str tretched etched Shee eet

With Mayzo Beta Masterbatch No Beta Masterbatch

Mayzo Makes It Possible

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Geo eogr grid id Ma Made e Wi With th and nd Wi With thout

• ut Ma

Mayzo yzo Be Beta ta Ma Masterbatch terbatch

With Mayzo Beta Masterbatch No Beta Masterbatch

Mayzo Makes It Possible

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150 200 250 300 350

Standard BX BX-Modified Thinner BX-Modified

Basis weight (g/ sq. meter) Basis Weight Comparison of Biaxially Oriented Geogrids

Mayzo Makes It Possible

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2 4 6 8 10 12 14

Standard BX BX-Modified Thinner BX-Modified

2% Tensile Strength (kN/m)

Tensile Strength of Geogrids at 2% Elongation

MD TD MD TD MD TD

Mayzo Makes It Possible

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5 10 15 20 25

Standard BX BX-Modified Thinner BX-Modified

5% Tensile Strength (kN/m)

Tensile Strength of Geogrids at 5% Elongation

MD TD MD TD MD TD

Mayzo Makes It Possible

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1 2 3 4 5 6 7 8 9 10

Standard BX BX-Modified Thinner BX-Modified

Torsional Rigidity (cm-kg/deg)

Torsional Rigidity of Biaxial Geogrids

Mayzo Makes It Possible

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Advantages vantages of

• f Mayzo’s Bet

eta Nucleation eation Ma Masterbatch terbatch Fo For Geo eogr grid id Prod

• duction

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)