Corporate Headquarters

RTP Company 580 East Front Street PO Box 5439 Winona, Minnesota 55987-0439 USA

Telephone Fax Internet

(507) 454-6900(507) 454-4629www.rtpcompany.com

Winona, MN • Crockett, TX • Dayton, NV • Dupo, IL • Fort Worth, TX • Gahanna, OH • Henderson, KY Indianapolis, IN • Orange, TX • Portage, WI • Richmond, VA • Sauk Rapids, MN • South Boston, VA • Waukesha, WI

Monterrey, Mexico • Beaune, France • Ladenburg, Germany • Wroclaw, Poland Singapore • Shenzhen, China • Suzhou, China

Greetings,

Thank you for your interest in RTP Company. We’d like to take this opportunity to tell you a little more about our organization:

Whether your application is simple or complex, we can help you find a thermoplastic material to fit your needs. Our engineers develop customized thermoplastic compounds in over 60 different resin systems for applications requiring color, conductive, elastomeric, flame retardant, high temperature, structural, and wear resistant properties.

Our conductive product line offers compounds for electrostatic discharge (ESD) protection, EMI shielding, or PermaStat® permanent anti-static protection. Available in particulate and all polymeric-based materials, these compounds can be colored, as well.

We provide you with honest recommendations. Private ownership allows us to be completely objective in our selection of resins and additives. Unlike larger companies, we are not obligated to use specific materials; rather, we’ll suggest the thermoplastic that will work best for your application, even if it is not one of our own.

We’re here to support you. With over 20 manufacturing plants located in the United States, Mexico, Europe, Singapore and China, our global team of sales representatives are available to serve you efficiently – no matter where you do business.

Looking for samples? Please contact us and tell us about your application! We typically offer five-to-ten day lead times for engineered samples, color matches, and production orders of standard materials.

For more information, please telephone (507) 454-6900, or visit our website at www.rtpcompany.com. We look forward to working with you!

Sincerely,

RTP Company

Wear and Friction Resistant Thermoplastics

Solutions to Wear and Friction IssuesUsing Thermoplastic Technologies

2

Wear and Friction Resistant TechnologiesRTP Company is a leading global provider of custom engineered thermoplastics. Our engineers are experts at solving design challenges with specialty thermoplastic technologies. Solving wear and friction issues with thermoplastic compounds is one of the hallmarks at RTP Company. Our Wear and Friction Resistant compounds provide solutions for a number of common issues, including:

1) External LubricationReplace oils and grease applied in messy secondary operations with internally lubricated plastics

5) Buzz-Squeak-Rattle (BSR)Eliminate noise caused by part movement and vibration with economical compound technology

2) AbrasionManage catastrophic third-party abraders with our proprietary ABR technology for injection molding and extrusion

6) Scratch and MarEnhance product quality and increase end-use customer satisfaction using Surface Protection (SPR) compounds

3) StictionReduce stick-slip phenomenon by selecting materials based on Glide FactorSM data

4) Extreme ConditionsWithstand high temperatures, pressure, velocity, chemicals, and demanding tolerances

RTP Company provides Wear and Friction Resistant solutions for optimal performance of mating and moving parts that might otherwise experience issues such as messy secondary operations, stiction, noise, scratching, marring, abrasion, and/or degradation due to extreme conditions.

3www.rtpcompany.com

Below are some common external lubricants, but they come with a wide range of associated issues:

• Silicone (oil, grease)• PFPE (oil)• PTFE (grease)• Lithium grease• Solid lubricantsA better solution is to use internally lubricated thermoplastic compounds to create mating parts.

Issue #1: External LubricationExternal lubrication is used to enhance the longevity of a product’s use, but it is problematic and costly. Often, it requires a secondary brush, spray, or dip operation to apply the lubricant. The process is complicated by poor control over the amount applied, OSHA hazards, and contamination, as well as the need for additional SKUs and suppliers. When external lubricant is applied to a part, it can cause any number of problems, including:

• Inconsistent dispensing• Contamination of other parts and assemblies in the area• OSHA hazards (for example, causing employees to slip and fall)• Additional costs, such as material waste and disposal issues• Additional labor or robotics required for application of lubricant

Solutions...What if you could eliminate the need for external lubrication by designing your parts with material that is lubricated from the inside?RTP Company offers a number of internally lubricated compounds that provide lubricated part-on-part functionality without the need for costly and problematic external lubrication operations. Our broad portfolio includes these and other internally lubricated solutions:

• All-Polymeric Wear Additive (APWA)• Perfluoropolyether oil (PFPE)• Polytetrafluoroethylene (PTFE)• Silicone (Si)• Molybdenum disulfide (Moly)• GraphiteThese compounds are formulated to provide optimal performance of mating and moving parts, without the issues of external lubrication.

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Figure 1 Figure 2

Issue #2: AbrasionSubstances that cause abrasion are not easily predicted or managed. In fact, third party abraders can:

• Generate debris• Cause system contamination • Create adverse effects on operations and qualityTypically, abrasion is catastrophic to a system, so minimizing the effects of abrasion is crucial.

Solutions...How can you protect your product from issues with third party abraders?Many manufacturers turn to UHMWPE (Ultra-High Molecular Weight Polyethylene); however, this material is only available in machined stock shapes, leaving very little design flexibility. At RTP Company, we formulate unique Abrasion Resistant Alloys that minimize abrasion as well as UHMWPE can, but are designed specifically for injection molding, offering a whole new way to solve abrasion issues!

Abrasion Resistant Alloys are available in multiple resin and additive combinations for extreme design flexibility, including complex shapes and detailed parts. Additional functionality such as wear and friction resistance, flame retardant properties, and conductivity can also be included, making these materials invaluable for solving a wide range of issues… all in one thermoplastic compound!

How is abrasion tested at RTP Company? We test our Abrasion Resistant Alloys using two methods: ASTM G65 Dry Sand Testing, and ASTM G105 Sand Slurry Testing. In both cases, specimens are tested against a 60 Shore-D neoprene rubber wheel for 1,000 cycles. The specimen is then exposed to dry sand or sand slurry (depending on the test), and average Mass Loss is measured. Figures 1 and 2 show the results of these test methods.

ASTM G65 (Dry Sand)Abrasion Results

Modified ASTM G105(Sand Slurry) AbrasionResults

2.0000

1.8000

1.6000

1.4000

1.2000

1.0000

0.8000

0.6000

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0.0000Mas

s Lo

ss (g

)

UH

MW

PE

RTP

200

ABR

RTP

700

ABR

RTP

700

ABR

GB

10

RRTP

700

ABR

TFE

10

RTP

205

ABR

RTP

2305

A

Melt Processable

Not Melt Processable

ASTM G65 (Dry Sand) Abrasion Results

Lower Values = Better Abrasion Resistance

0.50

0.45

0.40

0.35

0.30

0.25

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0.15

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0.05

0.00Mas

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ss (g

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t UH

MW

PE

RTP

200

ABR

RTP

200

MS

2

RTP

1200

S-9

0A

RTP

700

ABR

GB

10

RTP

2299

X 1

3290

7

RTP

700

ABR

TFE

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RTP

700

RTP

2205

HF

RTP

2305

A

RTP

1399

X 1

3290

6

Rulo

n LR

Melt Processable

Not Melt Processable

Modified ASTM G105 (Sand Slurry) Abrasion Results

Lower Values = Better Abrasion Resistance

Test Specimen

Load

Rubber WheelSand

Test Specimen

Weight

Rubber Rimmed Wheel

Sand Slurry

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Figure 3

How is Glide FactorSM determined? Glide FactorSM is determined by measuring the difference between the static and dynamic coefficient of friction between two plastic mating pairs. RTP Company has pioneered this research, using a modified thrust washer test to determine Glide FactorSM in a wide variety of plastic material pairings, as shown in Figure 3. This tribology data is extremely helpful for material selection when stiction is a concern.

Solutions...RTP Company has developed a unique testing method to determine what is known as Glide FactorSM, the threshold at which plastic material pairings will work together with the least amount of friction. When two plastic mating surfaces have a low static coefficient of friction and a low Glide FactorSM, stiction can be significantly reduced, resulting in better product performance.

Issue #3: StictionStiction (or “stick-slip phenomenon”) is a term to describe a part that requires a high break-away force to START moving, then repeatedly slips and STOPS moving. Think of a syringe that starts and stops frequently, despite using the same amount of pressure on the plunger. Stiction can be worsened by:

• Long periods of inactivity • Shipping • Cold storage conditionsWhen stiction occurs, it results in poor performance and impaired functionality. This is problematic for healthcare applications like single-use drug delivery devices, or even industrial applications that require consistent energy draw.

PC against POM Test Results

Low FrictionThreshold≤ 0.150

Glide FactorThreshold≤ 0.0150

Settings: 50 psi

No Lubricant

POM Silicone vs PC Silicone0.0620.0540.008

Neat POM vs Silicone0.0770.0640.013

POM Silicone vs Neat PC0.0840.0710.013

Neat PC vs Neat POM0.1140.0780.036

Initial Static µInitial Dynamic µ

∆

Lubricant: One Side

Lubricant: Both Sides

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0

0.05

0.04

0.03

0.02

0.01

0

PC against POM Test Results

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Issue #4: Extreme ConditionsIn some cases, plastic parts are required to perform under a combination of extreme conditions, such as:

• High Pressures and Velocities (PVs)• Lubricated or dry conditions• High temperatures• Harsh chemicals• Long term creep and fatigue• Demanding dimensional tolerancesIf the correct part material is not selected, part failure can occur, resulting in costly repairs and downtime.

Solutions...Fortunately, we offer extreme solutions to minimize the effects of extreme conditions! Our Ultra Wear and Friction Resistant Compounds are based on resins with inherent heat and chemical resistant properties, which are then formulated with additives and fillers to create compounds to solve multiple issues using one material.

Figures 4 and 5 compare the wear factor of RTP Company compounds and industry standard products.

Some resins are inherently resistant to heat and chemicals, including:• PEEK • PPS • PPAHowever, neat resin is not always enough to withstand extreme conditions: when compounded with specific additives and fillers, the resulting material can solve multiple issues.

Figure 4

Figure 5

50,000 PV: 500psi @ 100 ft/min

50,000 PV: 250psi @ 200 ft/minNot Melt Processable

Wea

r Fac

tor

(in3 -m

in/ft

-lb-h

r)*E-

10

50,000 PV: 250 psi @ 200 ft/min

Extensive Post Curing Process

Melt Processable Thermoplastic

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8 9

2737 38 42 45

94 96

PTFE

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amic

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GRP

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FE

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CF/

Prop

rierta

ry W

ear

Not Melt Processable

Wea

r Fac

tor

(in3 -m

in/ft

-lb-h

r)*E-

10

50,000 PV: 250 psi @ 200 ft/min

Extensive Post Curing Process

Melt Processable Thermoplastic

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80

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1824

2943

58

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PTFE

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I 1

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I 2

PPS-

CF/

Prop

rieta

ry W

ear

PEEK

-CF/

GRP

H/T

FE

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Issue #5: Noise(Buzz, Squeak, and Rattle)In environments that are intended to be quiet like an automobile or office, there is nothing more annoying than the sound of a buzz, squeak, or rattle. Noise can be an unintended and undesired result of tightly clustered plastic components combined with movement and vibration.Noise can be caused by:

• Unintended plastic vs. plastic contact• Unintended plastic vs. metal contact• Increased vibration• More demanding dimensional tolerances• Excessive movement, rubbing, or sliding

Solutions...Our engineers have developed a selection of Noise Reducing Compounds, specially formulated to minimize noise issues. Drawing on our years of thermoplastic experience, we can assist you in material selection for optimal performance and minimal noise.

Issue #6: Scratch and Mar Consumer expectations are high, and scratching and marring on the surface of a plastic product can unintentionally damage its perceived high value. Scratch and mar can happen before or during shipping, or they can be caused by:

• Impact • Rubbing • Scraping • Abrasion • Erosion on parts that have a high level of contact

Solutions...Our Surface Protection Compounds have a lower coefficient of friction, which allows us to optimize surface protection. The advantages of these unique compounds include:

• Improved wear, scratch and mar resistance• Improved surface feel• Consistent slip/not affected by temperature change• Does not interfere with printable and paintable applications• Easy ejection for glossy or difficult-to-eject parts during injection molding cycle• Reduced surface roughness or die lines in extruded or blow molded surfaces

Additional Wear and Fricton Resistant SolutionsAt RTP Company, we are singularly focused on finding the precise solution to fit the needs of your thermoplastic part or component. Our compounds are formulated to balance the correct base polymer selection with the appropriate Wear and Friction Resistant technology to meet your end-use requirements. In addition, structural reinforcement, static protection, flame retardance, and color properties can be combined into a single material. For more information, contact your local RTP Company representative, or visit www.rtpcompany.com/products/wear-resistant.

RTP ComPany is committed to providing you with solutions, customization, and service for all of your thermoplastic needs. We offer a wide range of technologies available in pellet, sheet, and film that are designed to meet even your most challenging application requirements.

Please contact your local RTP Company Sales Engineer by calling 1-507-454-6900 1-800-433-4787 (U.S. only), E-mail rtp@rtpcompany.com or visit www.rtpcompany.com

ColoRColor inspires, energizes, and builds brand recognition, and choosing the right supplier is as important as selecting the right color. We offer color technology options in standard precolored resins or custom compounds, UniColor® Masterbatches, or cube blends.

CondUCTIveWe offer compounds for electrostatic discharge (ESD) protection, EMI shielding, or PermaStat® permanent anti-static protection. Available in particulate and all polymeric-based materials, these compounds can be colored, as well.

Flame ReTaRdanTWhether you are developing a new product or need to reformulate due to ever-changing regulations, we can custom engineer a flame retardant material with the exact properties you require.

STRUCTURalOur reinforced structural compounds can increase strength, stiffness, and provide resistance to impact, creep and fatigue. Ideal for metal or other material replacement, our formulas can be customized to meet cost and performance targets.

TPeOur thermoplastic elastomers provide rubber-like performance with the processing benefits of thermoplastic resin. We offer a wide range of options, from standard, in-stock resins to custom compounds designed to meet your specifications.

WeaR ReSISTanTOur wear resistant thermoplastic compounds can incorporate internal lubricants to reduce wear and friction, thereby lengthening the service life of your application and reducing your processing costs.

No information supplied by RTP Company constitutes a warranty regarding product performance or use. Any information regarding performance or use is only offered as suggestion for investigation for use, based upon RTP Company or other customer experience.

RTP Company makes no warranties, expressed or implied, concerning the suitability or fitness of any of its products for any particular purpose. It is the responsibility of the customer to determine that the product is safe, lawful and technically suitable for the intended use. The disclosure of information herein is not a license to operate under, or a recommendation to infringe any patents.

Copyright 2018 RTP Company, 4/18

RTP Company Corporate Headquarters • 580 East Front Street • Winona, Minnesota 55987 USA website: www.rtpcompany.com • email: rtp@rtpcompany.com

TELEPHONE: U.S.A. +1 507-454-6900

SOUTH AMERICA +55 11 4193-8772

MEXICO +52 81 8134-0403

EUROPE +33 380-253-000

SINGAPORE +65 6863-6580

CHINA +86 512-6283-8383

WIMAN CORPORATION +1 320-259-2554

ESP +1 800-432-2386

TM