Thermopla lastic T Technolo logie ies f for Firearms and Firearm - - PowerPoint PPT Presentation

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Thermopla lastic T Technolo logie ies f for Firearms and Firearm - - PowerPoint PPT Presentation

Jan 18, 2024 217 likes •759 views

THERM0PLASTIC ELASTOMERS STRUCTURAL WEAR CONDUCTIVE COLOR FLAME RETARDANT Thermopla lastic T Technolo logie ies f for Firearms and Firearm Accessories Zach Halverson Product Development Engineer - Structural RTP Company

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THERM0PLASTIC ELASTOMERS • STRUCTURAL • WEAR CONDUCTIVE • COLOR • FLAME RETARDANT

Thermopla lastic T Technolo logie ies f for Firearms and Firearm Accessories

Zach Halverson Product Development Engineer - Structural RTP Company

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Agenda

  • RTP Company

– Who we are and what we do – Why use thermoplastics in firearms

  • Firearm Related Technologies

– Reinforcements

  • Low aspect, short glass, VLF (long fiber), carbon fiber

– Color – Challenging application solutions – Lightweighting and Ergonomics

  • Review/Questions
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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Profile ile

  • RTP Company is an independent, privately

. owned compounder

  • Global manufacturing and engineering support
  • Worldwide sales representation/distribution
  • Established in 1982
  • 1300+ employees
  • $450+ million annual sales
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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Independent Specialty Compounder

  • Compounder  We blend thermoplastic

resins with fillers, additives, and modifiers

  • Specialty  We create engineered

formulations tailored to your precise needs

  • Independent  We are unbiased in our

selection of raw materials

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Worldwide Support

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS OF CUSTOM ENGINEERED THERMOPLASTICS

Global Manufacturing Sites

Your GLOBAL Compounder

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Product Families

COMPREHENSIVE PRODUCT LINE

Compounds formulated to meet your needs

STRUCTURAL WEAR RESISTANT THERMOPLASTIC ELASTOMERS FLAME RETARDANT COLOR FILM AND SHEET CONDUCTIVE

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Why Thermoplastics?

  • Weight Reduction
  • Design Freedom
  • Custom Colored
  • High Temperature
  • Thermal Insulation
  • Impact Resistance
  • Strong and Durable
  • Corrosion Resistance
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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

F&TA Technical Brief

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

F&TA Technical Brief

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Technologies for Firearms

  • Fillers and Reinforcements

– Influence of aspect ratio on mechanical properties – Beads, minerals, short glass, long glass, carbon fiber

  • Color

– Critical matches and functional additives

  • Application Specific

– Impact, high temperature, UP, stabilization

  • Density Modification

– High gravity, lightweighting

  • Ergonomics

– Bondable Thermoplastic Elastomers (TPE’s)

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Fillers-Aspect R t Rati tio

Property change determined by:

Aspect Ratio Reinforcing

Aspect Ratio = 1 Minerals (Talc) Aspect Ratio = 2-50 Fibers (Glass) Long Glass Fiber Aspect Ratio = 300+ Aspect Ratio = 50-250

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Low Low Aspe pect R Ratio

  • Reusable Plastic Handling Container

– Tight Tolerance – Durable – Chemical Resistance – Stiffness – Cheap

  • Solution

– Mineral Filled Polypropylene

  • How Solution Satisfies Problem?

– Materials molds to very tight tolerances and maintains good dimensional stability while keeping very low costs.

  • Firearm Crossover Example

– Gun Cases

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Shrink Rate x = Shrink Rate y Flat Part

Dim imensio ional S l Stabilit ility

Mineral/Beads

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Stocks, G Grips

  • Rifle & Shotgun Stocks & Pistol Grips

– Light Weight – Durable – Chemical Resistance – Good Surface Appearance

  • Solution

– Nylon 6/6 + Short Glass Fiber

  • How Solution Satisfies Problem?

– Materials demonstrate great durability while maintaining a low specific

  • gravity. Un-deteriorated from typical chemicals such as gun cleaner, deet,

& gas and oil…

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Non

  • n-Uniform Shrink = Warp

Shrinkage X1 & X2 ≠ X3 ≠ Y1 Warp Glass Fibers

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Oil Pan C Case Study

  • Oil Pan

– Chemical Resistance – Excellent Strength, Stiffness, & Impact – Good Heat Resistance – Moderate Cost – Extremely Tight Dimensions & Flat

  • Solution

– ????

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Strength & Warp Control

Common Loading = 15% Glass Fiber & 25% Mineral or Beads

Glass Fiber + Mineral Combo

Shrink Rate x = Shrink Rate y Flat Part

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Case Study

  • Oil Pan

– Chemical Resistance – Excellent Strength, Stiffness, & Impact – Good Heat Resistance – Moderate Cost – Extremely Tight Dimensions & Flat

  • Solution

– Nylon 6/6 + 15% Glass fiber + 25% Mineral

  • How Solution Satisfies Problem?

– Nylon 6/6 brings good heat and chemical resistance while the glass fibers provide necessary reinforcement and mineral aids in maintaining geometric constraints

Firearms Crossover Example:

Firearm hardware with warping problems

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Magaz azines es

  • Requirements

– High Impact (even at low temps) – Chemical Resistance – Lightweight – Wear Resistant – Stiff

  • Solution

– VLF (very long fiber) Nylon or RTPU

  • How Solution Satisfies Problem?

– Materials demonstrate great durability and impact strength to protect the magazine from drops even at low temps. Good wear resistance to keep the magazine functioning at optimal performance; no shells sticking in the magazine. – Colorable and won’t dent like metal!

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Extreme Aspect Ratio

Fiber Length ~ 1-2 mm 12 mm

Short Fiber Long Fiber

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Sec ecret t to Success: T : The e Skel eleton

PA 66 + 60% VLF Seat Belt Tensioner Housing

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Drop I Impact Te Test

Increasing impact load

Short Fiber Nylon VLF Nylon

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

RTP TP VLF Product Offering

RTP Series Resin

100 Polypropylene 200 Nylons (Polyamides) 300 Polycarbonate 400 Polystyrene 600 ABS 700 HDPE 800 POM 1000 PBT 1300 PPS PPS 1400 PES 21 2100 PEI EI 2200 PEEK EEK 2300 RTPU 4000 PPA PA * RTP Ultra Performance Products

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Lightwei eight R Rei einforcement

  • Kayak Paddle

– Strength – Stiffness – Lightweight – Aesthetics

  • Solution

– Nylon + Carbon Fiber

  • How Solution Satisfies Problem?

– Carbon fiber provided excellent reinforcement and weight savings over glass fiber in a nylon compound while maintaining acceptable aesthetics to the customer while also increasing marketability.

Firearms Crossover Example:

Hig igh-end firearm components where increased performance and ligh ghtwei eight a are c e crucial.

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Carbon Fiber

Fiber E-Gla lass Fiber Standa dard d Modulu lus Carbo rbon F Fibe ber Typical Diameter, µm 10-17 5-10 Density, g/cm3 2.55 1.81

  • Est. Tensile Strength, MPa

3400 4100

  • Est. Tensile Modulus, GPa

73 240

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Fillers and Reinforcements

RTP 200 SERIES NYLON 6,6 COMPOUNDS RTP 200 RTP 227 RTP 207 VLF 80207 EM HS RTP 287 Filler / Reinforcement Unfilled 40% Talc Mineral 40% SGF Short Fiber 40% VLF Very Long Fiber 40% CF Carbon Fiber Mold Shrinkage, in/in 0.014 0.007 0.004 0.002 0.001 Specific Gravity 1.14 1.50 1.46 1.46 1.31 Tensile Strength, psi 11,000 11,000 32,000 33,000 40,000 Flexural Modulus, Mpsi 0.4 1.0 1.7 1.8 3.7 Notched Izod Impact, ft-lb/in 1.0 0.9 2.6 6.5 2.0 HDT @ 264 psi, °F 160 400 480 490 485

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Color

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Color with Function

  • Rifle Body

– Strength – Stiffness – Impact – Lightweight – Critical Color Match

  • Solution

– Nylon + VLF (long glass reinforcement) + Color Masterbatch (MB)

  • How Solution Satisfies Problem?

– VLF provides strength, stiffness, and good impacts in custom matched colors – even at very low temperatures!

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Col

  • lor
  • r

PRECOLOR • MASTERBATCHES • CUBE BLENDS

  • Precolors
  • Masterbatches
  • Cube blends
  • Functional Additives

Custom Color Matches LED Light Diffusion

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Not Just Color!

  • Laser Marking
  • Glow-in-the-dark
  • Spray Colors

– Camo colors (certain resins)

  • Edge Glow
  • Thermochromatic
  • Photochromatic
  • Light-diffusing
  • Antibacterial
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Application Specific Technologies

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  • Trail Camera

– Impact – Abrasion – Durability – Aesthetics

  • Solution

– Impact Modified Nylon

  • How Solution Satisfies Problem?

– Improved ductility in low-cost, lightweight material with good abrasion resistance and great aesthetics.

High I Imp mpact

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Modifiers

Impact Modifiers

Increased Impact Properties Decreased Strength and Stiffness

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High T Temper erat ature C e Capab abilities es

  • Automatic Rifle Hand Guard

– High Temperature Resistance – High Strength – Impact Resistance

  • Solution

– VLF (long glass reinforced) PPA

  • How Solution Satisfies Problem?

– PPA provides high temperature capabilities with VLF reinforcement providing excellent impact resistance, strength and stiffness.

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

High T Tem emp Mat Mater erials

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Ultra Performance Structural

Dictionary: "Ultra” - Very or extreme. (descriptive)

Short Glass Fiber Short Carbon Fiber Very Long Glass Fiber (VLF)

PEEK PPA PPS PEI

Ultra Performance Structural Compounds

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Ultra Performance (UP) PPA

Carbon Fiber Reinforced PPA Comparison RTP 4087

RTP 4087 UP

Competitor PPA 40% CF Tensile Strength, MPa (psi) 275 (39885)

360 (52215)

232 (33650) Tensile Modulus, MPa (psi*106) 32500 (4.7)

41500 (6.0)

35500 (5.1) Flexural Strength, MPa (psi) 415 (60190)

580 (84120)

425 (61640) Flexural Modulus, MPa (psi*106) 27500 (4.0)

34500 (5.0)

26600 (3.9) Notched Izod Impact, KJ/m2 7.0

9.0

7.0 Note: Properties tested using ISO test methods

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

UP PPA Con’t

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UV & Heat Stabilization

  • Heat stabilizers come in many forms

– Slow down the degradation reactions of the polymer caused by heat – Can be for process stability or Long Term Heat Aging (LTHA)

  • UV Stabilization

– HALS: Protects polymer by stopping degradation reactions once they have started – UV Absorbers: Protects polymer by absorbing harmful UV light before the degradation reaction has started

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Heat S Stabiliz ilizatio ion D Data

Temperature Tensile Retention Izod Impact Retention 140ºC +5.7% +9.9% 150ºC

  • 4.7%
  • 11.3%

40% VLF PP

1000 Hour Heat Aging

Typical Automotive requirements are ~+/- 25%

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Density Modification

  • High Gravity Materials

– Density of 2.0 to 11 g/cm3 – Metallic and non-metallic additive options

  • Lighweighting

– Down to .7 g/cm3 density – Reinforcements – Resin changes – Chemical foaming agents

–Gla lass B Bubbl bble

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Specif ific ic G Gravit ity R Range

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Hig igh G Gravit ity M Materia ials ls

  • Why add weight?

– Sound/vibration damping – Polymer based projectiles – Balancing – Perceived value – Productivity increase

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Ammunit itio ion A Applic licatio ions

Applic licatio ions

  • Projectiles

– Frangible – Jacketed or unjacketed

  • Casings
  • Dummy rounds

Ben enef efits

  • 100% lead free
  • Up to same density as lead
  • Customized grades to fit application
  • Colorable

Product Resin SG Type

RTP 299 A X 106739 Nylon 6 5.75 Jacketed/ Unjacketed RTP 299 A X 92682 J Nylon 6 11.0 Jacketed/ Unjacketed RTP 2099 X 106722 C Alloy 11.0 Jacketed

Projectile Materials

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Lig ightweig ightin ing

  • Glass Bubbles

– Reduce density in many resins – Some property loss – Good aesthetics possible

  • Chemical Foaming

– Up to 20% density reduction – Added as masterbatch – Poor aesthetics – Limited resin selection

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

Glass B Bubbles

Over 20% reduction possible depending on resin used.

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Elastomers

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Sof

  • ft T

Tou

  • uch
  • Axe Handle

– Strong – Durable – Soft grip – Colorable

  • Solution

– Black VLF Substrate + Colored Bondable TPE

  • How Solution Satisfies Problem?

– VLF brings required mechanical properties and durability while the

  • vermolded bondable TPE provides comfortable grip and shock absorption

in an aesthetically pleasing design.

Firearms Crossover Example:

Rifle butt pad or ergonomic pistol grip.

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Bondable TPE’s

Thermo moPlastic Elasto tome mer

“…Having the property of softening or fusing when heated and of hardening again when cooled…” “…Any of various elastic substances resembling rubber…”

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YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS

TPE Key Features

  • Bondable TPE’s

– Many substrates possible (high-temp problematic) – RTP 6091 TPV for nylon – top notch chemical resistance – Multi-shot molding for creativity and mfg. efficiency

  • Applications

– Overmolded stocks and forearms – Stand-alone grips – Energy absorption/damping

  • Customizable

– Hardness – Vibration and damping qualities – Density

Bondable TPE SERIES Shore A HARDNESS RANGE

RTP 2700 S 30 A - 90 A RTP 2740 S 30 A - 90 A RTP 6042 40 A - 70 A RTP 6003 45 A – 75 A RTP 6091 55 A - 85 A

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Rev eview

  • RTP – Global Specialty Independent Compounder
  • Technologies

– Reinforcement : Aspect Ratio Dependent

  • Glass Bead, Mineral, Chopped Glass, VLF, Carbon Fiber

– Color

  • In-house Expertise Color Development and Functional Additives

– Solutions tailored for application specific needs

  • Impact Modifiers
  • High Temperature
  • Ultra Performance
  • Density Modification

– Bondable TPE’s

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Thank You!!

  • Questions??

Contact Info:

Za Zach Ha Halverson

  • n

Product Development Engineer (507) 474-5393 zhalverson@rtpcompany.com www.rtpcompany.com