1. Home
  2. Sealing Materials and Data Sheets
  3. PPL (Polypropylene)

Polypropylene (PPL)

Polypropylene (PP) is a thermoplastic polymer, which can be used as a plastic, as well as a fiber. The plastic is used to construct various household, commercial, and industrial applications. This non-toxic plastic exhibits outstanding chemical, physical, mechanical, and thermal properties, which are not found in any other thermoplastic.

Beneficial Features and Chemical Properties of Polypropylene

PP is one of the most popular types of thermoplastic due to the following reasons:

  • High Operational Temperature and Melting Point: The plastic has a melting point of 320 degrees F, which is why it is used in applications, where temperatures may rise as a result of processing.
  • Easy to Customize: PP is an elastomer, which means it can be easily customized and fabricated to any desired shape. Manufacturers add additives to improve its physical and chemical properties.
  • Excellent Resistance against Variety of Elements: The plastic is highly resistant to organic solvents, water, and acid, alkalis, and electrolytic attacks.
  • Durable: The plastic is durable, does not absorb water, and can withstand daily stress.
  • High Compressive and Tensile Strength: PP has high compressive and tensile strength, which means it can resist stress and cracking.
  • Recyclable: PP is non-staining, non-toxic, and fully recyclable.

Fabrication Techniques

Polypropylene can be fabricated in any of the following ways:

  • Hot gas welding
  • Spin welding
  • Fusion & butt welding
  • Machining with wood or metal working tools
  • Vacuum forming
  • Ultra-sonic sealing

Applications

  • Chemical resistant tanks & linings
  • Microwave
  • Plating barrels & tanks
  • Carpets
  • Laboratory consoles, sinks, & ducts
  • Lavatory partitions
  • Filter press plates
  • Prosthetic devices
  • Railroad crossing components
  • Die cutting pads
  • Clean room walls, floors, & ceilings
  • Garden furniture
  • Pump components & housings

print HPU SHEET

SSP Manufacturing, Inc.

Phone: 1-908-852-3125     Email: gm@sspseals.com

Data Sheet for PPL (Polypropylene)

ASTM or UL test Property Homopolymer Co-Polymer Flameb Retardant

PHYSICAL

D792 Density (lb/in³)
(g/cm³)		 0.033
0.905		 0.033
0.897		 0.035
0.988
D570 Water Absorption, 24 hrs (%) <0.01 0.01 0.02

MECHANICAL

D638 Tensile Strength (psi) 4,800 4,800 4,300
D638 Tensile Modulus (psi) 195,000 - -
D638 Tensile Elongation at Yield (%) 12 23 28
D790 Flexural Strength (psi) 7,000 5,400 -
D790 Flexural Modulus (psi) 180,000 160,000 145,000
D695 Compressive Strength (psi) 7,000 6,000 -
D695 Compressive Modulus (psi) - - -
D785 Hardness, Rockwell R 92 80 -
D256 IZOD Notched Impact (ft-lb/in) 1.9 7.5 0.65

THERMAL

D696 Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) 6.2 6.6 -
D648 Heat Deflection Temp (°F / °C)
at 66 psi
at 264 psi
210 / 99
125 / 52
173 / 78
110 / 43
106 / 41
57 / 14
D3418 Melting Temperature (°F / °C) 327 / 164 327 / 164 327 / 164
- Max Operating Temp (°F / °C) 180 / 82 170 / 77 180 / 82
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)
0.76-0.81
2.6-2.8
-
-
-
-
UL94 Flammability Rating HB n.r. V-O

ELECTRICAL

D149 Dielectric Strength (V/mil) short time, 1/8" thick 500-660 475 500-650
D150 Dielectric Constant at 1 kHz 2.25 2.2-2.36 2.3
D150 Dissipation Factor at 1 kHz 0.0005-0.0018 0.0017 -
D257 Volume Resistivity (ohm-cm) at 50% RH 8.5 x 1014 2 x 1016 1015
D495 Arc Resistance (sec) 160 100 -

Polypropylene is a human-friendly thermoplastic polymer, which exhibits high thermal, chemical, physical, and electrical properties. Polypropylene resists degreasing agents, organic solvents, and electrolytic attacks.
This material is FDA Approved (FDA CFR 21-177.2600 Compliant)
FDA Approved Seals & Gaskets