Alro Plastics - Polypropylene

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POLYPROPYLENE

Polypropylene is an economical material that offers a combination of outstanding physical, chemical, mechanical, thermal and electrical properties not found in any other thermoplastic. Polypropylene is a high corrosion resistant material that has high temperature and tensile strength. Polypropylene possesses excellent resistance to organic solvents and degreasing agents as well as electrolytic attack.

Compared to low or high density polyethylene, polypropylene has a lower impact strength but superior working temperatures and tensile strength. In addition, polypropylene is lightweight, stain resistant and has a low moisture absorption rate.

Product Applications

Acid Tank/Lineup
Battery Cases
Cutting Boards
Ducts, Etching Machines and Rinse Tubs
Fume Hoods
Machined Parts

Metal Plating Barrels
Orthopedic Appliances
Plating Modules
Radio and Television Equipment
Scrubbers, Scrub Stations and Tank Covers

Industries Served

Anodizing
Chemical
Dyeing and Bleaching
Electronics
Fertilizer
Marine
Paper
Petroleum
Pharmaceutical

Plating
Food Processing
Utilities
Steel
Pickling
Tanning
Textile
Transportation
Waste Treatment and Water Treatment

Typical Physical Properties

Abrasion resistant
Lightweight
Broad color availability
Low cost fabrications
Dimensionally stabile
Machinable
Design freedom

Maintenance free
Excellent electrical properties
Weldable
Formable
Easily cleaned
High impact resistant

Polypropylenes

Homopolymer

The most widely used of three grades, this crystalline material is noted for its high strength-to-weight ratio, excellent chemical resistance and high performance in thermoforming and corrosive environments. Homopolymer also:

Is appropriate for applications to 180ºF (82ºC)

Resists most acids, alkalis and solvents

Meets FDA 21CFR Section 177.1520 (including white)

Is USDA approved for use in federally inspected meat and poultry packing facilities

Is available in natural.

Also is available in black and white sheet, film masked one side.

White Homopolymer

Using advanced quality control measurement systems, Poly Hi Solidur has systematically and dramatically achieved the bright white specified by the semiconductor industry. With all the advantages of the original homopolymer, these extruded sheets have a gloss second to none. This product (white) comes with one side film masked and is also available with two-side masking.

V-0 Flame Retardant

V-0 Flame Retardant offers expanded design options with white polypropylene and a UL 94 flammability rating of V-O. You can address flame retardant criteria while retaining aesthetics and high performance.

Copolymer

Ethylene, a second monomer, is introduced in the polymerization process to achieve better cold impact strength and other toughness characteristics. Key benefits include:

Performs in applications to 170ºF (77ºC)

Exhibits higher impact strength

Has cold weather impact resistance to -34ºF (-37ºC)

Physical Properties

Test Name	ASTM Test Method	Homopolymer Polypropylene	Copolymer Polypropylene	Flame Retardant Polypropylene
Test Name	ISO Equivalent
Density, g/cm³	D792	0.905	0.897	0.954
Density, g/cm³	1183: 1987
Tensile Strength at Yield, PSI-MPa	D638	4800	4000	3200
Tensile Strength at Yield, PSI-MPa	527-1 & 2: 1993	33.1	27.6	22.1
Tensile Elongation at Yield, %	D638	12%	23%	N.A.
Tensile Elongation at Yield, %	527-1 & 2-1993
Tensile Modulus, PSI-MPa	D638	195,000	N.A.	N.A.
Tensile Modulus, PSI-MPa	527-1 & 2: 1993	1345	N.A.	N.A.
Flexural Strength, PSI-MPa	D790	7000	5400	N.A.
Flexural Strength, PSI-MPa	178: 1993	48.3	37.3	N.A.
Flexural Modulus, PSI_MPa	D790	180,000	160,000	145,000
Flexural Modulus, PSI_MPa	178: 1993	1240	1100	1000
Izod Impact - Notched, Ft.lb./in. @ 73°F kJ/m2@23°C	D256	1.9	7.5	0.15
Izod Impact - Notched, Ft.lb./in. @ 73°F kJ/m2@23°C	180: 1993	4.0	15.8	0.32
Heat Deflection Temp. °F @ 66 PSI °C @ 0.45 MPa	D648	210	173	N.A.
Heat Deflection Temp. °F @ 66 PSI °C @ 0.45 MPa	75-1 & 2: 1993	99	78.3	N.A.
Mean Coefficient of Linear Thermal Expansion In./In./°F	D696	4.3 x 10^-5	4.6 x 10^-5	N.A.
Hardness - Rockwell R or Shore D where noted	D785	92	80	N.A.
Water Absorption , %	D570	0.008	0.01	N.A.
Water Absorption , %	62: 1980	0.008	0.01	N.A.
Flamability Rating	UL-94	H.B.	N.R.	V-0, 5-VA
Maximum Operating Temperature	°F	180	170	180
Maximum Operating Temperature	°C	82	77	82

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