MDPE - شرکت مواد شیمیایی آرنیکو

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Medium-Density Polyethylene (MDPE - Gas Pipe & Film Grade)

MDPEMDPE

“The balanced, stress-crack resistant polymer: the safe, flexible backbone of gas distribution networks.” Arnico’s Medium-Density Polyethylene (MDPE) is the high-performance copolymer engineered for the perfect balance of strength and flexibility. With a density between HDPE and LDPE, its exceptional Environmental Stress Crack Resistance (ESCR) makes it the material of choice for the natural gas distribution pipes that safely run beneath our streets. It also provides the toughness needed for heavy-duty films and durable blow-molded containers. For critical, long-term, and safety-sensitive applications, our MDPE provides the trusted, reliable performance that infrastructure demands.

Description More

1. Product Introduction & Main Application

Arnico’s Medium-Density Polyethylene (MDPE) is a thermoplastic with a medium density (0.926-0.940 g/cm³), possessing properties between HDPE and LDPE. This material is produced from the copolymerization of ethylene with alpha-olefins and, due to its ideal balance of strength and flexibility, is primarily used in the production of municipal gas distribution pipes, cold water pipes, high-strength films, and blow-molded parts with high Environmental Stress Crack Resistance (ESCR).

2. Technical Specifications

Technical Parameter	Gas Pipe Grade	Film & Packaging Grade	Unit
MFI (190/5.0 kg)	0.20 – 0.30	0.4 – 0.8 (2.16 kg)	g/10min
Density	0.935 – 0.940	0.930 – 0.935	g/cm³
Environmental Stress Crack Resistance (ESCR)	> 1000	> 500	hours
Tensile Strength at Yield	≥ 20	≥ 18	MPa
Vicat Softening Point	≥ 120	≥ 115	°C

3. Features & Benefits

Exceptionally High ESCR: Exceptional resistance to crack growth caused by environmental stresses, vital for gas distribution networks.
Impact Resistance & Flexibility: Does not become brittle at low temperatures, allowing for easier pipe installation.
Chemical & Corrosion Resistance: Inert to soil, moisture, and the conveyed gas.
Thermal Weldability: Creates homogeneous, leak-proof joints.

4. Industrial Applications

Gas Pipes & Fittings: Municipal and industrial gas distribution networks.
Water Pipes: Cold water plumbing pipes.
Packaging: High-strength and high-toughness films.
Blow-Molded Parts: Chemical bottles and fuel tanks.

5. Safety & Handling

MSDS (Material Safety Data Sheet): The material is non-toxic and safe. Vapors are released at processing temperatures. The Arnico MSDS file must be obtained.
Storage Conditions: Store in 25kg bags in a dry, cool warehouse.
Personal Protective Equipment (PPE): Gloves for handling hot granules.

6. Quality Assurance & COA

Arnico MDPE shipments are accompanied by a complete Certificate of Analysis (COA) detailing the MFI and ESCR values.

Technical documents for the product MDPEMDPE including the Technical Data Sheet (TDS), Material Safety Data Sheet (MSDS), and Certificate of Analysis (COA), are available to customers upon request.

To receive these documents and further information, please contact our technical or sales department, or reach out to us via email.