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    Polyethylene granules
    • Polyethylene granules
    • Polyethylene granules
    • Polyethylene granules
    • Polyethylene granules

    Polyethylene granules

    HS Code:3902100090

    Color: Transparent/Translucent/Opaque

    Melt flow rate or Melt index:2-60

    CAS: 9002-88-4

    Packing:25KG/Bag

    Properties of PE


    Mechanical: Polyethylene is of low strength, hardness and rigidity, but has a high ductility and impact strength as well as low friction.


    Thermal: The commercial applicability of polyethylene is limited by its low melting point compared to other thermoplastics. For common commercial grades of medium- and high-density polyethylene the melting point is typically in the range 120 to 130 °C (248 to 266 °F). The melting point for average commercial low-density polyethylene is typically 105 to 115 °C (221 to 239 °F). These temperatures vary strongly with the type of polyethylene, but the theoretical upper limit of melting of polyethylene is reported to be 144 to 146 °C (291 to 295 °F).


    Chemical: Polyethylene consists of nonpolar, saturated, high-molecular-weight hydrocarbons. Therefore, its chemical behavior is similar to paraffin.

    The individual macromolecules are not covalently linked. Because of their symmetric molecular structure, they tend to crystallize; overall polyethylene is partially crystalline. Higher crystallinity increases density and mechanical and chemical stability.

    Most LDPE, MDPE, and HDPE grades have excellent chemical resistance, meaning that they are not attacked by strong acids or strong bases and are resistant to gentle oxidants and reducing agents. 

    Polyethylene absorbs almost no water. The gas and water vapour permeability (only polar gases) is lower than for most plastics; oxygen, carbon dioxide and flavorings, on the other hand, can pass it easily.PE can become brittle when exposed to sunlight, carbon black is usually used as a UV stabilizer.

    Polyethylene cannot be imprinted or bonded with adhesives without pretreatment. High-strength joints are readily achieved with plastic welding.


    Electrical: Polyethylene is a good electrical insulator. It offers good electrical treeing resistance; however, it becomes easily electrostatically charged (which can be reduced by additions of graphite, carbon black or antistatic agents).


    Optical: Depending on thermal history and film thickness, PE can vary between almost clear (transparent), milky-opaque (translucent) and opaque. LDPE has the greatest, LLDPE slightly less, and HDPE the least transparency. Transparency is reduced by crystallites if they are larger than the wavelength of visible light.


    Classfication of PE:

    Polyethylene is classified by its density and branching. Its mechanical properties depend significantly on variables such as the extent and type of branching, the crystal structure, and the molecular weight. There are several types of polyethylene:

    Ultra-high-molecular-weight polyethylene (UHMWPE)

    Ultra-low-molecular-weight polyethylene (ULMWPE or PE-WAX)

    High-molecular-weight polyethylene (HMWPE)

    High-density polyethylene (HDPE)

    High-density cross-linked polyethylene (HDXLPE)

    Cross-linked polyethylene (PEX or XLPE)

    Medium-density polyethylene (MDPE)

    Linear low-density polyethylene (LLDPE)

    Low-density polyethylene (LDPE)

    Very-low-density polyethylene (VLDPE)

    Chlorinated polyethylene (CPE)

    With regard to sold volumes, the most important polyethylene grades are HDPE, LLDPE, and LDPE.





    Hot Tags: Polyethylene granules, manufacturers, suppliers, factory, Customized

    HDPE/GC 7260/ Leander Basel

    Specification use





    Specification level

    High rigidity Other injection molding

    Appearance color




     

    The purpose of the material




    Notes

    Good fluidity, high stiffness, low warp



    Technical parameters





     

    Performance projects

    Test conditions (status)

    The test method

     

    Test data

    The data unit

     

    Basic performance

    density


    ISO 1183

    0.96

    g/cm3

     

    Melting index

    190℃/2.16kg

    ISO 1133

    8

    g/10min

    190℃/5.0kg

    ISO 1133

    23

    g/10min

     

     

     

     

     

    Mechanical properties

     

    Stretch modulus


     

    ISO 527-2

     

    1350

     

    MPa

    Stretch yield stress


    ISO 527-2

    30

    MPa

    Stretch yield strain


    ISO 527-2

    10

     

     

    Shore hardness


    ASTM D-2240

    64


    Ball indentation hardness

    H 132/30

    ISO 2039-1

    57

    MPa

    thermal performance

    Vika softens the temperature


    ISO 306/B50

    72

     

    Other performance

    Full-gap creep test

    80℃,2.5MPa

    Internal

    Method

    1.5

    hr

    Spiral flow length

    <250℃

    Internal

    Method

    490

    mm


    Related Industry Products
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    • Thermoplastic resin extrusion or injection molding of the tubular plastic billet, while hot (or heated to soften the state), placed in the split mold, closed immediately after the billet into the compressed air, the plastic billet blowing and close to the inner wall of the mold, after cooling stripping, that is, a variety of hollow products.

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