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PE cable materia
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PE cable materia

PE is a polyethylene compound, mainly divided into high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE).

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    product feature

    1.HDPE is a kind of high crystallinity, non-polar thermoplastic resin produced by ethylene copolymerization. The appearance of the original HDPE is milky white, and it is translucent to a certain extent in the meager section. It has excellent resistance to most domestic and industrial chemicals, and it can resist the corrosion and dissolution of strong oxidants (concentrated nitric acid), acid and alkali salts and organic solvents (carbon tetrachloride). The polymer does not absorb moisture and has good water resistance to steam, which can be used for moisture and seepage protection.
    2.MDPE is characterized by environmental stress cracking resistance and long-term strength retention. The relative density of MDPE is 0.926-0.953, the crystallinity is 70%-80%, the average molecular weight is 200,000, the tensile strength is 8-24 mpa, the elongation at break is 50%-60%, the melting temperature is 126-135℃, and the melt flow rate is 0.1-35 g /10 minutes. Thermal deformation temperature (0.46 mpa)49-74℃.
    3. Low density polyethylene is the lightest variety in polyethylene resin. Compared with high-density polyethylene, its crystallinity (55%-65%) and softening point (90-100 ℃) are lower. It has good softness, extensibility, transparency, cold resistance and processability. Its chemical stability is good, can withstand acid, alkali and salt aqueous solution; Good electrical insulation and gas permeability; Low water absorption; Easy to burn. The property is soft, with good extensibility, electrical insulation, chemical stability, processing performance and low temperature resistance (resistance to -70℃).
    4. Compared with LDPE, LLDPE has the advantages of high strength, good toughness, strong rigidity, heat resistance, cold resistance, etc.LLDPE also has good environmental stress cracking resistance, tear resistance and other properties, and can resist acid, alkali, organic solvents and so on.
    Note: PE plastic particles are widely used and need to be customized according to customer requirements in different scenarios.

    Product parameter

    Name

    HDPE

    LDPE

    LLDPE

    Odor, toxicity

    Non-toxic,tasteless, odorless

    Non-toxic,tasteless, odorless

    Non-toxic,tasteless, odorless

    Density

    0.940~0.976g/cm3

    0.910~0.940g/cm3

    0.915~0.935g/cm3

    Crystallinity

    85%-65%

    45-65%

    55-65%

    Molecular structure

    Contains only carbon-carbon and carbon-hydrogen bonds, which require more energy to break

    The polymer has a smaller molecular weight and requires less energy to break

    Linear structure, fewer branch chains, short chains, require less energy to break

    Softening point

    125-135℃

    90-100℃

    94-108℃

    Mechanical property

    High strength, good toughness, strong rigidity

    Poor mechanical strength

    High strength, good toughness, strong rigidity

    Tensile strength

    High

    Low

    Higher

    Elongation at break

    Higher

    Low

    High

    Impact strength

    Higher

    Low

    High

    Moisture-proof and water-proof performance

    It has good permeability to water, water vapor and air, low water absorption and good permeability resistance

    Poor moisture and air insulation

    It has good permeability to water, water vapor and air, low water absorption and good permeability resistance

    Acid, alkali, corrosion, organic solvent resistance

    Resistant to strong oxidant corrosion; Resistant to acid, alkali and various salts; Insoluble in any organic solvent, etc.

    Acid, alkali, salt solution corrosion resistance, but poor solvent resistance

    Resistant to acid, alkali and organic solvents

    Heat resistance/cold

    Good heat and cold resistance, at room temperature and even at -40F low temperature, excellent impact resistance, low temperature embrittlement temperature < -90℃

    Low heat resistance, low temperature embrittlement temperature <-70℃

    Good heat and cold resistance Low temperature embrittlement temperature < -90℃

    Resistance to environmental stress cracking

    Good

    Better

    Good
     
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