High Density Polyethylene HDPE Polyethylene
HDPE (High Density Polyethylene, referred to as "HDPE"), is a kind of High crystallinity, nonpolar thermoplastic resin.Square one HDPE appearance has milk-white, in a small cross section in a certain degree of translucent.PE has excellent resistance to most of the life and the characteristics of industrial chemicals.
HDPE is a kind of high crystallinity, nonpolar thermoplastic resin.High density polyethylene for white particles, non-toxic, tasteless, odourless, melting point is 130 ℃, the relative density is 0.941 ~ 0.960.It has good heat resistance and cold resistance, good chemical stability, also has high rigidity and toughness, good mechanical strength.Dielectric properties, environmental stress cracking resistance is also good.The melting temperature of 120 ~ 160 ℃.For larger molecular materials, it is recommended that the melting temperature range between 200 ~ 250 ℃.High density polyethylene is a kind of white powder granular products, non-toxic, tasteless, within the range of 0.940 ~ 0.976 g/cm3 density;Crystallinity is 80% ~ 80%, softening point is 125 ~ 135 ℃, using temperature is 100 ℃;Hardness, tensile strength and creep is better than that of low density polyethylene;Wear resistance, electrical insulation, good toughness and cold tolerance but compared with low density dielectric slightly worse;Good chemical stability, at room temperature, does not dissolve in any organic solvent, acid, alkali and corrosion of various salts;Small thin film on the permeability of water vapor and air, water imbibition low;Aging resistance is poor, environmental cracking resistance than low density polyethylene, especially hot oxidation will make its performance, so the resin need to add the antioxidant and uv absorber, etc to improve improve the deficiency of.High density polyethylene film under the force of the thermal deformation temperature is low, should pay attention to this application.[1-2]
Chinese High Density Polyethylene English name High Density Polyethylene "don't say low ethylene melting point 130 ℃ degree is 0.941 ~ 0.960The serial number
project
Refers to the standard
LDPE
lldpe
Eva
hdpe
ordinary
Environmental protection
1
The thickness of mm
0.2 to 3.0
0.2 to 3.0
0.2 to 4.0
0.2 to 4.0
2
The width of the m
2.5 to 9.0
2.5 to 9.0
2.5 to 8.0
2.5 to 8.0
3
Tensile strength (Mpa)
> = 14
> = 16
00000000
> = 17
> = 25
4
The elongation at break (vertical and horizontal) %
> = 400
> = 700
> = 550
> = 450
> = 550
5
Rectangular tear strength N/mm
> = 50
> = 60
> = 60
> = 80
> = 110
6
Water vapor permeability coefficient g. cm/c ㎡. S. pa
< 1.0 * 10
< 1.0 * 10
< 1.0 * 10
-- -- --
-- -- --
7
Using the temperature range
+ 70 ℃ ﹋ - 70 ℃
+ 70 ℃ ﹋ - 70 ℃
+ 70 ℃ ﹋ - 70 ℃
-- -- --
-- -- --
8
Carbon black content %
-- -- --
-- -- --
-- -- --
2.0 to 3.0
9
Resistance to environmental stress cracking F
-- -- --
-- -- --
-- -- --
> = 1500
10
Impact - 70 ℃ low temperature embrittlement performance
-- -- --
-- -- --
-- -- --
Through the pass
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