联系人 Lee
GuaJiaLin, Cangzhou, Hebei
【 properties 】
High density polyethylene for white particles, non-toxic,
tasteless, odourless, melting point is **0 ℃, the relative density
of 0.**1 ~ 0.**0. 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 **0 ~ **0 c. For larger molecular
materials, it is recommended that the melting temperature range
between **0 ~ **0 c.
【 characteristics 】
A variety of unique characteristics of grade HDPE is the
appropriate combination of four basic variables: density, molecular
weight, molecular weight distribution and additive. Different
catalyst is used in the production of customized special
performance polymers. These variables combine to produce different
USES of the HDPE grade; In performance to achieve the best
balance.
"Density"
This is the main variable decided to HDPE features, although
mentioned four variables does influence each other. Ethylene is a
major raw material of polyethylene, few other monomer, such as a 1
butene, l alone or a 1 octene, often used for improving the
performance of polymer, the HDPE, more than a handful of monomer
content is generally not more than 1% - 2%. The addition of monomer
slightly reduced the crystallinity of polymer. This kind of change
is usually measured by density, density and crystallization rate of
a linear relationship. The United States generally classified
according to the provisions of the ASTM D***8 HDPE density in 0.**0
g/CC above; Medium density polyethylene (MDPE) density range of
0.**6 ~ 0.**0 g/CC. Other classification the MDPE sometimes
classified as HDPE or LLDPE. Homopolymer has the highest density,
maximum stiffness, good permeability and high melting point, but
generally has a poor resistance to environmental stress cracking
(ESCR). ESCR is PE caused by mechanical or chemical stress cracking
resistance ability. Higher density generally improved mechanical
strength properties, such as tensile strength, rigidity and
hardness. Thermal properties such as softening point temperature
and thermal deformation temperature; The permeability, such as
permeability and water vapour permeability. Improve its impact
strength and low density E - SCR. Density of the polymer is mainly
affected by monomer to join, but is less affected by the molecular
weight. High molecular weight percentage density slightly reduced.
For example, in a relatively wide range of homopolymer with
different molecular weight density.
国家: | China |
型号: | - |
离岸价格: | 400 ~ 600 / Ton 获取最新报价 |
位置: | Zi Bo |
最小订单价格: | 400 per Ton |
最小订单: | 1 Piece |
包装细节: | boundle |
交货时间: | 20DAYS |
供应能力: | 100 Ton per Week |
付款方式: | L/C, T/T |
產品組 : | - |