ABSORTOMER™

Alpha-olefin copolymer

日本語English
  • Basic information

 

What is ABSORTOMERTM

ABSORTOMERTM is a new olefin based polymer with molecular structure optimized at nano-meter level with the use of Mitsui Chemicals’ long-cultivated catalyst technology. At low temperature, it has a hard feel and keep its shape.

When heated, it changes to a soft, flexible feel. Absortomer is supplied in pellet form. When mixing different materials during moulding, the following features and properties can be achieved. This can contribute to the development of unique products.

Physical Properties List

 

We sell currently below 2 grades

 

Item

Unit

EP-1001

EP-1013

MFR

(230 °C, 2.16kgf)

g/10min

10

10

Lightweight

Density

kg/m3

840

838

Flexibility

Surface hardness (Shore A)

Immediately

After 15sec.

A93

A70

D69

D55

Mechanical properties

Young modulus

MPa

80

450

Elongation at break

%

500

400

Tensile strength at break

MPa

27

30

Heat resistance

Tm

°C

-

130

Tg

°C

30

40

Energy Absorption

tan d

peak value

2.7

0.93

Temperature giving tanδ peak

°C

30

43

 

Stress Absorption (high tanδ)

This ABSORTOMERTM has tangent delta peak at room temperatures and is three times better than styrene based elastomers. It also shows excellent damping and stress relaxation properties. At lower temperatures than the peak of tangent delta, it feels hard and keep its shape. At higher temperatures than the peak of tangent delta, it becomes soft and flexible.

Damping properties

ABSORTOMERTM has excellent vibration absorption on the low-frequency side (-10Hz). Furthermore, when compounding with EPDM, it is possible to shift the tanδ peak values to different high frequencies (ABSORTOMERTM cannot be cross-linked).

 

 

Stress relaxation and absorption

ABSORTOMERTM has excellent stress relaxation and stress absorbing properties.

If a certain load is constantly applied to ABSORTOMERTM, the load decreases within a certain time. In case of Polyolefin based elastomers, generally, no decrease of load can be noticed, even after a certain time. The reason is that there is no stress absorption.

 

 

 

 

 

 

 

 

 

Contact Us

Elastmers Division
TEL+81-3-6253-3446
FAX+81-3-6253-4218