Epoxidised Natural Rubber
(Grade Name: ENR25, ENR50)
Epoxyprenes
are NATURAL RUBBER (cis 1,4-polyisoprene)with
epoxidised group randomly with 25% or 50%.
(ENR 25 for 25%,
ENR 50 for 50%)
1. Advantages:
1)
Excellent damping & anti-vibration
property
2)
Better air impermeability
( air holding property as Butyl rubber)
3)
Oil resistance
4)
Improved compatibility with polar
polymers such as PVC, NBR, ECO etc.)
5)
Non oil oriented Polymer (Environmental
friendly)
Adding advanced property on Natural Rubber or replacement of
synthetic rubber?
2.
Properties
Property
|
ENR 25 |
ENR50 |
|
Epoxide
Level (%) |
25 |
50 |
|
Glass
Transition Temp. (℃) |
-47 |
-24 |
|
Density
(Mg/m3) |
0.97 |
1.02 |
|
Solubility
Parameter(jm-3)0.5 |
17.4 |
18.2 |
|
Mooney
Viscosity(ML1+4,100C) |
70-90 |
70-90 |
|
Protein
level(amg/g, rubber) |
0.0008 |
0.0008 |
|
Latex
allcrgen activity |
2-4 |
2-4 |
* The ENR is holding
properties’ of Natural Rubber and then put some advantages as mentioned
in addition.
* The mixing behavior and curing system are similar to Natural Rubber, in
special; the mooney viscosity is broken down easier than Natural Rubber.
* The production site is located at south of
* The packaging is 34 kgs bale, around 1,200kgs/pallet
3. Application
ENR 25 and ENR50 are used in anti-vibration
mountings, surrounds for audio speakers, machinery, road vehicles and
railway coaches. High damping is also advantageous in shock absorption, eg footwear
components such as heel inserts or mid sole components. Acoustic
devices such as constrained layer damping components have been
constructed to reduce noise emission from vibrating pannels in machinery or
automotive vehicles. This is also being used as modifier
for epoxy resin, which can put elastic property. Tire for
mountain bike by the damping property as well as air impermeability and
easy blend with NR is one of unique applications. The advanced properties shall
be suitable for your new development.
For more
information, samples request etc., please feel free to contact us by e-mail
Jiraphat@san-thap.co.th, Panaphun@san-thap.co.th and call our
office at +66 2-6525100.
Persons in charge: Ms.Jiraphat,
Mr.Panaphun
San-Thap
International Co., Ltd.
15th
Floor,
Tel: 66 2-6525100
Fax: 66 2-6525103 http://www.san-thap.co.th
(You can get more
information at our website.)