3 July 2015
ABOUT Polyphenylene Sulfide (PPS) Polymer
Polyphenylene sulfide (PPS)
is a partially crystalline, high temperature performance polymer
that has the chemical structure shown in the figure.
This polymer has
* a high melting point of approximately 280°C,
* excellent chemical resistance and
* is inherently flame retardant. It possesses
self-extinguishing properties without
the addition of any flame retardant chemical additives.
Polyphenylene sulfide (PPS) Manufacturing
PPS may be polymerized by the polycondensation reaction of
para-dichlorobenzene (p-DCB) and sodium sulfide (Na2S)
or sodium hydro sulfide (NaSH)
in a polar solvent under elevated temperature
and pressure conditions.
PPS is created by combining various elements
- including a dehydration reaction,
sodium chloride removal reaction, exothermic reaction,
and high temperature pressurization reaction.
An overview is shown below.
The polymer in the above polymerization reaction
is processed as a molding compound
after going through a refining process and
thermal cross-linking treatment –
which results in branched PPS).
What is DIC PPS ?
DIC.PPS, an engineering compound formulated
with both glass fiber and/or mineral filler,
features the characteristics of a typical engineering thermoplastic.
However, it also exhibits
superior elevated temperature resistance,
advanced mechanical properties and
excellent dimensional stability
designed to meet demanding tight tolerance applications.
DIC.PPS is broadly classified into
two families of polymer
– chemically branched and linear polymer.
1. The branched PPS polymer exhibits
high rigidity under elevated temperature conditions.
This type delivers unique benefits associated
with resistance to creep deformation.
2. The other type is based on a linear PPS polymer and
has the desirable features associated with
tensile elongation and impact resistance. Because
the linear polymer exhibits high purity, it is less prone to
absorbing moisture under high heat and humidity conditions
compared to the cross-linked polymer.
As a result, DIC.PPS product portfolio contains
a wide variety of engineered products that can be custom formulated
to meet the most demanding performance requirements.
Versus traditional materials, such as steel or thermoset polymers,
DIC.PPS products have the engineering features
required to benefit component designers, tool designers and
polymer process specialists
which are seeking a truly engineered product.
- Heat resistance that makes continuous usage
possible at 200°C or higher - Maintains strength and high rigidity
over wide temperature ranges - PPS polymer is inherently UL V-0 (self-extinguishing)
- Excellent dimensional stability under
most environmental conditions - Chemical resistance second only to
fluorinated polymers (PTFE) - Advanced electrical properties
under high heat, high humidity, high frequencies - Very complex, high precision molding is achievable
- Very low moisture absorption
- Recyclability
(meets Green Initiative versus traditional materials)
VIEW DIC PPS GRADES GUIDE DATA PART 1
VIEW DIC PPS GRADES GUIDE DATA PART 2
ABOUT Polyphenylene sulfide PPS applications
Electronic/ Electric applications
DETAILS
Artist’s conception of the completed Europe PPS Technical Center
from the air (square-roofed building in the center)
announced today it will establish
a new polyphenylene sulfide (PPS) product technical facility
in Europe with the aim of reinforcing its ability
to address the expanding and diverse technical requirements
of its European customers.
The European PPS Technical Center, total investment
in which is estimated at approximately €2.7 million,
will be located within the site occupied
by Group company
Sun Chemical’s Eurolab, in Karlstein, Germany.
Doors are scheduled to open in November 2015,
although analysis-related operations,
which will use existing resources,
are expected to begin in September 2015
Profile of New Technical Center
Name of facility: Europe PPS Technical Center
Address: An den Hirtenäckern 15,
D-63791 Karlstein am Main, Germany
Total investment: Approximately €2.7 million
Start of operations: November 2015
( Analysis-related operations are expected
to start in September 2015)
WWW.CHEMWINFO.COM BY KHUN PHICHAI
