1. No category

HIGH-PERFORMANCE PLASTICS FOR
INDUSTRIAL APPLICATIONS
INJECTION MOULDING IN THE HOT RUNNER SYSTEM.
BETTER WITH INSULATION CAPS MADE OF
DOGLIDE 350.
®
GERMAN ENGINEERING
Precise temperature control and a quick change-over
of injection materials with insulation caps made of
high-performance plastic DOGLIDE 350
®
What is the main reason of insulation caps in hotrunner technology for the
automated injection moulding of thermoplastics? Well, a rather important one!
They reduce the time for changing the injection material due to the fact that
the pre-chamber area is not filled with plastic. Therefore, the risk of colour
mixing and bubble formation is minimised. As a result, difficult colour
changes, such as from black to white, or for crystal clear polycarbonate
melting, carbon-fiber-reinforced plastic or metal filling as well as heatsensitive materials such as PE, PP, PA, POM, PVC, PUR and others are
no longer a problem.
What is special about DOGLIDE® 350?
Compared to conventional materials, DOGLIDE 350 has a number of remarkable properties, such as
(the exact technical data on the right):
Continuous temperature resistance up to 280 °C (up to 400 °C for short periods of time)
Dimensional stability with good mechanical strength
Low thermal conductivity of 0.2 W/mk
Insulation caps made of DOGLIDE 350 guarantee a precise temperature control. At the same time, the
caps are extremely safe even under the most challenging pressure and temperature conditions.
Why does the
material matter, from which
the insulation caps are
made?
Storage modulus
Comparison of storage modulus E‘ (DMA)
3-point bending test, 1 Hz, 2 K/min
Conventional insulation caps
(also called colour change caps) are
made of PEEK, PTFE or titanium.
With DOGLIDE 350, DOTHERM offers a
high-quality alternative based on
in-house developed highperformance plastic.
High mechanical stability across the entire temperature range compared to PEEK
Technical data DOGLIDE® 350 (G)
High-temperature polyimide
Material description
with graphite (15%)
greenish grey
Bearing bushes, thrust washers
Blanks, round bars and components acc. to drawings
Thermal properties
Mechanical and physical properties
Properties
Unit
Tensile strength
[MPa]
[%]
Test method/
standard
DIN EN ISO 527
Value
DOGLIDE®
350
DOGLIDE®
350 G
70
60
3.4
3.0
Tensile modulus
[MPa]
2430
2850
Bending strength
[MPa]
105
80
Bending elongation
natural
Valve seats, mechanical and plant engineering parts,
insulators, seals & gaskets
Delivery formats
Elongation at failure
DOGLIDE® 350 G
ochre/beige
Colour
Application
DOGLIDE® 350
[%]
Unit
Test method/
standard
Application temperature
permanent
[°C]
-
[°C]
-
Application temperature
short-term (under a small
Value
DOGLIDE®
350
DOGLIDE®
350 G
280
280
load)
3.8
3.0
<3h
400
400
Bending modulus
[MPa]
3060
3170
<1h
450
450
Compressive strength
[MPa]
600
350
Compressive stress
[MPa]
150
150
Linear thermal
expansion coefficient
62
40
at 10% compression
Compressive stress
[MPa]
DIN EN ISO 178
Properties
DIN EN ISO 604
560
330
4520
3940
EN ISO 868
82
82
-
0.46
0.35
0.65
0.28
at 50% compression
Compressive modulus
Shore hardness
Friction coefficient
static
dynamic
Wear
[MPa]
[Shore D]
-
0.35
0.21
-
-
resistant
resistant
Specific density
[g/cm3]
-
1.27
1.33
Water absorption
[%]
DIN EN ISO 62
24 h at 23 °C
48 h at 23 °C
DIN 53752/TMA
[J/g x K]
DSC
1.138
1.080
Thermal conductivity
[W/m x K]
DSC
0.204
0.304
Glass transition temperature
Tg (tan deltamax)
[°C]
DMA
362
361
Unit
Test method/
standard
-1
[m]
[g/kWh]
Oil/grease resistance
[10 x K ]
Specific
thermal capacity
-6
Electrical properties
Properties
DOGLIDE®
350 G
0.8
100 Hz
3.29
-
1.1
1 kHz
3.29
-
3.28
-
3.26
-
100 Hz
4.8 x 10-3
-
1 kHz
1.5 x 10-3
-
10 kHz
3.1 x 10-3
-
100 kHz
6.8 x 10-3
-
1.0 x10
-
DIN IEC 93
3.0 x 1016
-
Dielectric constant
0.6
0.8
Value
DOGLIDE®
350
96 h at 23 °C
1.2
1.6
10 kHz
3 weeks at 23 °C
2.2
2.7
100 kHz
24 h at 80 °C
1.7
2.2
48 h at 80 °C
2.1
2.6
Dielectric
loss factor
96 h at 80 °C
2.7
2.9
3 weeks at 80 °C
-
-
-
Specific
surface resistance
[Ω]
Specific
volume resistivity
[Ωm]
Creep resistance
DOTHERM supplies insulation caps made of DOGLIDE 350 for your
specific application. Precision-manufactured according to your
drawing.
-
Dielectric
strength
Fire protection class
IEC 60250
15
-
DIN EN 60112
CTI 175
-
kV/3 mm
DIN IEC 60243-1
87
21
-
UL 94
V0
As of date:
05/2014
GERMAN ENGINEERING
Artwork www.zorro5.com
If you would like to know more,
please contact us.
Further information
+49 231. 925 000-561
1910-Y-00xx
www.dotherm.com
DOTHERM GmbH & Co. KG
Hesslingsweg 65 - 67 | D-44309 Dortmund / Germany
Phone +49 (0) 231. 9250 00-0 | Fax +49 (0) 231. 9250 00-80
[email protected] | www.dotherm.com
A member of the
MOESCHTER GROUP