Speciality Polyamides for Metal Replacement

REPLACEMENT
FORUM 2013METALMalpensa, 6th and 7th June 2013
1
Erico SPINI, Radici Plastics MKT Director

REPLACEMENT
2

REPLACEMENT

REPLACEMENT
0
50
100
150
200
250
300
0,00% 0,50% 1,00% 1,50% 2,00% 2,50% 3,00%
Stress(Mpa)
Strain (%)
Stress-Strain Curves Comparison
(23°C, DAM, ISO 527)
PA66-GF50
Radilon® ARV500RW
+ 12 % tensile strength at break
+ 20 % tensile deformation at break

REPLACEMENT
0
20
40
60
80
100
120
0,00% 0,20% 0,40% 0,60% 0,80% 1,00% 1,20% 1,40%
Stress(Mpa)
Strain (%)
Stress-Strain Curves Comparison
(23°C, DAM) ISO 527 Double Injection
Radilon® ARV500RW
PA66-GF50
+ 30 % tensile deformation at break

REPLACEMENT
Radilon® A RV500 RW blk 339 offers higher stress and strain at
break versus standard PA66-GF50 at high speed and therefore
absorbs more energy in case of impact.
0,00
50,00
100,00
150,00
200,00
250,00
300,00
350,00
0,00% 0,50% 1,00% 1,50% 2,00% 2,50% 3,00%
Stress(Mpa)
Strain (%)
Stress-Strain Curve Comparison at Different Speeds
(23°C, DAM, ISO 527)
Rad A RV500RW : 1 mm/sec
Rad A RV500RW : 100 mm/sec
PA66-GF50 : 1 mm/sec
PA66-GF50 : 100 mm/sec

REPLACEMENT
0
20
40
60
80
100
120
2 3 4 5 6 7
Smax(Mpa)
Cycles to Failure (Millions)
Fatigue Behaviour Wöhler Diagram - Sinusoidal
Displacement, 5hz, R= min stress/max stress =0.1
23°C - RH50 (water content 1.24 %)
PA66-GF50
Radilon® ARV500RW
Radilon® A RV500 RW blk 339 higher performances versus
standard grades are fully confirmed in case of long term dynamic
loading (fatigue)

REPLACEMENT
Tensile Strength at Break is not affected by a melt temperature
until 320°C. The material has been designed to withstand high
processing temperature.
252
254
256
258
260
262
264
266
270 280 290 300 310 320 330
TensileStrength(Mpa)
Melt Temperature (°C)
Tensile Strength at Break at Different Melt
Temperatures (23°C, DAM, ISO 527)
Barrel residence
time 10 minutes

REPLACEMENT
16
Flow Length + 40%
0
100
200
300
400
500
600
700
800
60 70 80 90 100 110 120 130
SpiralLength(mm)
Injection Pressure (Bar)
Spiral Length Comparison
High Flow
Radilon® S URV600LW
PA6-GF50
High Flow
Radilon® S URV600LW
PA6-GF50

REPLACEMENT
0
20
40
60
80
100
120
140
0,00% 1,00% 2,00% 3,00% 4,00% 5,00% 6,00% 7,00%
Stress(Mpa)
Strain (%)
Stress-Strain Curve Comparison ISO 527
(DAM) at 150 °C
Radistrong® A LGF50W
PA66-GF50

REPLACEMENT
Radistrong© LGF PA66 versus PA66-GF properties comparison
Charpy Notched Impact
Impact Energy Absorption
Tensile Strength at Break
(23 °C)
(150 °C)
Elongation at BreakCreep
Heat resistance
Tensile Modulus (23 °C)
Tensile Modulus (150 °C)
PA66-GF Radistrong© LGF

REPLACEMENT
Metal Replacement
Structural Polyamides
show comparable
tensile strength at
break versus light
metal alloys
0
50
100
150
200
250
300
Al Die Cast AlloyZn Die Cast Alloy Mg Die Cast
Alloy
Radilon A RV500
RW 339 Ner
Radilon S
URV600 100 Nat
TS(Mpa)
Al Die Cast Alloy
Zn Die Cast Alloy
Mg Die Cast Alloy
Radilon A RV500 RW 339 Ner
Radilon S URV600 100 Nat
Radilon® versus metals properties comparison

REPLACEMENT
Metal Replacement
show better fatigue
behaviour than light
metal alloys
0
10
20
30
40
50
60
70
Al Die Cast Alloy Zn Die Cast Alloy Mg Die Cast Alloy Radilon A RV500 RW
339 Ner
Radilon S URV600 100
Nat
Mpa
Tensile Fatigue Limit at 7 million cycles

REPLACEMENT
Metal Replacement
show low density than
light metal alloys
0
1
2
3
4
5
6
7
Al Die Cast Alloy Zn Die Cast Alloy Mg Die Cast Alloy Radilon A RV500 RW
339 Ner
Radilon S URV600 100
Nat
g/cm3
Density

REPLACEMENT
Metal Replacement Typical Targets

REPLACEMENT
Part name : Transmission Reaction Bracket
Parts/year : 150000
Life time : 6 years
Materials : Radilon® A RV500RW versus Aluminium
Cost (€) Radilon® A RV500RW
Tool cavities : 2
Aluminium
Tool cavities : 2
Material 1 0,8
Processing 0,3 1,1
Assembly &
Finishing
0,15
Machining 0,35
Tool
Amortization
0,1 0,28
Total cost 1,55 2,53

REPLACEMENT
Virtual design from metal to plastics through optimization step.
Interactive collaboration with development partners in :
1- part design optimization
2- stress analysis
3- process analysis
STEP 1 STEP 2

REPLACEMENT
Part design approach comparison.
Part name : gas/water connector
Objective : burst pressure calculation at 23 °C
Material: Radilon A RV500RW (PA66-GF50, enhanced mech properties)
Hp 1 : isotropic material
Hp 2 : coupled process simulation + structural analysis
Type of analysis : non linear

REPLACEMENT
Part design approach comparison
Hp1 : isotropic behaviour
Stress and strain distribution, as expected, is the
same for the different part section
Calculated burst pressure is overestimated
Difference between calculated and measured burst pressure 20%

REPLACEMENT
Hp2: coupled process simulation + structural analysis
First step : moldflow analysis
Welding line presence !
Part weakest section

REPLACEMENT
Hp2: coupled process simulation + structural analysis
First step : moldflow analysis
Output : fibers orientation tensor to be used as input for structural
analysis

REPLACEMENT
Hp2 : coupled process simulation + structural analysis
Stress and strain distribution are not anymore simmetric since fiber
orientation is considered
Difference between calculated and measured burst pressure down to 5%

REPLACEMENT
35
Erico SPINI, Radici Plastics MKT Director

Speciality Polyamides for Metal Replacement

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Andere mochten auch

Andere mochten auch (16)

Ähnlich wie Speciality Polyamides for Metal Replacement

Ähnlich wie Speciality Polyamides for Metal Replacement (20)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

Speciality Polyamides for Metal Replacement