chezacarb - unipetrol · the following graphs are recommended only as a guidance for designing of...
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CHEZACARB® AC COMPOUNDS
Volume resistivity as a function of CB content (extruded sheets)
Volu
me
resi
stiv
ity (O
hm.c
m)
Materials: LDPE (MFI=20), LLDPE (MFI=20), HDPE (MFI=24), PP (MFI=3), PP (MFI=30), EVA (VA content = 28 %), ABS (MVR=19)
CHEZACARB®
Conductive Carbon Black for Polymer Compounds
Typical market segments represent extruded profiles, pipes, sheets, blown films and injection moulded parts. CHEZACARB® AC is not classified as hazardous (dangerous) according to Regulation (EC) No 1272/2008 (CLP). Information regarding risk management (occupational safety and health and storage) is available in the Announcement according to Art. 32 of the Regulation (EC) No 1907/2006 (REACH)www.unipetrolrpa.cz/en/OurProducts/Pages/Safety_sheets.aspx
Electrical and mechanical properties of the final products are determined by CHEZACARB® AC concentration, polymer type, processing technology and to a lower extent also by additives influencing quality of carbon black dispersion.
Percolation curves – the dependence of the volume resistivity on the carbon black concentration - represent first indications for choosing the appropriate dosage of carbon black to obtain required compound conductivity.
CHEZACARB® AC is used in a wide range of plastics to obtain permanently antistatic, dissipative or electro-conductive materials. It is determined to impact:
Electrical conductivity to plastics, rubber and paints
Electromagnetic properties to plastics, rubber and paints
Thermal conductivity to plastics, rubbers and paints
Pigmentation of paints and varnishes, coloration of plastics and rubber
Using percolation curves together with the dependences of mechanical properties or compounding parameters on volume resistivity help to the plastic converters to estimate the compound properties during processing alongside with its final mechanical parameters.
Materials: PA6 (MFR 230 °C/2.16 kg = 6 g/10 min), PBT (medium viscosity), PC (MFR 300 °C/1.2 kg = 20 g/10 min), PS (MFR 200 °C/5 kg= 3-4 g/10 min), POM (MVR 190 °C/2.16 kg = 12 cm3/10 min), PET (granulated flakes)
Volu
me
resi
stiv
ity (O
hm.c
m)
LDPE LLDPE HDPE PP (3) PP (30) EVA ABS
0 5 10 15 20
Carbon black content (% wt.)
Dissipativecomposites
1E+09
1E+08
1E+07
1E+06
1E+05
1E+04
1E+03
1E+02
1E+01
1E+00
Conductivecomposites
Note:Compounding: twin-screw extruder Werner-Pfleiderer ZSK25
PBT PA6 PS POM PC PET
Note:Compounding: twin-screw extruder Werner-Pfleiderer ZSK25
0 5 10 15 20
Carbon black content (% wt.)
Dissipativecomposites
1E+09
1E+10
1E+08
1E+07
1E+06
1E+05
1E+04
1E+03
1E+02
1E+01
1E+00
Conductivecomposites
CHEZACARB® AC COMPOUNDS
Flexural modulus as a function of CB content
0 5 10 15 20
Carbon black content (% wt.)
Flex
ural
mod
ulus
(MPa
)
4000
3500
3000
2500
2000
1500
0 5 10 15 20
Carbon black content (% wt.)
Flex
ural
mod
ulus
(MPa
)
3500
3000
2500
2000
1500
1000
500
0
The following graphs are recommended only as a guidance for designing of compounds in various plastic types.
LDPE LLDPE HDPE PP (3) PP (30) EVA ABS
PBT PS PA6 POM PC PET
CHEZACARB® AC COMPOUNDS
Notched Charpy Impact strength as a function of CB content
0 5 10 15 20
Carbon black content (% wt.)
Not
ched
Cha
rpy
Impa
ct s
tren
gth
at 2
3 ºC
(kJ/m
2 )
4 45
40
30
20
10
5
3 35
225
1
15
0 0
LLDPE HDPE PP (3) PP (30) ABS LDPE
Since the electrical properties of compounds strongly depend on mixing quality and processing technique, Unipetrol recommends to perform all tests in accordance with the technical standards valid for the product, before taking a final decision about the compound composition.
0 5 10 15 20
Carbon black content (% wt.)
8
7
6
5
4
3
2
1
0
PBT PS PA6 PC POM PET
Not
ched
Cha
rpy
Impa
ct s
tren
gth
at 2
3 ºC
(kJ/m
2 )
0 5 10 15 20
Carbon black content (% wt.)
Volu
me
resi
stiv
ity (O
hm.c
m) Dissipative
composites
1E+08
1E+07
1E+06
1E+05
1E+04
1E+03
1E+02
1E+01
1E+00
Conductivecomposites
CARBON BLACK/LDPE (MFI=20)
Volume resistivity as a function of CB content (extruded sheets)
Maximum tensile strain as a function of volume resistivity
Volume resistivity - extruded sheets (Ohm.cm)
Max
imum
Ten
sile
Str
ain
(%)
1E+081E+071E+061E+051E+041E+031E+021E+01
90
100
80
70
60
50
40
30
20
10
01E+00
Dissipativecomposites
Conductivecomposites
Parameter Unit Test Method CHEZACARB® AC CB1 CB2 CB3 CB4 CB5
DBP Absorption ml/100g ASTM D 2414 429 168 349 341 166 554
CHEZACARB® AC COMPARISON WITH COMPETITIVE GRADES
Carbon black 5
Carbon black 5
Chezacarb AC
Chezacarb AC
Carbon black 2
Carbon black 2
Carbon black 4
Carbon black 4
Carbon black 1
Carbon black 1
Carbon black 3
Carbon black 3
CHEZACARB® AC
Advanced Conductive
Parameter Unit Test Method Chezacarb AC - 10 Chezacarb AC - 20 Chezacarb AC - 30 Chezacarb AC - 50 Chezacarb AC - 60 Chezacarb AC - 70 Chezacarb AC - 80 Chezacarb AC - 90 Chezacarb AC - 95
Nitrogen surface area m2/g ASTM D 6556 815 - 1005 min. 810 min. 800 900 - 1100 min. 800 min. 800 min. 800 min. 800 min. 800
Iodine adsorption number mg/g ASTM D 1510 1010 - 1140 1000 - 1200 min. 900 1050 - 1200 min. 950 min. 950 min. 950 min. 950 min. 950
DBP absorption ml/100 g ASTM D 2414 365 - 400 350 - 420 min. 340 390 - 450 min. 380 min. 390 min. 390 min. 390 min. 390
Toluene extractables % wt. DIN 53553 < 0,1 < 0,1 --- < 0,1 --- --- --- --- ---
pH value EN ISO 787-9 7,0 - 9,0 7,0 - 9,5 6,5 - 9,0 6,5 - 9,0 6,5 - 9,5 6,5 - 9,5 6,5 - 9,5 6,5 - 9,5 6,5 - 9,5
Volatile matter (105 °C) % wt. EN ISO 787-2 max. 0,30 max. 0,50 max. 0,80 max. 0,80 max. 0,80 max. 0,80 max. 0,80 max. 0,80 max. 0,80
Ash content % wt. DIN 53586 max. 0,38 max. 0,4 max. 0,9 max. 1,6 max. 1,7 max. 1,8 max. 2 max. 5 max. 5
Sulphur content % wt. ASTM D 1619 max. 0,23 max. 0,3 max. 0,5 max. 0,6 max. 0,6 max. 0,7 max. 0,8 max. 0,9 max. 1,0
Fines content % wt. ISO 13322-2 max. 5 max. 8 max. 15 max. 10 max. 20 max. 20 max. 20 max. 20 max. 20
Sieve residue 0,045 mm ppm wt. ASTM D 1514 max. 50 max. 50 max. 500 max. 50 max. 500 max. 500 max. 500 max. 500 max. 500
Bulk density g/l ISO 1306 min. 118 min. 115 min. 115 min. 115 min. 112 min. 112 min. 112 min. 105 min. 105
Appar. density after tamping g/l EN ISO 787-11 140 - 160 140 - 160 --- < 150 --- --- --- --- ---
Pellets hardness avg. g ASTM D 3313 max. 10 max. 10 max. 10 max. 10 --- --- --- --- ---
Pellets hardness hardest g ASTM D 3313 max. 20 max. 20 max. 20 max. 20 --- --- --- --- ---
Specific electrical resistance Ohm.cm Philips method max. 50 max. 70 max. 80 max. 80 max. 80 max. 30 max. 20 max. 10
Vanadium content ppm RTG max. 1200 max. 2000 max. 3000 max. 5000 max. 6000 * < 8000 * < 8500 * --- ---
Nickel content ppm RTG max. 500 max. 1000 max. 1500 max. 2500 max. 3000 * --- ---
Iron content ppm RTG max. 300 max. 500 max. 1000 max. 1800 max. 2500 * --- ---
* Informative value, the exact value is not guaranteed
Carbon black CHEZACARB® AC is packed into 42 x 5 kg net PE bags on wooden heat treated pallets (210 kg/pallet), shrinked / wrapped or in 180 kg or 300 kg big bags. CHEZACARB® AC has to be stored in dry, cool and covered warehouse with effective suction, protected against heat and all sources of ignition.
Packaging, Storing and Transportation
COMMERCIAL CONTACTS
UNIPETROL Deutschland GmbHPhone: +49 (0) 6103 2058 [email protected]
UNIPETROL RPA, s.r.o.Phone: +420 476 166 [email protected]