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TABLE OF CONTENTS
5 KOLON PLASTICS at a glance
7 KOCETAL® (POM)
CHARACTERISTIC OF KOCETAL®
8 APPLICATIONS
10 OVERVIEW PRODUCT PORTFOLIO
11 NOMENCLATURE
12 THE PROPERTIES OF KOCETAL®
18 INJECTION CONDITIONS & HANDLING PRECAUTIONS
54
KOLON PLASTICS at a glance
KOLON PLASTICS always offer the best solution to customers.
KOLON PLASTICS creates a better world based on the DNA of KOLON Group, the dream of becoming 'Lifestyle Innovator'.
KOLON PLASTICS is the only engineering plastics specialist in Korea, producing and selling the highest-quality Base and Compound products in the world.
From POM, PA, PBT to Composite, we are building a wide range of product portfolios around the world to 90 countries, including Europe, America, and Japan.
KOLON PLASTICS, through the world's best technology and sustainable research and development, will present differentiated value to customers and continues to strengthen its global competitiveness through expansion of overseas markets.
ESTABLISHMENTMarch 15, 1996
HEAD OFFICEGimcheon, Korea
SALES205 bil. USD (2016)
PRODUCTS8 Brands, 400 Grades
7
KOCETAL® (POM)
KOCETAL® is a copolymer type polyacetal resin with excellent anti-friction / anti-wear, chemical resistance, heat-resisting sta-bility, precise dimensions and molding abilities.
It is used for various purposes in the fields such as automobiles, office equipment, and household items.
CHARACTERISTIC OF KOCETAL®
MECHANICAL PROPERTYKOCETAL® is highly crystalline and has excellent balance of mechanical toughness and rigidity. It is also resistant to fatigue, creep, and has good wear and abrasion resistance by its self-lubricating property. However, due to a glass transition temperature about -60°C, the change in mechanical properties with temperature is relatively large.
THERMAL STABILITYKOCETAL® is more thermally stable than homopolymers. Since the crystalline resin, KOCETAL®, does not cause significant deformation even over the thermal deflection temperature. By the addition of various stabilizers, the thermal properties of the KOCETAL® can be improved.
CHEMICAL RESISTANCEKOCETAL® is resistant to general organic solvents due to its high crystallinity. Although it has excellent chemical resistance to gasoline and lubricating oil, adding acidic additives to improve performance may make insufficient chemical resistance.
WEATHER RESISTANCEPolyacetal resins are not good resistance to UV rays, but KOCETAL® can be reformed by prescribing light stabilizers and UV rays absorbers.
KOCETAL®
Polyoxymethylene (POM)
98
LUMBAR SUPPORT (K300EW, K300LO, UR302LO)
Injection moldability Dimensional stability
WINDOW MOTOR GEAR (K100HS)
Friction resistance Creep resistance Dimensional stability
DOOR LATCH HOUSING (K300EWBBK)
Dimensional stability Wear resistance Good strength
FUEL PUMP ASSEMBLY (K100HS, K300EW)
Creep resistance Dimensional stability
SANITARY PART (K300)
Good strength Chemical resistance Hydrolysis resistance
GEAR (LF301, K300, K300EW, GF305)
Low friction Creep resistance Dimensional stability
EXTRUDED ROD (K100)
Heat stability Control of crystallizaition Dimensional stability
FASTENER (UR304)
Optimized toughness and strength
Excellent color stability
SPEAKER GRILL (WR701LO)
Excellent UV- resistance
Low Formaldehyde gas emission
Good flowability
BUMPER BRACKET (K300EWBBK, K300HBK)
Excellent dimensional stability
Optimized toughness and strength
Good chemical resistance
SEAT BELT BUTTON (K300HRD)
Weather resistance Dimensional stability
APPLICATIONS
1110
OVERVIEW PRODUCT PORTFOLIO
CATEGORY GRADE NAME DESCRIPTION
GENERAL
K100 Unreinforced Grade (MI: 3)
K300 Unreinforced Grade (MI: 9)
K300EW Unreinforced, Slight Ductility Grade (MI:9)
K500 Unreinforced Grade (MI: 14)
K700 Unreinforced Grade (MI: 27)
K900 Unreinforced Grade (MI: 45)
HIGH STRENGTHK100HS High Strength, Unreinforced Grade (MI: 3)
K500HS High Strength, Unreinforced Grade (MI: 14)
LOW VOC
K100LO Low VOC, Unreinforced Grade (MI: 3)
K300LO Low VOC, Unreinforced Grade (MI: 9)
K700LO Low VOC, Unreinforced Grade (MI: 27)
K100HSLO Low VOC, High Strength Grade
K500HSLO Low VOC, High Strength Grade
UR302LO Low VOC, Impact Modified Grade
UR304LO Low VOC, Impact Modified Grade
WR301LO Low VOC, Impact Modified Grade (MI: 9)
WR701LO Low VOC, Impact Modified Grade (MI: 27)
WEATHER RESISTANT
WR301 Light Resistant Grade (MI: 9)
WR701 Light Resistant Grade (MI: 27)
WR303 Outdoor Weather Resistant Grade (MI: 9)
IMPACT MODIFIED
UR302 Impact Modified Grade with TPU
UR304 Impact Modified Grade with TPU
EL302 Impact Modified Grade with TPEE
EL304 Impact Modified Grade with TPEE
REINFORCED
GF305 Glass Fiber 25% Reinforced Grade
GF702 Glass Fiber 10% Reinforced Grade
GF705 Glass Fiber 25% Reinforced Grade
GB705 Glass Bead 25% Reinforced Grade
TC704 Talcum 20% Reinforced Gradee
WH704 Whisker 20% Reinforced Grade
LOW WEAR &
FRICTION
MS301 Low wear, Low Friction Grade with MoS2
SO301 Low wear, Low Friction Grade with Silicon Oil
TF302 Low wear, Low Friction Grade with PTFE 10%
TF304 Low wear, Low Friction Grade with PTFE 20%
LF301 Low wear, Low Friction Grade
LF302 Low wear, Low Friction Grade
LW301 Low wear, Low Friction Grade
LF701 High flow, Low Wear, Low Friction Grade
LW701 High flow, Low Wear, Low Friction Grade
SW501HS Low wear, Low Friction Grade
CONDUCTIVE
CB301 Conductive Grade with Carbon Black
CF702 Conductive, Reinforced Grade with Carbon Fiber
CN301C3 Conductive Grade with Carbon Nano Tube
SPECIAL
DS500HS Hot Diesel Resistant Grade, Acid Resistant Grade
K300PW General Grade for Applications Where Drinking Water Approval is Prerequisite.
VT702 Anti-Static Grade
NOMENCLATURE
The name of KOCETAL® commercial products generally follows the scheme below:
CONTENT
1 5%2 10%3 15%4 20%5 25%6 30%8 40%
CHARACTERISTICS 2
EW Slight ductility grade than standardHS High strength gradeLO Low odor and VOC’s gradePW Potable water
COLOR
BE BeigeBK Pre colored blackBBK Salt and pepper type blackBL BlueBN BrownDG Dark grayGR, GY GrayRD RedWT WhiteYE YellowNone Natural
CHARACTERISTICS 1
K Standard gradeCB Conductive grade with special carbon blackCF Conductive grade with carbon fiberDS Hot diesel resistance improved gradeEL Impact modified grade GB Glass filled gradeGF Highly stiff grade with glass fiberLF Low friction grade with special polymerLW Low wear grade with special polymerMS Low friction grade with MoS2
SO Low friction grade with Silicon OilTC Talcum filled grade for dimensional stabilityTF Low friction grade with PTFEUR Impact modified gradeVT Anti-static gradeWH Whisker filled grade for low friction and high stiffnessWR Weather resistance improved grade
VISCOSITY
10 MI = 3 (High viscosity)30 MI = 9 (Medium viscosity)50 MI = 14 (Medium viscosity)70 MI = 27 (Low viscosity)90 MI = 45 (Very low viscosity)
CHARACTERISTICS 1 VISCOSITY CONTENT CHARACTERISTICS 2 COLOR
K - 3 0 0 L O B K
1312
THE PROPERTIES OF KOCETAL®
KOCETAL® FOR AUTOMOTIVE
KOCETAL® is stable in a wide temperature range from -40°C to 100°C.
KOCETAL® is suitable for auto-motive interiors since it has excellent chemical resistance to washers, antifreeze, gasoline, diesel and so on.
KOCETAL® FOR E&E, INDUSTRIAL APPLICATIONS
KOCETAL® is widely used for high - per formance par ts for electric / electronic applications requiring high precision and functionality.
KOCETAL®, produced by cry-stallization control technology, has fast crystallization, dense and uniform crystal structure. It implements excellent abrasion resistance and high mechanical strength suitable for various office equipment and electric / electronic parts
For extrusion applications, K100, which has a slower crystallization rate, is widely used and K300 is the most commonly used for general injection molding.
K100HS is crystallized quickly and at the same time it produces small and constant crystals which show excel lent wear resistance and high mechanical strength. It is a material suitable for high-load gears and driven parts.
KOCETAL® is suitable for auto-motive interiors since it has super ior color stabi l i t y and weather resistance.
It also has low formaldehyde emission over a wide range of molding temperature.
CHEMICAL RESISTANCE OF KOCETAL® K300
DIESEL IMMERSION TEST OF KOCETAL® K300
WEAR RESISTANCE
DEGREE OF CRYSTALLIZATION BY GRADES
[ unit: ppm ]
CHEMICALS WEIGHT LOSS DIMENSION CHANGE
CHANGE OF TENSILE STRENGTH
GASOLINE 0.45 0.15 1.54
KEROSENE 0.19 0.02 4.62
LIGHT OIL 0.10 0.01 3.08
ENGINE OIL - 0.50 - 0.06 4.62
BREAK OIL 0.87 0.27 0.00
GLASS WASHING ANENT 0.74 0.20 3.08
[ Condition: 23°C, 1 year-immersion, unit % ]
TEST CONDITION K300LOW ODOR MATERIAL
K300LO WR301LO
65°C x 2 hours < 1.45 < 0.04 No detection
80°C x 2 hours < 1.45 < 0.07 < 0.04
100°C x 2 hours < 1.45 < 0.18 < 0.18
240°C x 15 minutes - < 60.0 < 90.0
VDA 275 (60°C x 3 hours) < 8.70 < 0.70 < 0.50
REMARK STD STD UV resistance
[ Condition: 120°C, 520hr ]
DS500HS K300
Rete
ntio
n (%
)
120
100
80
60
40
20
0Tensile strength Elongation Impact strength
[ Condition: Pressure - 1.5kg/cm2, Speed - 30cm/s (Same body) ]
Specific wear Specific wear (Counter part) Coefficient of dynamic friction
Spec
ific
wea
r (m
3 /kg
km)
320
240
160
80
0Competitor LF301 K300
- K100- K300- K100HS
Crys
talli
zatio
n ha
lf tim
e (m
in.)
40
30
20
10
0
Isothermal temperature (°C)
149 150 151 152 153 154 155
1514
MECHANICAL PROPERTIES
KOCETAL® is a material that has better mechanical strength and durability than PA and PBT. In addition, it has excellent impact resistance, heat resistance and weather resistance.
CREEP RESISTANCE
KOCETAL® is an excellent creep resistant material. It is widely used for various types of valves, including buckles.
FATIGUE RESISTANCE
KOCETAL® has excellent elastic recovery and fatigue resistant properties. These properties are used in materials such as zippers and tape reels.
WEAR RESISTANCE, LOW FRICTION
KOCETAL® is a self-lubricating material with exceptional anti-friction / wear characteristics compared to o the r p l as t i c materials.
DIMENSIONAL STABILITY
KOCETAL ® reaches a stable condition after 24 hours at room temperature af ter injection, without further deformation.
Due to low water absorption and dimensional stability, it is suitable as a material for high-precision parts due to small change in dimensions.
ELECTRICAL PROPERTY
With i ts super ior e lectr ica l p r o p e r t i e s i n c l u d i n g h i g h insulation, Kocetal is featured w i t h l o w t e m p e r a t u r e dependency on res is t i v i t y, electric permittivity, dissipation f a c t o r a n d t h e D i e l e c t r i c Strength.
HOT WATER RESISTANCE
KOCE TAL ® can be adopted f o r t h e p r o d u c t s u s e d i n h igh temperature / humid i t y environments as there is less d i m e n s i o n a l a n d m a te r i a l property change in hot water immersion tests, compared to acetal homopolymer, nylon or PBT resin.
THE PROPERTIES OF KOCETAL®
CREEP RESISTANCE OF KOCETAL® K300
[ Condition: 80°C in air ]
Stra
in (%
)
12
10
8
6
4
2
0
Holding time (hr)
10-1 100 101 102 103
- 200kg/cm2 - 150kg/cm2 - 100kg/cm2 - 50kg/cm2
[ Condition: 23°C in air ]
Stra
in (%
)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Holding time (hr)
100 101 102 103 104
- 200kg/cm2 - 150kg/cm2 - 100kg/cm2 - 50kg/cm2
WEAR RESISTANCE, LOW FRICTION
[ Condition: Pressure 0.6kg/cm2, Speed: 15cm/sec, Same body ]
Coef
ficie
nt o
f dyn
amic
fric
tion
0.8
0.6
0.4
0.2
0K300 MS301 PBT ABSPC
0.270.21
0.47
0.65
0.43
Coefficient of dynamic frictioncompared to other plastics
Coef
ficie
nt o
f dyn
amic
fric
tion
0.4
0.2
0K300
vsK300
K300vs
GF705
K300vs
PA6
K300vs
PA66
K300vs
PBT
K300vs
Steel
0.27
0.32
0.230.20
0.13
0.23
Coefficient of dynamic ofK300 against other plastics
ELECTRICAL PROPERTY
Diss
ipat
ion
fact
or
[ Test material: K300 ]
0.05
0.04
0.03
0.02
0.01
0
Temperature (°C)
-50 0 50 150100
1KHz
MHz
Dissipation factorby temperature
HOT WATER RESISTANCE
[ Immersion temp: 100°C ]
- Homo-POM - PBT - PA6 - PA66 - Kocetal K300
Rete
nsio
n of
tens
ile s
tren
gth
(%)
140
120
100
80
60
40
20
0
Immersion time (hr)
600100 200 300 400 500
Retension of tensile strengthby hot water immersion
DIMENSIONAL STABILITY
Mol
d sh
rinka
ge (%
)
3
2
1
0
[ Product: 80 x 80 x 3mm(plate), Mold temp: 80°C ]
Cylinder temp. (°C)
Kocetal K300(190)
PBT(240)
PA6(240)
PA66(250)
PC(250)
ABS(240)
Mold shrinkage compared toother plastics
[ Test material: K300 ]
Stra
in (%
)
0.6
0.5
0.4
0.3
0.2
0.1
00.5 1.0 2.01.5
Water absorption (%)
Change of dimensionby water absorption
FATIGUE RESISTANCE
Heat
dis
tort
ion
tem
pera
ture
(°C)
250
200
150
100
50
0Kocetal K300 PA6 PA66 PBT
4.6kg/cm2 18.6kg/cm2
Heat distortion temp. compared to other plastics
- PC - PA6 - K300 - Homo-POM
Fatig
ue s
tren
gth
(kg/
cm2)
800
500
400
200
0
Number of cycles to failure
1.0 x 105 1.0 x 106 1.0 x 107
1716
THE PROPERTIES OF KOCETAL®
THERMAL STABILITY
K O C E TA L ® h a s i m p r o v e d therma l s t ab i l i t y, which is the weakness of most POM materials. As a result, it brings the following features
env i ronment due to less formaldehyde emission
gement cost due to mold contaminant reduction and q u a l i t y i m p r o v e m e n t o f molding products
in in ject ion equipment or decrease in physical properties and discoloration even in the case of the use of pulverizing agent.
applications of parts exposed to external environment by improvement of weather resistance and ultrav io let resistance.
WEATHER RESISTANCE
When products made f rom conventional acetal resins are left outdoor for 6 months, aging will cause discoloration, surface cracking and degradation. In env i ronments where there i s p r o l o n g e d ex p o s u re to sunlight and ultraviolet rays, we recommend the use of UV resistant grades. However if exposure is not excessive it is possible to use standard grades.
CHEMICAL RESISTANCE
KOCETAL® is highly resistant to organic compounds, oils, fats and synthetic detergents.
CHEMICAL RESISTANCE
KOCETAL Homo-POM PBT PA PPO PC
SOFT ACID O O
STRONG ACID X X X O
SOFT ALKALI O O O O O
STRONG ALKALI O X X O O X
AROMATIC O O O X X
HALOGEN O X X
ALCOHOL O
ESTER O O O X X
KETONE O O O O O X
OIL O O O O
: Excellent O : Usable : Usable with caution X : Not usable
Note: KOLON PLASTICS has prepared this report based on the data obtained up to the time of writing. The figures in all tables are representative values, not quality assurance values. The figures in the table can not be used as basic data for semi-finished products and finished product designs. As product quality improves, figures in the table may change without notice.
WEATHER RESISTANCE
- Fade-o-meter, 83°C, withsout rain- Weather-o-meter, 83°C, withsout rain
Yello
w in
dex
100
80
60
40
20
0
Time (hr)
200 400 600 800 1,000 1,200
KocetalK300
KocetalWR301
Rete
nsio
n of
tens
ile s
tren
gth
(%)
140
120
100
80
60
40
20
0
[ Condition: 83°C, without rain ]
Time (hr)
200 400 600 800 1,000 1,200
- Homo-POM - PA6 - Kocetal K300 - Kocetal WR301
THERMAL STABILITY
[ Air flow: 300m2/min, Condition: 240°C on Air ]
- Homo-POM - Other co-POM - Kocetal K300
Rate
of r
emai
ning
wei
gh (%
)
100
80
60
40
20
0
Heating time (hr)
20 40 06 80 100 120
TGA thermogram
-12
-13
-14
-15
-16
-17
Cylinder temperature (°C)
240200 210 220 230
Yello
w in
dex
0-2-4-6-8
-10-12-14-16
Holding time (min)
1000 20 40 8060
Yello
w in
dex
- Other co-POM - Kocetal K300
Wei
ght l
oss
(%)
2
1.6
1.2
0.8
0.4
0
Aging temperature
200°C 220°C 240°C
[ Condition: aging for 30mins. ]
1918
INJECTION CONDITIONS & HANDLING PRECAUTIONS
PRE-DRYING
KO C E TA L ® i s a p o l yacet a l copolymer and its absorption rate is low.It can be used without pre -liminary drying even after left in the open state, and there is no fear of decomposition by moisture absorption. However, we recommend pre - d r y ing i f the re i s a p oss ib i l i t y o f appearance defects such as silver tones.
DRYING CONDITION
GENERAL CASE
Heated-air drying at 80°C x 3 hours or more
IN CASE OF MOLDING DEPOSIT
Heated-air drying at 100°C x 3 hours or more
PYROLYSIS AT HIGH TEMPERATURE
Keeping KOCETAL® resin at a temperature higher than 250°C or staying in the cylinder for more than 230°C for a long time (more than 30 minutes) may cause generation of formaldehyde gas and discoloration of resin due to thermal decomposition of resin.
PYROLYSIS PREVENTION GUIDE
molten resin below 230°C.
stopped for a long time, purge the molten resin in the cylinder then stop the operation.
and delayed, lower the cylin-der temperature to the level of 165°C.
rials avoid moisture absorption and contamination.
INJECTION MOLDING
The optimal molding conditions o f K O C E T A L ® s h o u l d b e determined in consideration of the flow characteristics of the resin, molding shrinkage, d i m e n s i o n a l a c c u r a c y , and qual i t y stab i l i t y of the molded product, uniformity, and economic ef ficiency. In particular, it is necessary to rev iew al l these condit ions before molding.
T he in jec t ion tempera tu re should be set slightly higher than the theoretical KOCETAL® melting point of 165°C and it is recommended to use below 220°C in order to suppress the generation of formaldehyde gas due to pyrolysis.
I n g e n e r a l , m o l d i n g s t h a t require thin or multiple cavities and/or dimensional accuracy should be injected quickly, and thicker products that may cause p rob lems such as bubb les should be injected slowly. The cooling time should be set not to appear deformation or pin marks when the molded product is taken out.
USE OF RECYCLED MATERIALS
KOCETAL® can be mixed with recycled materials. However, in order to obtain a high-quality molded product, be aware of the following points.
5 times, there is no big change in physical pro-perties.
tends to decrease slightly, and there is not much change in fluidity.
determined by the color change.
recycled materials.
plasticized and may cause defective molding.
CHANGE MATERIAL
Purging the cylinder using PP (polypropylene) resin or PE (polyethylene) resin. In particular, when molding resins with different molding temperatures, it is recommended that the cylinder be cleaned.
DISCONTINUE THE OPERATION
If you stop the operation for a long time (more than 1 hour), you should purge the cylinder and set the cylinder temperature below the melting point (165°C).
CONDITIONS OF INJECTION MOLDING
INJECTION MOLDING PARAMETERS GENERAL POM LOW VOC POM REINFORCED POM
Recommeded Moisture Contents (%) 0.1
Melting Temperature (°C) 165 ± 5 165 ± 5 165 ± 5
Cylinder Temperature (°C)
Nozzle 185 ~ 195 180 ~ 190 190 ~ 190
Front 180 ~ 200 180 ~ 195 185 ~ 200
Middle 175 ~ 190 175 ~ 190 180 ~ 195
Rear 165 ~ 175 165 ~ 175 165 ~ 180
Mold Temperature (°C) 60 ~ 90 60 ~ 90 70 ~ 90
Holding Pressure (%) 1/3 ~ 2/3 of max. injection pressure
Cushion (mm) 5 ~ 10