skypet-br - smpcorps.comsmpcorps.com/products/files/0ad6a_skypet br 8040.pdf · • skypet-br is...
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SKYPET-BR (Introduction & Application)
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SKYPET- BR
• SKYPET-BR, a highly functional low-crystallisation co-polyester
polymer, is a new grade with wide area of applications in both
injection stretch-blow moulding and sheet extrusion. Its features
include excellent transparency and stretch-ability.
• SKYPET-BR is not easily crystallized, in contrast with normal PET.
Therefore, heavy gauge extruded sheet over 3~6mm or thick-walled
preform over 5~8mm can be manufactured without damaging
transparency.
• SKYPET-BR is easier for blow-moulding and thermoforming to
complex container shapes of high drawing ratio in moderate
temperature.
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• CHDM (Cyclohexanedimethanol) modified PET
• Target market : high valuable containers and thick sheets (4~6mm)
• Excellent Transparency
• Easy and convenient 2nd Fabrication (vs. PC and Routine PET)
- Blowing, Thermoforming
• High Gloss
• Environment Friendly
• Excellent Chemical Resistance
• Recyclable
Features of SKYPET- BR
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Polyester Characteristics
A-PET = Amorphous PET, which is mainly used in thin sheet and film applications.
PCTG = PCT (Polycyclohexane dimethyl terephthalate) modified by glycol (CHDM).
Tg (deg.C)
HDT (deg.C) @0.46kgf
Slow Crystallization Amorphous Superior Impact Strength
Better Thermal Resistance
PET-G
EG 100% CHDM 100% 50%
A-PET PCT-G PCT
78 80 85 86-87
68 70 75 77
BR
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Comparisons with PET
Propertiy
Process
temperature
Crystallization
rate
Melting temperature
(Tm)
Glass transition
temperature (Tg)
SKYPET-BR SKYPET-BL (Normal PET)
SKYPET-BB (Homo PET)
Low Middle
Very slow slow
236 245
78 78
unit
-
-
℃
℃
Slower
cryst. rate Lower
process temp. +
make it easier
to get more
• thickness
• transparency
• complexity
Possible Max.
Sheet Thickness -
High
fast
254
80
5mm 2.5mm 1.5mm
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Item Test
Method Unit BR GP PMMA
Impact
PMMA PC
Specific Gravity ASTM D792 - 1.33 1.19 1.16 1.20
Mould Shrinkage ASTM D955 % 0.3~0.5 0.2~0.4 0.4~0.8 0.3~0.6
Rockwell Hardness ASTM D785 R-Scale 117 121 118 121
Water Absorption ASTM D570 % 0.3 0.4 0.4 0.2
Tensile Strength @ Yield ASTM D638 Mpa 60 64 49 61
Tensile Elongation @ Break ASTM D638 Mpa 120 3 30 125
Flexural Strength ASTM D790 Mpa 83 93 88 96
Izod Impact Strength (notched) ASTM D256 J/m 40 17 36 784
Heat Distortion Temperature ASTM D648 ℃ 70 77 76 140
Total Transmittance ASTM D1003 % 90 92 91 88
Properties of BR
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: Slight change or No change of mechanical property
: Discoloring, Whitening, Swelling
Chemical Resistance
Type
Inorganic
Acid
Organic
Acids
Alcohols
Inorganic
Alkalis
Tested
Hydrochloric acid
Nitric acid
Sulfuric acid
Acetic acid
Citric acid
Ethyl alcohol Methyl alcohol
Ammonia hydroxide
Sodium hydroxide
BR Time
(days)
365
365
365
365
Conc.
(%)
10
10
40
3
365
365
5
10
365
30
365
10
10
10
30
365
365
50
50
100
PC
x
x
x
x
Acrylic
x
x
x
x
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Chemical Resistance
Type Tested BR Time
(days)
365
30
365
Conc.
(%)
100
100
365
5
365
365
365
365
100
100
100
100
Aromatic
Hydro-
carbons
Benzene
Toluene
Phenols
Other
Chemicals
n-Hexane
Olive Oil
Gasoline
Motor oil
PC
x
x
x
Acrylic
x x
: Slight change or No change of mechanical property
: Discoloring, Whitening, Swelling
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Grade: BR8040
Product : Sheet for Canopy
Chemical and Fire Resistance
UV Protector on Extruding (option)
Application
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Grade: BR8040
Product : Sheet for Fence
Chemical Resistance
UV Protector on Extruding (option)
Application
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Grade: BR8040
Product : Sheet for Shelves
Easy Bending & Drilling
Fire Resistance
Application
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Grade: BR8040
Product : Sheet for Glazing
UV Protector on Extruding
(option)
Application
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Grade: BR8040
Product : Sheet for Thermoformed Billboards
Application
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Grade: BR8040
Product : Sheet for Thermoformed Signboards of Stores
Process: Press-Thermoforming
UV Protection (option)
Application
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Grade: BR8040
Product : Sheet for Covers of Machinery
Chemical Resistance and Impact Strength
Fire Resistance
Application
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Grade: BR8040
Product : Sheet for Clean Room Wall of Electronic factory
Clarity, Impact Strength & Fire Resistance
Application
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Grade: BR8040
Product : 5 Gallon Bottles & Thick Cosmetics Bottles
Easy Moulding & Chemicals Resistance
Application
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Grade: BR8040
Product : Sheet for Thermoformed
Items of High Draw Ratio
Sheet Thickness: 1.2mm
Easy Moulding
Cold Drink of McDonald’s,
Pizza Hot etc.
Application
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Grade: BR8040
Product : Thick Injected Items
Gloss and Chemical Resistance
Application
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Grade: BR8040
Product : Clear Injected Items
Chemical Resistance
Application
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Grade: BRV
Product : Light Weight Items
Chemical Resistance
Improved Flowability
Application