Plastic Omnexus helps Korea Fire Fighting Corporation

Plastic Omnexus helps Korea Fire Fighting Corporation

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My OpenID Lists doubles Mar 9, '08 6:09 AM

[Mar. 9th, 2008|06:50 pm]

omnexus

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My OpenID Lists doubles

Mar 9, '08 6:09 AM
for everyone

http://openid.daum.net/success

Tags: my, openid, claimid, nude, fire, extinguisher, success, polycarbonate, 누드, 소화기, 충약, 사기, 대한, 소방, 공사

Polycarbonated Automobiles and Nude Fire Extinguishers as well as sexy ladies

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My OpenIDs Doubled and EVA in Omnexus

[Mar. 9th, 2008|05:25 pm]

omnexus

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참고 하세요

EVA - Ethylene Vinyl Acetate
Cost Index*: 1


	Strength and Limitations		Applications		Properties Profiles		Processability

Strengths	Limitations
Highly flexible , even at low temperatures (-25°C) Higly compatible with a lot of elastomers, TP and other materials (SBr, EPDM, TPE, PE, PVC, asphaltum ...) Better tear resistance than LDPE Excellent resistance to environmental stress cracking FDA compliant Good UV and ozone resistance	Poor heat resistance Reduced barrier properties compared to LDPE Attacked by polar solvents, hydrocarbons, oxydants and strong acids Reduced creep resistance, compared to LDPE

Applications

Key performances

Packaging
Stretch film for shrink wrapping	High flexiblity Good tear resistance FDA compliant
Sealable layer in multilayer food packaging	Good sealability Flexibility FDA compliant
Personal safety/ Protection equipment
Flexible gloves	High flexibility Good resistance to rupture Good chemical resistance
Automotive
Sound proofing	Good sound absorption Good adhesion with many substrates
Footwear
Soles (EVA foam)	Good impact absorption Good adhesion with many substrates
Wiring & Cables
Wire coating	Good adhesion with many substrates Highly flexible

Property

Value

Dimensional stability
Coefficient of linear thermal expansion	16 - 20 10^-5 °C-1
H2O absorption 24 hours	0.005 - 0.13 %
Shrinkage	0.4 - 3.5 %
Electrical performances
Dielectric constant	2.5 - 3
Dielectric rigidity	27 - 28 kv/mm
Dissipation factor	130 - 1000 10^-4
Volume resistivity	15 10^X Ohm.cm
Fire performances
Fire resistance (LOI)	18 - 19 %
Flammability UL94	HB
Mechanical properties
Elongation at break	200 - 990 %
Flexibility (Flexural Modulus)	0.007 - 0.1 GPa
Hardness Rockwell M	1
Hardness Shore D	15 - 45
Stiffness (Flexural Modulus)	0.007 - 0.1 GPa
Strength at break (tensile)	7 - 30 MPa
Strength at yield (tensile)	7 < b>- 40 MPa
Toughness (Notched Izod impact at room temperature)	999 J/m
Young modulus	0.01 - 0.2 GPa
Optical properties
Gloss	17 - 123 %
Haze	5.1 %
Transparency (% visible light transmission)	80 %
Physical properties
Density	0.92 - 0.94 g/cm^3
Radiation resistance
Gamma radiation resistance	Fair
UV light resistance	Poor
Service temperature
Ductile/fragile temperature	-69 °C
HDT @0.46 Mpa (67 psi)	37 °C
HDT @1.8 Mpa (261 psi)	23 °C
Max continuous Service temperature	45 - 70 °C
Min continuous service temperature	-60 °C
Others
Sterilization resistance (Repeated)	Poor

Processability

General information

These resins are not hygroscopic and may be used as received without need for drying.
At temperatures above 220ºC, EVA resins can evolve toxic fumes.

Injection molding

Experience has shown screws normally used for injection molding of low density polyethylene to be satisfactory.
Melt temperature : 150-200°C
Mold temperature : 15-40ºC

Extrusion

A three-zone screw with a total L/D ratio of at least 20 is recommended.
Melt temperature is, generally, in the overall range of 95-205ºC .
The melt temperature depends upon the melt index of the resin, the % vinyl acetate and the part configuration.

*Cost Index

1.  Less than 1.6 €/kg or 0.9 $/lbs
2.  1.6 - 4 €/kg or 0.9 to 2.2 $/lbs
3.  3 to 11 €/kg or 1.6-6 $/lbs
4.  10 to 25 €/kg or 5.5 to 13.6 $/lbs
5.  More than 25 €/kg or 13.6$/lbs

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