Ethylene Vinyl Acetate for customized solutions

2

LG Chem.

has developed family

of high content

vinyl acetate EVA

copolymers,

ranging up to 40%.

The EVA copolymers of LG Chem. are

thermoplastic materials produced by the

copolymerization of ethylene with vinyl acetate

comonomer. The copolymer has random

branched structure as illustrated in Figure 1.

Physical PropertiesThe properties of EVA copolymers are dependent

on vinyl acetate incorporation, molecular weight

and molecular weight distribution.

The effects of the vinyl acetate content to

copolymer properties are shown in Figure 2.

The influences of Melt Index on some important

properties are also shown in Figure 3.

Mechanical PropertiesAs vinyl acetate content increases, the crystallinity

decreases and its dependent properties such as

tensile strength, hardness are reduced.

The Melt Index affects certain mechanical

properties, especially for processability.

On the contrary to this, the rubbery properties

like elasticity are increased.

Thermal PropertiesMelt temperature declines almost linearly with

increasing vinyl acetate content.(Figure 4)

But the impact strength and sealability of

low temp. are improved with increase in

vinyl acetate content.

Compound PropertiesThe EVA copolymers are miscible in a wide

range of ratios with various polyolefin resins.

The addition of an EVA copolymer to an

elastomer, improves properties such as stiffness,

tear resistance and solvent resistance. The EVA

copolymers also has good compatibility with

various kinds of fillers and pigments, so they can

be used as a base resin at functional compounds.

Fig.1 Formation of an EVA Copolymer

Fig.2 Vinyl Acetate and product properties

Fig.3 Melt Index and product properties

Fig.4 Melt Temperature vs Vinyl Acetate Addition

X = Vinyl Acetate

Increase in VA Incorporation

Decrease in Melt Index

impro

ves

impro

ves

Mel

t Tem

p. (°

C)

increases

decreases

FlexibilityClaritySealabilityAdhesionCompatibility

Blocking Tendency

Tensile StrengthImpact StrengthTear Strength

processability

% Vinyl Acetate(For resins with melt index less than 10)

0 10 20 30 40 50 60

120

100

80

60

40

20

0

3

Product Applications

Photovoltaic Encapsulant (PVEN)The EVA encapsulants can be used as adhesion layers between glass and backsheet with cells inside the photovoltaic module. It delivers decades of service life with good transparency and adhesion property.

Extrusion CoatingThe EVA copolymers can be extrusion-coated onto various substrates. The EVA coating will offer excellent sealability, clarity and good adhesion to substrates such as OPP, Nylon and PET films. The extrusion-coated films are generally applied for

various thermal laminating films.

Hot Melt AdhesiveThe EVA copolymers can be used as base polymer in the HMA product to control the viscosity, cohesive & adhesive strength and flexibility. High vinyl acetate content improves adhesion & flexibility and the speed of operation gets faster with

higher MI. The main applications are packaging, wood veneering

and bookbinding.

Wire and CableThe use of EVA copolymers in crosslinked electrical applications can improve processability, the acceptance of higher filler loading, and heat resistance. The blends with applications in wire and cable industry are semi-conductive compounds, black jacket and hologen-free flame retardanat(HFFR) formulations

after blending with Polyolefins.

FoamingThe EVA foam can offer the elastic nature with softness and resilience, that mainly depends on the high vinyl acetate contents. Ease of crosslinking also rises with increasing vinyl acetate content. The sole of athletic shoes, sponge shoes and many kinds of cushions are the major application for EVA foaming.

4

EVA Copolymer Grade

Application Grade Vinyl Acetate, % Melt Index

Photovoltaic Encapsulant (PVEN)

EP28015* 28 15

EP28025* 28 25

Extrusion Coating

EL18018 18 18

EL18025 18 25

Hot Melt Adhesive (HMA)

EA19150 19 150

EA19400 19 400

EA28150 28 150

EA28400 28 400

Wire and Cable (W&C)

EC15006 15 6

EC33018 33 18

Foaming

ES18002 18 2.5

ES28002 28 2.5

ES28005* 28 5

Film EF18002 18 2

* Wire & Cable compound / Safety glass film / Hot melt adhesive etc.

5

EP28015 | EP28025Copolymer of Ethylene Vinyl Acetate

General

Additive • No Additive

Application • PhotoVoltaic Encapsulant Sheet

• Hot Melt Adhesive

• Wire & Cable Compound

Properties

Item Test Based on Typical Value

EP28015 EP28025

Density @ 23°C ASTM D1505 0.950 g/cm3 0.951 g/cm3

Melt Index, 2.16 kg ASTM D1238 15 g/10 min 25 g/10 min

Vinyl Acetate Content LG Method 28 wt% 28 wt%

Melting Point, DSC LG Method 71 °C 69 °C

Tensile Strength @ Break ASTM D638 110 kg/cm2 95 kg/cm2

Elongation @ Break ASTM D638 900 % 850 %

Hardness, Shore A ASTM D2240 78 76

Softening Point, Vicat ASTM D1525 46 °C 45 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

Performance

• Uniform VA content and MI

• Excellent optical property

• Low gel level and contamination free

• Good adhesion property in the solar module

Photovoltaic Encapsulant

6

Extrusion Coating

EL18018 | EL18025Copolymer of Ethylene Vinyl Acetate

General

Additive • Anti-Oxidant

Application • Extrusion Coating

Properties

Item Test Based on Typical Value

EL18018 EL18025

Density @ 23°C ASTM D1505 0.938 g/cm3 0.939 g/cm3

Melt Index, 2.16 kg ASTM D1238 18 g/10 min 25 g/10 min

Vinyl Acetate Content LG Method 18 wt% 18 wt%

Melting Point, DSC LG Method 85 °C 84 °C

Tensile Strength @ Break ASTM D638 140 kg/cm2 135 kg/cm2

Elongation @ Break ASTM D638 850 % 850 %

Hardness, Shore A ASTM D2240 82 81

Softening Point, Vicat ASTM D1525 61 °C 60 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

Performance

• Uniform VA content and MI

• Low gel level and strict contaminant control

• Excellent transparency

• Stable high speed processability with good neck in

• Using coated product with LDPE, mLLDPE, POE(Polyolefi n elastomer)

7

EA19150 | EA19400 | EA28150 | EA28400Copolymer of Ethylene Vinyl Acetate

General

Additive • Anti-Oxidant

• Anti-Agglomerate

Application • Hot Melt Adhesive

Properties

Item Test Based on Typical Value

EA19150 EA19400 EA28150 EA28400

Density @ 23°C ASTM D1505 0.940 g/cm3 0.939 g/cm3 0.946 g/cm3 0.945 g/cm3

Melt Index, 2.16 kg ASTM D1238 150 g/10 min 400 g/10 min 150 g/10 min 400 g/10 min

Vinyl Acetate Content LG Method 19 wt% 19 wt% 28 wt% 28 wt%

Melting Point, DSC LG Method 80 °C 78 °C 70 °C 68 °C

Tensile Strength @ Break ASTM D638 70 kg/cm2 55 kg/cm2 40 kg/cm2 30k g/cm2

Elongation @ Break ASTM D638 800 % 850 % 900 % 900 %

Hardness, Shore A ASTM D2240 88 85 74 68

Softening Point, Vicat ASTM D1525 <40 °C <40 °C <40 °C <40 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

Performance

• Uniform VA content and MI

• Products line with various VA contents and MI

• Excellent compatibility with other raw materials of HMA

• Good control organoleptic property

Hot Melt Adhesive

8

Wire and Cable

EC15006 | EC33018Copolymer of Ethylene Vinyl Acetate

General

Additive • No Additive

Application • Wire and Cable Compound

Properties

Item Test Based on Typical Value

EC15006 EC33018

Density @ 23°C ASTM D1505 0.936 g/cm3 0.960 g/cm3

Melt Index, 2.16 kg ASTM D1238 6 g/10 min 18 g/10 min

Vinyl Acetate Content LG Method 15 wt% 33 wt%

Melting Point, DSC LG Method 89 °C 62 °C

Tensile Strength @ Break ASTM D638 160 kg/cm2 100 kg/cm2

Elongation @ Break ASTM D638 800 % 900 %

Hardness, Shore A ASTM D2240 92 64

Softening Point, Vicat ASTM D1525 65 °C <40 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

Performance

• Uniform VA content and MI

• Excellent surface finish

• High filler loading (carbon black, flame retardant agent)

• Contaminants free

• Excellent electrical & mechanical property

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ES18002 | ES28002 | ES28005Copolymer of Ethylene Vinyl Acetate

General

Additive • Anti-Oxidant

Application • Foam Compound

• Safety Glass

• Waterproof Sheet etc.

Properties

Item Test Based on Typical Value

ES18002 ES28002 ES28005*

Density @ 23°C ASTM D1505 0.939 g/cm3 0.950 g/cm3 0.951 g/cm3

Melt Index, 2.16 kg ASTM D1238 2.5 g/10 min 2.5 g/10 min 5 g/10 min

Vinyl Acetate Content LG Method 18 wt% 28 wt% 28 wt%

Melting Point, DSC LG Method 84 °C 72 °C 72 °C

Tensile Strength @ Break ASTM D638 150 kg/cm2 140 kg/cm2 135 kg/cm2

Elongation @ Break ASTM D638 850 % 830 % 800 %

Hardness, Shore A ASTM D2240 85 80 79

Softening Point, Vicat ASTM D1525 60 °C 47 °C 46 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

* Wir and Cable Compound

Performance

• Uniform VA content and MI

• Strict contaminants control

• Excellent mechanical properties

• Development of new formulation with POE(Polyolefi n elastomer)

Foaming

10

EF18002Copolymer of Ethylene Vinyl Acetate

General

Additive • Anti-Oxidant

Application • T-die Film

• Waterproof Sheet

Properties

Item Test Based on Typical Value

EF18002

Density @ 23°C ASTM D1505 0.939 g/cm3

Melt Index, 2.16 kg ASTM D1238 2.5 g/10 min

Vinyl Acetate Content LG Method 18 wt%

Melting Point, DSC LG Method 84 °C

Tensile Strength @ Break ASTM D638 150 kg/cm2

Elongation @ Break ASTM D638 850 %

Hardness, Shore A ASTM D2240 85

Softening Point, Vicat ASTM D1525 60 °C

※ The data and information represented are intended as a general guide only and are not construed as specifi cation limits.

* Wir and Cable Compound

Performance

• Uniform VA content and MI

• Low gel level and strict contaminant control

• Excellent transparency

• Stable processability with good neck in

Film

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Issued date : Mar. 2014