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WP526

 

AKSAD GROUP PETROCHEM

WP526


 

WP526 , is one of the TPC Performance expandable polystyrene products range. It is a free flowing expandable polystyrene grade,consisting of spherical polystyrene beads containing pentane as the expansion agent.

Expandable polystyrene (EPS) is normally expanded to achieve the low densities required for final step expansion.The typical density of this grade is around 25 kg/m3,but other densities are possible depending on applications and equipments.

Applications:

Shape Molding,Cups

Because of its small bead size WP526 is also used for very thin-wall water proof shape molding products such as drinking –cups

Packaging and storage:

WP526 is shipped in octabins (height 176 cm) on wooden pallets (115cm x 115 cm), containing 1000 kg net of material.

The octabins are not weather- or water-proof and must therefore not be exposed to outdoor conditions.

In order to obtain the desired properties of WP526, the raw material should be stored below 20 °C and be processed within 1 month.

Processing:

Preexpansion:

With discontinuously operating, state-of-the-art preexpanders WP526 can be preex-panded to densities of approx.25 kg/m3.

Lower densities can be achieved by double preexpansion or in optimized machines.

WP526 has been treated with an antistatic agent to prevent a buildup of electro-static charge during transport.

Intermediate aging:

Intermediate aging should be between 10 and 48 hours.

Moulding:

WP526 can be processed in industry standard moulding machines within a relatively wide range of steaming settings

If a regenerative agent is added care has to be taken that the density of the regenerative agent equals the preexpansion density as closely as possible to prevent a segregation during production.

Food Contact:

This grade has food contact approval.

 

Typical Properties

 

TEST METHOD

TYPICAL VALUE

UNIT

PROPERTY

SUNPOR 7.2.5(MIN 90% BY WT)

(0.3-0.5)(>90%wt)

MM

BEAD SIZE

SUNPOR 7.2.4

55

-

K-VALUE

SUNPOR 7.2.2

5.2%

WT%

PENTANE CONTENT

SUNPOR 7.2.6

22-30

KG/M3

EXPANDED DENSITY

SUNPOR 7.2.1

500

PPM

RESIDUAL MONOMER

*All above mentioned data are typical values and not to be construed as real specifications.Users should confirm results by their own tests.For more information about guaranteed items, please refer to S.S.S.(Standard Sales Specifications)


 

 

 

 

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