Product Description Product
ParametersEPS(Expandable Polystyrene) is a lightweight, rigid,
plastic foam insulation material produced from solid particles of
polystyrene. Expandsion is achieved by virtue of small amounts of
pentane gas dissolved into the polystyrene base material during
production.The gas expands under the action of heat, applied as
steam, to form perfectly clesed cells of EPS.How do we classfiy EPS
Material?Regular Grades - High Expansion, Medium Grade, Fast
Cycling, Colorful beadsFlame Retardant - High Ratio Flame
Retardant, Low Pentane Flame Retardant.Fast cycling grade EPS
confers excellent processing and product properties Consistent raw
beads and good fluidity of foamed bead. No harmful odors in
pre-expansion and moulding Short maturing time Characteristically
rapid cooling in automatic molding machines and better performance
with vacuum system Uniform cell size, beautiful and flat surface
appearance Good integration inside, high resistance Use in contact
with food Recommended 40-60 expansion ratio.Recommended Processing
Condition Material Selection Select proper bead diameters according
to the required shape and density of the final product. Large
articles in medium and low density (less than 16g/l) require D-104
or D-103. Continuous pre-expanders require D-104 or D-105 while
batch pre-expanders require D-105/D-106/D-107. Pre-expansion Steam
Pressure: 0.15Mpa-0.30Mpa Pre-expansion Temperature: 96-108ºC
Conditioning Time: 4-24 Hours Moulding Steam Pressure of Stationary
Mould: 0.7-1.2kgf/cm² Steam Pressure of Moving Mould:
0.7-1.2kgf/cm²Health and Safety Fast cycling grade totally meets
food contact safe requirements as is less than 0.2%wt/wt. The total
content of aromatic hydrocarbon impurities are far lower than the
one in similar competitive products. During storage, transportation
and processing, low levels of pentane blowing agent will be
present, which will have an explosive range in air between
1.1-6.0%. The raw material and products must therefore be well
ventilated and kept far away from sources of ignition including
static electricity.Flame retardant EPS grades confer excellent
processing and product properties Consistent raw bead and good
fluidity of foamed bead Rapid expansion Relatively low density in
second-time expansion. Excellent flame retardation with the US UL
Product Security Certification. Wide range of operation and
suitable for various block machines, automatic machines and manual
presses. Fine cell, beautiful and flat appearance. Low shrinkage
rate of block in molding. Recommended 40-70 expansion ratio to
increase as per several-time expansion.FlameRetardant Property of
Block Molding Our company flame retardant EPS has passed the
ecaluation of the US Underwriters Laboratories Inc. (UL) and the
approval mumber is E212192. Improper processing will, however,
reduce the flame retardant coalings in expansion or blendingwith
general grade EPS will in both cases reduce the flame retardant
properties. In order to ensure flame retardantproperties, products
must be left to age to allow residual blowing agent to dissipate.
The aging period is mainly determined by the content of residual
blowing agent, apparent density and product size. For block, the
following data is procided from experience. (Under well ventilated
conditions) 15kg/m³ 20 mm thickness At 1east one-week shelf life 50
mm thickness At 1east two-week shelf life 30kg/m³ 20 mm thickness
At 1east two -week shelf life 50 mm thickness At 1east three-week
shelf lifeCorrect understanding of self-extinguishing of flame
retardant EPS Flame retardant EPS product is not never-burned
material, even it's named "flame retardant". Actually international
standed defined EPS foam building product as "flammable bulding
material", it's just more flame retardant compared with regular EPS
material. GB8626 China National Standard "lgnitability of building
products measurement" stipulates that the sample tested should be
stored at least 14 days with temperature 23±2ºC and the relative
humidity 50±5%. GB8624-2006 China National Standard "Fire
classification of construction products and building elements",
equal to Europe Union Standard "en13501-1:2002". The new version of
GB8624 has been changed a lot and expanded the understanding to the
parameters of burning release rate, burning heat release quantity,
burning smoke density and burning smoke density and burning result
toxicity. The classifications of self-extinguishing levels are
related with the final uses of the products. If the same product
has different final uses, it will have different levels of
self-extinguishing. According to EN13238-Conditioning procedures
and general rules for selection of substrates and
ENISO11925-2:2002- lgnitability of building products subjected to
direct impingement of flame-part 2: single-flame source test, the
flame retardant EPS with the brand SUNCHEM has passed the tests.
Recommended Processing Conditions Material Selection Select
the bead di
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