Rigid Polyurethane Foam
Rigid polyurethane (PUR) foam shows
its versatility through excellent chemical and physical properties,
both of which enable it to be used in a wide variety of multi-functional
building and structural products which have high demand for
insulation. Rigid polyurethane foam boasts for its low thermal
conductivity, high shear strength, excellent processability,
high chemical resistance, adjustable flame-retardance, good
adhesion, etc.
Our PUR foam products range from PUR foam system to PUR panels
(including continuous moulding panels )
JY series rigid polyurethane foam system
Introduction
They are mixed by polyol, blowing agent, catalyst, additives
at optimum ratio, directly used in on-the spot foaming. The
raw material has good fluidity and finished foam products have
uniform density, high strength, good dimensional stability at
low temperature, low thermo conductivity, etc.
Physical and Chemical Properties
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Density(g/m3,20¡æ):
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1.1~1.2
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Value of OH/ (mgKOH/g):
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400~450
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Flash Point/¡æ:
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135~145
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Viscosity (20¡æ)/cps:
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120~200
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Appearance:
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amber liquid
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Shelf life:
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six months
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Options
JY-4351
Especially used by means of spraying in refrigerator, freezer
and other applications with high demand for heat-preservation.
JY-4352
Especially used in polyurethane panel injection.
JY-4353
Especially designed for pipeline Polyurethane foam.
JY-4354
Especially used to manufacture Polyurethane foam products for
refrigerator and water heater.
Reaction Properties with Isocyanate (manual foaming)
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JY-4351
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JY-4352
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JY-4353
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JY-4354
|
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Material temperature/¡æ
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21~23
|
21~23
|
21~23
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21~23
|
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Cream time /s
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1~5
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20~35
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15~25
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8~15
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Fibre time /s
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5~18
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100~150
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80~100
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70~95
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Tack-free time /s
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7~20
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120~180
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90~120
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100~150
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Notes: the reaction properties
can be adjusted to meet customers' specific requirements.
Typical Foam Properties
|
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JY-4351
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JY-4352
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JY-4353
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JY-4354
|
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Density /(kg/m3)
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25~40
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25~40
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25~40
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25~35
|
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Thermal conductivity (20¡æ)/(W/m.K)
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¡Ü0.024
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¡Ü0.024
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¡Ü0.024
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¡Ü0.022
|
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Dimensional Stability
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¡Ü1.0
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¡Ü1.0
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¡Ü1.0
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volume deformation (-20¡æ,72hr) -0.5%
volume deformation (+70¡æ,72hr) +0.5%
|
|
Compress Strength /kPa
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¡Ý100
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¡Ý100
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¡Ý100
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¡Ý170 (horizontal)
¡Ý100 (perpendicular)
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Water absorption (%)
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¡Ü 2
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¡Ü 2
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¡Ü 2
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¡Ü1.5
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Storage
Shelf life is six months minimum when stored at 59oF~68 oF and
suitable storage environment. Like most construction materials,
it must be stored in a dry, cool and well-ventilated place free
from direct sunshine and other heat sources.
As it is easy to volatilize and absorb moisture, please use
it up once. If not, please do keep the rest sealed right after
use in order to prevent it from moisture and volatilization.
Safety & Precaution
*Please do wear rubber gloves, safty glasses and guarding
clothes before application. Gloves should be changed frequently,
working environment should be well-ventilated, equipments
should be checked regularly and application site should be
kept clean.
*polyether has slight toxicity because of the existence of
low-density additives such as catalyst in it.
*The material is flammable.
*Once contacted with eyes: flush with low-pressure and clean
water for at least 15 minutes and go for doctor at once.
Once contacted with skin: flush with clean water and wash
with soap.
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