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How is SIFEL unique? |
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SIFEL can be applied as adhesive, potting
and coating as well as the product for molding. This is
because SIFEL is flowable liquid material in comparison
to conventional fluororubber which is a solid compound.
After simply curing by heat, SIFEL will become a high-performance
elastomer with a high level of chemical resistance and
low temperature. |
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How is SIFEL cured? |
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SIFEL cures at 150ºC(302F) in general
but curing time differs depending on the type of product.
Typical curing time is 1 hour for adhesive, potting and
coating, and only one minute for LIMS grade. |
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What is LIMS? |
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LIMS stands for Liquid Injection
Molding System. LIMS is not only efficient for mass production
but will also mold precisely and consistently due to its
liquid material. |
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How well does SIFEL
adhere to substrate? |
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SIFEL 2000 series are developed for self-priming
to metals, plastics, ceramics, etc. Other SIFEL series
are also utilized for adhesive applications. |
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Does SIFEL contain any solvents? |
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No. SIFEL does not contain any kind of solvents. SIFEL is naturally liquid type without any solvent and can be provided in wide range of viscosity. Diluted SIFEL may be available upon request. |
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What is the maximum
heat resistance? |
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Heat resistance of SIFEL is good. Physical
properties do not change even if heated at 200ºC(400F)
for an extended period of time. |
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What is the minimum
temperature that SIFEL can withstand? |
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SIFEL keeps its elasticity even at -50ºC(-58F)
which is much lower than conventional fluororubbers. |
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What are the current
applications for SIFEL? |
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SIFEL is popular in the automotive industry
as well as many other industries where oil, gas, fluid,
and chemical resistances with low and high temperatures
are required. SIFEL adhesives, coatings, and gel are used
in sealing, potting, and coating of electronic parts.
In molding versions, O-rings and diaphragms made from
SIFEL are the most common applications. |
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What are the electric
properties of SIFEL? |
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Volume resistivity of SIFEL is 103G ·m,
BDV is 30KV/mm. The most unique electric feature of SIFEL
is the low dielectric constant at high frequencies; is
2.2 at GHz. |
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What is the thermal
conductivity? |
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Typical conductivity of SIFEL is 0.1W/m·K. |
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What is the moisture
permeability of SIFEL? |
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It is very low, 1/20 of silicone rubber. |
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What is the level of
ionic impurities? |
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SIFEL is very pure. Any ionic ingredients(Na+,K+,NH4+,F-,Cl-)
are contained below 1 ppm. |
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Is SIFEL resistant
to ozone? |
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No changes were observed under exposure
to 100 ppm ozone at 40ºC(104F). |
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What is the shrinkage
rate of cured SIFEL? |
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It is approximately 3% when it is molded
at 150ºC(302F). |
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What is the curing
mechanism of SIFEL? |
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SIFEL reacts under an addition curing
system with existence of platimum catalyst. This system
proceeds at high yields and does not produce any by-product. |
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What are the handling
precautions? |
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When SIFEL products are exposed to sulfur,
phosphorus, nitrogen or amine-containing compounds, organometallic
salts, etc., curing may be inhibited under the catalyst
poison phenomenon. Avoid any type of contamination. Operation
in a clean environment is required. |
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How should SIFEL be
stored? |
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Seal containers tightly and keep in a
cool, dark place. Exposure to heat, sunlight, moisture
or chemicals may cause quality changes. One-component
types are required to be stored in a refrigerator or freezer. |
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