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[China]
Trade Verify
Address: No.34,Xilin Road,Changzhou,Jiangsu,P.R.C.
Contact name:
Changzhou Keyuan Chemical Industry Co.,Ltd. |
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Verified Suppliers
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KY-928 two component additional heat Conduction Liquid Silicone Sealant for electrcial equipments' potting especially for the high power electrical components
1. Product characteristics
KY-928 silicone sealant is one kind of two component additional heat conduction silicone
rubber, which can be cured under room temperature or cured by
heating if you need quick curing speed.
1) Good flowability before curing, moderate working time and
self-defoaming ability, easy for using.
2) Excellent resistance to cold and heat temperature.
3) Excellent electricity insulating property, resistance to
electric arc, corona shock and shock, long-term protection to
electrical equipment.
4) Good ability of water proof, ozone resistance and weathering
aging.
5) Outstanding adhesive bonding with glass,aluminium,carton steel
and copper material.
6) Good heat-conducting
property
2. Application
1) can be widely used for any electrical components and
equipments'potting, splicing, fixed position sealing and water
proof.
2) for the heat dissipation of electronic component.
3) for the heat dissipation of power source.
3. Main technical index
NO | ITEM | TECHNICAL INDEX | TESTING STANDARD | ||
Before Curing | |||||
1 | Appearance | A | B | / | |
white | black | ||||
2 | Viscosity,mPa·s (25℃) | A | 3000～8000 | GB/T 10247-2008 | |
B | 3000～8000 | ||||
3 | Working time at 23℃(min) | ≥20 | GB/T 16776-2005 | ||
4 | Preliminary curing time (h) | ≤2 | No flow in verticality | ||
After curing(7days under temperature of 23±2℃,humidity(50±5%)) | |||||
5 | Appearance | Gray | / | ||
6 | Density | 1.35～1.85 | GB/T 533-2008 | ||
7 | Hardness(Shore A) (2hours after Vulcanizing at 25℃) | 35～70 | GB/T 531.2-2009 | ||
8 | Tear resistance(MPa) | 1.2～2.5 | GB/T 528-2009 | ||
9 | Shear Strength(Mpa) | ≥1.0 | GB/T 7124-2008 | ||
10 | Volume resistivity(Ω.cm) | ≥1χ1015 | GB/T 1692-2008 | ||
11 | Dielectric Strength (kV/mm) | 18～23 | GB/T 1695-2005 | ||
14 | Dielectric constant(1MHz) | 3.1～3.4 | GB/T 1693-2007 | ||
15 | Flame retardant rating | UL94 V–0 | GB/T 10707-2008 | ||
16 | Thermal Conductivity (W/mK) | 0.4～1.0 | GB/T 11205-2009 | ||
4. Color of product
1) For this KY-928, A component is black, B is while, the final
silicone rubber is gray.
2) the color can be done according to client’s demand.
5. Package
1) Packed in 10L/20L with plastic pail, A and B is packed
separately.
2) the package way can be done according to client’s demand.
6. Usage and dosage
1) Stirring A and B to uniformity before using.
2) Mixing A and B component according to A: B = 1:1 by weight,
puring the mixture in to the product you need. Lay aside the
product in room temperature until the mixture becomes elastomer,
which need 4-8hours. for low-curing and low-viscosity
encapsulation, start potting after the bubbles automatically
vanishing; for fast-curing and high-viscosity encapsulation, should
pot after pumping take off the bubbles by vacuum in the mixture of
A and B,
3) If using automatic-mixing machine to mix the A and B, before
using, mixing and stirring A and B in the machine according to A: B
= 1:1 by weight or volume for testing.
7. Product packaging and storage:
1) This product should be stored in a cool and drying place under
the temperature of ℃～27℃, the shelf life is 9 monthes from the
production date.
2) The products according to the non-dangerous goods storage and
transportation.
8. Matters to be attention
1) Clean the surface of the potting product, during the storage and
using procession, the sealant should be avoided contact with the
heavy metal as nitrogen, phosphorus, sulfur and their compound,
otherwise the catalyst in the sealant will not vulcanize.
2) Potting low-voltage apparatus, the defoaming is not necessary,
while for high voltage electrical apparatus, it is necessary for
defoaming about 3-5min in vacuum before potting.
3) A and B should be mixed intensively otherwise which will
influence the curing and performance of the rubber.
4) Storage A and B separately, using them in short time after
mixing.
