Polyurethane Potting Sealant

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Chapu 0206 two-component flame retardant solvent-free Polyurethane potting material


Two-component solvent-free potting resin. It cures in room temperature or heating temperature. It’s using for electronics sealing, potting, flame resistant etc. The raw material does not contain heavy metal, it’s environmental with widely operability, high physical properties of the finished product, good adhesion with substrates. It can be deep cured, less heat release when curing, low shrinkage rate. Excellent flexibility after curing with flame retardant efficiency.

  1. Excellent low temperature and weather resistance properties.

  2. Excellent flame retardant efficiency

  3. Excellent electrical insulation

  4. Good waterproof, moisture resistance, very low water absorption

  5. Good adhesion to almost metal and plastic.

Color: Light yellow fluid

Packaging: Part A: 18 kg/pail, Part B: 4 kg/pail

Application:

  1. For electronic capacitor, automotive electronics models potting;

  2. For household appliances PCB potting, such as lampblack cookers, microwave oven, electric cooker, washing machine, air-condition.

  3. Moisture-proof and water-proof for PCB and magnetic induction loop of intelligent close stool, induction toilet, metal induction garbage can encapsulate and protection.

Use:

  1. Preliminary drying: please dry PCB and substrates which need to potting in 50°C condition,then put it in application place.

  2. Mixture: mixing A and B according to mass ratio, to reducemix air, should vertically stir as same direction about 2-3 minutes. The edge and bottom of container also should be stir well, otherwise, it will appear partial non solidified phenomenon. The entire operation process, A and B, mixer, stir tool etc. all should avoid getting to water and moisture. If working place has air-container, it will be better to keep constant temperature and humidity (T&H: 23°C,50%)

  3. Defoaming: For demanding of smooth potting surface without bubbles, the mixed material should be defoamed under the vacuum pressure ≤-0.1mpa. It’s better to defoame by stirring along with vacuum together. (Suggest to use automatic mixing equipment, it not only can be mixed in proper precise proportion, and will not mix in air bubbles)

  4. 4.Potting: Pouring the mixed sealant into the devices,for complex structure or big size devices, should be poured by times. Can use a hot air gun to eliminate the surface floating bubbles.

  5. Both A and B part should be sealed well, if it cannot be used up one time, please cover up bung again, sealed storage. Especially the part B, please try to reduce the time of contact with the air every time operating process.

  6. Mix A and B evenly as mass ratio in a short time, the mixed resin should use up within operation time, or else it cannot be use.

  7. The curing time is related to how many resin mixed and temperature, if the quantity is big and temperature is high, the curing time will be shorter; on the contrary, curing time will be longer.

  8. Uncured resin is easy to clean, cured resin can use methylene dichloride cleaning, soaking,softening, stripping.

  9. Curing: 25 °C/ (24) h, or 80 °C/60minutes, the humidity should below 50%, the curing time would be extended in a lower temperature.

  10. For equipment operation,after dovacuum separately in the container of A and B, then measuring and mixing to pot into the devices, curing in airing or tunnel kiln.

STANDARD/UNITS

VALUE of 0206


Viscosity of mixture

25°C, cps

250±50

Operation time

25°C, min

15±3

Gel time

25°C min, 100g

20±4

Hardness

Shore-A

23

Density

25°C, g/cm3

1.06 ± 0.05

Application temperature

°C

-50~100

Thermal conductivity

W/m.K

0.2



Chapu 0806 solvent-free two-component casting polyurethane encapsulant material


A solvent-free, two-component casting resin, based on Polyurethane. The resin (A) consists of organic compounds with hydroxyl-groups whereas the hardener (B) is based on isocyanates. By mixing both components in a ratio by weight, a flexible casting resin is achieved via chemical reaction. The product exhibits no measurable change in volume after curing.

  1. Base: Polyurethane resin (PUR)

  2. colorless, highly transparent and crystal-clear

  3. very good weather resistance, outstanding UV light stability, good thermalresistance

  4. operating temperature range -40 to at least +90 °C

  5. very high optical transparency with low optical damping

  6. very good adhesion to almost all materials

  7. resistant against water, moisture, condensate and numerous chemicals, bases,acids and oils

Color: Clear

Packaging: Part A:20 kg/pail, Part B: 20 kg/pail

Application: used as a transparent casting material for lightning application. It shows high optical transparency, good weather and thermal resistance, and UV light stability.

Type MethodUnit0806
Component
AB
Mix ratioBy weightA:B1:1
Appearance

Clear colorlessClear colorless
ViscosityGB/T 10247-2008mPa·s1400±1501200±150
GravityGB/T 15223-1994g/cm31.05-1.151.11-1.21
Pot lifeGB/T 10247-200855%RH,min20-30
Curing timeGB/T 10247-200855%RH,hr12
HardnessGB/T 531-2008Shore A80
Volume resistivityGB/T 1692-9225℃,Ω·cm1.4*1015
Water absorptionGB 8810-200524hrs, 25℃,%<0.35
Working TemperatureGBT 20028-2005-50–90


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Chapu X066 solvent-free 5:1 two-component casting resin Polyurethane potting material


A solvent-free, two-component casting resin, based on Polyurethane. The resin (A) consists of organic compounds with hydroxyl-groups whereas the hardener (B) is based on isocyanates. By mixing both components in a ratio by weight of 5:1 a flexible casting resin is achieved via chemical reaction. The product exhibits no measurable change in volume after curing.

  1. medium viscosity, easilyprocess

  2. excellent and stably electricaldielectric

  3. very low Waterabsorption

  4. good adhere to most metals andplastics

  5. excellent performance on low-temperature andaging

Color: Black

Packaging:Part A-25kg/Bucket, Part B-5kg/Bucket

Application: It is specifically formulated for automotive sensors, switches, transformers and other electrical devises requiring environments protection.

Items

Chapu X066 A

Chapu X066 B

Appearance

Black liquid

Brown liquid

Viscosity, cps(25℃)

600 ±100

40± 20

Gravity, g/cm3

0.98±0.03

1.15±0.05

Mixing ratio, by weight

A:B = 100 :75

Mix viscosity, cps(25℃)

350± 100

Pot life, mins

2

Track free time, mins,25℃, 55%RH

10

Hardness, shore A

50±5

Thermal conductive rate, W/m.K

0.25

Working Temperature, ℃

-60~100

MAX Temperature, Short time, ℃

115



Chapu 6857 flame retardant 5:1 room temperature or heating temperature Polyurethane encapsulation


Two-component solvent-free potting resin. It cures in room temperature or heating temperature. It’s using for electronics sealing, potting, flame resistant etc. The raw material does not contain heavy metal, it’s environmental with widely operability, high physical properties of the finished product, good adhesion with substrates. It can be deep cured, less heat release when curing, low shrinkage rate. Excellent flexibility after curing with flame retardant efficiency. It is used for pouring and potting of communication equipment, transformers, control power supplies, ignition controllers, electronic sensors, etc.

  1. Excellent low temperature and weather resistance properties.

  2. Excellent flame retardant

  3. Excellent electrical insulation

  4. Excellent flame retardancy

  5. Good waterproof, moisture resistance, very low water absorption

  6. Good adhesion to almost metal and plastic.

Color: Black

Packaging:Part A-25kg/Bucket, Part B-5kg/Bucket

Application: It is used for pouring and potting of communication equipment, transformers, control power supplies, ignition controllers, electronic sensors, etc.

PROPERTY

STANDARD/UNITS

VALUE of 6857

—-

—-PART A

PART B

Appearance

Visual inspectionBlack liquid

Brown liquid

Viscosity

25°C, cps800±100

200±40

Density

25°C, g/cm30.95±0.05

1.15±0.05

Pot life

25°C, min

35~45 (till 10,000 cps)

Mixture ratio

Mass ratio

A:B=4: 3

Mixture viscosity

25°C, cps

450±100

Initial curing time

25°C, hour

8~10

Hardness

Shore A

35±5

Working temperature

°C

-40~100

Thermal conductivity

W/m.K

0.25



Chapu 6066 two-component no solvent RTV/Heating curing Polyurethane Potting Sealant

Two-component no solvent RTV/Heating curing resin elastomer compound. Used for two component sealing, filling, fire retardant and thermal conductive area. Raw materials are free of heavy metal, green and environmental protection, wide technology operability. Finished products are with high physical properties, good adhesion to the substrate.

  1. Low viscosity, easy to operation

  2. Excellent performance on low-temperature and weatherability

  3. Excellent electrical insulativity and stability

  4. Good waterproof, moisture resistance, very low water absorption

  5. Good adhesion to most metals and plastics

Color: Black

Packaging:Part A-25kg/Bucket, Part B-5kg/Bucket

Application: For casting and potting of communications equipment, transformers, electronic instruments panel components, electronic ignition controllers, electronic sensors, connectors etc

PROPERTYSTANDARD/UNITSVALUE of 6066
—-—-PART APART B
AppearanceVisual inspectionBeige liquidBrown liquid
Viscosity25°C, cps5,500±500150±50
Density25°C, g/cm31.45±0.021.2±0.02
Pot life25°C, min30~40 (till 5,000 cps)
Mixture ratioMass ratioA:B=5: 1
Curing time25°C, hour2
HardnessShore A85±5
Volume resistanceDC500V, ohm-cm>1.0×1014
Working temperature°C-40~100
Thermal conductivityW/m.K0.4

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