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Polyurethane Potting Compound For Electronics

Flame Resistance Polyurethane Potting Compound SP2286 ◆Detailed Product DescriptionSP2286 is two-component low viscosity frame retardant potting compound at room temperature or heating.Fea

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    Flame Resistance Polyurethane Potting Compound SP2286             

    ◆Detailed Product Description

    SP2286 is two-component low viscosity frame retardant potting compound at room temperature or heating.

    Features

    1.Low viscosity, strong operability

    2.Excellent low temperature properties, weatherability .

    3.Excellent flame retardancy

    4.Excellent electrical insulating properties, stability 

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

    6.Good adhesion to most metals and plastics

    Use

    Potting compound for communications equipment, transformers, ignition controller, electronic sensors

    ◆Data Table

    Properties before curin


    SP2286

    SP2286

    Part

    A

    B

    Appearance

    Black Liquid

    Acid Liquid

    Viscosity, mPa.s(25℃ mPa·s)

    600±100

    40±20


    A+B

    350±100

    Density,  g/cm3(25℃ g/cm3)

    0.95±0.05

    1.15±0.05

    Working time ,25℃ min

    35~45(Until 10000mPa·s)

    Mixture/mass ratio, weight

    A : B= 4:3

    Preliminary curing time,℃/hr

    25℃/(8-10)h

    Viscosity after mixing, mPa.s (25℃)

    1000-2000

    500-900

    Density after mixing,  g/cm3(25℃)

    1.40

    1.08

    Operation time after mixing, min(25℃)

    2

    1

    Preliminary curing time,℃/hr

    80/1.5 or 25/10

    80/1.5 or 25/10

    Properties after curin

    Hardness, Shore A

    45±5

    /

    Volume resistance DC500V, Ω·cm

    >1015

    /

    Water absorption 24h,25℃,%

    <0.1

    /

    Dielectric strength, KV/mm,25℃

    >20

    /

    Flame retardancy, UL-94 level

    V-0

    /

    Application temperature , ℃

    -40~130

    /


    >16

    /

    Tensile-shear strength, Mpa, Fe/Fe

    >5

    /

    Thermal conductivity, W/m.K

    0.35

    /

    Dielectric constant, 50Hz,25℃

    5.32

    /

    Heat-resisting class ,IEC 85

    B

    /

    Heat Index, IEC216,℃

    130

    /

    Linear shrinkage, %

    0.8-1.0

    /

    Linear thermal expansion ,μm/(m,℃)

    120

    /

    1. GTT(glass-transition temperature) ,

    2. DSC,℃


    63


    /

    Note:

    ①All data above were tested under standardized condition.

    ②All data listed in the chart were for the generalized item in the series; please refer to the related data sheet for special items.

    ③Storage condition has a direct impact to the products’ shelf life, Please refer to the instruction for special items’ storing

    ◆Operation

    1.Preparation:Dry all containers and mould in 70-80 ℃ oven for 1-2 hours to remove moisture.

    Also can decrease the temperature, the longer heating time, the device to remove moisture

    2.Mixing : put A and B into a container. stirring clockwise (or counterclockwise) 2-3mins with same direction. to minimize stir into the air, pay attention to the bottom of container, the edge still need to stir well, otherwise there will be not curing phenomenon at local .

    3.Defoaming :The  potting surface should be  smooth without air bubbles ,the mixture should be vacuum cast off the air bubbles (≤-0.1mpa) .Mixing and dynamic deaeration of pumping air into vacuum state is helpful to remove air bubblers.It needs to omit steps 2 ,3 if use the mechanical measuring mix potting.

    4.Casting: the mixture is poured into the device, the device structure is complex, large volume, should be pouring. Pouring bubble available purging heat gun, etc. Can eliminate foam surface.

    5.Curing: 25 ℃ / h (8-10), or 80 ℃ / 1 h can be cured. The environmental humidity should be controlled in < 70%, low temperature should be take into consideration the longer curing time .

    ◆Package and Storage

    Package                                       Storage

    Part A : 20kg/drum                        Seal and Avoid light and light

    Part B: 25kg/pot                           Temperature in 10~30℃, humidity≤50%RH

    Shelf life: Part A 12months, Part B 6 months

    ◆Safety Operation Material

    MSDS isn't included here. Please read TDS, MSDS and label carefully before operation.You can get MSDS from Sepuna or other distributors, or mail to service center sepuna@sepuna.cn, or call +86-400-882-1323.

    ◆Product Warranty

    All product properties and application details based on information believe to be reliable and accurate. But you still need to test its property and safety before application. The advices we supply don't apply in any circumstances. Sepuna don't make assurance of any other applications outside the specification until Sepuna supply a special written guarantee. Sepuna is only responsible to replace or refund if this product is defective within the warranty period stated above. Sepuna makes it clear that will not be liable of any accidents.


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