Polyurethane sealant (Polyurethane Resin) 4050A / B
 
After curing the appearance of

I. Introduction:

Department of polyurethane product packaging materials, with excellent low temperature properties, weather resistance, electrical performance and low water absorption.

Second, the conventional performance:

Test items
 Units and Conditions
 WL-4050A / B
 
Appearance
 A
 /
 Yellowish transparent liquid
 
B
 Light yellow liquid
 
Viscosity
 A
 25 ℃ mPa · s
 350 ± 50
 
B
 110 ± 10
 
A + B
 200 ± 50
 
Density
 A
 25 ℃ g/cm3
 1.15 ± 0.05
 
B
 0.95 ± 0.05
 
Applicable period
 25 ℃ min
 20 to 40 (to 10000mPa · s only)
 
Ratio
 Weight ratio
 A: B = 75 ± 2: 100
 
Curing conditions
 ℃ / h
 60 ℃ / 3h or 25 ℃ / 24h
 
Shelf life
 Sealed at room temperature
 Three months
 

Third, the curing characteristics:

Item
 Unit or condition
 WL-4050A / B
 
Hardness
 Shore-A
 30 ± 5
 
Volume resistivity
 25 ℃, Ω · cm
 > 1013
 
Water absorption
 24hrs, 25 ℃,%
 <0.3
 
Dielectric strength
 25 ℃, kV / mm
 > 20
 
Elongation
 %
 > 150
 
Flame-retardant
 UL94 V-0
 Quite
 

Fourth, use:

For electronic components, circuit boards, electronic ignition controller of the casting and potting.

Fifth, use of technology:

1. Warm-up: Please be pouring device 70 ~ 80 ℃ bake 1 to 2 hours to remove moisture devices;

2. Mixed: A weighed amount of material, then, to join B material, mix well;

3. Deaeration: removal of the gas mixture to a vacuum;

4. Cast: After the deaeration the mixture poured into the device, 60 ℃ / 3hrs or 25 ℃ / 24hrs or low temperature curing time can be fully extended.

 

 VI Notes

[Workplace Safety]

Work needs to take

Gloves must be

Sleeves are recommended when skin contact

Goggles / safety glasses required

Protective cover / dust cover does not require

[Skin Protection]

Bare skin protection before work ointment applied

Work or apply protective ointment nutrition

Wash contaminated skin graze with a paper towel, then wash with warm water and alkali-free soap, then dry with a disposable towel. No solvent

[Cleanup] workplace

    Use light-colored paper covered table. The use of disposable beaker and so on.

[Processing] spill

Adsorption using sawdust or cotton waste after, on a plastic-lined trash

[Treatment] ventilation

Plant often ventilation, ventilation

Install exhaust fan in the workplace, the operator should be taken to avoid inhalation of vapors

7, Packing specifications:

    A metal container 20KG packaging material; B packaging material for the 18KG metal drums.

* Note: The above performance data for the product in 70% humidity, temperature 25 ℃, the typical test data for customers reference, and can not guarantee that in a specific environment can be achieved when all the data. Please use the customer, subject to the measured data.