Polyurethane Automotive Sealant 

PU8730

∎Product Description

PU8730 is one component direct glazing polyurethane adhesive, can be used for the high strength adhesion of the glass and the body of the automobile.

∎Key Features

1. Single component, moisture curing, no dripping for vertical application

2. Good elasticity and initial adhesion, high bonding strength

3. Can withstand high strength dynamic loads; no sagging while interrupting gluing

4. Good Adhesion with various substrates such as glass, aluminum plate etc.

5. Paintable and polishable surface, outstanding application property

6. No corrosion on base material, no penetration pollution, little volatile smell

7. Good aging resistance and weather resistance

∎Typical Applications

Used for the high strength adhesion of the glass and the body of various vehicles.

∎Technical Data Table

PROPERTY	STANDARD/UNITS	VALUE
Main raw material	-----	Polyurethane
Appearance	Visual inspection	Black, paste
Density	Gr/cc	1.20±0.05
Sagging	mm	0
Solid content	%	≥95
Tack free time	min	20~60
Curing speed	mm/ 24hrs	≥3.2
Hardness	Shore A	≥45
Break strength	MPa	≥6.0 90
Elongation at break	%	≥450
Tensile strength	MPa	≥4.0
Shear strength	MPa	≥3.0
Tear strength	MPa	≥15
Low temperature properties	°C	No fracture in -45°C
Application temperature	°C	5~35
Service temperature	°C	-40~90; 120(short period＜8hrs)

Note：All data above were tested under special condition; storage condition has a direct impact to the products’ shelf life.

∎Directions for Use

Tool: Manual or pneumatic plunger caulking gun

l Cleaning: Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating.

l For cartridge

1. Cut nozzle to give the required angle and bead size

2. Pierce the membrane at the top of the cartridge and screw on the nozzle

3. Place the cartridge in an applicator gun and squeeze the trigger with equal strength

l For sausage

4. Clip the end of the sausage and place in barrel gun

5. Screw end cap and nozzle on to barrel gun

6. Using the trigger extrude the sealant with equal strength

l Attention of operation

Wear suitable protective clothing, gloves and eye/face Protection. After contact with skin, wash immediately with plenty of water and soap. In case of accident or if you feel unwell, seek medical advice immediately.

∎Packing and Storage

310ml cartridge, 12pcs or 20 pcs per carton;

400ml/600ml sausage, 20pcs/ carton; 240kg/drum

 

When stored at 5~25°C, humidity≤50%RH in the original unopened containers, this product has a usable life of 12 months from the date of production. Sampling test for products which exceed shelf life before taking use.