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2501 Polyester Putty
Ingredients:
Unsaturated polyesters resins, modified resin, color pigment, stuffing, anti sediment materials, auxiliary agent and firming agent mixing ratio 100：2.
Characteristics:
Outstanding adhesive force and pliability, little shrink ratio. Mainly being applied to the leveling up and decoration of the blemishes, such as the drop pits of keelsons, pin-shaped cavities, crackles, and little welding lines etc. before closing the floating coat in the painting technics of passenger car or auto to satisfy the leveling and smoothness of the keelsons before painting the surface.
Main technical standard:
|
Item |
Index |
Testing Standard |
|
Outward appearance |
The color is unanimous, and there are no visible particles by naked eye. |
Visual examination |
|
Air drying |
Meet the customers’ requirements |
GB/T1728-79 |
|
Consistency |
9-12cm (except for the specialities) |
GB/T1749 |
|
Scratching performance |
Good handling, no curling |
|
|
Burnishing performance |
Burnishing easy, extraction powder is fast. |
|
|
Resistance to high temperature |
There is no bubbling and cracking under baking at 120℃ after drying |
|
|
There is no bubbling and cracking under baking at 80℃ after gelling |
|
|
|
Pliability |
≤70mm |
GB/T1748 |
|
Impact Strength |
≥9kg.cm (or 25kg.cm Not falling off) |
GB/T1732 |
|
Adhesive force |
≥40Kg/1.2cm2 |
GB/T5210 |
Reference for construction:
1、 Evenly mix the main ash and firming agent with the proportion being 100：2 (make the color unanimous), and using up them within the gelation time.
2、 Scratch the putty which has already finely mixed on the primer paint of double components after burnishing or the surface of cold-rolled sheet which has already been finished processing. If the thickly scratching is required, you’d better thinly scratch for many times to meet the required thickness. If some air bubbles infiltrate while scratching, you should thoroughly strickle it by means of scraper, so as to ensure the good adhesive force. The best wet milling time is 0.5-1h after scratching.2-3h is the best dry milling time.
Notes:
1、 Once the putty mix firming agent, don’t put it into can and cover it after using in case that the impregnant volatilization may result in the deterioration of main ash.
2、 The solidifying period of coating film will extend if the temperature is high or low. The consistence and gelation time of putty may adjust according to the requirements of customers’.
3、 This product is unsuitable for directly scratching on galvanization plates.
4、 Its quality can be guaranteed for 6 months since the date of its production. （If it does not beyond this period, it can be used continuously）.
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