301# Polyester Putty Light
Ingredients:
Unsaturated polyesters resins, modified resin, color pigment, stuffing, anti sediment materials, Light minisize substance, auxiliary agent and firming agent mixing ratio 100：2.
Characteristics:
Good scratching performance, excellent resistance to temperature changing,outstanding adhesive force and elasticity. Resistance to some certain of baking. This product is mainly used to repair small-area nicks and holes quickly prior to painting dressing. It is easy to burnish, contains special fillings different from traditional products and can reduce the weight of product and the construction. Also, the product enjoys good flexibility and is easy to use.
Main technical standard:
Item Index Testing Standard
Color Light gray, and being great dilicary. Visual examination
Air drying Meet the customers’ requirements GB/T1728-79
Consistency 9-12cm (except for the specialities) GB/T1749
Outward appearance The color is unanimous, and there are no visible particles by naked eye. Visual examination
Pliability ≤60mm GB/T1748
Impact Strength ≥18kg.cm (35 kg.cm Not falling off) GB/T1732
Resistance to high temperature There is no bubbling and cracking under baking at 140℃ after drying
There is no bubbling and cracking under baking at 80℃ after gelling
Adhesive force ≥3.0MPa GB5210
Scratching performance Good handling, no curling (suitable for the scratching of board)
Shrinkage ratio ≤0.6%
Burnishing performance (Powder rate) ≥0.15% GB/T1770
Resistance to high and low temperature changing More than three cycles
Allowable time for scratching 4~5 min
Water milling time ≥30min
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 (As for wet milling polishing, paint-spraying should be done after the water vapor dries out).2-3h is the best dry milling time.
Notes:
1、 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 (pot life) of putty may adjust according to the requirements of customers’.
3、 This product is unsuitable for directly scratching on galvanization plates.
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