1. INTRODUCTION
YE- 9500 is a indoor saturated carboxylic polyester resin compounding with epoxy
resin at 75/25 for thermosetting matting powder coating, applied to indoor decorative
and functional powder coating.
2. CHARACTERISTICS OF THE RESIN
Appearance…………………………pale granules
Acid Value (mg KOH/g)……………20-26 (1)
Color………………………………max.2 (2)
Viscosity at 165℃ (mPa…S)……30000-45000 (3)
Glass Transition Temperature (Tg)…approx. 57ºC (4)
Softening Point (℃)………………105-115
(1)ISO-3682
(3)ICI CONE & PLATE
(2)ASTM-D-2849
(4)DSC(METTLER)
3. TYPICAL POWDER FORMULA A B:
Barium Sulfate………………………………200 200 (1)
Titanium Dioxide……………………………200 200 (2)
Polyester YE-9500………………………… 450 150
Epoxy……………………………………… 150 450 (3)
Flow Control Agent…………………………10 10 (4)
Benzoin…………………………………… 5 5
603-1A…………………………………… --- 40
(1) Shanxi Fuhua Chemical Co., Ltd
(2) Dupont R-902
(3) ARALDITE GT-7004, WPE: 775 (Supplier: Ciba-Geigy)
D.E.R.663U WPE: 780 (Supplier: DOWS Chemical) other epoxy supplier are also
suitable. YE-9500/EPOXY = 75/25
(4)YL-1080 (Silica Absorption 65% supplied by YinYang Resin Co., Ltd)
4. MANUFACTURING PROCEDURE AND TESTING
(1) MANUFACTURING
a. Pre-mixing (dry-blend of the component above)
b. Homogeneous extrude at temperature of 110-115°C)
c. Cool down and initial grinding
d. Milling and sieve to obtain a fine free-flowing powder maximum particle size of
80 µm
(2)COATING CONDITION:
Voltage………………………… 60-80 kv
Air Pressure……………………1-2kg/cm2
Test Panel………………………0.35mm steel panel
(3) CURING CONDITION:
10 minute at 200°C (object temperature)
(4) TEST RESULT A B:
Thickness………………60-80Filmµm 60-80µm
Gloss………………………>88% <10
Conical Mandrel……………Pass Pass
Hardness……………………HB-H HB-H
5. PACKING AND STORAGE
25 kilogram paper bag or PE bag; stored in a cool dry indoor place at temperature of
-20℃ to 35℃. Avoid long-term exposure to direct sunlight. The shelf life of the resin is
one year in the above-mentioned storage conditions. Experience has shown that storage
life of the resin is up to 3 years. It is proposed that the testing product beyond the shelf life
can still be used after tested qualified.
Note: The above-mentioned indications are based on carefully made tests. No
liability can be assumed in the event of any inaccuracy or incompleteness being found in
the value listed above and consequently we recommend evaluation in your own
laboratories prior to use.