1. INTRODUCTION :
YE-2630 is a outdoor saturated hydroxyl polyester resin compounding BLOCKED IPDI for
thermosetting powder coating, Applies to outdoor decorative and functional painting with good
durability and flow.
2. CHARACTERISTICS OF THE RESIN
Appearance………………………...pale granules
Acid value (mgKOH/g)……………………<10 (1)
Hydroxide value (mgKOH/g)…………… 35-45
Color……………………………………max.3 (2)
Viscosity at 165°C(mPa..s)………30000--45000 (3)
Glass transition temperature(Tg).….approx.63°C (4)
Softening point(°C)……………………110-115
(1)ISO-3682 (2)ASTM-D-2849
(3)ICI CONE & PLATE (4)DSC(METTLER)
3. APPLICATION:
TYPICAL POWDER FORMULA:
Barium sulfate………………………... 100 (1)
Titanium dioxide……………………… 300 (2)
Polyester YE-2630………………………498
Blocked IPDI ………………………...102 (3)
Flow agent …………………….........10 (4)
Benzoin …………………………………5
Lustering agent 701 ………………………8
(1) Shaanxi Fuhua Chemical Co., Ltd
(2) DuPont R-902 or R706
(3)VESTAGON B-1530, NCO%=15% (Supplier: HULS) Other BLOCKED IPDI are suitable.
YE-2630/BLOCKED IPDI=83/17
(4) YL-1080 (Silica Adsorption 65% Supplied by Yin Yang Resin Co., Ltd)
4.MANUFACTURING PROCEDURE AND TESTING
MANUFACTURING
a. Pre-mixing ( dry blend of the above components)
b. Homogeneous extrude at temperature of 105°C-115°C
c. Cool down and early pieces
d. Abrading powder to obtain a free -flowing powder maximum particle size of 80micron
COATING CONDITION:
Voltage…………………………………. 60-80kv
Air pressure………………………….. 1-2kg/cm2
Test panel……………………….0.35 mm steel panels
CURING CONDITION:
15minutes at 200°C (object temperature)
TEST RESULT:
Film thickness………………………… 60-80µ
Gloss……………………………………>90% (1)
Erichsen slow penetration…………… >7mm (2)
Direct/reverse impact……………… >50kg-cm (3)
Conical mandrel……………………... pass (4)
Crosshatch adhesion………………... Gt=0 (5)
(1)ASTM D-523(60°) (2)DIN 53165
(3)ASTMD-2194 (4)ASTM D-522
(5)DIN53151
5. PACKING AND STORAGE
25 kilogram paper bag or PE bag; Stored in a cool dry indoor place at temperature of
-20°C--35°C, Avoid long-term exposure to direct sunlight. In the above-mentioned storage
conditions the shelf life of resins for 1 year. Experience has shown that the storage life of the
resin up to 3 years, it is proposed that the testing products beyond the shelf life products can still
be used for qualified.
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.