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도료용 폴리올 종류에 따른 폴리이소시아네이트와의 물성

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Table 1. Characteristic of Various Polyol Resins OH% (Solid) Viscosity(#G, 25  ℃) Color (#G) AV NV(%) *T g  ( ℃) Mn Mw PD Acrylic-0724 (A) 4.0% W 1 ↓  8.23 60.0 24.83 (10 ℃) 3,680 9,520 2.58 Alkyd-0725 (B) 4.0% V ∼W 1 ↓ 3.31 60.9 -9.30 2,260 10,500 4.65 Po
Table 3. Characteristic of Structural Element
Figure 1. Tan delta and T g  of cured urethane film reaction of  Desmodur N3300 and various polyols at 80  ℃  for 30 min.
Table 7. Test Results of Chemical and Physical Property Property Paint Hardness Solvent  resistance Gloss (%) Adhesion property(1 mm) Weather  resistance Q U V 240 h ( ΔE) Alkali /Acid resistance 240 h (ΔG) SST/Water resistanceboth side 3 mm (h) Heating re
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