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ZC-189 resin is an unsaturated polyester resin with phthalic anhydride, maleic anhydride and standard glycol as the main raw materials. It has been dissolved in styrene cross-linking monomer and has medium viscosity and medium reactivity.
| Item | Range | Unit | Testing Method |
| Appearance | Light yellow transparent thick liquid | - | - |
| Acid value | 19-25 | mgKOH/g | GB/T 2895 |
| Viscosity，25℃ | 0.30-0.60 | Pa.s | GB/T 7193.4.1 |
| Solid content | 59-65 | % | GB/T 7193.4.3 |
| Gel Time，25℃ | 12-30 | min | GB/T 7193.4.1 |
| Heat stability 80 ℃ | ≥24 h | GB/T 7193-2008 |
Note：25℃ gel time testing：resin 50g filled in 0.9g T-8M(1% Co) and 0.9g M-50 (Akzo-Nobel)
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