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HS-2281SSK
HUAKE
Principal Properties & Application：
HS-2281SSK is an unsaturated polyester resin made primarily from isophthalic acid and neopentyl glycol. It is designed for use in SMC (Sheet Molding Compound) and BMC (Bulk Molding Compound) applications. This resin exhibits medium viscosity, high reactivity, excellent mechanical strength, electrical properties, heat resistance, and chemical resistance. It is suitable for use in electrical components, sanitary ware, and industrial equipment.
Specifications of liquid resin：
Item | Unit | Specification | Test Method |
Appearance | --- | Light yellow, slightly turbid liquid | GB/T 8237.6.1.1 |
Viscosity (25°C) | mPa.s | 1000-1500 | GB/T 7193.4.1 |
SPI-GT | min | 23-26 | HK-D-DB001 |
SPI-CT | min | 25-28 | HK-D-DB001 |
SPI-PET | °C | 235-265 | HK-D-DB001 |
Acid Value | mg KOH/g | 12-15 | GB/T 2895 |
Solid Content | % | 58.5-61.5 | GB/T 7193.4.3 |
Color Number (Harzen) | --- | ≤100 | HK-D-DB036 |
Water Content | % | ≤0.08 | HK-D-DB007 |
Curing system in SPI test: BPO paste 2%.
Physical properties of casting(for reference only)：
Item | Unit | Test Value | Test Method |
Tensile strength | MPa | 65 | GB/T 2568 |
Tensile modulus | MPa | 3050 | GB/T 2568 |
Breaking elongation | % | 3.0 | GB/T 2568 |
Flexural strength | MPa | 115 | GB/T 2570 |
Flexural modulus | MPa | 3350 | GB/T 2570 |
Impact strength | kJ/m2 | 10.5 | GB/T 2571 |
HDT | ℃ | 120 | GB/T 1634 |
Hardness (Barcol 934-1) | -- | 49 | GB/T 3854 |
Note:
1) The casting is made according to GB/T8237; Curing System: Accelerator 0.6% Co-Naph: 2.0% ; Hardener AKZO M-50: 2%；
2) Post curing: RT×24hrs+60℃×3hrs+110℃×2hrs
