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BJB Polyurethane TC-8740 A/B
| Category: | TSU , Polyurethane Thermoset Elastomer |
| Manufacturer: | BJB Enterprises, Inc. |
| Trademark: | BJB Polyurethane |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | u4bePk_BJB-Polyurethane-TC-8740-A-B.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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TC-8740 A/B is a two-component urethane casting compound that is specifically formulated for high abrasion and impact resistance. It is recommended for use for the production casting of highly wear-resistant parts and linings. This product is a safe, easy-to-handle, room temperature mixing and curing system that does not contain TDI, MDI, MDA, or MOCA. TC-8740 A/B is relatively insensitive to typical environmental moisture and will make good void-free parts without the problems that some conventional urethane systems exhibit. Because of this product's exceptional toughness and abrasion resistance, castings made with TC-8740 A/B are particularly suitable for mining and mineral process industries. Product Highlights:
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| Physical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Specific Gravity | |||
| -- 1 | 1.09 | g/cm³ | ASTM D792 |
| -- 2 | 1.17 | g/cm³ | |
| Shrinkage | 0.30 | % | ASTM D2566 |
| Thermoset | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Gel Time | 35.0 | min | |
| Work Time 3(25°C) | 20.0 | min |
| Additional Information | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Cure Time (25°C) | 5.0 - 7.0 | day |
| Hardness | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Durometer Hardness (Shore D) | 35 - 45 | ASTM D2240 |
| Elastomers | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Stress | ASTM D412 | ||
| 100% strain | 14.5 | MPa | ASTM D412 |
| 200% strain | 17.2 | MPa | ASTM D412 |
| 300% strain | 21.2 | MPa | ASTM D412 |
| Tensile Strength (Yield) | 26.7 | MPa | ASTM D412 |
| Tensile Elongation (Break) | 550 | % | ASTM D412 |
| Tear Strength | 81.1 | kN/m | ASTM D624 |
| Thermoset | Nominal Value | Unit | Test Method |
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| Thermoset Components | |||
| Component a | Mixing ratio by weight: 100, mixing ratio by capacity: 100 | ||
| Component B | Mixing ratio by weight: 25, mixing ratio by capacity: 23 | ||
| Shelf Life (25°C) | 26 | wk | |
| Thermoset Mix Viscosity | Brookfield | ||
| 25°C 4 | 6150 | cP | Brookfield |
| 25°C 5 | 250 | cP | Brookfield |
| 25°C | 3430 | cP | Brookfield |
| Demold Time (25°C) | 240 - 360 | min |
| Additional Information | Nominal Value | Unit | Test Method |
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| In order to achieve maximum physical properties, a post cure with heat is required. BJB recommends 24 hours at ambient temperature, 77°F (25°C), followed by 16 hours at 160°F (71°C). |
| Note Message | |
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| 1 . | Part A |
| 2 . | Part B |
| 3 . | 100g mass |
| 4 . | Part A |
| 5 . | Part B |
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