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Product Description
WL-1605C is a pentaerythritol unsaturated polyester resin with medium viscosity, high reactivity, good heat resistance, impact resistance, and excellent electrical properties, suitable for SMC/BMC products.
Application
WL-1605C resin is specially designed for SMC/BMC production processes. It is widely used in automotive, sports equipment, electrical, and construction industries. WL-1605C has stable thickening performance, and when combined with low-shrinkage, low-profile additives such as WL-3814 and WL-3892, it can be formulated into standard low-shrinkage SMC/BMC.
Properties
performance | Parameter | unit | standard test |
Exterior | light yellow transparent | - | GB/T8237 |
Viscosity 25℃ | 1200-1500 | mPa.s | GB/T7193 |
Acid value | 19-25 | mgKOH/g | GB/T2895 |
solid content | 63-68 | % | GB/T7193 |
82℃ reactivity | 7-12 | minutes | GB/T7193 |
Moisture | ≤0.1 | % | GB/T8237 |
Note: 82℃ reactivity: add 1.0g CH50 (AKZO-Nobel) to 50g of resin.
Liquid Resin Properties (Typical Values)
performance | numerical value | unit | standard test |
Storage period (uninitiated, dark place), 20℃ | 3 | month | - |
SMC Recommended recipe for initial paste
Components | weight |
WL-1605 | 70 |
WL-3814 | 30 |
TBPB | 1.5 |
zinc stearate | 4 |
heavy calcium carbonate | 150 |
Magnesium oxide paste (35% active magnesium oxide content) | 2.5 |
Resin cast body properties (typical values)
performance | numerical value | unit | standard test |
Tensile Strength | 65 | MPa | GB/T2567 |
Tensile elastic modulus | 3500 | MPa | GB/T2567 |
Elongation at break | 2.0 | % | GB/T2567 |
Bending strength | 120 | MPa | GB/T2567 |
bending elastic modulus | 3300 | MPa | GB/T2567 |
Impact strength | 12 | KJ/m2 | GB/T2567 |
Heat distortion temperature | 115 | ℃ | GB/T1634 |
Curing conditions: 24 hours at room temperature, 40°C, 60°C, and 80°C.
2 hours
Test conditions: temperature 23±2 ℃, Relative humidity 50±6%
Instructions and attentions
WL-1605C is typically used in conjunction with WL-3814 for the production of low-shrinkage molded plastics. Normally, the ratio of WL-1605C to WL-3814 is 70:30, although adjustments can be made according to specific requirements. Depending on the final product's dimensional demands, 300ppm to 600ppm of p-benzoquinone can be added to the formulation (calculated based on the total amount of resin and low-shrinkage additive).
Storage conditions
1. Before use, the resin should be stored in the original packaging (to avoid opening and damaging the barrel) in a dry room below 25°C.
2. The increase in temperature and exposure to light will significantly shorten the storage period. Avoid direct sunlight and keep away from heat sources during storage.
3. Unsaturated polyester resin liquid containing styrene is flammable and should be stored away from open flames.Please refer to the safety data sheet.
All various data are derived from our in-depth research and extensive practice and are therefore completely trustworthy.However, since the production of products is affected by multiple factors, we are not responsible for the actual performance, effects and effects caused by the above data and the specific application and processing of the products, as well as the resulting direct and indirect losses.Before selecting the above products, users are requested to check and confirm the relevant product quality, performance indicators, safety and other data themselves.At the same time, users should also pay attention to avoid infringing various relevant laws, registered trademarks and patent rights.We are not responsible for this.
Version No.：2021/1.0
Publication date：2021/02
Shandong Wanglin New Materials Co., Ltd.
Address: Chemical Park, Economic Development Zone, Pingyuan County, Dezhou City, Shandong Province
T：(86)15863477700
E：scott.cui@wl-upr.com