Product Description
WL-5023C is an isophthalic unsaturated polyester resin specially used for pultrusion. The resin has the properties of high reactivity, good wettability, high rigidity, high mechanical strength, high temperature resistance, etc.
Application
WL-5023C is an isophthalic unsaturated polyester resin specially used for pultrusion. The resin has the properties of high reactivity, good wettability, high rigidity, high mechanical strength, high temperature resistance, etc.
Properties
performance | Parameter | unit | standard test |
Exterior | Light yellow and transparent | - | GB/T8237 |
Viscosity 25℃ | 700-800 | mPa.s | GB/T7193 |
Acid value | 16-24 | mgKOH/g | GB/T2895 |
solid content | 61-67 | % | GB/T7193 |
25℃ gel time | 20-30 | minutes | GB/T7193 |
Note: 25℃ gel time: add 1.0g 1% cobalt and 1.5g M50 (AKZO-Nobel) to 100g resin.
Liquid Resin Properties (Typical Values)
performance | numerical value | unit | standard test |
Storage period (uninitiated, dark place), 20℃ | 3 | month | - |
Resin cast body properties (typical values)
performance | Parameter | unit | standard test |
Tensile Strength | 80 | MPa | GB/T2567 |
Tensile elastic modulus | 3500 | MPa | GB/T2567 |
Elongation at break | 3.0 | % | GB/T2567 |
Bending strength | 130 | MPa | GB/T2567 |
bending elastic modulus | 4000 | MPa | GB/T2567 |
Impact strength | 9 | KJ/m2 | GB/T2567 |
Heat distortion temperature | 88 | ℃ | GB/T1634 |
Curing conditions: 24 hours at room temperature, 2 hours each at 40°C, 60°C, and 80°C.
Test conditions: temperature 23±2℃, Relative humidity 50±6%
Instructions and attentions
1. When WL-5023C resin is used in the pultrusion process, the curing system should be selected according to its specific equipment, products, process temperature, pultrusion speed and other factors. Generally recommended: BPO 0.5%~2.0%; TBPB 0.5~1.5%.
2. The volume shrinkage rate of unsaturated polyester resin is very large. When pulling large diameter rods, it is recommended to wrap with felt; when pulling thick profiles, it is recommended to use low shrinkage additives such as 3814 and 3892 provided by Wanglin New Materials. Some low shrinkage additives are not compatible with WL-5023C, and there will be stratification when used, but this is a normal phenomenon. When using, be sure to add it immediately and stir it evenly.
3. When using, be sure to control the water content of materials such as glass fiber, filler, pigment paste, etc., and pay attention to the compatibility of pigment paste with unsaturated polyester resin.
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 Material Co.,Ltd.
Add：Chemical Industry Park,Economic Development Zone,Ping yuan County,De zhou City, Shandong Province
T：(86)15863477700
E：scott.cui@wl-upr.com