Unsaturated polyester resins are used for pultrusion are basically o-phenylene and m-phenylene types. Beta benzene type resin has better mechanical properties, toughness, heat resistance and corrosion resistance. At present, more domestic use is o-phenylene type, pultrusion moulding process requires the use of resin viscosity is low, the main use of unsaturated polyester resin and epoxy resin or modified epoxy resin. Unsaturated polyester resin used for pultrusion is basically o-phenylene and m-phenylene type, m-phenylene type resin has better mechanical properties, toughness, heat resistance and corrosion resistance. However, the actual production process found in the existing technology of the resin material still can not fully meet the requirements of the pultrusion moulding process, for example: heat resistance there is room for improvement.
681 is orthophthalic unsaturated polyester resin, stable performance, excellent high filler loading. Pultruded rod is mainly used for bed nets, spray bar and tool handles, profiles and etc. Good impregnated of glass fiber reinforcement, fast pulling speed. Pultruded rod is mainly used for bed nets, spray bar and tool handles and other relevant.
| Technical Index for Liquid Resin | |||
| Item | Unit | Value | Standard |
| Appearance | Transparent Viscous liquid | ||
| Acid Value | mgKOH/g | 16-22 | GB2895 |
| Viscosity(25℃) | Mpa.S | 420-680 | GB7193 |
| Gel Time | min | 6-10 | GB7193 |
| Non-Volatile | % | 63-69 | GB7193 |
| Thermal Stability(80℃) | h | ≥24 | GB7193 |
| Note: Gel Time is 25°C; in air bath; 0.5 ml cobalt isocaprylate solution and 0.5ml MEKP solution were added into 50 g resin | |||
Good impregnated of glass fiber reinforcement, fast pulling speed. Pultruded rod is mainly used for bed nets, spray bar and tool handles and other relevant products.
| Specification for Physical Properties | |||
| Item | Unit | Value | Standard |
| Barcol Hardness ≥ | Barcol | 38 | GB3854 |
| Tensile Strength ≥ | Mpa | 55 | GB2567 |
| Elongation at break ≥ | % | 5.0 | GB2567 |
| Flexural Strength ≥ | Mpa | 73 | GB2567 |
| Impact strength ≥ | KJ/m2 | 10 | GB2567 |
| Heat deflection temperature(H.D.T) ≥ | ℃ | 70 | GB1634.2 |
| Note: Environmental Temperature for Experiment: 23±2°C; relative humidity: 50±5% | |||
Shelf life is 4-6 months blow 25 ℃.Avoiding direct strong sun and far away from heat
resourceResin is flammable, so keep it away from obvious fire.