English
Español
tiếng việt
русский
High reactivity with standard peroxide initiators for rapid gel time control.
Excellent mechanical strength and dimensional stability in cured laminates.
Low viscosity (1,200–1,600 cP at 25°C) enabling superior fiber wet-out and processability.
Good weather resistance and UV stability for outdoor composite applications.
Compatible with common fillers, pigments, and flame-retardant additives.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Marine hulls, decks, and structural components requiring corrosion resistance.
Wind turbine blade shells and nacelle covers.
Automotive body panels and under-hood components.
Architectural cladding and translucent roofing panels.
| Chemical Type | Orthophthalic unsaturated polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25°C) | 1,200–1,600 cP |
| Gel Time (with 1.0% MEKP, 25°C) | 12–18 minutes |
| Solid Content | ≈ 99.5% |
| Density (25°C) | 1.12–1.14 g/cm³ |
| Reactive Diluent | Styrene (35–40% w/w) |
Q1: What is the primary application of TB-550 in polyester systems?
A: TB-550 is a reactive liquid polyester resin designed primarily as a viscosity modifier and toughening agent for unsaturated polyester (UPE) resins used in composites, gel coats, and casting applications. It enhances flexibility and impact resistance without significantly compromising cure speed or surface hardness.
Q2: Is TB-550 compatible with standard free-radical curing systems?
A: Yes, TB-550 is fully compatible with conventional peroxide-initiated free-radical polymerization systems, including MEKP and BPO catalysts. It does not inhibit cure kinetics under typical processing conditions and integrates homogeneously into standard UPE formulations.
Q3: How does TB-550 affect the mechanical properties of cured laminates?
A: Incorporation of TB-550 generally improves fracture toughness and elongation at break while maintaining acceptable tensile and flexural strength. The extent of improvement depends on loading level and base resin composition, but noticeable gains in impact resistance are consistently observed in reinforced laminates.
Q4: Can TB-550 be used in marine-grade gel coat formulations?
A: Yes, TB-550 is suitable for high-performance gel coat systems where enhanced crack resistance and reduced microcracking are required. It contributes to improved durability under thermal cycling and mechanical stress, supporting long-term integrity in demanding marine environments.
Q5: What storage conditions are recommended for optimal shelf life?
A: Store TB-550 in tightly sealed containers at temperatures between 10 °C and 30 °C, away from direct sunlight and strong oxidizing agents. Under these conditions, it maintains consistent reactivity and physical properties for up to 12 months from the date of manufacture.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
