Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Chang Chun ETERSET 2731T Unsaturated Polyester Resin

ChangChun ETERSET 2731T is a high-performance unsaturated polyester resin from ChangChun’s ETERSET series, engineered for superior mechanical strength, chemical resistance and fast room-temperature curing. Widely used in FRP tanks, pipes and marine composites, it offers excellent flow, low exotherm and reliable gel-time control—ideal for hand lay-up and spray-up processes.
  • chang chun eterset 2731t unsaturated polyester resin_043165a4
  • chang chun eterset 2731t unsaturated polyester resin_043165a4

Features Of Chang Chun ETERSET 2731T Unsaturated Polyester Resin

  1. High reactivity with standard peroxide initiators, enabling fast gel time and efficient production cycles.

  2. Excellent mechanical strength and dimensional stability in cured laminates and molded parts.

  3. Good resistance to water, weak acids, and alkaline environments after full curing.

  4. Low viscosity for superior fiber wet-out and ease of processing in spray-up, hand lay-up, and filament winding.

  5. Consistent batch-to-batch quality ensured by Chang Chun’s ISO-certified manufacturing control system.

Typical Applications Of Chang Chun ETERSET 2731T Unsaturated Polyester Resin

  1. Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.

  2. Marine hulls, decks, and structural components requiring corrosion resistance.

  3. Automotive body panels and under-hood composite parts.

  4. Industrial grating, ductwork, and corrosion-resistant piping systems.

  5. Wind turbine blade root sections and nacelle housings.

Specifications Of Chang Chun ETERSET 2731T Unsaturated Polyester Resin

Chemical TypeOrthophthalic unsaturated polyester resin
Product FormLiquid, ready-to-use
AppearanceClear to pale yellow, homogeneous liquid
Viscosity (25°C, mPa·s)280–360
Gel Time (100 g, 1.5% MEKP, 25°C, min)12–18
Solid Content (% w/w)99.5–100.0
Density (25°C, g/cm³)1.12–1.16
Primary ApplicationsFRP fabrication via hand lay-up, spray-up, and filament winding


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