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Overview

ALITA 191TP(N) General Purpose Unsaturated Polyester Resin

CategoryHand Lay-up ResinCodeALITA 191TP(N)

Overview

ALITA 191TP(N) is a pre-accelerated, thixotropic, general-purpose unsaturated polyester resin. It features a moderate liquid viscosity, excellent wetting and impregnation capability for glass fibers, and guarantees robust mechanical strength alongside high elongation at break properties for final fiber-reinforced plastic (FRP) products.

  • Applications: Suitable for the hand lay-up molding process of various general-purpose fiberglass-reinforced composite structures and industrial items.
  • Formulation Note: ALITA 191TP represents the pre-waxed formulation variant, whereas ALITA 191TPN represents the non-waxed formulation variant.

Specifications

PropertySpecification RangeUnitTest Method
Appearance & ColorGreen Liquid--GB/T 8237.6.1.1
Viscosity (@ 25°C)0.40 - 0.60Pa·sRS-V007
Thixotropic Index≥ 1.5--RS-V007
Gel Time (@ 25°C)15.0 - 25.0minGB/T 7193.4.6
Note: Gel Time Test Conditions: 25°C ambient temperature; Resin: 50g; Curing Agent (Butanox M-50): 1.0g.

Properties

PropertyPure Resin CastingFRP LaminateUnitTest Method
Tensile Strength63290MPaGB/T 2567-2008 / GB/T 1447-2005
Elongation at Break3.5--%GB/T 2567-2008
Flexural Strength115360MPaGB/T 2567-2008 / GB/T 1449-2005
Impact Strength10.3238kJ/m²GB/T 2567-2008 / GB/T 1448-2005
Heat Distortion Temp. (HDT)68--GB/T 1634-2004
Barcol Hardness4258--GB/T 3854-2005
Sample Preparation & Post-Curing:
1. Pure Resin Cast: Cured at 25°C with 1.0% Cobalt accelerator (0.8% Co/oct) and 1.5% Curing Agent (Butanox M-50). Post-curing: RT × 24h + 60°C × 3h + 80°C × 2h.
2. FRP Laminate Post-curing: RT × 24h + 60°C × 3h + 110°C × 2h.

Usage Instructions

  • Thixotropic Agent Settlement: During storage, thixotropic agents may settle. Stir the drum thoroughly before use.
  • Gel Time Adjustments: Under high temperature, gel time contracts. Never reduce the hardener ratio below recommended safety levels; use specialized commercial retarders/inhibitors instead.
  • Surface Tack: High humidity or temperatures can cause air-inhibition. Incorporating a proper amount of specialized wax solution is recommended to prevent surface stickiness.

Storage & Handling

  • Storage: Containers must be tightly sealed and stored indoors in a cool, dry, dark warehouse below 25°C. Keep away from heat sources and open flames. The shelf life is 3 months.
  • Logistics: Transport must strictly follow dangerous chemical regulations.