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SHD Composites LTC250-2XL

Shanghai Sunwise Chemical LTC250-2XL Prepreg is designed to cure at low temperatures whilst giving you increased outlife over other low-cure systems and great flexibility in component manufacture. It is a toughened epoxy resin system that can be supplied on a variety of fabrics to meet your cost and manufacturing requirements.

Polymer Name: Epoxy Resins & Compounds

Functions: Prepreg

Processing Methods: Prepreg Processing

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Composite Materials Functions

Features & Benefits

Labeling Claims
Key Features
  • Cure temperature from 50°C to 75°C
  • Service temperature up to 125°C after post cure
  • Low CTE and shrinkage
  • Work life at 20°C: 5 days
  • Storage life at -18°C: 12 months
  • Very low VOC content – no added solvents during manufacture

Applications & Uses

Composites Processing Methods
Typical Applications

General purpose – Visual

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Cure Temperature50 - 75°C
Cure Time40 - 4hrs,mins
Outlife5months
Tg Onset130
Tg Peak144
Service Temperature125°C

Technical Details & Test Data

Cure Cycles and Performances
  • Recommended Initial cure: 60°C for 14h, at a ramp rate of 1.0°C/min
  • Recommended Post cure: 120°C for 1h, at a ramp rate of 1.0°C/min
Cure Initial Min Cure Tg
50°C (minimum) 40 hours 55°C
60°C 14 hours 65°C
65°C 8 hours 70°C
75°C (maximum) 4 hours 80°C
120°C Post Cure 1 hours 130°C
  • Curing Schedule is meant to be a guide only and is subject to local conditions.
  • To avoid exotherm particular care must be taken with thick laminates.

            Ramp rates must not exceed 3.0°C per minute during initial cure.

            Ramp rates must not exceed 0.3°C per minute during post cure (free standing).

Safety & Health

Health And Safety

This material contains epoxy resin which can cause allergic reactions with skin contact and must avoid repeated and prolonged skin contact.

The following precautions must be taken when using epoxy resin prepregs:

  • Overalls must be worn.
  • Impervious gloves must be worn.
  • Curing schedule is meant to be as a guide only and is subject to local conditions.
  • To avoid exotherm, particular care must be taken with thick laminates.
  • Ramp rates must not exceed 3.0°C/min during initial cure and 0.3°C/min during post cure.

Packaging & Availability

Packaging Type

Storage & Handling

Storage and Out Life

This material should be kept frozen at -18°C. It must be kept sealed in a polythene bag which must not be opened until fully thawed to room temperature. If the material is not fully used, then the material must be resealed in the polythene bag to prevent moisture absorption.