SHD Composites MTC275

Shanghai Sunwise Chemical MTC275 is an epoxy resin system designed to give excellent clarity and surface finish out of autoclave. It is a toughened epoxy resin system designed for component manufacturing that can be supplied on a variety of fabrics and in UD format to meet your cost and manufacturing requirements.

Polymer Name: Epoxy Resins & Compounds

Functions: Prepreg

Processing Methods: Out of Autoclave Prepreg, Prepreg Processing

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Labeling Claims
Key Features
  • Cure temperature from 85°C to 120°C  Service temperature up to 115°C
  • Low CTE and shrinkage
  • Work life at 20°C: 30 days
  • Storage life at -18°C: 12 months
  • Very low VOC content – no added solvents during manufacture
  • Excellent surface finish out of autoclave

Applications & Uses

Composites Processing Methods
Typical Applications

General purpose – Visual

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Cure Temperature85 - 120°C
Outlife30months
Tg Onset121
Tg Peak135
Service Temperature115°C

Technical Details & Test Data

Cure Cycles and Performances
  • Recommended Initial cure:

           1 st dwell at 85°C for 1h, at a ramp rate of 1°C/min

           2 nd dwell at 120°C for 1h, at a ramp rate of 2°C/min

  • The use of solid release film is recommended.
Cure Duration Tg
85°C (minimum) 16 hours 90°C
90°C 8 hours 95°C
100°C 4 hours 105°C
110°C 2 hours 115°C
120°C (maximum) 1 hours 120°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.