This Unsupported Resin film is made to be placed on the surface of the molds to give a resin rich surface for a class A high gloss finish on your parts. Having a resin rich surface will give you a better looking part cosmetically as well as give you an opportunity to further sand/finish your part without sanding into the fibers and ruining the structural integrity of the parts. This epoxy is the same epoxy that is used in our other 250° F cure prepregs so you have a complete system that is compatible together. To use this material just cut to shape, pull off the plastic liner, place in mold, place layers of prepreg re-enforcement down, vacuum bag the material down and ramp up the heat to 250° F for one hour and your part is done.
This product is 50" wide and sold in 10 yard segments. We do not sell this by the cut yard because it is stored in a freezer and must stay frozen to comply with shelf life requirements.
F-2442-PREG-145gsm is an epoxy resin system designed to give an initial cure at low temperatures or snap cure at high temperatures with enhanced toughness, honeycomb bondability and higher service temperature, giving greater flexibility in component manufacture. It can be supplied on a variety of fabrics in UD format to meet your cost and manufacturing requirements.
Key Features & Benefits
• Cure temperature from 150°F to 250°F
• Service temperature up to 275°F after post cure
• Low CTE and shrinkage
• Work life at 70°C: 21 days
• Storage life at 0°F: 12 months
• Very low VOC content – no added solvents during manufacture
Storage & Out Life
This material should be kept frozen at 0°F. 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.
Cure Cycles & Performances
|Cure||Initial Min Cure||Tg|
• 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 5°F per minute during initial cure.
Ramp rates must not exceed 1°F per minute during post cure (free standing).
Volatile content < 1.0%
Fibre volume fraction 50 to 60%
Voidage (autoclave cure) < 1.0%
Application: Remove material from cold storage at least 20 hours prior to use so the material stabilizes at room temp. Keep the material wrapped to prevent moisture from condensing on the adhesive. Cut prepreg to the correct size, remove poly film from one side and apply to part or mold. Then remove the backing paper. Now apply your desired layers of reinforcement materials. When your lay-up is finished, you need to cure the material in a vacuum bag placed inside an oven or autoclave. Apply at least 10psi of pressure and 250° F for one hour.
Health and Safety
This material contains epoxy resin which can cause allergic reactions with skin contact and must avoid repeated and prolonged skin contact.
Please refer to the product Safety Data Sheet before using this material. 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 5°F/min during initial cure and 1°F/min during post cure.
Shipping: This material should be shipped expedited airmail. Due to a short shelf life at room temp we suggest shipping this material via an expedited service such as UPS Overnight, 2-day or 3-day. These are guaranteed services. If these are chosen, we will ship the materials in the beginning of the week to ensure they do not sit in the shipping company warehouse over the weekend. We can send the material with insulation and icepacks at an additional cost (add $25 for ice packs and insulation). It is suggested that you ship with ice packs and 2-day airmail at a minimum. If you plan to use material within days of arrival or are OK with loosing days of shelf life, you can select any shipping method you would like, however if our minimum suggested shipping method is not chosen, we will not be held responsible for issues with material.
Custom Prepreg Options
We can have almost any of our fabrics pre-impregnated for you. Please email us for more details. We have systems that can cure at various temps from 200° F to 350° F. We can do a max width of 60". Lead times are usually 2-3 weeks for custom prepreg. We can do single side or double sided prepreg, vary the resin % in the cloth and vary the tack level of the material.