Carbon Fiber Composite Sheet

A carbon fiber composite sheet includes a core layer and a surface layer, wherein the surface layer is a carbon fiber polymer material, and the surface layer and the core layer are bonded by a bonding layer. The core layer can be a wood material or a fiberboard; the bonding layer can be a polyester material. The core layer can be completely sealed in the carbon fiber material to prevent the intrusion of moisture and corrosive substances.

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Product Introduction

The production steps are as follows

A layer of release agent is applied on the surface of the tempered glass platform in the mold cavity, and a layer of gel coat is applied on the surface of the release agent.

After curing, the first layer of epoxy resin is evenly applied on the surface of the gel coat, and a layer of carbon fiber composite sheet is laid on the surface of the first layer of epoxy resin.

A pressing plate is placed on the surface of the substrate, the mold is sealed and locked, and the mold is vacuumed. After the structural adhesive is cured, it can be demolded

Multiple grooves are opened on the surface of the polyurethane foam, superglue is applied on the skeleton and the surface of the polyurethane foam, and the substrate is laid on the surface of the superglue.

The third layer of epoxy resin is evenly applied on the surface of the fiber material, and the third layer of epoxy resin is placed on the surface of the fiber material.

The second layer of epoxy resin is evenly applied on the surface of the carbon fiber material, and a layer of basalt fiber material is laid on the surface of the second layer of epoxy resin.

Features of carbon fiber composite sheet

Lightweight (specific gravity is about 1/4 of iron and 2/3 of aluminum)

High rigidity and high strength (strength is 10 times that of iron)

·Can be designed to have heat resistance of 400°C or higher

Can also be used as aircraft material due to its high-impact resistance

·If given high thermal conductivity, it can also be used as a heat-dissipation material

·High degree of design freedom even for complex shapes

·Given flame retardancy, it has also been used in new transportation systems (buses) and other fields

Can also give radio wave shielding properties

Thermosetting Thermoplastic

The resins used in carbon fiber composite materials are divided into two categories, one is thermosetting resins such as epoxy resin, and the other is thermoplastic resins such as polypropylene (PP), and their characteristics are different.

Thermosetting resins appear as low-viscosity monomers on carbon fiber composite sheet. During the molding process, they are polymerized by heat to form polymers. The polymerization reaction takes a certain amount of time, and the molding time is long. However, the autoclave method used to manufacture aircraft structural parts only takes 2 to 4 hours to heat.

Using thermoplastic resins, small-sized parts can be injection molded within 10 seconds, and oversized parts can be stamped within a few minutes. The processing efficiency is also improved and the cost can be reduced. The melt viscosity of thermoplastic resins is relatively high, and large stamping machines are still required to process large-sized parts.

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