All That You Need to Know About Carbon Fibre Products

Carbon fibres comprise of the carbon atoms and are 5-10 micrometers in diameter. Carbon fibre properties, such as superior tensile strength, high stiffness, low weight, superior chemical resistance, minimum thermal expansion and tolerance to high temperatures make these fibres useful in the motorsports, civil engineering, aerospace and the military industry.

Carbon fibres in combination with other materials, such as glass, plastic, graphite and epoxy resin, impart higher strength to the fibres and make them more resistant to heat so that they find wide application in industries like aerospace, construction etc.

A wide array of items are crafted from carbon fiber composites such as business cards, coasters, scuba diving equipment, steering wheel, battery boxes, air-box, diffuser, spoiler, FIA certified seats, carbon fibre sheets etc.

Here is a list of popular items made from carbon fibres.

  • Business Cards: You can make use of carbon fibres to make superior quality business cards. The manufacturing of these cards involves superior CNC cutting, vacuum infusion of epoxy resin as well as leading-edge overprinting technology.

  • Coasters: Coasters are an essential table accessory that you use to rest your beverage glass on. You use them to protect your tabletop from water stain. They can be crafted from a wide array of materials, such as wood, plastic or even carbon fibres. Carbon fibre items are preferred for their light weight and low density. Coasters crafted from this material would be sturdy and of unmatched quality.

  • Scuba Diving Equipment: Carbon fibre is widely used for making scuba diving equipment, such as Kevlar/aramid fins, fins, diving backplates, adapter etc. Carbon fibre is chosen for making scuba diving equipment for its high strength and light weight.

If you are interested in high-quality products crafted from carbon fibre, the best place to look for it is DexCraft. The Company is a leading manufacturer and supplier of superior quality carbon fibre products made from carbon fibres in combination with epoxy resins, glass, aramid filaments etc. Purchase unsurpassed quality of carbon fiber sheets from this company for its unrivalled quality, guarantee, high aesthetics, brilliant workmanship and superb after-sale customer service.

Storage & Handling of Prepregs

Composite materials are now widely used in various industries because of the advantages they have over ordinary materials. For instance, they can provide desired high strength of material in aerospace, without adding unnecessarily weight in component.

Prepreg composites should be stored in a cool and dry or in a refrigerator. You also need to allow the prepreg to reach room temperature on removing from the refrigerator, in order to prevent condensation. Prepreg composites can stay for up to 12 months when stored at a temperature of – 18 ºC. The matrix determines the tack life at 23 ºC. Storage and handling are two important factors you need to consider when buying autoclave composites and prepreg composites.

However, prepegs have a low risk when being handled due to the below reasons:

1. Both sides are covered by protective coverings and the coverings are not to be removed until assembly lay-up. In addition, the prepeg composites need to be cut into the desired shapes before the coverings are removed, so no handling will be necessary before that.

2. They do not have any loose fibrous dust. They are also splash-free, do not leak or spill. This is in comparison to the wet lay-up methods involved in the manufacture of fiber reinforced composites. In this case of fiber reinforced composites, the dry fiber and liquid resin are used.

3. They are volatile and have a moderate/low tack level at normal room temperature.

Protecting yourself :-

It is important to learn how to handle autoclave composites and prepreg composites, particularly how to protect your hands and body. You should wear gloves and ensure arms are covered to avoid any skin contact with prepegs. Otherwise, touching them repeatedly touch prepreg with unprotected hands might lead to allergic reactions.

There are also fibrous materials that result from machining cured products and you should be careful when dealing with this because inhaling it can be dangerous. You should ensure to install positive dust extraction and collection systems at the cutting zone. You should also prevent dust formation and ignition sources when machining cured products as thus can cause fire. Dust from products that have carbon fiber parts is a good conductor of electricity.

Methods Applied in Carbon Fiber Fabrication

Carbon fiber fabrication is a great method for constructing or making weightsensitive components and products because the material has a very competitive low-weight characteristic. Carbon fiber also adds strength to these components and products like carbon fiber business cards. Carbon fiber fabrication is also employed in production of spas, bathtubs, shower stalls, truck cabs and many other common home and industrial-use products.

Carbon fiber fabrication begins with the selection of the fabrication technique. Selection depends upon part design, speed, cost and end-use or application of the item. Below are some of the methods to consider:

  1. Hand layup is the most basic of all fabrication methods. In this method, layers of dry fabrics or carbon fiber sheets are placed on a tool to make a laminate stack. Then resin is applied on the layers through resin infusion process. The alternative is to lay on the tool, a fabric that has been pre-impregnated with resin.

Wet layup process involves compacting the layers by placing plastic sheet materials on top (called vacuum-bagging) or by hand using rollers.

Curing in this method is achieved in a number of ways. The most basic form of curing involves adding a catalyst or hardener additive into the resin and occurs at room temperature. Debulking not only consolidates the layup but also removes air trapped in the resin matrix that would otherwise create undesirable voids (air pockets) in the laminate that could weaken the composite.

Increasing temperature quickens curing. A vacuum, oven and pressure can be used to add heat during the curing process. A vacuum is initiated before curing using a vacuum bag placed on top of the whole layup and attached to the tool. This method is advantageous as it can remove gases that result when the matrix is undergoing through chemical curing processes, thus consolidating and strengthening the materials further.

Pressure curing in fabrication of carbon fiber manufacturing is done by way of an autoclave. Modern systems use computer methods to monitor and control the temperature, vacuum, pressure and inert atmosphere in the autoclave. The autoclave is very expensive and many who own it cure several parts simultaneously. Heat curing involves raising the temperature for some time then lowering it to room temperature. Other methods include Electron-beam (E-beam) curing.

2. Open molding: This is a low cost method of making fiberglass composite products. The technique is used to manufacture a wide range of components, including large, noncomplex shapes such as spas, bathtubs, shower stalls truck cabs. There are two options in this case, namely, hand layup and sprayup.

In hand layup, workers compact laminates by hand using rollers. It is being replaced by high-speed production methods such as hybrid injection. In the sprayup carbon fiber fabrication technique, the mold is treated with a mold release, and then gel coat is sprayed to the mold and the mold is ready for fabrication to start.

3. Hybrid injection molding or thermomolding: In high volume molding, industries use compression molding, injection molding, and hybrid injection molding or thermomolding. In injection molding process, chopped glass fiber is forced through a heated barrel using a ram or screw-type plunger. This method can produce as many as 2,000 small parts per hour.

Hybrid injection molding or thermomolding involves mixing of plastics and composites processes. An example is the SpriForm. This method of carbon fiber fabrication involves using both compression and injection molding in a single 90-second fabrication process. It has been used in automotive industry to make a tailored composite seat back that is 40 to 50 percent lighter than its steel version.

Filament winding is also used to make carbon fiber sheets. It uses a long, cylindrical tool called a mandrel suspended in between two end support and used to place place fiber onto the tool in a predetermined manner. Computer-controlled filament-winding processes are available today.

Other highspeed production methods includes tube rolling method used to produce finite-length tubes and rods. Tube rolling involves cutting the material into very fine pieces, laying them on a flat surface, and then rolling a mandrel over the pieces at high pressure and heat.

Pultrusion involves pulling the reinforcing fiber (usually roving, tow or continuous mat) through a heated resin bath and making the specific shape or carbon fiber sheet as needed.

Other methods are centrifugal casting, automated tape laying (ATL) and automated fiber placement (AFP).

Craft A New Experience With DexCraft

Durability is Reliability

Durability is the new concept of reliability. Dexcraft has successfully managed to absorb the trust of its customers by providing the desired quality products at the most reasonable rates. Over a span of 7 years, the company has been earning respect and recognition for its flawless quality provided. The industries, these days completely rely on the long-lasting products used as their raw material. The epoxy resin made products include a whole range of products like orthopedic surgical needs, home decors, rehabilitation, carbon fiber business cards etc.

Prepreg Composites – An Invitation to Success

Needless to say we are a part of society which judges us every now and then and surely gives importance to presentation skills. If you are aiming at advertising or expanding your business grounds, it is mandatory that you present your business cards in the most appropriate and attractive way. This is the time when Dexcraft comes to your help. The carbon fiber business cards are 100 % reliable carbon based durable material. The design specifications are as stated by the customers. Care is taken that the card is not too gaudy and shows up professionalism so that people just don’t dump it once Dexcraft clients present their identity in the piece of paper. The size is a standard one and may be mechanized as per the requirements.

Carbon Fiber Sheets- Let Quality Do The Talking

The high quality gloss fiber manufactured by Dexcraft not only guarantees its 100% in quality, but also achieves consumer satisfaction for timely shipment of goods. The thickness is of much importance and it ranges from 0.5mm to 7mm. The open invitation to accept consumer suggestions has helped them to reach over to a wider range of the public where they incorporate the consumer requirement in the Carbon Fiber Sheets. Having the assistance of intellectual, technical knowledge, they resort to the latest technologies which give them quality products in the least amount of time.

Stand A Part Of Dexcraft & Stand Apart From Regulars!

What makes Dexcraft so special that customers rely on them for perfection? Coming to the foremost important concept, that is punctuality and preciseness. They understand that the consumers they serve are not small scale ones and that their production of goods will come to a standstill if they do not get the desired goods on time. Dexcraft believes in establishing long term contracts with the consumers so that it’s a comfortable situation to both the contractor and the consumer. The expertise of the people working at Dexcraft are an added benefit and guide the consumers as to which good suits them the best. Expert supervision gives the consumers an assurance that no compromise is done on the quality of products. Preparedness for any large scale project is an added advantage. Dexcraft are always on their toes to take up any assignments that concerns the above stated articles like Carbon Fiber Sheets or Carbon fiber business cards. Surely the dedication towards consumer satisfaction will take them a long way.