About Carbon Fiber Sheet

Carbon fibers are composed of a diameter of 5 to 10 microns fiber bundles, which are made up of a long and dense chain of carbon atoms in a microscopic crystal structure. These fibers are very hard, strong, and lightweight, which are widely used in various applications that require excellent strength, rigidity and low weight.

  • High strength and lightweightCarbon fiber is one of the strongest and lightest composite materials, 30-40% lighter than aluminum, and the strength is 5 times higher than steel with the same weight, which makes it very popular in many industries.
  • High tensile strengthCarbon fiber has the highest strength among all commercial reinforcing fibers, and it is very hard to stretch or bend.
  • Excellent durabilityCompared with metal, carbon fiber has excellent fatigue properties, which means component parts made of carbon fiber will not be abraded quickly under the pressure of sustained use.
  • Low thermal expansionCompared with steel, aluminum and other materials, carbon fiber will not expand or contract when the temperature changes.
  • AppearanceCarbon fiber has a particularly beautiful appearance that makes it widely used in many industries.
  • Superior corrosion resistance and wear resistanceCarbon fiber has superior corrosion resistance and wear resistance, ensuring its long service life.
  • Good conductivityCarbon fiber composite materials with good conductivity are highly efficient conductors of electricity.
  • RadiolucencyCarbon fibers are radiolucent, invisible in X-rays, practical value in medical equipment and facilities.

"3k" means that each fiber bundle of carbon fiber fabric is composed of 3000 individual carbon filaments. A bigger number (6k, 12k, etc.) means that the carbon fiber fabric has a thicker fiber bundle, which constitutes heavy fabric.

  • Twill weavingis the most commonly used method, having diagonal grain with a certain angle in the configuration and direction of the fiber bundle. There is no fiber bundle in the grain’s direction, but during the warp and weft weaving process, the warp or weft fiber bundle skips two weft or warp fibers to weave. That means, the weaving frequency of the fiber bundle up and down decreased, and the floating length of the fiber bundle increased, simultaneously, the two adjacent fiber bundles are staggered by one weaving position, producing the diagonal grain, the characteristic of twill weave fabric. In addition, it has a strong third dimension of appearance, a more uniform strength, and is suitable for production with higher requirements, such as automobile products, sports equipment, etc.
  • Plain weavingis the second most widely used among fabrics, characterized by the regular interweaving of warp and weft yarns. That is to say, the warp and weft yarns are staggered every other yarn, so there are the most interlacing points that make the fabric firm, wear-resistant, stiff, smooth, and lightweight, except less elastic. The plain weave fabric has good air permeability, and the surface is even and uniform, with the same two sides. Besides, the fiber bundle is always in a state of up and down, with more fiber bending points, and the elongation rate is higher during the stretching process.
  • Unidirectional weavingUnidirectional carbon fiber cloth refers to a large number of carbon fiber filaments in one direction (usually the warp direction), and a small amount generally in the other direction, which the whole strength is in the same direction. Normally for applications where all force on parts are in one direction.

Gram weight, gram per square meter (GSM), refers to the weight of one square meter of fabric. For example, a piece of fabric weighing 400 grams means 1 square meter weighs 400 grams, and 200 grams weight is equal to 200 grams per square meter.

You can cut the fabric with a good pair of scissors, which should be very sharp, or if you want lower wear, electric scissors would be a better choice.

About Carbon Fiber Prepreg

Carbon fiber prepreg is made of spreading carbon fiber tows (or carbon fiber woven cloth), which combine with the resin pre-coated on release paper under the action of pressure and temperature, after cooling, laminating, winding, and other craft, to process a semi-cured prepreg fabric, also called carbon fiber prepreg, which has to be stored at a low temperature, and be cured to form a composite product by heating and pressing on the basis of the process.

Our prepregs are all made-to-order, thereby ensuring customers receive fresh products with the longest lifespan, which should be stored in a sealed damp-proof bag and in a suitable refrigerator at the optimum and continuous temperature of -18°C until use, in order to maintain the longest service life and initial stickiness from the manufacture date. Besides, the freezing storage life of our prepreg is at least 12 months, the period of time that the prepreg is stored at a continuous temperature of -18°C, called the freezing storage life.
If there is no refrigerator, it is suggested that keep it in a refrigerator at 0°C ~ 5°C in reserve. However, at an ambient temperature of 23°C, the prepreg’s lifespan is usually about 3 to 8 weeks, depending on the specific prepreg grade and the temperature changes.

About FRP

The pultruded profile is a high-strength and light-weight reinforced composite material, combining a fiber-reinforced material and a thermosetting resin matrix. Fiber-reinforced materials have strength and rigidity, and the resin matrix supports the fibers and protects them from chemicals and ultra-violet radiation.
Although a range of fiber types and matrix resins can be both applied to producing composites, mostly using glass fibers (or polyester resins), carbon fibers (or vinyl ester resins).

  • The density of lightweight pultruded profile is lower than steel by 25%, and reinforced concrete by 10% to 20%, which is known as convenient to transport and install.
  • Corrosion-resistant pultruded profiles will not degrade due to snow, ice, salt, chemicals, and other factors.
  • Flame retardant We design and produce composite pultruded profiles that meet the requirements of different flame retardant standards depending on customer demands.
  • Flexible design Pultruded profile is an engineering material that has strong and flexible in design to optimize structural characteristics and meet the needs of the special load. requirements.
  • The service life of pultruded profiles is approximately 75 years, during which there is no need to maintain. In contrast, reinforced concrete surfaces usually begin to degrade in 15 to 20 years, and could be exposed to chemicals or air earlier.
  • On account of long service life, no maintenance costs, pultruded profiles’ costs are ultimately lower than traditional materials.

About Halogen-free Flame Retardant

The European Union (EU) has recently prohibited the use of halogenated flame retardants in plastic enclosures and stands of electronic displays and introduces several new labelling requirements for some hazardous substances. The new regulation will take effect starting March 1, 2021.

  • Endocrine and thyroid disruption.
  • Impacts to the immune system.
  • Reproductive toxicity.
  • Cancer.
  • Adverse effects on fetal and child development.
  • Neurologic function.

When a plastic containing halogens burns, these halogens are released from the product and get into the breathing air. The combination with water produces an acid that is toxic to humans. Halogen-free is therefore particularly important if the user has to pay particular attention to the danger posed by a potential fire.

These mineral flame retardants are non-toxic and work by decomposing endothermically. This means that at a certain temperature, the compounds fall apart thereby adsorbing heat and releasing water vapor. The oxides that are formed results in a protective layer that provides a smoke suppressing effect.

About PTFE

Teflon is a brand name for a synthetic chemical used to coat cookware. There are concerns that chemicals once used in the manufacturing process of Teflon could potentially increase cancer risk. Those chemicals have not been used in Teflon products since 2013. Today's Teflon is considered to be safe cookware.

PTFE has one of the lowest coefficients of friction of any solid material. It’s abrasion resistance is adaptable to demanding environments by means of inorganic fillers, such as glass fibre, carbon and graphite. PTFE is chemically pure and inert, this provides an excellent anti-stick, non-wetting contact surface and PTFE retains it’s excellent properties even under cryogenic temperatures.

A fluoropolymer is a polymer that is made up of monomers that contain fluorine atoms. There are many types but the principal fluoropolymers used in the coatings that we apply are PTFE (polytetrafluoroethylene), FEP (fluorinated ethylene propylene) and PFA (perfluoralkoxy).

PTFE coatings can withstand maximum operating temperatures of 260⁰c and intermittent exposure (up to 30 minutes) of 285⁰c. PFA (perfluoralkoxy) has similar operating temperatures but FEP (fluorinated ethylene propylene) has a maximum operating temperature of 205⁰c.

Minimum operating temperatures of PTFE, PFA and FEP coatings are well into the cryogenic range at around -195⁰c.

PTFE is a synthetic material that most automotive technicians will have heard about, not just because it is often associated with items of non?stick kitchenware.

The characteristics of PTFE coatings make it suitable for use in the construction of timing belts.

Its high resistance to water, heat, and corrosion by chemicals are especially useful. PTFE also possesses very low frictional properties, more usually expressed as a low ‘frictional coefficient’. As a result, vehicle manufacturers often specify the use of PTFE in timing belts designed as OE fitment (e.g. VAG TDI engines). And in the aftermarket too, drive system overhauls involving belts made with PTFE have become more and more common.

There are performance benefits. With increasingly high loads and average engine operating temperatures rising beyond 120°C, the need for timing belts with improved durability is increasing and PTFE plays an important role in the performance of modern drive systems. Adding a PTFE coating to the fabric cover of the belt’s toothed side and/or backside reduces friction and abrasion, resulting in improved wear resistance. Another major benefit is less noise from the drive.

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