Introduction of Graphene

QS got involved in the research and development of graphene 6 years ago and focuses on the study of graphene based special bres. Now, major breakthroughs have been made in research and development of graphene based special bres. And the advent of our graphene based special bres will subversively change safety protection materials and safety protection concepts of the world.

Graphene is a kind of nano-sized carbon materials. And it is the most important and leading edge material that possesses excellent properties beyond imagination.

The structure of Graphene is a two-dimension crystal with one layer of atomic carbon, and its theoretic thickness is only 0.34 nm. The thickness of 20 thousand layers stacking graphene sheets is just equal the diameter of human being' s hair. The theoretical specic surface area of graphene is up to 2630 m 2 g-1

It has outstanding thermal conductivity (~5000 W m -1 K -1 ), as well as high speed electron mobility (~200 000 cm 2 V -1 S -1 ) at room temperature. This is the 3 times and 10 times than that of the pure diamond and copper. Graphene is a superior strong material ever measured in the world. It is noticed that the graphene density is even harder than diamond and about 100-300 times stronger than steel. Its mechanical stress reaches to 130 GPa and the breaking tenacity reaches to 42N/m 2 , while the density is only 2.2 g/cm 3 .

Single layer graphene is completely transparent and the light transmittance reaches to 97%. It is an outstanding current-conducting materials that the electrical resistivity of graphene is 10 -6 Ω·m which is lower than copper and silver in the condition of room temperature. Graphene has very promising applications in eld-eect transistors, lithium ion batteries, fuel cells, molecular sensors, actuators, ultra-capacitors, high performance polymer composites and so on.

The discovery of fullerenes in 1985 and the discovery of carbon nanotubes in 1991 had attracted a great amount of research attention all over the global. Since experimentally discovered in 2004, graphene with unique properties has become one of the most exciting materials today, Professor Andre Geim and his posdoctoral Konstantin Novoselov at the University of Manchester won the Nobel Prize in Physics in 2010 "for groundbreaking experiments regarding the two-dimensional material graphene" .

Special Role & Huge Fission Effect of Graphene in Many Fields

Special Role 1

In recent years, great progress of applications of graphene has been made in many elds all over the world.

Special Role 2

The graphene-based battery yielded an energy density of 600 Wh/kg, which is about a factor of 3 times higher than that of lithium-ion battery for electric vehicles. And the life time is double than that of general lithium-ion battery and the cost is 77% lower than that of lithium-ion battery.

Special Role 3

The graphene solar cell can remarkably increase cell eciency. Recently, polysilicon is the major components of the solar panels, and its photoelectric conversion rate is about 20%, while monocrystalline-based solar panel can reach about 30%. However, in theory the photoelectric conversion eciency of graphene solar cell is 2-3 times higher than the crystalline silicon solar technology. It will thoroughly change the energy structure once graphene solar cell is successfully developed and marketed.

Special Role 4

The graphene-based battery promotes cycles from about 1000 times to more than several 10000 times in mobile phones and decreases the charge time from about 2 hours to 10 minutes. In electric vehicles, this kind of battery can travel about 1000km after once charge. Graphene has played an important role and super powers in the popularization of new energy vehicles (electric vehicles) and the improvement of the eciency of batteries.

Special Role 5

Graphene composites have special properties and eects. For example, only 1% graphene added into polyurethane composite can increase the intensity about 75% and the Young modulus about 120%. And graphene hybrid materials might play a major role in lightweight and tough materials such as paper-like airfoil and super-lightness aircraft materials or body armor in the future.

Special Role 6

The research of graphene in the  microelectronic, optics and biome might highlight the propert graphene which manifest a magica and bring into huge function.

Applications of QS KYORENE Special Fibres

QS has successfully developed a series of graphene based special bres, such as graphene-PET, graphene-PAN and graphene-PVA nanocomposite bres.
After testing, the characteristics of these bres show super and excellent performance. Graphene based special bres can tensile reinforcing bres, cut-resistant and abrasion resistance at the same time, with anti-corrosion, antiaging, antibacterial, antistatic, heat-resistant, ame retardant, anti-ultraviolet and have far infrared properties. And the special products of QS i.e. graphene KYORENE special bres also have a conductive function.
Also, QS has developed by itself the most up-to-date manufacturing machines of graphene, and could produce graphene with the name of KYORENE. The KYORENE graphene not only has an excellent performance but also a low cost which is only twenty percent of the similar products of research institutes of the world. And this paves the way for large-scale and low-cost production, promotion and application of graphene.
In consideration of the unique properties of graphene, QS is the rst company that researches and develops graphene based special bres and pushes applications of graphene in the eld of safety protection.

1. The cut-resistant and heat-resistant gloves which were made from KYORENE Graphene-PET nanocomposite bres have low prime cost. And the prime cost is only 20% of current aramid bres and the European PE gloves on the market and 40% of Chinese PE bre gloves. High performance and low cost graphene bre will fundamentally change the current safety protection areas of cut-resistant gloves, sleeves, and other products.

2. KYORENE Graphene-PET nanocomposite bres not only have antibacterial function but also have sterilization, deodorant function. It could be applied in protective clothing, helmets, protective masks and other products. Also, it can be applied in antibacterial medical bed mattress and sheet, safety shoes and insoles with the performance of anti-friction, permanent antibacterial and deodorant.

3. KYORENE Graphene-PAN nanocomposite bres could replace part of the production of wool blankets and carpets fabrics. It can be used as outdoor fabrics, such as ski jackets, sails, military canvas tents with wear-resistant, antistatic and antibacterial properties. The graphene based bre materials can be used on wigs with the performance of breathable, antibacterial, smooth, anti fracture and easy shaped. And the prime cost is only one third of general wigs.

4. KYORENE Graphene-PVA nanocomposite bre can be widely applied in the elds of water conservancy dam, highway and bridge construction, greatly improving the concrete tensile strength and tensile strain. High strength and high modulus graphene-PVA bre could be used in water conservancy construction, instead of steel as reinforcement strain belts.

5. Also, it is used as a reinforcing material of plastic products for the manufacturing of much safer and lighter anti-riot helmets, radial tire or diagonal tire cord, rubber reinforcing materials, conveyor belt, re hose, braided hose, etc. And the Graphene-PVA nanocomposite bres can be used to make canvas, tarpaulins, conveyor belts, shing nets in the industrial eld. Graphene-PVA namocomposite bres also can be made into a high-performance engineering plastics.

In addition to above KYORENE Graphene based nanocomposite special bres, now QS is developing other high-performance composite bres, such as Graphene-PA nanocomposites bre, Graphene-PU nanocomposites bre and Graphene-PPTA/PMIA nanocomposites bre. The Graphene-PA nanocomposites bre, which is the key research project of QS, could be used for manufacturing high-performance and low-cost automotive air-bag. And the prime cost of air-bag of Graphene-PA nanocomposites is only 20% of the general products. QS also plans to use KYORENE special bres in many military products, which will cut down the cost of them and largely improve the performance of military equipment as well.

It is the rst time that QS releases KYORENE special bres in safety protection elds. In order to realize the revolutionary change of the bre materials of safety products, we hope to cooperate with manufacturers, research institutes and franchisers to develop and market a series of graphene based special bre products on a win-win basis.

QS KYORENE graphene based special bres products are listed below.
Graphene-PET nanocomposite bres (PET: polyester / Polyethylene terephthalate bre)
Graphene-PAN nanocomposite bres (PAN: acrylic / polyacrylonitrile bre)
Graphene-PVA nanocomposite bres (PVA: vinylon / Polyvinyl Alcohol bre)
Graphene-PA nanocomposite bres (PA: chinlon / Polyamide bre)
Graphene-PU nanocomposite bres (PU: spandex / polyurethane bre)
Graphene-PPTA/PMTA nanocomposite bres (PPTA/PMTA: aramid / p-aromatic polyamide bre / m-aromatic polyamide bre)

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