The Development of the Materials for Smartphone Coating


2016-10-22
Since the iPhone arrived on the market in 2007, it leads the communications industry into the "touch screen" era. Then the smartphone products continue to challenge the limits of the screen size, from 3.5 inches, 3.7 inches, 4.3 inches to 4.7 inches, the GALAXY Note launched by SAMSUNG in 2011 even pushed the mainstream smartphone screen size to 5-inch standard, many consumers are now taking the mobile phone size as a criteria (the larger the size, the more high-end products). Under the above-mentioned general trend, if the large-size smartphone uses all-metal coating, the weight will make the user feel uncomfortable. The other advanced composites materials are therefore being considered as the alternative by the major mobile phone companies, and nano-carbon fiber is one of them.
 
Most people are not familiar with nanometer (nm) length units; a nanometer refers to a billionth of a meter. At the nanoscale level, since the interaction of electrons and atoms in the material will be greatly affected by the size of the material, the material will behave differently from the past and its fundamental properties such as melting point, magnetism, and even color can change. But there is no need to replace the chemical composition of the material. For example, the ceramic made by ultra-fine particles, its hardness can be improved, the strength of the carbon fiber materials made by the nanotechnology is ten times more than the previous carbon fiber materials, and also will significantly reduce the percentage of wear and increase service life.
 
Carbon fiber has the characteristics of general carbon materials such as high temperature, abrasion resistance, conductivity, thermal conductivity and corrosion resistance, but with the general carbon material is different from the shape of the carbon fiber has significant anisotropy, soft, The fabric exhibits high strength along the fiber axis. And it has the more strength than resin, metal, ceramic and other composite material in the existing structural materials. That is because of its material properties, carbon fiber from the early fifties of last century began to apply in the field of aviation and space. Rocket engineers found that the every each reduction of 1 kg of the rocket weight can make the rocket save 500 kilograms of fuel. Weight saving of the aircraft can also keep fuel consumption low and improve speed. The carbon fiber composite materials of US JSF advanced fighter aircraft has 25% of the total weight of the aircraft, accounting for 33% of the weight of the wing. With the development of science and technology, carbon fiber composite material production technology continues to progress, the cost is getting lower and lower. In addition to the above-mentioned aerospace applications, but also widely used in sports equipment, textiles, chemical machinery and medical fields.
 
From the perspective of mobile phone companies, carbon fiber material is a potential coating material: it has both aluminum and magnesium alloy elegant and robust features but also has a high degree of plastic ABS plastic, the appearance of similar plastic but the strength and thermal conductivity Better than regular ABS plastic. IBM has long been using carbon fiber materials as a laptop computer coating material, and the most representative of the IBM 600 series has been sold in the world more than 200 million units. IBM engineers' research data show that carbon fiber is twice as strong and toughness of aluminum-magnesium alloy and the cooling effect is the best. Because the carbon fiber is a conductive material, it can play similar to the role of metal material mask (ABS plastic coating will need to additionally coat with a layer of metal film as a mask), using carbon fiber material also has the advantage: If its surface is Oily thick ballpoint pen, oily pen and other traces left behind can be easily erased.
 
The electronics companies like Apple are still actively exploring the possibility of using carbon fiber materials, and it is said that the future of the Apple MacBook Pro and iPhone is likely to use carbon fiber materials or liquid metal materials.