Plastic evolution
- Jan 05, 2019 -

New high thermal conductivity bioplastics



Nec has developed a new plant-based bioplastics that has the same thermal conductivity as stainless steel. The company blends corn-based polylactic acid resin with carbon fiber a few millimeters long and 0.01mm in diameter and a special binder to produce a new type of bioplastics with high thermal conductivity. When mixed with 10% carbon fiber, the bioplastics have the same thermal conductivity as stainless steel. When 30% carbon fiber is added, the bioplastics have twice the thermal conductivity of stainless steel and only 1/5 the density of stainless steel.



Apart from good thermal conductivity, this kind of biological plastic also has the advantages of light weight, easy molding and small environmental pollution. It can be used to produce the outer frame of light and thin electronic products such as computers and mobile phones.



Changeable plastic film



A color-changing plastic film has been developed by the university of Southampton in the UK and the darmstadt institute for plastics in Germany. The film, which combines natural and artificial optical effects, is actually a new way of making objects change colour precisely. This can change color plastic film for plastics opal film, in 3 d space by folding it, of plastic ball in the middle of the plastic ball also contains tiny carbon nanoparticles, and light is not only material between the edge of the area around the plastic balls and reflection, but also in filling in the plastic ball between carbon nanoparticles surface reflection. This greatly enhances the color of the film. By controlling the size of the plastic pellet, light is produced that scatters only certain spectral frequencies.



Plastic blood



Researchers at the university of Sheffield have created an artificial "plastic blood" that looks like thick paste enough to be dissolved in water and used as a blood substitute in emergencies. The new blood is made up of plastic molecules, millions of them in a single piece of blood. The molecules are similar in size and shape to hemoglobin molecules and carry iron atoms that carry oxygen around the body like hemoglobin does. As the raw material is plastic, this kind of artificial blood is portable and easy to carry, does not need to be kept in cold storage, has a long shelf life, higher work efficiency than the real artificial blood, and lower cost.



New bulletproof plastics



In 2013, a team of scientists in Mexico developed a new type of bulletproof plastic that can be used to make bulletproof glass and body armor, with a quality 1/5 to 1/7 that of traditional materials. This is a specially processed plastic material, compared with the normal structure of plastic, with super elastic. Tests showed the new plastic could withstand a bullet with a diameter of 22mm. The normal bulletproof material is damaged and deformed after being hit by a bullet, so it cannot be used any longer. This new material, though momentarily deformed by the impact of a bullet, will soon return to its original state and can be used again. In addition, the new material could distribute the impact of the bullet equally, thus reducing the damage to the human body.



Plastic that reduces the noise of cars



American polymer group (PGI) USES renewable polypropylene and polyethylene terephthalate as a new base material for moldable automotive parts to reduce noise. This kind of material is mainly used in car body and wheel well pad, to create a barrier layer, can absorb the voice of the motor car and reduce the noise, reduce the range of 25% ~ 30%, PGI company has developed a special kind of one-step production process, will be recycled materials and materials without treatment organic combination together, by cascading method and acupuncture method in two kinds of material as a whole.


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