Application prospect of the hottest nano in plasti

2022-08-05
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Application prospect of nano in the plastic industry

"nano carbon materials in the 21st century will play a decisive role in human society like aluminum materials in the 20th century!" This sentence is the prediction of MAS lake, President of applied science company in the United States. Applied science, based in Ohio, is an enterprise engaged in the research and development of advanced materials. Nano carbon material is a kind of micro particle with very high aspect ratio (length to diameter ratio), which has the characteristics of high strength and light weight similar to aluminum. When used in plastics, it can also greatly improve the conductivity and thermal conductivity of plastic products

at present, the main suppliers of nano carbon materials worldwide include hyperioncatalyst (the only one in North America), Mitsui and Showa denko of Japan, and pyrograf products (a subsidiary of Applied Science). The latter developed a graphite nanofiber test sample with a diameter of 100 ~ 200 nm, a length of 100 μ m and an aspect ratio of 500 ~ 1000 ∶ 1. At present, only samples are provided at the price of 70 US dollars/pound, and a pilot plant is under construction. If 0 With a proportion of 5% ~ 5%, adding pf24 grade carbon nanofibers produced by pyrograf company to the plastic, the rigidity of the plastic products will be increased by 5 times, and the surface resistance value will be reduced to 1 ~ 1010 ohms/square meter

among the particles of multi wall nano graphite tubes produced by Hyperion, the transverse width is only 10 nm, the length is 10 ~ 100 μ m, and the aspect ratio is at least 1000:1. These "fine fibers" with small size and small flexibility are difficult to disperse during plastic processing

in order to ensure a satisfactory dispersion effect, Hyperion has produced and provided masterbatch particles, which contain 15% ~ 20% of small fibers, which can reduce 0 5% by weight of added material

according to Pat Collins, marketing manager of Hyperion, the mixture made of this kind of fine fiber is applicable to all levels of electronic spectrum. The addition amount can be at least 50% lower than that of ordinary carbon fiber, and the volume is quite different. It is reported that the toughness and ductility of this kind of carbon nanotube far exceed that of the best traditional conductive materials, and its viscosity is also very little affected. Therefore, this kind of fine fiber is very suitable for processing thin-wall plastic parts, and the exterior parts processed with it also have good surface quality, which is smaller than the shrinkage of the mixture and the warpage deformation of the products made of traditional fillers

hyperion's products have expanded from the original PA 6 and PA 66, PBT, PC masterbatches to peek, Pei (ULTEM polyetherimide produced by GE), PPS, PA12, PS and other masterbatches. Next, it will launch PP, pet, EVA masterbatches. The current use, including PA 12, is to replace metals in automotive fuel lines. The combination of excellent electrostatic dissipation (ESD) performance, high toughness, and high fracture resistance brings additional safety performance. What are the functional characteristics of the electrostatic spray paint grade mixture made of carbon nanotube as the matrix only in the table type tensile testing machine? By adding about 2% ~ 3% to the plastic formula, the plastic product can obtain ideal conductivity and achieve class a surface quality

at present, the high cost is the main constraint in the use of carbon nanotubes. For example, the small fibers of Hyperion are priced at about $50/pound. Mr. Collins said: after long-term efforts, especially after the start-up of global scale manufacturers, their prices will decline

in addition, Scott kobena, product manager of conductive materials of RTP company, said that adding 4% ~ 7% of carbon nanotube mixture produced by RTP company can make plastic products have a surface resistance of 104 ~ 109 ohms/m2. The NTC series materials of the company have the least cold and hot spots, which are suitable for high-purity electrostatic dissipation and electrostatic spraying mixtures. The company also adds carbon nanotubes to high impact polystyrene, polyoxymethylene and other kinds of engineering resins. The price of NTC series products is 25% ~ 100% higher than that of Pan grade fiber mixtures

lnp company can supply high-purity electrostatic dissipation material - "ultra clean stat- Kon", that is, add carbon nanotubes to peek and Pei materials to produce wafer boxes and disk drive components. Its ionic pollution is said to be 65% ~ 90% lower than that of carbon fiber materials

Ticona can provide conductive PPS series materials, using a non-traditional carbon conductor. This new material is said to have many advantages of carbon nanotubes, and the cost is quite low. This additive and specialized synthesis technology are said to ensure accurate "tuning" of electrostatic dissipation performance. The material has also been described as "clean" material, which does not fall off and has low ionic pollution. It can also remove odor. It is used in the production of liquid crystal displays, electronic storage media and microelectronic packaging boxes. (translated by long Sangtian) 63

information source: plastic

the Ministry of public security will no longer implement the new trend statement on the development of organic thermal insulation materials in Document No. 65:

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