How the hottest nanocomposites improve the thermod

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How nanocomposites improve the thermodynamic properties of plastics II. Tpos with greater strength. In the papers published by general motors and southern clay products, many methods to improve the properties of automotive TPO by adding nano clay are mentioned. These achievements are hard won: because clay is easy to agglomerate, it was very difficult to use it at first, and then it was solved by optimizing the feeding mode of clay in the extruder, screw design, screw speed, temperature and pressure. Once this problem is solved, TPO with nanocomposites shows better performance than traditional TPO with mica as filler in many aspects, such as maintaining good ductility at low temperature, eliminating "tiger lines", reducing the layering of coating, improving the appearance of confluence line, improving coloring performance, scratch resistance, and recycling. More importantly, the low filling amount from 3% to 21% reduces the material density (from 0.92 to 0.96 to 1.13g/cc), resulting in the need for only a small amount of adhesive when bonding with accessories, further reducing the cost

among many automobile components using nanocomposites outside, inside and inside the hood, nanocomposites are suitable for automotive dashboard, rocker cover, side wall decoration, grille, hood ventilation slot, dashboard, seat/ip foam, interior door panel, column cover, engine baffle, fan cover, air intake pipe, fuel tank, fuel pipe and other components

in addition to tpo/nano clay composites, General Motors also uses carbon nanotubes to replace the current general thermosetting resin materials. At present, GM is committed to replacing continuous carbon fibers with nanotubes or short nano fibers to reduce the level of reinforcement in class a applications. Nanotubes are also very effective in reducing the thermal diffusivity of plastics

4. Relationship between bending modulus and filling material: the best bending modulus is obtained on the chevyimpala TPO model. The amount of nano clay is 75% less than that of standard mica (source: Southern clay products), which has better barrier ability

due to the use of nano clay, the technology of polymer materials in barrier has also made great progress, Mitsubishi Gas Chemical (MGC) and Honeywell specialty polymers both use nylon with nano clay as additive to make the protective layer of multi-layer PET bottles and food packaging films. MGC's MXD6 nylon nanocomposite, also known as imperm n, has been commercially applied in Europe to the packaging bottles of beer and other alcoholic beverages - Multilayer PET bottles. In addition, it is also used in the bottles of carbonated beverages. In the next six months, other products of the imperm series will also be launched on thermoformed containers for packaging cooked meat and cheese, as well as multilayer flexible films for packaging potato chips and sauces

honeywell's Aegis nylon 6 nanocomposite was originally targeted at PET beer bottles. In the latter half of 2003, the 1.6-liter Hite pitcher beer of South Korea's Hite liquor company also introduced the use of the company's products containing deoxidizers. Among them, aegis is the protective layer in its three-layer structure, which is said to make the shelf life up to 26 weeks

honeywell also aims at other levels of aegis nanocomposites, using these production films or bags without deoxidizers to replace the original EVOH. It is reported that this level of nanocomposites is cheaper than EVOH, with better protective effect, lighter and more transparent, and better puncture resistance (because its internal nanostructure does not hinder the passage of light)

the U.S. military and NASA, in cooperation with Triton system, Inc., Chelmsford, mass, etc., are committed to studying nano clay as a filler to improve the protective ability of EVOH to achieve long-term food preservation. Once, EVOH mixed with 3% Southern clay cloisite was experimentally sandwiched between two layers of PP like a sandwich to make a hot formed dinner plate. It is reported that the shelf can be used for three to five years without refrigerators, which is more transparent, simpler and recyclable

American Aluminum Corporation CSI, Crawfordsville and ind. are all applying for patents on the co extrusion protective bushing that can be used on the plastic bottle cap of beer bottles, juice bottles or carbonated drinks. It includes a layer of nylon 6/nano clay composite and one or two layers of EVA containing and deoxidizer. It is said that compared with other protective materials, it has better performance under very high humidity (relative humidity 95% to 96%)

LG Chemical Co., Ltd. in South Korea has recently developed a high barrier single-layer blow molded container made of high-density polyethylene material containing 3% to 5% nano clay, which is used as a treatment container for toluene and some light hydrocarbons

universal nano carbon

in the early 1990s, the composite of nylon 12 and carbon nanotubes was used to make an internal protective layer, which was used in automotive fuel pipe components: quick connectors and filters. Hyperion catalyst now aims to introduce nanotubes into other resin materials and apply them to automotive fuel systems. Such as modified nylon and some fluoropolymers. This new fluoropolymer/nanotube composite can be used to manufacture O-rings for automotive fuel connectors

in the electronic industry, computer hardware made of polycarbonate and polyetherimide (GE ULTEM) can have better conductivity and smoother surface through the reinforcement of nanotubes

in the past three years, a very large European automobile manufacturing company added carbon nanotubes to GE's NORYL GTX nylon/ppo alloy to mold the external fender. This conductive nanocomposite material can be painted by electrostatic method

the University of Michigan (MSU) Center for composites and structures, located in the east of Lansing, has recently developed a surface treated graphite nanoplate. The modulus of graphite is several times that of clay, and it has better electrical and thermal properties. After it is bonded with an epoxy resin base, it will have better mechanical properties and higher conductivity than general carbon fiber and nano carbon black. MSU foresees that it has great development potential in the protection of echo detectors and electromagnetic interference shielding. This plastic nano graphite composite will sell for $5/pound, which is much cheaper than nanotubes or evaporation generated carbon fiber

can it be tested with a tensile testing machine? Carbon nanotubes can change far more than conductivity. The National Institute of standards and Technology (NIST) found that the addition of carbon nanotubes to PP not only improves the strength and properties of the material, but also changes the flow of molten polymer and effectively removes die expansion

nano flame retardant

nist has proved the effectiveness of nano clay as a flame retardant synergist. They found that nylon 6 with 2% to 5% nano clay reduced the heat dissipation rate by 32% to 63%

foster Corp, a special mixing company, recently announced that it would add high-level (including 13.9%) nano clay to nylon 12 elastomer. Only when the equipment stiffness is 1/8 higher than the original thickness, it can reach the level of UL 94V-0. In the coking experiment, as a form of carbon, the addition of nano clay reduced the amount of typical flame retardant system with 50% halogen/antimony oxide to half, greatly reducing the physical damage. The company introduced this nylon 12/nano clay composite for pipes and films in 2001

SUD Chemie company in Germany (the U.S. office in KY Louisville) provided an improved nano clay called NANOFIL as a flame retardant. It has also recently developed a halogen-free eva/pe cable, "said Wang Wanjie. It contains 3% to 5% of the new NANOFIL se 3000, which adds 52% to 55% of aluminum hydroxide or magnesium hydroxide. It has better mechanical properties, smoother surface and faster extrusion speed

according to Hyperion catalysis, two recent studies have shown that multilayer carbon nanotubes will also be applied to halogen-free flame retardants. Whether adding 2.4% to 4.8% nanotubes to EVA or maleic anhydride modified PP will achieve a better heat release rate than adding the same amount of nano clay

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