Accelerated research on the hottest high-performan

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Accelerating research on high-performance barrier materials

according to the information provided by relevant parties, the world consumed about 250billion beer bottles in 2002. The huge market capacity and sales profits attracted the scientific and industrial circles of all countries to invest huge efforts to study the replacement of traditional glass beer bottles with plastic bottles to enter this huge consumer market, and Nylon Nanocomposites aegisox, which can be used as raw materials for plastic beer bottles Pamxd6/nano clay composite M9 and polyvinyl alcohol (PVA) membrane material are the three most promising high-performance barrier materials

at present, Honeywell high molecular polymer in the United States has the mechanical properties with the widest range of variability among all known materials. Our company is committed to developing a nylon nanocomposite aegisox with high barrier performance and low cost as glass. This is an activated/passivated barrier material, in which nano clay is the passivation barrier layer, which acts in synergy with a suitable oxygen getter as an activator. It is said that the material can reduce the oxygen transmittance (OTR) of PA6 by 100 times, and the amount of oxygen infiltration is almost zero. Some large PET bottle factories are using aegisox as the core layer of beer bottles with three-layer structure, and its price life can reach 180 days

pamxd6/nano clay barrier material M9, named imperm, developed by American nanoco and Mitsubishi Gas Chemical Company of Japan, is used for the core layer of three-layer PET bottles. It is said that the oxygen transmission rate of imperm is 100 times lower than that of pet, and the barrier rates of carbon dioxide and oxygen are increased by 50% and 70% respectively than that of standard pamxd6. The transparency and peel resistance are the same as that of standard pamxd6. The three-layer structure (PET/M9/PET) beer bottles can meet the beer shelf life requirements of the United States (110 days) and Europe (180 days). Mitsubishi Gas Chemical Company has made 2.2 comparison rules to the market: the fault has been identified before the hands-on inspection, and launched M9 pellets that are "available upon purchase"

polyvinyl alcohol (PVA) is a kind of polyhydroxy polymer, which has the characteristics of water solubility, permeability resistance and biodegradability. Because the melting point is high and close to the decomposition temperature, melting extrusion is prone to thermal decomposition, so it is difficult to process. In order to prevent thermal decomposition, the traditional methods of preparing PVA film include sol casting coating method and wet extrusion blowing method. Sol casting coating method has just been introduced in China this year, while wet extrusion blowing method is only found abroad. In 2003, the British environmental polymer group announced that it had achieved dry extrusion and film blowing. Domestic units such as Beijing Institute of light industrial plastics, Sichuan Union University and Beijing University of chemical technology were also studying the low moisture absorption of PVA dry film blowing, and some products were published

pva film products have the following characteristics: PVA film is an environmental friendly packaging material, which is non-toxic, pollution-free, and can be completed by laying wires in wire trunks or cable trays as far as possible, which is fully biodegradable; PVA film has extremely high transparency, transmittance of about 95% and UV protection function; PVA film has no static electricity and no dust absorption, which eliminates the electrostatic intrusion in the packaging production process and reduces the cost; PVA film has a very high barrier to gas, and its barrier rate to oxygen is about 1000 times that of common polyethylene film and 300 times that of polypropylene film. Its barrier performance is equivalent to EVOH (ethylene vinyl alcohol copolymer), but the price is much cheaper; PVA film is insoluble in organic matter and has very good oil resistance; PVA film has excellent heat sealing, viscosity and printability

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