Nylon-MXD6 is a generic name given to a wide range of polyamides produced from m-xylenediamine (MXDA) by Mitsubishi Gas Chemical Co., Ind.
It is a crystalline polyamide produced by polycondensation of MXDA with adipic acid.
Different from Nylon 6 and Nylon 66, Nylon-MXD6 is an aliphatic polyamide containing an aromatic ring in its main chain. See the chemical configuration shown below.
Compared with Nylon 6 and Nylon 66, Nylon-MXD6 has the following favorable characteristics:
- Greater strength and elastic modulus;
- High glass-transition temperature;
- Low water absorption and moisture permeability;
- Favorable crystallization speed and ease of molding and fabrication;
- Excellent gas-barrier properties.
These features lead to greatly varied applications for Nylon-MXD6 as a packaging and molding material, and in the production of monofilaments.
Nylon-MXD6 shows an excellent gas-barrier quality against oxygen and carbon dioxide. Under certain conditions, its gas-barrier quality exceeds that of copolymerization resins such as ethylene vinyl alcohol (EVOH), vinylidene chloride (PVDC), and acrylnitrile (PAN).
The molding specifications of Nylon-MXD6 match well with the criteria for molding other materials. This means you can use Nylon-MXD6 in combination with polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE) to achieve co-injection molding and co-extrusion molding to produce laminated containers, bottles, and packaging sheets.
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