Tyres reinforcement

However, there remain numerous end-use applications which require significant improvements in the properties PET has to offer. These include higher tensile strength and modulus for tyre reinforcement yams and monofilament applications, higher temperature resistance for hot-fill containers and films, and greater gaseous barrier for longer shelf-life requirements (e.g. fruit juice and beer markets). 

In composite materials, such as tyres (reinforced with tensile canvas) and other reinforced materials, the adhesion between the two phases is of prime importance poor adhesion may induce fatigue failure. 

In the form of synthetic fibres, its major use is in carpet yarns and in textiles, as woven polyester fabrics used in the home furnishings such as bed and table sheets, curtains and draperies. Industrial polyesters are used in tyre reinforcement, ropes and fabrics for conveyor and safety belts. 

PET PET Poly(ethylene terephthalate) Polyester fiber, industrial fibers, yams and ropes are used in tyre reinforcements, fabrics for conveyor belts, safety belts, films, soft drink and water bottles... 

Great improvement in unidirectional mechanical properties are possible by converting crystalline polymers into oriented structures of this type. Many everyday polymer products owe their success to this fact (2.N.8). For example isotropic poly(ethylene terephthalate) (I.N.IO) has a Young s modulus and tensile strength of 2.5 GPa and 70 MPa, respectively, at 20" C oriented fibres of the same polymer used in tyre reinforcement have values of 14 GPa and 830 MPa. Orientation is introduced into a crystalline polymer by one of two routes ... 

At the end of the vulcanization process for some specific applications, such as in tyres, reinforcing filler, usually carbon black is added to the compound. This carbon based curative lends to the material the black color typical of tires. 

Ethylene-carbon monoxide polymers offer superior performance as high-strength fibres for aramide tyre cord, but at a significantly lower cost. Their structure is more compatible with rubber than steel, polyester, or PA tyre reinforcements. 

Fibers for carpets, tyre reinforcement, clothes and ropes... 

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