High Strength Polymers

Kayaks are often made of a high-strength polymer coated with epoxy resin., --- ... 

Technical applications of epoxy resins started about fifty years ago and have resulted in a number of remarkable achievements in the filed of high-strength polymer composite materials, lacquers, coatings, adhesives, etc. 1 -ll). 

Shiga T., Hirose Y., Okada A., et al., Bending of high-strength polymer gel in a electric held Kobunshi Ronbunshu, 46 (1989) 709. 

Plasticization of high-strength polymers through introduction of polymethylsiloxane fluid (PMS) into the matrix (Fig. 1). 

VNY HIGH STRENGTH POLYMERS have been developed in recent years. The dreams of all-composite airplanes as well as artificial hearts have become realities. Thus, it is almost a necessity for chemists to acquire tribological information about these new polymers or composites and, vice versa, for tribologists to seek chemical knowledge about these materials. 

For structural design, the availability of high strength polymers and liquid crystalline polymers in recent years opens up new opportunities in competing with metals as wear resistant materials. Certainly, there are still more tribological studies needed to be done in establishing low wear polymers for each tribological system. 

Such calculations show that it is unrealistic to use high strength polymers, such as biaxially oriented PET (Section 4.5.3) for gas pipe the thin pipe walls would have insufficient resistance to soil loads in the period before the gas main is pressurised. 

More recently, lyotropic PLCs were catapulted into the forefront of polymer research when ultra-high strength polymer fibers were commercialized by spinning mesomorphic solutions of poly(p-aromatic amides), e.g., Du Pont s Kevlar. I have recently reviewed these aspects of PLCs.(25)... 

Complex polymers, mesophase polymers, high-strength polymers, high-temperature polymers conductivity in polymers, micro- and nanophase... 

High-strength polymer fibres with drawn chain molecules can be produced by spinning. Aramid fibres with drawn molecules, for example, can have a Young s modulus in fibre direction of up to 450 GPa and an axial tensile strength of 4700 MPa. These fibres are frequently used in composites (see chapter 9). 

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