what are synthetic fibres how can you idetity the fibres
Answers
Answer:
A Synthetic Fibre is a chain of small units of chemical substance joined together. Many such single units combine to form single unit called Polymer. Polymer means �made of many units joined together�.
III. Types of Synthetic Fibre
Rayon
Nylon
Polyester
Acrylic
Answer:
Explanation:
Many ropes look alike, especially with regard to material. Once a rope is removed from the reel or packing box or is otherwise separated from documentation, the material, and even the name of the manufacturer might not be easily determined.
Users frequently encounter ropes of unknown rope material. Some fibres are very similar in appearance. But important fibre rope properties such as strength, extension and durability are primarily functions of the material. Substitution of ropes of the wrong fibre material can have disastrous consequences in critical applications.
Simple observations and tests can be used to identify various fibres commonly used in ropes. Experts can distinguish some materials by appearance alone, but this is not generally reliable. Some tests can easily be performed in the field without special preparations and laboratory equipment. The burn test is the easiest to perform, but it may be impractical in some environments. Several appropriate tests should be performed for positive identification. Markings provided by manufacturers can also help in identification.
A thorough study of the techniques, practice with known fibre materials, and preparation of a few supplies will enable the user to identify most materials found in ropes. No single test should be relied upon for positive identification. Several appropriate tests should be used. When positive identification is very important, expert advice and laboratory testing should be relied on.