Raw materials: polyamide, polypropylene and polyester. Each rope is made of ultra-thin filaments. The following is an introduction to the main fibers we use and their characteristics.
Frequently used materials
Polyamide is the most widely used fiber, which is used to make high-quality ropes from synthetic materials. The most familiar polyamide types are DuPont nylon (PA 6.6) and Perlon(PA 6). Polyamide is wear-resistant, very strong and very elastic. It can be heated and permanently shaped-this feature is used in the heat fixing process. Because of the need to absorb energy, the power rope is made entirely of polyamide. Polyamide fiber is also widely used to make static ropes, although the material type with less extensibility is selected. The disadvantage of polyamide is that it absorbs relatively more water, which will cause it to shrink if it gets wet.
Because it is polypropylene, it is very light in weight.
Polypropylene is light and cheap. Because of its low wear resistance, polypropylene is mostly used to make rope cores, which are protected by polyamide sheaths. Polypropylene is extremely light in weight, low in relative density and can float. That’s why we use it to make our stream rope.
Use of polyester
Static ropes made of polyester fibers are mainly used for jobs that may come into contact with acids or corrosive chemicals. Unlike polyamide, it has higher acid resistance and hardly absorbs water. However, polyester fiber has only limited energy absorption characteristics, which means that its applicability to PPE is limited.
Achieve high tear strength.
Dynema rope Dynema is a synthetic fiber rope made of ultra-high molecular weight polyethylene. It has extremely high tear strength and extremely low elongation. Calculated by weight ratio, its tensile strength is 15 times that of steel. Its main features are high wear resistance, high ultraviolet stability and light weight. However, Dyneema rope does not provide any dynamic energy absorption, which makes it unsuitable for personal protective equipment. Dyneema rope is mainly used to drag heavy objects. They are often used instead of heavy steel cables. In practice, the melting point of Dyneema rope is very low. This means that the fibers of Dynema rope Dynema (ultra-high molecular weight polyethylene rope) may be damaged when the temperature exceeds 135 degrees Celsius.
A perfect interpretation of cutting resistance.
Aramid is an extremely strong and heat-resistant fiber with high cutting resistance. Like Dyneema rope, aramid rope does not provide dynamic energy absorption, so its applicability to PPE is limited. Because of its extreme sensitivity to bending and low ultraviolet resistance, aramid fibers are usually given polyamide sheaths to protect them. We use aramid rope to act on the system rope for work positioning, which requires minimum extensibility and high cutting resistance.
Post time: May-09-2023