A kind of PE fiber central tube bundle type optical cable and its manufacturing method

Abstract

The invention discloses a manufacturing method of PE fiber for a central tube type cable, and is characterized in that aramid fiber is replaced by the PE fiber, and an outer jacket part subjected to heat processing is separated through a process of coating a layer of a polyimide film or a polyimide insulation tape, so that the temperature cannot be higher than the maximum temperature limit of a PE fiber yarn in a manufacturing process. According to the method, advantages of an ultra-high molecular PE fiber yarn are utilized to reinforce using performance of the cable and avoid damage to the performance of the ultra-high molecular PE fiber yarn in a high-temperature production process.

Description

technical field [0001] The invention relates to the technical field of communication optical cables, in particular to a PE fiber central tube bundle optical cable and a manufacturing method thereof. Background technique [0002] Ultra-high-strength PE fiber is also called ultra-high molecular weight polyethylene (UHMWPE) fiber, also known as high-strength high-modulus polyethylene fiber. It is a high-performance fiber successfully developed in the early 1980s. , High-strength and high-modulus polyethylene fiber), it is a fiber with a highly oriented extended chain structure. [0003] Ultra-high-strength PE fiber has high axial specific tensile strength and stiffness, extremely high specific modulus, outstanding impact resistance and cutting resistance toughness, good chemical stability such as low temperature resistance, abrasion resistance and ultraviolet resistance, etc. In addition, it has excellent properties such as ultraviolet radiation resistance, chemical corrosion ...

AI Technical Summary

Problems solved by technology

[0004] However, ultra-high molecular weight polyethylene materials are afraid of high temperature. Due to the huge molecular weight and high crystallinity of ultra-high molecular weight polyethylene, its dissolution needs to be carried out at high temperature and for a long time.

At high temperature, ultra-high molecular weight polyethylene is prone to thermo-oxidative cracking.

The antioxidant 1010 (a multi-component hindered phenolic antioxidant) usually used for ordinary molecular weight polyethylene has insufficient anti-oxidation effect on ultra-high molecular weight polyethylene when it is dissolved. The viscosity of the ethylene solution will drop significantly, and the strength of the prepared polyethylene fiber will drop greatly.

Therefore, although this material has been widely used in new building materials and other fields, it is less used in the field of electronics and information industries, such as optical cable products, because the optical cable has to go through several times during the manufacturing process. Baidu's outer protective material is in the melting stage, so its technology has not been able to achieve a breakthrough

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