Optical cable and preparation method thereof
An optical cable and prefabricated technology, applied in the field of optical cable and its preparation, can solve the problems of expensive process equipment, unfriendly environment, low efficiency, etc., and achieve the effects of saving equipment investment, simplifying equipment, and reducing raw material consumption and cost.
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preparation example Construction
[0043] The preparation method of optical cable provided by the invention comprises the following steps:
[0044] (1) Combining multiple sheath strips and optical fiber units into an optical cable prefabricated body, the multiple sheath strips are used for splicing to form a sheath layer, and the inside of the sheath strips has a solder layer;
[0045] Molecular weight range: 100,000~300,000 g / mol; the non-crystalline high polymer has a side chain, the side chain is C2 to C8 hydrocarbon group, carboxylic acid group and / or ester group, preferably the side chain is selected from ethyl group , butyl group, octyl group, propenyl group, carboxylic acid group, ester group, one or more; its degree of branching is between 10 and 50; it is preferably a flame retardant solder resin, and the flame retardant resin solder is selected from A combination of one or more of acrylonitrile butadiene styrene copolymer, polystyrene, polyvinyl chloride, polymethacrylate, impact polystyrene copolymer...
Embodiment 1
[0055] This embodiment provides an optical cable, which is an ordinary optical cable with a structure such as figure 1 As shown, it includes an optical fiber unit and a sheath layer, and there is a solder layer between the optical fiber unit and the sheath layer;
[0056] The solder layer is made of impact polystyrene copolymer with a glass transition temperature range of 120°C, a molecular weight of 150,000 g / mol, a branching degree of 15, and a thickness of 4%.
[0057] The sheath layer is made of flame-retardant LSZH with a thickness of 2.0mm; the inner side has aramid yarn.
[0058] There is an adhesive layer between the solder layer and the sheath layer; the adhesive layer adopts polystyrene grafted glyceride.
[0059] The optical fiber unit includes a core layer, a UV-cured thermosetting resin coating, and a tight sleeve layer. The thermosetting resin coating is polyacrylate, and the curing degree is 76%. The tight sleeve layer is TPEE, and the crystallinity value is ...
Embodiment 2
[0070] This embodiment provides an optical cable, which is a butterfly optical cable with a structure such as image 3 As shown, it includes an optical fiber unit and a sheath layer, and there is a solder layer between the optical fiber unit and the sheath layer;
[0071]The solder layer is made of polymethacrylate with a glass transition temperature range of 110° C., a molecular weight of 200,000 g / mol, a degree of branching of 23, and a thickness of the solder layer of 5%.
[0072] The sheath layer is made of flame-retardant LSZH with a thickness of 1.8 mm; it has a reinforcement GRP.
[0073] There is an adhesive layer between the solder layer and the sheath layer; the adhesive layer adopts polyethylene grafted maleic anhydride.
[0074] The optical fiber unit includes a core layer, a UV-cured thermosetting resin coating, and a tight sleeve layer. The thermosetting resin coating is polyacrylate, and the curing degree is 79%. The tight sleeve layer is TPO with a crystalli...
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Abstract
Description
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Application Information
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