Telecommunication cable equipped with microstructured optical fibres
A technology for microstructured optical fibers and cables, applied in the directions of clad optical fibers, fiber mechanical structures, light guides, etc., and can solve problems such as high elongation at break jackets or buffer layers
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example 1
[0118] Example 1: Preparation of polymer components.
[0119] The polymer components were prepared by using the components shown in Table 1 (amounts expressed in % by weight relative to the total weight of the polymer components).
[0120] Table 1
[0121] components
wt%
Ethylene Butyl Acrylate Copolymer
37.3
Low-density polyethylene
10.1
3.0
47.2
Processing aids
2.4
[0122] The ingredients were prepared by mixing the ingredients shown in Table 1 in an internal mixer. The mixture is then granulated and the granules obtained are used to produce the tight buffer layer of the cable of the invention.
[0123] The above polymeric components are characterized as follows:
[0124] - Ultimate elongation: 136% (measured on a plate);
[0125] -Ultimate tensile strength: 8.0MPa (ready-made measurement);
[0126] -50% modulus 7.0MPa (off-the-shelf measurement). ...
example 2
[0141] Example 2: Manual peel test.
[0142] The tests were carried out using five buffered optical fibers according to the invention from different production batches. The buffer was manually stripped from the fiber by the same operator, starting at 10 cm in increasing lengths. All five fibers were conveniently stripped of their buffer until they were 50 cm long. At 90 cm long, the buffer layers of the two fibers cannot be stripped. For the remaining three fibers, the bond between buffer and fiber (preventing buffer stripping) reaches 120 cm (two fibers) and 130 cm (one fiber).
example 3
[0143] Example 3: Preparation of polymer components.
[0144] The polymer components were prepared by using the components shown in Table 2 (amounts expressed in % by weight relative to the total weight of the polymer components).
[0145] Form 2
[0146] components
wt%
29.7
Low-density polyethylene
5.2
Aluminum hydroxide
62.9
2.1
[0147] The ingredients were prepared by mixing the ingredients shown in Table 2 in an internal mixer. This mixture is then granulated and the granules obtained are used to produce the sheathing of the cable of the invention.
[0148] The above polymer components are characterized as follows:
[0149] - Ultimate elongation: 164.3% (ready-made measurement);
[0150] -Ultimate tensile strength: 12.7MPa (ready-made measurement);
[0151] Modulus at -50% 10.5MPa (off-the-shelf measurement).
[0152] Modulus at -150% 12.7MPa (off-the-shelf measuremen...
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