However, then again, the modulus signifi**tly increased and the pressure decreased by adding PP and talc. For example, a method ** embody making an XLPE materials with an affordable amount of crosslink density and/or including one or more supplies that may favorably work together with XLPE and kind a suitable thermally stable **posite with excessive chemical resistance. Table 1 exhibits the values of crosslink density for absolutely cured samples calculated from Eqn. FIGS. 16 and 17 present plots 1600 and 1700 as to submit-annealing samples for one month at room temperature. Both samples have **siderably the same st**e modulus in the temperature vary from approximately _70 levels C. as much as roughly a hundred and fifteen degrees C. The value of st**e modulus of the totally cured sample tends to be about one order of magnitude increased than that of uncured pattern in the high temperature range, increased than the melting point of XLPE. FIG. 18 shows a plot 1800 of DMA measurements (st**e modulus versus temperature) for uncured and totally cured pure XLPE as well as pure PP, uncured XLPE/PP 75/25 and uncured XLPE/PP 50/50 wt % blends. Specifically, the plots 1600 and 1700 present DMA and rheology measurements as retested.
Based on the DMA out**es, a blend XLPE with PP with at least approximately 25 wt % could substantially enha**he thermal stability and chemical **patibility of uncured XLPE. As mentioned, varied parameters of a manufacturing course of may be tailor-made to extend the crosslinking fee to thereby obtain a desired quantity of crosslinking (e.g., a desired crosslink density) of XLPE throughout the manufacturing course of, which may help to guard a lead (Pb) barrier layer from a number of subsequent processes (e.g., armoring, rolling on a spool, etc.). As an example, a energy cable ** embody an insulation layer that includes EPDM, a lead (Pb) barrier layer and a protecting layer that features a crosslinked polyethylene where the protective layer could further embody polypropylene and/or talc. Such a polymeric material could also be blended with a number of other supplies akin to, for example, polypropylene (PP) and/or talc. In the example of FIG. 23, the a number of **ductors 2310 may be formed from a uncooked **ductor material (e.g., copper) that has been drawn to a standard wire dimension, annealed, and plated i**her a stranded or stable **figuration. FIG. 20 shows a plot 2000 of the category angular frequency dependence of advanced viscosity for XLPE/PP/Talc with **pletely different co**rations at approximately 177 degrees C. (same because the processing temperature).
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FIG. 25 shows elements of a **puting system 2500 and a **worked system 2510. The system 2500 includes a number of processors 2502, memory and/or st**e **po**s 2504, one or more enter and/or output devices 2506 and a bus 2508. Based on an embodiment, directions may be stored in one or more **puter-readable media (e.g., reminis**ce/st**e **po**s 2504). Such instructions could also be learn by one or more processors (e.g., the processor(s) 2502) through a **unication bus (e.g., the bus 2508), which may be wired or wireless. The a number of processors could execute such instructions to implement (wholly or partly) a number of attributes (e.g., as a part of a method). For example, processing equipment could optionally embody one or more kinds of equipment that ** be utilized to change properties of the primary materials 2412 and/or the se**d material 2414 and/or the third materials 2416. For example, such tools may be or include a hot air oven and/or a hot liquid bath that may expedite curing, submit-curing, and so forth. when one or more of the supplies 2412 and 2416 is handed therethrough.
In some embodiments, a flat energy cable may embrace a number of **ductors, an insulation layer disposed over each **ductor, a lead (Pb) barrier layer disposed over every insulation layer, a cushion layer of crosslinked polyethylene (XPLE) that ** embody one or more additives that may be included in a**rudate that includes polyethylene, and an armor layer. For example, a te**ique ** embody extruding polyethylene a couple of lead (Pb) barrier layer disposed about a **ductor to form an assembly; and armoring at the very least one of many assemblies with metallic armor to type a cable where armoring **tains wrapping the metallic armor directly over the extruded polyethylene. Such an armor layer could also be a metallic armor that is wound spirally about one or more assemblies (e.g., **ductor assemblies). For example, a cushion layer ** embody a number of colorants. An armor layer could also be utilized over the cushion layer, directly or not directly. For instance, a energy cable ** embrace a **ductor; a lead (Pb) barrier layer disposed in regards to the **ductor; a cushion layer disposed **cerning the lead (Pb) barrier layer the place the cushion layer **tains crosslinked polyethylene (XLPE); and metallic armor wrapped about the cushion layer. In some embodiments, a power cable could embody a number of **ductors, an EPDM insulation layer disposed over each **ductor, and a lead (Pb) barrier layer disposed over the EPDM insulated **ductor(s).
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