SU637285A1 - Filament for electric articles - Google Patents

Description

The invention relates to the industry of chemical fibers, in particular the development of filaments for electrical products. The known thread for electrical products, Includes a core of fiber (fiberglass) and a rubber sheath from a mixture based on a carbon-chain mat (for example, natural rubber) l. The known thread possesses low performance properties (electrical resistance is lower than 1-1 O cm-cm, cost to bends, for example, on the basis of the core of nitron fibers, up to 5OOO cycles). The circuit of the invention consists in increasing the performance properties of the thread while maintaining its high electrical characteristics. This goal is achieved by HTI. on the core with a diameter of 0.6-1 mm from polyamide, polyester or polyacrylonitrile fibers is applied by a conventional method a rubber sheath 12O150 thick, obtained from a mixture, wt. : Fluororubber1OO Magnesium Oxide 8-12 Chromium Oxide 5-8 Soot white 55-65 Methylethyl ketone 4O-45 Bis-furylidene-hexametypediamine 0.75-0.85 Cyclohexanone 1,5-2 The resulting yarns can be used with, in electrical products in as insulating elements in all climatic zones of the country for 7–1 years with the retention of high electroopicity properties. Example. A thread of nylon fibers (the structure of the T-93.5 Tex x4 thread) is treated at room temperature with compositions of composition 1, P or III indicated in. one.

The treated thread is dragged at a speed of 2–4 m / min through the calibrated hole and guided into a three-section vertical heat chamber with a thermal parametric zone 70i2 C; J 200 + 2 ° C

After drying, the thread is again treated with the indicated composition, calibrated, dried, etc., the trap is 18–20 times i, respectively, using the HaHocHNfbix coating layers and increasing during each turn

diameter of the calibrated orifice is 20-4 Om. The last turn of the thread is placed in the receiving container and subjected to additional processing in a heat chamber for 3 hours at 160 C.

Example 2. The yarn of polyester fibers of Dacron structure T-111 Tex X 4 process as described in example 1,

Example 3. A thread of polyacrylonitrile fibers nitron treated according to example 1,

Table 1

Properties of threads for electrical products after insolation for 12 months.

under the conditions of the middle band obtained in examples 1-3 are given in Table. 2

Claims (1)

Tables 2 From table. 2 it follows that, according to the ins and iRES properties, the thread with a core based on nitron fibers has the greatest resistance, and according to fatigue characteristics - a thread based on nylon fiber from caprone. The proposed filament for obtaining electromechanical materials makes it possible to obtain insulation materials with high heat and light resistance, good strength and fatigue properties (1.2–1.3 times), and for electrical insulating properties of more than an order of magnitude. The invention The thread for electrical products, including a fiber core and a rubber sheath from a mixture based on chain rubber, is different in that, in order to improve the performance properties while maintaining the electrical insulation characteristics of the thread, the latter includes a core with a diameter of 0.6-1 mm from polyamide, polyester or polyacrylonntrile fibers and rubber sheath 12O-150 µm thick, obtained from the mixture, weight, h Fluororubber1OO Magnesium oxide 8-12 Epohm oxide 5-8 Soot of white 55-65 Methyl ethyl ketone 4Q-45 Bis-furyl-denden hexametnendamnn 0.75-0.85 Cyclohexanone 1,5-2 Sources of information brought Bd attention during examination: 1. US Patent No. 36207О1, cl. 65-3, 1971.