WO2001033577A1 - Electrically insulating sheath - Google Patents

Abstract

The invention relates to electric insulation techniques and in particular to electrically insulating sheaths that have shielding properties and are resistant to temperature and flames. The invention makes it possible to produce a sheath with shielding and fire resisting properties and which is light and elastic. Such a sheath is electrically insulating and has improved electric insulation, mechanic and thermal properties. It is resistant to open fire, to high temperatures of up to 600 °C and to acids, hydrocarbons, organic solvents and microbiological factors. According to the invention, said insulating sheath consists of several threads having different compositions, whereby said threads are twisted two by two. One thread is made of aramide fibers and is used as an armature while the other is a metal wire and acts as a shielding element. A metal wire, with or without a coating, can be used as a shielding element. The armature may be a braid comprising at least two twisted aramide threads or contain several pairs of aramide threads and a metal wire twisted two by two, whereby said pairs are braided to form a tape or a web.

Description

\ УΟ 01/33577 ΡСΤ7ΚШΟ / 00170

INSULATION EASY FIELD FIELD The invention is not available for electrically-powered computers that have an ergonomic environment. PREVIOUS LEVEL OF TECHNOLOGY

Lightweight, flexible metal shields are known for use with a quick-access tap-changer, which protects the handset for a small period of 9 months.

However, a well-known strip is sufficiently heavy and not elastic, which restricts the scope of its application. The closest to the declared environment is the case for the protection of cables from mechanical and heat sources and the means of its delivery, recorded on March 27,.

With this well-known component of filament, it is produced by twisting synthetic aramid waves and by-products from carbon dioxide and hydrogen compounds.

By this means, the urban wolves make up the majority of the multicore strands. In order to protect cables and cable harnesses from mechanical and thermal drives, multiple net- tions are wrapped in the form of a cable or cable that is not completely damaged. The edible source of this hazardous product is that of the Russian Federation, including aromatic ammunition, which is exposed to a gas flame and is exposed to high temperature

DISCLOSURE OF INVENTION

The main task of the invention is to create a water-resistant, eco-friendly, light and elastic with increased electrical energy. Sustainable flame, high temperatures up to + 600 ° С, acids, non-food products, industrial solvents, and are very friendly.

The posed task is solved thanks to the fact that a part is made of different types of equipment tied up between one thread, one of which is borrowed from an amid. Βτορaya - performed in in the form of metallic filaments and provides a personal protective element in the form of a metallic circuit.

The main base can be made in the form of a harness from. At the least, two arimide threads are knitted between themselves. A little bit of money can be worn by a couple of scholars between themselves from an arimide fiber and metal filament, but this is a matter of being worn together. Pair of threads can be woven together in a solid.

Good performance expands the scope of the application. The best variant of the invention из hereinafter in the description of the products, in the quality of the example, one of the means of receiving the arimidemic wave.

For example. Ρ Reactor, equipped with a stirrer and thermo-stabilizing rubash. It loads 4,4-diamine-diphenyl ether in dimethylacetamide. Then, with constant stirring and a temperature of 10 - 15 ° С in the case of diamine, add an effective amount of dry diangidrude. As a result of the reaction of condensation, a viscous solution of polylamide acid with a concentration of 12.8 wt.% And a dynamic viscosity of 42.5 Pa.s.

After filtering and dehumidifying with a vacuum solution of poliamide acid, it is washed in a water-dimethyl acetate bath through the filter. having 100 holes with a diameter of 0.08 mm. Then, freshly threaded thread will allow a plastic cooker hood to be exhausted at 20 ° C by 2.5 times. Tidy up washes out the uncontaminated water and processes the acidic acid. Then dry it at a temperature of 50 ° C in a vacuum and prevent heat treatment, an inextinguishable empty shell with an inert temperature, has a temperature of 550 ° C. Tension at a speed of 8 s / tex, a speed of 20 m / min (indicators of thread are given in the table). Thread Index Example

Reference, s / tex 150 - 160 Explicit elongation,% 2.5 - 3.5

Product range, kgf / mm ² 12000 Acid Index,% 70 - 75

Density, gf / cm ³ 1.55

Compliance, Βτ / m. City 0.060

Equilibrium moisture content, at 65% humidity, 1, 20

Shrinkage in smoking water,% 0

Shrinkage at the air πρ and 300 ° С,% 0.2

Smoke emitted by the action of a flame,% <1.0 CΟΕ indicator, mg-eq / g 4.6

Lack of stability after heating on the air,% at 300 ° С for 100 h 85 - 90 at 500 ° С for 20 h 76

Reference for liquid nitrogen temperature (-196 ° С), 195 - 200 s / tex

SUSTAINABILITY FOR PRODUCTS IS 100% SUSTAINABLE FOR MICROSOLIBLE DESTRUCTION IS 100%

It has been proved experimentally that an arimide wavy powder is purely typical for temperatures in the range of + 600 ° C.

In the present invention, the thread of the arimide wave is an arming base. For the creation of a screening effect, the aromatic base is controlled by a metallic wall.

For example. Аче On the other hand, the metallic element may be used with or without metallic waste. Assembly for 0.05 mm is carried out on a tumbling machine with a slip through the diamond rollers. Further, its tinning is carried out, for example, by pure tin, by the way. Squeezing into a thread of 0.05 mm with a tidy thickness of 0.015 to 0.020 mm is produced on a flattening machine.

It is light, flexible, elastic and environmentally friendly to come from an arimidemic wave, having been beaten by a metallic rim.

To protect a long product (output or cable), it is wound around the output or cable in the form of a bag, reliably protecting it, and this is not significant at all. By the way, the cables and the wires that make up the cable can be individually wired, and then in the complex. The file may be made in the form of a bundle of, at least, two arimide strands.

Good performance enhances mechanical and thermal performance.

Badges made in the form of a tape or a linen are made from threads that have a screening effect. Efficient execution of the small file expands the technological capabilities of its use.

The protected insulated case is lightweight, flexible, thermo-resistant, having an environmentally-friendly effect that meets all the requirements for electrical appliances. Intended use

You can find an application in the aeronautical, aerospace, ship, radio, electronic equipment, or explosive hazardous goods.

Claims

Formula of the invention

1. An isolated fragment made of various types of threads disassembled between itself, which is different. one of the threads is made from an arimide fiber and is an aromatic base, and the second is made in the form of metal thread and is an element of the product.

2. The isolated case of item 1, which is distinguished by the fact that the metallic element is the environmental element.

3. The isolated version of clause 2, which is distinguished by the fact that the electronic element is made in the form of a metal circuit, has a reversal.

4. The isolated ποπ. The article is distinguished by the fact that the aromatic base is made in the form of a bundle of, at least, two arimide threads, knitted together.

5. The isolated case is ππ, 1, 2, 3, 4, which is related to the fact that this couple consumes a little bit of aggregate from the small and small-sized industry

6. The isolated case of item 5, which is distinguished by the fact that the steams of these are woven together in a solid.