CN208157125U - A kind of silicone rubber for cable - Google Patents

Abstract

The utility model discloses a kind of silicone rubber for cable, its from-inner-to-outer is made of conductor, insulating layer, belting layer, shielded layer, outer jacket；The outer extruded insulation layer of the conductor constitutes single insulated core, and a plurality of insulated core is twisted into cable core, and has filled layer in the cable core gap filling, and the filled layer uses glass fiber rope filled layer；The conductor is tin plating copper core flexible conductor, and the insulating layer is Ceramic silicon rubber insulating layer, and closely the wrapped belting layer, the belting layer are wrapped by halogen-free flame-retardant glass fibre ribbons for the cable core and filled layer outside.

Description

A kind of silicone rubber for cable

Technical field：

The utility model relates to wire and cable, specifically a kind of silicone rubber for cable.

Background technique：

At present in the distributing systems of the industrial and mining enterprises such as electric power, metallurgy, chemical industry, electronic computer system, automated system The fields such as signal transmission and detecting instrument, instrument, substantially being insulated using traditional flame-proof polyethylene, be fire-retardant as connecting line Pvc sheath and common silicone rubber for cable.Flame-proof polyethylene insulation, flame-proof polyvinyl chloride jacketed cable heatproof are 105 DEG C, common silicone rubber for cable high temperature resistant is only 180 DEG C.When fire occurs, cable is i.e. burned, has smoke amount high, has Halogen and toxic corrosive gas release, and are unfavorable for withdrawing and rescuing for personnel in this way, and due to there is the corrosivity gas such as halogen Vapor in the release and air of body, which combines, forms strong acid mist, is attached on electric device, serious to reduce equipment and ground connection The dielectric strength of line loop causes " secondary disaster ".

Summary of the invention：

To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a kind of silicone rubber for cable, are a kind of tools The environment-friendly cable of the standby performances such as high fire-retardance, fire prevention, low cigarette, Halogen, acid and alkali-resistance, resistant to chemical etching solves have fire some Generation dangerous situation institute using common cable there are the problem of.

The utility model solves technical problem and adopts the following technical scheme that：

A kind of silicone rubber for cable, its from-inner-to-outer are made of conductor, insulating layer, belting layer, shielded layer, outer jacket；

The outer extruded insulation layer of the conductor constitutes single insulated core, and a plurality of insulated core is twisted into cable core, and described Cable core gap filling has filled layer, and the filled layer uses glass fiber rope filled layer；

The conductor is tin plating copper core flexible conductor, and the insulating layer is Ceramic silicon rubber insulating layer, the cable core and is filled out It is wrapped by halogen-free flame-retardant glass fibre ribbons to fill the close wrapped belting layer, the belting layer outside layer.

Shielded layer described in the belting layer outer braid, the shielded layer is by tinned copper wire braid shielded, tinned copper wire list For silk diameter between 0.12-0.2mm, count is not less than 85%.

The outer jacket is extruded outside the shielded layer, the outer jacket is extruded by Ceramic silicon rubber to be formed.

The wrapped overlapping overlap rate of the belting layer is 20%-25%.

Compared with the prior art, the beneficial effects of the utility model are embodied in：

The conductor of cable uses the tin plating copper core flexible conductor of multiply, increases the fire resistant anticorrosive performance of cable conductor, simultaneously The conductor indium situation that cable occurs in hot environment use can be effectively prevented after tin plating.

Insulating layer and outer sheath material are all made of Ceramic silicon rubber material and extrude, which is with HTV silicon rubber Raw rubber is that substrate adds white carbon black, silicone oil, antistructurizing agent and other auxiliary agents, is kneaded by vacuum kneader, in open mill Ep-type material made of upper addition vulcanizer.The material has good electric property, nontoxic at normal temperature, tasteless, has Good flexibility and elasticity, have the feature of silicon rubber；Under flame condition, start to sinter heavily fortified point into after the 2~4min that burns The isolation layer of hard ceramic-like shell, this hard ceramic-like shell very effective can stop burning away for flame； And give up smoking completely after burned 2~4min, in next ablation process, there is no smog generations for itself；In early period 2~4min in generate smog be also Halogen, it is nontoxic.Because smog is mainly organosilicon, burning is generated, and organosilicon Itself is free of poisonous and harmful substance.

The shielded layer of cable is woven using tinned copper wire, and not oxidizable, interference free performance is more excellent；Filled layer and belting layer material Material is that not only have excellent flame retardant property, and be all free from the environmentally friendly material of halogen using halogen-free flameproof glass fibrous material Material.The flame retardant property of the utility model cable reaches bunchy A class combustion test as defined in GB/T 18380, the low smoke performance of cable According to experimental condition as defined in GB/T 17651, light transmittance reaches 85%, and the Halogen performance of cable is according to GB/T's 17650 Experimental condition, pH value are greater than 5.1, and conductivity is less than 1.2 μ s/mm.Hydrogen halide content 0.59mg/g.In short, the utility model is electric Cable has the performances such as high temperature resistant, fire prevention, low smoke, zero halogen, environmental protection, while having stable signal transfer functions, has wide city Field prospect.

Detailed description of the invention：

Fig. 1 is the cross-section structure of the utility model cable

Figure label：1 conductor, 2 insulating layers, 3 filled layers, 4 belting layers, 5 shielded layers, 6 outer jackets.

Below by way of specific embodiment, and in conjunction with attached drawing, the utility model is described in further detail.

Specific embodiment：

Embodiment：

Shown in Fig. 1, silicone rubber for cable described in the present embodiment, conductor 1 is using the 5th class or the plating of the multiply of the 6th class formation The form that tin copper wire bundle closes, filament diameter 0.15-0.30mm are formed using disposable bundle strand.Insulating layer 2 is using ceramic SiClx rubber Glue Insulation Material, its production process are produced completion on XJ85 rubber extruding machine, are squeezed out using plsitive mold, mill when mixing Machine has to logical cooling water, 30~35 DEG C of preceding roll temperature, 25~30 DEG C of rear roll temperature, 5~6mm of roll spacing.Temperature is 25 when extrusion ~30 DEG C, vulcanized after extrusion using baking oven, curing temperature is controlled at 170~280 DEG C.Insulated wire cores twisted synthesizing cable, cable core gap It is twisted using multiply glass fiber rope, glass fiber rope filled layer 3 is formed, by cable core gap filling rounding, close, wrapped one is overlapped outside cable core Layer halogen-free flame-retardant glass fibre ribbons constitute belting layer 4, and it is 20%-25% that overlap rate is overlapped when wrapped, and shielded layer 5 is compiled using tinned copper wire Knit shielding, filament diameter 0.12-0.2mm is completed on 16 ingots, 24 ingot high-speed knitters, braid angle general control 30~ Between 60 degree, count is controlled 85% or more by adjusting braid angle or lay of braiding.Outer jacket 6 is using ceramic SiClx Rubber material is also squeezed out using plsitive mold, its production process produces completion on XJ115 rubber extruding machine, using squash type Mold is squeezed out, and open mill has to logical cooling water, 30~35 DEG C of preceding roll temperature, 25~30 DEG C of rear roll temperature, roller when mixing Away from 5~6mm.Temperature is at 25~30 DEG C, 170~280 DEG C of curing temperature when extrusion.

Claims (3)

1. a kind of silicone rubber for cable, it is characterised in that：

Its from-inner-to-outer is made of conductor (1), insulating layer (2), belting layer (4), shielded layer (5), outer jacket (6)；

The outer extruded insulation layer (2) of conductor (1) constitutes single insulated core, and a plurality of insulated core is twisted into cable core, and in institute Stating cable core gap filling has filled layer (3), and the filled layer uses glass fiber rope filled layer；

The conductor (1) is tin plating copper core flexible conductor, and the insulating layer (2) is Ceramic silicon rubber insulating layer (2), the cable core It is wrapped by halogen-free flame-retardant glass fibre ribbons with filled layer (3) the external closely wrapped belting layer (4), the belting layer (4)；

Shielded layer (5) described in belting layer (4) outer braid, the shielded layer (5) is by tinned copper wire braid shielded, tin-coated copper For silk filament diameter between 0.12-0.2mm, count is not less than 85%.

2. a kind of silicone rubber for cable according to claim 1, which is characterized in that extruded outside the shielded layer (5) described Outer jacket (6), the outer jacket (6) is extruded by Ceramic silicon rubber to be formed.

3. a kind of silicone rubber for cable according to claim 1, which is characterized in that the belting layer (4) is by halogen-free flame-retardant glass The wrapped overlapping overlap rate of fibre ribbons is 20%-25%.