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New material cable insulation sleeve production process

A cable insulation and production process technology, applied in the direction of conductor/cable insulation, insulators, circuits, etc., can solve the problems of reducing production efficiency and production quality, unable to meet actual production, long cross-linking time, etc., to reduce cross-linking. cost, superior mechanical and electrical properties, and the effect of improving product quality

Inactive Publication Date: 2021-04-30
ANHUI HUABAO CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing insulating sleeve processing technology has the problems of long cross-linking time and high cross-linking cost, which will reduce production efficiency and production quality, so it cannot meet the needs of actual production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new material cable insulation sleeve production process. The new material cable insulation sleeve material uses irradiated cross-linked polyethylene and irradiated polyolefin particles to replace the traditionally used silane cross-linked polyethylene and polyolefin particle materials. It has a better cross-linking effect. good points.

[0028] The production process steps are as follows:

[0029] The first step: heating and mixing, heating and mixing the irradiated cross-linked polyethylene and the irradiated polyolefin particles;

[0030] The second step: injecting into the extruder, injecting the mixed material of irradiated cross-linked polyethylene and irradiated polyolefin particles into the extruder;

[0031] The third step: extrusion molding, the extruder extrudes the mixed material into molding;

[0032] The fourth step: ultraviolet light irradiation, using ultraviolet light to irradiate the insulating sleeve at the exit of the extruder;

[0033] The fifth...

Embodiment 2

[0035] In the heating and mixing stage, the irradiated cross-linked polyethylene and irradiated polyolefin particles are heated and mixed, and the irradiated cross-linked polyethylene and irradiated polyolefin particles are put into the mixing tank according to the ratio of 40% and 20% respectively, and 5 % flame retardant and 0.5-5% antioxidant, the stirring rod in the mixing tank is driven by the motor to rotate, and the mixed raw materials are fully stirred, so that the raw materials are fully mixed, and the inside of the mixing tank is passed through 85-100 ℃ High-temperature gas increases the molecular activity between raw materials, thereby speeding up the uniformity of mixing, facilitating subsequent processing, and improving the quality of raw materials;

[0036] The performance of polyethylene modified by cross-linking can be greatly improved, not only significantly improving the comprehensive properties of polyethylene, such as mechanical properties, environmental str...

Embodiment 3

[0039] After the mixing tank heats and mixes the materials, the mixed materials are injected into the extruder;

[0040] The inside of the extruder is driven by a screw, and the mixed material is extruded along the outlet of the extruder to form a tubular insulating sleeve.

[0041] A ring-shaped LED ultraviolet irradiation lamp tube is set outside the exit of the extruder, and the LED ultraviolet irradiation lamp tube emits ultraviolet rays to irradiate the extruded insulating sleeve, which can change the polymer structure of the raw material inside the insulating tube from linear to mesh after cross-linking structure, and then the material undergoes a property change, from melting to non-melting, thereby improving high temperature resistance and strength;

[0042] By irradiating the insulating sleeve with ultraviolet rays, the chemical structure of the polymer can be changed, and the crosslinking can be completed in a short time, so that the insulating sleeve has more superi...

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Abstract

The invention discloses a new material cable insulation sleeve production process, the new material cable insulation sleeve material selects irradiation crosslinked polyethylene and irradiation polyolefin particles, the production process comprises the following steps of: 1, heating and mixing: heating and mixing irradiation crosslinked polyethylene and irradiation polyolefin particles; 2, injection into an extruder, namely injecting the fused irradiation crosslinked polyethylene and irradiation polyolefin particle mixed material into the extruder; 3, extrusion molding: carrying out extrusion molding on the mixed material by the extruder; 4, ultraviolet irradiation: irradiating an insulation sleeve at the outlet of the extruder by adopting ultraviolet light; and 5, cooling and molding, namely cooling and rolling the irradiated insulation sleeve. The insulation sleeve is crosslinked in an LED ultraviolet irradiation mode, the chemical structure of a polymer is changed, crosslinking is carried out in a short time, the insulating sleeve has better mechanical performance and electrical performance, the crosslinking time is shortened, the crosslinking cost is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of cable insulating sleeve processing, in particular to a production process of a new material cable insulating sleeve. Background technique [0002] Cable insulation sheath tube is a commonly used heat shrinkable sleeve for insulation protection on cables. The main material of this type of product is PE. After two processes of radiation cross-linking and heating expansion, it has the function of heat shrinkage and can be used as cable accessories. Heat-shrinkable inner sheath, outer sheath, and outer insulating and waterproof sheath. Radiation cross-linked heat-shrinkable sheathing tubes are usually used for insulation protection of medium and low voltage power products and waterproofing of communication products. , You can choose products with no glue on the inner wall and glued inner wall. [0003] After a large number of searches, the prior art was found. The publication number is CN102969091A, which d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01B13/06
CPCH01B13/06H01B19/00
Inventor 后学才
Owner ANHUI HUABAO CABLE
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