Cross-linked cable process

Inert gas

Polyethylene insulation material with peroxy compound cross-linking agent added is used to complete the three-layer co-extrusion of the conductor shielding layer—insulating layer—after the insulation shielding layer is extruded, continuously and evenly cross-linked through a seal filled with high-temperature, high-pressure nitrogen gas. The tube completes the cross-linking process. The heat transfer medium is nitrogen (inert gas), cross-linked polyethylene has excellent electrical properties, and the production range can reach 500KV.

Silane Chemistry

Polyethylene insulation material added with silane cross-linking agent was used to complete the alien shield layer—insulation layer—after the extrusion of the insulation shield layer through the 1+2 extrusion method, and the insulated wire cores that had been cooled and immersed were immersed in 85- Hydrolysis cross-linking in hot water at 95 °C, due to wet cross-linking will affect the moisture content in the insulating layer. The general highest voltage level is only 10KV.

Latest technology

Application method of chemical crosslinking, irradiation cross-linking function mother particle

At present, the use of cross-linked functional parent particles of polyethylene cable can add a small amount of this functional parent particle to ordinary polyethylene cable particles, and the extruded cable can become a cross-linked cable.

There are three kinds of parent particles for the cross-linking function of the cable: chemical cross-linking function, electron beam irradiation cross-linking function, and ultraviolet light irradiation cross-linking function.

1. Cross-linking function mother particle for chemical cross-linked cable, Model: DH-125Y,

DH-125Y chemically cross-linked parent particles appear as colorless LLDPE plastic particles. Wire and cable factories only need to purchase common LLDPE polyethylene plastic particles on the market, such as LLDPE7042 and so on. Into 25 kg LLDPE7042 plastic particles, 1 kg of DH-125Y functional mother particles were added, and after being evenly turned by hand, the cable was directly put into the extruder of the cable and the cable was extruded to form a crosslinked wire and cable. This function of parent particles can produce cross-linked wire and cable up to 35KV.

2. Cross-linking function mother particle for electron beam irradiation cross-linked cable, Model: DH-125DF

The appearance of the DH-125DF electron beam irradiation crosslinking parent particles is colorless LLDPE plastic particles. 7042 plastic particles were added with 1 kg of DH-125DF functional masterbatch. After being evenly turned by hand, the cable was directly put into the extruder of the cable and the cable was extruded. The cross-linked wire and cable was made by electron beam irradiation. This function of parent particles can produce cross-linked wire and cable with long-term operating temperature of 125°C.

3. Cross-linking function mother particles for UV irradiation cross-linked cable, Model: DH-125ZF,

The appearance of the DH-125ZF ultraviolet radiation crosslinking parent particles is colorless LLDPE plastic particles. 7042 plastic particles are added with 1 kg of DH-125ZF functional mother particles. After being evenly turned by hand, the cable is directly put into the extruder of the cable and the cable is extruded. The cross-linked wire and cable is made by ultraviolet irradiation. The function of the parent particles can produce long-term working environment temperature of 125 °C cross-linked wire and cable.

advantage

1, save money:

Reduce costs and cable manufacturer directly, than the market purchase came in chemistry, radiation cross-linked polyethylene cable special material particle cheap 1500 to 3,000 yuan / ton.

2, save time;

The purchase of chemical and radiation cross-linked polyethylene cable special material particles by the cable manufacturer requires a time period of around one week for inquiry, ordering, production, and transportation. When using the DH-125 functional mother particle, after the production plan is decided, the cable production can be directly performed after 5 minutes of preparation.

3, versatility;

Cable manufacturers can adjust their own varieties, soft hardness: DH-125 function of the mother particles, not only can be added to ordinary polyethylene PE particles, can also be added to ordinary cable particles do not have cross-linking, so that the original does not have to pay The performance of ordinary plastic cable particles becomes cross-linked plastic particles.