Polyethylene insulating material for high-speed extrusion, and preparation method thereof

Abstract

The present invention belongs to the technical field of electric cable materials, and more particularly relates to a polyethylene insulating material for high-speed extrusion, and a preparation method thereof. The polyethylene insulating material comprises the following components by weight: 100 parts of a polyethylene resin, 12-35 parts of a high-speed extrusion accelerator, 0.5-2.5 parts of a lubricant, 0.3-0.8 part of an antioxidant, and 1-3 parts of a weathering resistant masterbatch. The present invention further provides a preparation method of the polyethylene insulating material. According to the present invention, the polyethylene insulating material has excellent extrusion processing performance, especially can ensure the smooth and delicate surface during the high-speed extrusion, and can effectively improve the electric cable production efficiency under the premise of the ensuring of the product quality, such that the application range of the polyethylene insulating material can be effectively expanded, the use of the imported electric cable material can be reduced, the cost can be saved, and the competitive power in the market can be improved.

Description

technical field

[0001] The invention belongs to the technical field of cable materials, and in particular relates to a polyethylene insulating material suitable for high-speed extrusion and a preparation method thereof. Background technique

[0002] As a supporting industry of the power industry, one of the pillar industries of the national economy, the wire and cable industry plays an extremely important role and position in the national economy. Polyethylene cable material is widely used in the field of wire and cable because of its light weight, good mechanical properties, very good low temperature resistance, good environmental stress cracking resistance, good processability, and excellent electrical insulation properties. has a very wide range of applications. Polyethylene cable material is one of the indispensable important components in cable material.

[0003] With people's in-depth research on polyethylene cable materials and the increasing requirements for the pe...

Examples

Embodiment 1

[0053] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0054]

[0055]

[0056] Select the raw materials for each component according to the stated ratio, mix the accurately weighed resin and additives fully in a high-speed mixer, and then extrude them in a feeding extrusion granulation mixing type twin-screw extrusion granulator. For granulation, the extrusion temperature of the twin-screw extruder is 145-205°C, and the temperature of the twin-screw extruder is set as: 145-155°C in the feeding section, 160-185°C in the mixing section, extruding The temperature of the granulation section is 185-195°C, and the head part is 195-205°C. Drying after granulation, the drying temperature is 60-95° C., and the drying time is 1-3 hours, and the pellets for cables are obtained. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 2

[0058] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0059]

[0060] Select raw materials for each component according to the stated ratio, fully mix the accurately weighed resin and additives in a high-speed mixer at a speed of 500-1000 rpm, the mixing temperature of the high-speed mixer is 50°C, and the mixing time is 15 minutes . Extrude and granulate in a feed extrusion granulation mixing type twin-screw extrusion granulator, the extrusion temperature of the twin-screw extruder is 155-200 ° C, the temperature setting of the twin-screw extruder It is: 155°C in the feeding section, 180°C in the mixing section, 190°C in the extrusion granulation section, and 200°C in the head part. Drying after granulation, the drying temperature is 80° C., and the drying time is 2 hours, to obtain granules for cables. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 3

[0062] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0063]

[0064] Processes such as mixing and extrusion granulation are the same as in Example 1. The composition and weight ratio of the raw material components are shown in Table 1.

technical field

[0001] The invention belongs to the technical field of cable materials, and in particular relates to a polyethylene insulating material suitable for high-speed extrusion and a preparation method thereof. Background technique

[0002] As a supporting industry of the power industry, one of the pillar industries of the national economy, the wire and cable industry plays an extremely important role and position in the national economy. Polyethylene cable material is widely used in the field of wire and cable because of its light weight, good mechanical properties, very good low temperature resistance, good environmental stress cracking resistance, good processability, and excellent electrical insulation properties. has a very wide range of applications. Polyethylene cable material is one of the indispensable important components in cable material.

[0003] With people's in-depth research on polyethylene cable materials and the increasing requirements for the pe...

Examples

Embodiment 1

[0053] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0054]

[0055]

[0056] Select the raw materials for each component according to the stated ratio, mix the accurately weighed resin and additives fully in a high-speed mixer, and then extrude them in a feeding extrusion granulation mixing type twin-screw extrusion granulator. For granulation, the extrusion temperature of the twin-screw extruder is 145-205°C, and the temperature of the twin-screw extruder is set as: 145-155°C in the feeding section, 160-185°C in the mixing section, extruding The temperature of the granulation section is 185-195°C, and the head part is 195-205°C. Drying after granulation, the drying temperature is 60-95° C., and the drying time is 1-3 hours, and the pellets for cables are obtained. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 2

[0058] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0059]

[0060] Select raw materials for each component according to the stated ratio, fully mix the accurately weighed resin and additives in a high-speed mixer at a speed of 500-1000 rpm, the mixing temperature of the high-speed mixer is 50°C, and the mixing time is 15 minutes . Extrude and granulate in a feed extrusion granulation mixing type twin-screw extrusion granulator, the extrusion temperature of the twin-screw extruder is 155-200 ° C, the temperature setting of the twin-screw extruder It is: 155°C in the feeding section, 180°C in the mixing section, 190°C in the extrusion granulation section, and 200°C in the head part. Drying after granulation, the drying temperature is 80° C., and the drying time is 2 hours, to obtain granules for cables. The composition and weight ratio of the raw material components are shown in Table 1.

Embodiment 3

[0062] In the cable material formula, the name of each component and the proportion of each component by weight are as follows:

[0063]

[0064] Processes such as mixing and extrusion granulation are the same as in Example 1. The composition and weight ratio of the raw material components are shown in Table 1.

Images