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Heat shrinkage integral umbrella skirt for heat shrinkage terminal and preparation method thereof

A terminal head, heat-shrinkable technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of short life, low hardness of cold-shrinkable terminal head, poor weather resistance, etc., and achieve excellent chemical resistance stability, excellent Effects of chemical resistance and excellent solvent resistance

Inactive Publication Date: 2018-06-08
CHANGYUAN ELECTRONICS DONGGUAN +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to overcome the defects of low hardness, short service life and poor weather resistance of existing cold-shrinkable terminals, and provide a 27.5kV heat-shrinkable terminal for electrified railways with high hardness, long service life and good resistance to electric carbon marks Heat-shrinkable integral shed for head and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Heat shrinkage integral umbrella skirt for heat shrinkage terminal and preparation method thereof
  • Heat shrinkage integral umbrella skirt for heat shrinkage terminal and preparation method thereof
  • Heat shrinkage integral umbrella skirt for heat shrinkage terminal and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0041] The preparation method of the heat-shrinkable integral shed shed for the 27.5kV heat-shrinkable terminal head of the above-mentioned electrified railway comprises the following steps:

[0042] Step 1: Weigh 60-80 parts of ethylene-propylene rubber-silicone rubber copolymer, 20-40 parts of ethylene copolymer, 50-70 parts of surface-modified aluminum hydroxide, 20-30 parts of heat conducting agent, antioxidant 1-3 parts, 2-5 parts of lubricant, 4-6 parts of color masterbatch, 1-3 parts of main crosslinking agent, 1-2 parts of auxiliary crosslinking agent;

[0043] Step 2: Except for the main cross-linking agent and auxiliary cross-linking agent, the weighed materials are mixed and processed into masterbatch semi-finished products through internal mixer and single-screw combination equipment;

[0044] Step 3: Stir and homogenize the masterbatch semi-finished product obtained in step 2 with a high-speed mixer, and then granulate through a parallel twin-screw extruder;

[004...

preparation Embodiment 1

[0049] Step 1, weigh the following components by parts by weight:

[0050]

[0051] Step 2: Except for the cross-linking agent, the weighed material is mixed and processed into a masterbatch semi-finished product through an internal mixer and a single-screw combination equipment.

[0052] Step 3: Stir and homogenize the semi-finished masterbatch in the previous step with a high-speed mixer, and then granulate through a parallel twin-screw extruder.

[0053] Step 4: Add the main cross-linking agent and auxiliary cross-linking agent to the semi-finished masterbatch in the previous step, and then mix and process it into a masterbatch through an internal mixer and a single-screw combination equipment.

[0054] Step 5: Inject the masterbatch below its vulcanization and crosslinking temperature into the overall shed mold through an injection molding machine. The mold temperature is set at 150-180° C., and it is vulcanized and cross-linked for 5-8 minutes.

[0055] Step 6: The c...

preparation Embodiment 2

[0061] Step 1, weigh the following components by parts by weight:

[0062]

[0063] Step 2: Except for the cross-linking agent, the weighed material is mixed and processed into a masterbatch semi-finished product through an internal mixer and a single-screw combination equipment.

[0064] Step 3: Stir and homogenize the semi-finished masterbatch in the previous step with a high-speed mixer, and then granulate through a parallel twin-screw extruder.

[0065] Step 4: Add the main cross-linking agent and auxiliary cross-linking agent to the semi-finished masterbatch in the previous step, and then mix and process it into a masterbatch through an internal mixer and a single-screw combination equipment.

[0066] Step 5: Inject the masterbatch below its vulcanization and crosslinking temperature into the overall shed mold through an injection molding machine. The mold temperature is set at 150-180° C., and it is vulcanized and cross-linked for 5-8 minutes.

[0067] Step 6: The c...

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Abstract

The invention relates to a heat shrinkage integral umbrella skirt for a heat shrinkage terminal. The heat shrinkage integral umbrella skirt is prepared from the following ingredients in parts by weight: 60 to 80 parts of ethylene propylene rubber-silicone rubber copolymers, 20 to 40 parts of ethylene copolymers, 50 to 70 parts of surface modified aluminum hydroxide, 20 to 30 parts of heat conduction agents, 1 to 3 parts of antioxidants, 2 to 5 parts of lubricating agents, 4 to 6 parts of color masterbatch, 1 to 3 parts of main crosslinkers and 1 to 2 parts of auxiliary crosslinkers. The ethylene propylene rubber-silicon rubber copolymers are formed by mixing organic silicon raw rubber and high-purity silicon dioxide with modified ethylene propylene rubber. The integral umbrella skirt provided by the invention has the advantages that the whole insulation performance is good; the hardness is high; the electric mark resistance and corrosion damage resistance performance is good; when theheat shrinkage integral umbrella skirt is arranged on an electric railway 27.5 kV heat shrinkage terminal, the creepage distance of the terminal is increased; the service life of the heat shrinkage terminal is long; the safety is high.

Description

technical field [0001] The invention relates to an integral shed and a preparation method thereof, in particular to an integral shed which can be used for a 27.5kV heat-shrinkable terminal head of an electrified railway and a preparation method thereof, which belongs to a heat-shrinkable climber. The heat-shrinkable overall shed of the invention has good insulation performance, high hardness, good resistance to electric tracking and corrosion, and can be installed on the 27.5kV heat-shrinkable terminal head of the electrified railway to improve its creepage distance, and the heat-shrinkable terminal head has a long service life and safety high. Background technique [0002] The heat-shrinkable integral shed is applied to the roof of the electrified railway locomotive to increase the creepage distance of the heat-shrinkable terminal and to provide insulation protection. With the development of electric drive technology for railway rail transit equipment, all electric locomot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L83/04C08L23/08C08K13/06C08K9/06C08K3/22C08K5/134C08K5/09C08K5/14C08K5/098C08K9/04C09K5/14
CPCC08K2003/2227C08L23/16C08L83/04C08L2201/02C08L2201/12C08L2205/03C09K5/14C08L23/0853C08K13/06C08K9/06C08K3/22C08K5/1345C08K5/09C08K5/14C08K9/04C08K5/098
Inventor 吴松金刘军鲁尔军明安慧李俊森
Owner CHANGYUAN ELECTRONICS DONGGUAN
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