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Heat-shrinkable bus-bar protective sleeve and preparation method thereof

A technology for protecting sleeves and heat shrinking, applied in the field of heat shrinkable sleeves and their preparation, can solve the problems of easy cracking, difficult installation, poor mechanical properties, etc., and achieve the effects of not easy cracking, easy installation and replacement, and not easy to age.

Inactive Publication Date: 2014-04-16
CHANGYUAN ELECTRONICS DONGGUAN +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the present invention is used to solve the problems of poor mechanical properties, easy cracking and difficult installation of domestic busbar heat-shrinkable sleeves after aging, and provides a kind of heat-shrinkable sleeve that is not easy to age, not easy to crack, and easy to install and replace. Heat-shrinkable busbar protection sleeve and preparation method thereof

Method used

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  • Heat-shrinkable bus-bar protective sleeve and preparation method thereof
  • Heat-shrinkable bus-bar protective sleeve and preparation method thereof
  • Heat-shrinkable bus-bar protective sleeve and preparation method thereof

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preparation example Construction

[0042] The present invention also proposes a method for preparing the above-mentioned heat-shrinkable busbar protection sleeve, which includes the following steps:

[0043] Step 1: Weigh the following materials according to parts by weight: 100 parts of resin substrate; 80-95 parts of flame retardant, 2-5 parts of silicone masterbatch, 2-4 parts of filler, 2.5-3.5 parts of sensitizer, color 4-5 parts of masterbatch, 2-4 parts of antioxidant, 2-7 parts of lubricant;

[0044] Step 2: Put the non-elastomer and other components in the resin base material into the mixer and mix evenly, then pour into the internal mixer and knead at 90-120°C for 10-20min, then add the elastic material in the resin base material Turn over the internal mixer for 8-12 times to fully mix, mix the mixed raw materials with a twin-screw granulator for 1-3 times to ensure uniformity, then extrude, granulate, and pack. If the mixing is difficult, the raw materials can be added in batches for multiple mixing...

preparation Embodiment 1

[0050] Take the following components according to parts by weight:

[0051]

[0052]

[0053] Put the resin substrate except the elastomer into the mixer and mix evenly, then pour it into the internal mixer and knead at 90-120°C for 10-20min, then add the elastomer, turn the internal mixer 8-12 times to fully Mixing, mixing the mixed raw materials with a twin-screw granulator for 1-3 times to ensure uniformity, then extruding, granulating, and packaging. If the mixing is difficult, the raw materials can be added in batches for multiple mixing;

[0054] Use a 65#-90# single-screw extruder to extrude the semi-finished pipe at 85-140 ° C. The semi-finished product is not flattened, and it is placed on the plate in the form of a round tube. At the same time, the semi-finished product is cooled by spraying water mist on the whole pipe;

[0055] The extruded semi-finished product is irradiated with an electron accelerator or a source of energy above 4.5 MeV, and the cross-lin...

preparation Embodiment 2

[0057] Take the following components according to parts by weight:

[0058]

[0059]

[0060] Put the resin substrate except the elastomer into the mixer and mix evenly, then pour it into the internal mixer and knead at 90-120°C for 10-20min, then add the elastomer, turn the internal mixer 8-12 times to fully Mixing, mixing the mixed raw materials with a twin-screw granulator for 1-3 times to ensure uniformity, then extruding, granulating, and packaging. If the mixing is difficult, the raw materials can be added in batches for multiple mixing;

[0061] Use a 65#-90# single-screw extruder to extrude the semi-finished pipe at 85-140 ° C. The semi-finished product is not flattened, and it is placed on the plate in the form of a round tube. At the same time, the semi-finished product is cooled by spraying water mist on the whole pipe;

[0062] The extruded semi-finished product is irradiated with an electron accelerator or a source of energy above 4.5 MeV, and the cross-lin...

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Abstract

The invention discloses a heat-shrinkable bus-bar protective sleeve comprising the following components in parts by weight: 100 parts of a resin substrate, 80-95 parts of a flame retardant, 2-5 parts of silicone master batch, 2-4 parts of a filler, 2.5-3.5 parts of a sensitizing agent, 4-5 parts of a color master batch, 2-4 parts of an antioxidant and 2-7 parts of a lubricating agent, wherein the resin substrate is one or a mixture of two or more of the following substances: linear low density polyethylene, medium density polyethylene, high density polyethylene, ethylene propylene rubber, a POE (Polyolefin Elastomer), a TPEE (Thermoplastic Polyether Ester Elastomer), an ethylene-vinyl acetate copolymer, an ethylene-methyl acrylate copolymer, an ethylene ethyl acrylate copolymer and an ethylene butyl acrylate copolymer; and the flame retardant is one or a mixture of two or more of the following substances: aluminum hydroxide, magnesium hydroxide, melamine cyanurate, ammonium polyphosphate and melamine pyrophosphate. The heat-shrinkable bus-bar protective sleeve disclosed by the invention is unlikely to age and crack and easy to install and replace.

Description

technical field [0001] The invention introduces a heat-shrinkable sleeve and a preparation method thereof, which are mainly used in the insulation protection of power switch cabinets in power supply systems and busbars in substations. Background technique [0002] As we all know, busbar shrink sleeves are widely used in transformers and switchgears, mainly for insulation protection, reducing the volume of switchgear and other equipment and preventing small animals from getting an electric shock. During the "Twelfth Five-Year Plan" period, State Grid plans to invest a total of 1.5 trillion yuan in smart grids with an annual quota of 300 billion yuan, of which half will be used for distribution network construction and half for transmission network construction; The investment quota for network construction accounts for half of the distribution network investment. The relevant staff of the State Grid Corporation also said: 1.5 trillion yuan is expected, and the actual investm...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08L33/08C08K13/02C08K3/22C08K5/3492C08K13/06C08K9/00C08K3/34C08K3/26C08K5/134C08K5/098C08J3/28C08J3/24
CPCC08L23/0853B29C61/025C08J3/246C08J3/28C08J2323/08C08K2201/014C08L2203/18C08L2205/025C08L2205/035C08L2310/00C08L2312/06C08L23/0869C08L23/0815C08L83/04C08L23/12C08K13/02C08K2003/2224C08K5/34928C08L67/00C08K13/06C08K2003/2227C08K3/346C08L23/16C08L23/06
Inventor 徐成曾志安刘正根刘晓播邱光南李可涛
Owner CHANGYUAN ELECTRONICS DONGGUAN
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