Composite insulating material, casting busway and preparation method of composite insulating material

A composite insulation and busbar technology, which is applied in the field of cast-type busbars and their preparation, and composite insulating materials, can solve the problems of damage to the connector busbar unit, use, and easy water entry of the shell, and achieves excellent withstand current strength, Simple operation process and no chimney effect

Active Publication Date: 2014-01-22
广州市半径电力铜材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the connectors between the busway units, the elbows of the shells are prone to water ingress, or humid air to reduce the insulation, or directly cause a short circuit; in serious cases, the connectors may explode, and even the connector itself and it The two connected busway unit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In this embodiment, a composite insulating material is prepared from the following raw materials in parts by weight: Epoxy resin E441kg, polyurethane curing agent 0.7kg, flame retardant CDP0.12kg, accelerator DMP-300.08kg, toughening agent nitrile rubber -260.12kg, defoamer AY-2150.005kg, aluminum hydroxide 0.3kg and silicon micropowder 0.28kg;

[0062] The preparation method of the casting type bus duct adopting the above-mentioned composite insulating material comprises the following steps:

[0063] (1) Assemble the mold, apply the release agent, then install the conductor into the mold and install the conductor fixing bracket;

[0064] (2) Mix, stir and vacuumize the raw materials of the composite insulating material according to the ratio at room temperature to obtain the mixture;

[0065] The hybrid method includes the following steps:

[0066] ① fully mix epoxy resin, flame retardant, toughening agent and silicon micropowder to obtain compound 1;

[0067] ②Compou...

Embodiment 2

[0078] In this embodiment, a composite insulating material is prepared from the following raw materials in parts by weight: epoxy resin E442kg, polyurethane curing agent 1.5kg, flame retardant CDP0.30kg, accelerator DMP-300.25kg, toughening agent nitrile rubber -260.3kg, defoamer AY-2150.006kg, aluminum hydroxide 0.75kg and silicon micropowder 0.56kg;

[0079] The preparation method of the pouring type bus duct comprising the above-mentioned insulating resin comprises the following steps:

[0080] (1) Assemble the mold, apply the release agent, then install the conductor into the mold, and install the conductor fixing bracket;

[0081] (2) Mix, stir and vacuumize the raw materials of insulating resin according to the ratio at room temperature to obtain the mixture;

[0082] The hybrid method includes the following steps:

[0083] ① fully mix epoxy resin, flame retardant, toughening agent and silicon micropowder to obtain compound 1;

[0084] ②Compound 2 that fully mixes cur...

Embodiment 3

[0095] In this embodiment, a composite insulating material-FHL is prepared from the following raw materials in parts by weight: Epoxy resin E4420kg, polyurethane curing agent 16kg, flame retardant CDP2.6kg, accelerator DMP-301.2kg, toughening agent butyronitrile Rubber-261.6kg, defoamer AY-2150.12kg, aluminum hydroxide 6.6kg and silica powder 5kg;

[0096] The preparation method of the pouring type bus duct comprising the above-mentioned insulating resin comprises the following steps:

[0097] (1) Assemble the mold, apply the release agent, and then install the conductor into the mold;

[0098] (2) Mix, stir and vacuumize the raw materials of insulating resin according to the ratio at room temperature to obtain the mixture;

[0099] The hybrid method includes the following steps:

[0100] ① fully mix epoxy resin, flame retardant, toughening agent and silicon micropowder to obtain compound 1;

[0101] ②Compound 2 that fully mixes curing agent, accelerator, aluminum hydroxide...

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Abstract

The invention discloses a composite insulating material, a casting busway and a preparation method of the composite insulating material. The composite insulating material is prepared from the following raw materials in parts by weight: 100 parts of epoxy resin, 35-80 parts of curing agent, 12-15 parts of flame retardant, 6-10 parts of promoter, 10-18 parts of flexibilizer, 0.3-0.7 part of defoaming agent, 30-38 parts of aluminium hydroxide and 20-28 parts of silica powder, wherein the epoxy resin is one or more than one of bisphenol A epoxy resin, bisphenol F epoxy resin, bisphenol S epoxy resin, epoxidation polybutadiene and phenol aldehyde epoxy resin; the curing agent is one or more than one of imidazole curing agent, amine curing agent and anhydride curing agent. The casting busway comprising the composite insulating material has the advantages that insulation resistance can be more than 500Mohm, and a withstand voltage can be more than 5KV; waterproofness is good, the casting busway can be used in water and is resistant to acid, alkali and corrosion and is flame retardant; protection grade is IP68, and short-time tolerant current intensity is better than that of the existing aluminium alloy shell or other metal shell busways.

Description

technical field [0001] The invention relates to the technical field of polymer materials and the field of power supply and distribution equipment, in particular to a composite insulating material, a casting type bus duct and a preparation method thereof. Background technique [0002] At present, the shells of ordinary bus ducts are made of aluminum alloy or iron shells, and the conductors (copper bars or aluminum bars) are covered with polyester film as insulators. For the connectors between the busway units, the elbows of the shells are prone to water ingress, or humid air to reduce the insulation, or directly cause a short circuit; in serious cases, the connectors may explode, and even the connector itself and it The two connected busway units were badly damaged beyond repair. All three parts can only be replaced with new ones. This aluminum alloy or iron shell bus duct cannot be used in a humid environment for a long time, let alone in water, and cannot be used in an en...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/02C08K3/22C08K3/36C08K5/523B29C39/02
Inventor 方强陈庆周夏超
Owner 广州市半径电力铜材有限公司
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