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A thermocompression forming method and mold for preparing a three-layer composite plastic sample

A technology of thermoforming and layer compounding, which is applied in the field of preparation of three-layer composite sheet plastic samples, which can solve the problem of uneven edges, uneven thickness of three-layer materials, and inaccurate measurement results of space charge distribution in insulating materials and other problems, to achieve the effect of improving accuracy and uniform electric field distribution

Active Publication Date: 2017-06-16
HARBIN UNIV OF SCI & TECH +1
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  • Description
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  • Application Information

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Problems solved by technology

When using ordinary flat molds and flat vulcanizers to make the above three-layer composite samples, the thickness of the three-layer materials is often uneven and the edges are not round, which leads to inaccurate measurement results of the space charge distribution in the insulating material

Method used

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  • A thermocompression forming method and mold for preparing a three-layer composite plastic sample
  • A thermocompression forming method and mold for preparing a three-layer composite plastic sample
  • A thermocompression forming method and mold for preparing a three-layer composite plastic sample

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Embodiment Construction

[0027] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Furthermore, it should be understood that development work, while potentially complex and time-consuming, would be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0028] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution ac...

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Abstract

The invention discloses a hot pressing forming method and a mold for preparing a three-layer composite plastic sample, belonging to the technical field of measurement and research of space charge distribution of insulating materials. The invention aims to solve the problem that the thickness of the three-layer material is not uniform and the edges are not rounded, resulting in inaccurate measurement results when a common plate mold and a plate vulcanizer are used to make a three-layer composite sample. The invention adopts the shielding layer mold to prepare the semiconductive shielding layer, the insulating layer mold to prepare the insulating layer, and the composite molding mold to hot-press the two semiconductive shielding layers and the insulating layer to obtain a three-layer composite plastic sample. The three-layer structure of the composite plastic sample of the present invention has sufficient bonding force, and the edges embedded in the sample on both sides are smooth and rounded, which can improve the accuracy of space charge distribution measurement.

Description

technical field [0001] The invention relates to a hot-press forming method and mold for a composite plastic sample, in particular to a method for preparing a three-layer composite sheet plastic sample used for measuring the space charge distribution of an insulating material and a mold for preparing the same, belonging to the insulating material space Field of charge distribution measurement research technology. Background technique [0002] Space charge will be generated in the insulating material under the action of DC high electric field due to factors such as electrode injection charge and impurity ionization. If the insulating material accumulates a large amount of space charge during use, the electric field distribution in it may be severely distorted, which will lead to accelerated aging and failure of the insulating material. Space charge poses a great threat to insulating materials and insulating equipment, especially has a significant impact on the dielectric prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C51/10B29C51/14B29C51/30
Inventor 李春阳韩宝忠张城城马凤莲傅明利侯帅
Owner HARBIN UNIV OF SCI & TECH
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