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Hot-press forming method and mould for preparing 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 uniform electric field distribution and improved accuracy

Active Publication Date: 2015-08-26
HARBIN UNIV OF SCI & TECH +1
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  • Abstract
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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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  • Hot-press forming method and mould for preparing three-layer composite plastic sample
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  • Hot-press forming method and mould for preparing 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-press forming method and mould for preparing a three-layer composite plastic sample, belongs to the technical field of insulating material space charge distribution measurement and research, and aims to solve the problems that, when an ordinary plate mould and a plate vulcanizing machine are used to make the three-layer composite sample, the three-layer material is uneven in thickness, the edges are not rounded, and accordingly the measurement results are not accurate. According to the hot-press forming method and mould, provided by the invention, a shielding layer mould is adopted to prepare a semi-conductive shielding layer, an insulating layer mould is adopted to prepare an insulating layer, and a composite forming mould is used to hot-press two semi-conductive shielding layers and the insulating layer to obtain the three-layer composite plastic sample. Enough binding force is achieved among the three-layer structure of the composite plastic sample, the embedding samples on both sides are round and smooth, so that the accuracy of the space charge distribution measurement is improved.

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 Charge distribution measurement research technology field. 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 propert...

Claims

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Application Information

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Patent Type & Authority Applications(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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