阅读说明：本技术 一种导电胶体积电阻率的测试装置及测试方法 (Testing device and testing method for conductive colloid accumulated resistivity ) 是由 盛永清 陈素明 郑超 于 2021-05-19 设计创作，主要内容包括：一种导电胶体积电阻率的测试装置及测试方法,测试装置含有绝缘块本体和电极导线,所述的绝缘块本体是一个平板结构,绝缘块本体的上表面设有多个并列的、等截面、等体积的导电胶沟槽,在导电胶沟槽的两端分别镶嵌有一个电极导线,每个导电胶沟槽两端的电极导线可以分别与欧姆表电连接,通过欧姆表测出导电胶沟槽内导电胶的电阻值；根据导电胶沟槽内导电胶的体积和电阻值计算出导电胶的体积电阻率。(A testing device and a testing method for conductive adhesive volume resistivity, wherein the testing device comprises an insulating block body and electrode leads, the insulating block body is of a flat plate structure, the upper surface of the insulating block body is provided with a plurality of parallel conductive adhesive grooves with equal cross sections and equal volumes, two ends of each conductive adhesive groove are respectively embedded with one electrode lead, the electrode leads at two ends of each conductive adhesive groove can be respectively and electrically connected with an ohmmeter, and the resistance value of the conductive adhesive in each conductive adhesive groove is measured by the ohmmeter; and calculating the volume resistivity of the conductive adhesive according to the volume and the resistance value of the conductive adhesive in the conductive adhesive groove.)

1. The utility model provides a testing arrangement of conductive adhesive volume resistivity which characterized in that contains insulating block body and electrode wire, the insulating block body be a flat structure, the upper surface of insulating block body is equipped with a plurality of parallel, equal cross-section, isovolumic conductive adhesive slot, inlays respectively at the both ends of conductive adhesive slot and has an electrode wire, the electrode wire at every conductive adhesive slot both ends can be connected with the ohmmeter electricity respectively.

2. The device for testing the resistivity of conductive paste according to claim 1, wherein the tip of the electrode lead is extended into the conductive paste groove by 3mm to 5 mm.

3. The device for testing the conductive paste volume resistivity of claim 1, wherein the conductive paste groove has a size of 0.4cm by 15 cm.

4. A method for testing the volume resistivity of a conductive colloid is characterized by comprising the following steps: 1) a test apparatus using the conductive paste volume resistivity of claims 1 to 4; 2) filling conductive adhesive in the conductive adhesive groove; 3) respectively embedding an electrode lead in the conductive adhesive at two ends of the conductive adhesive groove; 3) connecting electrode wires connected with two ends of the conductive adhesive to an ohmmeter; 4) measuring the resistance value of the conductive adhesive in the conductive adhesive groove through an ohmmeter; 5) and calculating the volume resistivity of the conductive adhesive according to the volume and the resistance value of the conductive adhesive in the conductive adhesive groove.

5. The method for testing the volume resistivity of conductive paste according to claim 4, wherein the same conductive paste is filled in the plurality of conductive paste trenches, respectively, and the resistance value of the conductive paste in each conductive paste trench is tested, respectively, the volume resistivity of the plurality of conductive pastes is calculated according to the volume of the conductive paste in each conductive paste trench and the corresponding resistance value, and then the volume resistivity of the conductive paste is averaged to obtain the volume resistivity of the conductive paste.

Technical Field

The application relates to a conductive adhesive testing technology, in particular to a testing device and a testing method for the volume resistivity of a conductive adhesive.

Background

The conductive adhesive is an adhesive which has certain adhesive property and conductive property after being cured. It can connect multiple conductive materials together to form an electrical path between the connected materials. The research of the domestic conductive adhesive is late, the high-performance conductive adhesive mainly depends on import, and the most widely applied conductive adhesive is silver conductive adhesive.

The volume resistivity is an important index for measuring the performance of the conductive adhesive. In the formula ρ ═ R × S/L, ρ is a physical quantity depending on the conductor material and temperature, that is, the resistivity of the material, R is the measured resistance of the conductive paste, S is the cross-sectional area of the conductive paste, and L is the length of the conductive paste.

When an airplane flies, the surface of the airplane body is electrified due to friction with dust and the like. The generated charges need to be released in time, and the static electricity releasers arranged on the wings and other parts can stably release the static charges on the airplane body in a noise reduction mode, so that the corona threshold voltage on the surface of the airplane body is effectively reduced. The electrostatic discharge must be mounted using conductive paste. In aircraft manufacturing, the volume resistivity of the conductive adhesive must be measured before use. In the prior art, the international standard for volume resistivity detection of conductive adhesives that can be queried is ASTM D2739 "standard test method for volume electronic rate of conductive adhesives", but it requires a special test apparatus and a jig head. Therefore, a portable device and method for testing the volume resistivity of the conductive adhesive at the production site are highly needed.

Disclosure of Invention

The application aims to provide a testing device and a testing method for the volume resistivity of a conductive colloid so as to meet the requirement of aircraft production.

The utility model provides a testing arrangement of conductive adhesive volume resistivity which characterized in that contains insulating block body and electrode wire, the insulating block body be a flat structure, the upper surface of insulating block body is equipped with a plurality of parallel, equal cross-section, isovolumic conductive adhesive slot, inlays respectively at the both ends of conductive adhesive slot and has an electrode wire, the electrode wire at every conductive adhesive slot both ends can be connected with the ohmmeter electricity respectively.

The application also provides a method for testing the volume resistivity of the conductive colloid, which is characterized by comprising the following steps: 1) the device for testing the volume resistivity of the conductive colloid is used; 2) filling conductive adhesive in the conductive adhesive groove; 3) respectively embedding an electrode lead in the conductive adhesive at two ends of the conductive adhesive groove; 3) connecting electrode wires connected with two ends of the conductive adhesive to an ohmmeter; 4) measuring the resistance value of the conductive adhesive in the conductive adhesive groove through an ohmmeter; 5) and calculating the volume resistivity of the conductive adhesive according to the volume and the resistance value of the conductive adhesive in the conductive adhesive groove.

The beneficial effect of this application lies in: the device for testing the volume resistivity of the conductive adhesive is simple in structure and convenient to use, a standard groove is formed in the insulating block body, the conductive adhesive is filled in the standard groove, the resistance of the conductive adhesive is tested by using an ohmmeter, the volume resistivity of the conductive adhesive can be calculated according to the tested resistance and the volume of the conductive adhesive in the groove, and the volume resistivity value of the conductive adhesive can be quickly obtained on a production site in time and conveniently.

The present application is described in further detail below with reference to the accompanying drawings of embodiments.

Drawings

FIG. 1 is a schematic diagram of the testing apparatus and testing method for the volume resistivity of conductive gel.

The numbering in the figures illustrates: 1 insulating block body, 2 grooves, 3 conductive adhesives and 4 ohm meters.

Detailed Description

Referring to the accompanying drawings, the device for testing the conductive adhesive volume resistivity of the application comprises an insulating block body 1 and electrode leads, wherein the insulating block body 1 is of a flat plate structure, a plurality of parallel grooves 2 which are equal in cross section and volume and can be filled with conductive adhesive are arranged on the upper surface of the insulating block body 1, the two ends of each conductive adhesive groove are respectively embedded with one electrode lead, and the electrode leads at the two ends of each conductive adhesive groove can be respectively and electrically connected with an ohmmeter 4.

In the implementation, the insulating block body 1 adopts insulating plates which are easily obtained such as phenolic compounds, a rectangular groove with the size of 0.4cm x 15cm is prepared on the upper surface of the insulating plate, and the end of the electrode lead is required to extend into the conductive adhesive groove by 3mm-5 mm. The conductive adhesive groove has a standard volume, and the volume of the conductive adhesive groove can be of other sizes.

When the conductive adhesive volume resistivity is tested, filling the conductive adhesive in the conductive adhesive groove of the testing device; paying attention to the fact that the surface of the conductive adhesive is smooth, and embedding an electrode wire in the conductive adhesive at two ends of the conductive adhesive groove respectively; after the conductive adhesive is solidified, connecting electrode leads connected with two ends of the conductive adhesive to an ohm meter 4; after the ohm meter 4 is reset to zero, measuring the resistance value of the conductive adhesive in the conductive adhesive groove through the ohm meter; and finally, calculating the volume resistivity of the conductive adhesive according to the volume and the resistance value of the conductive adhesive in the conductive adhesive groove.

In order to achieve accurate testing, the same conductive adhesive is filled in a plurality of conductive adhesive grooves of a testing device, the resistance value of the conductive adhesive in each conductive adhesive groove is tested, the volume resistivity of the conductive adhesives is calculated according to the volume of the conductive adhesive in each conductive adhesive groove and the corresponding resistance value, and the volume resistivity of the conductive adhesive is obtained by averaging the volume resistivities of the conductive adhesives.