Simulation test method for influence of silicone grease on contraction of cold-shrinkable cable accessory
A technology of simulation testing and cable accessories, which is applied in measuring devices, color/spectral characteristic measurement, material analysis through optical means, etc., can solve the problems of low application reference significance, achieve strong popularity, intuitive and accurate test results, and test The method is concise and general effect
Active Publication Date: 2021-12-07
山东七星电气科技发展有限公司
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Problems solved by technology
The current test method for silicone grease is to make a test piece of silicone rubber with cold shrinkable accessories and soak it in silicone grease for testing. There are certain differences in the products of shrinkage accessories, and the amount of silicone grease immersed in the test piece is also different from the amount applied in the actual construction process. The reference value of silicone grease application in accessories is not high
Method used
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Experimental program
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Effect test
Embodiment 1-4
[0051] Examples 1-4 all adopt the test method shown above, wherein the selected cold shrinkable tube is No. 1 cold shrinkable tube produced by Shandong Qixing Electric Technology Development Co., Ltd. Requirements for cold-shrinkable cable accessories; 3 sample samples are made for each embodiment, and Fushunda is used in Embodiment 1 L55 / 2 grease; Embodiment 2 has adopted OFX-0203 alkylphenyl silicone oil; Embodiment 3 has adopted DR-905 insulating grease (manufacturer is Shenzhen Yi Derun Technology Co., Ltd.); Embodiment 4 has adopted DR-49F fluorosilicone grease (manufactured by Shenzhen Yiderun Technology Co., Ltd.); the indicators of the silicone grease used in Examples 1-4 all meet the relevant national standards for insulating grease for cold-shrinkable cable accessories, as shown in the following table As shown in 1:
[0052] Table 1 Main performance indicators of insulating grease for installation
[0053]
[0054]
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Abstract
The invention belongs to the technical field of silicone grease testing, and particularly relates to a simulation test method for influence of silicone grease on contraction of a cold-shrinkable cable accessory. The swelling rate of the silicone grease is tested by adopting a thermal aging experiment method, and comparing is carried out to acquire the shrinkage rate equal to (the diameter after shrinkage of the silicone grease region-the diameter after shrinkage of the silicone grease-free region) / the diameter after shrinkage of the silicone grease-free region * 100%. According to the simulation test method for influence of silicone grease on contraction of the cold-shrinkable cable accessory, the most common silicone rubber cold-shrinkable product cold-shrinkable tube is selected as a test sample, a silicone rubber test piece does not need to be manufactured, the material selection of the test piece is simple and common, the influence of temperature, vulcanization, environment and the like during manufacturing of the silicone rubber test piece is overcome, the problem that the silicone rubber test piece and the cold-shrinkable cable accessory product are different is solved, and the accuracy, authenticity and applicability of the test result are improved.
Description
technical field [0001] The invention belongs to the technical field of silicone grease testing, and in particular relates to a retraction simulation test method for silicone grease affecting cold-shrinkable cable accessories. Background technique [0002] Silicone grease is a substance that is coated on the composite insulation interface of cold-shrinkable cable accessories and cable main insulation during installation to lubricate, seal and improve the breakdown strength of the composite interface. Therefore, silicone grease is a necessary accessory material in the installation process of cold shrinkable cable accessories. [0003] The swelling rate of silicone grease is one of the important parameters of silicone grease performance. In principle, under the premise of meeting the product and cost requirements, the lower the swelling rate of silicone grease absorption, the better. At present, there are many kinds of silicone grease on the market, which makes the selection o...
Claims
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Login to view more IPC IPC(8): G01N21/3563G01N21/01
CPCG01N21/35G01N21/01G01N2021/0112
Inventor 孙晓维葛旺泉
Owner 山东七星电气科技发展有限公司
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