Silicon rubber for encapsulating electronic tube and encapsulating method
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A technology of silicon rubber and electronic tubes, applied in the field of electronic tubes
Inactive Publication Date: 2013-03-13
NANJING SANLE ELECTRONICS INFORMATION IND GRP
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Abstract
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Problems solved by technology
The sealing of the electronic tube has a great influence on the performance of the electronic tube. If the airtightness is not good, the electronic tube cannot work normally.
Due to the unreasonable potting silicone formula and unstable potting process of the electronic tubes in the prior art, after the electronic tubes work for a period of time, the electrical insulation, weather resistance, high and low temperature resistance and sealing performance are reduced, and the performance is reduced
Method used
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Embodiment 1
[0042] The silicone rubber for electronic tube potting described above, wherein the catalyst is dibutyltin dilaurate. The curing agent is ethyl orthosilicate.
[0043] 2. The potting method of electron tube silicone rubber includes the following steps:
[0044] like figure 1 As shown, (1) clean the electronic tube perfusion part with ethanol, coat the silicone coupling agent primer on the surface of the electronic tube perfusion part, then coat the vaseline release agent on the surface of the potting mold, and then fix the electronic tube perfusion part on the potting in the mold;
[0045] (2) prepare silicone rubber with 100 parts by weight of 106 room temperature vulcanized silicone rubber, 1 part of catalyst, and 2 parts by weight of curing agent, then carry out degassing treatment to the prepared silicone rubber, and set aside;
[0046] (3) Slowly pour the silicone rubber degassed in step (2) into the potting mold in one direction, let it stand to solidify, and demould...
Embodiment 2
[0050]The above-mentioned silicone rubber for electronic tube potting, wherein the catalyst is dibutyltin dilaurate. The curing agent is ethyl orthosilicate.
[0051] 2. The potting method of electron tube silicone rubber includes the following steps:
[0052] like figure 1 As shown, (1) clean the electronic tube perfusion part with ethanol, coat the silicone coupling agent R622 primer on the surface of the electronic tube perfusion part, then coat the vaseline release agent on the surface of the potting mold, and then fix the electronic tube perfusion part on the potting In the sealing mold;
[0053] (2) Prepare silicone rubber with 110 parts of 106 room temperature vulcanized silicone rubber, 1.5 parts of catalyst, and 2 parts by weight of curing agent, then carry out degassing treatment to the prepared silicone rubber, and set aside;
[0054] (3) Then slowly potting the silicone rubber degassed in step (2) in the potting mold in one direction, let it stand to solidify, ...
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Abstract
The invention discloses silicon rubber for encapsulating an electronic tube. The silicon rubber is prepared from the following raw materials in parts by weight: 100-110 parts of 106 room temperature vulcanized silicone rubber, 1-1.5 parts of catalyst and 1.5-2 parts of curing agent. Through a large quantity of tests, the silicon rubber specially used for encapsulating the electronic tube is screened out, all components are scientifically proportioned, and the electronic tube obtained through encapsulation is good in electric insulation property, has good arc and corona resistance, water resistance, ozone resistance, weathering aging resistance and high-low temperature resistance, can be used within a temperature range from -60 DEG C to 200 DEG C, and is wide in application range. The method for encapsulating the electronic tube, provided by the invention, has the advantages of strong maneuverability and high process stability and reliability; and the prepared silicon rubber is high in adhesion firmness and good in encapsulation airtightness.
Description
technical field [0001] The invention relates to an electronic tube, in particular to a silicon rubber for electronic tube potting and a method for potting the electronic tube silicon rubber. Background technique [0002] An electron tube is an electronic device that generates current conduction in an airtight closed container and uses the effect of an electric field on the electron flow in a vacuum to obtain signal amplification or oscillation. The sealing of the electronic tube has a great influence on the performance of the electronic tube. If the airtightness is not good, the electronic tube cannot work normally. Due to the unreasonable potting silicone formula and unstable potting process of the electronic tubes in the prior art, after the electronic tubes work for a period of time, the electrical insulation, weather resistance, high and low temperature resistance and sealing performance are reduced, and the performance is reduced. Therefore, it is necessary to research...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K5/5415H01J5/30H01J9/40
Inventor 张慧管玉柱刘洋季大习朱玲邹雯婧
Owner NANJING SANLE ELECTRONICS INFORMATION IND GRP
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