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A kind of curing agent and its preparation method and application
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A curing agent and nano-alumina technology, applied in the field of materials, can solve problems such as low insulation resistance, corrosion of quartz sand particles, potential safety hazards in circuit protection, etc., achieve high insulation resistance, and improve the effect of filling density
Active Publication Date: 2022-07-15
WUHAN BIAODI ELECTRONICS TECH
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Problems solved by technology
However, the fuses prepared with these curing agents generally have the problem of low insulation resistance (less than 1MΩ) after breaking, and the alkaline curing agent also has a corrosive effect on quartz sand particles, which will bring safety hazards to circuit protection.
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preparation example Construction
[0019] This specific embodiment also includes the preparation method of the curing agent, according to the proportion of each component, dispersing nano-alumina hydrate, nano-titanium oxide hydrate, nano-tin oxide hydrate, nano-tin oxide and nano-silicon oxide hydrate in water be made of.
[0020] In addition, this specific embodiment also includes the application of the above-mentioned curing agent or the curing agent prepared by the preparation method in the quartz sand for curing the fuse, including: according to the volume dosage ratio of the curing agent and the quartz sand of 3-4:10. The curing agent is injected into the fuse cavity containing the quartz sand, and cured at 80-170° C., further, cured at 80-160° C. for 3-6 hours, and then cured at 160-170° C. for more than 42 hours.
Embodiment 1
[0023] This embodiment proposes a curing agent, which, calculated in weight fraction, includes 70 parts of nano-alumina hydrate, 5 parts of nano-titanium oxide hydrate, 2 parts of nano-tin oxide hydrate, 15 parts of nano-silica hydrate and 300 parts of water .
[0024] This embodiment also includes curing the product fuse JDA07-200A with quartz sand with the curing agent, the dosage of the quartz sand is 50ml, and the dosage of the curing agent is 20ml;
[0025] Further, the curing agent was injected into the fuse cavity containing the quartz sand, cured at 90° C. for 5 hours, and then cured at 160° C. for 45 hours.
Embodiment 2
[0027] The present embodiment proposes a curing agent, which, calculated by weight fraction, includes 80 parts of nano-alumina hydrate, 2 parts of nano-titanium oxide hydrate, 2 parts of nano-tin oxide hydrate, 20 parts of nano-silica hydrate and 300 parts of water .
[0028] This embodiment also includes curing the product fuse JDA07-200A with quartz sand with the curing agent, the dosage of the quartz sand is 50ml, and the dosage of the curing agent is 15ml;
[0029] Further, the curing agent was injected into the fuse cavity containing the quartz sand, cured at 80° C. for 6 hours, and then cured at 160° C. for 42 hours.
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Abstract
The present invention relates to a curing agent and its preparation method and application. The curing agent, calculated in parts by weight, includes the following components: 20-80 parts of nano-aluminahydrate, 2-15 parts of nano-titaniumoxidehydrate, 2-10 parts of nano-tinoxidehydrate, and nano-silica hydrate 10‑30 parts and 280‑300 parts water. The preparation method includes: dispersing nano-alumina hydrate, nano-titaniumoxide hydrate, nano-tin oxide hydrate, nano-tin oxide and nano-silicon oxide hydrate in water according to the proportion of each component. In addition, the present invention also includes the application of the above-mentioned curing agent or the curing agent prepared by the above-mentioned preparation method in curing the quartz sand of the fuse. The fuse cured by using the curing agent proposed by the present invention has higher insulation resistance after breaking, and the insulation resistance is greater than 5MΩ.
Description
technical field [0001] The invention relates to the technical field of materials, in particular to a curing agent and a preparation method and application thereof. Background technique [0002] With the rapid development of new energy vehicles and rail transit, fuses, as a key device for circuit protection, have also developed rapidly. This type of fuse generally consists of a melt, a filler and a tube body, where the filler is usually quartz sand. These quartz sands surround the melt and have the ability to extinguish the arc, cool the medium and break the melt during overcurrent protection. Because the working environment of the fuse usually has various vibrations, in order to improve the shock resistance of the fuse and improve the stability of its protection circuit, it is necessary to solidify these quartz sands to form a "sand body". At present, the commonly used curing agents are water glass and alkaline silica sol. However, the fuses prepared by using these curing...
Claims
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Application Information
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