Heatproof antifouling superhigh voltage insulation material and preparation method thereof
An insulating material, ultra-high voltage technology, applied in insulators, organic insulators, plastic/resin/wax insulators and other directions, can solve the problem of not being able to improve the anti-pollution flashover performance and heat resistance of insulating materials, and improve thermal decomposition. Temperature and anti-fouling ability, good compatibility, the effect of optimizing electric field distribution
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[0038] The present invention also provides a method for preparing the above heat-resistant and anti-fouling ultra-high voltage insulating material, which includes the following steps:
[0039] 1) Add 0.1~1 parts by weight of sodium lauryl sulfate into 10~30 parts by weight of distilled water, place in a magnetic stirrer, stir at 20~35℃ for 15~40 minutes, and then add 1~5 parts by weight of nano The montmorillonite is stirred in a water bath at 60°C for 3-6 hours, filtered and dried to obtain a surface-modified nano-montmorillonite;
[0040] 2) Add the surface-modified nano-montmorillonite obtained in step 1) and 100 parts by weight of low-density polyethylene in sequence to the torque rheometer, and mix at 140-190°C for 20-25 minutes to obtain low-density polyethylene / Montmorillonite composite;
[0041] 3) Combine the low-density polyethylene / montmorillonite composite material obtained in step 2), 15-20 parts by weight of fluorosilicone resin, 20-30 parts of polytetrafluoroethylene...
Example Embodiment
[0049] Example 1
[0050] A method for preparing heat-resistant and anti-fouling ultra-high voltage insulating material includes the following steps:
[0051] 1) Add 0.1 parts by weight of sodium lauryl sulfate into 10 parts by weight of distilled water, place in a magnetic stirrer, and stir at 20°C for 15 minutes, then add 1 part by weight of nano-montmorillonite, and stir in a 60°C water bath 3h, filter and dry to obtain surface-modified nano-montmorillonite;
[0052] 2) Combine the surface-modified nano-montmorillonite obtained in step 1) with 100 parts by weight with a density of 0.895g / cm 3 , The low density polyethylene with a melt index of 2.3g / 10min (measured at 190℃ / 2.16kg) was added to the torque rheometer in sequence, and mixed at 140℃ for 20min to obtain a low density polyethylene / montmorillonite composite material ;
[0053] 3) Combine the low-density polyethylene / montmorillonite composite material obtained in step 2), 15 parts by weight of fluorosilicone resin, 20 parts...
Example Embodiment
[0056] Example 2
[0057] A method for preparing heat-resistant and anti-fouling ultra-high voltage insulating material includes the following steps:
[0058] 1) Add 0.3 parts by weight of sodium lauryl sulfate into 15 parts by weight of distilled water, place it in a magnetic stirrer, and stir at 25°C for 20 minutes, then add 2 parts by weight of nano-montmorillonite and stir in a 60°C water bath After 3.5h, filter and dry to obtain surface-modified nano-montmorillonite;
[0059] 2) The surface-modified nano-montmorillonite obtained in step 1) and 100 parts by weight have a density of 0.905g / cm 3 , Low density polyethylene with a melt index of 3.5g / 10min (measured at 190℃ / 2.16kg) was added to the torque rheometer in sequence, and mixed at 150℃ for 23min to obtain a low density polyethylene / montmorillonite composite ;
[0060] 3) Combine the low-density polyethylene / montmorillonite composite material obtained in step 2), 17 parts by weight of fluorosilicone resin, 22 parts by weight ...
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