| abstract |
The invention discloses a kind of preparation methods of electrical equipment polyurethane adhesive, are related to technical field of polyurethane adhesive, include the following steps：Isosorbide-5-Nitrae butanediamine is added in isopropanol, pH is adjusted, cyanamide is added dropwise under ice bath, stir, temperature reaction, triethanolamine is added, stir, concentrate, recrystallization obtains material a；White carbon, carbon nanotube, bentonite, titanium dioxide, fire retardant, plasticizer are mixed, material b is obtained；By end hydroxy butadiene, tetrahydrofuran propylene oxide copolyethers triol, polyethylene glycol adipate diol dehydratase; isophorone diisocyanate, dibutyl tin laurate and N methylmorpholines are added under nitrogen protection; heating, stirring, obtains base polyurethane prepolymer for use as；Diethanol amine, material a and xylylene dichlorides is added, is stirred to react, is added material b, stirring to get.The polyurethane adhesive has excellent antibacterial and mouldproof, electrical insulating property and thermal stability, can keep good electrical insulating property at relatively high temperatures. |