A kind of conductive primer for polypropylene and preparation method thereof
A polypropylene and primer technology, applied in primers, conductive coatings, coatings, etc., can solve the problems of affecting the spray color effect of the topcoat, poor conductivity of conductive carbon black, affecting the mechanical properties of conductive primers, etc. Low, good electrical conductivity, the effect of enhancing the bonding force
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Embodiment 1
[0024] 1. Take a certain amount of conductive spherical titanium oxide composite powder and add it to the high-speed mixer to mix, and at the same time, the temperature is raised to 80 °C, and the mixed solution of KH-570 and petroleum ether is added to the high-speed mixer through the feeding pump, and the mixing time is 20min . After the powder is cooled to room temperature, it is taken out, and after drying, the modified conductive spherical titanium oxide is obtained. The mass ratio of powder to KH-570 is 1:0.125, and the mass ratio of KH-570 modifier to petroleum ether solvent is 1:4.
[0025] 2. Add a certain amount of carbon nanotubes to the nitric acid solution, the concentration of nitric acid is 3.5mol / L, the reaction temperature is 60°C, and the reaction time is 4.5h to obtain purified carbon nanotubes with hydroxyl groups on the surface, followed by deionized water. Washed to neutrality, and dried at 80°C for 17.5 hours to obtain a carbon nanotube pretreated produ...
Embodiment 2
[0028] 1. Take a certain amount of conductive spherical titanium oxide composite powder and add it to the high-speed mixer to mix, and at the same time, the temperature is raised to 70 ℃, and the mixed solution of KH-550 and ethanol is added to the high-speed mixer through the feeding pump, and the mixing time is 10min. After the powder is cooled to room temperature, it is taken out, and after drying, the modified conductive spherical titanium oxide is obtained. The mass ratio of powder to KH-550 is 1:0.05, and the mass ratio of modifier to ethanol is 1:2.
[0029] 2. Add a certain amount of carbon nanotubes to the nitric acid solution, the concentration of nitric acid is 1mol / L, the reaction temperature is 30°C, and the reaction time is 3h to obtain purified carbon nanotubes containing hydroxyl groups on the surface, and then washed with deionized water to Neutral, dried at 60°C for 15h to obtain carbon nanotube pretreated products; the pretreated carbon nanotubes were placed...
Embodiment 3
[0032]1. Take a certain amount of conductive spherical titanium oxide composite powder and add it to the high-speed mixer to mix, and at the same time, the temperature is raised to 90 ° C, and the mixed solution of phenyltriethoxysilane modifier and cyclohexane solvent is added to the mixture through the feeding pump. In a high-speed mixer, the mixing time was 30 min. After the powder is cooled to room temperature, it is taken out, and after drying, the modified conductive spherical titanium oxide is obtained. The mass ratio of the powder to the modifier is 1:0.2, and the mass ratio of the modifier to the solvent is 1:6.
[0033] 2. Add a certain amount of carbon nanotubes to a nitric acid solution, the concentration of nitric acid is 6 mol / L, the reaction temperature is 90 °C, and the reaction time is 6 h to obtain purified carbon nanotubes containing hydroxyl groups on the surface, and then washed with deionized water to Neutral, dried at 100 °C for 20 h to obtain carbon na...
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