White carbon black modified nano barium sulfate as well as preparation method and application thereof
A technology of nano-barium sulfate and white carbon black, which is applied in the field of film fillers, can solve problems such as easy agglomeration, difficulty in uniform dispersion, and high surface energy, and achieve the effects of improving opening performance, enhancing practicability, and improving dispersibility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] Mix 1000g of barium sulfate spherical powder with particle size D50 of 60nm and 10L of water, stir at high speed to make slurry, adjust the pH value of the slurry to about 3.0 with sulfuric acid, measure the dynamic potential to +42mV, and add the modulus to 3.2 The water glass solution, its addition amount is SiO 2 The mass meter is 5% of the nano-barium sulfate quality, and the reaction solution is added in 1 hour; and the acidifying agent H is added in parallel 2 SO 4 , the reaction temperature is controlled at 80°C, the stirring reaction time is controlled for 2h, after the reaction is completed, the pH is 8.0, aged for 1h; Si69 is added, the reaction is continued for 1h, spray-dried at 240°C (inlet temperature is 240°C, outlet temperature is 90°C), and Nano barium sulfate modified by white carbon black, its specific surface is 83m 2 / g, the oil absorption value is 58.
[0042]Get respectively 374.5g of nano barium sulfate modified by white carbon black and unmod...
Embodiment 2
[0045] Mix 1000g of barium sulfate spherical powder with particle size D50 of 60nm and 10L of water, stir at high speed to make slurry, adjust the pH value of the slurry to about 3.0 with sulfuric acid, measure the dynamic potential to +42mV, and add the modulus to 3.2 The water glass solution, its addition amount is SiO 2 The mass meter is 5% of the nano-barium sulfate quality, and the reaction solution is added in 1 hour; and the acidifying agent H is added in parallel 2 SO 4 , the reaction temperature is controlled at 80°C, the stirring reaction time is controlled for 2h, after the reaction is completed, the pH is 4.0, and it is aged for 1h; Si69 is added, the reaction is continued for 1h, and spray-dried at 240°C (the inlet temperature is 240°C, and the outlet temperature is 90°C) to obtain Nano barium sulfate modified by white carbon black, its specific surface is 100m 2 / g, the oil absorption value is 98.
[0046] Get respectively 374.5g of nano barium sulfate modifie...
Embodiment 3
[0049] Mix 1000g of barium sulfate whisker-like powder with a diameter of 1.0μm and 10L of water, stir at a high speed to make a slurry, adjust the pH of the slurry to about 4.0 with sulfuric acid, measure the dynamic potential to +30mV, and flow into the modulus as The water glass solution of 3.2, its adding amount is SiO 2 The mass meter is 12% of the nano-barium sulfate mass, and acidifying agent H is added simultaneously 2 SO 4 , the reaction solution was added in 1 hour, the reaction temperature was controlled at 80°C, the reaction time was controlled for 2h, the pH value at the end of the reaction was 6.5, after the reaction was completed, it was aged for 1h, trimethylchlorosilane was added, and spray-dried at 240°C (inlet temperature was 240°C, Outlet temperature is 90 ℃), obtains the nano barium sulfate modified by white carbon black, and its specific surface area is 106m 2 / g, the oil absorption value is 68, the nano-barium sulfate powder before and after modificati...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Oil absorption value | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More