The amount of carbon black added to the resin is almost non fluid

If it is not used with a dispersant, the carbon black resin will clump with an added amount of 5-10%.

If used with a suitable dispersant, the addition amount can be about 15%.

Carbon black, also known as carbon black, is an amorphous type of carbon. Light, loose and very fine black powder, with a very large surface area ranging from 10 3000 m2 g, is the product of incomplete combustion or thermal decomposition of carbon-containing substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air. Specific gravity.

Scales made from natural gas"Breath black", which is made of oil"The lights are black", which is made of acetylene"Acetylene black"。In addition, there are:"Groove black"、"Furnace black"。According to the performance of carbon black, there is a distinction"Reinforcing carbon black"、"Conductive carbon black"、"Wear-resistant carbon black"Wait.

It can be used as a black dye for the manufacture of Chinese ink, ink, paint, etc., and is also used as a reinforcing agent for rubber.

Usually made of conductive resin, to add conductive carbon black in the liquid state, fully stir to make the carbon black completely dispersed, if the dispersion effect is not ideal, you can appropriately use some dispersants to help disperse.

If carbon black is added during the curing process of epoxy resin, first, the conductive carbon black does not form a carrier, but only a layer is attached to the surface, and even if the conductivity is not too uniform; Second, the conductive carbon black is not dispersed and cannot be cured after being missolved with resin, so it does not form a good conductive path, so it is difficult to achieve the conductive effect.

Hope it helps, thank you.

It's hard to say. Why do you add carbon black to the curing process? I recommend that you add it in advance, before curing, and stir well to disperse. Otherwise, the conductive carbon black will be unevenly dispersed, and the conductivity will decrease, or even not conductive.

If you add conductive carbon black to the curing process, it will definitely be unevenly dispersed, and there will be no breakpoints in some places. That won't conduct electricity. If it is relatively uniform and the amount added is large, it will conduct electricity more or less.

FW200 carbon black with XYS-5800 hyperdispersant has a blue phase.

If the epoxy resin does not change color, either do not modify the epoxy resin (that is, add h to the unsaturated bond of the epoxy resin) or add the time to prevent yellowing, our company has this reagent. How much silica is added depends on the requirements of the product, and the thixotropy will increase if you add more!

There is no fixed ratio, and it depends on what you are doing.

Depending on the route of use, there are different dosages.

Silica is a name for silica, and the reason why it is called silica is because its most important reinforcing properties are similar to carbon black, while silica powder is white, so it is called silica.

You said that the situation is probably because you are using hydrophilic silica, and you can try to change it to lipophilic.

There is a problem with the curing agent, if it is a good curing agent, it has a production manual, such as 100g 25 degrees for 15-20 minutes, about 10 minutes after curing the material, its reaction will be very intense, and the heat release will be very large, otherwise, try to improve the formula of the curing agent!

Are there any good samples of this kind of thing you are talking about? If you have a sample, you can accurately locate the proportions of each component through microscopic analysis, which can help you. What a Lian system?

This involves the manufacturer's formula secret, and it is inconvenient to disclose it in detail.