Q:Synthesis techniques of carbon nanotubes

Catalytic pyrolysis is one of the widely used methods for preparing carbon nanotubes. The method mainly uses transition metal as catalyst, and is suitable for large-scale preparation of carbon nanotubes. The content of carbon nanotubes in the products is higher, but the defects of carbon nanotubes are more.

Q:How should carbon deposits be treated?

In this way, can keep the engine seal, to prevent oil because the gap is too large and rampant, buried carbon curse generation "".

Q:Graphite powder produced by graphite electrode and what we usually call graphite is a kind of thing?

Coal tar pitch as binder is made by calcination, batching, kneading, pressing, roasting, graphitization and machining

Q:How to solve the problem of graphite electrode being crushed during electrolysis

This graphite electrode is so true because it causes gas to expand and disintegrateTantalum electrodes can be solved and not expensive

Q:How can hydrogen be produced by electrolysis of sodium hydroxide with graphite as an electrode?

Because there is no hydrogen ions in the molten state of sodium hydroxide, sodium hydroxide and the onlyThis reaction should have occurred,Na+ + e=Na4OH-- 4e=O2+H2O

Q:The original battery is not necessary to form the electrode potential? Why can we use graphite as electrode only? No potential difference.

External electronic wire and the directional movement of ions in the solution of the directional movement between the poles of a closed loop, so that the two electrode reaction, electron transfer process, ordered a current converting chemical energy to electrical energy.Attention, here, "the ion does not go ashore, the electron does not enter the water"." That is the external circuit of graphite electrode is composed of electron flow and electrolyte ion flow; graphite electrode is to produce voltage and electrolyte, and to provide or absorb electrons

Q:Graphite electrode in milling machine processing, dust is especially big, boot 5 minutes, workshop can not open the figure, what is the solution?

Because will cause a short circuit, the best selection of bag type dust collector, our company is graphite in Linzhou, and before you like, then Xinxiang Keli machinery to help us to design a set of dust removal equipment, and then the operation almost no dust, you can consult the specific

Q:Classification, uses and manufacturers of graphite electrodes

The difference between graphite electrodesMainly from the current, density, resistance, bending strength, ash parameters are measured

Q:What are the losses in graphite electrode?

In EDM, discharge principle is to remove the workpiece material by using the tool and the workpiece anode spark discharge explosion, spark discharge is bidirectional, not only will the workpiece removal part, forming processing, will cause some loss of electrode. Electrode loss is one of the main causes of machining errors in machining, and is an important technical parameter affecting the accuracy and quality of EDM

Q:What is the reason that the current cannot be increased when the graphite electrode is used for anode electrolysis?Add calcium chloride and sodium bicarbonate into electrolytic water

The reason is that the resistance increases continuously, the number of ions is limited, and the conductivity is limited