Q:Method for identifying iron powder, aluminium powder and graphite powder

They can be used to determine the reaction with acid: the same quality, the same mass fraction of dilute hydrochloric acid solution, and then the three kinds of powder into three kinds of solution, graphite powder and hydrochloric acid reaction observed, iron and aluminum powder and hydrochloric acid hydrochloric acid reaction is slow, can react violently, prove that the nature of the most active aluminum iron, the main component of carbon graphite is the most stable chemical properties.

Q:Graphene with graphite powder where to do ah, high carbon content of the?.

Graphene to do it, it really had to choose impurities less graphite powder, I used Qingdao Huatai graphite graphene with graphite powder, experimental use, you can see ah, I hope to help you.

Q:How to measure the conductivity of powdered graphite?

Some other factors for measuring the resistivity of conductive graphite powderConductivity varies with external factors and is sensitive. The early microphones were made with graphite powder, because the vibration of the voice changed the electrical conductivity between the graphite powders and changed the current to produce analog signals. One can imagine that you need to test his electrical conductivity for the experimental environment.

Q:Will dust explosion occur in graphite dust? If you have definite or negative judgment, please share it according to data.

Any object that is crushed will have a surface energy (internal energy), but the temperature will not increase, so the specific heat will become largerFuel burns because its energy is already full (reaching a point of fire)When the object reaches the ignition point, internal energy = (ignition +273.15) * specific heat capacity

Q:Can graphite powder be used for concrete?

The graphite powder is soft, black and gray, greasy and polluting paper. Hardness is 1~2, along the vertical direction with the increase of impurities, its hardness can be increased to 3~5. The specific gravity is 1.9~2.3. Under isolated oxygen conditions, the melting point is above 3000 degrees Celsius and is one of the most refractory minerals.

Q:The difference between silicone and silicone?

Characteristics of silica gel:Silica gel is a one component, room temperature vulcanized liquid rubber. Once exposed to air, the silane monomer condensed, forming a network structure, crosslinked, unable to melt and dissolve, elastic, rubbery, and adhesive. The thermal conductivity is slightly higher than the general rubber, but compared with the thermal grease is much lower, and once cured, it is difficult to separate the adhesive objects, generally can only be used in graphics cards, memory radiator. Mainly used in silicone adhesive low-end card heat sink and the main chip, bonding and particles, particles of the memory memory and radiator. The high-end products are generally used to dissipate heat with grease, and then use the clip fins fixed on the substrate, but it will increase the cost of. The radiating fins are fixed in the low-end graphics chip and good memory particles, and the heat sink in the low-end graphics cards generally are relatively small, so the use of silicone adhesive is common; and high-end graphics and the CPU heat is far greater than the general low-end graphics chip and memory particle heat generation, and the head is relatively CPU so, the grease with radiator and clip form. If used on the CPU will cause overheating, and it is difficult to remove the heat sink, pull down, it may directly damage the CPU or CPU socket. And if you pull down the silicone adhesive cards, heat sink, it is possible to display the chip from the PCB pull down. From this point, we can see who has a better heat conduction effect.

Q:What are the specifications of the graphite powder used for conduction?

There are many kinds of specifications. There are 1 grams, 2 grams, 3 grams, which kind do you need?

Q:How many kinds of lubricating graphite powder can be added to the car engine?

Graphite particles, such as sand, will not touch iron, nor oil, the dispersion is very good. Small enough graphite particles, even if the oil back to the oil pan, but also still exist between iron and iron (pressed, want to run, can not run away ah).

Q:Does graphite allow lubrication of rusted doors?

Sure。 When we were young, the teacher reminded us that we could use the pencil core to scrape the end and put it into the keyhole to lubricate it.

Q:What does composite graphite mean?

It is an ideal sealing material and is widely used in sealing field. Composite graphite is a kind of graphite composite made of graphite powder and rubber plastic and resin. It can increase the conductivity and wear resistance of rubber and plastics, and can be applied in the field of electric conduction.