Whether ordinary plastics can conduct heat, please give experimental proof

Yes, there is no substance in the world that cannot conduct heat, it is just a matter of the level of heat conductivity! There are three ways of heat conduction, convection, radiation, and conduction. Convection is where there is the flow of substances, such as fans, condensate.

Radiation is the transfer of infrared energy! For example, why should the inside of the boiling water bottle be made into a mirror, that is, to prevent radiation heat production, and the middle of the inner tank is a vacuum because the vacuum condition basically does not transfer heat. Conduction is contact heat transfer, as said upstairs, when you put boiling water into the cup, you can feel the cup is hot, which is conduction.

Plastics belong to polymers, and their heat conduction mode is phonon heat transfer. Metals are heat transferred by free electrons. Inorganic non-metals rely on the vibration of the lattice to transfer heat! It's not that plastic doesn't transfer heat, it's just that it conducts heat poorly!

If you add thermally conductive fillers to the plastic molding process, then you can improve the thermal conductivity of the plastic!

You can calculate its thermal resistance experimentally! The simple experiment is to use a plastic sheet sandwiched between the upper and lower layers of a heating plate, and after the lower plate is heated for 20 minutes, test the temperature difference between the upper and lower plates! Thermal resistance is the temperature difference divided by the power to generate heat!

Of course, it is best to use metals with good thermal conductivity (such as silver and copper) for the upper and lower plates, and absolutely do not transfer heat, and their thermal resistance is infinity!

Of course. Fill a plastic cup with boiling water and touch it with your hands. Hehe.

Iron is larger than porcelain, wood, plastic.

Boil a cup of hot water, find wood, porcelain, iron, and plastic and put them in the water, wait for 30-60s, and touch them separately.

The basic law of heat transfer: the metal is greater than the non-metal, the solid is greater than the liquid, and the liquid is greater than the gas.

For the same or similar substances, the denser the conduction, the better.

Iron, porcelain, wood, plastic Among them, there are too many types of plastic, and there are many special types, so it is not easy to say, but most of them are smaller than wood.

He couldn't hear him when he talked to him.

If he can hear, non-nerve-borne deafness can hear through bone conduction.

Not the other way around.

Let's do our own thing.

Beethoven's story of persistence in his later years.

CoolPoly thermally conductive plastics are based on engineering plastics and general plastics, such as PP, ABS, PC, PA, LCP, PPS, PEEK, etc.

Typical thermal conductivity ranges from 1-20 W m-k, with some grades up to 100 W m-k. This value is about 5-100 times higher than that of conventional plastics, and the general thermal conductivity is only w m-k. This conductivity is also comparable to that of some metals, such as stainless steel with a thermal conductivity of 15 W m-k and some cast aluminum alloys with a thermal conductivity of 50-100 W m-k.

Compared to conventional materials, thermally conductive polymers have higher flexural and tensile stiffness, but poor impact strength. It is mainly used to replace some metal or ceramic parts that have strict requirements for the size of the parts, such as micro electronic components, optical components, mechanical components and medical components. When elastomers are used as substrates, they can be used as gaskets, shock absorbers, or contact materials.

Combining the simplicity of plastic molding with excellent thermal conductivity, it is possible to achieve heat transfer capabilities similar to those of certain metals or ceramics through injection molding. At the same time, the new material offers designers more design freedom and is half the weight of aluminum. Machining with thermally conductive plastics can reduce the molding cycle time by 20% to 50%, and its inherently low coefficient of thermal expansion effectively reduces part shrinkage.

Prove that there is conductivity, that is, the metal is connected to the circuit, if the bulb can be lit, it is conductive, cut a piece of metal, heat one end, if the other end can also feel the heat, then the metal has heat transfer.

Assemble a series circuit, connect with metal wires, and if the bulbs in series light up prove that the metal is conductive. Put an iron spoon, copper spoon, etc. on top of a cup of boiling water, if the spoon is hot, it proves that the metal has heat transfer.