Definition of ignition temperature and complete conversion temperature

2021-11-10   Pageview:141

Ignition temperature: the temperature required to reach 10% purification rate

Complete conversion temperature: the temperature required to achieve >98% purification rate

Once ignited, catalytic combustion will reach high temperature in a short time, and the concentration of exhaust gas reaches a certain level, the reaction exotherm can realize self-heating catalytic reaction.

 

 

 

 

 

 

 

 

 

 

The thin layer of paint can also cover some non-smooth particles, but it cannot cover to the extent that there is a closed coating film, because it is impossible to have an excess of paint to fill the surface. At the same time, the coating film can prevent part of the surface from losing the anti-slip property, and also prevent the fragmentation and dullness of the anti-slip agent particles, so that the surface of the coating film is not prone to cracks or cavities.
Hollow particle crushing method This method uses hollow microspherical anti-skid agent particles.

When the paint is applied to the last topcoat and the topcoat has not been cured to a internal lubricant addition flowing state, the hollow anti-slip agent particles are freely spread or the spray gun is used to mechanically squeeze the surface of the paint film. As the paint film dries and solidifies, the hollow particles It is embedded in the surface of the paint film, and then the surface is subjected to mechanical action (such as violent friction with rough emery paper) or chemical erosion or thermal shock to break and/or partially remove the embedded hollow microbead particles, so that the surface is micro-relief Type, impart anti-slip properties to the coating film.

The reason why the hollow particle crushing method can make the coating film have anti-slip properties is because the following two aspects are caused by surface friction or other effects.

① The hollow particles are broken, leaving a jagged edge on the surface of the coating film that can only be observed with a microscope, hindering the movement of the second surface on the surface of the coating film.
② Part of the hollow particles are completely separated from the coating film, leaving caves and pits on the surface of the coating film that can only be observed with a microscope. These caves and pits are equivalent to increasing the surface roughness of the coating film, so that the coating film has anti-slip properties. Moreover, these holes and pits are like tiny “empty suction cups”. When the surface of the coating film is wet, the inside is filled with water or oil, so that the coating film still has anti-slip properties.

The anti-skid surface obtained by the hollow particle crushing method can continuously cause the crushing and removal of new hollow particles through abrasion and friction during use, exposing a new surface similar to the initial coating film. Therefore, the anti-slip properties of the coating film obtained by this method can basically be maintained for the entire service life of the coating film.

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