What types of lubricating oil additives are included

Depoint depressant is a chemical synthesis of polymer or condensation, in its molecules generally contain polar groups and alkyl chains similar to paraffin hydrocarbon structure. The point reducing agent can not prevent the paraffin from crystallizing out at low temperature, that is, the turbidity point of the oil is unchanged. It changes the shape and size of the wax crystal by adsorption on the surface of the wax crystal or by eutectic wax to prevent the wax from forming a three-dimensional network structure, so that it still maintains the flow ability of the oil at low temperature. It should be emphasized that the point reducing agent can only take off and drop the point in the oil containing a small amount of wax, and there is no point reducing effect in the oil without wax or containing too much wax.
Rust inhibitor is a very polar compound, its polar groups have a strong adsorption force on the metal surface, the formation of a close single molecule or multi-molecule protective layer on the metal surface, prevent the corrosion medium and metal contact, play the role of rust prevention. In addition, the base oil of dissolving rust inhibitor can be adsorbed in the place of less rust inhibitor adsorption, deep into the rust additive molecules between the group van der Waals force and additive molecules, so that the adsorption film is more firm; In addition, due to the role of the base oil, the adsorption of the additive on the metal surface is more firm and not easy to break away, the oil can also form a concentrate with the additive, so that the adsorption film is closer. In short, these functions of base oil are conducive to protecting adsorbed molecules, maintaining the thickness of oil film and playing a certain role in rust prevention.

Oiliness agent mainly refers to the properties of lubricants to reduce friction. Additives used for the purpose of improving this property are called oiliness agents, sometimes called antifriction agents or friction improvers, and certain surface-active substances are used as oiliness agents.

Antiwear agent refers to the lubricant under light and medium load conditions can form a film on the friction surface, prevent wear ability.

Extreme pressure agent refers to the lubricant in low speed high load or high speed impact load friction conditions, that is, in the so-called extreme pressure conditions to prevent the friction surface sintering, abrasion ability. Extreme pressure agent contains active substances such as sulfur phosphorus chlorine, extreme pressure agent on the friction surface and metal chemical reaction, generating shear force and melting point are lower than the original metal compound, form extreme pressure solid lubrication film, prevent sintering. The most commonly used extreme pressure agents such as: sulfide olefin, phosphate ester, nitride.

Antifoaming agent in the use of lubricating oil, often affected by shock, agitation, so that the air into the lubricating oil, so that the formation of bubbles, will affect the lubrication performance of lubricating oil, accelerate the oxidation rate, resulting in the loss of oil, and will hinder the transmission of oil, oil supply interruption, impede lubrication, affect the transmission of hydraulic oil pressure. The function of antifoaming agent is mainly to inhibit the generation of foam, improve the speed of eliminating foam, so as to avoid the formation of stable foam. It can be adsorbed on the foam, forming an unstable film, thus achieving the purpose of destroying the foam.

Antioxidant is an important additive to prevent the aging of oil products, which can effectively improve the service life of oil products.