There are many kinds of rubber products, but the production process is basically the same. The basic process of rubber products made of general solid rubber-raw rubber includes six basic processes: mastication, mixing, calendering, extrusion, molding, and vulcanization. The difference in the chemical composition of plastics results in different odor molecules, and the corresponding deodorization mechanism is also different. Some use the chemical ao-cooperation mechanism to study a variety of rubber deodorants, and some have other principles of action.
During the processing, storage and use of rubber and its products, the physical and chemical properties and mechanical properties of rubber are gradually deteriorated due to the comprehensive action of internal and external factors. This change is called rubber aging. The factors that cause rubber aging are: oxygen and oxygen in the rubber have a free radical chain reaction with the rubber molecules, and the molecular chains are broken or excessively cross-linked, causing changes in the properties of the rubber. Oxidation is one of the important reasons for rubber aging. Ozone chemical reactive oxygen species much higher, more destructive, it is to make the same molecular chain break, but the effect of ozone on the rubber is different according to the deformation of rubber or not. When it is used on deformed rubber, cracks appear perpendicular to the direction of stress; when it is used on deformed rubber, only an oxide film is formed on the surface without cracks.
It is the ultraviolet rays with higher energy that destroy the rubber. In addition to directly causing the breakage and crosslinking of rubber molecular chains, ultraviolet rays can also generate free radicals due to the absorption of light energy, which initiates and accelerates the oxidation chain reaction process. The UV light acts as a heating agent. Another feature of light action is that it mainly develops on the surface of rubber. Heat: Increased temperature can cause thermal cracking or thermal crosslinking of rubber. But the basic effect of heat is activation. Improve oxygen diffusion rate and activate oxidation reaction, accelerate rubber oxidation reaction rate.
Rubber deodorant refers to products used to remove, degrade or reduce acids, alkoxy compounds, aldehydes, vinyl compounds, ammonia, CO2 and other harmful substances produced during the processing or use of various plastics If people inhale these odors for a long time, they will stimulate the senses, make people feel uncomfortable, and cause secondary pollution to the environment. The processing process of rubber is mainly a process of solving the contradiction between plasticity and elastic properties. Through various technological means, the elastic rubber is turned into a plastic masticated rubber, and various compounding agents are added to make a semi-finished product, and the plastic semi-finished product is turned into a rubber product with high elasticity and good physical and mechanical properties through vulcanization.
