Most rubber grommets are exposed to light (including natural light and artificial light) during storage and use. In the long-term illumination, their aging process will be accelerated (compared to when they are not exposed to light), and the surface will gradually age. This aging is characterized by a progressively brittle Read more…
In the vulcanization process of rubber grommets, the geometry of the finished product will undergo different degrees of shrinkage after demolding. The rubber grommets industry is accustomed to calling this phenomenon “shrinkage.” The ratio of the difference between the size of the mold and the Size of the finished part Read more…
The structural elements of the so-called rubber grommets molds are the various components that make up the rubber mold and the structural forms that perform certain process functions. For the rubber grommets molds that are usually used, the structural elements can be classified into the following eight types. 1 molding Read more…
Rubber grommets vulcanization common quality problems The quality of Rubber grommets is related to the nature of the compound itself, the composition of the formulation, the manufacturing process, the structure and operation of the molding die, and the state of the vulcanization equipment. Product quality problems, causes and countermeasures are Read more…
A variety of rubber blends for the manufacture of rubber grommets Two or more different rubbers or rubbers are blended with a synthetic resin by mechanical force to produce a combination of various rubber grommets called rubber mechanical blends or rubber. The rubber blend combines the properties of a component Read more…
Classification of antistatic agents for rubber grommets Classification of antistatic agents Antistatic agents are actually some surfactants, which are classified into four types according to their chemical structures: cationic, anionic, zwitterionic and nonionic. According to the chemical composition, the amine derivative, the quaternary ammonium salt, the phosphate ester, the sulfate Read more…
Antistatic principle of rubber grommets The antistatic agent is a substance which can reduce the surface resistance and volume resistance of the rubber grommets, moderately increase the conductivity, and prevent static electricity from accumulating on the grommets. Its structural formula is R-Y-X, wherein R is a lipophilic group, X is Read more…
The danger of static electricity to rubber grommets In addition to NBR, natural rubber and other synthetic rubber materials have a volume resistivity of 1010Ω•cm or more and good electrical insulation. Under the action of motion, stress and friction, these rubber grommets are prone to charge accumulation and are charged, Read more…
Graphite powder In the process of processing, storage or use of rubber rubber grommets, the phenomenon that the performance gradually deteriorates due to the influence of external environmental factors, until the loss of use value is called aging. The occurrence and development of rubber grommets aging is a process from Read more…
Conductive agent in rubber grommets Most rubber materials are electrical insulators. If conductive rubber grommets are made of a rubber material, in addition to introducing a conductive functional group into the rubber molecular chain, another convenient method is to add a conductive agent, that is, a conductive filler or a Read more…