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The difference between rubber and plastic

2022-06-08
Latest company news about The difference between rubber and plastic

With the progress of science and technology and the development of society, people have been inseparable from plastic products and rubber products in their daily life. Today, I will introduce some simple methods to help you distinguish them.

 

 

 

With the progress of science and technology and the development of society, people have been inseparable from plastic products and rubber products in their daily life. Today, I will introduce some simple methods to help you distinguish them.

 

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First, we start with the difference between plastic and rubber. Simply put, if plastic is deformed under the action of external force, it is difficult to restore to its original state, while rubber is easily restored to its original state. For example, if the rubber O-ring is stretched, it will return to its original shape immediately after loosening it. However, if the plastic product is deformed, it will not return to its original condition. In technical terms, under the action of external force, plastic deformation is plastic deformation, while rubber deformation is elastic deformation. Mainly depends on their molecular structure. The elasticity of plastics is generally less than 100%, while rubber can exceed 1,000% at most.

 

Secondly, the production process is different. Rubber products have an additional vulcanization process. The silica gel sealing ring has an open porous structure and can absorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to the alkali metal silicate (such as sodium silicate) solution to make it acidify, and then add a certain amount of electrolyte to stir to form a silicic acid gel; or add acid or Ammonium salts can also generate silica gel.

 

Finally, plastic products may be repeatedly recycled and reused, while rubber products are not. It can only be processed into reclaimed rubber before being used again. O-rings are usually selected as large cross-section O-rings as possible. In the case of the same gap, the volume of O-rings squeezed into the gap should be less than the maximum allowable value. Silica gel has an open porous structure and can adsorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and used repeatedly. Add acid to the alkali metal silicate (such as sodium silicate) solution to make it acidify, and then add a certain amount of electrolyte to stir to form a silicic acid gel; or add acid or Ammonium salts can also generate silica gel.