Rubber Chem Encyclopedia

The three major functions of rubber processing oil in the processing of reclaimed rubber

Create Date:2018-12-28 08:39:04Click volume:303
The three major functions of rubber processing oil in the processing of reclaimed rubber

Simply put, the role of rubber processing oil in reclaimed rubber products is improved by improving the processing technology of reclaimed rubber products, improving the quality and production efficiency of reclaimed rubber products. The types and amounts of rubber processing oils required in different types of reclaimed rubber are different; In actual production, the role of rubber operating oil in the processing of recycled rubber products is mainly reflected in the following three places:

1. The role of rubber processing oil in the reclaimed rubber mixing process

Mixing is the first important process in the production process of recycled rubber products. The mixed rubber is used as a semi-finished product of recycled rubber products. The quality directly affects the quality of recycled rubber products. Adding appropriate rubber oil when reclaiming rubber is mixed. It can reduce heat generation, reduce energy consumption, promote the dispersion effect of compounding agent in reclaimed rubber, and improve the performance of reclaimed rubber mixing process; when reclaimed rubber is mixed, the composition and viscosity of rubber processing oil affect the absorption speed of reclaimed rubber Therefore, the effect of the rubber processing oil on the reclaimed rubber mixing is affected: usually, the reclaimed rubber has a high viscosity of the rubber operating oil with a low viscosity and a high aromatic hydrocarbon content, and the mixing speed can also increase the absorption speed.

It should be noted that although the rubber operating oil can improve the mixing process and the quality of the rubber compound during the mixing of the reclaimed rubber, the excessive amount of the rubber can affect the dispersibility of the powdery compounding agent mainly composed of carbon black in the rubber compound. Therefore, the rubber operating oil is preferably added in multiple portions.

2. The role of rubber operating oil in the process of reclaiming rubber extrusion

Extrusion molding is a common molding process for reclaimed rubber products. It is used to heat and plasticize reclaimed rubber compound in the extruder. Tire tread, hose, tape, wire and cable sheath and various complicated sections can be used. Extrusion molding; the proper amount of rubber processing oil in the production process of reclaimed rubber products can soften the rubber compound, improve the extrusion process of the reclaimed rubber, improve the surface smoothness of the semi-finished products of the reclaimed rubber products, reduce the extrusion expansion, and increase the extrusion speed of the reclaimed rubber products; The rubber operating oil can play a triple role in improving product quality, processing technology and improving production efficiency when the reclaimed rubber is extruded.

3. The role of rubber operating oil in the vulcanization process of reclaimed rubber

Vulcanization is the last major process in the production of reclaimed rubber products. Different types of rubber oil have different effects on the vulcanization process of reclaimed rubber products. Under normal circumstances, the addition of rubber processing oil will reduce the concentration of vulcanizing agent and accelerator in reclaimed rubber. The vulcanization rate will slow down with the increase of the amount of rubber oil; on the other hand, the rubber operating oil with high aromatic content can promote the coke burning and speed up when the reclaimed rubber is vulcanized; therefore, the reclaimed rubber products manufacturing enterprises need to be based on actual conditions. Need to choose the right kind of rubber operating oil.

At present, the reclaimed rubber products on the market mainly include latex reclaimed rubber, tire reclaimed rubber, butyl reclaimed rubber, nitrile reclaimed rubber and EPDM reclaimed rubber. Among them, latex reclaimed rubber and tire reclaimed rubber can use aromatic oil to improve reclaimed rubber. Tensile strength, elongation at break and flexural resistance of the product. The nitrile reclaimed rubber generally replaces the rubber processing oil with a synthetic plasticizer, and the low viscosity naphthenic acid is used for the butyl reclaimed rubber and the EPDM reclaimed rubber. Oil or paraffin oil.