Tire reclaimed rubber has good compatibility with natural rubber and styrene-butadiene rubber, and can be blended into ordinary industrial rubber sheet formulations that use natural rubber and styrene-butadiene rubber as the main raw materials to reduce raw material costs. So, what is the difference between the industrial rubber sheet formula mixed with tire reclaimed rubber and the industrial rubber sheet without added reclaimed rubber in actual production? When blending tire reclaimed rubber to reduce the production cost of ordinary industrial rubber sheet, which tire reclaimed rubber is suitable? And how to design natural rubber / styrene butadiene rubber industrial rubber sheet formula containing tire reclaimed rubber?
1. How to adjust the general industrial rubber sheet formula containing tire recycled rubber
When using recycled tire rubber to reduce the production cost of ordinary industrial rubber sheets, rubber product manufacturers need to properly adjust the types and dosages of compounding agents in the formula, mainly including vulcanizing agents, accelerators and rubber fillers, especially non-reinforced rubber fillers. Generally, the amount of non-reinforced rubber filler in industrial rubber sheet formulations containing tire reclaimed rubber should be appropriately reduced; the amount of reinforcing agent such as carbon black 2LLYY421 should be appropriately increased to increase the amount of tire reclaimed rubber while ensuring the physical mechanical strength of the rubber sheet. The type and amount of vulcanizing agent and accelerator in the general rubber sheet formulation containing tire reclaimed rubber should be adjusted appropriately as the amount of reclaimed rubber increases or decreases.
2. Reference formula of common industrial rubber sheet containing tire reclaimed rubber
50 parts of natural rubber, 50 parts of styrene butadiene rubber, 30 parts of tire recycled rubber, 7 parts of zinc oxide, 2.8 parts of stearic acid, 1 part of antioxidant, 5 parts of paraffin, 25 parts of carbon black, 50 parts of barite powder, light calcium 60 parts, 60 parts clay, 5 parts calcium hydroxide, 9 parts rubber oil, 2.5 parts accelerator M, 0.5 parts accelerator D, 0.2 parts accelerator TMTD, 2.5 parts sulfur, total: 360.5 parts
Tests show that the industrial rubber sheet produced by the formula has a tensile strength of about 9.5 MPa, an elongation at break of about 430%, and a hardness of about 70 degrees. Rubber product manufacturers can adjust the formula according to actual needs.
3. How to choose the tire recycled rubber used in the production of ordinary industrial rubber sheet
When using tire recycled rubber to reduce the production cost of ordinary industrial rubber sheets, rubber product manufacturers need to choose recycled rubber products that are closest to the finished product index according to the specific needs of rubber sheets, and increase the amount of tire recycled rubber as much as possible. From the index point of view, there are many tire reclaimed rubber products. In general, tire tread reclaimed rubber has a higher effective rubber hydrocarbon content, greater mechanical strength, and a greater proportion of industrial rubber sheets. From the price point of view, tire tread reclaimed rubber is more expensive than ordinary tire reclaimed rubber; rubber product manufacturers also need to comprehensively consider indicators, costs and the amount of reclaimed rubber blended to choose the appropriate reclaimed rubber variety.
When using recycled rubber to produce industrial rubber sheet production costs, rubber product manufacturers not only need to choose the right tire recycled rubber according to actual needs, reasonably determine the blending ratio of tire recycled rubber, properly adjust the formula, but also need to adjust the production process and various process parameters In the later period, the editor will continue to share with you the problems that you need to pay attention to and the skills you need to use in order to reduce the production cost of ordinary industrial rubber sheets.