Agricultural tires are tires used in agricultural machinery, such as tractor tires, planter tires, pesticide sprayer tires, etc. At present, the demand for agricultural tires at home and abroad is increasing. In actual production, traditional agricultural tires are mostly processed from natural rubber and styrene-butadiene rubber as the main raw materials; the main components of tire reclaimed rubber are natural rubber, styrene-butadiene rubber and carbon black, etc. The styrene-butadiene rubber is mixed with tires in an appropriate amount Reclaimed rubber can effectively reduce the raw material cost of agricultural tires; then how to choose the appropriate reclaimed tire rubber?
1. Basic performance requirements of agricultural tires
Compared with heavy-duty tires, agricultural tires run slowly and have lower requirements on the mechanical strength and wear resistance of the rubber; but agricultural tires need to adapt to different road conditions, so the puncture resistance and tear resistance of the rubber used , Anti-aging performance and other requirements are high. In actual production, improper selection of raw materials for agricultural tires can easily lead to problems such as pattern loss, tread cracks, and side cracks during use of the tire.
When choosing reclaimed rubber for agricultural tires, the tensile strength, elongation at break, tensile stress, tear strength, fatigue performance, heat and oxygen aging resistance, abrasion resistance and other indicators of agricultural tires should be considered comprehensively. For similar tire reclaimed rubber products, appropriately increase the amount of reclaimed rubber and reduce more raw material costs.
2. Basic testing items for tire reclaimed rubber
To judge the quality of reclaimed tire rubber, rubber product manufacturers can start from the following four aspects: appearance inspection, mechanical properties, chemical properties and environmental performance. Under normal circumstances, it is first necessary to use visual inspection to determine whether the tire reclaimed rubber 2YLYY423 has a uniform texture and whether it contains metal chips, wood chips, sand and other impurities. Then, the tensile strength, elongation at break, hardness, density, Mooney viscosity and other indicators of the tire reclaimed rubber can be tested.
In actual production, to choose a suitable reclaimed rubber for agricultural tires, it is also necessary to test the chemical properties of the tire reclaimed rubber such as heating loss, ash content, acetone extract, and moisture.
When using styrene butadiene rubber and tire reclaimed rubber to prepare agricultural tires, manufacturers need to focus on the tensile strength, elongation at break, Mooney viscosity, density, heating loss, ash content, and acetone extract of the reclaimed rubber. Carry out testing, detect hazardous substances, heavy metals, etc. according to the REACH and RoHS testing instructions, and select tire reclaimed rubber that meets performance requirements and environmental protection requirements. Later, the editor will continue to share with you the specific application of tire reclaimed rubber in agricultural tires.
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