The elongation at break is an important indicator for measuring the quality of butyl reclaimed rubber. It refers to the ratio of the elongation of the butyl reclaimed rubber sample to the original length, expressed as a percentage. When using butyl reclaimed rubber to produce rubber products, it is important to improve the elongation at break of the rubber to improve the comprehensive index of butyl rubber products. In the actual production process, butyl reclaimed rubber products manufacturers generally use the following methods to improve the butyl reclaimed rubber elongation at break 1JLYY92.
1. A vulcanization system that increases the elongation at break of butyl reclaimed rubber
The mechanical strength of butyl reclaimed rubber has a lot to do with the vulcanization system. Generally, the higher the amount of sulfur used, the greater the mechanical strength of the rubber compound. Therefore, when using butyl reclaimed rubber to produce rubber products with high requirements on elongation at break, The high-sulfur vulcanization system can be selected, and the vulcanized rubber after vulcanization has higher elongation at break than the peroxide vulcanizate and the low-sulfur vulcanized rubber.
2. Reinforcement filling system for improving the elongation at break of butyl reclaimed rubber
The amount of the compounding agent in the reinforcing filling system is second only to the rubber, which can significantly improve the mechanical strength of the butyl reclaimed rubber product, but the higher the amount of the high reinforcing carbon black, the lower the elongation of the rubber material, and the lower the ratio. The carbon black with surface area and low structure is more favorable for improving the elongation at break of the rubber. Therefore, the manufacturer of butyl reclaimed rubber products can choose carbon black with low specific surface area and low structure as a reinforcing agent, and appropriately reduce the amount of carbon black. . Butyl reclaimed rubber products manufacturers can also replace the appropriate amount of carbon black with high-fine talcum powder to improve the elongation at break of butyl reclaimed rubber.
3. Enhancing the elongation elongation of butyl reclaimed rubber
Fiber material is a commonly used reinforcing material in the production process of rubber products. Short fiber can significantly increase the modulus, tensile stress and deformation resistance of rubber products in the production of rubber products; therefore, the use of butyl reclaimed rubber to produce high elongation elongation Avoid using short fibers when ordering rubber products.
4. Butyl regenerated rubber Mooney viscosity and mixing process
The molecular weight of the butyl reclaimed rubber itself also affects the elongation at break of the reclaimed rubber product. The lower the molecular weight, the lower the viscosity of the IIR reclaimed rubber, and the elongation at break of the regenerated rubber product is relatively higher; the rubber product manufacturer It is also possible to appropriately extend the mixing cycle during the mixing process, improve the dispersibility of the carbon black in the butyl reclaimed rubber, and further improve the elongation at break of the rubber.
When using butyl reclaimed rubber to produce rubber products with high elongation at break, the above method can be used to improve the elongation at break of the rubber; however, in actual operation, the hardness, tensile stress and tensile strength of the butyl reclaimed rubber Intensity, elongation at break and other indicators are mutually complementary and mutually constrained. Therefore, in order to improve the elongation at break of butyl reclaimed rubber, it is also necessary to pay attention to changes in other indexes of the rubber compound.
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