Natural latex recycled rubber has the characteristics of natural rubber performance, high strength, good elasticity, small specific gravity, can replace natural rubber in whole or part or be used with styrene-butadiene rubber and butadiene rubber to produce rubber products, effectively reduce the cost of raw materials and improve the performance of rubber processing technology; The rational use of latex recycled rubber can further improve the comprehensive indicators of rubber products, so what issues should be paid attention to when producing rubber products with natural latex recycled rubber?
1. Pay attention to the indicators of latex recycled rubber
When using latex recycled rubber to produce rubber products, it is necessary to select the appropriate latex recycled rubber according to the specific performance requirements of the product. Under the premise of cost allowability, natural recycled rubber with high glue content is preferred, and the elasticity, tensile strength and other indicators are closer to natural rubber, which can reduce the replacement ratio of natural rubber. Check the volatile content, ash content, mechanical impurities ( and other indicators of recycled rubber to avoid affecting the appearance or performance of the product due to too many impurities.
For example, extruded rubber products, especially those with smooth appearance, are recommended to choose 60-80 mesh filter latex recycled rubber, and rubber products that require high mechanical strength can use high-strength latex recycled rubber.
2. Pay attention to the formula design of latex recycled rubber products
When using latex recycled rubber as the main raw material to produce rubber products, it is necessary to reasonably design the rubber product formula, especially pay attention to the amount of vulcanizing agents and accelerators. Latex recycled rubber contains rubber hydrocarbons that can be vulcanized, and it needs to be combined with sulfur and accelerators necessary for rubber hydrocarbons in vulcanized recycled rubber. Compared with natural rubber, the sulfur and accelerators used in latex recycled rubber can be increased by about 20%, and there is no "frosting" like natural rubber.
3. Pay attention to the processing technology of latex recycled rubber
When mixing latex recycled rubber, it is necessary to operate in strict accordance with the mixing process and feeding sequence, control the mixing time, ensure that the rubber material is evenly dispersed, avoid scorching or insufficient vulcanization of the rubber material, and avoid local E5LYY715 overheating affecting the color and performance. When producing extruded rubber products, the plasticity of natural recycled rubber materials should be appropriately improved before extrusion to ensure uniform hot smelting, reduce deformation and improve surface finish. Strictly control the vulcanization temperature, vulcanization time and vulcanization pressure to avoid unstable performance of recycled rubber products caused by sulfur deficiency or persulfurization.
4. Pay attention to the storage environment of latex recycled glue
Latex recycled rubber needs to be stored in a dry, ventilated, and direct sunlight environment, stored off the ground, and it is recommended to use moisture-proof materials such as waterproof cloth or plastic sheeting to cover it if necessary; Regularly check the rain leakage situation in the warehouse and the storage status of recycled glue, and find and deal with problems in a timely manner.
5. Pay attention to the inventory of latex recycled rubber factory
When rubber product manufacturers use latex recycled rubber, it is recommended to choose to cooperate with a recycled rubber factory with a certain scale, with sufficient inventory and stable quality, so as to avoid sudden problems such as shortages, out-of-stock or quality fluctuations affecting the normal production of rubber products.
There are still many issues that need to be paid attention to when using latex recycled rubber to replace natural rubber to reduce the production cost of rubber products, and the reasonable design of rubber product formulas is the top priority.
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