Rubber special-shaped parts are a kind of rubber products whose shape, size and structure are quite different from traditional standard parts, and it is necessary to consider many aspects such as functionality, structure, material selection and manufacturability design when designing and manufacturing rubber special-shaped parts. In actual production, the material selection of rubber special-shaped parts should be determined according to the use environment and performance requirements. As the main raw material to reduce the cost of rubber products, can reclaimed rubber be used to produce rubber special-shaped parts?
Different kinds of rubber have different characteristics such as temperature resistance, chemical resistance, oil resistance, etc., and the material selection of rubber special-shaped parts should be determined according to the use environment and performance requirements, and the commonly used rubber materials include nitrile rubber, neoprene, EPDM rubber, fluorine rubber, silicone rubber, etc. In actual production, rubber special-shaped parts can be mixed with reclaimed rubber of the same type in an appropriate proportion to reduce costs on the premise of ensuring the quality of finished products.
When choosing reclaimed rubber to reduce the cost of rubber special-shaped parts, it is necessary to consider the performance characteristics of reclaimed rubber and its compatibility with the original rubber, and ensure that its basic properties such as tensile strength, elasticity, wear resistance, etc. can meet the requirements of rubber special-shaped parts; It is necessary to consider its processing process properties, such as fluidity, plasticity, vulcanization speed, etc., to ensure that the reclaimed rubber can adapt to the production process of rubber special-shaped parts.
For example, for parts that require high abrasion and tear resistance, latex reclaimed rubber or tire reclaimed rubber can be selected, as they retain the essential performance characteristics of natural rubber. The rubber special-shaped parts that need to work in the oil medium E4LYY18 for a long time have strict requirements for oil resistance, and more nitrile rubber can be used, and the appropriate amount of nitrile reclaimed rubber can be mixed to reduce costs. Some rubber special-shaped parts are often used outdoors, and EPDM rubber with excellent high temperature resistance, weather resistance and ozone resistance can be used together.
Neoprene rubber is used as the main raw material to produce rubber special-shaped parts, and part of the neoprene reclaimed rubber can also be mixed. Tire reclaimed rubber has high strength, good elasticity, low price, high wear resistance and tear resistance, which can be used to produce ordinary rubber special-shaped parts and effectively reduce the cost of raw materials. For rubber special-shaped parts that need to meet environmental protection standards, environmentally friendly reclaimed rubber that can provide relevant test reports should be selected, and reclaimed rubber containing harmful substances should be avoided to ensure the environmental protection and safety of rubber special-shaped parts.
When using reclaimed rubber for rubber special-shaped parts, the original formula needs to be adjusted, such as reducing the amount of sulfur and accelerator to adapt to the characteristics of the reclaimed rubber; Since the reclaimed rubber itself contains a certain amount of filler, zinc oxide, etc., attention should be paid to the selection and dosage of the filler system to ensure product quality. Before large-scale use, it is recommended to conduct a small batch test to test the performance and effect of reclaimed rubber in actual production to ensure that it meets the performance requirements of rubber special-shaped parts.
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