As an important part of connecting pipelines, pipe joints directly affect the safety and reliability of the pipeline system. The pipe joints produced with rubber as the main raw material have excellent resilience, tightness and adaptability, and are widely used in various fields. In actual production, the pipe joints suitable for water pipes and air transportation at room temperature are generally processed with natural rubber as the main raw material, and the appropriate use of latex reclaimed rubber can effectively reduce the cost of raw materials.
1. Performance characteristics of natural rubber/latex reclaimed rubber combined with the production of pipe joints
Latex reclaimed rubber is processed from waste natural rubber, waste latex and its products as raw materials, which retains the basic performance characteristics of natural rubber, good elasticity, high tensile strength, lower price than natural rubber, and better aging resistance than natural rubber E4LYY72. The pipe joints produced by the combination of natural rubber/latex and reclaimed rubber have the following performance characteristics.
(1) Natural rubber/latex reclaimed rubber has good elasticity and resilience, and quickly recovers its original shape after being subjected to external force, and the pipe joint can maintain good sealing when it is subject to pressure fluctuations, effectively close the pipe joint, prevent water leakage or air leakage, and ensure the safe operation of the system.
(2) The pipe joints produced by natural rubber/latex reclaimed rubber have good flexibility, and the surface of the joints is soft, which can effectively absorb pipeline vibration, effectively reduce friction and noise, and improve the use efficiency and life of the connectors.
(3) The rubber material is easy to form and process, and can be customized according to different joint designs to meet the needs of various sizes and shapes. Latex reclaimed rubber has the characteristics of good fluidity, high plasticity, low mixing power consumption, less processing heat, small expansion and contraction of unvulcanized rubber, good vulcanization flatness, and small vulcanization return.
(4) Latex reclaimed rubber has undergone intense treatment such as vulcanization and mixing in the production process, and the rubber hydrocarbons have been in a stable state; The combination of natural rubber to produce rubber for rubber shoes can further improve the aging resistance of the finished product.
2. Natural rubber/latex reclaimed rubber combined with the production of pipe joint formula design points
When using natural rubber/latex reclaimed rubber combined with rubber as the main raw material to produce pipeline joints, it is necessary to reasonably control the proportion of latex reclaimed rubber, which is generally about 30%, and the mechanical strength, elasticity and wear resistance of the finished product are better. In the production of rubber joints, sulfur vulcanization is generally used, with accelerator DM/NOBS and active agents zinc oxide, stearic acid, etc. The use of carbon black such as N330 reinforcement can improve the wear resistance and mechanical strength of natural rubber/latex reclaimed rubber pipe joints.
Latex reclaimed rubber has the basic performance characteristics of natural rubber, with high plasticity, low mixing energy consumption and good vulcanization performance, the price is lower than that of natural rubber, and the production of pipe joints with natural rubber can effectively balance the cost and performance, appropriately adjust the formula, and further improve the wear resistance, mechanical strength and aging resistance of pipe joints, so as to enhance the market competitiveness of products and the economic benefits of manufacturers.
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