Rubber air springs use the volumetric elasticity characteristics of air to play their role, and are mainly composed of outer rubber, ply, inner rubber and wire rings. The air spring mainly bears vertical load during use, and the amount of internal air depends on the amount of load on the spring; the load on the spring is mainly borne by the ply, and the commonly used ply materials are nylon, rayon, polyester, etc., which have good strength and bending resistance. Flexible material; air spring cord rubber is required to have resistance to flexing, low heat generation, and good bonding strength with cord, inner and outer rubber.
In actual production, rubber air spring cord rubber is generally processed with natural rubber as the main raw material. The appropriate amount of mixed tire reclaimed rubber can effectively reduce raw material costs and production energy consumption on the premise of ensuring product quality.
1. Reference formula for rubber air spring cord fabric produced from pure natural rubber
100 parts of natural rubber, 25 parts of zinc oxide, 2 parts of stearic acid, 0.75 parts of antioxidant A, 0.75 parts of antioxidant D, 15 parts of semi-reinforced carbon black, 1.5 parts of pine tar, 1 part of accelerator DM, accelerator TMTD 0.05 parts, 2.5 parts of sulfur; total: 148.55 parts.
2. Natural rubber + tire reclaimed rubber production rubber air spring cord rubber reference formula
100 parts of natural rubber, 40 parts of tire reclaimed rubber, 20 parts of zinc oxide, 2 parts of stearic acid, 0.75 parts of antioxidant A, 0.75 parts of antioxidant D, 20 parts of semi-reinforced carbon black, 20 parts of light calcium carbonate, clay 20 parts, 3 parts of pine tar, 0.3 parts of accelerator DM, 0.6 part of accelerator M, 2.6 parts of sulfur; total: 230 parts.
3. Which tire reclaimed rubber is suitable for producing rubber air spring cord fabric
The rubber air spring needs to be filled with gas when it is used. The preparation and molding have the characteristics of thin-walled tape products, uniform thickness and accurate size. It is recommended to use the ultra-fine tire reclaimed rubber 2ELYY83 processed from 80 mesh tire rubber powder to better ensure the air Spring performance and yield. When preparing the air spring cord hanging glue, it is necessary to strictly control the thickness and uniformity of the hanging glue, and cut and splicing according to the requirements, and wait for use.
The rubber air spring uses air as the medium when it works, and is mainly used for balancing, buffering, and transmitting pressure. Chlorinated butyl rubber is processed as the main raw material, and tire reclaimed rubber can be reasonably added to the rubber compound of each rubber layer. To reduce the production cost of rubber air springs, air spring processing enterprises can also add 10-20 parts of fine tire reclaimed rubber powder or activated tire rubber powder, chlorinated butyl reclaimed rubber and other rubber regeneration resources to the formula. Discuss relevant issues with you.
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