When using reclaimed rubber to produce rubber products, a reasonable formula can make the rubber material meet the performance and processing performance of rubber products while reducing more raw material costs and production energy consumption. In actual production, the formula of reclaimed rubber products is mainly composed of raw rubber, vulcanization system, anti-aging system, reinforcing filling system, softening and plasticizing system and other special compounding agents; the main functions of different compounding agents in reclaimed rubber products are different. Shopping points vary widely.
1. Reclaimed rubber product formula - raw rubber
Raw rubber is the main material of reclaimed rubber products, which can impart basic mechanical properties to the rubber. The raw rubber in the formula of reclaimed rubber products is mainly reclaimed rubber, and different varieties of reclaimed rubber can provide different special properties for the rubber.
Selection points: When choosing reclaimed rubber used in reclaimed rubber products, focus on the main mechanical properties of the rubber. Choose different varieties of reclaimed rubber, which can be used alone, or used together with reclaimed rubber, reclaimed rubber and raw rubber, or with plastics , give full play to the characteristics of different polymers, and obtain better comprehensive effects.
2. Reclaimed rubber product formula - vulcanization system
The main function of the vulcanization system in the formulation of reclaimed rubber products is to speed up the vulcanization speed, reduce the vulcanization time, improve the production efficiency, and improve the mechanical properties of the reclaimed rubber vulcanizate.
Selection points: When designing the vulcanization system of reclaimed rubber products, the vulcanization system is generally determined according to the chemical structure characteristics of the reclaimed rubber and the main physical property requirements of the rubber compound. For multi-component reclaimed rubber products, in order to keep the vulcanization degree of the product 2ELYY46 consistent, the vulcanization system and vulcanization speed of each compound should be different. When reclaimed rubber is used in combination with other rubbers, the vulcanization system needs to consider the co-vulcanization problem.
3. Reclaimed rubber product formula - anti-aging system
The role of the anti-aging system in the formulation of reclaimed rubber products is to improve and improve the aging resistance of the rubber compound, so as to achieve the purpose of prolonging the service life of the product. In actual production, the aging resistance properties of rubber compounds mainly include heat resistance, oxidation resistance, ozone resistance, weather resistance, etc.
Selection points: According to the use conditions of reclaimed rubber products, select chemical antioxidants and physical surface protective agents with better performance. When designing an anti-aging system for reclaimed rubber products, it is necessary to consider the effect of anti-aging agents on the vulcanization rate, especially p-phenylenediamine anti-aging agents.
4. Reclaimed rubber product formula-reinforcing filling system
The function of the reinforcing filling system in the formula of reclaimed rubber products is to improve the mechanical properties of the rubber compound, so that the rubber compound has better quality and use value, and reduces the cost.
Selection points: When designing a reinforcing and filling system for reclaimed rubber products, carbon black with good reinforcing performance should be selected for products with high performance requirements or some parts of multi-component products; different types of carbon blacks should be selected for different products or components. ; Some products and components can use an appropriate amount of inorganic fillers to reduce costs. When choosing reinforcing agents and fillers for reclaimed rubber products, it is also necessary to pay attention to the processing properties of the rubber.
5. Reclaimed rubber product formulation - softening and plasticizing system
The main function of the softening and plasticizing system in the formulation of reclaimed rubber products is to reduce the time of plasticizing and mixing, and reduce the consumption of manpower, material resources and power; the use of softeners and plasticizers can also improve the flexibility and self-adhesion of the rubber compound, improve the Rubber calendering, extrusion, molding and other processing performance, improve some physical and mechanical properties of rubber.
Selection points: According to the polarity of reclaimed rubber, natural rubber and synthetic rubber, choose different types of softeners to obtain better compatibility and enhance softening effect; if necessary, decide whether to use plasticizers according to process conditions.
6. Reclaimed rubber product formula - special compounding system
When reclaimed rubber products have requirements for some special properties of the rubber material, such as the steel wire winding hose needs to improve the adhesion among the steel wire and the rubber material, an appropriate amount of adhesive can be added; to improve the scorch safety of the rubber material, it is necessary to use A scorch retarder that can prolong the vulcanization induction period, etc. In short, it is necessary to select different types and varieties of special compounding agents according to the special requirements of reclaimed rubber products. Later, the editor will have the opportunity to discuss with you the application skills of special compounding agents in the production of reclaimed rubber products.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits