Introduction
Rubber products are widely used in various fields due to their excellent elasticity and wear resistance. However, with the increasing market demand for product performance, toughness has become one of the important factors affecting the quality of rubber products. In this context, this article will analyze the key additives for improving the toughness of rubber products from a professional perspective.
Definition and importance of toughness
Toughness is the ability of a material to absorb energy and undergo plastic deformation under stress conditions. For rubber products, toughness directly affects the durability and safety of the product. Improving the toughness of rubber products can not only enhance their performance in practical applications, but also greatly increase the market competitiveness of the products.
Types and functions of key additives
In rubber manufacturing, adding specific additives can significantly improve the toughness of products. Common types of additives include:
Toughening additives: such as polyvinyl alcohol (PVA) and polyurethane, which can form an elastic network structure inside the rubber and improve the deformation ability of the product.
Plasticizers: such as diphthalate esters (DOP), which improve toughness by lowering the glass transition temperature (Tg) of rubber.
Fillers: such as carbon black, silica, etc., can increase the strength of rubber and increase flexibility after surface modification.
Selection and proportion of additives
The selection and use of additives need to be reasonably proportioned according to the specific needs of rubber products. Generally, in plastic compounds and rubber formulas, the proportion of toughening additives should be controlled between 10%-30% to achieve the best toughness effect. At the same time, the use of other additives also needs to consider the chemical compatibility between each other to ensure the overall performance of rubber products.
Conclusion
Improving the toughness of rubber products is inseparable from the scientific application of additives. By reasonably selecting and matching various additives, we can effectively improve the performance of rubber and enhance its competitive advantage in the market. I hope that the analysis in this article can provide valuable reference and inspiration for peers in related industries.
