Rubber additives are essential functional materials in the rubber industry. During the process of converting raw rubber into high-performance products, additives – despite their relatively small dosage – play a decisive role in vulcanization efficiency, processability, mechanical strength, and service life of the finished goods.

Based on their functions, rubber additives can be mainly classified into the following categories:

Vulcanization system additives – Include curing agents, accelerators, activators, and scorch retarders. They are responsible for crosslinking the linear rubber macromolecules into a three-dimensional network, imparting elasticity and mechanical strength, while controlling curing speed and processing safety.

Protection system additives – Chiefly antioxidants and antiozonants. They effectively inhibit or delay degradation caused by heat, oxygen, ozone, light and other environmental factors, significantly extending the service life of rubber products.

Reinforcing and filling system additives – Reinforcing agents (e.g., carbon black, silica) greatly improve mechanical properties such as tensile strength and abrasion resistance. Fillers (e.g., calcium carbonate, talc) are mainly used to adjust hardness, reduce cost, and improve processability.

Processing system additives – Include plasticizers, dispersants, mold release agents, tackifiers, etc. They improve processability during mixing, calendering, extrusion, molding and other operations, increasing production efficiency and product quality.

Specialty functional additives – Such as peptizers (to reduce viscosity), adhesion promoters (to enhance bonding between rubber and reinforcement), deodorants, etc., used to meet specific process or performance requirements.

Selecting appropriate rubber additives requires balancing performance, cost, processing conditions, and environmental considerations. Our company offers consistent quality and a comprehensive range of rubber additives, along with professional technical support and formulation optimization services for different rubber types and service conditions, helping customers achieve efficient production and outstanding product quality.