Nitrile Rubber Encyclopedia

Three ways to improve the adhesion of nitrile rubber

Create Date:2020-03-25 08:57:07Click volume:373
Three ways to improve the adhesion of nitrile rubber

Nitrile rubber is widely used in the production of oil-resistant and wear-resistant rubber products. Oil-resistant and abrasion-resistant rubber products produced using nitrile rubber / recycled rubber and rubber materials are more cost-effective and market competitive. Nitrile rubber has poor adhesion compared to natural rubber, neoprene, etc., and the adhesion of rubber has a lot to do with the performance of rubber products. So how to improve the adhesion of nitrile rubber / recycled rubber, further How to improve the performance and life of rubber products? You may wish to try the following three small methods.

1. Avoid the use of easily sprayable compounding agents

Frosting is a common problem in the production of rubber products. When nitrile rubber or recycled rubber is used to produce rubber products, the compounding agent precipitates on the surface, and the rubber tackiness decreases. Therefore, to improve the adhesiveness of the nitrile rubber compound, it is necessary to avoid the use of easy-to-spray compounding agents such as paraffin, accelerator TMTD, and sulfur.

2.Using rubber filler with significant reinforcement effect

Rubber fillers can be divided into reinforcing fillers and non-reinforcing fillers according to their reinforcing properties. Among them, active fillers with significant reinforcing effects can improve the self-adhesion of rubber by increasing the mechanical strength of the rubber. The particle size is small and the surface activity is large. Carbon black is ideal. White carbon black can be used in light-colored nitrile rubber products.

Excessive amount of non-reinforcing rubber filler will cause the nitrile rubber / recycled rubber surface to dry, and the self-adhesion of the rubber will decrease. Therefore, appropriately increasing the amount of rubber filler with significant2LLYY0325 reinforcement effect and reducing the amount of non-reinforcing rubber filler can increase the viscosity of the nitrile rubber compound to a certain extent.

3. Use tackifying resin

Tackifying resin can significantly improve the viscosity of rubber materials. Coomarone resins, terpene resins, petroleum resins, alkylphenol resins or rosin derivatives can all improve the adhesion of nitrile rubber compounds. Combined with a softening agent with a significant tackifying effect, the molecular chain activity of the nitrile rubber / recycled rubber can be increased, thereby achieving the purpose of improving the adhesiveness of the rubber compound.

For nitrile rubber or nitrile rubber, usually the higher mechanical strength of the nitrile rubber is relatively better. When using nitrile rubber or recycled rubber to produce rubber products that have strict requirements on adhesion, you must first select a suitable nitrile rubber compound, and then adjust the type and amount of the compounding agent in the formula in accordance with other performance requirements of the rubber product. Improve the adhesion of nitrile rubber. Do you have a better way to improve the adhesion of nitrile rubber?