Although the adhesive can meet the user's requirements for tensile strength at room temperature, the user will ask for tensile strength at a certain high temperature when considering the performance of the product at high temperatures, which is not always possible. It is challenging to meet this customer demand.

1. Silicone rubber

At very high temperatures, silicone rubber gives higher high temperature tensile strengths than all other organic elastomers.

2. SBR

Blending NR with SBR in a 50:50 ratio (mass ratio) improves the high temperature stress-strain performance of SBR compounds.

3. EPDM

The Ziegler-Natta catalytic technology provides a unique high temperature crystallisation of the ethylene in EPDM, resulting in a higher high temperature tensile strength. Based on the orderly arrangement of the ethylene, some crystallisation goes through multiple crystalline structure transitions at temperatures above 75°C.

4. Neoprene CR

For CR-based adhesives, a W-type neoprene is used, to which 40 parts by mass of precipitated silica and 2 parts by mass of polyethylene glycol (PEG) are added to give the adhesive a high tensile strength at high temperatures.

5. Silica

In some cases, 10-20 parts by mass of precipitated silica can improve the high temperature tensile strength and tear resistance of the adhesive.