VESTAMID^® HTplus R—for direct bonding to rubber

Our latest development exploits the high heat deflection temperature (above 280°C) and dimensional stability of VESTAMID® HTplus, particularly in the temperature range of 120-140°C, in addition to offering another very special feature: the possibility of direct bonding to a number of elastomers. The elimination of adhesion promoters in Evonik-patented plastic-rubber (K&K) composites reduces the number of work steps and the cycle times, thus saving costs.

Compared with the other polyamides—PA 66 and PA 612—used in plastic-rubber composites, PPA has higher strength and rigidity, particularly in contact with moisture, long-term heat resistance up to 150°C, and low tendency to creep. Thanks to the higher heat deflection temperature than for PA 612 it is possible to vulcanize even thin thermoplastic parts along with rubber up to 190°C without deformation of the plastic part.

Evonik offers three heat-stabilized product grades for plastic-rubber composites:

• VESTAMID^® HTplus R1033 and 1133 are 30% glass-fiber reinforced
• VESTAMID^® HTplus R1035 contains 50% glass fibers

These molding compounds are particularly suitable for parts subjected to high temperatures.

P = peroxide A =amine * = under investigation

More detailed information is available from our experts.