We offer a comprehensive range of treatments for adhesion of aramid, glass, nylon, polyester, silica and ceramic fabric to peroxide curing rubbers – the most common of which are silicone VMQ rubber and peroxide EPDM, FKM and NBR.
All our treatments are water based and replace traditional solvent systems. Our water based systems give excellent adhesion and have a long shelf life – normally 6 months – for easy factory storage and production. Compotex applies the peroxide adhesives on to the textile, then our customers calendar or lay up the textile with the peroxide curing rubber.
We use many different peroxide technologies, including silane technology, and match fabric and rubber specifications to the peroxide bonding needed. At its best, the adhesion strength of our peroxide treatments are stronger than the breading strength of the rubber, so the peroxide bond is not the weak point in the manufactured part.
We have more information here for adhesion to the sulphur curing rubbers and our RFL bonding systems.
Here are some examples of the range of peroxide bonding Compotex do.
Para-Aramid to peroxide EPDM
We offer a special treatment for para-aramid fabric for adhesion to peroxide curing rubber. This complex peroxide bonding technology is especially appropriate for high tensile peroxide rubbers like EPDM as well as peroxide NBR and FKM.
Para-aramid fabrics do not bond easily to peroxide rubbers, so the peroxide technology used by Compotex involves a preparation dip for the p-aramid fabric followed by a top dip coat.
EPDM is particularly difficult to bond to on account of its chemical inactivity. This peroxide bonding process offers customers a special opportunity to reinforce EPDM rubber with a high performance technical fabric. The bond between the aramid and the EPDM is good, which gives a dynamic finished part a long shelf life.
Because aramid fabrics are high performance, the peroxide coating process is advanced technology, giving high performance results.
Aramid fabrics will also bond to Sulphur curing Natural, Neoprene and Nitrile rubber using RFL bonding technology.
The RFL coatings are normally for adhesion to NR/SBR, CR (Neoprene) and NBR.
Nylon to peroxide rubber
Nylon (polyamide) is widely used for rubber reinforcement. There are two bonding technologies for nylon fabric, RFL for sulphur curing rubber like Natural and SBR, Neoprene and Nitrile rubber, and peroxide bonding for the peroxide curing rubbers like EPDM, FKM and NBR.
The peroxide technology uses a preparation dip for the nylon fabric followed by a top dip coat.
This bonding technology opens up new possibilities for our customers. Solvent coating has traditionally been used for bonding to difficult compounds. This new bonding technology gives companies the opportunity to move away from solvents when using peroxide rubbers like EPDM, FKM and NBR. The Compotex water based peroxide technology has a long shelf life, commonly 6 months, and provides new opportunities in the manufacture of specialist peroxide curing rubber parts.