Polyimide Neximid MHT-R
Resin for High Temperature Applications
Nexam Chemical Holding AB, Lund, Sweden, introduces Neximid MHT-R a new ”easy to process” resin for use in high temperature applications, with Tg above 400°C. The resin is primarily intended for use in Resin Transfer Molding (RTM) of high temperature composite parts for the aerospace industry. Other areas, such as machine manufacturing industry and different transport sectors will also benefit from this material where metal replacement of parts exposed for high temperatures are possible.
Neximid MHT-R is a polyimide resin which is based on Nexam Chemical’s crosslinkers Neximid 100 (PEPA) and Neximid 400 (EBPA) in combination with other high temperature resistant monomers. According to the manufacturer, Neximid MHT-R, creates vital benefits for both composite manufacturers and end users. It allows automation with higher levels of productivity and quality control instead of today’s labor intensive process, which leads to huge savings of time and cost for manufacturers. The end customers will benefit from a higher level of sustainability and lower costs compared to the metal-based applications in use today, due to lower weight and avoiding metal fatigue among other things.
The resin has a unique combination of advantages such as a high softening temperature (Tg): from 330°C and up to 420°C via post-curing. This is superior to most other materials and polyimides on the market. Another advantage is the very low melt viscosity at processing temperatures which enables superior processing properties. The resin is provided as a dark amber solid or light yellow coarse powder or solid in room temperature. Melting of the powder occurs between 100-120°C and viscosity is below 1000 mPas. Curing onset is about 320°C and curing maximum is at 370°C.
Nexam Chemical Holding AB
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