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01-27-2017

Daron RTM, SMC and Pultrusion Resins

Ideal for Lightweight Structural Car Components

With a new series of Daron resins Aliancys A.G., Schaffhausen, Switzerland, is helping its customers to make carbon composites processing robust and fast. Daron RTM, SMC and Pultrusion resins provide manufacturing ability in large production series, and at a much lower cost.

It is anticipated by the Automotive industry that in the next decade additional major emission reductions will be imposed by legislators around the world for passenger cars. Changing to lightweight materials is regarded as a vital contributor for minimizing CO2 emissions. Carbon composites bring the desired combination of strength and lightweight capability. However, the cost of carbon composites is still considered prohibitive for broad introduction in high volume passenger car manufacturing. This is caused by the high market price of carbon fiber and insufficient productivity of current RTM-based part manufacturing processes. As incumbent Epoxy resin solutions have long cycle times, it is a challenge for Tier Ones and OEMs to obtain parts in large production series.

Aliancys claims that its new series of Daron RTM, SMC and Pultrusion resins bring the “best of two worlds”, in terms of functional performance and processing, when compared with equivalent UPR, VE and Epoxy resins. Fit for use both with carbon and glass fibers, Daron resins enable to design lightweight composite components for many structural applications. Also, because they bring the right balance of tensile modulus and tensile strength as desired by Automotive OEMs, according to Aliancys.

Daron resins: right balance of tensile modulus and tensile strength (© Aliancys)

Daron resins: right balance of tensile modulus and tensile strength (© Aliancys)

Fit for Large Volume Production

With the novel Daron resin systems, parts can be produced at high processing speed. Molding cycle times are very low (unlike systems based on equivalent Epoxy resins): 1 min is typical for 2 mm of wall thickness. With SMC conversion processes this means production output is high and waste generated is minimal.

According to the manufacturer, the processing of the novel Daron resins is robust and easy, as it is relatively insensitive to variations in resin viscosity, curing system, temperature, and fiber sizing. Impregnation viscosity, resin flow and curing profiles are tunable over a broad range, without the risk of changing end-properties of the part. Yet processing is consistent when parameters are fixed. Post-cure is typically not required for reaching final part properties. Parts made with new Daron resins feature ultra-low emission and smell from the part.

Company profile

Aliancys AG

Stettemerstr. 28
CH 8207 SCHAFFHAUSEN

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