The research group of the Skoltech International University (Moscow) studied the effect of technological additives of aluminum hydroxide and zinc stearate on the kinetics of polymerization of thermosetting resins used in pultrusion. Scientists from Moscow have shown that the additives significantly affects the rate of polymerization during pultrusion.
Structural elements from fiber-reinforced polymer are widely used in civil, marine and road construction due to their advantages over traditional materials such as steel, wood and concrete. Such structures are made using the pultrusion method, in which the material is polymerized in a continuous drawing process.
Optimizing the pultrusion process involves careful consideration of many of the parameters that affect the quality of the final product. One of the parameters should considered is the composition of the polymer blend. For an accurate description of the pultrusion process, a suitable model of the kinetics of polymer resin curing is required, depending on the presence of certain technological additives.
The correct selection of the polymer resin cure model allows to determine the maximum possible draw rate. In turn, high speed of maintaining the quality of the resulting profiles is necessary to increase the efficiency and, consequently, the profitability of the pultrusion process.
News source: https://polymerbranch.com/