Microwave solid-state reaction deviceOverview:

Microwave refers to electromagnetic waves with a frequency of 0.3~300GHz. Materials will undergo physical phenomena such as heating and melting under the action of microwaves, as well as chemical reactions. Microwave radiation can cause chemical reactions to produce several times or even tens of times higher efficiency than conventional methods at the same or even lower temperature rise. By utilizing this characteristic, microwave radiation can be used for chemical synthesis, or liquid resins can be solidified through microwave action, which is known as microwave curing technology.

Microwave solid-state reaction devicecharacteristic:

By adopting a single wave mode, the microwave absorption (reaction power) can be measured. It is a device that uses microwaves for solid-phase peptide synthesis. Compared with traditional devices, it can significantly shorten reaction time and improve recovery efficiency. The radiation method adopts a microwave liquid-phase reaction device.

Purpose:

The research on microwave curing systems involves free radical polymerization (such as acrylic resin, unsaturated polyester/styrene system), lactone ring opening polymerization, epoxy resin/amine, epoxy resin/anhydride system, etc. Research has shown that compared to traditional thermal curing, microwave radiation curing can significantly accelerate the curing speed and improve the physical properties of the cured product in many cases. For example, using 4,4-diamino-diphenylmethane (DDM) as a crosslinking agent, polyurethane/epoxy composites were prepared by microwave curing. It was found that the chemical structure of the cured product was the same as that of traditional thermal curing, but the curing efficiency was much higher than that of thermal curing. The elastic modulus of the material obtained by microwave irradiation for 30 minutes is 1101MPa, while it takes 6 hours of heat curing at 120 degrees Celsius to achieve the same performance. Methacrylic acid can achieve a conversion rate of over 90% in 4 to 10 minutes through microwave radiation bulk polymerization, while traditional bulk polymerization requires 3 to 5 hours to achieve the same conversion rate.