Epoxy acrylate resin, also known as vinyl ester resin, is a modified epoxy resin dissolved in styrene after the reaction of epoxy resin and acrylic acid. Showa Polymer Co., Ltd.'s vinyl ester resin uses unique technology and is the first company in the world to achieve industrialization and success. Shanghai Showa began producing vinyl ester resins in early 2002, and its production scale reached the largest production scale in China.
Excellent properties of epoxy acrylate
Epoxy acrylate resin has the excellent characteristics of epoxy resin, but it is more excellent in curability and moldability, not as cumbersome as epoxy resin, it is a thermosetting resin. It has excellent water resistance, hot water resistance, drug resistance, adhesion and toughness. It can be cured by organic peroxide curing method (low temperature-high temperature) or light curing method, and is widely used in the following fields: corrosion-resistant FRP products, such as glass fiber reinforced plastic tanks, pipes, towers and corrosion-resistant grids; Corrosion engineering, such as cement-based or iron-based FRP lining, high corrosion-resistant floor; high-strength FRP, such as pultruded FRP profiles, sporting goods, FRP boats, etc.; heavy anti-corrosion glass flake coating; other such as UV ink, heavy anti-corrosion industry Floor etc. Showa Polymer Co., Ltd. successfully developed epoxy acrylate resin in the 1960s using its own technology, and commercialized it for the first time in Japan, occupying 50% of the Japanese market. Excellent quality and technology, as well as 40 years of performance Received high praise from home and abroad.
Synthesis process of photosensitive phenolic epoxy acrylate
The research and application of epoxy resin has always been a subject of interest to scientists and engineers. Because of its excellent solvent resistance, acid and alkali resistance, excellent adhesion to metals, good thermal stability and electrical insulation, color retention, etc., it is still in the automotive industry, electrical industry, aviation industry And cutting-edge industries occupy an irreplaceable position. However, epoxy resins have no photochemical activity, which limits the application of epoxy resins. The research team modified F-44 epoxy resin and synthesized a photosensitive phenolic epoxy resin containing both epoxy groups and acrylic groups. The modified resin not only retains the general F epoxy resin Advantages, and the introduction of photosensitive groups has brought convenience to the application of modified F-44 resin, expanding the application field. This article further discusses the production process of photosensitive phenolic epoxy acrylic resin, with a view to finding a cheap, safe and non-toxic catalyst to replace the expensive quaternary ammonium bromide, to reduce production costs and optimize the production process.
Using acrylic acid and F-44 epoxy resin as raw materials, a photosensitive epoxy acrylate resin confirmed by FI-IR to contain both acrylic groups and epoxy groups was synthesized. The effects of catalyst type, catalyst dosage, reaction time, and reaction temperature on the conversion of acrylic acid were studied. It was found that using triethylamine as the catalyst, at a higher reaction temperature (95°C), the larger the amount of triethylamine, the greater the reaction. It can be completed in a short time; appropriately increasing the temperature of the reaction is conducive to the progress of the reaction and can shorten the production cycle. The photochemical activity of the modified resin was measured and verified by ultraviolet light exposure and FT-IR tracking the change of carbon-carbon double bond content, and the product was confirmed to be an ultraviolet photosensitive resin. The optical activity and performance of the product were measured, and the results showed that the prepared resin had excellent photochemical activity, and the coating film made with the resin retained the excellent adhesion, acid and alkali resistance, and solvent resistance of the original epoxy resin.