Competitive Hot Sale Top Quality High Activity Resin for Hand Paste Forming Process

When various unsaturated polyesters are uncured, they are liquids ranging from low viscosity to high viscosity. After adding various additives and heating, they solidify and become rigid or elastic plastics, which can be transparent or opaque. The main use of unsaturated polyester is to make fiberglass reinforced plastic, which is one of the main varieties of reinforced plastics. Its molding method includes: ① Hand lay method, which is to spray a layer of resin on the mold coated with release agent, then lay a layer of reinforcing material, squeeze out bubbles, and repeat the operation until the desired thickness is reached, and finally cure and demold. ② The laminating method is to immerse glass cloth in unsaturated polyester and then laminate it through hot pressing and curing. It has excellent tensile strength and impact toughness, low relative density, good thermal and electrical insulation properties, as well as good light transmission, weather resistance, acid resistance, and sound insulation. Its price is much cheaper than epoxy resin fiberglass, so it is widely used in the manufacture of radar antenna covers, aircraft parts, car shells, small boats, transparent corrugated boards and other building materials, sanitary ware, chemical equipment and pipelines.