A 145 gsm (grams per square meter) white fiberglass mesh typically contains the following components:
1. **Fiberglass Yarns or Strands**: These are the primary component of the mesh. They are usually made from glass fibers that are spun into yarns or strands. These fibers provide the mesh with its strength and durability. The thickness and density of these yarns may vary depending on the intended use of the mesh.
2. **Resin Coating**: Fiberglass mesh is often coated with a resin to improve its stability and weather resistance. The resin coating helps protect the fiberglass fibers from damage due to exposure to moisture, chemicals, and UV radiation. Common resin materials include epoxy, polyester, or vinyl ester. The white coloration may come from pigments or additives mixed into the resin.
3. **Additives**: Depending on the specific requirements of the application, the fiberglass mesh may contain additives to enhance its performance. These additives can include UV stabilizers to prevent degradation from sunlight exposure, flame retardants for fire resistance, anti-static agents to reduce static electricity buildup, and colorants for aesthetic purposes.
4. **Colorants**: In the case of white fiberglass mesh, colorants are added to give the mesh its white appearance. These colorants may be incorporated into the resin coating or applied as a separate layer.
Overall, a 145 gsm white fiberglass mesh typically consists of fiberglass yarns or strands coated with resin, possibly containing additives for enhanced performance, and colorants to achieve the desired white coloration. This type of fiberglass mesh is commonly used in applications such as reinforcing plaster, stucco, and concrete, as well as in wall insulation and other construction projects where strength, durability, and a white appearance are required.