PVC windows and doors are essential fixtures in modern construction, renowned for their versatility, durability, and cost-effectiveness. Serving as substitutes for traditional materials like copper, zinc, aluminum, and wood, they have revolutionized architectural design.
Not only are PVC windows and doors lightweight, but they also boast exceptional toughness, corrosion resistance, and impressive anti-aging properties. Their affordability, wide range of colors, and robustness make them ideal choices for various applications, from public buildings to residential homes.
To create high-quality U-PVC window and door profiles, several key raw materials are utilized:
- PVC resin: Specifically formulated with a grade between K66 and K68 to ensure optimal performance and longevity.
- Filler: Preferably, Precipitated Calcium Carbonate (PCC) is used to enhance stiffness and reduce costs.
- PVC stabilizer: Options include lead-based one-pack stabilizers or Calcium Zinc stabilizers to maintain the structural integrity of the profiles.
- Internal lubricants: Essential for smooth processing, Calcium Stearate or Stearic Acid are commonly employed.
- External lubricants: Polyethylene (PE) wax ensures proper extrusion and surface finish.
- Impact modifier: Either Chlorinated Polyethylene (CPE) 135A or Acrylic Impact Modifiers (AIM) are added to improve impact resistance.
- Acrylic processing aid: Enhances melt strength and facilitates processing.
- Pigments: Rutile Titanium Dioxide and Optical Brighteners provide color stability and aesthetic appeal.