The term for plastic windows, standard text in China and Europe is UPVC Window, which is commonly used in the North n region as Vinyl Window.
UPVC = Unplasticized Polyvinyl Chloride.
What is unplasticized？
Unplasticized means that no plasticizer (also known as plasticizer) is added. This is widely used in industry, polymer materials additives, plastic flexibility to enhance, easy processing, plasticizer dosage from less to more divided into hard, semi-hard, soft.
UPVC is an unplasticized polyvinyl chloride. It is a hard type of plasticizer and is generally considered to be hard if used in less than 15 portions. About 15-25 PHR is semi-rigid RS-PVC. More than 25 phr of SPVC (Soft-PVC) .
Before we begin to explore the UPVC Window, let’s look at the materials that make up the main material of a plastic Window. Includes PVC resins and various processing aids.
PVC resins are derivatives of the petrochemical industry. Ethylene from petroleum refining and chlorine from salt are chemically synthesized.
PVC resin is one of the most widely used synthetic materials in the world. It has good toughness, ductility, easy setting, strong processability and can be recycled.
Because of its advantages in processing and application, PVC has the advantage over other organic materials and can replace non-plastic materials in many fields, such as metals.
Building materials-typically plastic doors, windows and pipes-currently consume about 1.6 million tons of PVC resin annually in Europe for the production of plastic door and window profiles. Plastic doors and windows are safe and can be installed in sensitive environments such as hospitals, nurseries, and schools.
There are other such as medical and industrial supplies, home appliances and so on, PVC is recognized and applied.
PVC is fully recyclable, with 480,000 tons of recycled PVC used in the European market alone in 2015.
Processing aids-heat stabilizer
PVC resin is a thermoplastic material, plastic doors and windows can be used for more than 30 years, in the long process of continuous use by light and heat conduction. PVC dissolves easily, releasing hydrogen chloride and causing discoloration of profiles. So stabilizers are important.
Usually in the window section of the raw material ratio will be added to the right amount of heat stabilizer, stabilizer of calcium-zinc stabilizer, organotin stabilizer and lead salt stabilizer.
Calcium and zinc stabilizers are currently standard in the European market. In 2010, European profile manufacturers organized a coalition of green formulas and voluntarily promoted green formulas to guide the market. This formulation is more technically demanding, with a smaller window for extrusion and debugging of various parameters. The increase in costs is obvious.
In North , organotin stabilizers are dominant.
Some high-end brands in the Chinese market will use calcium zinc stabilizer, some manufacturers will use organotin stabilizer, do a lot of lead salt system.
Processing aids-anti-impact agent
PVC itself is a brittle material, through the addition of anti-impact agent to improve the impact strength, usually plastic doors and windows processing environment needs not less than 17 degrees, installation environment temperature not less than 5 degrees.
Installed windows are exposed to sunlight, UV and solar energy in the spectrum will make the profile discoloration and thermal deformation, adding titanium dioxide can improve the profile of heat resistance, weather resistance.
The appearance color of the plastic door and window is more and more now, but the stability of the color profile and the deformation after absorbing heat, the weld angle crack problem is also more and more. White profiles have better stability, less heat absorption, price is also dominant, plastic doors and windows should be the main push white.
Color windows, we recommend the laminating process, using less heat absorption of the window film, such cold film will absorb less energy and reduce the surface of the profile heat absorption.
High mechanical stability, high hardness
good abrasion resistance
Flame retardant and self-extinguishing
Alkali and acid resistance
not harmful to humans or the environment
Low thermal conductivity
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Post time: Nov-17-2022