PVC recycled materials have light weight, insulation performance, high strength, easy processing and corrosion resistance. High mechanical strength, is widely used in packaging, pipe, electronics, construction, automotive industry and other fields. The application of PVC recycled materials has great advantages, especially in the field of pipes. PVC plastic pipes processed by PVC recycled materials are mainly used in the construction industry, replacing indoor and outdoor drainage pipes, wire threading pipes and communication cable protection pipes instead of traditional cast iron pipes.
Recycling technology for PVC pipe reclaimed materials:
PVC recycled materials obtained by extrusion and recycling of waste PVC pipes are commonly used to make wire sheaths for circuit laying in buildings, and are required to not collapse when heated and bent.
Usually, rigid PVC waste pipe materials contain impact modifiers and other modifiers, so the elongation at break and impact strength are better than that of pipe-grade PVC raw materials, but their fluidity is poor. When extrusion and regeneration, properly added A certain amount of new resin or other hard PVC waste materials with less filling capacity will help to improve the melt flow of the recycled material, and at the same time add an appropriate amount of stabilizer to reduce the degradation of PVC during reprocessing and use.
Compared with the pipe made of new PVC raw materials, the pipe made in this way has improved impact resistance and no other physical properties.
The soft PVC pipe material needs to be used together with the hard pipe material, or other inorganic fillers may be added to ensure that the processing energy and the use performance satisfy the use.
Precautions for the use of PVC pipe recycled materials:
After the plastic pipe is reprocessed, the performance is reduced to varying degrees, mainly caused by photoaging, oxidation and heat aging. The extent of performance degradation depends primarily on age and environment.
Waste edges and waste products produced during the production of molding plants. The performance of the recycled material is reduced very little, and it can be used as a new material; the product used for indoor use and short-term use has little change in the performance of the recycled material; while it is used outdoors, it has a long life and poor environment (such as pressure, electric field, Product properties such as chemical media are poor and cannot even be recycled.
During the regeneration process, the PVC undergoes thermal aging degradation, and the color of the recycled material changes from shallow to deep. Industrial plastics pipe is not recommended for incorporation or direct use of recycled materials.
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