PVC recycled materials have high mechanical strength, light weight, insulation performance, high strength, easy processing, corrosion resistance, etc. Widely used in various fields, such as construction, pipe, electronics, automotive industry, packaging 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, instead of traditional cast iron pipes, indoor and outdoor drain pipes, wire threading pipes, and communication cable sheaths.
Recycling technology of PVC pipe recycled materials
PVC recycled materials obtained by extrusion and recycling of waste PVC pipes are often used to make wire sheaths for circuit laying in buildings, and are required to not collapse when heated and bent.
Generally, 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.
Soft PVC pipe material needs to be used with hard pipe material, or other inorganic fillers are added to ensure its processing energy and performance to meet the needs.
PVC pipe recycling materials use precautions
After the plastic pipe is reprocessed, the performance is reduced to varying degrees, mainly caused by photoaging, oxidation and heat aging. The degree of performance degradation depends mainly on the service life and environment.
The waste edge produced by the molding processing plant, the waste product. The performance of the recycled material is reduced very little, and it can be used as a new material; the indoor use, the product with a short service life, the performance of the recycled material does not change much; Long product life, poor environment (such as pressure, electric field, chemical medium, etc.) product performance is poor, and even can not be recycled.
During the regeneration process, the thermal degradation of PVC occurs, and the color of the recycled material changes from shallow to deep. Industrial plastic products are not recommended for incorporation or direct use of recycled materials.