Classification, recovery and processing method of HIPS recycled material
At present, HIPS recycled materials with high impact strength polystyrene are rare, commonly known as engineering plastic computer chassis, keyboard, mouse, TV chassis and other electronic products. After recycling, crushing, screening and color separation, various performance additives are added, and then impurities are filtered out by a mother-and-child machine. Most injection molding plants only need to add their own molded nozzle materials at a ratio of no more than 20% for recycling. Due to repeated damage of the materials, can't get effective reinforcement, reinforcement and other performance supplements in time, the recovery and addition ratio is low, and at the same time reduce the various properties of the whole material, then, let's learn about the classification, recovery and processing methods of HIPS recycled materials!
Abandoned now.HIPS recycled materialHigh impact strength polystyrene is thin, commonly known as engineering plastic computer chassis, keyboard, mouse, TV chassis and other electronic products. After recycling, crushing, screening and color separation, various performance additives are added, and then impurities are filtered out by a mother-and-child machine. Most injection molding plants only need to add nozzle materials after molding and processing according to the proportion of no more than 20% for recycling. As the materials are damaged for many times, can't get effective reinforcement, reinforcement and other performance supplements in time, the recovery and addition ratio is low, and at the same time reduce the various properties of the whole material, then, let's learn about the classification, recovery and processing methods of HIPS recycled materials!
The electronic products in the market circulation can only be classified simply because they cannot be effectively classified and recycled. HIPS recycled materials are often mixed with metal screws, copper, iron and other electronic parts guide rails, even plastic materials are mixed with a variety of materials, the effective utilization rate is very low. Due to the need for application stability, the electronic material contains about 3% of silicone rubber, which brings the risk of network blockage in the modification process, and the material may also appear infusible silicone rubber. The appearance of the surface of the product is poor. Therefore, based on the above defects of the existing recycled material classification and recycling, it is necessary to improve the existing recycled material classification and recycling.
The purpose is to provide a HIPS recycled material separation recovery and processing method for the shortcomings of the existing technology, to solve the existing recycled material separation recovery and processing methods: low recovery rate, poor performance of recycled products and other shortcomings.
In order to achieve the above objectives, HIPS recycled materials are achieved by the following means:
HIPS recycled materialThe separate recovery and processing method is to crush the material, after a brine separation, dehydration, electrostatic separation, color separation, the second brine separation, dehydration to form a substrate, electrostatic separation with a high-voltage electrostatic separator, color separation with a color separator.
HIPS recycled materials break the traditional mode of simple mechanical manual separation and water washing material separation in the past. Modern precision separation equipment, high-voltage electrostatic separator (separating materials with small specific gravity difference), (using the principle of infrared light wave frequency of different colors), (silica gel separator) mechanically rub compressed materials with 1000N power value and concave-convex surface, and remove high-precision equipment such as silicone rubber pasted on plastic tables. The separation purity of the material has been increased to more than 99.5% at present, and the color of the material has been distinguished, effectively opening up the use and proportion of the material.
Since the HIPS recycled material is subjected to color separation, the separation purity of the base material is higher than that of the conventional recycled material. Can be directly modified according to the need of 100% color. It breaks the defect that traditional materials can only produce black and the addition amount cannot exceed 20%. In the modification process, a small amount of reinforcing agent styrene-butadiene-styrene block copolymer (SBS), antioxidant 1010, antioxidant 1076 and lubricant white solvent are added to help the material graft modification, increase the antioxidant function, meet various performance requirements, meet the stable physical properties of new materials and new material modified materials, can be widely reused, effectively improve the utilization rate of HIPS waste electronic materials, reaching a utilization rate of more than 98%, at the same time, the scope of the use of HIPS recycled materials is expanded.
Of course, the above-described embodiments are preferred embodiments and do not limit the scope of implementation of the present invention, so equivalent changes or modifications based on the structures, features, and principles described in the claims should be included in the scope of the claims of the present invention.
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