Method for preparing environment-friendly high-performance PVC (polyvinyl chloride) rack adhesive powder

Abstract

The invention discloses a method for preparing environment-friendly high-performance PVC (polyvinyl chloride) rack adhesive powder, and belongs to the field of high-polymer material modification processing. The method includes adding, by weight, toughening agents, solid toughening agents, nucleating agents, sensitizers, lubricants and antioxidants into 100% of polyvinyl chloride powder; sufficiently mixing raw materials with one another by the aid of color master batch to obtain mixtures, feeding the mixtures into an extruder, and extruding the mixtures from the twin-screw extruder; setting the temperatures of raw materials at various sections of temperatures of the twin-screw extruder in heating procedures, extruding the raw materials and then cutting the raw materials to obtain particleswith the sizes of 3-5 mm; irradiating the obtained particles by the aid of rays in the air, then grinding the particles at the low temperatures to obtain powder and packaging the powder. The method has the advantages that the nucleating agents are added into the environment-friendly high-performance PVC rack adhesive powder, accordingly, the crystallinity of PVC materials can be improved, free radicals is guaranteed to be sufficiently cross-linked, the irradiation stability and the temperature resistance of PVC can be enhanced, and the mechanical properties and the heat resistance of the PVCcan be improved.

Description

Technical field: [0001] The invention relates to a production method of environmentally friendly and high-performance PVC hanger rubber powder, which belongs to the field of polymer material modification and processing. Background technique: [0002] With the increasing application of engineering plastics in daily life, the surface treatment of engineering plastics is also booming, and electroplating hangers are required for surface treatment of engineering plastics. Another industry is circuit board handling. With the development of the information society, circuit boards are applied to all aspects of society, and the etching of circuit boards is more and more applied to more hangers. [0003] The traditional engineering plastic surface treatment hanger uses liquid PVC green hook glue. The production and processing of PVC green hook glue is very simple, that is, add PVC resin powder and liquid plasticizer such as DOP into the mixing tank in a certain proportion, add color ...

AI Technical Summary

Problems solved by technology

The processing is simple and convenient, and the efficiency is high, but this product has many disadvantages: First, the liquid green hook glue has a small solid content and a very high VOC content of 30-40%. When the hanger is glued, the oven is heated to 180-200 ℃, a large amount of VOC volatilizes, a lot of irritating smell, and a lot of pollution to the surrounding environment

Thirdly, the transportation of liquid green hook glue is inconvenient, and the green hook glue is packaged in plastic barrels, which will inevitably be bumped and missed during transportation, causing environmental pollution and other cargo pollution

Third, the construction of liquid green hook glue is inconvenient. Because it is a liquid, the temperature requirements are harsh when the copper hanger is glued. The heating temperature of the copper hanger is high and it is easy to drip. When the temperature is low, it is difficult to apply glue. As many as 3-4 times, the efficiency is low, and now the labor cost is increasing day by day, resulting in low business efficiency

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