Low-cost solid screw cleaning agent and preparation method thereof

Abstract

The invention discloses a low-cost solid screw cleaning agent. The low-cost solid screw cleaning agent is prepared from the following components in parts by weight: 15-35 parts of matrix resin, 65-85 parts of inorganic powder, 0.3-0.8 part of antioxidant and 3-8 parts of lubricant, wherein the inorganic powder is prepared by mixing the following raw materials in percentage by mass: 70-80% of silicon dioxide, 15-25% of aluminum oxide and 0-5% of second metal oxide. The screw cleaning agent prepared by the invention has the advantages of convenient processing, low cost and convenient cleaning process, belongs to a nontoxic pollution-free material, has the characteristics of simple preparation process, efficient screw cleaning and the like, can be widely used for the screw cleaning process in the twin screw engineering plastic granulation industry, and can greatly reduce the consumption of a resin machine-cleaning material.

Description

technical field [0001] The invention relates to the technical field of modified materials, in particular to a low-cost solid screw cleaning agent and a preparation method thereof. Background technique [0002] Plastic products have the characteristics of light weight, low price, easy processing, good performance and various varieties. It is one of the most important materials in modern society. In the process of plastic processing, there will be more or less raw materials accumulated in processing machinery such as mixers and extruders, which will cause waste of raw materials and environmental pollution during operations such as color change and refueling. At present, there are four common methods for extruder cleaning: [0003] 1. Take out the screw and clean it with a wire brush. This method is relatively slow, but the cleaning is thorough. Generally, laboratories will do this, because the residue will have a greater impact on the next use, resulting in large errors in...

AI Technical Summary

Problems solved by technology

[0005] 3. Rinse with materials similar to the production materials and then take them out for cleaning. For example, after blending PP and solid powder, you can use HDPE to rinse and then clean HDPE. This is because HDPE is much easier to clean than PP, but the waste is serious ,low efficiency

At present, the solid screw cleaning agents made in my country have certain limitations in terms of cleaning efficiency, environmental protection, and cost. For example, the more environmentally friendly resin cleaning agents are difficult to clean the dead corners and gaps of the screw barrel, and the cleaning efficiency is low; and The screw cleaning agent added with organic solvent, although it improves the cleaning efficiency, has the problem of environmental pollution

In addition, these two cleaning agents currently have cost limitations, and the mature products on the market are priced at 30-45 yuan / kg, resulting in high cost of use.