Efficient solid screw cleaning agent and preparation method thereof

Abstract

The invention discloses an efficient solid screw cleaning agent and a preparation method thereof. The efficient solid screw cleaning agent is prepared from ABS (acrylonitrile-butadiene-styrene) resin, PMMA (polymethyl methacrylate) resin, calcium carbonate masterbatch, a compatilizer and synthetic wax, wherein the cleaning capacity can be improved by means of the high-viscosity PMMA resin in the cleaning agent, compatibility between the ABS resin and the PMMA resin can be improved by means of the compatilizer, the abnormal phenomena of bar breakage and the like in an extruding granulation process are reduced, stabilization of production is facilitated, and the cleaning agent is discharged out of equipment by a follow-up material more easily during cleaning of the equipment; the capacity of the cleaning agent for cleaning residual substances can be improved by means of the synthetic wax; besides, inorganic powder is replaced with the calcium carbonate masterbatch, so that the phenomenon of powder floating is reduced, the production environment is improved, and harm of powder to the environment and the human body is reduced.

Description

technical field [0001] The invention relates to a screw cleaning agent, in particular to a high-efficiency solid screw cleaning agent and a preparation method thereof, belonging to the technical field of composite polymer materials and processing thereof. Background technique [0002] In the field of plastics, the most commonly used processing equipment is injection molding machines and extruders. When changing the type of plastic or the color of plastic products, since the processing equipment will contain residues from the previous batch, in order to remove these residues, it is necessary to Processing equipment is cleaned. The usual cleaning method is to add a large amount of raw materials into the barrel and heat it, and discharge the residue in the barrel continuously until the residue of the previous batch is discharged or the color of the discharge does not change. This cleaning method will waste a lot of raw materials, takes a long time, and the cleaning is not thor...

AI Technical Summary

Problems solved by technology

In the prior art, there is a technical scheme for cleaning the screw by using soaking liquid for screw cleaning, which consists of calcined diatomite, nano-alumina, tea seed powder, orange leaf powder, coconut powder, hydroxyethyl cellulose, straw ash, sugar beet Alkali, anti-rust additives, sodium linear alkylbenzene sulfonate, citric acid, sucrose ester, glyceryl oleate, sodium chloride, ethylene glycol ethyl ether and diesel oil, but the soaking solution needs to remove the screw from Take it out of the extruder, time-consuming and labor-intensive

In addition, there are screw cleaning agents prepared with PPA additives, calcium carbonate powder, foaming agent and LLDPE. This cleaning agent can effectively remove various impurities in plastic processing equipment and prolong the service life of the equipment. A large amount of inorganic powder is used in the process, which will affect the production environment and endanger the health of employees

There are also screw cleaning agents made of EVA or LDPE or elastomers, foaming agents, whitening agents and fillers. The cleaning material of the cleaning agent contains foaming agents, which can expand during the cleaning process. , that is, the volume of the cleaning material increases due to the expansion of the foaming agent during cleaning, thereby eliminating the cleaning dead angle, not only less cleaning material, lower cost of use, but also better cleaning effect, but the cleaning agent is added with whitening After use, the whitening agent is not easy to be carried out by the cleaning material, which will affect the subsequent products

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