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Low-cost solid screw cleaning agent and preparation method thereof

A screw cleaning agent and low-cost technology, applied in the field of modified materials, can solve the problems of difficulty in cleaning the screw barrel, low cleaning efficiency and high use cost, and achieve the effects of less resin consumption, improved production efficiency and low cost

Inactive Publication Date: 2017-10-03
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 15 parts of PP according to the mass ratio, weigh 85 parts of inorganic powder 1#, 0.3 parts of antioxidant 1010, and 8 parts of PE wax; put the weighed raw materials together into a banburying mixer with a volume of 150L for banburying , the banburying temperature is 200°C, and the banburying time is 30 minutes; the mass-mixed material is transported to a cone-double forced feeding-single-screw extruder with a screw diameter of 180cm, and melted by the single-screw extruder Mixing and extruding, and then pelletizing to make screw cleaning agent.

Embodiment 2

[0039] Weigh 35 parts of PE according to the mass ratio, weigh 65 parts of inorganic filler 1#, 0.8 part of antioxidant dioctadecyl thiodipropionate, and 3 parts of EVE wax; Banburying in a 150L internal mixer, the banburying temperature is 160°C, and the banburying time is 15 minutes; the mass-mixed material is transported to a cone-double forced-feeding-single-screw extruder with a screw diameter of 180cm , melted, kneaded and extruded by a single-screw extruder, and then pelletized to make a screw cleaning agent.

Embodiment 3

[0041] Take by weight 20 parts of ABS, weigh 80 parts of inorganic filler 1#, 0.3 part of antioxidant 1010, 0.2 part of antioxidant dioctadecyl thiodipropionate, 5 parts of calcium stearate; The good raw materials are put together into a banbury mixer with a volume of 150L for banbury mixing. The banbury temperature is 220°C and the banbury time is 20 minutes. Feeding - In the single-screw extruder, it is melted, kneaded and extruded by the single-screw extruder, and then pelletized to make a screw cleaning agent.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L91/06C08L69/00C08L25/06C08L55/02C08K13/02C08K3/36C08K3/22
CPCC08L23/12C08K3/22C08K3/36C08K13/02C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2265C08L23/06C08L25/06C08L69/00C08L2205/025C08L2205/03C08L91/06C08L55/02
Inventor 杨桂生廖雄兵朱敏记娉婷
Owner HEFEI GENIUS NEW MATERIALS
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