Method for preparing granulating auxiliary agent for processing plastic

A plastic additive and granulation technology, which is applied in the field of preparation of granulated antioxidants for polyoxymethylene processing, can solve problems such as addition, and achieve the effects of simple operation, increased thermal decomposition temperature, and improved thermal stability of products

Inactive Publication Date: 2008-08-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also mentioned in the technology that ethylene wax and other low melting point substances are added to the auxiliary agent as the binder of the auxiliary agent system, and the granulation auxiliary agent is prepared by melt extrusion with a screw extruder. Necessary ingredient acts as a binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] After fully mixing 200g of antioxidant 1010, 100g of melamine, 20g of magnesium hydroxide, and 80g of monoglyceride stearate, add 40mL of acetone, mix evenly, and use a twin-screw extruder to extrude at room temperature, pelletize, The diameter of the particles is 1-2 mm, and the length is 2-3 mm. The obtained granulation aid is air-dried.

Embodiment 2

[0036] After fully mixing 200g of antioxidant 1010, 100g of melamine, 20g of magnesium hydroxide, and 80g of monoglyceride stearate, add 80mL of acetone, mix evenly, and use a twin-screw extruder to extrude at room temperature, pelletize, The diameter of the particles is 1-2 mm, and the length is 2-3 mm. The obtained granulation aid is air-dried.

Embodiment 3

[0038] After fully mixing 200g of antioxidant 1010, 100g of melamine, 20g of magnesium hydroxide, and 80g of monoglyceride stearate, add 40mL of ethanol, mix evenly, and use a twin-screw extruder to extrude at room temperature, pelletize, The diameter of the particles is 1-2 mm, and the length is 2-3 mm. The obtained granulation aid is air-dried.

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Abstract

The invention relates to a preparation method of granulating agent for plastic processing, in particular to a preparation method of granulating anti-oxidant for metaformaldehyde processing. The granulating agent is composed of anti-oxidant, common stabilizer, acid absorber and lubricant. The preparation method comprises mixing the powder agents aforementioned uniformly, using acetone alcohol and water as adjuvants, adding at least one adjuvant into the uniform powder agent, using twin-screw extruder to extrude and granulate at room temperature, drying to obtain granulating agent. The agent has high rigidity and non dust generation in carriage and transmission. The granulating agent has significant alloying effect, which can be used in metaformaldehyde resin to obtain lower yellow index, higher thermal decomposition temperature, higher product thermal stability and better application effect than the metaformaldehyde resin applied with powder agent.

Description

technical field [0001] The invention belongs to the technical field of preparation of plastic additives, and relates to a preparation method of granulated additives for plastic processing, in particular to a preparation method of granulated antioxidants for polyoxymethylene processing. The invention makes the application of the additive system for plastic processing simpler and better in use effect. Background technique [0002] At present, with the rapid development of the plastic industry, in order to improve the processing performance of the resin and the overall performance of plastic products, it is necessary to add various additives to the resin during the processing process, including antioxidants, co-stabilizers, acid absorbents, Lubricants, etc. Due to the wide variety of additives required, and most of the additives used are in the form of powder, various additives are added in the process of processing. The process is cumbersome, and dust pollution is easily gene...

Claims

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Application Information

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IPC IPC(8): C08K5/00C08K13/02C08K5/13C08K5/16C08K5/098C08K5/10C08K3/22C08L59/02B01J2/20
Inventor 向明杨锋蔡燎原蓝方
Owner SICHUAN UNIV
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