Preparation method of dehydrated master batch

A technology of masterbatch and dispersant, which is applied in the field of preparation of dehydrated masterbatch, which can solve the problems of easy crystal point generation, network blocking, poor dispersibility, etc., and achieve the effects of facilitating processing, reducing energy consumption and improving quality

Inactive Publication Date: 2018-09-28

常州圣雅塑母粒有限公司

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AI-Extracted Technical Summary

Problems solved by technology

The existing dehydrated masterbatch has poor fluidity and poor dispersibility, and it is easy to produce cr...

Abstract

The invention relates to the field of master batches, and particularly to a preparation method of a dehydrated master batch. The preparation method of the master batch comprises the following steps: (1) uniformly mixing polyethylene, calcium oxide, a dispersant and a stearate according to a proportion to obtain a mixture; (2) putting the mixture into a high-speed mixer, carrying out stirring and carrying out cooling, wherein the stirring time is 30 minutes, the cooling time is 5-10 minutes, and the cooling temperature is 20 DEG C; and (3) pouring the cooled mixture into a twin-screw extruder and carrying out granulation. The master batch prepared by the preparation method can absorb moisture contained in the raw materials, the processing is facilitated, the energy consumption is reduced, and the quality of finished products is improved.

Technology Topic

Cooling temperatureMineralogy +9

Examples

Experimental program(1)

Example Embodiment

[0013] A method for preparing dehydrated masterbatch includes the following steps:

[0014] (1) Mix polyethylene, calcium oxide, dispersant, and stearate according to the proportion to form a mixture;

[0015] (2) The mixture is put into a high and low speed mixer and cooled after stirring. The stirring time is 30 minutes, the cooling time is 5-10 minutes, and the cooling temperature is 20 degrees Celsius;

[0016] (3) Pour the cooled mixture into a twin-screw extruder for wind-blown granulation.

[0017] In step (1), 15 parts of polyethylene, 67 parts of calcium oxide, 15 parts of dispersant, and 3 parts of stearate. The dispersant is polyethylene wax. In step (2), the cooling method is air cooling. In step (3), the processing temperature of zones 1, 2, and 3 of the twin-screw extruder is 100-120 degrees Celsius, and the temperature of zones 4, 5, 6, 7, 8, and 9 of the twin-screw extruder The processing temperature is 120-150 degrees Celsius, and the processing temperature in zones 10, 11, and 12 of the twin-screw extruder is 150-120 degrees Celsius.

[0018] The masterbatch prepared by the invention can absorb the moisture contained in the raw material, which is beneficial to processing, reduces energy consumption, and improves the quality of finished plastics.

PUM

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Reduce energy consumption
Good for processing

Preparation method of dehydrated master batch

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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