Mixing control method for pre-plasticizing of plastic powder

A technology of mixing control and plastic powder, applied in the field of powder pre-plasticization, can solve the problems of no temperature rise control, affecting the performance of plastic products, etc., and achieve the effect of improving performance

Active Publication Date: 2020-04-21
LIANSU TECH DEV WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing plastic powder pre-plasticization process without temperature rise control, which affects the performance of plastic products, and to provide a mixing control method for plastic powder pre-plasticization

Method used

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  • Mixing control method for pre-plasticizing of plastic powder
  • Mixing control method for pre-plasticizing of plastic powder

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Embodiment 1

[0020] Such as Figure 1 to Figure 2 Shown is an embodiment of a mixing control method for plastic powder pre-plasticization in the present invention. A mixing control method for plastic powder pre-plasticization, comprising the following steps:

[0021] S1. The high-speed mixer heats up the mixed plastic powder;

[0022] S2. Monitor the actual temperature rise slope d of the mixed plastic powder before entering the pre-plasticizing temperature range x The difference with the temperature rise slope threshold d', if the difference does not meet the preset value, stop the pre-plasticization process, and if the difference meets the preset value, enter step S3;

[0023] S3. The high-speed mixer continuously raises the temperature of the mixed plastic powder to the pre-plasticizing temperature range, and sets the duration of maintaining the pre-plasticizing temperature range, and monitors the actual pre-plasticizing temperature rise slope d of the mixed plastic powder i , adjust...

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PUM

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Abstract

The invention provides a mixing control method for pre-plasticizing of plastic powder. The mixing control method for pre-plasticizing of the plastic powder comprises the following steps that S1, the mixed plastic powder is heated by a high-speed mixer; S2, the difference value between the actual temperature rise ramp dx and the temperature rise ramp threshold value D' before the mixed plastic powder enters the pre-plasticizing temperature interval is monitored, and the step S3 is entered when the difference value meets a preset value; S3, the high-speed mixer continuously heats the mixed plastic powder to the pre-plasticizing temperature interval and sets the duration time for maintaining the pre-plasticizing temperature interval, the actual pre-plasticizing temperature rise ramp di of themixed plastic powder is monitored, and the running frequency f' of a shearing cutter head of the high-speed mixer is regulated, so that the actual plasticizing temperature rise ramp di in the pre-plasticizing temperature interval is the same as the temperature rise ramp allowable value d; and S4, the pre-plasticized mixed plastic powder is fed into a cold mixing cylinder for rapid cooling. According to the mixing control method, heat exchange inside the mixed plastic powder is fully guaranteed, so that the mixed plastic powder is fully pre-plasticized, and the performance of plastic productsis improved.

Description

technical field [0001] The invention relates to the technical field of powder pre-plasticization, and more particularly, to a mixing control method for plastic powder pre-plasticization. Background technique [0002] The existing plastic powder mixing equipment does not pay much attention to the pre-plasticization process of the mixed plastic powder. As long as the mixing time is sufficient, the mixed plastic powder is qualified. If the material and equipment are unstable, the mixed plastic powder If the temperature of the material is too low or the pre-plasticization time is not sufficient, the mixed plastic powder cannot be pre-plasticized well. Layers, etc., seriously affect the performance of plastic products. If the temperature rise of the mixed material is too fast, the resulting excessive consumption or denaturation of the stabilizer will also seriously affect the extrusion or injection molding quality of the product. Contents of the invention [0003] The purpose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/82
CPCB29B7/823
Inventor 冼伟发何冠峰黄云志孙秀慧李弟邵世雄
Owner LIANSU TECH DEV WUHAN
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