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A mixing control method for plastic powder preplasticization

A technology of mixing control and plastic powder is applied in the field of powder pre-plasticization, which can solve the problems of not controlling the temperature rise and affecting the performance of plastic products, and achieve the effect of improving performance.

Active Publication Date: 2021-10-29
LIANSU TECH DEV WUHAN
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AI Technical Summary

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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  • A mixing control method for plastic powder preplasticization
  • A mixing control method for plastic powder preplasticization

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Experimental program
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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 is greater than or equal to the preset value, stop the pre-plasticizing process, and if the difference is less than 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...

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Abstract

The invention provides a mixing control method for plastic powder preplasticization. A mixing control method for plastic powder pre-plasticization, the steps are: S1. a high-speed mixer raises the temperature of the mixed plastic powder; S2. monitors the actual temperature rise slope d of the mixed plastic powder before entering the pre-plasticization temperature range x The difference with the temperature rise slope threshold d', when the difference meets the preset value, enter step S3; S3. The high-speed mixer will continue to heat up the mixed plastic powder to the pre-plasticizing temperature range, and set to maintain the pre-plasticizing temperature The duration of the interval, monitoring the actual pre-plasticizing temperature rise slope d of the mixed plastic powder i , adjust the operating frequency f' of the shear head of the high-speed mixer, so that the actual plasticizing temperature rise slope d in the pre-plasticizing temperature range i It is the same as the allowable value d of the temperature rise slope; S4. Send the pre-plasticized mixed plastic powder to the cold mixing tank for rapid cooling. The invention fully ensures the heat exchange inside the mixed plastic powder, thereby fully pre-plasticizing the mixed plastic powder and improving the performance of plastic products.

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 Patents(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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