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Method for laboratory verification of dispersibility of soft pvc powder additives based on calcium stearate and soybean oil

A technology of calcium stearate and soybean oil, which is applied in the direction of analyzing materials, instruments, surface/boundary effects, etc., can solve the problem of different plasticization degrees of formula materials, affecting the dispersion performance of powder additives, and incomplete powder plasticization and other issues to achieve the effective effect of the test method

Active Publication Date: 2021-04-13
百尔罗赫新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different powder additives will make the plasticization degree of the formula material different. Some additives themselves have insufficient lubricating effect or insufficient stability, which will cause the formula material to stick to the roll, and some additives will cause the formula to be plasticized. Defective powder plasticization is not complete, which affects the judgment of technicians on the dispersion performance of powder additives
The dispersibility of powder additives obtained by the above method is not accurate and effective enough

Method used

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  • Method for laboratory verification of dispersibility of soft pvc powder additives based on calcium stearate and soybean oil
  • Method for laboratory verification of dispersibility of soft pvc powder additives based on calcium stearate and soybean oil
  • Method for laboratory verification of dispersibility of soft pvc powder additives based on calcium stearate and soybean oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The instruments used in this example include: Plasmec brand turbine mixer (TRL-10 / FV / R); VowerkThermomix TM-31 small mixer; Dr.collin twin-roll mixer, model W 150E*400; Deli NO.8012 cut paper knife.

[0027] The raw materials in this example include: Formosa Plastics PVC powder grade S-70, plasticizer DOTP, soybean oil, calcium stearate (Lianyungang Huamingtai), and powder additive-A, powder additive-B , Powder additive-C, Powder additive-D.

[0028] In the present embodiment, the method for verifying the dispersibility of the soft PVC powder additive comprises the following steps:

[0029] (1) Preparation of premix

[0030] Accurately weigh 2kg of PVC powder S-70 and 800g of liquid plasticizer DOTP respectively. Put it into a high mixer and mix at 600r / min for 10 minutes to prepare premix S-13.

[0031] (2) Prepare powder additives and directly mix samples

[0032] Select powder additive samples A, B, C, D. Weigh 3g of powder additives respectively, put them into...

Embodiment 2

[0058] Feedback on customer application of powder additives in Table 6 Example 2

[0059]

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Abstract

The invention belongs to the technical field of polymer materials and discloses a method for laboratory verification of the dispersibility of soft PVC powder additives based on calcium stearate and soybean oil. The method is under the same processing conditions, calcium stearate and soybean oil are applied to the method for verifying the dispersibility of soft PVC powder additives in the laboratory, utilizing the plasticizing and lubricating effects of soybean oil and calcium stearate, Observe whether there is uneven dispersion of different powder additives in the formula under the condition of ensuring good plasticization of the formula, effectively avoiding the occurrence of the above situation, and improving the dispersion of laboratory personnel in testing PVC soft powder additives The effectiveness of performance has realized the effective control of different powder additives in the laboratory.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a technical application of applying calcium stearate and soybean oil to a method for verifying the mixing and dispersing properties of PVC powder additives in a laboratory. Background technique [0002] When different powder additives are applied to soft PVC formulations, uneven powder mixing and dispersion may occur in the granulation process, resulting in materials blocking the filter screen or powder clumping in finished products, which will cause large-scale production. Big loss. The existing laboratory method for verifying the dispersibility of soft PVC powder additives is to add different powder additives into the simple laboratory soft PVC formula, mix them with a double-roller mill, remove them, and observe the Powder dispersion. However, different powder additives will make the plasticization degree of the formula material different. Some additives themselves h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
Inventor 徐波邓楠山陈金河
Owner 百尔罗赫新材料科技有限公司
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