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Preparation method of plastic masterbatch heavy calcium functional filler for film

A technology of functional filler and heavy calcium, applied in the field of surface treatment of heavy calcium inorganic powder, can solve the problems of poor dispersion of heavy calcium carbonate, the strength and toughness of modified film cannot meet the requirements, etc., to achieve good compatibility, improve The effect of improving processability, physical and mechanical properties, and compatibility

Inactive Publication Date: 2019-03-29
HUNAN LEIXIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Ground calcium carbonate has the characteristics of wide sources, low cost, and good safety. However, the dispersion of ground calcium carbonate in the carrier resin is poor, and the strength and toughness of the obtained modified film still cannot meet the requirements.

Method used

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  • Preparation method of plastic masterbatch heavy calcium functional filler for film

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Comparison scheme
Effect test

Embodiment 1

[0022] The plastic masterbatch heavy calcium functional filler for film is mainly prepared from the following raw materials in weight percentage: 350 mesh heavy calcium powder 66%, polypropylene acetic acid dispersant 3%, modifier 3%, stearic acid 1%, Water 27%.

[0023] The above-mentioned modifier is composed of aluminate, titanate and colloidal modifier XI-101 in a weight ratio of 8:7:15.

[0024] The preparation method comprises the steps of:

[0025] (1) Wet grinding: Take heavy calcium powder, water, and polypropylene acetic acid dispersant according to the proportion of the formula and put them into the dispersion mixing tank. After fully dispersing for 30 minutes, use a diaphragm pump to input a 5600-liter wet grinding machine into wet grinding. The medium control temperature is 50°C, the flow rate is 3.5T / n, and the frequency is 1000 rpm;

[0026] (2) Dispersion and primary modification: the liquid slurry obtained through step (1) has a mass fraction of 60% of the p...

Embodiment 2

[0030] The plastic masterbatch heavy calcium functional filler for film is mainly prepared from the following raw materials in weight percentage: 59.7% of 300 mesh heavy calcium powder, 2% of polypropylene acetic acid dispersant, 1% of modifier, 0.3% of stearic acid, Water 37%.

[0031] The above-mentioned modifier is composed of aluminate, titanate and colloidal modifier XI-101 in a weight ratio of 8:7:15.

[0032] The preparation method comprises the steps of:

[0033] (1) Wet grinding: Take heavy calcium powder, water, and polypropylene acetic acid dispersant according to the proportion of the formula and put them into the dispersion mixing tank. After fully dispersing for 25 minutes, use a diaphragm pump to input a 5600-liter wet grinding machine into wet grinding. The medium control temperature is 55°C, the flow rate is 3T / n, and the frequency is 800 rpm;

[0034] (2) Dispersion and primary modification: pump the liquid slurry obtained after the treatment in step (1) af...

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Abstract

The invention discloses a preparation method of a plastic masterbatch heavy calcium functional filler for a film. The filler is mainly prepared from the following raw materials in percent by weight: 57-70% of heavy calcium raw powder, 2-3% of dispersing agent, 1-3% of modifying agent, 0.3-1% of stearic acid and 27-37% of water. Activation and modification are completed in two steps: in the first step, inorganic particles are converted into organic particles, so that calcium carbonate has hydrophilic and lipophilic dual-polarity functions and has good compatibility with resin; and in the secondstep, the oil absorption value and the dispersive external lubrication degree of the calcium carbonate functional filler are lowered, so that the particles are suspended and dispersed in the resin, the compatibility with the carrier resin and the suspension and dispersion requirements are met, the surface traction of the filler is similar to that of the resin, and the filler has multi-functionalpolarities such as lipophilicity.

Description

technical field [0001] The invention relates to a plastic masterbatch heavy calcium functional filler for films and a preparation method thereof, belonging to the technical field of heavy calcium inorganic powder surface treatment. Background technique [0002] The R&D and application technology of surface-treated secondary products of heavy calcium inorganic powder was widely used by Japan, the United States, Germany and other western developed countries as early as the early 1970s, and monopolized the global market and price, while the domestic R&D and application only started in the early 1980s . At present, domestic non-metal processing enterprises have made great progress in ultra-fine heavy calcium grinding and processing. Both processing technology and processing equipment are close to the advanced level of industrialized countries, and the surface treatment technology of heavy calcium inorganic powder is also in-depth research and development. How to use the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K9/04C08K3/26C08J3/22C08J5/18
CPCC08J3/22C08J5/18C08K3/26C08K9/04C08K9/10C08K2003/265
Inventor 李刚周俊蒋冬华罗兴华
Owner HUNAN LEIXIN NEW MATERIAL TECH
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