Preparation method of silicon-aluminum film opening agent and film opening agent

A technology of opening agent and thin film, which is applied in the field of polymer material processing, can solve the problems of low affinity, affecting opening performance, and difficult dispersion, so as to improve affinity, reduce friction coefficient and adhesion resistance, and improve antistatic Effect

Inactive Publication Date: 2020-12-29
广州凌玮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not post-treat the silica, and the affinity between the silica particles and the organic polymer is low, and it is not easy to disperse in the polymer, thereby affecting its opening performance.

Method used

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  • Preparation method of silicon-aluminum film opening agent and film opening agent
  • Preparation method of silicon-aluminum film opening agent and film opening agent
  • Preparation method of silicon-aluminum film opening agent and film opening agent

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preparation example Construction

[0040] The invention provides a kind of preparation method of silicon-aluminum film opening agent, it comprises the steps:

[0041] S1: Prepare a water glass solution with a silicon dioxide concentration of 10-20wt% and a modulus of 3.35 for use;

[0042] S2: Add water and aluminum salt into the reaction kettle at a temperature of 30°C-60°C, and after the aluminum salt is completely dissolved, add sulfuric acid with a concentration of 10-30wt%, and adjust the pH value to 1-3;

[0043] S3: Add the prepared water glass solution and sulfuric acid to the aluminum salt solution at the same time, and the co-flow time is 30min-60min, keeping the pH value of the system at 1-3;

[0044] S4: After the parallel flow is completed, add sodium hydroxide to adjust the pH value to 8-10, and at the same time raise the temperature to 80°C-100°C, and keep aging at this temperature for 2 hours;

[0045] S5: After the aging is completed, add dilute sulfuric acid, adjust the pH value to 2-4, age f...

Embodiment 1

[0052] At a temperature of 30°C, inject 50L of bottom water and 45 moles of aluminum sulfate into the stirred reaction vessel. After the aluminum sulfate is completely dissolved, add sulfuric acid with a concentration of 30wt% to adjust the pH of the system to 2, and add a concentration of 20wt. % water glass 75L and the sulfuric acid of 30wt%, the maintenance system pH value is 2 and the parallel flow time is 30 minutes.

[0053] After the parallel flow is completed, the temperature is adjusted to 90°C, the pH value is adjusted to 9 by adding sodium hydroxide, and aged for 2 hours. After aging, sulfuric acid was added to adjust the pH value to 3, aged for 0.5 hour, then cooled to 60° C., and filtered to obtain a filter cake. Wash the filter cake with 1wt% sulfuric acid, then mix and wash with tap water and pure water, and press filter to form a filter cake. Re-disperse the filter cake in a small amount of water, and add 3% solid content organic silane dispersant KH550. Afte...

Embodiment 2

[0058] At a temperature of 60°C, inject 50L of bottom water and 15 moles of aluminum nitrate into the stirred reaction vessel. After the aluminum nitrate is completely dissolved, add sulfuric acid with a concentration of 10wt% to adjust the pH value of the system to 2, and add a concentration of 20wt. % water glass 75L and 10wt% sulfuric acid, keep the pH value of the system at 2 and the co-current time is 90 minutes.

[0059] After the co-current flow is completed, the temperature is adjusted to 100°C, the pH value is adjusted to 10 by adding sodium hydroxide, and aged for 2 hours. After aging, sulfuric acid was added to adjust the pH value to 2, aged for 1.5 hours, then cooled to 60° C., and filtered to obtain a filter cake. Wash the filter cake with 3wt% sulfuric acid, then mix and wash with tap water and pure water, and press filter to form a filter cake. Re-disperse the filter cake in a small amount of water, and add 1% solid content organic silane dispersant KH550. Aft...

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Abstract

The invention discloses a preparation method of a silicon-aluminum film opening agent. The preparation method comprises the following steps: S1, preparing porous silicon-aluminum oxide by utilizing water glass and an aluminum salt solution; S2, adding dilute sulfuric acid into the porous silicon-aluminum oxide, adjusting the pH value, and conducting aging, cooling and filtering to obtain a filtercake; S3, washing the filter cake with dilute sulfuric acid and water in sequence, re-dispersing the washed filter cake in water, adding an organosilane dispersing agent, and conducting uniform dispersing to obtain slurry; and S4, carrying out spray drying on the slurry, and carrying out jet milling to obtain the silicon-aluminum film opening agent. According to the preparation method of the silicon-aluminum film opening agent, the silicon-aluminum film opening agent product with good smoothness, fluidity, dispersity and filterability is obtained, and the silicon-aluminum film opening agent product has good processing performance in plastic film production.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a preparation method of a silicon-aluminum film opening agent and the film opening agent. Background technique [0002] With the development of the national economy, the demand for plastic films is growing rapidly in daily life and industrial production. In the production and storage process of plastic film, after the film is formed, there are a large number of exposed molecular chains on the surface. After the two films are closed, the macromolecular chains are intertwined and adhered to each other. Films are prone to blocking. In the subsequent production and use process, the unwinding speed of the plastic film will be affected at least, and the plastic film will not be able to be unrolled at the worst, which will bring difficulties to the application of automatic packaging. In order to solve this problem, usually in the production process of plastic film,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K7/26C08L23/12C08J5/18
CPCC08K9/06C08K7/26C08J5/18C08J2323/12C08K2201/003
Inventor 胡颖妮
Owner 广州凌玮科技股份有限公司
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