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Preparation method of sodium aluminum silicate plastic film opening agent

A technology of plastic film and sodium aluminum silicate, which is applied in the direction of silicate and alkali metal silicate, can solve the problem of high price, and achieve the effect of low price, low overall cost and simple steps

Active Publication Date: 2015-10-14
冷水江三Ａ新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defect that the synthetic anti-blocking agent is expensive at present, using industrial sodium silicate and aluminum sulfate as raw materials, the sodium aluminum silicate plastic film anti-blocking agent is prepared by gel method

Method used

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  • Preparation method of sodium aluminum silicate plastic film opening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of raw material aqueous solution: dilute industrial sodium silicate with water to obtain 500 g of sodium silicate aqueous solution with a silicon dioxide content of 10 wt%, and dissolve industrial aluminum sulfate with water to obtain 50 g of aluminum sulfate aqueous solution with an alumina content of 10 wt%.

[0021] Add sodium silicate into the reaction kettle, start stirring, raise the temperature to 50°C, add aluminum sulfate aqueous solution dropwise at a rate of 10ml / min until the pH is 8-10; raise the temperature to 80°C, and keep it warm for 60 minutes; wash the slurry with water, wash with water To a conductivity of 900μs / cm; add the filter cake to a high-speed disperser, disperse at 2500 rpm for 20 minutes, and add 5.5g of sodium dodecylbenzenesulfonate at the same time; then dry the material; use a jet mill for pulverization , crushed to an average particle size of 4.5 μm.

Embodiment 2

[0023] Preparation of raw material aqueous solution: dilute industrial sodium silicate with water to obtain 500 g of sodium silicate aqueous solution with a silicon dioxide content of 15 wt%, and dissolve industrial aluminum sulfate with water to obtain 50 g of aluminum sulfate aqueous solution with an alumina content of 15 wt%.

[0024] Add sodium silicate to the reaction kettle, start stirring, and raise the temperature to 40°C; add aluminum sulfate aqueous solution dropwise at a rate of 5ml / min until the pH is 8-10, raise the temperature to 80°C, and keep it warm for 40 minutes; wash the slurry with water, to a conductivity of 950 μs / cm; add the filter cake to a high-speed disperser, disperse at 2500 rpm for 20 minutes, and add 8.25 g of glyceryl monostearate at the same time; then dry the material; to an average particle size of 5 μm.

Embodiment 3

[0026] Preparation of raw material aqueous solution: dilute industrial sodium silicate with water to obtain 500 g of sodium silicate aqueous solution with a silicon dioxide content of 15 wt%, and dissolve industrial aluminum sulfate with water to obtain 75 g of aluminum sulfate aqueous solution with an alumina content of 10 wt%.

[0027] Add sodium silicate to the reaction kettle, start stirring, and raise the temperature to 40°C; add aluminum sulfate aqueous solution dropwise at a rate of 8ml / min until the pH is 8-10, raise the temperature to 90°C, and keep it warm for 40 minutes; wash the slurry with water until The conductivity is 920 μs / cm; the filter cake is added to a high-speed disperser, and dispersed for 20 minutes at 2500 rpm, and 8.25 g of glyceryl monostearate and 8.25 g of sodium dodecylbenzenesulfonate are added at the same time; Drying; crushing with a jet mill until the average particle size is 4.2 μm.

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Abstract

The invention discloses a preparation method of a plastic film anti-blocking agent prepared by sodium alumino silicate. According to the preparation method, industrial sodium silicate and aluminum sulfate are adopted as raw materials, and the plastic film anti-blocking agent prepared by sodium alumino silicate is prepared with a sol-gel method. The preparation method has simple steps and higher production efficiency, the total cost of a product is lower than an anti-blocking agent prepared by silicon dioxide, and the product not only has good performance of the anti-blocking agent prepared by silicon dioxide, but also has the advantage of low price of a natural anti-blocking agent.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a preparation method of a plastic film opening agent. technical background [0002] With the improvement of people's material level, the use of plastic packaging is increasing year by year. In the production process of plastic film, due to the existence of surface tension when the plastic film without anti-blocking agent is piled up and wound, when it is pressed or heated, it is easy to make the film stick together and not easy to separate, thus affecting the film. use. The addition of the anti-blocking agent can not only form a concave-convex surface on the surface of the film, thereby reducing the contact area between the films, reducing the friction coefficient of the film, but also hindering the penetration of macromolecular chains to prevent the adhesion of the film. [0003] At present, the improvement of the opening properties of plastic films is mainly based on adding a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/32
Inventor 胡湘仲胡伟民胡利民
Owner 冷水江三Ａ新材料科技有限公司