Micron nano material composite modified water-based adhesive

A water-based adhesive and nano-modifier technology, applied in the direction of monocarboxylic acid ester copolymer adhesive, adhesive type, hydrocarbon copolymer adhesive, etc., can solve the problem of little improvement and limited effect, etc. question

Inactive Publication Date: 2008-07-02
郑旷宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improvement in water-based emulsion adhesives is not large. The use of tackifiers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The preparation method of the present invention is as follows: take a certain amount of emulsion and micron-sized powder and mix them fully, and then use them; take a certain amount of nano-sized powder and place them in a certain amount of water, and use ultrasonic waves to fully disperse them until they are transparent, and become Nano-modifier dispersion; then take a certain amount of dispersed nano-modifier dispersion and add it to the mixture of micron-sized powder and emulsion, stir thoroughly, and finally obtain the micron-nano modified water-based adhesive.

[0015] The adhesive matrix is ​​selected from at least one emulsion that can be used as an adhesive, preferably polyvinyl acetate emulsion, polyurethane emulsion, polyvinyl acetate-vinyl emulsion and acrylic emulsion.

[0016] Micron-sized inorganic powder modifiers are preferably calcium carbonate powder, quartz powder, talc powder, mica powder, silicon carbide powder and corundum powder.

[0017] The pref...

Embodiment 1

[0021] Embodiment 1: prepare the water-based adhesive modified by talcum powder and nano-calcium carbonate

[0022] Weigh 83.18g of polyvinyl acetate emulsion and 18.01g of talcum powder with a balance, stir well, and set aside. Take 12.4g of a dispersion liquid containing 5% of nano-barium sulfate powder and add it into the mixture of emulsion and talcum powder, and stir thoroughly to obtain a water-based adhesive modified by talc powder and nano-barium sulfate with excellent performance.

[0023] The preparation method of nano-barium sulfate aqueous dispersion is as follows: the nano-barium sulfate powder and water are oscillated and dispersed under the action of 28KHz ultrasonic waves in a container at a mass ratio of 5:95, and prepared into a uniform transparent or Translucent dispersion.

Embodiment 2

[0025] Weigh 80.33g of acrylic acid emulsion and 23.72g of calcium carbonate micropowder with a balance, stir well, and set aside. Take 15g of a dispersion liquid containing 6% of nano-silica powder and add it to the mixture of acrylic acid emulsion and calcium carbonate micropowder, and stir thoroughly to obtain a water-based adhesive modified by micron and nanometer powders with good performance.

[0026] The preparation method of the nano-silica aqueous dispersion is as follows: the nano-silica powder and water are oscillated and dispersed under the action of ultrasonic waves in a container at a ratio of 6:94 by mass, and prepared into a uniform transparent dispersion after 30-60 minutes. or translucent dispersions.

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PUM

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Abstract

The invention relates to an aqueous binder which is compounded and modified by micro nano material. The modified aqueous binder of the invention adopts emulsion adhesive as matrix and micro-size and nano-size inorganic powder as modifier to prepare the compound and modified aqueous binder. The method of the invention can not only enhance the interface binding force of the aqueous binder, but also greatly improve the properties of water resistance, toughness and extensibility, leading comprehensive performance of the aqueous binder to be improved.

Description

technical field [0001] The invention relates to a water-based adhesive containing micron and nanometer materials, belonging to the technical field of adhesives. Background technique [0002] At present, water-based emulsion adhesives are generally synthesized by emulsion polymerization using acrylate, vinyl acetate, etc. as main raw materials under appropriate polymerization conditions. Since no or only a small amount of organic solvent is contained, the pollution of organic solvent is reduced. However, there are still many shortcomings in the water-based emulsion adhesive, such as slow drying speed, poor water resistance, especially the bonding strength of the emulsion adhesive has been difficult to significantly improve. [0003] In recent years, some progress has been made in the modification of solvent-based adhesives with nano-fillers. The addition of nano-fillers has greatly improved the interfacial bonding strength, stability, wear resistance and water resistance of ...

Claims

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Application Information

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IPC IPC(8): C09J9/00C09J131/04C09J133/00C09J175/04C09J125/14C09J163/00C09J11/04
Inventor 郑天亮王月红郑旷宇
Owner 郑旷宇
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