Water-based glue hardener and preparation method thereof

Abstract

The invention discloses a water-based glue hardener and a preparation method thereof, and relates to the field of water-based glue. The water-based glue hardener comprises, in percentage by mass, 8%-18% of sulfur, 12%-20% of accelerator, 5%-6% of wetting and dispersing agent, 4%-6% of thickener, 60%-70% of deionized water, 1.1%-2% of defoamer, and 0.61% of bactericide, wherein the wetting and dispersing agent includes polyimide, a solvation chain and an anchoring group, and the anchoring group is formed by grafting the solvation chain to polyimide and then conducting reacting with a phosphateor an acid anhydride. The water-based glue hardener provided by the invention contains the wetting and dispersing agent containing polyimide, the solvation chain and the anchoring group, so that the hardener can be preserved for a long time without agglomeration. The wetting and dispersing agent used in the invention is a high-molecular-weight wetting and dispersing agent having a symmetrical polyimide skeleton, containing various anchoring groups and belonging to a mixed type, and the anchoring group makes the wetting and dispersing agent not only have excellent wettability but also have extremely good adsorption property, an oleophilic end has stable adhesion with sulfur and the surface of the dispersing agent, and thus the aqueous glue hardener is guaranteed to be stored for a long time.

Description

technical field [0001] The invention relates to the field of water-based glue, in particular to a water-based glue hardener and a preparation method thereof. Background technique [0002] With the gradual promotion and acceptance of the concept of environmental protection and green manufacturing, as well as the strong guidance of national policies, the glue used for vulcanized shoes has been gradually changed to an all-water-based glue system. At present, the water-based adhesives for vulcanized shoes on the market are basically natural latex. They need to be used with sulfur and accelerators to produce cross-linking reactions and achieve the required cohesion, heat resistance, and weather resistance. [0003] However, sulfur and vulcanization accelerators are powder materials with large specific surface area and high surface energy, which are easy to agglomerate together, insoluble in water, and have a higher density than water, so these powders cannot be directly used in n...

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Problems solved by technology

[0004] However, after the above-mentioned grinding of sulfur and accelerators, the particle size is only 1-10 μm, the specific surface area is large, and it is very easy to reunite

In order to prevent the agglomeration of sulfur and accelerator powders, the current technology is to add common wetting and dispersing agents, but due to the unstable adhesion between the lipophilic end of the wetting and dispersing agents and the powder surface of sulfur and dispersing agents, when just producing The effect is acceptable, but after a period of time at room temperature, the wetting agent tends to separate from the powder surface gradually, causing the powder to reunite and settle again, resulting in poor storage stability of the hardener, and stratification is prone to occur when stored at room temperature for more than 6 days. The stability is not good, generally it can only be stored for about 1 week, and it must be stirred evenly before use

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