Paste agent specially for battery and preparation method thereof

Abstract

The invention relates to a paste agent specially for a battery and a preparation method thereof. The paste agent is prepared by the following materials by weight ratio: modified starch, pure water, urea, sorbierite or propanediol, phospholipids or glycerel monostearte, sodium dehydroacetate or dimethyl fumarate and defoaming agents. The preparation method of the paste agent comprises the following steps of: placing the modified starch and the pure water into a reaction kettle, and heating and stirring till the modified starch is sufficiently dissolved at heating temperature lower than 65 DEG C; adding the sorbierite or the propanediol and the phospholipids or the glycerel monostearte to the reaction kettle by increasing the temperature to 65-70 DEG C, and preserving the temperature for 0.5-1 hour; adding the urea by increasing the temperature to 85-90 DEG C, and preserving the temperature; adding the sodium dehydroacetate or the dimethyl fumarate by reducing the temperature to 55-70 DEG C after the content of soluble solid state materials reaches 72 percent, and then adding the defoaming agents to stir for 0.5-1 hour; and discharging after the temperature is reduced to 40 DEG C so as to obtain the paste agent specially for the battery. The invention has the advantages of low cost, high product strength, good stickiness, difficult desquamation, durable service, safety and environmental protection without pollution and corrosion and is suitable for popularization and application.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a special adhesive for batteries and a preparation method thereof. Background technique [0002] At present, most of the adhesives used in batteries are chemical adhesives with polyvinyl alcohol as the main raw material. Although this type of adhesive has good bonding performance, it still has the following disadvantages: 1. The cost is too high. In the early days, most of the imported adhesives were mainly imported. For example, the imported adhesives in Germany are as high as 31,000 yuan / ton. At present, the market price of similar products in China is not less than 25,000 yuan / ton, and the cost is relatively high; 2. It is corrosive and will corrode the battery. shell. The polyvinyl alcohol adhesive is alkaline, and the battery casing contains zinc, and the two are prone to react, thus having a certain corrosion effect on the battery casing; 3. It pollutes the e...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the adhesives used in batteries are chemical adhesives with polyvinyl alcohol as the main raw material. Although the adhesive performance of this type of adhesive is good, there are still the following disadvantages: 1. The cost is too high

Polyvinyl alcohol-based adhesives are alkaline, and the battery casing contains more zinc, and the two are prone to react, which has a certain corrosion effect on the battery casing; 3. It pollutes the environment and is not environmentally friendly.

Formaldehyde is generally added to the adhesive during the production process, which is harmful to the human body. At the same time, polyvinyl alcohol adhesives are not soluble in water, are not easy to degrade, and will also cause certain pollution to the environment.