Treatment method of aluminum sliver powder

Abstract

The invention discloses a treatment method of aluminum sliver powder. The treatment method comprises the following steps: weighing 20-30 parts of 1,6-hexanediol diglycidyl ether, 30-50 parts of E-51 epoxy resin and 3-5 parts of BYK-P104S, putting the components into a 2L double-planet power mixing kettle, adding 5-10 parts of a silane coupling agent KH-550, mixing and stirring for 10 minutes, adding 40-50 parts of non-floating type aluminum sliver powder, and mixing and stirring for 20 minutes; still-standing for 2 hours, mixing and stirring for 30 minutes to obtain a mixture, taking out the mixture, putting the mixture into a sealed container, and still-standing the sealed container for 24 hours to obtain the aluminum sliver powder paste.

Description

technical field [0001] The invention relates to a processing method for aluminum silver powder, which belongs to the field of synthetic chemistry. Background technique [0002] General epoxy repair adhesive cured products are brittle, with low impact resistance and poor aging resistance; aluminum repair adhesives with better impact resistance are mostly modified with acrylic acid, polyurethane and carboxyl-terminated liquid nitrile rubber, etc. Epoxy resin, but these modification methods improve the impact resistance of aluminum epoxy repair glue, but at the same time greatly reduce the glass transition temperature of the cured product; at the same time, because the modified product is mostly elastomer rubber, it has a large The viscoelasticity and viscous force of the resin greatly increase the viscosity of the resin, and it is difficult to fill a large amount of metal aluminum powder, so that the properties of the cured repair adhesive and the base material of the aluminum...

AI Technical Summary

Problems solved by technology

[0002] General epoxy repair adhesive cured products are brittle, with low impact resistance and poor aging resistance; aluminum repair adhesives with better impact resistance are mostly modified with acrylic acid, polyurethane and carboxyl-terminated liquid nitrile rubber, etc. Epoxy resin, but these modification methods improve the impact resistance of aluminum epoxy repair glue, but at the same time greatly reduce the glass transition temperature of the cured product; at the same time, because the modified product is mostly elastomer rubber, it has a large The viscoelasticity and viscous force of the resin greatly increase the viscosity of the resin, and it is difficult to fill a large amount of metal aluminum powder, so that the properties of the cured repair adhesive and the base material of the aluminum parts are quite different, and the processing performance is reduced; It flows when the temperature is high and becomes hard when the temperature is low, which makes the construction performance of the aluminum repair adhesive worse. It flows and draws during operation, and the heat release during curing makes the adhesive layer difficult to form. It is even more difficult to maintain the accurate molding size after curing.