A kind of thermosetting resin adhesive for production of stainless steel-aluminum alloy composite coil and its application

Abstract

The invention provides a thermosetting resin glue for the production of stainless steel-aluminum alloy composite plate coils, which is mixed with resin solution P425 and resin solution PCA118 at a mass ratio of 100:10.8-11.5, and then diluted with a diluting solvent to make a thermosetting resin glue liquid, the diluting solvent adopts an organic solvent that has good solubility to the glue and does not react with the glue, and the total mass of the thermosetting resin glue is 100%, and the amount of the diluting solvent is 2 to 6%, and The application method of the thermosetting resin glue and the product obtained after the application, the stainless steel-aluminum alloy composite plate coil obtained after the application has excellent bonding strength.

Description

technical field [0001] The invention relates to the field of adhesives and the field of composite material production and manufacturing, in particular to a thermosetting resin glue for production of stainless steel-aluminum alloy composite coils and its application. Background technique [0002] With the development and progress of the social economy, there is a huge demand for various types of metal sheets in architectural decoration, light manufacturing and other industries, but a single type of metal sheet is often due to the inherent characteristics of the metal (such as corrosion resistance, gloss, etc.) Contradictions limit its application. In this context, composite materials can be derived from bimetallic layered composite materials with both performance, appearance, function, and economy due to different component selection and composite manufacturing methods, meeting the needs of saving precious metals. At the same time, it also meets the characteristic requiremen...

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Problems solved by technology

[0003] There are many layered metal cladding technologies, but they mainly adopt explosive cladding, rolling cladding and bonding. The first two production technologies not only have huge investment scale, but also have long process flow, and some metal cladding will also be technically difficult. are limited, therefore, the bonding technique is the most widely used

[0004] At present, the production of bimetallic composite coils is mostly made of continuous lamination of thermoplastic adhesive materials. Composite panels between the same metals have been developed and applied in the market. The thermal melting temperature of the bonding material layer) is low, and the wettability with the metal plate is not good. The composite curing temperature, pressure and time are strictly required, and there are obvious limitations: one is only used for the same kind of metal plate or the thermal conductivity is similar. The lamination and compounding between metal sheets, the second is that the 180° linear peel strength between the composite layers is not high, generally <25N / 25mm

In order to obtain higher bonding strength, some people use metal structural adhesive as the bonding material. Although the metal structural adhesive has a high viscosity, its sizing operation time is short and the curing time is long. It can only achieve bonding between metal plates of a certain size. Bonding and compounding, it is impossible to achieve large-area continuous bonding of metal materials, and it cannot be used to produce composite coils, and it is prone to defects such as unevenness after thin-layer metal compounding, corrosion under the composite layer, etc.

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