Preparation process of foam metal carrier for post-treatment

Abstract

The invention relates to a preparation process of a foam metal carrier for post-treatment, which is characterized in that: blending thermosetting phenolic resin, alcohol, and nanometer graphite to form conductive slurry, soaking and coating foamed plastics, extruding redundant slurry, drying, electroplating the plastics with iron and nickel, after electroplating, performing deficiency sintering with a preserved temperature in a high temperature furnace so as to prepare the foam metal with a certain porosity. Starting with the optimization of the pre-treatment process flow of foamed plastics, the invention shortens the flow, eliminates pollution procedures, has obvious energy saving and environmental protection effect, is stable and controllable, and has very high practical value.

Description

technical field [0001] The invention relates to a preparation process of a metal foam carrier for aftertreatment, which can be applied to the aftertreatment industry of automobile exhaust. Background technique [0002] At present, the world is facing comprehensive challenges of energy and environment. In the selection of technical means to meet the emission standards of traditional vehicles, people still face many difficulties, for example, how to choose the carrier and catalyst for post-treatment. [0003] The post-processing carrier is the key factor to constitute the vehicle after-processing platform. Up to now, most of the post-processing carriers are imported ceramic carriers. Similarly, mature metal carriers are also monopolized by foreign technologies and patents, which has become a key factor restricting the development of China's post-processing industry. Therefore, how to obtain low-cost and high-performance post-processing carriers is the core content of promotin...

AI Technical Summary

Problems solved by technology

[0009] The traditional pretreatment includes degreasing and hydrophilization treatment. The hydrophilization treatment makes the surface of the plastic substrate change from hydrophobic to hydrophilic. The hydrophilization treatment method includes mechanical and chemical methods. A strong oxidizing solution of a mixture of anhydride and sulfuric acid for treatment, which has potential environmental pollution problems; the next step is to use catalytic gold, silver, platinum or palladium and other precious metals for activation treatment process; after activation treatment , start the electroless plating of foamed plastics, so that the metal ions in the plating solution are reduced and deposited on the foamed plastics substrate. After electroless plating, a metal conductive film will be attached to the surface of the foamed plastics. The thickness of the film layer is generally very thin (0.05~0.8 μm), often cannot meet the use requirements of the product in terms of mechanical properties and strength

Therefore, after electroless plating, foam plastic electroplating can be carried out by using the usual electroplating process to deposit iron and nickel metal, increase the thickness of the metal layer, and complete the foam metal preparation. It can be seen that the production process of traditional foam metal is long, Low efficiency, high process cost and potential environmental pollution are the disadvantages of the current chemical pretreatment method