Elastic peelable glue and method for carrying out local electroplating protection by using same

Abstract

The invention discloses elastic peelable glue and a method for carrying out local electroplating protection by using the same. The elastic peelable glue comprises the following components in parts by weight: 15-50 parts of styrene thermoplastic elastomer, 20-60 parts of mineral oil, 10-30 parts of tackifying resin and 0-2 parts of antioxidant. The method for carrying out the local electroplating protection by using the elastic peelable glue comprises the following steps of: putting the elastic peelable glue into a heating container with controllable temperature, wherein the elastic peelable glue can be used after being heated and melted, and temperature is controlled to be between 140 DEG C and 180 DEG C; dipping a workpiece to be electroplated into the melted protection glue; after the workpiece is completely dipped, taking the workpiece out and putting into cold water for cooling for 5-15 minutes; and then carrying out a subsequent electroplating working procedure. The elastic peelable glue has the advantages of environmental protection, easy peeling and recycling, and the method has simple operation and easy control and can improve the production efficiency and reduce the production cost.

Description

technical field [0001] The invention relates to the field of electroplating, in particular to an elastic peelable glue and a method for partial electroplating protection thereof. Background technique [0002] In the metal electroplating process, sometimes due to some special reasons such as the requirements of dimensional tolerances, local hardness, wear resistance, local conductivity, and the cost of electroplating precious metals, etc., it is not necessary to electroplate the entire surface. Local protection is required to achieve electroplating on the surface that needs electroplating, and protect the surface that does not need electroplating. [0003] The existing processing methods are as follows: [0004] 1. Encapsulation method: This method uses plastic film strips, tapes, plastic tubes, rubber stoppers and other insulating materials to wrap and block the non-plating parts. This method is simple and convenient, but the disadvantage is that it is not easy to wrap the...

AI Technical Summary

Problems solved by technology

This method is simple and convenient, but the disadvantage is that it is not easy to wrap the workpiece with complex shape, it is difficult to clean the residual solution in the gap, and it is easy to cause mutual pollution between the solutions. Few people use this method

[0005] 2. Coating insulation method: This method is currently used more frequently. This method is easy to operate and is suitable for the insulation of complex workpieces. However, this method has the following disadvantages: 1) A large amount of solvents (toluene, xylene, etc.) are used Pollution of the environment; 2) endangering the health of operators; 3) due to the use of a large amount of solvents, the production site needs to be fire-proof and explosion-proof, and ventilation must be strengthened, the equipment investment is large, and the maintenance cost is high; 4) this coating method needs to be coated with 2-10 layers In order to meet the requirements, the coating time of each layer needs to be separated by 30-60 minutes. To be resistant to acid and alkali, it must be dried at high temperature. The production cycle is long and the production efficiency is low; 5) The edge protection is not good, the part is easily damaged, and the peeling is not clean After electroplating, it takes a lot of time and manual follow-up processing; 6) Most of these coatings can only be used once, even if some products can be recycled, a large amount of solvent must be added to reuse, and the number of reuses is at most 1-2 Second-rate

[0006] 3. Copy fixture method: This method is suitable for the situation where more than two kinds of coatings are required and the shape is simple and the volume is relatively small, which can improve production efficiency. However, the equipment investment cost of this method is relatively high, and the workpiece with complex shape and large volume is not suitable. The protection effect is not good, and few people use this method