Preparation method of absorbent for laser transmission welding of light-transmitting plastic

Abstract

The invention discloses a preparation method of an absorbent for laser transmission welding of light-transmitting plastic. Black light-absorbing plastic particles and a plastic dissolving agent corresponding to the black light-absorbing plastic particles are included; the plastic dissolving agent is used for dissolving the black light-absorbing plastic particles, the mixture is stirred to form sticky plastic dissolving liquid, namely the absorbent, and finally the prepared absorbent is sealed and stored in a dissolving container; the volume ratio of the plastic dissolving agent to the black light-absorbing plastic particles is 1:(0.8-1.2); the black light-absorbing plastic particles contain substances capable of absorbing lasers. The absorbent which is high in welding quality, high in universality, easy to obtain and high in cost performance is provided for laser welding of the light-transmitting+light-transmitting plastic, and the problems concerning laser welding of the light-transmitting+light-transmitting plastic can be solved in a high-quality and high-efficiency mode. The absorbent has the advantages of being high in welding quality, high in universality, easy to obtain, high in cost performance and high in adaptability.

Description

technical field [0001] The invention relates to an absorber, in particular to a preparation method of the absorber used for laser transmission welding of light-transmitting plastics. Background technique [0002] With the development of industrial economy, the requirements for the lightweight of products are getting higher and higher. Plastics are widely used in industrial production, and their usage has even exceeded that of steel. Plastic welding technology is an important forming method in the production process. Laser transmission welding is an environmentally friendly, flexible, high-efficiency, and high-quality plastic welding method. This technology has produced good market benefits in developed countries and is widely used Used in automotive, medical, electronics, aerospace and other fields. However, from the basic distance of laser transmission welding, the two materials to be welded need to meet the conditions that one material is transparent and the other materia...

AI Technical Summary

Problems solved by technology

The first two methods have special requirements for welding equipment, and their versatility is not strong, while the third method is the mainstream method to solve the laser welding of light-transmitting + light-transmitting plastics, but the existing laser absorbers have low versatility and difficulty Implementation, poor quality, low efficiency, etc.