Great changes have taken place in coating technology in recent ten years, and the use of additives has become more and more common. Although the proportion of additives in coatings does not exceed 5%, they play various important roles.

There are curing agents that can accelerate drying and enhance gloss, retarders that can slow drying, and matting agents that can weaken gloss. Some additives have comprehensive functions: reducing wrinkling, accelerating drying, preventing whitening and improving chemical resistance.

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Remember those three Zhejiang "post-90s" who participated in the World Skills Competition in Brazil? Today, these three boys came back from Brazil. Yang Jinlong of Hangzhou Technician College won the gold medal in the automobile painting project, which is the first time that Hangzhou players won the gold medal in the World Skills Competition.

In this competition, 32 athletes from China delegation participated in 29 events such as CNC car, welding and hairdressing, and * * * won the gold medals in manufacturing group, welding, hairdressing and car painting, achieving a historic breakthrough.

As a new army that entered the competition for the third time, in the previous two competitions, the China delegation won the winning prize of 2 silver and 3 bronze, 18.

The head of the coaching staff of China Team is Mr. Liang from the Automobile Plastic Painting Department of Hangzhou Technician College. He said that overall, there is still a big gap between China and developed countries in terms of vocational skills, and practitioners are far less standardized in operation than their counterparts in developed countries.

The reason can be traced back to the tradition of "master with apprentice" in China, which leads to the lack of theoretical basis for skilled workers to apply theoretical knowledge to practical work.

Even though many skilled workers are graduates of vocational colleges now, few people delve into technical difficulties, because they only regard technical work as a job to earn money, not a career. "Only when you like this line from the heart will you pursue Excellence."

China News Network-43rd World Skills Competition: Young people learn to paint cars and become world champions.

Baidu encyclopedia-automobile painting