1July, 940, he resolutely set off for home. On his way home, he went through difficulties and obstacles, arrived in Hong Kong in August, 1940, met his wife who came to Hong Kong from the enemy-occupied area in Beiping, and then entered Kunming via Vietnam. In June of the same year, 1 1 arrived in Chengdu, and was hired by Chengdu West China University and Leshan National Central Technical College as Professor Geng of the Ministry of Education. At that time, the Department of Textile Dyeing and Tanning was established in the Department of Chemistry of West China Sheikh University. At first, he offered courses in tanning engineering and protein chemistry, while continuing to study the mechanism of plant tanning. /kloc-in the spring of 0/942, he began to take classes at the Central Institute of Technology in Leshan. The Central Institute of Technology was established in April 1939, and the tanning department only held three sessions. Zhang Quan gave a lesson on tannery engineering to the second grade students. Because of the inconvenient transportation, there are also soldiers and bandits harassing on the road, which is very hard, about a week every month. Later, due to various reasons such as insufficient practice space, the technical college closed the leather department. The last class, the third class, was arranged by him to graduate from Huada.
Chengdu Tannery Senior Vocational School, founded in Sichuan Province, was established during the Anti-Japanese War to train tannery technical cadres in Sichuan Province. Founded in 194 1 1, the first president is a professor. Less than a year later, Mr. Guo, the director of education, was invited to be the principal of the tannery school. He attaches great importance to running a tannery school. First of all, teacher YEATION invited his senior apprentice Le Yilun as the educational director, and a group of Gao Fei as chemistry and professional teachers. I also taught professional courses, emphasizing hands-on operation. Some graduates go to quartermaster tanneries and leather companies, and some are admitted to universities for further study.
After the Japanese imperialist aggression launched the Pearl Harbor incident, Beiping yenching university was sealed up. Yanda alumni are preparing to resume their studies in Chengdu, and Zhang Quan also participated in the preparations for resuming their studies. 65438-0942 Head of the Department of Chemistry, Chengdu Branch, yenching university. At that time, all chemistry students were attending classes in Huada until Xia Yu 1946 moved back to Beiping. 1946 autumn, was hired by Sichuan University to concurrently serve as the guidance professor of the Department of Chemistry of the School of Science of Sichuan University. He took five graduate students and taught chemistry students. Since 1948, he has also taught in Chengdu Mingxian College and Chengdu Science College. He has taught industrial chemistry, industrial chemistry calculation, protein chemistry, organic chemistry and other courses. In the lecture, he didn't follow the book, but quoted widely, which made the lecture colorful and popular with the students. He attached great importance to the cultivation of students' experimental ability and academic methods, and trained a group of scientific and technological backbones for the country with strict requirements. Some students didn't engage in leather industry later, but they have achieved fruitful results in chemistry, biochemistry, biopolymers, forest chemistry, protein chemical industry and so on, enjoying a high reputation at home and abroad.
During the Anti-Japanese War, there was a serious shortage of tanning chemicals in the mainland. Mr. Zhang Quan instructed students to study the development of vegetable tanning materials in combination with reality. For example, the tanning properties of rubber bowl, birch bark and ginger head were studied. At the same time, the liming, pickling, chrome tanning, iron tanning and smoke tanning in bare skin were also studied. Sichuan goatskin enjoys a good reputation at home and abroad, but it is all dry skin. If salt skin is used instead, the quality of leather will be better. He instructed students to study the preservation method of goatskin, and treated goatskin with industrial salt or sodium sulfate to make good quality leather. He led his assistants and students to read "Study on the Combination of Tannin and Leather Powder in China Oak", "Study on the Expansion of Collagen Fiber" and "Study on the Conservation Chemistry of Sheep Sheepskin" in194 1945 chinese chemical society Chengdu Branch, 1949 Western Federation of China Science Society and China Natural Science Society respectively. Especially, the research on the combination of China oak tannin and leather powder, and Dr. Lola from the University of Cincinnati continued to study the combination of tannin, tannin and collagen, and reached the same conclusion, indicating that Mr. Zhang Quan's research in this field is still at the world level even under very difficult conditions.
The smile of victory in the Anti-Japanese War did not last long, that is, it was replaced by the cloud of civil war, prices soared, the economy collapsed, and the people were in dire straits. Due to the exhaustion of financial resources, the Central Institute of Technology and Chengdu Tannery School closed down one after another, and many research projects with initial results were dismounted one after another. A clever woman can't cook without rice, so all Zhang Quan's plans and ideas for developing the leather industry went down the drain.
He felt that there was no way to serve the country, his ambition was hard to pay, and he was sad that his dream career could not be realized. If you are poor, change it. Zhang Quan is looking forward to the dawn of the East.