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With the improvement of people's living standards and the change of consumption patterns, clothes have changed from "not enough to wear" to "not enough to wear". It is estimated that by 2020, the total reserves of waste textiles can reach nearly 0.2 billion tons, while the recycled spinning capacity is only 10 million tons.

How to dig deep into the textile recycling "rich ore", so that waste textiles into treasure, open up the textile industry circular economy road? Donghua University Research Institute Vice President Wang Huaping researcher showed the "China program", he brought the project "waste polyester efficient recycling and fiber preparation industrialization integration technology" to participate in the 21st China International Industry Fair, won the second prize of the 2018 National Science and Technology Progress Award.

　　"Wake up" 0.2 billion tons of waste textiles with high technology

According to the calculation of China Textile Industry Federation, if all the waste textiles in China can be recycled, it is equivalent to saving 24 million tons of crude oil, 80 million tons of carbon dioxide emissions and nearly 1/3 of cotton planting area. However, there are still several mountains to cross before the road of the recycling cycle of waste textiles. For consumers, textile recycling is often equated with "black heart cotton", is there really a market for new-made old clothes? For enterprises, different sources, colors, textures and other waste textiles how to balance the cost and quality on the basis of large-scale industrialization?

Turning waste into treasure requires technology leadership. As early as 2004, Wang Huaping focused on the "treasure" of waste textiles ". For more than ten years, Wang Huaping has led the scientific research team to "drill" in a down-to-earth manner in the spirit of Yugong moving mountains. If there is no industry standard, then do research in a down-to-earth manner. As the main technical leader, Wang Huaping participated in the launch of the China Chemical Fiber Regeneration and Recycling, Bio-based Fibers and Biochemical Raw Materials Technology Innovation Alliance to promote the construction of industry standardization system. If consumers have misunderstandings, they should attack the difficult problems in a down-to-earth manner and strictly control the "safety" of recycled textiles ". In addition, technical problems such as the stability of regenerated fiber, the regeneration process of tempering and tempering, color change and color difference control have been overcome one after another ...... Wang Huaping confidently told reporters: "From a technical point of view, China's regenerated fiber technology has been in a leading position in the world!" The physical and chemical method of polyester textiles pioneered by the project has realized efficient regeneration from fiber to fiber. The cost of recycled polyester produced is reduced by 25%, but its performance is comparable to that of virgin polyester. It has been tested by professional institutions and fully meets the safety requirements of ecological textiles.

　　"Hand in Hand" Yangtze River Delta Enterprises Collaborate to Leverage 100 Billion Yuan Textile Circulation Market

From the laboratory to the workshop, this section of the road is not long or short. How to really land after the breakthrough of the core technology of waste polyester recycling, so that the waste polyester recycling production line of the enterprise "moves" has become the top priority of Wang Huaping's scientific research team in the next step. He has set his sights on enterprises in the Yangtze River Delta region, "the integration of the Yangtze River Delta has become a national strategy, as a scientific research worker in colleges and universities, we hope to promote the integration of scientific and technological innovation through school-local cooperation and school-enterprise linkage development, and open up the" last mile "from university laboratories to enterprise workshops '."

After overcoming the technical difficulties, Wang Huaping, as the chief technical officer of the project, joined forces with Ningbo Dafa Chemical Fiber Co., Ltd., Jiaxing Haiyan Haili Environmental Protection Fiber Co., Ltd., Jiangsu Youcai Environmental Protection Resources Technology Co., Ltd. and other enterprises to cooperate with schools and enterprises and tackle key problems together. Chen Ye is the backbone of the post-80s young teachers in the scientific research team. He commented on his mentor Wang Huaping in this way. "Teacher Wang is definitely the one who knows the needs of enterprises best in the field of engineering technology and the one who knows the application of engineering best in the field of scientific research." Chen Ye said that following Mr. Wang to run factories and visit enterprises has become a "compulsory course" in his work ". Teacher Wang often warned him to think and solve problems from the perspective of the enterprise. He should not only write papers, but also open process sheets. He should be familiar with every process in the production process like an enterprise engineer. It is precisely with such high standards and strict requirements that the scientific research team led by Wang Huaping can quickly respond to and solve the problems encountered in enterprise engineering applications, and school-enterprise cooperation can maximize the joint force to create economic and social benefits.

Today, the project has built the world's largest production base of recycled polyester fiber, producing 300000 tons of waste spun recycled staple fiber, 150000 tons of bottle chips and recycled filaments, and 75000 tons of low melting point/recycled polyester composite staple fiber every year. In the past three years, the unit has achieved sales of 7.99 billion yuan and earned 0.261 billion US dollars from exports. Authorized 38 invention patents, published 10 scientific and technological papers, and formulated 3 standards, which realized the efficient recovery and high-value utilization of waste polyester textiles in my country, greatly improved the technical level of polyester recycled fibers, and enhanced the image of my country's textile recycling economy as a big country. And status.

It is understood that with the deepening of school enterprise cooperation, the application field of recycled polyester is also expanding. Cutting-edge technology allows the once inconspicuous waste textiles to be "beautifully regenerated". It is not only widely used in automotive interiors, environmentally friendly clothing and other fields, but also widely used in sea-crossing bridges, Water conservancy dams, highways, construction and other fields of crack prevention, reinforcement, isolation and other projects. Recycled polyester is no longer a substitute for low-end textiles, but to achieve a "corner overtaking", waste and better, really leveraging the hundreds of billions of yuan textile recycling market.

　　National demand is the "baton" of scientific research"

Since 2006, Wang Huaping has won the second prize of national scientific and technological progress five times. When the reporter asked about the secret of winning the prize, Mr. Wang gave this answer: "to do different things at different stages, the national demand is the 'baton' of scientific research '." This is the inheritance of the "high-speed spinning" spirit of Donghua University, and it is the persistence of our fiber engineering characteristics.

Researcher Wang Huaping guides students to carry out scientific research work

In the 1990 s, high-grade fabrics with functional comfort were imported. Wang Huaping led the team to develop the forming technology of thermoplastic polymer-based nano-composite functional fibers and the key technology for preparing high-moisture conductive polyester fibers and products, which not only realized the self-sufficiency of functional fibers, but also exported to all countries in the world. Entering the new century, Wang Huaping has aimed at the research and development of superfine denier polyester filament, overcome technical and production problems, and demonstrated the level of Chinese fiber to the world with high-quality superfine denier filament. Nowadays, environmental problems are becoming increasingly serious. As the world's largest textile producer and consumer, China has a particularly serious problem. Wang Huaping has broken through the efficient recycling technology of waste polyester and provided a Chinese solution for fiber technology innovation to solve resource and environmental problems.

Wang Huaping said frankly that behind each award is the team's efforts for more than ten years. He often tells team members to have "national team awareness", what the country needs, and what we can do. Only such reflection can maintain a "clear" scientific research mind.

(Source: Guangming Daily)