Donghua University textile and material innovation technology unveiled at the Industry Fair

Washing textiles for 50 times can still maintain excellent antibacterial effect; sweat-wicking sports and leisure fabrics can be loaded with antibacterial, flame retardant and other functions; magical surgical suits for medical staff to build a "protective wall"... Yesterday (November 1 At the opening of China International Industry Fair 2016, Donghua University exhibited a number of innovative technologies covering textile fabrics, medical and protective materials, high-performance fibers, aerospace composite materials , energy conservation and environmental protection . The distance between high technology and the audience is close to the concept of "people-oriented technology, R&D and direct demand".

High-value fiber who "cut" out of function hybrid "scissors"

Socks and underwear not only have good antibacterial effect, but also eliminate odor caused by bacteria. Don't like it, this is just the product performance of the functional textiles 2.0 era. The combination of antibacterial, flame retardant and other functional and comfort products has shown a combination of signatures. At the Industrial Fair, the "Health Protection Functional Hybrid Materials and High-Value Polyester Fiber Design and Development" project at the Donghua University exhibition area brought people's awareness of textile functions into the 3.0 era.

In recent years, the health-protecting functional textiles that have been introduced have been favored by consumers at home and abroad, but the high-value functional fibers required for such products have difficulty in unifying the efficacy, durability and processability in production. Professor Zhu Meifang, Dean of the School of Materials, Donghua University, has been focusing on the research and development of functional hybrid materials for more than ten years. The exhibitors brought by the team have systematically solved the technical bottleneck in the process of industrialization of such functional fibers.

Professor Zhu Meifang, the project leader, introduced that hybrid technology can realize the "cutting" and "assembly" of material functions, which is of great significance to promote industrial upgrading and structural optimization of fiber and textile industries. The project team introduced hybridization and functional assembly technology in the synthesis, fiber molding and textile post-processing of polyester. The design of the hybrid metal-ion antibacterial hybrid material with specific morphology, composition and structure was invented. The functional material was studied in polyester. A new method for uniform and stable dispersion in the matrix. The prepared material has stable performance, adjustable shape, high efficiency and long-lasting function, and can be applied to the development of multifunctional fibers and finishing functional fabrics such as socks, underwear, casual sports clothes and medical textiles , and meets the transformation and upgrading of the chemical fiber industry . The urgent need for sustainable development. The project has formed three intellectual property systems, namely functional hybrid resin, fiber and its processing technology. It applied for 12 national invention patents (including 10 of which have been authorized), and published 1 monograph and 17 papers. The results are domestically leading and internationally advanced. Level, won the first prize of 2015 Shanghai Science and Technology Invention.

It is understood that the project belongs to the interdisciplinary field of fiber processing technology and polymer-based composite materials. On the basis of the results of the team's award-winning project "Loading Metal Ion Hybrid Materials" in 2013, this time increased the flame retardant function of fiber materials. When the silver-based antibacterial agent is processed at high temperature, the redox reaction is deteriorated and the color becomes yellow, which reduces the effect or even fails. The product developed by the project does not change color after high temperature processing, and does not affect the antibacterial effect. The antibacterial Kusima fiber and antibacterial pure polyester fiber ( polyester ) knitted fabric developed this time were tested for antibacterial activity according to industry standard methods. The antibacterial rate against Staphylococcus aureus was close to 100%, and the antibacterial activity against Escherichia coli and Candida albicans was inhibited. The rate is also far higher than the standard value, both above 95%. The experiment also showed that the antibacterial effect of the antibacterial fiber product (fabric) can reach the industry standard AAA level even after 50 times of washing, and the uniformity of efficacy and durability is successfully achieved.

The results of the project series have made important contributions to improving people's health and improving their quality of life. They can provide new fiber fabrics for domestic fabrics instead of imported fabrics and high-grade fabrics. I believe that more textiles will be branded with Donghua imprint in the future.

Magical medical protective materials build a healthy "protective wall" for the human body

Doctors often wear a blue shackle during surgery. You can know that a small surgical gown should not only be wet and ventilated, but also allow doctors to perform surgery freely, and build a "protective wall" for medical personnel to protect them. Protect from various viruses, bacteria, pollutants, etc. during surgery. At the booth of Donghua University, the university exhibition area of ​​the 2016 China International Industry Fair, which was opened recently, it showed such a magical surgical gown. Not only can it help the medical staff to resist the "offensive" of blood, alcohol and oil stains, but also It is also effective against static electricity and prevents dust from entering during surgery. The research and development of this technology is the team of Prof. Qi Xiangyu from the Textile College of Donghua University. The team brought the project "Key Technology and Industrialization of Non-woven Materials for Medical Protection and Protection" to the Industrial Fair, which brought new medical and protective materials to the visitors. The results show.

It is understood that this surgical protective suit uses micro-nano-grade medical protective materials, its biggest advantage is "three rejections and one resistance", that is, blood, alcohol, oil and antistatic. Don't underestimate this "reform". Dealing with blood is almost a "family thing" that every doctor will encounter during surgery. If the patient is a carrier of infectious virus, then the blood becomes an excellent "channel" for the spread of the virus. At this time, the medical and protective materials developed by Professor Yan's team have come in handy, which can effectively block blood and alcohol. Waiting for the intrusion of the health care workers to protect their health.

In addition to the special field of surgical clothing protection, the research and development results of the team of professors have also "fly into the homes of ordinary people." Take baby diapers, mothers often find that the baby used a diaper to have a "red butt" phenomenon, which is because the diaper itself is not ideal for guiding materials, it is easy to concentrate urine. The baby diapers developed by the team's team's results have effectively avoided this problem. The team developed a composite flow guiding material using the preparation technology of "directional drainage + damping diffusion". The diaper made with this material The diversion and absorption of urine is more uniform, effectively preventing the baby's "red butt" phenomenon. At present, in addition to baby diapers, the results have also been spread in the production of adult diapers.

Since 2003, Prof. Yan has been engaged in the series of research and development of medical protective materials. The five major categories of protective mask filter materials, drainage materials, functional medical dressings, shatterable spunlace materials and medical protective clothing materials have been developed. It has reached the international leading technology level, and the team has been authorized to invent 14 patents and 3 utility models. The team cooperated with the enterprise to actively promote the transformation of achievements. Now it has built a production base of medical and health materials with an annual output of 80,000 tons. It has developed a series of medical protective masks, surgical protective clothing, surgical sheets, adult and baby diapers, and women's sanitary napkins. Medical protective products and sanitary products, the application unit covers well-known corporate brands such as Procter & Gamble, Japan Kao Company and China Hengan Group. In the three years from 2013 to 2015 alone, the team's new production value reached 1.27 billion yuan, generating foreign exchange of 120 million US dollars, and the economic benefits are very significant.

In this regard, Prof. Yan said that as a university scientific researcher, it is necessary to use as much as possible from the needs of the country and the needs of ordinary people to apply more results to actual production and life. "Medical protection is no small matter, this is our responsibility. It is our duty. In the future, we will continue to deepen our efforts in this field and serve the country more for the people."