Drive the green transformation and upgrading of the textile industry - leading a "cloth" and "weaving" for a low-carbon future

"In the future, the demand for recycled fiber raw materials will grow rapidly." Sun Huaibin, vice president of the China Textile Industry Federation, said that due to the constraints of the recycling system, sorting methods, technology and standards, the current domestic recycled fiber raw materials are mainly PET bottle pieces and industrial textile waste, the number of old clothes and fabrics from urban and rural residents is small, and the overall efficiency of waste textile recycling is low. "Next, we should speed up the change of waste textile sorting methods based on traditional manual identification, research and development of relevant sorting, opening, recycling equipment, etc., in order to improve the recycling rate of waste textiles and the output of recycled fibers, build a waste textile resource recycling system, and promote the development of related industries." Taking the recycling of waste textiles as a breakthrough will also help improve the entire recycling system of waste materials and improve the level of resource recycling." Sun Huaibin said.

Carbon fiber helps save energy and reduce emissions

Last year, the seventh generation of the 200 km/h maglev train made by CRRC was officially unveiled. It has a very special technical highlight: the body material is not the familiar aluminum alloy, but carbon fiber composite material.

The textile industry, which is gradually moving toward high-end, intelligent and green, can not only weave cloth, but also weave "everything". In addition to familiar clothing and home textiles, China has also made many innovations in industrial textiles, providing new possibilities for promoting the realization of the "double carbon" goal - carbon fiber is a typical representative of them.

Carbon fiber refers to the carbon content of more than 90% of high strength and high modulus fiber, with extremely high composite strength and high temperature resistance properties, can be used in aerospace, rail transit and other fields, replacing traditional metal products, thereby reducing the weight of equipment, reduce braking energy consumption, energy saving and emission reduction effect.

Taking the seventh generation of 200 km/h maglev train as an example, the use of carbon fiber composite materials has reduced its weight by 30% and increased its passenger capacity by 20%. Not only high strength, fatigue resistance, corrosion resistance, long service life, lighter body also reduces the operation energy consumption, more energy saving and environmental protection.

"In the field of new energy, carbon fiber, as a new lightweight material, also has a huge space to play." According to Yan Bing, vice president of Jiangsu Jiqi Carbon Fiber and Composite Materials Application Technology Research Institute, carbon fiber can be used in wind power, photovoltaic and other new energy equipment, such as making wind power blade girder, carbon carbon composite crucible for photovoltaic; It can also produce parts such as hydrogen storage bottles and battery electrodes for hydrogen energy vehicles. "It can be said that carbon fiber is essential to promote the realization of the two-carbon goal."

At present, Jilin Chemical Fiber Group is the largest carbon fiber production enterprise in China, with an annual capacity of 60,000 tons of carbon fiber and 25,000 tons of carbon fiber. The product specifications cover many varieties of large and small tow. In Jilin City, Jilin Province, there are 19 carbon fiber R & D and production enterprises, and more than 10 kinds of end products in 4 series of carbon fiber downstream products have achieved large-scale production, located in the carbon fiber industrial base in the economic development zone of Jilin City, and identified by the Ministry of Science and Technology as "national carbon fiber high-tech industrialization base".

Carbon fiber industry development has also received support from the local government. In September 2021, Jilin Province issued the "Several Measures to Promote the High-quality Development of Carbon Fiber and Composite Materials Industry", which formulated 19 specific policy measures from five aspects: optimizing spatial layout, highlighting innovation leadership, strengthening chain construction and chain reinforcement, ensuring factor supply, and strengthening policy support.

Jiangsu Province also has a good carbon fiber industry foundation, has cultivated a number of carbon fiber enterprises such as Zhongfu Shenying, Jiangsu Hengshen, and has a relatively complete upstream and downstream industry chain.

Taking Changzhou, Jiangsu Province as an example, up to now, Changzhou National High-Tech Zone has 45 enterprises associated with the carbon fiber and composite materials industry chain, and the sales revenue of enterprises in the carbon fiber and composite materials industry chain reaches 15 billion yuan in 2021. In recent years, the local carbon fiber and composite material industry has developed in the direction of scale, clustering and internationalization, forming the whole industrial chain ecology of carbon fiber raw fiber, carbon fiber, fabric, resin, prepreg, composite material products, key equipment and inspection and testing.