The Main Force Of Biomass Fiber In The Future

At present, the shortage of global petroleum resources has become a serious problem that restricts the development of chemical fiber industry. In order to meet the market demand, there must be corresponding alternative resources to meet the needs of production development and consumption growth. Therefore, the economy of renewable and degradable new materials that can replace oil is increasingly apparent. At the same time, the demand for energy conservation and emission reduction and environmental protection has also prompted the chemical fiber industry to pay more attention to environmental protection and reduce energy consumption. The development of green biomass fiber and materials based on biomass engineering technology has become the new trend of leading the development of chemical fiber industry.

Seize opportunities biomass Rapid development of recycled fiber

With the improvement of people's living standard, consumers' demands for textiles are not only simple and warm, but also environmentally friendly and functional textiles and garments are gradually favored by consumers. Cellulose, represented by cellulose, has won unprecedented opportunities for development because of its excellent properties such as moisture absorption, breathability, comfort and abundant resources.

At present, many kinds of fibers have been developed by using renewable resources at home and abroad. Among them, the most mature technology and the largest dosage are regenerated cellulose fibers, including viscose fiber, high wet modulus viscose fiber, Lyocell fiber, acetate fiber, copper ammonia fiber and so on.

Viscose fiber is Regenerated fiber In 2009, China's main production capacity was 1 million 907 thousand and 200 tons, and its technology level and engineering level were at the advanced level in the world. As viscose fiber production process is long, "three wastes" pollution, old equipment and higher production costs, western developed countries and South Korea and Japan have gradually stopped the production of viscose fiber. At present, the growth of viscose fiber production capacity in the world is mainly concentrated in China.

In our country, when it comes to biomass fiber, bamboo fibers and hemp fibers are indispensable. Regenerated cellulose produced from bamboo pulp and hemp pulp is a kind of regenerated cellulose fiber developed in China in recent years. At present, many enterprises are engaged in research and development of these products, such as the chemical fiber, the JJG chemical fiber limited liability company, the Hailong long, the General Logistics Department of the PLA.

The appearance of high wet modulus viscose fiber overcomes the shortcomings of ordinary viscose fiber, such as low wet strength and wet modulus and poor dimensional stability. At present, China's chemical fiber group has officially realized the localization of high wet modulus fiber and launched the Lisai fiber. New dragon's new fiber is also an advanced high wet modulus fiber.

Environment and cost Double pressure Although the development of viscose fibers has been seriously hindered, the Environmental Friendly Non viscose cellulose fibers such as Lyocell fiber and Novel fiber have attracted the attention of experts at home and abroad. At present, the annual output of Lyocell fiber in the world is more than 120 thousand tons, of which Lenzing is the most important manufacturer. Due to strong demand, Lenzing has announced that it will expand its capacity of 25% in the factory, and the total capacity of its Lyocell fiber has reached 130 thousand tons / year. South Korea, Japan and Russia also have test lines for small batch production of Lyocell fibers. Many units in China have carried out research and development of Lyocell fiber.

Breakthrough in the key technology of biomass synthetic fiber

Biomass synthetic fiber mainly includes PTT fiber, PLA fiber, PHA series fiber and PBS series fiber.

China Haitian textile, Xiang Xiang Lu, Fangyuan chemical fiber, Zhong Zhong perch technology development company of Sheng Hong banner, and Guo Guo Xiang textile technology company are also developing PTT fiber with Sorona as raw material. Among them, the technology development of Zhong Zhong perch under Sheng Hong banner has produced PTT memory fiber and microfiber, and now it has begun to construct the 100 thousand phase / year PTT spinning project of the two phase.

PLA fiber is a new type of environment-friendly fiber and has broad application prospects. Luo Wen De, chief engineer of China Textile Industry Design Institute predicts that PLA fiber will only replace the market share of PET and PS fiber 5%, and its demand will be greater than 1 million 200 thousand tons / year, and with the expansion of production capacity, prices will also drop. At present, the development of PLA fiber has been further studied in China. It is reported that the Yangtze River Chemical Fiber Co., Ltd. has successfully developed a new process of polylactic acid one-step spinning. The annual output of 1000 tons of fiber grade polylactic acid industrialization project of the China Textile Industry Design Research Institute and the chemical fiber company has been approved by the NDRC.

The difficulty in fiber processing of polyhydroxyaliphatic acid esters (PHA) lies in the fact that PHA has the advantages of high brittleness, poor mechanical properties and narrow temperature range. If we can break through the key technology of spinning processing, we will have great improvement in cost control and dyeing properties, and will be the most competitive fiber varieties in the future.

In terms of polybutylene succinate (PBS), Japan's Showa polymer company and American company have achieved industrial production capacity of 5000 tons / year and 15000 tons / year respectively. In China, PBS has been researched and developed by the National Institute of organic chemistry, Chinese Academy of Sciences.