China's green flame-retardant viscose fiber market conditions

In recent years, with the explosive expansion of viscose staple fiber production in China, and the financial crisis represented by the European Union since the fourth quarter of 2011, the market demand has fallen sharply, giving export-oriented domestic textile industry belts. Has unprecedented influence. At present, the upgrading of domestic viscose fiber products is imminent.

Viscose fiber companies at home and abroad have a consensus on product upgrading, but the strength and effect are quite different: Lenzing has said that it will invest 130 million euros in the construction of the local Tencel fiber plant, and its Tencel fiber production capacity will increase by 67,000 tons; In addition, it will also expand the production of Lenzing Modal and Lenzing FR.

In China, based on the successful development of phosphorus-based flame-retardant viscose fiber, Jilin Chemical Fiber has also developed a flame-retardant viscose fiber that is based on a black color system and supplemented by a variety of color systems. According to reports, Jilin Chemical Fiber's flame-retardant viscose fiber is developed on the basis of DXL1212, a special phosphorus flame-retardant for viscose that has independent intellectual property rights. Shandong Yinying Chemical Fiber Co., Ltd. successfully completed the transformation and upgrading of an industrialized production line in 2011, which enabled it to have an annual production capacity of 15,000 tons of flame retardant viscose fiber.

Judging from the current domestic and foreign flame-retardant viscose fibers, Shandong Yinying Chemical Fiber Co., Ltd. adopts silicon-nitrogen composite flame retardant produced by Xinxiang Changhong Chemical Co., Ltd. The flame-retardant viscose fiber developed has more green environmental performance, and its future The market prospects are even greater. Because the phosphorus-based flame-retardant viscose fiber is accepted by the market at present, there are doubts and concerns about its odor fumes and green environmental protection performance in the future.

The development and production of silicide-based flame-retardant viscose fibers is different from other additive products such as matting filaments. It is a revolutionary change in the product's production process and requires a revolutionary thinking and design of the entire process of production.

First of all, the main problem that arises in the development is not the flame retardant effect. More importantly, the implementation of the process requires specific supporting facilities and technologies, including the settlement of the flame retardant in the vessel and in the pipeline, and the deactivation of the nitride. And so on, although it is more troublesome in actual production, it is a necessary process.

As a result of the increase in the viscosity of the viscose component, many organic silicides have a significantly higher specific gravity than the viscose, resulting in a great change in the performance of the viscose quality indicator. The same linear density, compared with ordinary viscose fiber, the actual diameter of the flame-retardant viscose fiber is much smaller, which actually increases the difficulty of production. How to provide a uniform quality of viscose for spinning is critical, and also has a greater impact on the spinning cycle; the problem of thread strength is one of the keys to the success of subsequent textile processing, and it is also a textile material. The key lies.

Secondly, after the filaments contain flame retardant components, the surface structure and the overall structure of the filaments have undergone major changes. To achieve the oiling effect required for textiles, it is necessary not only to select a stronger softness and inclusion. And smooth oil, but also need to take a more rigorous oil control process and measures to ensure good follow-up product value. In other words, silicon-based flame-retardant viscose fibers require proprietary finishing and finishing agents.

At present, the timing of large-scale production of silicide fire-retardant viscose fibers is near mature, and can produce colored flame-retardant viscose fibers of various colors. However, in the market promotion and large-scale production, fiber companies still have many concerns. The main reason is not that the flame retardant technology itself, but the optimization of the production process is difficult. The technical measures and management methods that are appropriate to it need to be re-established. . The flame retardant used is relatively expensive, and the production cost of the enterprise is high, which makes the company's production enthusiasm low. The process technology for the production of silicide-based flame-retardant viscose fibers still needs further optimization and refinement, especially in the case of short fibers. The market development of the product is not enough. The market and customers need to improve their product awareness. In addition, the product's price/performance advantage is not obvious. There is a lack of collaborative communication between flame retardant manufacturers and silicide-based flame-retardant viscose fiber production companies, and the time to solve the problem of large-scale production is lagging behind.

In addition to the cross-sectional shape of the flame-retardant viscose fiber is irregular zigzag, the silicon-nitrogen-based flame-retardant viscose fiber is also safe and non-toxic, can be naturally degraded into a soil component, has high flame retardancy, good self-extinguishing effect, Resistance to washing and chemical treatment, good moisture absorption and breathability, good far-infrared performance, warmer than ordinary fibers.

After the flame retardant is added to the yarn, the specific weight of the dry yarn itself changes, and it is not applicable according to the relationship between the original ordinary fiber denier and the length and quality. The two different fibers of the same thread have the same length and the difference in mass. Larger, this is something that needs to be considered and valued in the textile process. The current development and production of silicified flame-retardant viscose staple fiber, the strength is worse than ordinary viscose staple fiber, and the dry stretch is relatively small, so the manufacturer's cotton product length should be 40mm ~ 45mm, and it is best to take and resistance The method of burning synthetic fiber blends can, on the one hand, improve the overall strength and processability of the yarn, and on the other hand, it can also reduce the cost of the product on the premise of ensuring the excellent flame retardant effect of the yarn and the fabric. Of course, silicid flame-retardant viscose fibers are not inferior to single spun yarns, provided that the strength and elongation are satisfactory. Silicified flame-retardant viscose fiber products have less heat shrinkability and need to be considered in the weaving process.

After the flame retardant is added to the yarn, changes in the internal components of the product lead to changes in its color-receiving properties. The choice of dyeing pigments and process control methods need to be changed in order to obtain satisfactory long-term dyeability. In addition, during the washing process, in order to maintain a durable flame-retardant color performance, selective washing methods and processes are required.

In general, silicide-based flame-retardant viscose fiber not only has a revolutionary breakthrough in the production process, but also needs to be adjusted and adapted accordingly for spinning, weaving and dyeing.

For a long time, in domestic and foreign markets, flame-retardant viscose fiber has been monopolized by some foreign companies due to technical problems, so the market supply is small and the price is high. There are fewer mature products approved in the market, which greatly restricts consumer use, and also inhibits the growth and development of the market. Despite the increasing protection of customers and consumers of textile products and their willingness to purchase textile products. For the current domestic production of flame-retardant viscose fiber, the key lies in the price of flame retardant. Because the price of flame retardant is relatively high and the production cost of the enterprise is high, it will lose its continuous confidence and interest. Of course, it also includes flame-retardant adhesive. Rubber fiber technology and equipment problems. The silicide-retarded viscose fiber has good flame-retardant effect, is safe and non-toxic, and can be naturally degraded. It is a true green environmental protection product, and it is also because the silicide-based flame retardant has a lower price advantage, making the silicide hindered. The viscose fiber products have a better price/performance ratio in the market. With the development and promotion of the corporate market, they will continue to increase customer awareness and product consensus, and the further reduction of product prices will also be accepted by mass consumers.

Undoubtedly, the market demand for flame-retardant textiles will increase, and silicide-based fire-retardant viscose fibers will also attract much attention in the flame-retardant fiber market. Its market prospects are vast and it is currently a large-scale production upgrade. The product is also a truly green flame retardant product.