纺丝有哪些方法工艺特点,

通常不能用熔体法纺丝的成纤高聚物,才用湿法纺丝和生产短纤维和长丝束.腈纶、维纶、氯纶和粘胶多采用湿法纺丝.
一般能用熔融纺丝的高聚物都用熔融纺丝法,但也不是说一定不能用溶液法纺丝.

In this paper,Viscose fiber is also called artificial cotton, is a kind of regenerated cellulose fiber, natural fiber as raw materials by wet spinning, with skin core layer structure, active cui LAN structure because of its special copper phthalocyanine dyes, lead to dye molecules diffusion within the fiber is more difficult, withering printed fabric color light and color. So it is difficult to dye diffusion penetration, printing need a lot of urea to hygroscopic help dissolve, help dissolve dye. As the earth's environmental protection consciousness enhancement, as a result, water pollution, eutrophication of material namely, nitrogen and phosphorus compounds, to reduce their consumption have become the subjects of dyeing and finishing industry. This article on how to reduce artificial cotton reactive cui LAN K - the amount of urea in the GL dye printing process to explore.
Keywords: viscose/active cui LAN K - GL/urea/environmental protection

螺杆温度170-190℃,压力10MPA,烘箱温度230℃,牵伸120℃,膨化140℃,压力4MPA,纺速1100米.QQ：413960682

Viscose fiber is also called artificial cotton, is a kind of regenerated cellulose fiber, natural cellulose as raw material by wet spinning and made, with skin core structure, because of its excellent properties, widely used in dyeing and finishing industry, especially active in the printing process, the products are deeply welcomed by consumers. While the reactive turquoise blue dye due to its special copper phthalocyanine dye molecule structure, makes more difficult diffusion into the fiber, light and color printing fabric wilt. So the stamp is needed when the amounts of urea to moisture to help dissolve, help dye dissolution. Urea containing nitrogen rich, in recent years, with the improvement of people's consciousness of environmental protection of the earth, as causing water pollution (eutrophication) material, namely the nitrogen, the phosphorus compounds, reduce its consumption has become an important research topic in the dyeing and finishing industry. At the same time, the traditional printing methods using steam fixation, because when steaming water supply, the demand for auxiliaries is not high, we can achieve the dyeing effect is good. But the steam fixation requires a very long time, usually for half an hour, energy consumption is very large. In the current global resource shortage situation, everyone started, as far as possible to reduce energy consumption, saving resources, to the enterprise sustainable development from personal road, the new direction is the development of printing and dyeing industry. So this paper is how to reduce urea reactive turquoise blue K-GL dye printing process of artificial cotton in the amount of exploration, printing methods curing fixation, shorter fixation time (30min → 130s), reducing energy consumption, saving resources. In the experiment we will look for a series of environmental protection urea alternative or adjuvant, to add to the printing paste, while the corresponding reduction in the amount of urea, printing effect is different, to find the best formula is printing effect, we explore the purpose.

聚丙烯腈的“熔点”高于其分解温度（具体多少度忘了,百度文库里有相关资料）,所以通常只能够采用溶液纺丝.但是BASF通过改变共聚单体,制造出了可用于熔融纺丝的聚丙烯腈,并已在美国实现了工业化生产.

(100% acrylic fibers)
the purple butterfly (100% polyamide fiber)
the silver thread strip (spinning)
jubilant (100% polyester fibers)
grain PEP
the ka bottom black grain (100% polyester fibers)
the ka bottom red circle (100% polyester fibers)
the black wrinkles cloth PUP

怎么说呢,反过来讲,第一如果粘流温度太高如聚丙烯晴,加工不划算,而且聚丙烯晴是极性聚合物,即使熔融粘度也很大,不利于加工,第二如聚乙烯醇,分解温度低于粘流温度,也是不能的,只要这几个不冲突都是可以熔融纺丝的
溶液纺丝的话,一是要能找到合适的溶剂,一般来讲非极性结晶高聚物不太适用于溶液纺丝,因为其熔融需要加热到熔点,很难找到这么高沸点的溶剂且还要接近的溶度参数,能找到合适的溶剂的都能溶液纺丝