Semi-dull high-strength low-elongation viscose fiber as well as preparation method and application thereof
A viscose fiber, high-strength and low-elongation technology is applied in the field of semi-matte high-strength and low-elongation viscose fiber and its preparation, which can solve the problem that the development of new downstream textiles and industrial upgrading and the reduction of the market share of viscose fiber are not met to a greater extent. and other problems, to achieve the effect of high strength, good dimensional stability and low elongation
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Examples
Embodiment 1
[0061] The high-strength low-elongation viscose fiber of this embodiment is prepared by the following method:
[0062] A: Immerse the pulp raw material in an immersion barrel filled with lye, and grind it with a grinder to make a pulp porridge with a concentration of 3%;
[0063] B: Send the porridge prepared in step A to a press machine, and then send it to a pulverizer for crushing to obtain alkali cellulose, and then send the alkali cellulose to a kneading machine for kneading treatment, and obtain a concentration of 35% after treatment porridge;
[0064] C: Mix the porridge prepared in step B with lye and send it to the reactor, add pure oxygen to the reactor for directional depolymerization, after depolymerization, the degree of polymerization is 400-600, and the purity of cellulose is 98.0-98.5 % alkali cellulose;
[0065] D: The alkali cellulose prepared in step C is sent to the yellowing machine, and carbon disulfide is added in the yellowing machine to carry out the...
Embodiment 2
[0076] The difference between the semi-dull high-strength viscose fiber of this embodiment and embodiment 1 is: the semi-dull high-strength viscose fiber detected by random sampling in this embodiment has the following performance index system different from that of the embodiment:
[0077] The dry breaking strength is 3.20 cN / dtex, and the wet breaking strength is 1.73cN / dtex,
[0078] The strength required to produce 5% elongation in wet state is 0.65cN / dtex,
[0079] The dry elongation at break is 18.9%, and the wet elongation at break is 20.8%.
[0080] The crystallinity is 40%, the radial water swelling degree is 22.5%, and the content of matting agent is 0.3%.
[0081] The whiteness is 84.6%, the linear density deviation rate is -1.0%, the residual sulfur is 7.0mg / 100g,
[0082] The length deviation rate is +1.0%, the ultra-long fiber rate is 0.5%,
[0083] The double-length fiber is 1.0mg / 100g, and the defect is 1.0mg / 100g.
Embodiment 3
[0085] The difference between the semi-dull high-strength viscose fiber of this embodiment and embodiment 1 is: the semi-dull high-strength viscose fiber detected by random sampling in this embodiment has the following performance index system different from that of the embodiment:
[0086] The dry breaking strength is 3.35cN / dtex, the wet breaking strength is 1.75cN / dtex,
[0087] The strength required to produce 5% elongation in wet state is 0.65cN / dtex,
[0088] The dry elongation at break is 17%, and the wet elongation at break is 20%.
[0089] The crystallinity is 43%, the radial water swelling degree is 22.5%, and the matting agent content is 0.75%.
[0090] The whiteness is 84%, the linear density deviation rate is -1.5%, the residual sulfur is 5.5mg / 100g,
[0091] The length deviation rate is +2.0%, and the ultra-long fiber rate is 0.5%,
[0092] The double-length fiber is 0.95mg / 100g, and the defect is 1.0mg / 100g.
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Abstract
Description
Claims
Application Information
- IPC
- D01F2/08; D01F11/02; D01D5/06; D01D5/12; D01D10/06
- Inventors
- 冯涛; 邓传东