Method for preparing apocynum venetum regenerated fibers

A technology of regenerated fiber and apocynum, which is applied in the processing of fiber raw materials, post-processing of cellulose pulp, rayon made of viscose, etc. and other issues, to achieve broad market prospects, achieve a virtuous circle, and achieve the effect of low cost

Inactive Publication Date: 2011-11-09
戈宝绿业(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First, the output is low. To obtain high-quality fibers, manual peeling is still required. Mechanical peeling contains a lot of impurities and damages the fibers.
[0005] Second, Apocynum cellulose has high degree of polymerization, crystallinity, high degree of orientation, strong fiber rigidity, low extensibility, poor elasticity, small cohesion force, poor spinnability, etc. It is difficult to spin pure spinning and high count yarn, which restricts the development of high-end clothing of apocynum
[0006] Third, most of the apocynum stalks are discarded, resulting in a large waste of wild resources
There is no report on the use of discarded hemp stalks to develop regenerated hemp fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Apocynum kenaf stalks were air-dried and crushed, and the crushed stalks were pre-hydrolyzed at 140°C for 120 minutes with a bath ratio of 1:6, then fully washed with water, and set aside.

[0033] The pretreated raw materials are cooked, the cooking liquid is lye containing sodium sulfide, and sodium hydroxide is used as the alkali, the same is true for the following examples, and will not be repeated. The technological conditions of boiling are: use alkali amount 18% (to hemp stalk weight), degree of sulfidation 25%, bath ratio 1: 6, heating time 2 hours, 165 ℃ of insulation 2.5 hours. The crude pulp obtained after cooking is fully washed with water at 65° C. until neutral. The crude pulp is further processed by refining process. The refining process conditions are: 8% alkali amount (to the weight of hemp stalk), 5% sulfidation degree, 1:6 bath ratio, 2 hours heating time, and 2 hours heat preservation at 130°C. The refined pulp obtained after refining is fully wash...

Embodiment 2

[0038] Air-dry the Apocynum baicalensis stalks, crush them, and pre-hydrolyze the crushed stalks at 135° C. for 140 minutes with a bath ratio of 1:6, then fully wash them with water, and set aside.

[0039] The pretreated raw materials are cooked, and the cooking conditions are as follows: 20% alkali, 23% sulfide, 1:6 bath ratio, 2.5h heating time, 2h heat preservation at 170°C. The crude pulp obtained after cooking is fully washed with water at 70° C. until neutral. Then the crude pulp is continued to be treated by a refining process. The process conditions are as follows: the amount of alkali used is 10%, the degree of sulfidation is 6%, the bath ratio is 1:6, the heating time is 2 hours, and the temperature is kept at 135° C. for 2 hours. The refined pulp obtained after refining is fully washed with water at 70°C until neutral.

[0040]The refined pulp is bleached in two stages, and the process conditions are: total chlorine consumption 9% (70% in the first stage, 30% in t...

Embodiment 3

[0044] Apocynum kenaf stalks were air-dried and crushed, and the crushed stalks were pre-hydrolyzed at 145° C. for 100 min with a bath ratio of 1:6, then fully washed with water, and set aside.

[0045] The pretreated raw materials are cooked, and the cooking conditions are as follows: the amount of alkali used is 19%, the degree of sulfidation is 22%, the bath ratio is 1:6, the heating time is 2 hours, and the temperature is kept at 160° C. for 3 hours. The crude pulp obtained after cooking is fully washed with water at 65° C. until neutral. The crude pulp is continued to be treated by refining process, and the process conditions are: the amount of alkali used is 9%, the degree of sulfidation is 7%, the bath ratio is 1:6, the heating time is 2h, and the temperature is kept at 140°C for 2h.

[0046] The refined pulp obtained after refining is fully washed with water at 70°C until neutral.

[0047] Refined pulp is bleached with two-stage process, process conditions: total chlo...

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Abstract

The invention discloses a method for preparing apocynum venetum regenerated fibers, which comprises the following steps in sequence: pre-treatment, stewing, refining, bleaching, alkalization, aging, blanching, ripening and spinning. The generated fibers produced by the invention have high spinnability and can be blended with any fiber or spun exclusively. The method solves the treatment problem of apocynum venetum wastes and develops the new use of apocynum venetum resources.

Description

technical field [0001] The invention relates to a method for preparing regenerated fibers, in particular to a method for preparing regenerated fibers by using the whole apocynum stalk as a textile raw material. Background technique [0002] The term "Apocynum" is a famous agricultural economist in my country, Mr. Dong Zhengjun, who discovered the use value of its fiber in Lop Nur, Xinjiang in the 1950s and named it. The apocynum he refers to is a general term equivalent to all plants of the genus Apocynum created by Linnai of the former Soviet Union. It belongs to Apocynaceae and is a perennial herbaceous plant. Its leaves can be used to make tea, medicine, and fiber is a raw material for high-end clothing. Have 3 kinds in my country, namely; Purple spot hemp) Poacynum pictum (Schrenk) Baill. Apocynum apocynum grows for one season every year, and its roots are reserved for new plants to germinate in the next year. Generally, tea leaves need to be grown for 3-5 years after...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/06D21C5/00D21C9/00D21C9/10
Inventor 孟繁杰刘起棠巩继贤张健飞杨文芳林本术
Owner 戈宝绿业(深圳)有限公司
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