Production technology of cellulose carbamate fiber filaments
A urethane and production process technology, which is applied in the production process of regenerated cellulose fiber and the production process of cellulose urethane fiber filament, can solve the problem that the process of cellulose urethane fiber cannot adapt to industrialization Large-scale production and other issues, to achieve good spinnability, taking into account production costs, and good product performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- Publication Date
- 2017-05-24
Abstract
Description
technical field
[0001] The invention relates to a production process of regenerated cellulose fibers, more specifically, the invention relates to a production process of cellulose urethane fiber filaments, and belongs to the technical field of cellulose urethane fiber production. Background technique
[0002] Cellulose fibers are chemical fibers made from natural fibers that are continuously regenerated in nature. Nowadays, the production of cellulose fiber is mainly viscose method, and the product produced is viscose fiber.
[0003] Viscose fiber is a kind of regenerated cellulose fiber, and it is one of the earliest chemical fibers put into industrial production. Viscose fiber has good hygroscopicity, comfortable wearing, and excellent spinnability. It is often blended and interwoven with cotton, wool or various synthetic fibers, and used in various clothing and decorative textiles. High-strength viscose fibers prepared by using different raw materials and spinning proce...
Examples
Embodiment 1
[0045] A production process of cellulose urethane fiber filament, comprising the following process steps:
[0046] A. Activation of cellulose
[0047] The cellulose is soaked in sodium hydroxide solution first, and then subjected to alkalization treatment. After the treatment, it is filtered and washed, and then the alkalized cellulose is vacuum-dried to obtain activated cellulose;
[0048] B, the preparation of cellulose carbamate
[0049] Adding liquid ammonia solution of urea to the activated cellulose, soaking it, taking it out and drying it in a vacuum drying oven, and then heating it with microwaves to carry out esterification reaction to obtain cellulose carbamate;
[0050] C, the preparation of cellulose carbamate solution
[0051] Add cellulose carbamate to the sodium hydroxide solution for the first mixing and dissolving; then add the sodium hydroxide solution to the mixture for the second mixing and dissolving; add the sodium hydroxide solution to the mixture for ...
Embodiment 2
[0058] On the basis of embodiment 1:
[0059] Preferably, in step A, the cellulose is cotton linter pulp with a degree of polymerization of 400.
[0060] Preferably, in step A, the mass concentration of the sodium hydroxide solution is 15%, and the volume ratio of the sodium hydroxide to the amount of cellulose is 4:1.
[0061] Preferably, in step A, the soaking time is 1 hour, and the temperature is 5°C.
[0062] Preferably, in step A, the vacuum drying time is 1 h, and the temperature is 40°C.
Embodiment 3
[0064] On the basis of embodiment 1:
[0065] Preferably, in step A, the cellulose is cotton linter pulp with a degree of polymerization of 600.
[0066] Preferably, in step A, the mass concentration of the sodium hydroxide solution is 20%, and the volume ratio of the sodium hydroxide to the amount of cellulose is 6:1.
[0067] Preferably, in step A, the soaking time is 2 hours and the temperature is 15°C.
[0068] Preferably, in step A, the vacuum drying time is 3 hours, and the temperature is 60°C.