Lyocell fiber containing nano particles and preparation method thereof

A nanoparticle and fiber technology, which is applied in the field of functional Lyocel1 fiber modified by nanomaterials and its preparation, can solve the problems that nanomaterials/Lyocell fibers have not been reported, and achieve high recovery rate and simple spinning process

Active Publication Date: 2015-10-14
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the preparation of nanomaterial...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ①Nano silicon dioxide (SiO 2 ) hydrosol preparation: mix 30ml deionized water and 15ml absolute ethanol evenly, adjust the pH of the solution to 7-8 with ammonia water; ) solution was slowly dropped into the above ethanol / water mixed system, the stirring speed was 600r / min, and the reaction was carried out for 24 hours to obtain nano-SiO 2 Sol. Nano-SiO 2 The average particle diameter of the sol is 53.5 nm.

[0028] ②Crushing of cellulose wood pulp: crush the cellulose wood pulp with a degree of polymerization of 400-1000 into 0.1-0.5mm long pieces, and dry at 50°C for 12 hours.

[0029] ③ Nano SiO 2 Mixing of hydrosol and 50% NMMO aqueous solution: mix nano-SiO 2 The hydrosol was mixed with 50% NMMO in water.

[0030] ④ Nano SiO 2 / Cellulose / preparation of NMMO aqueous solution: According to the weight ratio of cellulose pulp and 50% NMMO aqueous solution is 12:100, the crushed wood pulp cellulose is added to SiO 2 / NMMO water system, stirring and swelling a...

Embodiment 2

[0034] ① Preparation of nano-silica hydrosol: same as Example 1, reaction temperature T=60°C. Nano-SiO 2 The average particle size of the sol is 336nm.

[0035] 2. The pulverization of cellulose pulp: with embodiment 1.

[0036] ③Nano-SiO 2 Mixing of hydrosol and 50% NMMO aqueous solution: same as Example 1.

[0037] ④ Nano SiO 2 Preparation of / cellulose / NMMO aqueous solution: Same as in Example 1, the weight ratio of cellulose pulp to 50% NMMO aqueous solution is 8:100.

[0038] ⑤ Nano SiO 2 / Preparation of spinning dope of Lyocell composite fiber: Same as Example 1.

[0039] ⑥ Nano SiO 2 / Spinning process of Lyocell composite fiber: same as Example 1 to obtain nano-SiO 2 3% nano-SiO 2 / Lyocell composite fiber.

Embodiment 3

[0041] ① Preparation of nano-silver hydrosol: Add 0.005g PVP into 20ml aqueous solution containing 0.005g silver nitrate, stir for 30 minutes; gradually add 10ml 0.03wt% sodium borohydride aqueous solution dropwise, and continue stirring for 30 minutes to obtain nano-silver sol. The average particle size of the obtained nano-silver is 65nm.

[0042] 2. The pulverization of cellulose pulp: with embodiment 1.

[0043] ③ Mixing of nano-silver hydrosol and 50% NMMO aqueous solution: the nano-silver hydrosol and 50% NMMO aqueous solution were mixed at a weight ratio of 0.048:100.

[0044] ④ According to the weight ratio of cellulose pulp and 50% NMMO aqueous solution of 6:100, the pulverized wood pulp cellulose was added to the nano-silver / NMMO aqueous system, and stirred and swelled at room temperature for 6 hours.

[0045] ⑤ Preparation of spinning stock solution of nano silver / Lyocel1 composite fiber: Same as Example 1.

[0046] ⑥Spinning process of nano-silver / Lyocell composi...

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PUM

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Abstract

The invention discloses lyocell fiber containing nano particles and a preparation method thereof. The preparation method includes following steps: mixing hydrosol containing nano particles with a 50% NNMO aqueous solution, adding cellulose wood pulp meal chips being 0.1-0.5 mm in length according to proportion, and performing a traditional lyocell fiber spinning process to obtain the lyocell fiber being 0.2-20% in the content of the nano particles. By means of different addition of nano materials, the lyocell fiber achieves a flame-retarding function, an anti-bacterial function, an ultraviolet-proofing function and the like. The method achieves uniform dispersion of the nano particles in the lyocell fiber, integrates the dewatering processes of the nano particle hydrosol and a lyocell cellulose spinning solution, thereby omitting a pre-treatment process of the nano material, simplifying the spinning process and reducing production cost.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional fibers modified by nanometer materials, and in particular relates to functional Lyocel1 fibers modified by nanometer materials and a preparation method thereof. Background technique [0002] The concept of nanomaterials has been widely concerned by scholars at home and abroad since it was formed in the 1980s. Nanomaterials refer to materials that have at least one dimension in the nanoscale range (1-100nm) or are composed of them as basic units in three-dimensional space. , has a series of novel physical and chemical properties, and has very important application value in many fields, especially in the fields of light, electricity, magnetism, and catalysis. Adding different nanomaterials to polymer materials can make polymers exhibit different properties. For example, silver nanoparticles have excellent broad-spectrum bactericidal properties, are non-toxic, and have no drug res...

Claims

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Application Information

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IPC IPC(8): D01F2/02D01F1/10D01D5/04D01D5/06D01D1/02
Inventor 李树锋宋俊程博闻
Owner TIANJIN POLYTECHNIC UNIV
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