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Preparing method for titanium dioxide fibre

A titanium dioxide and fiber technology, applied in the field of functional fiber materials, can solve the problems of complex spinning solution preparation process, harsh reaction conditions, expensive raw materials, etc., and achieve the effects of high strength, reduced synthesis cost, and high specific surface area

Inactive Publication Date: 2005-02-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this invention has made great progress compared with the previous technology, there are still problems such as complicated spinning solution preparation process, harsh reaction conditions, expensive raw materials, and long reaction time.

Method used

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  • Preparing method for titanium dioxide fibre
  • Preparing method for titanium dioxide fibre
  • Preparing method for titanium dioxide fibre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Embodiment 1: the preparation method of titanium dioxide short fiber, the steps are as follows:

[0046] (1) According to the ratio of titanium tetrachloride: distilled water: acetylacetone: triethylamine=1mol: 3mol: 1mol: 4mol, measure 40.0ml, 20.0ml, 37.3ml and 40.0ml of the above four liquid reagents (analytical pure) respectively. 202.1ml, and according to the relationship that the dilution factor of titanium tetrachloride is 5 times, the dilution factor of distilled water is 5 times, the dilution factor of acetylacetone is 3 times, and the dilution factor of triethylamine is 3 times. Reagents were diluted in 200.0ml, 100.0ml, 112.0ml and 606.5ml of four parts of methanol, under the condition of stirring and 10°C, the methanol dilution of distilled water was added dropwise to the methanol dilution of titanium tetrachloride, and the dropwise Then continue to stir for 20 minutes to obtain the mixed diluent A, and at the same time directly mix the methanol diluents of a...

Embodiment 2

[0050] Embodiment 2: the preparation method of titanium dioxide continuous fiber

[0051] As described in Example 1, the difference is that the viscosity of the spinning solution in step (2) is adjusted to 80 Pa·s (20°C), and dry spinning is used in step (3) to obtain continuous precursor fibers, that is, to spin The silk liquid is moved into the liquid material tank in the dry spinning device, vacuum defoamed for 10 minutes, and the temperature is 10 °C and the relative humidity is 20%, and the pressure of 1.0 MPa is applied to the spinning liquid by means of cylinder nitrogen, so that It is sprayed from a niobium-tantalum alloy spinning plate with a hole diameter of 0.10 mm, and is drawn and drum-wrapped to obtain transparent and orderly continuous precursor long fibers with almost arbitrary lengths. In step (4), the continuous The precursor fiber is placed in a program-controlled furnace, subjected to 80°C-600°C atmospheric pressure water vapor heat treatment for 24 hours, ...

Embodiment 3

[0052] Embodiment 3: the preparation method of titanium dioxide short fiber

[0053] As described in Example 1, the difference is that the ratio of titanium tetrachloride: distilled water: acetylacetone: triethylamine in step (1) is changed to 1mol: 4.5mol: 1.3mol: 4mol, that is, measure the above four kinds of Liquid reagents (analytical pure) are 40.0ml, 30.0ml, 48.5ml and 202.1ml, and the dilution factor of titanium tetrachloride is 4 times, the dilution factor of distilled water is 4 times, and the dilution factor of acetylacetone is 2.5 times. The dilution factor of ethylamine is 3 times. Dilute each of the above four reagents into four parts of methanol of 160.0ml, 120.0ml, 121.3ml and 606.5ml respectively. Add dropwise to the methanol dilution of titanium tetrachloride, continue to stir for 15 minutes after the drop is complete, to obtain a mixed dilution A, and at the same time directly mix the methanol dilutions of acetylacetone and triethylamine to obtain a mixed dil...

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Abstract

The producing method of two-oxidation titanium fibre belongs to function fibre material technology scopes. Compose poly-acetamide acetone titanium to be the van-substance. Let chemic dosage of four-chloridize titanium, distilled water, acetamide acetone and three-ethylamine dilute in methanol respectively. Mix them and react when mixing round at 0-25 deg.C. Compose poly-acetyl acet, titanium. Remove hydrochloric three-ethylamine by using four-hydrogen furan. Dissolve poly-acetyl acet, titanium in methanol to make filature liquid. Obtain van-substance short fibre by using acentric swing method. Obtain van-substance long fibre by using dry filature method. And we can obtain two-oxidation titanium fibre by using high pressure or normal pressure vapor heat treatment technique agglomeration. The intension of extend of this invention is 100 MPa-1.2GPa. The diameter is 3um-20um. The one-thread series length is 1 cm-50 cm or higher than 1 m. The crystal diameter is 5 nm-100 nm. The appearance is two-oxide ation short fibre or consecutive fibre with titanium droff-titanium-mine posture or rutile posture or coexistence.

Description

(1) Technical field [0001] The invention relates to a method for preparing functional semiconductor oxide fibers, in particular to a method for preparing titanium dioxide fibers with photocatalytic and bactericidal properties, and belongs to the field of functional fiber materials. (2) Background technology [0002] Due to the global energy crisis and the increasing environmental pollution in the last century, environmental issues have received widespread attention. TiO 2 , ZnO, GdS, WO 3 , Fe 2 o 3 Semiconductor photocatalytic technologies such as semiconductors are favored by many researchers because they can directly use light energy to solve environmental pollution problems. [0003] Since Fujishima et al. discovered in 1972 that illuminated titanium dioxide semiconductor electrodes have the function of splitting water, especially in 1976, Cary et al. successively reported that titanium dioxide-water systems can degrade various refractory organic compounds under ultr...

Claims

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Application Information

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IPC IPC(8): D01F9/08
Inventor 刘和义许东包南赵相金侯宪钦王彦玲杜伟张光辉王新强吕孟凯袁多荣
Owner SHANDONG UNIV
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