阅读说明：本技术 一种纺丝法制备纳米材料 (A kind of spin processes preparation nano material ) 是由 李志彬 于 2019-07-22 设计创作，主要内容包括：本发明属于纳米材料领域,具体涉及一种纺丝法制备纳米材料,包括如下步骤：将钛酸丁酯加入至无水乙酸中,然后加入羟丙基纤维素搅拌均匀,得到分散的钛基分散液；将蒸馏水缓慢滴加至钛基分散液中低温搅拌30-60min,得到混合钛液；将黄原胶加入至混合钛液中低温超声分散2-4h,然后加入反应釜中梯度减压蒸馏,得到粘稠液；将粘稠液低温静电纺丝得到纤维膜；将纤维膜平铺在电阻平板上,在富阳环境下通电反应3-5h,然后采用无水乙醇冲洗后,烘干得到纳米二氧化钛。本发明解决了现有纳米材料团聚严重,粒径分布不均的问题,利用静电纺丝将纳米材料的包裹材料均匀分散,通过电烧结的方式将包裹材料去除,得到分散性纳米二氧化钛。(The invention belongs to field of nanometer material technology, and in particular to a kind of spin processes preparation nano material includes the following steps: for butyl titanate to be added into anhydrous acetic acid, hydroxypropyl cellulose is then added and stirs evenly, the titanium-based dispersion liquid dispersed；Low temperature stirring 30-60min is slowly added dropwise into titanium-based dispersion liquid in distilled water, obtains mixed with titanium liquid；Low temperature ultrasonic dispersion 2-4h is added into mixed with titanium liquid in xanthan gum, gradient vacuum distillation in reaction kettle is then added, obtains viscous fluid；Viscous fluid low temperature electrostatic spinning is obtained into tunica fibrosa；Tunica fibrosa is laid on resistance plate, be powered reaction 3-5h under the environment of Fuyang, and after then being rinsed using dehydrated alcohol, drying obtains nano-titanium dioxide.The present invention solves existing nano material and reunites seriously, and the problem of particle diameter distribution unevenness is evenly dispersed by the lapping of nano material using electrostatic spinning, removes lapping by way of electricity sintering, obtains dispersed nano-titanium dioxide.)

1. a kind of spin processes prepare nano material, characterized by the following steps:

Step 1, butyl titanate is added into anhydrous acetic acid, hydroxypropyl cellulose is then added and stirs evenly, is dispersed Titanium-based dispersion liquid；

Step 2, low temperature stirring 30-60min is slowly added dropwise into titanium-based dispersion liquid in distilled water, obtains mixed with titanium liquid；

Step 3, low temperature ultrasonic dispersion 2-4h is added into mixed with titanium liquid in xanthan gum, gradient decompression in reaction kettle is then added and steams It evaporates, obtains viscous fluid；

Step 4, viscous fluid low temperature electrostatic spinning is obtained into tunica fibrosa；

Step 5, tunica fibrosa is laid on resistance plate, be powered reaction 3-5h under the environment of Fuyang, then uses dehydrated alcohol After flushing, drying obtains nano-titanium dioxide.

2. spin processes according to claim 1 prepare nano material, it is characterised in that: the butyl titanate in the step 1 Mass ratio with anhydrous acetic acid is 2:3-7, and the additional amount of the hydroxypropyl cellulose is the 30-50% of butyl titanate quality, is stirred Mixing speed is 1000-2000r/min.

3. spin processes according to claim 1 prepare nano material, it is characterised in that: distilled water in the step 2 Addition speed is 3-6mL/min, and the additional amount of distilled water is the 20-25% of butyl titanate quality, and the temperature of low temperature stirring is 2-4 DEG C, mixing speed 1000-1800r/min.

4. spin processes according to claim 1 prepare nano material, it is characterised in that: xanthan gum in the step 3 Additional amount is the 300-500% of butyl titanate quality, and the temperature of low temperature ultrasonic dispersion is 5-10 DEG C, supersonic frequency 40- 60kHz。

5. spin processes according to claim 1 prepare nano material, it is characterised in that: the gradient decompression in the step 3 Distillation sequence is as follows:

The ratio of pressure and atmospheric pressure Temperature Time 80-90% 80-90℃ 20-30min 80-90% 100-110℃ 30-60min 70-80% 120-125℃ 30-60min

。

6. spin processes according to claim 1 prepare nano material, it is characterised in that: low temperature electrostatic is spun in the step 4 The temperature of silk is 2-5 DEG C, voltage 5-10kV, and push distance is 10-35cm.

7. spin processes according to claim 1 prepare nano material, it is characterised in that: the resistance plate in the step 5 Both ends connect power positive cathode, and the electric current for the reaction that is powered is 0.3-1.5A, and the oxygen content of Fuyang environment is 35-40%, the baking Dry temperature is 80-100 DEG C.

Technical field

The invention belongs to field of nanometer material technology, and in particular to a kind of spin processes preparation nano material.

Background technique

Nano-particle material is also known as ultrafine particle material, is made of nanoparticle (nano particle).Nanoparticle Also it is ultramicro powder, generally refers to particle of the size between 1~100nm, is to be in the transition that cluster and macro object have a common boundary Region, from the usual micro and macro perspectives, both atypical microscopic system is also atypical macro for such system Sight system is a kind of typical Mesoscopic structure, it has skin effect, small-size effect and macro quanta tunnel effect.Work as people Macro object is subdivided into ultramicro powder (nanoscale) after, it would indicate that many unusual characteristics, i.e. its optics, heat Significant difference will be had by comparing when, electricity, magnetics, the property of mechanics and chemical aspect are with bulk solid.

The preparation method of existing nano material, such as traditional solid phase reaction and sintering process and modern chemical vapor deposition Method, physical vaporous deposition, chemical vapor infiltration, sol-gel processing etc., the nano material of this method preparation, which exists, reunites Seriously, the non-uniform problem of particle diameter distribution.

Summary of the invention

For the problems of the prior art, the present invention provides a kind of spin processes preparation nano material, solves existing nanometer Material is reunited seriously, and the problem of particle diameter distribution unevenness is evenly dispersed by the lapping of nano material using electrostatic spinning, passes through The mode of electricity sintering removes lapping, obtains dispersed nano-titanium dioxide.

To realize the above technical purpose, the technical scheme is that

A kind of spin processes preparation nano material, includes the following steps:

Step 1, butyl titanate is added into anhydrous acetic acid, hydroxypropyl cellulose is then added and stirs evenly, is divided Scattered titanium-based dispersion liquid；

Step 2, low temperature stirring 30-60min is slowly added dropwise into titanium-based dispersion liquid in distilled water, obtains mixed with titanium liquid；

Step 3, low temperature ultrasonic dispersion 2-4h is added into mixed with titanium liquid in xanthan gum, gradient in reaction kettle is then added and subtracts Pressure distillation, obtains viscous fluid；

Step 4, viscous fluid low temperature electrostatic spinning is obtained into tunica fibrosa；

Step 5, tunica fibrosa is laid on resistance plate, be powered reaction 3-5h under the environment of Fuyang, then using anhydrous After ethyl alcohol rinses, drying obtains nano-titanium dioxide.

The mass ratio of butyl titanate and anhydrous acetic acid in the step 1 is 2:3-7, the addition of the hydroxypropyl cellulose Amount is the 30-50% of butyl titanate quality, mixing speed 1000-2000r/min.

The addition speed of distilled water in the step 2 is 3-6mL/min, and the additional amount of distilled water is butyl titanate quality 20-25%, low temperature stirring temperature be 2-4 DEG C, mixing speed 1000-1800r/min.

The additional amount of xanthan gum in the step 3 is the 300-500% of butyl titanate quality, the temperature of low temperature ultrasonic dispersion Degree is 5-10 DEG C, supersonic frequency 40-60kHz.

Gradient vacuum distillation program in the step 3 is as follows:

The ratio of pressure and atmospheric pressure	Temperature	Time
			80-90%	80-90℃	20-30min
80-90%	100-110℃	30-60min
			70-80%	120-125℃	30-60min

。

The temperature of low temperature electrostatic spinning is 2-5 DEG C, voltage 5-10kV in the step 4, and push distance is 10-35cm.

Resistance plate both ends in the step 5 connect power positive cathode, and the electric current for the reaction that is powered is 0.3-1.5A, Fuyang The oxygen content of environment is 35-40%, and the temperature of the drying is 80-100 DEG C.

Butyl titanate is added step 1 dissolves into anhydrous acetic acid, and hydroxypropyl cellulose is then added and stirs evenly, It can be evenly dispersed into anhydrous acetic acid by butyl titanate.

Low temperature stirring is added into titanium-based dispersion liquid in distilled water by step 2, it can be ensured that butyl titanate is formed with distilled water Hydrolysis, while the mode of low temperature stirring reduces the activity of butyl titanate, hydroxypropyl cellulose forms dispersing agent in water Effect, the metatitanic acid hydrolyzed to form is evenly dispersed, prevent the agglomeration traits of metatitanic acid.

Xanthan gum is added into mixed with titanium liquid step 3, and the dissolubility based on xanthan gum in water can guarantee xanthan gum Expansion is formed, the mode of low temperature ultrasonic dispersion breaks the toughness of xanthan gum using high-frequency vibration, and metatitanic acid is evenly dispersed extremely Hydroxypropyl cellulose in xanthan gum, and at this time is wrapped in metatitanic acid surface；Gradient decompression mode by distilled water, butyl acetate and Acetic acid tentatively removes, and it is thick to reach solution.

Viscous fluid low temperature electrostatic spinning is obtained nanofiber spinning by step 4, at this point, using metatitanic acid as kernel in fiber filament, It is successively wrapped up by hydroxypropyl cellulose and xanthan gum, while metatitanic acid is dispersed in fiber filament.

Tunica fibrosa is laid on resistance plate by step 5, is formed by resistance plate in the process to electric heating effect, will be fine The xanthan gum and hydroxy propyl cellulose biscuit firing tieed up in film form titanium dioxide and water, and form nanometer as the metatitanic acid dehydration of kernel Titanium dioxide, and it is converted into anatase titanium dioxide particle, because the interval between nano-titanium dioxide is larger, reunion can not be formed, therefore is deposited In resistance planar surface；It is rinsed, nano-titanium dioxide is separated from resistance plate, drying obtains nano-silica using dehydrated alcohol Change titanium.

From the above, it can be seen that the present invention has following advantages:

Reunite seriously 1. the present invention solves existing nano material, the problem of particle diameter distribution unevenness will using electrostatic spinning The lapping of nano material is evenly dispersed, removes lapping by way of electricity sintering, obtains dispersed nano-silica Change titanium.

2. the present invention utilizes the suspended and water solubility of xanthan gum, thermoplasticity and the film forming for being aided with hydroxypropyl cellulose are special Property, nano-titanium dioxide can be wrapped up, solve the agglomeration traits of nanoparticle.

Specific embodiment

The present invention will be described in detail in conjunction with the embodiments, but does not do any restriction to claim of the invention.