CN103728736A

CN103728736A - Anti-fog self-cleaning lens and preparation method thereof

Info

Publication number: CN103728736A
Application number: CN201310749236.0A
Authority: CN
Inventors: 姚红兵; 郑学良; 平洁; 佟艳群; 李亚茹; 高原; 于文龙; 马桂殿; 曾祥波; 沈宝国; 于存胜; 张永康
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-04-16
Anticipated expiration: 2033-12-31
Also published as: CN103728736B

Abstract

The invention discloses an anti-fog self-cleaning lens and a preparation method thereof. Columnar structures are evenly arranged on the surface of the lens, and the columnar structures are composed of columns with a diameter of 10-15 microns and a spacing of 20-30 microns; the surface of the columnar structures is uniform The distribution of granular alkylketene dimers forms nanostructures. This method forms a columnar structure on the surface of the lens through laser micromachining, and combines the alkyl ketene dimer to form a nanostructure, so that the water droplets form a contact angle greater than 140 degrees on the surface of the lens, so that the water droplets cannot stand, and better prevent The formation of fog on the lens surface. Thereby providing clearer and more stable eyesight for the wearer of glasses, which greatly facilitates the daily life of the wearer of glasses. Once the structure is formed, there is no need to repeatedly add anti-fogging agents and other additional measures, and it can be used for a long time.

Description

A kind of antifogging self-cleaning eyeglass and preparation method thereof

Technical field

The present invention relates to eyeglass and manufacture field and Laser Micro-Machining field, refer in particular to a kind of preparation method of antifogging self-cleaning eyeglass.

Background technology

In daily life, fog is ubiquitous, the application of Anti-fog glasses is also more and more extensive, and common people with glasses, doctor, driver, swimmer and deep sea diving operating personnel need to use, so produced the multiple application of fog-proof lens, anti-fogging laryngoscope, Anti-mist mask etc.

The fog-proof lens occurring is the earliest mainly a circle insulating collar is set between two-layer eyeglass and is glued, by this insulating collar, between two-layer eyeglass, formed an insulated chamber, this insulated chamber is pumped into vacuum, to intercept the conduction of most of heat energy, but such fog-proof lens is extremely thick and heavy and not attractive in appearance, is not suitable for ordinary consumer and wears.Then occurred again a kind of fog-proof lens of realizing by plated film, but this eyeglass is easily subject to being infected with of molecule, and the temperature difference is when larger, can not eliminate fast fog.The new fog-proof lens occurring recently is also realized by plated film, its requires in temperature is the vacuum coating cabin of 60 degrees Celsius to 90 degrees Celsius, adopt ion bombardment that the potpourri of zirconia, zinc paste is plated on behind antireflection film layer surface, the potpourri of sodium fluoride, potassium chloride, magnesium fluoride is covered in compound antireflection film layer by vacuum evaporation equably from dosing hole, forms the antifog rete of nanoscale.The anti-fog effect of this fog-proof lens increases, but in its manufacturing process, environment, technology etc. require too highly, be difficult for to form industrialization.

Summary of the invention

The object of this invention is to provide a kind of by the micro-processing of lens surface is there is to the antifogging self-cleaning eyeglass of the imitative lotus leaf micro-nano surface structure of ultra-hydrophobicity with acquisition.

Another object of the present invention is to provide the preparation method of antifogging self-cleaning eyeglass.

Technical scheme of the present invention is: a kind of antifogging self-cleaning eyeglass, and the evenly distributed column structure of lens surface, described column structure is that 10-15 micron, spacing are that the cylinder of 20-30 micron forms by diameter; The alkyl ketene dimer of institute's column structure surface uniform distributed granule shape forms nanostructured.

Further, the particle scale of described granular alkyl ketene dimer is 130 nm, and described height of column is 60-70 micron.

Further, the high Hr=height of column/intercolumniation of the phase coupled columns of described cylinder, 2≤Hr≤3.5, the wide Ar=column diameter/intercolumniation of phase coupled columns of described cylinder, 0.33≤Ar≤0.75, described columnar structured material is coarse than Mr=column diameter/height of column,

0.14≤Mr≤0.25。

Another technical scheme of the present invention is: a kind of preparation method of antifogging self-cleaning eyeglass, comprises the following steps:

1) Ultrasonic Cleaning will be carried out after substrate coating;

2) with laser stepper, lens surface is carried out to Laser Micro-Machining and obtain micron-sized lens surface structure;

3) by purity 98% and above alkyl ketene dimer be heated to 90 ° of C and more than;

4) by step 2) gained eyeglass invades in the liquid of alkyl ketene dimer of step 3) gained after 10-20 minute, cooling fast with nitrogen.

Advantage of the present invention is: this structure makes the globule at lens surface, form the contact angle that is greater than 140 degree, and water droplet cannot be based oneself upon, and has better stoped the formation of fog at lens surface.Thereby for people with glasses provides more clear, stable eyesight, facilitated greatly the person's of getting the right lensses for one's eyeglasses daily life.Once this structure forms, and by without repeatedly adding the additional measures such as antifoggant, can use lastingly.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described.

Fig. 1 is the micron order column structure figure of minute surface;

Fig. 2 is that the globule is at the schematic diagram of lens surface;

Fig. 3 is eyeglass preparation flow figure;

1 lens surface, 2 column structures, 3 mattress, 4 contact angles.

Embodiment

As shown in Figure 1-2, by Laser Micro-Machining, lens surface 1 is carried out to micro-processing, obtain the minute surface with evenly distributed column structure 2, the diameter 10-15 micron of its cylinder, spacing 20-30 micron, high about 60-70 micron, be mattress 3 between cylinder.Then by microstructure, in conjunction with alkyl ketene dimer (AKD), process and build one deck nanostructured, AKD is graininess and is evenly distributed on through on micro-machined surface, particle scale, in 130 nm left and right, makes eyeglass form the super-hydrophobic minute surface of imitative lotus leaf that contact angle 4 is greater than 140 degree.Column structure 2 has larger phase coupled columns high (Hr=2), can guarantee compound wetting state and less phase coupled columns wide (0.33≤Ar≤0.75), can obtain the contact angle that is no less than 140 degree.And in cylindrical recesses, form one deck mattress 3, further reduce the contact area of the globule and minute surface.The characteristic dimension of column structure can obtain the coarse ratio of large material 0.14≤Mr≤0.25 of trying one's best on the basis that guarantees contact angle, guarantees the mechanical endurance of surface structure.

The preparation method of the eyeglass in the present invention is as shown in Figure 3:

1) first Ultrasonic Cleaning will be carried out after substrate coating.

2) then laser stepper carries out Laser Micro-Machining to lens surface and obtains micron-sized lens surface structure, obtains and has evenly distributed column matrix from the teeth outwards, and these column structure diameters are 10-15 micron, the about 20-30 micron of spacing.

3) finally by microstructure, in conjunction with alkyl ketene dimer (AKD), process and build one deck nanostructured, concrete grammar is as follows: by AKD, (purity is more than 98%, otherwise need purifying) be heated to 90 ° and make above its fusing, again the eyeglass that needs hydrophobization is immersed to about 10-20 minute, cooling fast with nitrogen after taking-up.AKD can be graininess and is evenly distributed on through on micro-machined surface like this, and particle scale, in 130-140 nm left and right, makes lens surface form the super-hydrophobic minute surface of imitative lotus leaf that contact angle is greater than 140 degree.

Claims

1. An anti-fog self-cleaning lens is characterized in that columnar structures are evenly arranged on the surface of the lens, and the columnar structures are composed of cylinders with a diameter of 10-15 microns and a spacing of 20-30 microns; the surface of the columnar structures is evenly distributed Particulate alkylketene dimers form nanostructures.

2. The anti-fog self-cleaning lens according to claim 1, characterized in that, the particle size of the granular alkyl ketene dimer is 130 nm.

3. The anti-fog self-cleaning lens according to claim 1, characterized in that, the height of the cylinder is 60-70 microns.

4. An anti-fog self-cleaning lens according to claim 1, characterized in that, the relative column height of the column is 2≤Hr≤3.5, the relative column width of the column is 0.33≤Ar≤0.75, the The roughness ratio of the columnar structure material is 0.14≤Mr≤0.25.

5. The preparation method of a kind of anti-fog self-cleaning lens according to claim 1, is characterized in that comprising the following steps:

1) Ultrasonic cleaning is performed after coating the substrate;

2) Use a laser lithography machine to perform laser microprocessing on the surface of the lens to obtain a micron-level lens surface structure;

3) Heating the alkyl ketene dimer with a purity of 98% or above to 90°C or above;

4) Invade the lens obtained in step 2) into the alkyl ketene dimer liquid obtained in step 3) for 10-20 minutes, and then quickly cool it with nitrogen.