CN208776586U - A kind of scratch-resistant Hydrophobic glass - Google Patents

Abstract

The utility model relates to a kind of scratch-resistant Hydrophobic glasses, including substrate of glass (1), it is characterised in that: have sinter layer (2) and hydrophobic membrane (3) in substrate of glass (1), the sinter layer (2) is by SiO₂First aggregate (4) and SiO₂Second aggregate (5) is constituted, wherein SiO₂The partial size of first aggregate (4) is in 1000 ~ 1600nm, SiO₂The partial size of second aggregate (5) is in 10 ~ 80nm range；The utility model advantage: sinter layer made from 1., stable structure are not easily disconnected from, and can persistently be protected；2.SiO₂First aggregate and the second aggregate act synergistically, and so that hydrophobic film layer is reduced stress, reduce abrasion, improve adhesive force, hinder film layer deformation and movement, effectively prevent hydrophobic film layer from the disengaging of glass surface and the destruction of coarse structure；3. Hydrophobic glass visible light transmittance with higher.

Description

A kind of scratch-resistant Hydrophobic glass

Technical field

The utility model category field of glass production technology, is related to Glass Surface Modification technical field, and in particular to Yi Zhongnai Scrape Hydrophobic glass.

Background technique

Glass surface be it is hydrophilic, water droplet can seriously affect the perspectivity of glass in the adherency of glass surface, adopt at present It solves the above problems used in the method for glass surface coating hydrophobic membrane, hydrophobic membrane is a kind of low-surface-energy material, such material Mutually exclusive with water, water will form a very big contact angle (being greater than 90 °) at the surface of hydrophobic material, be easy to tumble, Low-energy surface energy material is combined with glass surface coarse structure appropriate, can further improve hydrophobic performance.

However, the hydrophobic performance of made hydrophobic membrane can subside quickly under the action of rubbing external force, reason is Hydrophobic material from the disengaging of glass surface and the destruction of coarse structure, such as be used for windshield when, due to scraping for wiper It wipes, the actually active phase is very short, often only several thoughtful some months.Existing many methods improve the antifriction performance of hydrophobic membrane, than Abrasion resistant particles are such as mixed in film layer, but find that adhesive force is poor between abrasion resistant particles and glass in use, and particle is outer in friction It can loosen under power, or even fall off together with hydrophobic membrane；Binding resin is mixed for another example in hydrophobic film layer to increase film layer and glass The binding force of glass, but be used for a long time in outdoor environment, binding resin meeting aging yellowing influences the transparent performance of glass；Also By being applied in combination for above two method, although all extending hydrophobic membrane lifetime to a certain extent, effect is not satisfactory.

Utility model content

It is easy under external force rubbing action that purpose of the utility model is to solve the hydrophobic membranes of existing hydrophobic glass surface The problem of recession, provides a kind of scratch-resistant Hydrophobic glass.

To achieve the goals above, the technical solution adopted in the utility model is as follows:

A kind of scratch-resistant Hydrophobic glass, including existing substrate of glass, it is characterised in that: have on the glass substrate sinter layer and Hydrophobic membrane, the sinter layer is by SiO₂First aggregate and SiO₂Second aggregate is constituted, wherein SiO₂The partial size of first aggregate In 1000 ~ 1600nm, SiO₂The partial size of second aggregate is in 10 ~ 80nm range.

Further, the SiO₂The glass basic surface product and SiO that first aggregate occupies₂The glass that second aggregate occupies The ratio between glass substrate surface product is 1%-5%.

Further, the roughness of the sinter layer is less than 80nm.

Due to SiO₂First aggregation size is larger, forms dimpling starting point in glass surface, makes foreign object and hydrophobic membrane table The physical contact zone area in face reduces, and dimpling starting point carries the most impact force of foreign object, dredging between dimpling starting point Moisture film is solely subjected to fraction frictional force, and since the gross area is larger, therefore the hydrophobic membrane stress of unit area is smaller, keeps wear rate big Big to reduce, even if the hydrophobic membrane on dimpling starting point top is destroyed, film layer integrally remains to keep higher hydrophobic performance for a long time； SiO₂Second aggregate is fixed in substrate of glass, large number of, considerably increases actually connecing for hydrophobic membrane and substrate of glass Contacting surface product, is equivalent to numerous micro- anchor points, plays the role of mechanical anchor to hydrophobic film layer, improve the attachment of film layer and glass Power, and the deformation and movement of hydrophobic film layer under external force can be hindered together with dimpling starting point, so that film layer is not easily disconnected from glass Surface.

The utility model has the advantage that sinter layer made from 1. the utility model, and stable structure will not under external force It is detached from glass surface, persistently protection can be provided hydrophobic membrane；2.SiO₂First aggregate and the second aggregate act synergistically, and make to dredge Water film reduces stress, reduces abrasion, improves adhesive force, film layer deformation and movement is hindered, to effectively prevent Hydrophobic film layer is from the disengaging of glass surface and the destruction of coarse structure；3. by SiO₂First aggregate, SiO₂Second Aggressiveness and Nano-meter SiO_2₂The control of diameter of particle and structure, so that Hydrophobic glass visible light transmittance with higher.

Figure of description

Fig. 1 is a kind of structure diagram of scratch-resistant Hydrophobic glass.

Specific embodiment

In conjunction with Fig. 1, a kind of scratch-resistant Hydrophobic glass, specific implementation step is as follows:

Embodiment 1:

A kind of scratch-resistant Hydrophobic glass, including long 200mm × wide 200mm × thickness 3mm substrate of glass 1 and in glass base Sinter layer 2 and hydrophobic membrane 3 on bottom 1, the sinter layer 2 by partial size 1000 ~ 1600nm SiO₂First aggregate 4 and partial size In the SiO of 10 ~ 80nm₂Second aggregate 5 is constituted, and the roughness of the sinter layer 2 is less than 80nm, SiO₂First aggregate with SiO₂The mass ratio of second aggregate is 15%, SiO₂The glass basic surface product and SiO that first aggregate 4 occupies₂Second reunites The ratio between glass basic surface product that body 5 occupies is 1%-5%.

A kind of preparation method of scratch-resistant Hydrophobic glass, specific implementation step are as follows:

A. by the Nano-meter SiO_2 of partial size 10-25nm₂Powder 18g is added in 1.2L dehydrated alcohol, first high shear agitation 8min, stirring intensity 4000r/min, rear ultrasonic wave stir 12min, and stirring intensity 1500r/min makes SiO₂Aggregate (> 85%) partial size is 1500 ~ 2600nm, and SiO is made₂Alcohol dispersion liquid, then by SiO₂Alcohol dispersion liquid sprays into 1000 DEG C of high temperature Cavity controls the time 30 seconds, makes SiO₂Aggregate volume contraction exports after cooling, obtains the SiO of 1000 ~ 1600nm of partial size₂First Aggregate 14g；

B. by the Nano-meter SiO_2 of partial size 10-25nm₂Powder 100g is added in 6.4 L dehydrated alcohols, adds 4g silane Coupling agent (KH-570, γ-methacryloxypropyl trimethoxy silane), first high shear agitation 15min, stirring intensity For 6000r/min, rear ultrasonic wave stirs 15min, stirring intensity 2000r/min, and the SiO of 10 ~ 80nm Han partial size is made₂Second The dispersion liquid of aggregate；

C. by 14g SiO₂It is obtained containing SiO that first aggregate is added step-wise to step b₂In the dispersion liquid of second aggregate, And 1.1g silane coupling agent (KH-570) is added, side edged high shear agitation 10 min, stirring intensity 5000r/min, after Ultrasonic wave stirs 15min, and stirring intensity 2000r/min makes SiO₂First aggregate and SiO₂Second aggregate simultaneously deposit by stabilization Obtaining SiO₂Mixed dispersion liquid；

D. by SiO made from step c₂Mixed dispersion liquid is evenly applied to substrate glasses surface using spray coating method, and 250 DEG C dry It is spare after dry 8min；

E. substrate glasses of the step d after dry are placed in 5min in 620 DEG C of heating furnace, make SiO₂First aggregate and SiO₂The sintering of second aggregate forms sinter layer in glass surface；

F. the ethanol solution of the perfluoro capryl decane trimethoxy silane (low-surface-energy material) of mass fraction 2% is used Rolling method is coated in the resulting sintering layer surface of step e, is subsequently placed into 80 DEG C of baking oven and is heat-treated 1 hour, solidifies a kind of Scratch-resistant Hydrophobic glass.

Comparative example 1

Perfluoro capryl decane trimethoxy silane is added in the ratio of 2wt% by obtained in 1 step b of embodiment SiO₂In second reunion dispersion liquid, after mixing evenly, it is coated in long 200mm × wide 200mm × thickness 3mm substrate of glass, Then it will be put into 80 DEG C of baking oven and be heat-treated 1 hour, be then placed in 80 DEG C of baking oven and be heat-treated 1 hour, after solidification, obtain thin Waterglass.

In Hydrophobic glass obtained, SiO₂Second aggregate serves as abrasion resistant particles, and makes second group of glass and first group of glass Glass has similar surface roughness.

Comparative example 2

The ethanol solution of the decane trimethoxy silane of perfluoro capryl containing 2wt% is applied directly to long 200mm × wide 200mm In the substrate of glass of × thickness 3mm, it is then placed in 80 DEG C of baking oven and is heat-treated 1 hour, to get Hydrophobic glass after solidification.

Hydrophobic glass obtained does not have abrasion resistant particles and surface roughness.

Scraping experiment:

Under the conditions of simulation drenches with rain, scraping experiment is carried out to three groups of Hydrophobic glasses with wiper, wiper speed: 50 times past Multiple/minute, scraping time: continuous 8 hours.Three groups of glass are tested in test front and back, the result is as follows:

Test result is shown:

1) before testing, first group of glass and second group of glass display ultra-hydrophobicity, third group glass display are generally hydrophobic Performance.

First group of glass and second group of glass have certain surface roughness, so after modification low-surface-energy material, it is quiet State water contact angle is greater than 150 °, ultra-hydrophobicity is shown, and since roughness is similar, so water contact angle is close；Third group glass Glass surface does not have roughness, so Static water contact angles show as the water contact angle of perfluoro capryl decane trimethoxy silane.

2) after testing, the Static water contact angles variation of first group of glass less, is still greater than 150 °, still keeps super-hydrophobicity Energy；

The Static water contact angles of second group of glass are subsided, and have been lower than 150 °, but be greater than 90 °, and ultra-hydrophobicity is lost, Still there is general hydrophobic performance；

The Static water contact angles of third group glass subside significantly, less than 90 °, have completely lost hydrophobic performance.

3) transmitance of the three groups of glass in test front and back is close and variation is smaller.

Test result shows that the resulting Hydrophobic glass of the utility model has scratch resistance and high transparency, possesses long-acting Hydrophobic effect.

Claims (3)

1. a kind of scratch-resistant Hydrophobic glass, including existing substrate of glass (1), it is characterised in that: have sintering on substrate of glass (1) Layer (2) and hydrophobic membrane (3), the sinter layer (2) is by SiO₂First aggregate (4) and SiO₂Second aggregate (5) is constituted, wherein SiO₂The partial size of first aggregate (4) is in 1000 ~ 1600nm, SiO₂The partial size of second aggregate (5) is in 10 ~ 80nm range.

2. a kind of scratch-resistant Hydrophobic glass according to claim 1, it is characterised in that: the SiO₂First aggregate (4) occupies Glass basic surface product and SiO₂The ratio between glass basic surface product that second aggregate (5) occupies is 1%-5%.

3. a kind of scratch-resistant Hydrophobic glass according to claim 1, it is characterised in that: the roughness of the sinter layer (2) is small In 80nm.