阅读说明：本技术 一种纳米氧化铟锡超隔热pvb中间膜材料及其制备方法 (Nano Indium Tin Oxide (ITO) super-heat-insulation polyvinyl butyral (PVB) intermediate film material and preparation method thereof ) 是由 郑庆阳 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种纳米氧化铟锡超隔热PVB中间膜材料,其纳米氧化铟锡超隔热PVB中间膜材料的原料组成为：In2O3：50％；SnO2：5％；n-ITO：45％；PVB树脂粉：60-100份；增塑剂：25-40份；抗氧剂：0.3-0.5份；纳米级的隔热微粒浆料：0.2-0.9份；紫外线吸收剂：0.1-1份。本发明通过采用了n-ITO超微小粒径不但能够增强可见光透光率,同時增加红外线阻隔能力而不影响夹胶中间膜的厚度,且n-ITO是一種纳米级材料,远比其他市面上的ITO颗粒更加小,能更有效地吸收在800至2500nm范围内的红外线,特别在远红外线区域中具有强大的阻隔能力。(The invention discloses a nano indium tin oxide super-heat-insulation PVB intermediate film material, which comprises the following raw materials: in2O 3: 50 percent; SnO 2: 5 percent; n-ITO: 45 percent; PVB resin powder: 60-100 parts; plasticizer: 25-40 parts; antioxidant: 0.3-0.5 part; nano-scale insulating particulate slurry: 0.2-0.9 part; ultraviolet absorber: 0.1-1 part. The invention adopts the n-ITO ultrafine particle size, which not only can enhance the visible light transmittance, but also can increase the infrared ray blocking capability without influencing the thickness of the sandwiched intermediate film, and the n-ITO is a nanoscale material which is much smaller than other ITO particles on the market, can more effectively absorb infrared rays in the range of 800-2500 nm, and particularly has strong blocking capability in a far infrared ray region.)

1. A nanometer indium tin oxide super heat insulation PVB intermediate film material is characterized in that: the nano indium tin oxide super-heat-insulation PVB intermediate film material comprises the following raw materials:

In2O3：50％；

SnO2：5％；

n-ITO：45％；

PVB resin powder: 60-100 parts;

plasticizer: 25-40 parts;

antioxidant: 0.3-0.5 part;

nano-scale insulating particulate slurry: 0.2-0.9 part;

ultraviolet absorber: 0.1-1 part.

2. The nano Indium Tin Oxide (ITO) super-insulating PVB intermediate film material as claimed in claim 1, wherein: the average grain diameter of the n-ITO is less than 10nm, and the concentration content of the n-ITO is more than 40 wt%.

3. The nano Indium Tin Oxide (ITO) super-insulating PVB intermediate film material as claimed in claim 1, wherein: the antioxidant is selected from one or more of pentaerythritol ester, n-octadecyl propionate, phosphite ester and dioctadecyl alcohol pentaerythritol diphosphite ester.

4. A preparation method of a nanometer Indium Tin Oxide (ITO) super-heat-insulation PVB intermediate film is characterized by comprising the following steps: the preparation method comprises the following steps:

s1, firstly, weighing the components In the corresponding proportion according to the weight parts of the components, namely In2O3, SnO2, n-ITO, PVB resin powder, a plasticizer, an antioxidant, nano-scale heat insulation particle slurry and an ultraviolet absorbent for later use;

s2, dissolving weighed and proportioned In2O3, SnO2, n-ITO, PVB resin powder, an ultraviolet absorbent and an antioxidant In a plasticizer to form a mixed solution, adding a modification auxiliary agent into the mixed solution, standing the mixed solution for reaction for 4-6 hours, putting the mixed solution into a double-screw extruder after the reaction is complete, directly injecting the prepared nano-scale heat insulation particle slurry into a barrel of the extruder by using a metering pump, extruding and uniformly mixing with the PVB resin powder, and pumping out excessive water vapor by using a vacuum pump In the extrusion process to obtain a rough intermediate film slurry;

s3, guiding the prepared rough slurry into a hopper of a casting machine, scraping and coating the rough slurry on a special base belt by a scraper in the casting machine according to a certain thickness, drying and curing the rough slurry, peeling the rough slurry from the upper surface of the base belt to form an intermediate film of the green belt, and performing processing treatments such as punching, laminating and the like on the green belt according to the size and the shape of a finished product to prepare a finished product of the intermediate film of the blank to be sintered;

and S4, finally, conveying the blank intermediate film finished product into sintering equipment for sintering processing, so that the structural particles of the intermediate film can be bonded more firmly, the overall strength of the intermediate film finished product is increased, and then cleaning, dedusting and sterilizing by adopting a small amount of acid-alkali solution mixed water.

5. The method for preparing a nano Indium Tin Oxide (ITO) super-insulating PVB intermediate film material as claimed in claim 4, wherein: the temperature during the drying and curing process during the film forming process of the casting machine should be controlled between 20 and 40 ℃, and the time for drying and curing should be controlled between 5 and 10 minutes.

6. The method for preparing a nano Indium Tin Oxide (ITO) super-insulating PVB intermediate film material as claimed in claim 4, wherein: the temperature in the sintering process should be the same as that in the tape casting process, and the acid-base concentration in the mixed water should be controlled between 1% and 5% during cleaning.

Technical Field

The invention relates to the technical field of PVB intermediate films, in particular to a nano indium tin oxide super-heat-insulation PVB intermediate film material and a preparation method thereof.

Background

The PVB intermediate film is a semitransparent film, is mainly used for laminated glass, and is special glass formed by sandwiching a layer of PVB film between two pieces of glass, compounding under high pressure and heating. The PVB laminated glass has multiple functions of safety, heat preservation, noise control, ultraviolet isolation and the like, is widely applied to industries such as buildings, automobiles, photovoltaics and the like, and the PVB intermediate film produced by adopting the special formula also has wide application in the fields of aerospace, military, high and new technology industry and the like, such as airplanes, spacecrafts, military instruments, solar cells, solar receivers and the like.

However, in the daily use process of the conventional PVB interlayer, the transmittance of visible light is poor, the thickness of the laminated interlayer is thick, ITO particles in the interlayer are large, infrared rays in the range of 800 to 2500nm cannot be effectively absorbed, and the barrier capability for far infrared rays is weak particularly in the far infrared ray region.

Disclosure of Invention

The invention aims to provide a nano Indium Tin Oxide (ITO) super-heat-insulation PVB intermediate film material and a preparation method thereof, and aims to solve the problems that the traditional PVB intermediate film proposed in the background art has poor light transmittance for visible light, thick thickness of an adhesive intermediate film and large ITO (indium tin oxide) particles in the intermediate film, cannot effectively absorb infrared rays in the range of 800-2500 nm and is poor in far infrared ray blocking capacity particularly in a far infrared ray region in the daily use process.

In order to achieve the purpose, the invention provides the following technical scheme: a nanometer indium tin oxide super heat insulation PVB intermediate film material comprises the following raw materials:

In2O3：50％；

SnO2：5％；

n-ITO：45％；

PVB resin powder: 60-100 parts;

plasticizer: 25-40 parts;

antioxidant: 0.3-0.5 part;

nano-scale insulating particulate slurry: 0.2-0.9 part;

ultraviolet absorber: 0.1-1 part.

Preferably, the average grain diameter of the n-ITO is less than 10nm, and the concentration content of the n-ITO is more than 40 wt%.

Preferably, the antioxidant is selected from one or more of pentaerythritol ester, n-octadecyl propionate, phosphite ester and dioctadecyl alcohol pentaerythritol diphosphite ester.

A preparation method of a nano Indium Tin Oxide (ITO) super-heat-insulation PVB intermediate film comprises the following steps:

s1, firstly, weighing the components In the corresponding proportion according to the weight parts of the components, namely In2O3, SnO2, n-ITO, PVB resin powder, a plasticizer, an antioxidant, nano-scale heat insulation particle slurry and an ultraviolet absorbent for later use;

s2, dissolving weighed and proportioned In2O3, SnO2, n-ITO, PVB resin powder, an ultraviolet absorbent and an antioxidant In a plasticizer to form a mixed solution, adding a modification auxiliary agent into the mixed solution, standing the mixed solution for reaction for 4-6 hours, putting the mixed solution into a double-screw extruder after the reaction is complete, directly injecting the prepared nano-scale heat insulation particle slurry into a barrel of the extruder by using a metering pump, extruding and uniformly mixing with the PVB resin powder, and pumping out excessive water vapor by using a vacuum pump In the extrusion process to obtain a rough intermediate film slurry;

s3, guiding the prepared rough slurry into a hopper of a casting machine, scraping and coating the rough slurry on a special base belt by a scraper in the casting machine according to a certain thickness, drying and curing the rough slurry, peeling the rough slurry from the upper surface of the base belt to form an intermediate film of the green belt, and performing processing treatments such as punching, laminating and the like on the green belt according to the size and the shape of a finished product to prepare a finished product of the intermediate film of the blank to be sintered;

and S4, finally, conveying the blank intermediate film finished product into sintering equipment for sintering processing, so that the structural particles of the intermediate film can be bonded more firmly, the overall strength of the intermediate film finished product is increased, and then cleaning, dedusting and sterilizing by adopting a small amount of acid-alkali solution mixed water.

Preferably, the temperature during the drying and curing process during the film forming process of the casting machine should be controlled between 20 and 40 ℃, and the time for drying and curing should be controlled between 5 and 10 minutes.

Preferably, the temperature during sintering process should be the same as the temperature during casting process, and the acid-base concentration in the mixed water during cleaning should be controlled between 1% and 5%.

Compared with the prior art, the invention has the beneficial effects that: the invention adopts the n-ITO ultrafine particle size, which not only can enhance the visible light transmittance, but also can increase the infrared ray blocking capability without influencing the thickness of the sandwiched intermediate film, and the n-ITO is a nanoscale material which is much smaller than other ITO particles on the market, can more effectively absorb infrared rays in the range of 800-2500 nm, and particularly has strong blocking capability in a far infrared ray region.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a nanometer indium tin oxide super heat insulation PVB intermediate film material comprises the following raw materials:

In2O3：50％；

SnO2：5％；

n-ITO：45％；

PVB resin powder: 60-100 parts;

plasticizer: 25-40 parts;

antioxidant: 0.3-0.5 part;

nano-scale insulating particulate slurry: 0.2-0.9 part;

ultraviolet absorber: 0.1-1 part.