Polyvinyl butyral transparent film and preparation method thereof

A polyvinyl butyral, polyvinyl alcohol technology, applied in the direction of adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problems of high price, complicated control of process conditions and high production costs

Active Publication Date: 2013-01-09
CHANGZHOU XIAOGUO INFORMATION SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most heat-insulating transparent glass is coated glass, and the outer surface of the glass is covered with a layer of heat-insulating polymer coating or film. Most of these heat-insulating materials are made of polymer Nanoparticles that are highly reflective to infrared rays are added to block infrared heat radiation. Although the thermal conductivity of nanoparticles is much larger than that of polymers, the reflected heat is greater than its own heat conduction, so it can also show excellent insulation. Thermal properties; as Chinese patent 200610096832.3 discloses a transparent heat-insulating film and a preparation method thereof, using nano-indium tin oxide (ITO) and nano-titanium dioxide and polymer resin (such as water-based polyurethane, epoxy resin or polyvinyl butyral ), coating additives, diluents and curing agents are blended, coated on a transparent film substrate and heated and cured to obtain a transparent heat-insulating film. The film has good light transmission performance, and the infrared shielding rate is over 60%. Almost 100%, but the ITO particles are rare and precious metals, resulting in higher production costs; Chinese patent CN1555989A discloses a car windshield with infrared reflection performance and its preparation method, using the magnetron sputtering method to oxidize the Materials are used as raw materials, and a semiconductor oxide film is deposited on one side of a polyvinyl butyral (PVB) film, which has good thermal insulation performance and a visible light transmittance of about 70%, but the process conditions are complicated to control and expensive; Chinese patent CN201110138776 .6 Announced a transparent glass heat-insulating coating, which is prepared by mixing acrylic resin, PVB, nano-antimony tin oxide (ATO), nano-TiO2, dispersant and solvent, although The added nano-TiO2 can effectively block ultraviolet rays, but has a certai

Method used

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  • Polyvinyl butyral transparent film and preparation method thereof
  • Polyvinyl butyral transparent film and preparation method thereof
  • Polyvinyl butyral transparent film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step (1): Weigh 100g of PVA and 2000g of distilled water respectively, add them to a four-necked flask equipped with a thermometer, stirrer, and reflux condenser, raise the temperature to 90°C, stir to completely dissolve the PVA, and then cool to room temperature; add 3.2g Sodium dodecylbenzene sulfonate and 20g concentrated hydrochloric acid, at room temperature, use a constant pressure dropping funnel to drip 70g n-butyraldehyde at 10 drops / min. After the addition is complete, keep it for 2h, and then heat up to 50℃ within 2h. React at constant temperature for another 2h, discharge, after cooling to room temperature, neutralize to neutral pH=7 with 5% sodium hydroxide solution, wash the product several times with distilled water to fully remove surfactant and unreacted n-butyraldehyde Wait for impurities, filter by suction, and dry in an oven not higher than 50℃ to obtain PVB products.

[0032] Step (2): Weigh 15g of PVB product prepared in step (1), 0.5g of plasticizer...

Embodiment 2

[0034] Step (1): Weigh 0.15g nano-ATO particles, 0.003g γ-glycidoxypropyltrimethoxysilane, 0.024g hyperdispersant 6300 and 3g ethanol respectively, add them into a single-necked flask, and disperse by 200kHz ultrasonic wave After 40 minutes, a surface modification-treated nano ATO dispersion liquid is obtained.

[0035] Step (2): Weigh 15g of PVB product prepared in Example 1, 0.8g of plasticizer tetraethylene glycol diheptanoate, and 0.2g of antioxidant 2,2 ， -Methylene bis(6-tert-butyl-4-methylphenol) and 200g of ethanol are stirred and mixed. After dissolving uniformly, add the nano-ATO dispersion in step (1) to it. After ultrasonic for 50 minutes, continue to stir to make After the ATO is evenly dispersed in PVB, it is poured into a mold at room temperature to form a film, and a PVB / nano ATO film with an ATO content of 1% is obtained.

Embodiment 3

[0037] Step (1): Weigh 0.15g nano-ATO particles, 0.003g γ-glycidoxypropyltrimethoxysilane, 0.024g hyperdispersant 6300 and 3g ethanol respectively, add them into a single-necked flask, and disperse by 200kHz ultrasonic wave After 40 minutes, a surface modification-treated nano ATO dispersion liquid is obtained.

[0038] Step (2): Weigh 15g of PVB product prepared in Example 1, 0.5g of plasticizer tetraethylene glycol diheptanoate, and 0.15g of antioxidant 2,2 ， -Methylene bis(6-tert-butyl-4-methylphenol) and 200g of ethanol are stirred and mixed. After dissolving uniformly, add the nano-ATO dispersion in step (1) to it. After ultrasonic for 50min, continue to stir to make After the ATO is evenly dispersed in PVB, it is poured into a mold at room temperature to form a film, and a PVB / nano ATO film with an ATO content of 1% is obtained.

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Abstract

The invention belongs to the field of polymer/nanoparticle composite materials, and relates to an infrared thermal reflection and anti-ultraviolet polyvinyl butyral (PVB) transparent film for laminated safety glass and a preparation method thereof. According to the method, nano-indium stannum oxide (ATO) is selected as functional particles, is subjected to double processing through a coupling agent and a dispersing agent and is poured into a mold to be formed and compounded after being directly and uniformly mixed with purchased or self-made polyvinyl butyral, plasticizer, antioxidant and filming agent by means of ultrasonic wave to prepare a heat-insulating PVB nano composite film. The nano-ATO particles are subjected to the double processing and the special ultrasonic dispersion process, so that the problem of agglomeration of the ATO is effectively improved; and the prepared PVB nano composite film has superior mechanical property and higher infrared reflectivity and visible light transmittance, and can be directly used for processing and producing heat-insulating, sound-insulating, anti-ultraviolet, transparent and impact-resistant multi-functional safety glass.

Description

technical field [0001] The invention belongs to the field of polymer / nanoparticle composite materials, and relates to an infrared heat-reflecting and anti-ultraviolet polyvinyl butyral (PVB) transparent adhesive film for laminated safety glass and a preparation method thereof, in particular to surface modification of nanoparticles properties and the preparation method of PVB nano-composite interlayer film, which is mainly used in industries such as building energy-saving, automobile energy-saving safety glass and other industries. Background technique [0002] Energy conservation and environmental protection have always been one of the hot spots in today's society. Modern buildings use large-area glass curtain walls and doors and windows. The good light transmission effect of glass beautifies the house landscape. Radiation is directly transmitted into the room, and the cold house in winter is not insulated, which increases the electricity load of the air conditioner and lead...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J129/14C09J11/04C09J11/06C03C27/12C08F16/06C08F8/28
Inventor 张东亮马晓敏李坚蒋必彪
Owner CHANGZHOU XIAOGUO INFORMATION SERVICES
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