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Transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite and preparation method thereof

A technology of polyvinyl butyral and nano-composite materials, which is applied in automotive safety glass, construction, in-situ dispersion and one-step synthesis of PVB nano-composite materials and its preparation, and can solve the problem of high price, low reflectivity and PVB nano-composite Material research has not been reported, etc.

Active Publication Date: 2012-01-04
溧阳常大技术转移中心有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN1555989A discloses a car windshield with infrared reflection performance and its preparation method. Using magnetron sputtering method, semiconductor oxide is used as raw material to deposit semiconductor oxide film on one side of PVB film, which has good heat insulation performance. , the visible light transmittance is about 70%, but the control of process conditions is complex and expensive
Chinese patent CN1434063A discloses a method for preparing heat-reflective coatings, using epoxy-modified acrylic emulsion as a film-forming material, hollow microspheres as a heat-insulating material, and adding pigments, fillers, additives, etc., but the product’s outdoor The weather resistance is poor, and the reflectivity in the infrared region is small, mainly between 50% and 80%.
Chinese patent CN101845268A discloses a preparation method of a water-based one-component glass heat-insulating transparent coating, which uses polyurethane resin as a base, adds metal oxides, additives, and water according to the total amount, and mixes and stirs to make a water-based one-component glass insulation coating. Thermally transparent coatings have a certain light reflection and heat insulation effect in the infrared region, but the transmittance in the visible region is about 60%, and the light transmission performance is not high
[0004] In order to solve the above technical deficiencies in current glass heat insulation materials, this patent proposes to directly introduce pretreated nanoparticles in the synthetic resin stage, that is, the research on the preparation of PVB nanocomposites by in-situ dispersion and one-step method has not been reported.

Method used

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  • Transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite and preparation method thereof
  • Transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite and preparation method thereof
  • Transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step (1): Add 15g of PVA and 200g of distilled water into a four-necked flask equipped with a condenser, a thermometer and an electric stirrer, raise the temperature to 90°C to completely dissolve the PVA, and then cool to room temperature;

[0046] Step (2): Add 0.3g nanometer ITO, 0.006g γ-glycidyl etheroxypropyl trimethoxysilane, 0.048g dispersant 5040, 6g distilled water in turn in the beaker, and disperse under the action of 200kHz ultrasonic wave for 30min to obtain surface treatment The nano-ITO dispersion liquid that has passed. Add the nano-ITO dispersion into the four-necked flask of the PVA aqueous solution prepared in step (1), and then disperse under the action of ultrasonic waves for 60 minutes;

[0047] Step (3): Weigh 0.32g of sodium dodecylbenzene sulfonate and 11g of concentrated hydrochloric acid into the four-necked flask containing nano-ITO PVA aqueous solution in step (2), weigh 15g of n-butyraldehyde in constant pressure drop In the funnel, at ro...

Embodiment 2

[0050] Step (1): Add 10g of PVA and 200g of distilled water into a four-neck flask equipped with a condenser, a thermometer and an electric stirrer, raise the temperature to 90°C to completely dissolve the PVA, and then cool to room temperature;

[0051] Step (2): Add 0.20g of nano-ITO, 0.004g of γ-glycidyl etheroxypropyl trimethoxysilane, 0.032g of dispersant 5040, and 4g of distilled water in sequence in a beaker, and disperse for 30min under the action of 200kHz ultrasonic waves to obtain surface-treated nano ITO dispersion. Add the nano-ITO dispersion into the four-necked flask of the PVA aqueous solution prepared in step (1), and then disperse under the action of ultrasonic waves for 60 minutes;

[0052] Step (3): Weigh 0.32g of sodium dodecylbenzene sulfonate and 0.55g of concentrated hydrochloric acid into the four-necked flask containing the PVA aqueous solution of nano-ITO in step (2), weigh 6g of n-butyraldehyde in constant pressure drops In the liquid funnel, at ro...

Embodiment 3

[0055] Step (1): Add 5g of PVA and 100g of distilled water into a four-neck flask equipped with a condenser, a thermometer and an electric stirrer, raise the temperature to 90°C to completely dissolve the PVA, and then cool to room temperature;

[0056] Step (2): Add 0.20g of nano-ITO, 0.004g of γ-glycidyl etheroxypropyl trimethoxysilane, 0.032g of dispersant 5040, and 4g of distilled water in sequence in a beaker, and disperse for 30min under the action of 200kHz ultrasonic waves to obtain surface-treated The nano-ITO dispersion liquid that has passed. Add the nano-ITO dispersion into the four-necked flask of the PVA aqueous solution prepared in step (1), and then disperse under the action of ultrasonic waves for 60 minutes;

[0057] Step (3): Weigh 0.16g of sodium dodecylbenzene sulfonate and 0.55g of concentrated hydrochloric acid into the four-necked flask of PVA aqueous solution containing nano-ITO in step (2), weigh 2.5g of n-butyraldehyde under constant pressure In the...

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Abstract

The invention relates to a transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite and a preparation method thereof, belonging to the field of polymer-nano particle composite. Nano particles processed by coupling agent are dispersed in polyvinyl alcohol by ultrasonic wave and dispersing agent; under the action of catalyst, the nano particles and n-butanal are subjected to condensation reaction; nanocomposite is prepared with an in-suit dispersion one-step method; then, the nanocomposite and a proper quantity of antioxygen and film-forming solvent are stirred and mixed to obtain homogeneous solution; and then the homogeneous solution is poured into a mould to form the film. The film manufactured with the nanocomposite synthetized with the in-suit dispersion one-step method has even appearance, high transparency of a visible region and obvious heat-insulation effect of reflected infrared. The method is convenient to operate, and the production process route is simplified and shortened. Compared with other methods, the method can achieve same mechanical property and heat insulation effect, the adopted nano particle has small use amount, and therefore, production cost can be obviously lowered, which is favorable for industrial production. The transparent heat-insulation polyvinyl alcohol poly-butyraldehyde nanocomposite has wide application prospect in the safety glass industry of buildings and automobiles.

Description

technical field [0001] The invention belongs to the field of polymer-nanoparticle composite materials, and relates to a heat-insulating transparent polyvinyl butyral (hereinafter referred to as PVB) nanocomposite material and a preparation method thereof, in particular to in-situ dispersion and one-step synthesis of PVB nanocomposite materials and The preparation method is mainly used in construction and automobile safety glass industries. technical background [0002] With the rapid development of national economy and modern science and technology, energy saving and environmental protection are getting more and more attention. Large-area architectural glass curtain walls, transparent ceilings and automotive safety glass all use a large amount of glass. However, although ordinary glass has good light transmission effect, it has great defects in heat insulation. Therefore, the development has both excellent heat insulation performance and Laminated safety glass with high lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/14C08K13/06C08K3/22C08K3/36C08K3/38C08F8/28
Inventor 张东亮李红莲马晓敏李坚蒋必彪
Owner 溧阳常大技术转移中心有限公司
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