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Nanometer multifunctional composite thin-membrane, its production and use

A composite film and multi-functional technology, applied in the direction of coating, etc., can solve the problem of high cost, achieve low cost, improve aging resistance, and improve wear resistance

Inactive Publication Date: 2005-12-28
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the existing technology that adding an anti-ultraviolet agent to the raw material of the polymer profile to improve the aging resistance is too high, and its own photocatalytic activity is easy to degrade the profile and the film material , so as to provide an anti-pollution, scratch-resistant, aging-resistant organic-inorganic nano-multifunctional composite film prepared by a low-cost method, and then coated on the surface of the profile to improve its aging resistance and mechanical properties

Method used

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  • Nanometer multifunctional composite thin-membrane, its production and use
  • Nanometer multifunctional composite thin-membrane, its production and use
  • Nanometer multifunctional composite thin-membrane, its production and use

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Embodiment 1, the preparation of nanometer α-FeOOH particle

[0051] To 500mL of FeSO with a concentration of 0.3mol / L 4 FeSO was added to the solution 4 Quality 0.3% sodium hexametaphosphate, temperature control at 30°C, stirring speed 500 (r / min), after dissolution is complete, gradually add 3mol / L sodium hydroxide solution 50mL to it at a speed of 2mL / min by means of forced feeding , to obtain colloidal precipitates of dark green ferrous hydroxide, ultrasonically dispersed for 30min, with 0.15m 3 The speed of / h is oxidized by air, the color changes from dark green to bean green to dark gray, and then turns yellow quickly. After 30 minutes of crystal growth, add FeSO 4 3wt% sodium dodecylbenzene sulfonate, ultrasonically dispersed for 30min and then heated to 80°C, at 0.5m 3 Air was passed in at a speed of 1 / h to continue the oxidation reaction for 5 hours to obtain a yellow colloidal mixture, which was then centrifuged, and the filter cake was washed repeatedly u...

Embodiment 2

[0052] Embodiment 2, the preparation of nanometer β-FeOOH particle

[0053] To 540mL of FeSO with a concentration of 0.4mol / L 4 FeSO 4 Quality 0.45% sodium silicate and 0.1% sodium chloride, temperature control at 35 ° C, stirring speed 600 (r / min), after the dissolution is complete, 60 mL of 2 mol / L aqueous urea solution is added dropwise at a speed of 5 mL / min , ultrasonically disperse for 25 minutes, gradually increase the temperature to 85°C, the color changes from dark green to dark gray, maintain the system temperature, adopt the forced feeding method, gradually add 10% hydrogen peroxide 10mL at a speed of 1ml / min to oxidize, the color turns yellow quickly, add accounted for FeSO 4 Mass 4wt% sodium hexanoate, stir, continue to add 90mL of 10% hydrogen peroxide at a speed of 1ml / min to obtain a yellow colloidal mixture, then centrifuge, wash the filter cake repeatedly until the pH value is neutral, and filter the cake at 100 After drying at ℃ for 2 hours, it was ground...

Embodiment 3

[0054] Embodiment 3, nano-α-Fe 2 o 3 Granule preparation

[0055] The nano-α-FeOOH particles were heated to 450°C within 30 minutes and calcined for 3 hours to obtain red nano-α-Fe 2 o 3 particles. The nano-α-Fe 2 o 3 It is spindle-shaped, with uniform particle size and good dispersion.

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Abstract

A multifunctional nanometer composite thin film, its production and use are disclosed. The thin film contains silicone, it is grafted with perfluoro-silicane 0.02í½0.1wt% on surface and doped with nanometer iron oxide particle 1í½4wt% in network, which is fusiform or needle alpha-FeOOH, beta-FeOOH, alpha-Fe2O3 or gamma-Fe2O3. The process is carried out by hydrolyzing for silane coupling agent and ethyl orthosilicate in water, alcohol and hydrolytic catalyst system, mixing, adding into alcohol, condensing and generating silicone polymer at 30í½60íÒC, adding into nanometer iron oxide particle and fluorosurfactant, reacting, obtaining thin-film sol, forming thin-film sol into film on treated substrate material, drying and curing. It achieves higher anti-aging and mechanical performances.

Description

technical field [0001] The invention relates to a composite film, in particular to an anti-pollution, scratch-resistant and aging-resistant organic-inorganic nanometer multifunctional composite film, its preparation method and application. Background technique [0002] With the development of science and technology, various profiles made of polymer materials have been widely used in people's lives due to their excellent performance. However, it is well known that one of the main problems of these polymer materials is aging over time in nature, for example, the aging of organic polymer materials can cause discoloration, cracking and degradation of mechanical properties. After joining the WTO, the domestic plastic building materials industry standards will be consistent with the new standards formulated by Europe in 2003, and this standard has stricter requirements on the aging resistance of polymer material profiles than before. Therefore, the aging resistance of profiles ne...

Claims

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Application Information

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IPC IPC(8): C09D183/10
Inventor 陈运法谢裕生叶树峰吴镇江张冬海王奇
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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