Preparation method of vanadium pentoxide photochromic flexible epoxy resin film
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A flexible epoxy resin, vanadium pentoxide technology, applied in chemical instruments and methods, color-changing fluorescent materials, etc., can solve problems such as poor flexibility and ductility, and achieve the effect of improving flexibility and ductility
Active Publication Date: 2015-09-30
HARBIN INST OF TECH
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[0005] The purpose of the present invention is to solve the problem of poor flexibility and ductility of the existing vanadium pentoxide photochromic materials, thereby providing a method for preparing a vanadium pentoxide photochromic flexible epoxy resin film
Method used
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specific Embodiment approach 1
[0015] Specific embodiment one: In this embodiment, a method for preparing a vanadium pentoxide photochromic flexible epoxy resin film is realized according to the following steps:
[0016] 1. Take 7~9gV 2 o 5 Put the powder into an alumina crucible, heat it to melt, quickly pour it into 180-220ml of deionized water, stir it magnetically at a rate of 800-1000r / min for 1-3 hours, and obtain a vanadium pentoxide sol;
[0017] 2. Take 90-110ml of E44 type epoxy resin, add polydimethylformamide to dilute to 110-130ml, then add 25-35ml of polyamide curing agent and 5-7ml of vanadium pentoxide sol, mix well and let it stand Place until the air bubbles are discharged to obtain a mixed resin;
[0018] 3. Adjust the scraper of the film scraping machine to a height of 500 μm, pour 7-10ml of mixed resin on the surface of a glass plate with fiber cloth or a polytetrafluoroethylene plate, and scrape the film at a speed of 0.5-0.7m / min. Repeat scraping the film 2 to 3 times, then dry and...
specific Embodiment approach 2
[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is: take 8gV in step one 2 o 5 The powder was put into an alumina crucible, heated to melt, quickly poured into 200ml of deionized water, and stirred magnetically at a rate of 900r / min for 2h. Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0022] Specific embodiment three: the difference between this embodiment and specific embodiment two is: get the E44 type epoxy resin of 100ml in the step 2, add polydimethylformamide and dilute to 120ml, then add the polyamide curing agent of 30ml and 6ml Vanadium pentoxide sol. Other steps and parameters are the same as those in Embodiment 1.
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Abstract
The invention relates to a preparation method of a photochromic flexible epoxy resin film, in particular to a preparation method of a vanadium pentoxide photochromic flexible epoxy resin film to solve the problem that the suppleness and ductility of an existing vanadium pentoxide photochromic material are poor. The preparation method comprises the steps that firstly, vanadium pentoxide sol is prepared; secondly, mixed resin is prepared; thirdly, the mixed resin is subjected to film wiping and is dried, cured and taken off, and then the vanadium pentoxide photochromic flexible epoxy resin film is obtained. According to the preparation method, the vanadium pentoxide sol is disengaged from a hard base, vanadium pentoxide is dispersed into a flexible resin film and becomes flexible, and the suppleness and ductility of the film are improved. In addition, the photochromic effect can be achieved by adding a small amount of the vanadium pentoxide sol, and the requirements of people for the up-to-date wearability, the flexibility and the ductility can be met.
Description
technical field [0001] The invention relates to a preparation method of a photochromic flexible epoxy resin film. Background technique [0002] Add photochromic pigments to transparent resin to make photochromic materials, which are used in sun glasses, color-changing glasses, etc. Linking photochromic pigments with high polymers can make materials with photochromic properties, which have great application prospects in photoelectric technology and light control devices. Coatings with photochromic materials can be made into various daily necessities, clothing, toys, decorations, baby carriages or various signs and patterns coated on interior and exterior walls, highway signs and buildings, etc., which will show colors under light Rich and bright patterns or patterns can beautify people's life and environment; it can be made into transparent plastic film, pasted or embedded on automobile glass or window glass, and the color will change immediately when exposed to sunlight, so...
Claims
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