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Method for preparing transparent Raman effect film

A Raman effect and transparency technology, applied in chemical instruments and methods, lamination, non-woven fabrics, etc., can solve the problems of difficult control of the production process, complicated SERS base materials and equipment, and achieve the effect of wide application prospects.

Inactive Publication Date: 2014-07-02
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex equipment and difficult control of the production process in the preparation of SERS substrate materials, and provide a method for preparing a Raman effect film with transparency

Method used

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  • Method for preparing transparent Raman effect film
  • Method for preparing transparent Raman effect film
  • Method for preparing transparent Raman effect film

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specific Embodiment approach 1

[0009] Specific embodiment one: present embodiment is a kind of preparation method of the Raman effect film with transparency, specifically is finished according to the following steps: one, at first acetone and acetic acid are mixed by volume ratio 1: (1.8~2.2) , to obtain a mixed solvent, and then dissolve cellulose acetate in the mixed solvent at 55 ° C to 65 ° C to obtain a cellulose acetate solution; 2. Mix the Ag NPs suspension with the cellulose acetate solution prepared in step 1 to obtain a spinning solution. 3. The spinning solution prepared in step 3 is spun into a nanofiber non-woven felt through an electrospinning process; 4. First, the nanofiber non-woven felt of the same size is cut according to the hole groove of the composite film forming tool, and flattened. Spread it into the hole groove of the composite film forming tool, and then pour the polyvinyl alcohol aqueous solution with a mass fraction of 7% to 9% into the hole groove to completely cover the nanofib...

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is: the specific preparation process of the Ag NPs suspension described in step 2 is as follows: 1. First, silver nitrate is dissolved in deionized water to obtain a silver nitrate solution; ② Add soluble starch and lysine to deionized water in turn, and mix well to obtain a mixed solution; ③ Add silver nitrate solution to the mixed solution and mix evenly, then heat from room temperature to 140°C~160°C, and heat at 140°C~ Incubate at 160°C for 15s to 25s to obtain the Ag NPs suspension; the mass of silver nitrate described in step ① to the volume ratio of deionized water is (30g to 40g): 40ml; the soluble starch described in step ② The volume ratio of mass to deionized water is (0.6g~0.7g): 40ml; the mass of lysine described in step ② and the volume ratio of deionized water are (0.20g~0.27g): 40ml; step ③ The volume ratio of silver nitrate solution and mixed solution described in is (1~1.1):1.

[00...

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Abstract

A method for preparing a transparent Raman effect film relates to preparation of optical fiber films and aims to solve the problems of complicated equipment and difficulty in controlling a production process of an existing method for preparing SERS (surface enhanced Raman scattering) base materials. The method includes the steps: firstly, preparing cellulose acetate solution with acetone, acetic acid and cellulose acetate; secondly, uniformly mixing Ag NPs suspending liquid and the cellulose acetate solution to obtain spinning liquid; thirdly, spinning the spinning liquid into a nano-fiber nonwoven felt by means of electrostatic spinning process; and fourthly, tiling the cut nano-fiber nonwoven felt in a slot of a composite film forming tool, pouring polyvinyl alcohol water solution into the slot, leading the polyvinyl alcohol water solution to be lower than the upper edge of the slot of the composite film forming tool, and maintaining pressure and drying to obtain the transparent Raman effect film. The method is mainly used for preparing the transparent Raman effect film.

Description

technical field [0001] The present invention relates to an optical fiber film. Background technique [0002] Optically transparent and translucent fiber-reinforced composites have a wide range of applications, including flexible displays, aircraft glass, and light-transmitting electromagnetic wave shielding materials. The traditional method of preparing transparent composite materials is to add a small amount of reinforcing fibers to the transparent resin. The refractive index of the fiber and the resin should be matched to three decimal places to prevent light scattering at the interface between the fiber and the resin. However, this matching is limited by temperature conditions, so materials that are transparent at room temperature will become opaque as the ambient temperature changes. But for nanomaterials, the situation is different. If the size of nanomaterials is less than one-tenth of the wavelength of visible light, light will not be reflected and refracted at the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/12B32B37/10B32B38/16B32B38/18D04H1/4258D04H1/728
Inventor 李坚赵冬梅王明强白小静
Owner NORTHEAST FORESTRY UNIVERSITY
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