Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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, complex SERS substrate material equipment, etc., and achieve the effect of wide application prospects

Inactive Publication Date: 2012-08-22
NORTHEAST FORESTRY UNIVERSITY
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing transparent Raman effect film
  • Method for preparing transparent Raman effect film
  • Method for preparing transparent Raman effect film

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
transmittivityaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com