Powdered epoxy resin toughener and preparation method thereof
A technology of powder epoxy resin and epoxy resin, which is applied in the field of toughening agent, can solve the problems of less research on toughening, and achieve the effect of cheap raw materials, easy control, and easy industrialization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0019] Example 1
[0020] 72 mL (0.5 mol) of n-butyl acrylate (nBA), 6.82 mL (0.05 mol) of glycidyl methacrylate (GMA), 120 mL of solvent (N,N-dimethylformamide), initiator (azodicarbonate) isobutyronitrile) 0.35g was added to install stirrer, reflux condenser and N 2 In the 500mL four-necked bottle of the gas protection device, nBA and GMA were added according to the experimentally designed ratio (nBA / GMA molar ratio 10 / 1). The reaction is carried out at a temperature of about 70°C for 5-6 hours.
[0021] The product was precipitated and washed with deionized water, dissolved, precipitated and washed again, and finally dried in a vacuum drying oven (40° C.) for 24 hours to obtain pure polymer P(nBA-GMA).
[0022] The structure of the product was characterized by infrared spectrometer, and the results are shown in figure 1 , 1730cm on the spectrum -1 Nearby is the absorption peak of carbonyl, 1149cm -1 is the asymmetric absorption peak of C-O-C in the ester group. The ch...
Example Embodiment
[0023] Example 2
[0024] The solid epoxy resin and the synthetic toughening agent are heated and melted according to different ratio systems (the mass ratio of toughening agent and epoxy resin is 0 / 100-25 / 100) for physical blending, and a phenolic curing agent is added. (The mass ratio is 20% of the epoxy resin), extruded and cooled on an extruder, and finally pulverized to obtain a blending system of a toughening agent, an epoxy resin and a curing agent.
[0025] The obtained blended system powder is pressed on a hot press, and finally processed into a test strip for mechanical property testing. figure 2 is the impact performance curve of epoxy resin modified with different proportions of tougheners. figure 2 It is shown that the addition of toughening agent can improve the impact toughness of epoxy resin, and with the increase of the amount of toughening agent added, the impact strength is greater. When the mass ratio of toughener to epoxy resin is 5 / 100, the toughness ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap