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

Modified nano-polystyrene reinforced and toughened epoxy resin composite nano-material and preparation method thereof

A technology of nano-composite materials and tough epoxy resin, which is applied in the field of modified nano-polystyrene reinforced and toughened epoxy resin nano-composites and its preparation, which can solve the problems of high surface energy, large particle size and high content of polystyrene problems, to achieve the effects of improved tensile strength and toughness, improved tensile elongation, and good interfacial compatibility

Inactive Publication Date: 2018-11-06
TONGJI UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polystyrene has been used in a small amount in toughening and reinforcing epoxy resin, but polystyrene has a large particle size and high content, and the composite material lacks ease of processing
On the other hand, polystyrene is a high-molecular polymer, and it is difficult to obtain nano-microspheres. Moreover, nano-polystyrene has a large specific surface area and high surface energy, and it is easy to form agglomerates in the polymer resin matrix. Enhanced functionality, limited application

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
  • Modified nano-polystyrene reinforced and toughened epoxy resin composite nano-material and preparation method thereof
  • Modified nano-polystyrene reinforced and toughened epoxy resin composite nano-material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, 1 weight part of polystyrene is added to 2500 weight parts of cyclohexane (volume fraction 20%), acetone (volume fraction 30%), ethyl acetate (volume fraction 50%) mixed solution, magnetic Stir until completely dissolved. Add 3 parts by weight of 5% anhydrous aluminum chloride / ethanol solution, and react for 1 h under magnetic stirring. Then add 2 parts by weight of epichlorohydrin, and react for 0.5 h under magnetic stirring. After the reaction is complete, wash, dry and grind to obtain modified polystyrene powder.

[0018] Add 5 parts by weight of modified polystyrene powder to 70 parts by weight of N,N-dimethylformamide (DMF). Then magnetically stirred for 3 h, and after complete dissolution, polystyrene microspheres were obtained by electrospinning. Electrospinning parameters were as follows: polymer concentration 2%, propulsion speed 0.05 μl / min, electrostatic voltage 10 kV, receiving distance 15 cm.

[0019] Add 0.2 parts by weight of nano polystyre...

Embodiment 2

[0021] Example 2, 20 parts by weight of polystyrene is added to 3000 parts by weight of cyclohexane (volume fraction 10%), acetone (volume fraction 40%), ethyl acetate (volume fraction 50%) mixed solution, magnetic Stir until completely dissolved. Add 5 parts by weight of 7% anhydrous aluminum chloride / ethanol solution, and react for 1 h under magnetic stirring. Then add 3 parts by weight of epichlorohydrin, and react for 1 h under magnetic stirring. After the reaction is complete, wash, dry and grind to obtain modified polystyrene powder.

[0022] Add 25 parts by weight of modified polystyrene powder to 75 parts by weight of N,N-dimethylformamide (DMF). Then magnetically stirred for 5 h, and after complete dissolution, polystyrene microspheres were obtained by electrospinning. The electrospinning parameters were: polymer concentration 6%, propulsion speed 0.2 μl / min, electrostatic voltage 15 kV, receiving distance 25 cm.

[0023] Add 0.1 parts by weight of nano polystyren...

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

No PUM Login to View More

Abstract

The invention relates to a modified nano-polystyrene reinforced and toughened epoxy resin composite nano-material and a preparation method thereof. The composite material comprises, by weight, 50-80 parts of epoxy resin, 0.1-10 parts of modified nano-polystyrene microspheress and 15-30 parts of a curing agent. The preparation method concretely comprises the following steps: preparing modified polystyrene powder; carrying out electrospinning to prepare the modified nano-polystyrene microspheres; adding the modified nano-polystyrene microspheres to the epoxy resin, and standing the obtained mixture at room temperature for 12 h; and performing primary mechanical stirring, adding the curing agent, continuously carrying out secondary mechanical stirring, pouring the obtained mixture into a rubber mold preheated at 80-130 DEG C, curing the mixture for 3-7 h, cooling the cured mixture to room temperature, and opening the mold to obtain the target product. The problem of easy agglomeration ofunmodified nano-polystyrene in the epoxy resin matrix is solved, and the introduction of surface functional groups of nano-polystyrene makes the nano-polystyrene and the epoxy resin matrix have a better interface compatibility, so the tensile strength and the toughness of the are obviously improved.

Description

technical field [0001] The invention relates to a resin-based nano-composite material, in particular to a modified nano-polystyrene reinforced and toughened epoxy resin nano-composite material and a preparation method thereof. Background technique [0002] Due to its excellent physical and chemical properties and good processing technology, epoxy resin, as one of the matrix materials in the field of industrial production, has been widely used in adhesives, coatings, aerospace and other fields. However, the high brittleness and poor tensile strength of cured epoxy resin limit its wide application. In order to further expand the application of epoxy resin in aerospace and other fields, improving its tensile strength and toughness is the key technology. [0003] Polystyrene (PS) is a commonly used thermoplastic material, which is widely used in the production of transparent packaging materials, transparent plastic containers, trays and disposable tableware. At present, polyst...

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
IPC IPC(8): C08L63/00C08L25/06
CPCC08L63/00C08L25/06
Inventor 谷红波马超张洪源
Owner TONGJI UNIV
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