Ultrasonic Mixing of Epoxy Curing Agents.

Abstract

A new technique for mixing solid curing agents into liquid epoxy resins using ultrasonic energy has been developed. This procedure allows standard curing agents such as 4,4'-diaminodiphenyl sulfone (4,4'-DDS) and its 3,3'-isomer, (3,3'-DDS) to be mixed without prior melting of the curing agent. It also allows curing agents with very high melt temperatures such as 4,4'-diaminobenzophenone (4,4'-DABP) (242 C) to be mixed without premature curing. Four aromatic diamines were ultrasonically blended into MY-720 epoxy resin. These were 4,4'-DDS; 3,3'-DDS; 4,4'-DABP and 3,3'-DABP. Unfilled moldings were cast and cured for each system and their physical and mechanical properties compared.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1983
Accession Number
ADA129974

Entities

People

  • T. L. St. Clair
  • W. T. Hodges

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Army Aviation
  • Composite Materials
  • Curing
  • Curing Agents
  • Energy
  • Epoxy Resins
  • Flexural Strength
  • Gel Permeation Chromatography
  • Glass Transition Temperature
  • Low Temperature
  • Materials
  • Mechanical Properties
  • Mixing
  • Polymers
  • Radiation Pressure
  • Resins
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.