System for vacuum pouring of epoxy tensile and impact specimens with a study of the behavior of these specimens at 77 K and 293 K. [Epon 828, Epon 871, and Epon curing agent 2]

PDF Version Also Available for Download.

Description

The purpose of the investigation described in this report was to establish a suitable technique for vacuum pouring of epoxy test specimens and to study the behavior of these specimens at 77 K and 293 K. A series of tensile and impact tests was conducted using specimens made from the following resins: Epon 828, Epon 871, and Epon curing agent Z. These materials are of general interest to designers of magnets for cryogenic service. Some of the applications that may be considered are: structural support, spacing, electrical insulation, and thermal insulation. The epoxies mentioned above were selected for more extensive ... continued below

Physical Description

Pages: 11

Creation Information

Fitzpatrick, C.M. & Stoddart, W.C.T. March 1, 1978.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The purpose of the investigation described in this report was to establish a suitable technique for vacuum pouring of epoxy test specimens and to study the behavior of these specimens at 77 K and 293 K. A series of tensile and impact tests was conducted using specimens made from the following resins: Epon 828, Epon 871, and Epon curing agent Z. These materials are of general interest to designers of magnets for cryogenic service. Some of the applications that may be considered are: structural support, spacing, electrical insulation, and thermal insulation. The epoxies mentioned above were selected for more extensive testing because they have been used successfully, at room temperature in EBT and ORMAK programs in the Fusion Energy Division at Oak Ridge National Laboratory. Liquid nitrogen was chosen over liquid helium because it is less difficult to handle, less expensive, and in most instances physical properties of epoxies seem to change very little from 77 K to 4.2 K. The two main features of the vacuum pouring apparatus are (1) batches can be poured under near-identical conditions, and (2) samples can be handled free from air contamination. Tests of the specimens were carried out at 77 K and 293 K. The 77 K data indicate that tensile strength increases proportionally with the increase of Epon 871 relative to Epon 828. When the mixture includes more than 90% Epon 871, impact testing at 293 K becomes practically impossible due to the rubbery condition of the material. However, when tested at 77 K, this same mixture evinces high tensile strength. When optimum data are sought over a wide range of temperatures, 77 K to 293 K, it appears that a mixture of 70% Epon 871, 30% Epon 838 with 13 ppH curing agent Z offers the best compromise in tensile strength, modulus of elasticity and impact resistance.

Physical Description

Pages: 11

Notes

Dep. NTIS, PC A02/MF A01.

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: ORNL/TM-5493
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/5049245 | External Link
  • Office of Scientific & Technical Information Report Number: 5049245
  • Archival Resource Key: ark:/67531/metadc1061743

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • March 1, 1978

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Feb. 1, 2018, 6:14 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 9

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Fitzpatrick, C.M. & Stoddart, W.C.T. System for vacuum pouring of epoxy tensile and impact specimens with a study of the behavior of these specimens at 77 K and 293 K. [Epon 828, Epon 871, and Epon curing agent 2], report, March 1, 1978; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1061743/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.