Title

Research On Heat-Resistant Acrylate-Siloxane Elastomers

Date

1955

Index Abstract

Coming Soon

Photo Quality

Complete

Report Number

WADC TR 54-525

Creator

Cox, Robert P.

Yaeger, Luther L.

Buetow, Ralph W.

Corporate Author

Bj0rksten Research Laboratories, Inc.

Laboratory

Materials Laboratory

Extent

60

NTRL Accession Number

AD063963

Identifier

AD0063963

Access Rights

Notice(s)

Distribution Classification

1

Contract

AF 33(616)-2135

DoD Project

7340

DoD Task

73404

DTIC Record Exists

No

Distribution Change Authority Correspondence

AFWL ltr

Distribution Change Action Date

4/19/2004

Abstract

The objective of this project was the synthesis of acrylate-siloxane elastomers with good thermal and solvent resistance. Of the many polymers investigated as gum rubber bases, vinyl triethoxy-silane-acrylonitrile, ethyl acrylate compositions were the best as measured by (1) swelling in 70-30 iso-octane-toluene and in Penola oil and (2) weight loss and flexibility after heating in air at 350 F. The addition of either dibutyl phosphite or polychlorotrifluoro ethylene powder (Kel F) to these gum rubbers generally maintained their flexibility in air at 350 F. for 250 to 1000 hours. As a reinforcing filler to provide good tensile strength. carbon black (Philblack O) was superior to other fillers tested. Trimene Base was effective as a vulcanization accelerator throughout this work. The vinyl triethoxysilane-ethyl acrylate gum rubbers could be vulcanized without additives through the formation of cross-linkages. Cross-linking probably took place through adjacent >SiOH groups formed in emulsion polymerization.

Report Availability

Full text available

Date Issued

1955-02

Provenance

IIT

Type

report

Format

1 online resource