TERMITE RESISTANCE OF POLYVINYL CHLORIDE PLASTICS.
Abstract
A project for determining the nature of termite attack upon polymeric materials is in progress. Thirty-two formulations containing polyvinyl chloride resin were prepared incorporating, variously, four plasticizers, three insecticides and two degrees of hardness. After 14 months' exposure in the Panamanian jungle only 21 specimens showed evidence of termite attack, ranging from very slight to heavy. Of these, 14 specimens were composed of formulations containing no insecticide. By chi square test, insecticide has been shown to be significant in influencing attack distribution. Specimens containing dioctyl phthalate plasticizer showed the highest incidence of attack; those containing tricresyl phosphate fortified with the ortho isomer, the lowest. Some specimens shrank on their supporting dowels. The plasticizer may be a factor, since 40% of those containing dioctyl adipate shrank; only 3% of those containing other plasticizers did so. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 20, 1966
- Accession Number
- AD0638599
Entities
People
- C. R. Southwell
- J. D. Bultman
- J. M. Leonard
Organizations
- United States Naval Research Laboratory