The Present Emergency

2002 ◽  
Vol 3 (3) ◽  
pp. 17-18
Author(s):  
Jeremy Black
Keyword(s):  
Present Emergency

Action of Organic Accelerators in Buna-S

1943 ◽  
Vol 16 (1) ◽  
pp. 184-202
Author(s):  
George R. Vila
Keyword(s):  
Natural Rubber ◽  
Fundamental Importance ◽  
Careful Study ◽  
Organic Substances ◽  
Unsaturated Polymer ◽  
Indefinite Number ◽  
Wide Range ◽  
Present Emergency

Abstract Buna-S is an unsaturated polymer capable of undergoing vulcanization. This may be effected by the application of heat in the presence of sulfur. The process is accelerated by certain organic substances which are used widely for a similar purpose in natural rubber. Preliminary teats have indicated that most of them are applicable to Buna-S, and appear superior to any other chemicals yet investigated. This is fortunate in view of the present emergency, as plants for their manufacture already exist and the industry is familiar with their use. In spite of superficially similar effects, more careful study has indicated that it is an oversimplification to assume various accelerators will produce ideptical effects in both polymers. A wide range of materials is now available to the industry, and the task of accurately evaluating all of them is complex. In addition, an indefinite number of combinations are theoretically possible. The present investigation was undertaken to determine what effect different chemical types of organic accelerators were likely to have on properties of fundamental importance.

Sign in / Sign up

Export Citation Format

Share Document