Rubber bond

Rubber. Both natural and synthetic rubber are used as bonding agents for abrasive wheels. Rubber-bond wheels are ideal for thin cut-off and slicing wheels and centerless grinding feed wheels. They are more flexible and more water-resistant than resinoid wheels. 

Cyanide solutions are used almost exclusively. One typical solution contains copper cyanide 26 g/1, zinc cyanide 11 g/1, sodium cyanide (total) 45 g/1 and sodium cyanide ( free ) 7 g/l This bath is operated at pH 10.3-11.0, 110 A/m and 27-35 C, with 75 Cu-25 Zn alloy anodes. Many other solutions are used including a special rubber-bonding bath and a high-speed bath which is capable of being used at up to 16 A/dm . ... 

In recent years PETN sheet explosive, consisting of PETN in a rubber-like elastic matrix, has found considerable use in metal-forming, metalcladding and metal-hardening. Physical expl characteristics of rubber-bonded sheet expl are described by W. Kegler R. Schall (Ref 45, p 496), by Kegler (Ref 59), and in Refs 30c,... 

When an EPDM elastomer was examined, its tack was so low that no permanent cured mbber-to-rubber bond formed and the peel sample separated cleanly during test, at very low separation forces. No GD stage was necessary. 

A tyre which is composed of solid rubber bonded to a suitable wheel and without an internal air space, as in the pneumatic tyre or an internal cavity as in the semi-solid tyre. The main uses of solid tyres are on forklift trucks and armoured fighting vehicles (tanks). 

Rubber-bonded grinding wheels, 1 19 Rubber chemicals, sodium nitrite in, 22 858-859... 

Detonation and Mechanical Properties of Rubber Bonded Sheet Explosives are discussed by W. Kegler R. Schall in the 4thONRSympDeton (1965), pp 496-501... 

Rubber bonds well with metallic surfaces with suitable adhesives and this property is well utilized in many applications in the chemical industry, such as lining, metal rubber bonded anti corrosive molded components, diaphragms etc. 

This can be substantially improved by high black and high sulphur compounds. The only bottleneck is that not all metals are conducive to rubber bonding. Carbon steels are better than cast iron for bonding with rubber. Copper and zinc surfaces can be bonded with much ease. 

Rubber to metal bonding is a generic phrase covering a number of interdependent processes. The rubber bonded units that result from the process are used for the isolation of noise and vibration in automotive, engineering and chemical industry applications, such as in rubber lining of process equipment. 

Code designation, for gasket materials a = asbestos, white (compressed or woven) b = asbestos, blue (compressed or woven) c = asbestos (compressed and rubber-bonded) d = asbestos (woven and rubber-frictioned) e = CR-S or natural rubber 1 = Teflon... 

Fig. 1. Transmission electron micrograph of ABS produced by an emulsion process. Staining of the rubber bonds with osmium tetroxide provides contrast...

Rubber-covered meter mounting rings (rubber bonded)... 

Proprietary bonding agents are used almost exclusively in modern manufacturing processes for metal-rubber bonded products. Isocyanates were proved to be of value in the immediate postwar period, but their moisture sensitivity and tendency to be wiped off the metal during processing have proved as disadvantages. The majority of commercially available adhesives in use today are a complex mixture of undisclosed composition, and in many instances are specifically used for particular rubbers and substrates. 

---