Resin Description

Figure 2. Parameter values after 1000 h exposure to 0.1M H2SO4. See Table I for resin description code.

In the presence of hydrogen ions the above exchange would not occur (Chapter 4, Resin Description ) but if alkaline hardness is present the exchanged hydrogen ions are immediately neutralized by the basic hydrogencarbonate and carbonate anions present to give carbon dioxide which remains dissolved in the water as weak carbonic acid as given by equations 8.4 and 8.5. 

Throughout the following Directory pages, and when made available by the manufacturer or supplier, each thermoset resin description is accompanied by typically, a two-line tabulation, highlighting a maximum of 18 important resin and laminate properties, using codes a. to r. as below. These must be considered indicative values for guidance only, as like any property evaluation all are clearly open to some variation. Consequently they do not, and must not form, any part of an individual resin specification. Further information should always be requested from the manufacturer or supplier, and then ultimately confirmed by actual laboratory or production evaluation. 

Jotlin Polymer AS (See note prior to resin descriptions)... 

Huntsman Chemical Company Australia Ltd Jiangyin Crabec Synthetic Chemicals Co Ltd Jotun Polymer AS (See note prior to resin descriptions) Llewellyn Ryland Ltd Lonza SpA... 

The company also import other casting resins from Jotun Polymer (now Reichhold). Please see the appropriate section for resin description. Other grades can be made available depending on demand. 

This second edition, built on the success of the first, has become necessary as a result of the continuing development of the world-wide composites industry. This has included, the entry of new companies, new and improved thermoset resin systems and moreover major and important changes in the whole manufacturer/supplier picture, since the first edition was published in 1993. Whilst retaining the comprehensive contact listing of all those companies in an initial directory section together with some basic understanding of thermoset chemistry, a change in the layout of the second part, has not only allowed more resin description and property tabulation within that databook section, but also a much more reader friendly, useful layout. 

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