Object mould reaction

At one time it seemed likely that the high-tra 5 polymer of cyclopentene formed in reaction (2) would find use as an all-purpose elastomer. Raw materials were cheap and the product had properties akin to those of natural rubber. However, its early promise has not been fulfilled. Other high-/ran5 polymers, such as those formed from norbomene, eqn. (11), and cyclooctene, eqn. (12), have found their way on to the market as components of elastomeric products, and the ROMP of enc o-dicyclopentadiene, eqn. (13), is being used to produce large objects by reaction injection moulding (RIM) see Ch. 17. 

The beneficial effects are demonstrated of heterogeneous secondary pyrolysis reactions on the liquid products of PU pyrolysis. Pyrolysis volatiles are passed through a packed bed of carbonaceous solids that promote the secondary reactions. Activated carbon and reaction injection moulded PU (RIM) char were found to be suitable bed materials. The long-term object was to develop marketable solid products by pyrolysis of wastes, so obtaining high char yields. In addition to affecting the liquid products, RIM char also increased the total char... 

The cheapness of DCPD, obtained as a by-product from the cracking of oil, makes it an attractive candidate for the production of objects by metathesis polymerization, using the reaction injection moulding (RIM) technique. 

To make reinforced plastics objects, the resin and fibres must be combined intimately, so that they adhere together and distribute the fibres uniformly, with the desired orientation, with a minimum of porosity and with no dry, resin-free reinforcement. The correct fibre volume fraction must be ensured. In the case of thermosetting resins, there is an additional requirement to ensure that the hardening reaction, or cure, occurs at the right stage of the process and is eventually completed. The methods available depend on the size, overall shape and complexity of the article being produced, the materials involved and the number of mouldings required. 

RLCA Reaction-limited cluster aggregation, an aggregation model similar to DLCA, except with a finite probability of forming a bond upon contact between objects RSCE Rapid supercritical extraction method where the sol-gel precursors themselves brought to a supercritical state inside a pressurized mould... 

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