The gas evolution of a modified cellulose mixture used for gating systems in the no-bake mould process

This paper shows the results of a study of gas evolution from a patented modified cellulose mix used in the production of no-bake casting moulds. The modified cellulose mixture was used for investigation with additives such as expanded perlite, expanded vermiculite and microspheres. The binder was an inorganic resin based on commercial technology, called Geopol. Samples were tested in different compositions in order to show the influence of all the additives mentioned. Two different methods were used-one was based on TG-TDG-MS investigation and the other was based on pyrolysis combined with a gas composition analyser. Investigations of both methods were carried out at temperatures up to 900 degrees C. The results showed that the gas emissions during thermal degradation of all the modified mixtures did not constitute substances that are hazardous or dangerous to health. Therefore, the material proposed can be used as a solution that is more environmentally friendly when compared to formulas which exist on the market and are abundant in harmful compounds.

Automated summary

This paper presents the results of a study on gas evolution from a patented modified cellulose mix used in the production of no-bake casting molds. The experiments show that the gas emissions from the modified mixtures during thermal degradation do not contain hazardous or dangerous substances, making it a more environmentally friendly solution compared to existing formulas on the market.