APPLICATION OF THE RESIN DERIVED FROM THE NATIVE EUPHORBIA CADUCIFOLIA HAINES AS MULTIFUNCTIONAL ADDITIVE IN FILLED NATURAL RUBBER COMPOUNDS

作者：Bhattacharyya Sanjay K; Parmar Bhavani S; Mukhopadhyay Rabindra; Bandyopadhyay Abhijit^*

来源：Rubber Chemistry and Technology, 2017, 90(3): 429-444.

DOI：10.5254/rct.16.83775

The whole coagulum (Cog) and its toluene-soluble fraction [toluene extract (TE)] obtained via the coagulation of the latex of Euphorbia caducifolia Haines was used as a green, multifunctional additive in a filled NR compound. The actions of Cog and TE were compared with two commercial resins, non-heat-reactive octyl phenol-formaldehyde (PF) and coumaroneindene (CI), at equal doses and also with conventional aromatic oil (through replacement). Both Cog and TE exhibited comparable tack strength with CI, but lower tack strength with PF. In addition, TE improved the cure rate index, unlike Cog and the commercial resins. When the aromatic oil was replaced with TE and Cog at different levels, we observed that TE could replace 100% of the original oil content, whereas Cog could only replace 33% of the original oil content from the recipe without deterioration of physico-mechanical properties. Both forms of natural resins decreased the intrinsic elasticity of the compounds and improved the aging resistance of the vulcanizates.

• 出版日期2017-9