METHOD FOR PRODUCING A MASTER MIXTURE BASED ON CARBONACEOUS NANOFILLERS AND SUPERPLASTICISER, AND THE USE THEREOF IN HARDENABLE INORGANIC SYSTEMS

摘要

Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. A method for producing a master mixture including at least one superplasticiser and carbonaceous nanofillers at a mass ratio of between 0.1% and 25%, preferably between 0.2% and 20%, in relation to the total weight of the master mixture, and also to said master mixture thus obtained and to the use thereof in a hardenable inorganic system with a view to producing materials with improved properties. The disclosure applies to the construction industry, the building trade and the oil drilling industry.

主权项

1. A process for the preparation of a master batch comprising at least one superplasticizer and from 0.1% to 25% by weight of carbon-based nanofillers, expressed with respect to the total weight of the master batch, comprising:
(i) the introduction into a kneader and then the kneading of carbon-based nanofillers and of at least one superplasticizer, optionally in the presence of a water-soluble dispersing agent, in order to form a homogeneous mixture in the solid form or in the pasty composition form; (ii) the extrusion of said mixture in the solid form in order to obtain a master batch in the solid form; (iii) optionally the dispersion of said master batch in the solid form in a superplasticizer identical to or different from that of stage (i), or in a water-soluble dispersant, in order to obtain a master batch in the form of a pasty composition; (iv) optionally the introduction of the master batch in the form of a pasty composition obtained in stage (i) or in stage (iii), into a superplasticizer which is identical to or different from that of stage (i) or that of stage (iii), in order to obtain a master batch having a low content of carbon-based nanofillers.