The invention provides a surface modification gas-phase silicon dioxide capable of enhancing the high temperature resistant property of silicon rubber. The technical essential is as follows: the surface modification gas-phase silicon dioxide is generated by reacting gas-phase silicon dioxide and a modifier, and the modifier is selected from siloxane, silazane or/and chlorsilane. The invention also provides a production method of the surface modification gas-phase silicon dioxide. The production method comprises the following steps of: replacing by using an inert gas at ordinary pressure, increasing the temperature of a modification reactor, and keeping the temperature; processing the inner surface of the reactor through gasified silazane by taking the inert gas as a carrier gas; then keeping the access of the carrier gas; carrying the pneumatolytic modifier into the reactor by using the carrier gas to be subjected to contact reaction with pretreated gas-phase silicon dioxide; keeping the access of the inert gas; reducing the temperature; and discharging to obtain a finished product. The production method provided by the invention can be used for solving the problems of high requirement of reaction condition, high production cost, easiness for equipment corrosion, and the like of the traditional process technology.

Surface modification gas-phase silicon dioxide capable of enhancing high temperature resistant property of silicon rubber and production method thereof

The invention relates to a binder composition comprising at least: a binder base selected among an oil, a bitumen base, a pitch, a clear binder or mixtures thereof; an acid compound of general formula (I): R-(COOH) z (I); an amide compound of general formula (II): R'-(NH) n CONH-(X) m -(NHCO) p (NH) n -R'' (II), the compounds (I) and (II) being provided with a weight ratio of 10:1 to 1:16. The invention also relates to a method for manufacturing coatings. The invention further relates to a method for transporting and/or storing and/or handling binder, in particular road binder, said binder being transported and/or stored and/or handled in the form of binder granules or binder cakes.

Binder that is solid at room temperature

The invention relates to granular bitumen that is solid at ambient temperature, including a core and a coating layer that covers all or part of the surface of the core, wherein the core includes at least one bitumen base, and the coating layer includes at least one viscosifying compound and at least one anticaking compound. The invention also relates to a method for manufacturing bitumen that is solid at ambient temperature and to the use of bitumen that is solid at ambient temperature as a road binder, particularly for manufacturing asphalts. The invention moreover relates to a method for manufacturing asphalts from solid bitumen and to a method for transporting and/or storing road bitumen that is solid at ambient temperature.

Bitumen which is solid at ambient temperature

The invention relates to a method for preparing hollow carbon nanospheres carrying superfine nitrogen doped metal nanoparticles through ultrasonic atomization and high-temperature carbonization. The method comprises the following steps that: a metal salt and an organic ligand are dissolved in a certain solvent; ultrasonic atomization is carried out, such that fine droplets are produced; inert gas is introduced so that the fine droplets are loaded into a tubular furnace which is preheated to a certain temperature; and a reaction is carried out for a certain period of time, such that the carbon nanosphere material loaded with embedded ultrafine nitrogen doped metal nanoparticles is obtained. Compared with existing carbon nanosphere material preparation technologies, the method provided by the invention has the advantages that the ultrafine nitrogen doped metal nanoparticles can be uniformly loaded on the carbon nanosphere material; continuous preparation can be realized; the processing capacity is controllable and adjustable; and the method is suitable for large-scale productions. The obtained nano-scale material can be widely applied in the fields such as electricity, magnetism, catalysis, biotechnology and the like.

Method for preparing hollow carbon nanospheres through ultrasonic atomization and carbonization

A method for manufacturing a material in divided form that is solid at ambient temperature and usable as a road binder or as a sealing binder, such as a road bitumen, a pitch, a stock solution for a bitumen/polymer composition, a clear binder, said method comprising the implementation of a device (1) intended for granulation that comprises at least two coaxial drums (4A, 4B) and a horizontal running belt (6): a fixed inner drum (4B) comprising at least one orifice (5B) and a rotating outer drum (4A) comprising a plurality of orifices (5A), said method comprising at least: (i) heating a first composition (2) to a temperature at which it is fluid, (ii) introducing the first composition (2) in the fluid state into the inner drum (4B) of the granulation device, (iii) distributing the first composition outwards in the form of drops (7) through the orifices (5A) in the rotating outer drum (4A), (iv) depositing the drops (7) on the running belt (6), and (v) optionally, coating the drops (7) with the second composition A device for manufacturing these materials

Method for manufacturing material in the form of granules that can be used as road binder or sealing binder and device for manufacturing same

The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

Fumed silica of controlled aggregate size and processes for manufacturing the same

Methods for the production of carbon black using an extender fluid(s) are provided as well as methods to control one or more particle properties of carbon black utilizing extender fluids and other techniques.

A method for producing carbon black using an extender fluid

Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.

Carbon coated particles

FIELD: chemistry.SUBSTANCE: in methods a solvent fluid medium is combined with a raw material for carbon black, with forming a mixture of the fluid medium and the raw material. Wherein the solvent fluid medium increases the kinetic energy of the raw material for carbon black. To control the particle characteristics, the amount of the fluid medium present in the mixture of the fluid medium with the raw material is corrected.EFFECT: possibility to control the characteristics of the carbon black particles without the process interruption and the reactor shutdown.22 cl, 8 dwg, 2 tbl, 2 ex

Method for producing carbon black with using solvent fluid medium

La presente invention concerne des procedes pour la production de noir de carbone en utilisant un/des fluide (s) de charge ainsi que des procedes pour controler une ou plusieurs proprietes de particules de noir de carbone en utilisant des fluides de charge et d'autres techniques.

David M. Matheu

Papers

Fumed silica of controlled aggregate size and processes for manufacturing the same

A method for producing carbon black using an extender fluid

Carbon coated particles

Method for producing carbon black with using solvent fluid medium

Procede pour produire du noir de carbone en utilisant un fluide de charge