Abstract:
A method and device for the production of thermoplastics containing coarse-scale and/or nanoscale, coated, de-agglomerated magnesium hydroxide particles that are supplied to the thermoplastic in the form of a dispersion or suspension in an aqueous or organic solvent, and mixed with the themoplastic. The thermoplastics filled with magnesium hydroxide particles demonstrate improved mechanical properties, particularly an improved modulus of elasticity and low brittleness.
Abstract:
A tubular free-fall separator for the electrostatic separation of particles of a plastics mixture, includes two parallel opposite rows of vertical tubes which are either arranged rotatably around their own axis or are fixedly installed and are connected with a direct current voltage source for maintaining an electrostatic field between the rows. The tube rows are arranged in such a manner that two adjacent axis points of the tubes of one row always form a parallelogram, which has no right angles, with the opposite adjacent two axis points of the tubes of the other row.
Abstract:
A process for after-purifying a kieserite mixture pre-concentrated electrostatically across a number of stages is characterized in that the outside air used in the after purification stage is adjusted by dehumidification in a conventional dehumidification plant to an absolute moisture of 4.5 g/m.sup.3, and the kieserite mixture to be separated by triboelectrically charging with said air at a temperature of below 40.degree. C.
Abstract translation:用于将多个阶段静电预浓缩的硅藻土混合物后净化的方法的特征在于,在常规除湿设备中通过除湿调节后净化阶段中使用的外部空气至绝对湿度为4.5g / m 3, 并将赤铁矿混合物通过在低于40℃的温度下与所述空气摩擦电荷分离。
Abstract:
The present invention relates to a method for the production of coated magnesium hydroxide particles, whereby the individual primary magnesium hydroxide particles are coated. According to the invention, specific additives are added to the precipitation reaction for obtaining the magnesium hydroxide particles, in order to obtain these magnesium hydroxide particles in a coated state. Furthermore, a first method step of the present invention is directed at a method for the production of coarse-scale or nanoscale, coated magnesium hydroxide suspensions or dispersions. In a second method step, the coated magnesium hydroxide particles can be converted to de-agglomerated products either by means of bead-mill grinding or ultrasound and a dispersant. Finally, the present invention is directed at coated magnesium hydroxide particles, particularly nanoscale, coated magnesium hydroxide particles that can be obtained in this manner.
Abstract:
The present invention relates to a method for the production of curable masses, containing coarse-scale and/or nanoscale, coated, de-agglomerated magnesium hydroxide particles. More precisely, the present invention relates to a method for the production of curable masses, whereby coarse-scale and/or nanoscale, precoated magnesium hydroxide particles in an aqueous or organic solvent are treated with ultrasound or subjected to bead-mill grinding in the presence of a dispersant. After any drying that might be necessary, and renewed suspension/dispersion in an organic solvent, the magnesium hydroxide particles are worked into a component of a curable mass. Furthermore, the present invention is directed at a method for the production of a cured polymer material. Finally, the present invention makes available curable masses, polymer materials produced from them, particularly duroplastics or thermoplastics, as well as composite material containing curable masses or polymer materials produced according to the invention, as well as reinforcement agents.
Abstract:
A method for the production of Mg(OH)2 nanoparticles, by means of polyol-mediated synthesis, from an Mg precursor as well as a base. The particles produced with this method have a diameter between 10 nm to 300 nm, have a mono-disperse particle distribution, and are present in non-agglomerated form. They can be converted to MgO particles by means of calcination.
Abstract:
A method for the production of Mg(OH)2 nanoparticles, by means of polyol-mediated synthesis, from an Mg precursor as well as a base. The particles produced with this method have a diameter between 10 nm to 300 nm, have a mono-disperse particle distribution, and are present in non-agglomerated form. They can be converted to MgO particles by means of calcination.
Abstract translation:通过多元醇介导的合成从Mg前体以及碱生产Mg(OH)2 N 2纳米颗粒的方法。 用该方法生产的颗粒具有10nm至300nm的直径,具有单分散颗粒分布,并且以非聚集形式存在。 它们可以通过煅烧转化为MgO颗粒。
Abstract:
Plastic mixtures, in particular those of a smilar density such as polyethylene terephthalate and polyvinyl chloride, are separated electrostatically, whereby the mixture, for triboelectric charging, is subjected to a thermal treatment.
Abstract:
The present invention concerns a method for the purification and/or electrolysis of an aqueous potassium chloride solution, in which the sulphate ions are removed from the aqueous potassium chloride solution by precipitation as potassium sulphate and/or as a potassium sulphate-containing salt mixture and/or as a potassium sulphate-containing compound.
Abstract:
Plastic mixtures are split up into the individual components by a process combining density separation with electrostatic separation, and includes a special surface treatment which takes place prior to the electrostatic separation.