Abstract:
The object of the invention is a method for manufacturing of elongated multi-wall profiles from polyvinyl chloride, comprising the steps of preparing at least two mixes comprising powdered polyvinyl chloride in the amount of 82% by weight, a stabilizer in the amount of 3% by weight, chalk in the amount of 7% by weight, titanium white in the amount of 3% by weight and acrylic modifier in the amount of 5% by weight, mixing in a temperature of 120°C and cooling to the temperature of 35°C. From the mixes multi-wall profiles are extruded in a coextrusion process. The method further comprises the steps of preparing a basic mix comprising 82% of raw powdered polyvinyl chloride and preparing a treated mix comprising 82% of raw powdered polyvinyl chloride mixed with treated powdered polyvinyl chloride in a ratio of 1:10. The treated powdered polyvinyl chloride is prepared in such a way that to the raw powdered polyvinyl chloride silver nanoparticles are implanted such that the powdered polyvinyl chloride is subject to alternate operations of coating with a colloidal solution of silver nanoparticles having a size from 50nm to 60nm in isopropanol at a concentration of 1000ppm by weight and drying at a temperature below 70°C until the concentration of silver nanoparticles in the treated powdered polyvinyl chloride reaches a value from 120 ppm to 600 ppm by weight. From the treated mix the external layer having a thickness from 0,5mm to 1mm of at least part of the external walls of the profile is extruded.
Abstract:
A method for manufacturing of polyethylene regranulate, characterized in that to a raw polyethylene regranulate silver nanoparticles are implanted in such a way that the raw regranulate is subject to alternate steps of coating the regranulate with a colloidal solution comprising: a hydrocarbon with a boiling point below 70°C: from 98% to 99.6% by weight, a surfactant reducing surface tension: from 0.1% to 0.5% by weight; an adhesive agent: from 0.1% to 0.5% by weight; a dispersant: from 0.1% to 0.5% by weight; a viscosity modifier: from 0.1% do 0,5% by weight; silver nanoparticles in a paraffin shell having a size from 3 nm to 8 nm and in concentration of 50,000 ppm, and drying the coated regranulate at a temperature below 70°C, until the silver nanoparticles in the regranulate reaches the concentration of 500 ppm to 1000 ppm by weight.
Abstract:
A method for manufacturing of bactericidal colloids from a colloidal nanosilver concentrate. Performing the following steps in separate branches of a technology line: drying, in a vacuum dryer, the colloidal nanosilver concentrate with particles having a size from 3 nm to 8 nm to obtain a dry matter, placing the dry matter in a quartz vacuum chamber of a reactor heated by a resistance wire, heating the chamber to the temperature of 180°C-210°C, sucking out, by a vacuum pump, evaporations in order to purify the dry matter from pollutants during 1-2 hours, and next mixing the purified dry matter, using a magnetic stirrer, with an alcohol at a ratio of 1:10 during about 1 hour, and then drying the mixture in a vacuum dryer to obtain a dry matter, mixing the dry matter, in a magnetic stirrer during about 1 hour, with a solvent selected for a given branch of the technology line, preferably selected from a group comprising: distilled water, alcohols, paraffin oil, paraffin compounds, liquid aliphatic hydrocarbon compounds, in the amount providing concentration of nanosilver up to 5,000 ppm, and next pouring the mixture into a sonicator tank, and homogenising the mixture using an ultrasound probe with an operating frequency of 20 kHz during 5 to 10 minutes.
Abstract:
The object of the invention is a method for manufacturing of elongated multi-wall profiles from polyvinyl chloride, comprising the steps of preparing at least two mixes comprising powdered polyvinyl chloride in the amount of 82% by weight, a stabilizer in the amount of 3% by weight, chalk in the amount of 7% by weight, titanium white in the amount of 3% by weight and acrylic modifier in the amount of 5% by weight, mixing in a temperature of 120°C and cooling to the temperature of 35°C. From the mixes multi-wall profiles are extruded in a coextrusion process. The method further comprises the steps of preparing a basic mix comprising 82% of raw powdered polyvinyl chloride and preparing a treated mix comprising 82% of raw powdered polyvinyl chloride mixed with treated powdered polyvinyl chloride in a ratio of 1:10. The treated powdered polyvinyl chloride is prepared in such a way that to the raw powdered polyvinyl chloride silver nanoparticles are implanted such that the powdered polyvinyl chloride is subject to alternate operations of coating with a colloidal solution of silver nanoparticles having a size from 50nm to 60nm in isopropanol at a concentration of 1000ppm by weight and drying at a temperature below 70°C until the concentration of silver nanoparticles in the treated powdered polyvinyl chloride reaches a value from 120 ppm to 600 ppm by weight. From the treated mix the external layer having a thickness from 0,5mm to 1mm of at least part of the external walls of the profile is extruded.
Abstract:
A method for manufacturing of polypropylene pipes from granulated polypropylene in the process of extrusion moulding. A mixture of granulated polypropylene containing treated granulate and raw granulate at the ratio of 1:10 is extruded, wherein the treated granulate is prepared by implanting silver nanoparticles to raw granulate in such a way that the raw granulate is subject to alternate steps of coating the granulate with a colloidal solution comprising: a hydrocarbon with a boiling point below 70°C: from 98% to 99.6% by weight, a surfactant reducing surface tension: from 0.1% to 0.5% by weight; an adhesive agent: from 0.1% to 0.5% by weight; a dispersant: from 0.1% to 0.5% by weight; a viscosity modifier: from 0.1% do 0,5% by weight; silver nanoparticles in a paraffin shell having a size from 3 nm to 8 nm and in concentration of 50,000 ppm, and drying the coated granulate at a temperature below 70°C, until the silver nanoparticles in the granulate reaches the concentration of 500 ppm to 1000 ppm by weight, wherein at least the external layer of pipe is extruded from the mixture.