| 摘要 |
FIELD: engineering industry. ^ SUBSTANCE: invention refers to plastic tubes, and to usage of the above tubes for transporting gases and liquids. Tube is made from polyolefin obtained in a single-line device on chrome catalytic agent applied to silicate xerogel with diameter of particles of 20 to 2000 mcm, which is activated with air and modified with inorganic fluorinating agent. Hydrogel of silicon oxide the solid matter content of which is 10 to 25% as to mass (in terms of SiO2), and the shape of particles whereof is mainly spherical, and which is treated with spirit, is used as silicate xerogel. Plastic tubes using the above polyolefins can be extruded with high speeds because polyolefins, according to invention, have balanced ratio of processability and mechanical properties. ^ EFFECT: obtaining the possibility of extruding tubes with high speeds. ^ 9 cl, 2 tbl, 2 ex |
