32results about How to "Partial elimination of the carboxyl group" patented technology

The invention relates to a marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a marine creep-resistant polyester high-strength low-elongation industrial yarn. According to the preparation method, polyester is tackified through solid phase polycondensation and then the tackified polyester is mixed with a fluorine-containing epoxy compound and a carbodiimide stabilizer to react so as to obtain the creep-resistant polyester hyperviscous slice; and the marine creep-resistant polyester high-strength low-elongation industrial yarn is prepared from the creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The marine creep-resistant polyester high-strength low-elongation industrial yarn provided by the invention has a certain creep resistance, hydrolysis resistance and stability, can be applied in a hot and humid environment for a long time, and has a huge application prospect in the fields of marine mooring ropes, fishing nets and the like.

The invention relates to a water-repellent creep-resistant polyester fully drawn yarn (FDY) fiber and a preparation method thereof. The preparation method comprises the preparation of a creep-resistant polyester melt and the preparation of the water-repellent creep-resistant polyester FDY fiber; polyester is blended or added with a fluorine-containing epoxy compound during polyester synthesizing to obtain the creep-resistant polyester melt; then the creep-resistant polyester melt is subjected to metering, extruding, cooling, oiling, stretching and winding to obtain the water-repellent creep-resistant polyester FDY fiber, wherein the oiling operation refers to the operation of coating the surface of the water-repellent creep-resistant polyester FDY fiber with water repellents. The water-repellent creep-resistant polyester FDY fiber has certain creep resistance, hydrolysis resistance and performance stability, can be used in a humid field environment or a high-temperature high-humidity environment for a long time, and has great prospect in the fields of plastic packaging, waterproof fabrics, ropes, mooring ropes, marine fibers and the like.

The invention relates to a creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a creep-resistant polyester ultralow-shrinkage industrial yarn. According to the preparation method, polyester is tackified through solid phase polycondensation and then the tackified polyester is mixed with a fluorine-containing epoxy compound to react so as to obtain the creep-resistant polyester hyperviscous slice; and the creep-resistant polyester ultralow-shrinkage industrial yarn is prepared from the obtained creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The obtained creep-resistant polyester ultralow-shrinkage industrial yarn has a certain creep resistance, hydrolysis resistance and performance stability, can be used in a hot and humid environment for a long time, and has a huge prospect in the fields of plastic packing, waterproof fabric, ropes, cables, marine fiber and the like.

The invention relates to a creep resistant polyester supplementary restraint system industrial yarn and a preparation method of the creep resistant polyester supplementary restraint system industrial yarn. The method comprises steps of preparation of creep resistant polyester high-viscosity slices and preparation of the creep resistant polyester supplementary restraint system industrial yarns, wherein the viscosity of the polyester is increased through solid phase polycondensation, then blending reaction is carried out on the polyester and fluorine-containing epoxy compound so as to obtain the creep resistant polyester high-viscosity slices; and the creep resistant polyester high-viscosity slices are prepared into the creep resistant polyester supplementary restraint system industrial yarns through metering, extruding, cooling, applying oil, stretching, thermoforming and winding. The creep resistant polyester supplementary restraint system industrial yarn has certain creep resistance, hydrolytic resistance and performance stability, can be used in high temperature and humidity environment for long time, and is applicable to airbag fabric.

The invention relates to creep-resistant polyester and its preparation method. According to the preparation method, polyester is mixed with a fluorine-containing epoxy compound or a fluorine-containing epoxy compound is added during the synthesis process of polyester. Then, the creep-resistant polyester can be obtained. By the use of the fluorine-containing epoxy compound for blocking modification of the polyester, creep-resistant performance of the polyester can be improved to some extent, and hydrolysis resistance and performance stability of the polyester can be raised. Fiber prepared from the creep-resistant polyester can be used in a hot and humid environment for a long time, and has a huge prospect in the fields of plastic packing, waterproof fabric, ropes, cables, marine fiber and the like.