Water-resistant low-smoke halogen-free flame-retardant polyolefin cable material and preparation method thereof

• Main Authors: WANG CHENG, WANG CHUANWEI, SONG JIANYUE, HUANG MINJIAN, WANG ZHIPENG
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses a water-resistant low-smoke halogen-free flame-retardant polyolefin cable material and a preparation method thereof, and belongs to the related technical field of cable materials. Dicumyl peroxide and vinyltrimethoxysilane are added in the process of preparing a mixture, and in the banburying and blending processing process, a matrix resin blending material with a part of cross-linked structure is subjected to heat treatment under the combined action of a cross-linking agent and a coupling agent, so that the heat resistance of the material is improved, and the service life of the material is prolonged. And meanwhile, the cable material obtained through a crosslinking reaction of the resin and a grafting reaction of the resin and silane improves the mechanical property and the water resistance of the material. Moreover, the thermoplastic dynamic vulcanized rubber with the partial gel content of 42%-48% is added into the matrix resin, so that the stability of a three-dimensional network