Elastomer-coated calcium-carbonate-filled carbon-fiber-reinforced polyethylene composite material

Abstract

The invention discloses an elastomer-coated calcium-carbonate-filled carbon-fiber-reinforced polyethylene composite material which is composed of the following components in percentage by mass: 60-80% of polyethylene, 8-15% of nano calcium carbonate, 1-2% of diisocyanate, 2-4% of ethylene glycol, 10-25% of surface-modified carbon fiber, 3-8% of compatilizer, 0-2% of dispersing agent and 0.1-1% of antioxidant. Compared with the prior art, the diisocyanate and ethylene glycol are mixed in the mixing machine and subjected to addition polymerization to generate the polyurethane elastomer, and the polyurethane elastomer is coated on the nano calcium carbonate surface to form the core-shell structure using the nano calcium carbonate as the core and the elastomer as the shell, thereby displaying the respective advantages and performing favorable synergic reinforcing and toughening effects on the polyethylene. The carbon fiber is adopted for reinforcing modification to further enhance the mechanical properties, heat resistance, abrasion resistance, corrosion resistance, processability and the like of the material, so that the composite material has favorable application value.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an elastomer-coated calcium carbonate-filled carbon fiber-reinforced polyethylene composite material. Background technique [0002] Polyethylene (PE) is a light, non-toxic, thermoplastic material with excellent electrical insulation properties and chemical corrosion resistance. It is cheap and easy to form and process. It is widely used in electrical appliances, chemicals, food, machinery and other industries. However, because polyethylene also has disadvantages such as poor impact strength and brittle fracture, it is difficult to meet the needs of some fields. Carbon fiber has the characteristics of high strength, low density, high temperature resistance, water resistance, and corrosion resistance. It is an excellent high-strength reinforcing material and has been widely used in various fields of military and civilian industries. , machinery, chemical industry, textil...

AI Technical Summary

Problems solved by technology

Carbon fiber reinforced polyethylene has very high specific strength, but due to the smooth surface of carbon fiber, less active functional groups, low surface energy, surface chemical inertness, and poor wettability with resin matrix, the interface adhesion of composite materials is weak, which seriously affects the The overall excellent performance of composite materials, and the chemical inertness of polyethylene also makes the adhesion between carbon fiber and matrix resin poor, thus affecting the transfer of stress