Anti-ultraviolet repair material as well as preparation method and application thereof

Abstract

The invention discloses an anti-ultraviolet repair material as well as a preparation method and application thereof. The preparation method of the repair material comprises the following steps: modifying an inorganic ultraviolet light screening agent with cyclodextrin; subjecting a guest molecule and thionyl chloride to a substitution reaction, reacting a product with hydroxyethyl methacrylate and triethylamine, subjecting the obtained guest molecule with a double-bond structure and a beta-cyclodextrin modified inorganic ultraviolet screening agent to clathration and freeze-drying to obtain a host-guest clathrate compound, then mixing the host-guest clathrate compound with an acrylic acid comonomer, an initiator, an accelerant and a reactive diluent, and carrying out polymerization reaction to obtain the anti-ultraviolet repair material. The anti-ultraviolet repair material disclosed by the invention not only has good ultraviolet light shielding capability and good light aging resistance, but also can automatically repair damage for multiple times, does not need external condition stimulation, can restore original performance, prolongs the service life of a cable sheath, and saves the cost of power grid construction and operation and maintenance.

Description

Technical field [0001] The present invention relates to the field of polymer materials, and more particularly to an ultraviolet repair material and a preparation method thereof. Background technique [0002] During the use of the cable sheathed, the effect of oxygen and ultraviolet rays, cracks, etc., result in a decrease in insulation performance and mechanical properties. At present, there are three maintenance methods for insulating material damage: 1) Filling in the microscopic defect, a repairing solution capable of polymerizing with moisture, generating a gelatin organic polymer, thus repairing defects; 2) by cracking, etc. The insulating material of the defect is filled, and the newly weld is used to bond the new material, and the heat shrink tube is sleeve in the defective area, and heat the sleeve to shrink into the packet defect. [0003] The disadvantages of the above three repair techniques are: 1) The repair fluid can only be polymerized with water, and the polymer r...

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Problems solved by technology

[0003] The disadvantages of the above three repair technologies are: 1) The repair fluid can only polymerize with water to generate polymer repair defects; 2) Heat welding repair can only repair thermoplastic defects; 3) The heat shrinkable tube will reduce the thickness of the insulating layer. increase, the difficulty of heat dissipation increases, and it is easy to cause local overheating; the heat-shrinkable tube shrinks to the tight package defect by heating, the heat-shrinkable tube and the base material are poorly sealed, and moisture is easy to penetrate through the connection, causing insulation breakdown

Secondly, the above three repair methods need to rely on accurate fault location technology. The fault point is affected by the positioning distance and the fault object, and it is difficult to accurately locate it.

Furthermore, conventional repair materials do not have the ability to absorb and shield ultraviolet light, and conventional repair techniques require excavation and covering, wire removal, and power outages, which seriously affect power production

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