A kind of acrylate monomer and its preparation method and acrylate monomer repair material and its application

Abstract

The invention provides an acrylate monomer and a preparation method thereof, an acrylate monomer repair material and an application thereof, and belongs to the technical field of photocurable materials. The present invention provides an acrylate monomer, which has the chemical structure shown in formula I. In the formula I, R is H, Me or Et; R 1 is Me, Et or Pr; R' is H or Me. The repair material prepared by using the acrylate monomer provided by the invention can be quickly cured in a short period of time and has good mechanical strength after curing, and can be used to heal micro-cracks in the encapsulated insulation of dry-type hollow shunt reactors to realize micro-cracks effective repair. The experimental results show that the conversion rate of the double bond of the repair material prepared by the acrylate monomer provided by the present invention reaches 57.98% when it is illuminated for 60 seconds. MPa.

Description

technical field [0001] The invention relates to the technical field of light-curing materials, in particular to an acrylate monomer and a preparation method thereof, an acrylate monomer repair material and an application thereof. Background technique [0002] Dry-type air-core shunt reactors have the advantages of small maintenance, low cost, and easy installation. They are widely used in power systems. As important reactive power compensation equipment in substations, dry-type air-core shunt reactors are mainly used to provide inductive reactance power consumption. The excess capacitive reactive power of the system is used to maintain the voltage level of the power system, and its safe operation is directly related to the power quality and the safety of the power grid. Dry-type air-core shunt reactors are mostly made of glass fibers impregnated with epoxy resin to encapsulate and insulate the coil, and then cured at high temperature to complete. Since dry-type air-core shun...

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Problems solved by technology

Dry-type air-core shunt reactors are mostly made of glass fibers impregnated with epoxy resin to encapsulate and insulate the coil, and then cured at high temperature to complete. Since dry-type air-core shunt reactors were put into use in my country in the 1980s, dry-type Burning events of air-core shunt reactors occur from time to time. The reason is that all faulty dry-type air-core shunt reactors have different degrees of cracks in the envelope insulation, which leads to distortion of the electric field on the surface of the envelope, which in turn causes partial discharge, or is affected by rainwater in the environment. Corrosion of external conditions such as external conditions, resulting in inter-turn short circuit, which in turn causes the reactor to burn out

[0003] However, the problem of microcracks in the encapsulation insulation of dry-type air-core shunt reactors is an industry problem, and has not been paid attention to by universities and research institutions at home and abroad for a long time. There are few researches on the repair of microcracks in the encapsulation insulation. The existing technology such as the publication number is CN110862747A The invention patent disclosed a penetrating agent for encapsulating insulating microcrack repair, but its curing time is long, and it takes 3 days to cure at room temperature. At the same time, the mechanical properties of the cured material are poor, and the tensile shear strength is only 8MPa; the publication number is The invention patent of CN110606913A discloses an acrylic repair material, although its curing time is short, its bending strength after curing is low, only 88.37MPa

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