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Acrylate monomer, preparation method of acrylate monomer, acrylate monomer repairing material and application of acrylate monomer repairing material

A technology of acrylate and repair materials, which is applied in the preparation of carboxylate esters, chemical instruments and methods, and the preparation of organic compounds, and can solve problems such as erosion, poor mechanical properties of materials, and cracks in encapsulated insulation

Active Publication Date: 2021-06-01
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Acrylate monomer, preparation method of acrylate monomer, acrylate monomer repairing material and application of acrylate monomer repairing material
  • Acrylate monomer, preparation method of acrylate monomer, acrylate monomer repairing material and application of acrylate monomer repairing material
  • Acrylate monomer, preparation method of acrylate monomer, acrylate monomer repairing material and application of acrylate monomer repairing material

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preparation example Construction

[0035] The present invention provides the preparation method of acrylate monomer described in above-mentioned technical scheme, comprises the following steps:

[0036] (1) Coupling reaction of biomass raw materials with acid and aldehyde-based monomers to obtain bio-based bisphenols;

[0037] (2) Carrying out the ring-opening etherification reaction of the bio-based bisphenol obtained in the step (1) with the catalyst and epichlorohydrin, then adding solvent and sodium hydroxide to carry out the ring-closing reaction to obtain the bio-based epoxy resin;

[0038] (3) The bio-based epoxy resin obtained in the step (2) is subjected to ring-opening reaction with triphenylphosphine, hydroquinone and acrylic monomer to obtain acrylate monomer.

[0039] Unless otherwise specified, the present invention has no special limitation on the sources of the above-mentioned components, and commercially available products or products prepared by conventional preparation methods well known to t...

Embodiment 1

[0089](1) Under nitrogen protection, in a three-necked flask equipped with mechanical stirring, a thermometer and a reflux condensing device, add 0.22mol of 4-methylguaiacol and 7mL of 85% phosphoric acid (the substance of 4-methylguaiacol The volume ratio of the amount of phosphoric acid and phosphoric acid is 0.22mol:7mL), after stirring at 200r / min for 5min, the temperature is raised to 50°C, the system is kept at a constant temperature for 30min, and an aqueous solution of 0.1mol formaldehyde is added dropwise (the mass concentration of formaldehyde is 37%, 4-methyl The ratio of the amount of guaiacol and formaldehyde is 2.2:1, the dropping rate is 8s / 0.05mL), the temperature is raised to 90°C for 6h, and a golden red product is obtained. After the product is lowered to room temperature, it is washed with water until neutral, and Toluene was used as solvent for recrystallization, followed by column chromatography to obtain a white crystal product, bio-based bisphenol BCF-BP...

Embodiment 2

[0095] (1) Under nitrogen protection, in a three-necked flask equipped with mechanical stirring, a thermometer and a reflux condensing device, add 0.22mol of 4-methylguaiacol and 7mL of 85% phosphoric acid (the substance of 4-methylguaiacol The volume ratio of the amount of phosphoric acid and phosphoric acid is 0.22mol:7mL), after stirring at 200r / min for 5min, the temperature is raised to 50°C, the system is kept at a constant temperature for 30min, and an aqueous solution of 0.1mol formaldehyde is added dropwise (the mass concentration of formaldehyde is 37%, 4-methyl The ratio of the amount of guaiacol and formaldehyde is 2.2:1, the dropping rate is 8s / 0.05mL), the temperature is raised to 90°C for 6h, and a golden red product is obtained. After the product is lowered to room temperature, it is washed with water until neutral, and Toluene was used as solvent for recrystallization, followed by column chromatography to obtain a white crystal product, bio-based bisphenol BCF-B...

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Abstract

The invention provides an acrylate monomer, a preparation method of the acrylate monomer, an acrylate monomer repairing material and application of the acrylate monomer repairing material, belonging to the technical field of photocuring materials. The acrylate monomer provided by the invention has a chemical structure as shown in a formula I which is described in the specification. In the formula I, R is H, Me or Et; R1 is Me, Et or Pr; and R' is H or Me. The repairing material prepared from the acrylate monomer provided by the invention can be rapidly cured in a short time, has better mechanical strength after being cured, and can be used for healing of encapsulated insulation microcracks of a dry-type hollow shunt reactor to realize effective repairing of the microcracks. Experimental results show that the double bond conversion rate of the repairing material prepared from the acrylate monomer provided by the invention reaches 57.98% when the repairing material is illuminated for 60 s, and the cured material has bending strength of 114.99 MPa, bending modulus of 3.15 GPa and compression strength of 207.69 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/54C07C67/26C08F222/20C08F220/34
CPCC07C69/54C08F222/1025C08F222/102C08F220/34
Inventor 赵成吉孙一男林海丹张轶珠赵天成于群英杨代勇崔天城
Owner JILIN UNIV
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