CN-122011910-A - Environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil polyamine, preparation method and coating thereof

Abstract

The invention relates to the technical field of high polymer materials, and discloses an environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil polyamine, a preparation method and a coating thereof. The coating comprises a component A and a component B, wherein the raw material for preparing the component A comprises aliphatic isocyanate, a chain extender, an organic bismuth catalyst and a diluent, and the raw material for preparing the component B comprises transgenic soybean oil-based polyamine, a nano modifier, a thixotropic agent, an anti-aging agent and water. The invention adopts the biological-based raw material innovation, the weather-proof structural design, the insulation enhancement technology and the rapid curing system, and the finally obtained coating has better insulation effect and better bird damage prevention effect.

Inventors

• YANG YANG
• YE QIANJUN
• YANG GUANGHENG
• WU XIONG
• PENG XUDONG
• LIU LI
• WANG LIMIN
• HE WEI
• TANG CHAO
• WU HAO
• LU CAIXUAN

Assignees

• 国网电力科学研究院武汉南瑞有限责任公司

Dates

Publication Date

20260512

Application Date

20260204

Claims (10)

1. 1. An environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil polyamine is characterized by comprising a component A and a component B; Wherein the raw materials for preparing the component A contain aliphatic isocyanate, a chain extender, an organobismuth catalyst and a diluent; the raw materials for preparing the component B comprise transgenic soybean oil-based polyamine, a nano modifier, a thixotropic agent, an anti-aging agent and water.
2. 2. The environment-friendly weather-resistant polyurea bird damage-preventing insulating coating based on transgenic soybean oil polyamine according to claim 1, wherein the weight ratio of the component A to the component B is 1:1.2-1.5.
3. 3. The transgenic soybean oil polyamine-based environmentally friendly weatherable polyurea bird hazard insulation coating according to claim 1 or 2, wherein the aliphatic isocyanate is hexamethylene diisocyanate trimer and/or isophorone diisocyanate; the chain extender is double-end hydroxyl polytetrahydrofuran; The diluent is dibasic ester.
4. 4. The environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil-based polyamine according to claim 3, wherein the transgenic soybean oil-based polyamine is prepared by ring-opening reaction of epoxidized soybean oil and diethylenetriamine, and has a hydroxyl value of 150-200 mgKOH/g; the nano modifier is boron nitride nano sheet and/or hydrophobic fumed silica; the thixotropic agent is polyamide wax; the anti-aging agent contains a hindered amine light stabilizer HALS 770 and an ultraviolet absorber UV-327.
5. 5. The environment-friendly weather-resistant polyurea bird damage-preventing insulating coating based on transgenic soybean oil polyamine according to claim 1, wherein the total weight of aliphatic isocyanate, chain extender, organobismuth catalyst and diluent is 100%, the content of aliphatic isocyanate is 50-70%, the content of chain extender is 20-30%, the content of organobismuth catalyst is 0.1-0.5%, and the content of diluent is 9.5-20%; The total weight of the transgenic soybean oil-based polyamine, the nano modifier, the thixotropic agent, the anti-aging agent and the water is 100 percent, the content of the transgenic soybean oil-based polyamine is 60 to 80 percent, the content of the nano modifier is 3 to 5 percent, the content of the thixotropic agent is 1 to 3 percent, the content of the anti-aging agent is 2 to 4 percent, and the balance is water.
6. 6. The method for preparing the environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on the transgenic soybean oil polyamine according to any one of claims 1 to 5, which is characterized by comprising the following steps: mixing aliphatic isocyanate and a chain extender for reaction, then mixing the mixture with an organic bismuth catalyst and a diluent, and defoaming to obtain a component A; The method comprises the steps of carrying out ring-opening reaction on epoxidized soybean oil and diethylenetriamine under the catalysis of BF 3 ·Et 2 O, obtaining transgenic soybean oil-based polyamine after reduced pressure distillation and purification, mixing the transgenic soybean oil-based polyamine, a nano modifier, a thixotropic agent, an anti-aging agent and water, and sieving to obtain a component B.
7. 7. The process of claim 6, wherein the aliphatic isocyanate and the chain extender are mixed and reacted at 60 to 80 ℃ to a system having an-NCO content of 12 to 16%.
8. 8. The method of claim 6 or 7, wherein the molar ratio of epoxidized soybean oil to diethylenetriamine is 1:2-4; The weight ratio of BF 3 ·Et 2 O to the total weight of epoxidized soybean oil and diethylenetriamine is 0.5-2:100; The conditions of the ring-opening reaction comprise the temperature of 70-90 ℃ and the time of 2-4h.
9. 9. An environment-friendly weather-resistant polyurea bird damage prevention insulating coating, which is characterized by being prepared from the environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on the transgenic soybean oil polyamine according to any one of claims 1-5, and the preparation method comprises the following steps: And mixing the component A and the component B, spraying the mixture on the surface of the power transmission line, and curing to obtain the environment-friendly weather-resistant polyurea bird damage prevention insulating coating.
10. 10. The environmentally friendly weather-resistant polyurea bird damage resistant insulating coating according to claim 9, wherein the insulating strength of the environmentally friendly weather-resistant polyurea bird damage resistant insulating coating is not less than 22 kV/mm.

Description

Environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil polyamine, preparation method and coating thereof Technical Field The invention relates to the technical field of high polymer materials, in particular to an environment-friendly weather-resistant polyurea bird damage prevention insulating coating based on transgenic soybean oil polyamine, a preparation method and a coating thereof. Background With the deep implementation of the national ecological restoration strategy, birds in a power transmission corridor of a power system are increasingly frequent in activity, and damage to power equipment caused by bird damage is also possible to cause potential safety hazards such as power interruption and fire disaster. The traditional bird damage prevention coating is mainly made of epoxy resin or organic silicon materials, and has the defects of insufficient environmental protection, high VOCs (volatile organic compounds) in solvent system, benzene or heavy metal in curing agent, poor weather resistance, easy yellowing of aromatic polyurea, obvious attenuation of mechanical properties after ultraviolet irradiation, low utilization rate of biological base materials, high dependence of petroleum base materials, no requirement for sustainable development, complex construction process, special equipment for bi-component polyurea and poor single-component storage stability. Chinese patent application CN120699526a discloses an insulating paint for preventing bird damage and preventing foreign matter overlap and a preparation method thereof. The invention provides an insulating coating for preventing bird damage and foreign matter overlap joint, which comprises, by weight, 55-80 parts of methylsilane modified polyurethane liquid, 23-40 parts of polyamide fiber nano powder, 10-20 parts of organosilicon modified calcium lignosulfonate suspension, 8-10 parts of hydrophobic silica, 2-5 parts of a leveling agent, 1-2 parts of a pigment, 3-5 parts of an anti-aging agent and 10-15 parts of a diluent. The insulating paint has high insulating performance, pressure resistance up to 40kV or higher, pressure resistance up to 18kV, high strength, high toughness and excellent hydrophobicity and hydrophobic migration. However, the paint has weather resistance and ageing resistance limitation, and the long-acting performance can be attenuated. The Chinese patent application CN118325438A discloses an bird damage prevention insulation coating for an AC/DC filter, a coating and a preparation method thereof, wherein the insulation coating comprises, by weight, 3035% of polyurethane resin, 2630% of epoxy resin, 1015% of nano ceramic powder, 510% of inorganic filler, 23% of conductive carbon black, 12% of ultraviolet resistant agent, 12% of flame retardant and the balance of solvent. However, the long-term weather resistance and flame-retardant long-term effect of the coating may be insufficient. Disclosure of Invention The invention aims to overcome the problems in the prior art, and provides the environment-friendly weather-resistant polyurea anti-bird damage insulating coating based on the transgenic soybean oil polyamine, the preparation method and the coating thereof. In order to achieve the above object, the present invention provides, in one aspect, an environment-friendly weather-resistant polyurea bird damage-preventing insulating coating based on transgenic soybean oil polyamine, the coating comprising an a component (isocyanate prepolymer) and a B component (amine-based curing system); The preparation method comprises the steps of preparing a component A, wherein the raw materials comprise aliphatic isocyanate, a chain extender, an organic bismuth catalyst and a diluent, wherein the aliphatic isocyanate is used as a core curing agent of the component A and is subjected to cross-linking reaction with a hydroxyl compound of the component B to construct a polyurethane network structure, so that weather resistance, mechanical strength and electrical insulation performance of an insulating coating are provided, the chain extender is used for connecting aliphatic isocyanate with a matrix resin molecular chain to improve the cross-linking density of the coating and improve the flexibility, adhesive force and cracking resistance of the insulating coating, the organic bismuth catalyst is used for efficiently catalyzing the curing reaction of the isocyanate and the hydroxyl, reducing the curing temperature, shortening the curing time, protecting the environment, avoiding heavy metal toxicity and guaranteeing the performance stability of the coating, and the diluent is used for adjusting the viscosity of the component A to a proper construction range, improving the brush coating leveling property of spraying, and the like, and preventing volatilization or a small amount of residues after curing from affecting the insulating performance of the coating. The raw materials for