CN-121991557-A - Caliper self-diagnosis long-life sensing coating material and coating method thereof

Abstract

The invention relates to the field of supply and demand interaction of power systems and discloses a caliper self-diagnosis long-life sensing coating material and a coating method thereof, wherein the material comprises an energy conversion layer, and the energy conversion layer is prepared from the following raw materials in parts by mass: the coating method comprises the steps of S1, pretreatment and slurry configuration, S2, construction of a coating and sensing network, and S3, heating and curing to finish coating operation. According to the invention, mechanical vibration energy in a braking process can be converted into electric energy through the energy conversion layer formed by polyvinylidene fluoride, barium titanate and the like, electric energy supply is provided for a built-in sensing network, the self-supply of energy of the system is realized, an external power supply and wiring are not needed, and meanwhile, the integrated Bragg grating optical fiber and the conductive silver paste network can synchronously monitor two state parameters of strain and abrasion.

Inventors

• LIU XUELUN
• ZHU WENHUI

Assignees

• 安徽博行机械有限公司

Dates

Publication Date

20260508

Application Date

20260206

Claims (10)

1. 1. A caliper self-diagnostic long-life sensing coating material, comprising: the energy conversion layer is prepared from the following raw materials in parts by mass: 100 parts of polyvinylidene fluoride; 10-20 parts of silicon carbide; 1-5 parts of barium titanate; the protective layer is prepared from the following raw materials in parts by mass: 100 parts of polyvinylidene fluoride; 8-15 parts of self-lubricating microcapsules; and the sensing network is arranged between or in the energy conversion layer and the protective layer.
2. 2. The caliper self-diagnostic long-life sensing coating material of claim 1, wherein said sensing network comprises a bragg grating fiber for strain monitoring and a conductive silver paste network for wear monitoring.
3. 3. The caliper self-diagnostic long-life sensing coating material of claim 1, wherein said self-lubricating microcapsules comprise: 8.8-9 parts of core material; The core material comprises molybdenum disulfide and graphene; 3.0-4.0 parts of wall material; the wall material is polyurea and comprises toluene-2, 4-diisocyanate and ethylenediamine.
4. 4. The caliper self-diagnosis long-life type sensing coating material according to claim 3, wherein the mass ratio of the molybdenum disulfide to the graphene is (8-10): 1.
5. 5. A caliper self-diagnostic long-life sensing coating material of claim 3, wherein said toluene-2, 4-diisocyanate to ethylenediamine mass ratio is (2.6-2.8): 1.
6. 6. The caliper self-diagnosis long-life type sensing coating material of claim 1, wherein said barium titanate is tetragonal phase structured nano-particles having an average particle diameter of 50-100 nm.
7. 7. A method of coating a caliper self-diagnosing long-life sensing coating material according to any one of claims 1-6, comprising the steps of: S1, performing laser texturing pretreatment on the surface of a substrate, and respectively preparing slurry of an energy conversion layer and slurry of a protective layer; S2, coating the slurry of the energy conversion layer on the surface of the pretreated substrate to form an energy conversion layer, arranging a Bragg grating optical fiber and a printed conductive silver paste network on the energy conversion layer to form a sensing network, coating the slurry of the protective layer on the sensing network and the energy conversion layer to form a protective layer, and finishing the primary coating; And S3, heating and curing the primary coating after the coating is finished.
8. 8. The method for coating the caliper self-diagnosis long-life type sensing coating material according to claim 7, wherein in the step S1, the laser power of the laser texturing pretreatment is 25-45W, and the scanning speed is 800-1200mm/S.
9. 9. The method for coating a caliper self-diagnosis long-life sensing coating material according to claim 7, wherein in step S2, both the slurry of the energy conversion layer and the slurry of the protection layer are coated by spraying; The printing conductive silver paste network is arranged in a screen printing mode.
10. 10. The method for coating a caliper self-diagnosing long-life sensing coating material as recited in claim 7, wherein in step S3, said heat curing comprises: Firstly, preserving heat for 1-2 hours at 80 ℃; Then the temperature is raised to 140 ℃ and the heat preservation and solidification are carried out for 2 to 3 hours.

Description

Caliper self-diagnosis long-life sensing coating material and coating method thereof Technical Field The invention relates to the technical field of supply and demand interaction of a power system, in particular to a caliper self-diagnosis long-life sensing coating material and a coating method thereof. Background The vehicle brake caliper is a key component for guaranteeing driving safety, and is easy to cause structural fatigue, abnormal wear and other problems when working in high-temperature, high-frequency vibration and corrosive complex environments. Therefore, the real-time and effective monitoring of the working state of the caliper is of great significance for fault early warning and preventive maintenance. Currently, external sensors such as strain gauges and accelerometers are commonly used for condition monitoring of brake calipers and the like. However, such external sensing systems often require complex external cables to provide power and transmit data. Under the severe vibration and corrosion environment of the wheel end, fatigue fracture or poor contact of the cables is easy to occur, so that the long-term reliability of the whole monitoring system is affected. In addition, to fully assess the health of the caliper, it is often necessary to install sensors of multiple different functions in combination, further increasing the complexity of the system wiring and the difficulty of installation. Meanwhile, the sensor and the fixing structure thereof are directly exposed to high temperature and dust generated by braking, and corrosive media such as water and salt on the road surface, and the service life of the sensor is greatly limited. Although the prior art adopts wear-resistant coatings to protect components, the coatings only provide passive protection, can wear and finally fail, have no sensing function and cannot actively take protective measures according to working condition changes. Therefore, the prior art lacks a solution capable of integrating energy supply, multi-parameter sensing and long-term life guarantee, so as to fundamentally improve the reliability and durability of the monitoring system under severe working conditions. Disclosure of Invention The invention aims to provide a caliper self-diagnosis long-life sensing coating material and a coating method thereof, which solve the problems that in the prior art, a protective coating is separated from a sensing monitoring function, so that long-term abrasion protection, multi-parameter self-diagnosis and energy self-supply cannot be realized in a single coating system at the same time. In order to achieve the above purpose, the invention is realized by the following technical scheme: A caliper self-diagnostic long-life sensing coating material comprising: the energy conversion layer is prepared from the following raw materials in parts by mass: 100 parts of polyvinylidene fluoride; 10-20 parts of silicon carbide; 1-5 parts of barium titanate; the protective layer is prepared from the following raw materials in parts by mass: 100 parts of polyvinylidene fluoride; 8-15 parts of self-lubricating microcapsules; A sensor network arranged between or in the energy conversion layer and the protection layer Preferably, the sensing network comprises a Bragg grating optical fiber for monitoring strain and a conductive silver paste network for monitoring abrasion. Preferably, the self-lubricating microcapsules comprise: 8.8-9 parts of core material; The core material comprises molybdenum disulfide and graphene; 3.0-4.0 parts of wall material; the wall material is polyurea and comprises toluene-2, 4-diisocyanate and ethylenediamine. Preferably, the mass ratio of the molybdenum disulfide to the graphene is (8-10): 1. Preferably, the mass ratio of toluene-2, 4-diisocyanate to ethylenediamine is (2.6-2.8): 1. Preferably, the barium titanate is tetragonal phase structure nano-particles with the average particle diameter of 50-100 nm. A method for coating a caliper self-diagnosis long-life sensing coating material comprises the following steps: S1, performing laser texturing pretreatment on the surface of a substrate, and respectively preparing slurry of an energy conversion layer and slurry of a protective layer; S2, coating the slurry of the energy conversion layer on the surface of the pretreated substrate to form an energy conversion layer, arranging a Bragg grating optical fiber and a printed conductive silver paste network on the energy conversion layer to form a sensing network, coating the slurry of the protective layer on the sensing network and the energy conversion layer to form a protective layer, and finishing the primary coating; And S3, heating and curing the primary coating after the coating is finished. Preferably, in the step S1, the laser power of the laser texturing pretreatment is 25-45W, and the scanning speed is 800-1200mm/S. Preferably, in the step S2, both the slurry of the energy conversion layer and the slurry of the p