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Fiber reinforced UV curing repair material and preparation method thereof

A repair material and fiber-reinforced technology, used in polyester coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor adhesion, difficult fusion of fibers and resins, and achieve reduced drying time, weakened polymerization inhibition, good strength and The effect of water resistance and corrosion resistance

Active Publication Date: 2022-04-12
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon fiber and aramid fiber can replace traditional glass fiber as a reinforcing material, it is difficult to fuse the fiber and the resin phase, and the bonding is poor. Therefore, the surface treatment of the fiber is required to improve the interfacial compatibility before it can be put into use.

Method used

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  • Fiber reinforced UV curing repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the fiber-reinforced UV curing repair material of the present invention specifically comprises the following steps:

[0023] (1) At 25°C, wash 3g of carbon fibers twice with 5mL of absolute ethanol, then three times with 5mL of deionized water, bake at 90°C for 2h, cool to room temperature, wash with 15g of 0.5wt.% lanthanum chloride aqueous solution Immerse for 3 hours to obtain activated carbon fibers, then immerse the activated carbon fibers in 15g of 10wt.% hydrogen peroxide aqueous solution, filter after immersion for 5 hours, and dry at 120°C for 3 hours to obtain modified carbon fibers;

[0024] (2) At 25°C, put 2g of aramid fibers in a vacuum reactor, raise the temperature to 200°C, evacuate until the pressure is less than -0.07Mpa, and fill with carbon tetrachloride and ammonia with a molar ratio of 12:1 to mix The gas pressure is 0.05Mpa, the RF electrode is at 60KV voltage, 4W / m 3 The power is discharged into the reactor for 1.5h. A...

Embodiment 2

[0031] The preparation method of the fiber-reinforced UV curing repair material of the present invention specifically comprises the following steps:

[0032] (1) At 25°C, wash 3g of carbon fibers twice with 5mL of absolute ethanol, then three times with 5mL of deionized water, bake at 90°C for 2h, cool to room temperature, wash with 15g of 0.5wt.% lanthanum chloride aqueous solution Immerse for 3 hours to obtain activated carbon fibers, then immerse the activated carbon fibers in 15g of 10wt.% hydrogen peroxide aqueous solution, filter after immersion for 5 hours, and dry at 120°C for 3 hours to obtain modified carbon fibers;

[0033] (2) At 25°C, put 2g of aramid fibers in a vacuum reactor, raise the temperature to 200°C, evacuate until the pressure is less than -0.07Mpa, and fill with carbon tetrachloride and ammonia with a molar ratio of 12:1 to mix The gas pressure is 0.05Mpa, the RF electrode is at 60KV voltage, 4W / m 3 The power is discharged into the reactor for 1.5h. A...

Embodiment 3

[0042] The preparation method of the fiber-reinforced UV curing repair material of the present invention specifically comprises the following steps:

[0043] (1) At 25°C, wash 3g of carbon fibers twice with 5mL of absolute ethanol, then three times with 5mL of deionized water, bake at 90°C for 2h, cool to room temperature, wash with 15g of 0.5wt.% lanthanum chloride aqueous solution Immerse for 3 hours to obtain activated carbon fibers, then immerse the activated carbon fibers in 15g of 10wt.% hydrogen peroxide aqueous solution, filter after immersion for 5 hours, and dry at 120°C for 3 hours to obtain modified carbon fibers;

[0044] (2) At 25°C, put 2g of aramid fibers in a vacuum reactor, raise the temperature to 200°C, evacuate until the pressure is less than -0.07Mpa, and fill with carbon tetrachloride and ammonia with a molar ratio of 12:1 to mix The gas pressure is 0.05Mpa, the RF electrode is at 60KV voltage, 4W / m 3 The power is discharged into the reactor for 1.5h. A...

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Abstract

The invention discloses a fiber reinforced UV curing repair material and a preparation method thereof. The repair material is prepared by mixing unsaturated polyester resin, reinforced fibers, a polymerization inhibitor, a photosensitizer and a diluent according to the mass ratio of 1: (0.04-0.07): (0.004-0.005): (0.04-0.05): (0.5-0.6). Wherein the reinforced fibers are obtained by ultrasonically compounding modified carbon fibers subjected to surface activation and oxidation treatment and aramid fibers subjected to low-temperature plasma surface modification under the dispersion action of a silane coupling agent; the unsaturated polyester resin is prepared by the following steps: firstly carrying out catalytic polycondensation on dihydric alcohol and saturated dibasic acid, then carrying out polycondensation with unsaturated dibasic acid again, carrying out end capping on the polycondensate to obtain unsaturated polyester resin, finally adding reinforced fibers, a photosensitizer, a polymerization inhibitor and a diluent into the unsaturated polyester resin, and compounding to obtain the fiber reinforced UV curing repair material. The repairing material disclosed by the invention has excellent chemical and mechanical properties, and has a good application prospect in the fields of ocean engineering, aerospace, municipal administration, tunnels, oil and gas transmission and the like.

Description

technical field [0001] The invention relates to a fiber-reinforced UV curing repair material and a preparation method thereof. Background technique [0002] UV curing trenchless pipeline repair technology has been rapidly developed and applied due to its advantages of fast repair speed, high repair quality, stability and reliability, and short plugging time during construction. With the development of society and economy, tunnels, oil and gas, offshore engineering and other fields put forward higher requirements for UV curing trenchless pipeline repair materials. The existing pipeline repair materials are increasingly difficult to meet the needs of the industry, and it is urgent to develop new pipeline repair materials. Material. [0003] Existing UV curing trenchless pipeline repair materials are mainly composed of resin and reinforcement materials. Although the unsaturated polyester resin currently used in the mainstream is cheap and easy to prepare in large quantities, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D5/08C09D7/20C09D7/62C09D7/65C08G63/91C08G63/181C08G63/78
Inventor 周钰明顾涛黄裕中张小红陈军吴宏亮卜小海何曼黄镜怡王润东
Owner SOUTHEAST UNIV
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