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A repair method for continuous fiber reinforced thermoplastic refrigerated container inner liner

A technology for strengthening thermoplastic and refrigerated containers, applied in the field of polymer materials, can solve the problems of inability to meet the requirements of sheet use, no better repair method, large size, etc., and achieve the effects of small performance degradation, low price, and simple equipment

Active Publication Date: 2019-01-18
集威新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the use of refrigerated trucks and refrigerated containers, it is often necessary to use a forklift to fork out the goods from the box. In order to prevent the forklift from damaging the inner wall of the box, an anti-collision plate is usually provided at the bottom of the side plate to reduce damage during use. Damage to the inner wall of the box, but still avoid damage to the surface of the board, such as scratches, breakage, breakage and other problems, these problems will gradually expand, and then cannot meet the use requirements of the board
Due to the large size and high cost of the container liner, the repair of the defects of the continuous fiber reinforced thermoplastic reefer liner has been paid attention to by people. However, the domestic continuous fiber reinforced thermoplastic composites have just started. There is no special method for repairing plates, so related repair technologies need to be solved urgently
Due to the relatively cheap price of thermoplastics, there is no good repair method for thermoplastic sheets, or short and long fiber reinforced thermoplastic sheets, and then they are directly discarded after damage, causing a lot of waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Method for repairing scratches on the surface of the lining board of a refrigerated container

[0024] First, place the board with scratches on the surface horizontally to make the scratches appear. Use industrial alcohol to wipe the scratches. After the alcohol is dry, take out a clean PTFE fiberglass cloth and cover it. For the scratches on the board, the PTFE fiberglass cloth on the surface of the board should be clean and smooth, and the other side should be clean and free of impurities. Use a high-temperature industrial iron heated to 300°C to smooth the scratches covered with the PTFE fiberglass cloth. The smoothing time for each scratch is 5s, and then after it cools to 80°C, peel off the PTFE fiberglass cloth and observe that the surface of the board is flat, leaving slight marks and no scratches, and the board repair is completed.

Embodiment 2

[0025] Example 2: Repair method for surface damage of lining board of refrigerated container

[0026] First, place the damaged board horizontally to make the damaged area appear. Use industrial alcohol to wipe the damaged area. After the alcohol dries, take out the continuous fiber reinforced thermoplastic prepreg tape and cut it to a size similar to the damaged area. , Its size is smaller than the damaged size, and then put it into the damaged place, use a hot air torch, set the temperature to 350 ℃ to preheat the damaged place, and stop preheating after the prepreg at the damaged place softens.

[0027] Then use a hot melt glue gun to inject hot melt resin into the damaged area, and then take out the clean PTFE fiberglass cloth. The PTFE fiberglass cloth on the scratched surface of the board should be clean and smooth. The other side It needs to be clean and free of impurities. Use a high-temperature industrial electric iron heated to 300℃ to smooth the hot melt adhesive covered...

Embodiment 3

[0028] Example 3: Repair method for the surface matrix of the lining board of the refrigerated container

[0029] First, place the plate horizontally to make the damaged part appear, and cut the damaged part of the lining plate of the refrigerated container to cut the gap into a square shape. Choose a continuous fiber reinforced thermoplastic plate of the same material as the lining plate of the refrigerated container. Cut it so that the length and width of the cut size are larger than the 60mm patch that destroys the notch size of the inner liner board. The cut patch can cover the defect and is slightly larger than the defect. Pour alcohol on the clean cloth, soak the cloth with alcohol, and wipe clean the defects and the parts that need to be welded with the soaked cloth. After the alcohol is dry, adjust the temperature of the plastic welding machine to 600°C, and heat the welding surface of the patch with the substrate at a speed of 2m / min. After the welding is completed, wait...

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PUM

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Abstract

The invention discloses a repairing method of a continuous fiber reinforced thermoplastic reefer container lining board. The method comprises the following steps: confirming the problem type of the continuous fiber reinforced thermoplastic reefer container lining board, carrying out surface treatment on a damaged board surface by using a cleaning agent, covering the damaged board surface with a polytetrafluoroethylene glass fiber cloth, a continuous fiber reinforced thermoplastic prepreg tape, a continuous fiber reinforced thermoplastic board or thermal resin according to the type of the reefer container lining board, repairing the damaged surface by using a hot melt cementing technology, cooling the lining board, taking out superfluous foreign materials, and cleaning the surface of the repaired and cooled lining board to complete board repairing. Requirements of raw materials and devices in the method and selection of the above prepreg material and the above hot melt repairing technology are low, so the devices have the advantages of simplicity, low price, low technologic requirements and simplicity in operation. The method has the advantages of strong pertinence, small reduction of performances of the repaired lining board, prolongation of the service life of the lining board, reduction of the use cost of the above product, suitableness for repairing other thermoplastic boards, and wide application range.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to the repair of thermoplastic plates, in particular to a method for repairing continuous fiber reinforced thermoplastic refrigerated container lining plates. Background technique [0002] At present, cold chain logistics uses refrigerated containers and refrigerated trucks with refrigerated containers in large quantities, among which refrigerated trucks are used for the logistics of refrigerated products on inland roads, and refrigerated containers are used for international maritime logistics. [0003] The inner walls of traditional refrigerated trucks and refrigerated containers are made of aluminum plates or stainless steel plates, which are not only heavy and expensive, but also have a fast heat transfer rate, which is not conducive to keeping cold storage low. The new generation of refrigerated trucks and refrigerated containers have begun to use composite materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/10B29K101/12B29K309/08
CPCB29C73/10B29K2101/12B29K2309/08
Inventor 周海燕
Owner 集威新材料科技有限公司