Pipe orifice hole sealing material and preparation method thereof, and sealing method

A technology of sealing materials and holes, which is applied in the field of materials, can solve problems such as difficulty in demolition, weakening of stress, loss of sealing effect, etc., and achieve the effect of simplifying construction operations and reducing volume

Active Publication Date: 2021-12-10
STATE GRID E COMMERCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first type of mechanical sealing device products has the advantages of fast construction, easy dismantling, and mass production. The disadvantage is that it cannot adapt to the complex and changeable cable crossing environment, and it is difficult to adapt to eccentric cables and multi-strand cables. With the delay after installation, the internal stress will gradually weaken, and it needs to be constantly inspected, maintained and strengthened
Therefore, it has higher requirements and costs for construction and maintenance.
[0005] The second type of sealing material products has the advantage of better adaptability to complex and changeable cable passing environments, eccentric cables, and multi-strand cables, but because it is formed on site, it has the following disadvantages: difficult to remove, and difficult And the cleanliness of the interface (no water, dry, no rust) has high requirements
Minor operating errors may cause leakage, and at the same time, after being stepped on, squeezed and other external forces, the sealing effect may be permanently lost

Method used

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  • Pipe orifice hole sealing material and preparation method thereof, and sealing method

Examples

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preparation example Construction

[0069] In this embodiment, optionally, the preparation method of component A includes:

[0070] Add polymer polyol, cell opening aid, water, flame retardant, and catalyst into the mixing equipment and mix evenly to obtain the first mixture;

[0071] Add the first mix to a pressurized vessel with liquid carbon dioxide and mix to obtain the A component.

[0072] During specific implementation, polymer polyols, cell opening aids, water, flame retardants, and catalysts are added to the mixing equipment and stirred at a stirring speed of 400 to 800 R / min to obtain the first mixed material, and then the first mixed material Add it into a pressurized container filled with liquid carbon dioxide, pressurize the pressurized container, and keep the pressure in the pressurized container at 4-6 MPa to obtain component A. Another convenience, the specific method to realize the thorough mixing of component A, also includes: when it is necessary to spray component A, at the outlet of the pre...

preparation example 1

[0079] Preparation example 1 (feeding is carried out by specific quality)

[0080] With hydroxyl value 33mgKOH / g, number average molecular weight is the polyoxypropylene triol 60g of 4800, stearoxy dimethyl silane 2g, water 1g, three (2-chloropropyl) phosphate 25g, stannous octoate 3g Add it into the mixing equipment, stir at a stirring speed of 600R / min, make it mix evenly, and obtain the first mixed material;

[0081] Add the obtained first mixed material into a pressurized container containing 9 g of liquid carbon dioxide, continue to pressurize to 5 MPa, and mix to obtain A component No. 1.

preparation example 2

[0082] Preparation example 2 (feeding is carried out by weight percentage)

[0083] Polyether polyol 330N (manufacturer: Shandong Dongda Yi Nuowei) 66.3%, cell opening additive Y1900 (manufacturer: Korea SKC Company) 1%, water (self-made), flame retardant dmmp (manufacturer Qingdao Lianmei Chemical) 20%, catalyst A33 (manufacturer: Xindian Chemical Materials (Shanghai) Co., Ltd.) 1.5%, stannous octoate (manufacturer: Xindian Chemical Materials (Shanghai) Co., Ltd.) 0.2%, add in the mixing equipment, with 400R / min Stir at a stirring speed to make it evenly mixed to obtain the first mixed material;

[0084] Add the obtained first mixture into a pressurized container filled with 10% liquid carbon dioxide (manufacturer: Langfang Liming Gas Co., Ltd.), continue to pressurize to 4MPa, and mix to obtain A component No. 2.

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Abstract

The invention provides a pipe orifice hole sealing material and a preparation method thereof, and a sealing method. The material comprises a vacuum water-soluble film and a watertight material. The vacuum water-soluble film seals the watertight material and compresses the watertight material in vacuum. Under the action of water, the watertight material expands to form gel for sealing a pipe orifice hole according to the structure of the pipe orifice hole. The watertight material is subjected to vacuum compression packaging through the vacuum water-soluble film, so that the size of the watertight material is reduced to the maximum extent, the finally obtained hole sealing material can be placed in a hole in a small size, and the purpose of simplifying construction operation is achieved. Meanwhile, through the use of the vacuum water-soluble film, the hole sealing material can be automatically dissolved after encountering water, and then the watertight material is exposed in the water in the environment, so that the sealing of the hole by the watertight material is realized. After the hole sealing material is placed in the hole, the hole can be sealed without manual operation.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a nozzle hole sealing material, a preparation method and a sealing method thereof. Background technique [0002] Waterproof material for building structure is an important functional material. In the field of electric power, urban pipe corridors, and tunnels, high requirements are placed on the waterproof ability of building structures. However, because the structure of the distribution station often has cables passing through, and these passing points become water leakage points, special requirements are put forward for the waterproof materials applied to the parts where the cables pass through the pipeline. [0003] Existing pipeline waterproofing products mainly include two types. The first category is mechanical sealing device products, the common ones are cable flange flexible sealing device, and inflatable bag device; the second category is sealing material products (in...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L29/04C08L1/28C08L33/02C08G18/48C08J9/08C08J9/12C08G101/00
CPCC08G18/4829C08J9/08C08J9/122C08J9/0061C08J2203/184C08J2375/08C08J2203/02C08J2203/06C08J2429/04C08J2401/28C08J2433/02
Inventor 袁振李超王雨辰赵凌霄王少华王宇川张海凤
Owner STATE GRID E COMMERCE CO LTD
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