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A kind of nozzle hole sealing material and preparation method and sealing method thereof

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: 2022-08-05
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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  • A kind of nozzle hole sealing material and preparation method and sealing method thereof

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Effect test

preparation example Construction

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

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

[0071] The first mixture is added to a pressurized container filled with liquid carbon dioxide, and mixed to obtain component A.

[0072] In the specific implementation, the polymer polyol, pore-opening aid, water, flame retardant, and catalyst are added to the mixing equipment, and stirred at a stirring speed of 400-800 R / min to obtain the first mixture, and then the first mixture is mixed. Add it into a pressurized container containing liquid carbon dioxide, pressurize the pressurized container, and keep the pressure value in the pressurized container at 4-6 MPa to obtain component A. Another convenience, the specific method for realizing the full mixing of the A component, also includes: when the A component needs to be spra...

preparation example 1

[0079] Preparation Example 1 (adding according to specific quality)

[0080] 60 g of polyoxypropylene triol with a hydroxyl value of 33 mgKOH / g and a number-average molecular weight of 4800, 2 g of stearyloxydimethylsilane, 1 g of water, 25 g of tris(2-chloropropyl) phosphate, and 3 g of stannous octoate Add it to the mixing equipment, and stir at a stirring speed of 600R / min to make it evenly mixed to obtain the first mixture;

[0081] The obtained first mixture was added to a pressurized container containing 9 g of liquid carbon dioxide, and the pressure was continued to 5 MPa, and mixed to obtain A component No. 1.

preparation example 2

[0082] Preparation Example 2 (feeding by weight percentage)

[0083] The polyether polyol 330N (manufacturer: Shandong Dongdayi Novi) 66.3%, the opening aid Y1900 (manufacturer: South 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%, added to the mixing equipment, at 400R / min Stir at the stirring speed to make it evenly mixed to obtain the first mixture;

[0084] The obtained first mixture was added to a pressurized container containing 10% liquid carbon dioxide (manufacturer: Langfang Liming Gas Co., Ltd.), continued to be pressurized to 4 MPa, and mixed to obtain A component No. 2.

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Abstract

The invention provides a nozzle hole sealing material and a preparation method and sealing method thereof. The material includes a vacuum water-soluble film and a water-tight material; wherein, the vacuum water-soluble film seals the water-tight material and compresses the water-tight material in a vacuum; and the water-tight material swells into a gel that seals the orifice hole under the action of water according to the structure of the orifice hole. . In the invention, the watertight material is vacuum-compressed and encapsulated by the vacuum water-soluble film to minimize the volume of the watertight material, so that the final hole sealing material can be placed in the hole with a small volume, and the purpose of simplifying the construction operation is achieved. At the same time, through the use of the vacuum water-soluble film, the hole sealing material can be automatically melted after encountering water, and then the watertight material is exposed to the water in the environment, so as to realize the sealing of the hole by the watertight material. Therefore, when the hole sealing of the present invention is used After the material is placed in the hole, the hole can be sealed without human intervention.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a nozzle hole sealing material and a preparation method and sealing method thereof. Background technique [0002] Building structure waterproof material is an important functional material. In the field of electric power, urban pipe gallery, and tunnel, high requirements are put forward for the waterproof ability of building structures. However, because the substation structure often has cables passing through, and these passing points become water leakage points, special requirements are put forward for the waterproof material applied to the cable passing through the pipeline. [0003] The existing pipeline waterproof products mainly include two categories. The first category is mechanical sealing device products, the common ones are cable flange flexible blocking devices, and air bag devices; the second category is sealing material products (including organic sealing materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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