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A kind of non-curing polyurethane grouting material and preparation method thereof

A grouting material, polyurethane technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of reduced waterproof plugging effect, weak self-healing performance, secondary leakage, etc., and achieve good creep and self-healing Cohesive ability, good cohesive force and low viscosity

Active Publication Date: 2021-07-02
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polyurethane grouting materials have been widely used in the anti-seepage and plugging industry of construction projects. However, when polyurethane materials are used in deformation joints and other parts, if the gaps are deformed to a large extent in the later stage, the polyurethane materials are subject to stress due to their high body strength. Cause cracks between the material and the base material or the material body, and the self-healing performance is weak, which is easy to cause secondary leakage and reduce the effect of waterproof and plugging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a non-curing polyurethane grouting material, which consists of two components, A and B, in parts by weight:

[0038] Component A is 35 parts of polyether trihydric alcohol (Blue Star Dongda MN-500), 44.6 parts of polyethylene glycol monomethyl ether (Haian Petrochemical MPEG-500), 20 parts of plasticizer (Exec SenMobil DINP), 0.2 part of catalyst (American Gas Chemical T-12), 0.2 part of defoamer (Byk Chemical BYK-088) is a mixture made by mixing the raw materials evenly;

[0039] Component B is a polyurethane synthesized from 50 parts of isocyanate (Yantai Wanhua MDI50), 30 parts of polyethylene glycol monomethyl ether (Haian Petrochemical MPEG-500), and 20 parts of plasticizer (ExxonMobil DINP). Prepolymer;

[0040] When used, the volume ratio of A and B components is 1:1.

[0041] Specifically include the following steps:

[0042] Preparation of component A: add 35 parts of polyether triol, 44.6 parts of polyethylene glycol monomethyl ethe...

Embodiment 2

[0046] This embodiment provides a non-curing polyurethane grouting material, which consists of two components, A and B, in parts by weight:

[0047] Component A is 35 parts of polyether triol (Bluestar Dongda MN-500), 10 parts of polyether diol (Bluestar Dongda DL-1000) and 34.6 parts of polyethylene glycol monomethanol Ether (Haian Petrochemical MPEG-500), 20 parts of plasticizer (ExxonMobil DIDP), 0.2 parts of catalyst (zinc isooctanoate), 0.2 parts of defoamer (BYK-065) are mixed as raw materials The mixture made after homogenization;

[0048] Component B is a polyurethane synthesized from 55 parts of isocyanate (Yantai Wanhua MDI50), 25 parts of polyethylene glycol monomethyl ether (Haian Petrochemical MPEG-500), and 20 parts of plasticizer (ExxonMobil DIDP) Prepolymer;

[0049] When used, the volume ratio of A and B components is 1:1.

[0050] Specifically include the following steps:

[0051] Preparation of component A: Add 35 parts of polyether triol, 10 parts of po...

Embodiment 3

[0055] This embodiment provides a non-curing polyurethane grouting material, which consists of two components, A and B, in parts by weight:

[0056] Component A is 15 parts of polyether triol (Bluestar Dongda MN-700), 20 parts of polyether diol (Bluestar Dongda DL-2000D) and 44.6 parts of polyethylene glycol monomethanol Ether (Haian Petrochemical MPEG-200), 20 parts of plasticizer (ExxonMobil DINP), 0.2 parts of catalyst (bismuth isooctanoate), 0.2 parts of defoamer (BYK-088) are mixed as raw materials The mixture made after homogenization;

[0057] Component B is a polyurethane synthesized from 55 parts of isocyanate (Yantai Wanhua MDI100), 20 parts of polyethylene glycol monomethyl ether (Haian Petrochemical MPEG-750), and 25 parts of plasticizer (ExxonMobil DINP) Prepolymer;

[0058] When used, the volume ratio of A and B components is 1:1.

[0059] Specifically include the following steps:

[0060] Preparation of component A: Add 15 parts of polyether triol, 20 parts ...

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PUM

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Abstract

The invention discloses a non-curing polyurethane grouting material and a preparation method thereof. The non-curing polyurethane grouting material includes A component and B component, wherein: A component includes: 30-45 parts by weight of polyether polyol, 30-50 parts by weight of polyethylene glycol monomethyl ether, 15-50 parts by weight of plasticizer 25 parts by weight, 0-1 parts by weight of catalyst, 0-1 parts by weight of defoamer; component B includes: 50-60 parts by weight of isocyanate, 18-30 parts by weight of polyethylene glycol monomethyl ether, 20-30 parts by weight of plasticizer 30 parts by weight; the unit parts by weight of component A and component B are the same. The non-curing polyurethane grouting material of the present invention has low viscosity, never solidifies, has good adhesion to the base material, has good creep properties and self-healing ability, and is suitable for sealing various cracks and joints of building structures, especially It is suitable for anti-seepage and plugging of large deformation parts such as deformation joints. It has a strong market competitive advantage and meets the market's increasingly high requirements for products.

Description

technical field [0001] The invention belongs to the technical field of grouting materials, and more specifically relates to a non-curing polyurethane grouting material and a preparation method thereof. Background technique [0002] Non-curable rubber modified asphalt coating for waterproofing is a waterproof coating that is made of rubber and asphalt as the main components and mixed with additives to maintain a viscous paste within the service life. It has a prominent effect on the waterproof treatment of special parts such as deformation joints in construction projects, and is widely used in non-exposed building waterproof projects. [0003] The non-curing rubber asphalt waterproof material can maintain a viscous paste for a long time under the application state. The material has creep property and strong self-healing ability. The creep property will deform with the deformation of the structure and will not form secondary seepage leak. However, the viscosity of non-cured ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/76C08G18/79C09K3/12
Inventor 王新锋郑先军段文锋于成文
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD