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A two-component water blocking reinforcement grouting material and its preparation method

A grouting material and two-component technology are applied in the field of two-component water blocking reinforcement grouting materials and their preparation, which can solve the problems of poor adhesion of polyurethane grouting materials on wet foundations, the reaction speed is greatly affected by temperature, and the performance cannot be taken into account. , to improve the effect of plugging and reinforcement, good toughness and easy operation.

Active Publication Date: 2022-01-14
苏州东方雨虹建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types of water blocking reinforcement materials, such as polyurethane grouting materials, water glass modified polyurethane grouting materials, epoxy modified polyurethane grouting materials, etc., these materials have the problem that the performance cannot be taken into account, and the reaction speed of polyurethane grouting materials is affected by temperature Larger, poor adhesion to wet foundation, poor toughness of water glass modified polyurethane grouting material, poor adhesion to wet foundation of epoxy modified polyurethane grouting material, etc.

Method used

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  • A two-component water blocking reinforcement grouting material and its preparation method

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preparation example Construction

[0033] Another aspect of the present invention provides the preparation method of the above-mentioned two-component water blocking reinforcement grouting material, the preparation method comprising:

[0034] Preparation of component A: dehydrate polyether polyol, polyester polyol and optional plasticizer, cool down, and then mix with latent curing agent, foam stabilizer and catalyst;

[0035] Preparation of component B: prepare measured polyisocyanate.

[0036] According to the present invention, preferably, the dehydration is: dehydration at a temperature of 110-120°C and a vacuum of -0.09 to -0.1MPa for 2-3 hours until the moisture content is less than 0.05wt%; Below 40°C.

Embodiment 1

[0044] This embodiment provides a two-component water blocking reinforcement grouting material, including: A component and B component,

[0045] The A component includes: 45 parts by weight of polyether polyol MN-500 (hydroxyl value: 340; polyether trihydric alcohol), 35 parts by weight of polyester polyol HF-8725 (hydroxyl value: 240), 1.5 parts by weight Parts of amine catalyst DMDEE (dimorpholino diethyl ether), 0.8 parts by weight of metal catalyst T12, 2 parts by weight of latent curing agent ALT-101 (oxazolidine latent curing agent), 1.5 parts by weight of foam stabilizer AK- 8803, 14.2 parts by weight of plasticizer diisononyl phthalate;

[0046] The B component includes: 65 parts by weight of polyphenyl polymethylene polyisocyanate.

[0047] The present embodiment also provides the preparation method of above-mentioned grouting material, comprises the following steps:

[0048] Preparation of component A: Dehydrate polyether polyol, polyester polyol and plasticizer at a...

Embodiment 2

[0052] This embodiment provides a two-component water blocking reinforcement grouting material, including: A component and B component,

[0053] The A component includes: 40 parts by weight of polyether polyol DL-1000 (hydroxyl value: 56; polyether diol), 40 parts by weight of polyester polyol FH-8040 (hydroxyl value: 400), 1 part by weight Amine catalyst 12-DMA (dodecyl dimethyl tertiary amine), 1 weight part metal catalyst bismuth isooctanoate, 2 weight parts foam stabilizer AK-8876, 3 weight parts latent curing agent ALT-401 (oxazolidine class latent curing agent) and the plasticizer phenyl sulfonate of 13 parts by weight;

[0054] The B component includes: 30 parts by weight of polyphenyl polymethylene polyisocyanate and 20 parts by weight of MDI-50.

[0055] The present embodiment also provides the preparation method of above-mentioned grouting material, comprises the following steps:

[0056] Preparation of component A: dehydrate polyether polyol, polyester polyol and ...

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Abstract

The invention discloses a two-component water blocking reinforcement grouting material and a preparation method thereof, comprising: component A and component B; in parts by weight, component A comprises: 40-60 parts of polyether polyol, poly 20-40 parts of ester polyol, 0-20 parts of plasticizer, 0.5-3 parts of catalyst, 0.5-3 parts of latent curing agent and 0.5-3 parts of foam stabilizer; B component includes: polyisocyanate; said A group The weight ratio to the B component is 2‑1:1. The grouting material of the present invention is a two-component polyurethane grouting material. Through the improvement of raw materials and composition, the material viscosity is low, the cured product has high strength, good toughness, convenient operation, and quickly reacts to form rigid foam when it encounters water. Forms a rigid resin in water for reinforcement. The cured product is firmly bonded to the base layer without shrinkage, which improves the plugging and reinforcement effect.

Description

technical field [0001] The invention belongs to the technical field of waterproof plugging, and more specifically relates to a two-component water plugging reinforcement grouting material and a preparation method thereof. Background technique [0002] Chemical grouting is to prepare a certain chemical material (inorganic or organic material) into a real solution, and pour it into the formation or gap with a pressure-feeding equipment such as a chemical grouting pump to make it penetrate, diffuse, gel or solidify, so as to increase the concentration of the formation. Strength, reduce the permeability of the ground, prevent the deformation of the ground and repair the cracks of concrete buildings as a reinforcement foundation, waterproof plugging and concrete defect reinforcement technology. That is, chemical grouting is a combination of chemistry and engineering, using chemical science, chemical slurry materials and engineering technology to deal with foundation and concrete ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/42C08K5/12C08J9/00C08L75/08
CPCC08G18/4018C08G18/4829C08G18/4825C08G18/42C08K5/12C08J9/00C08J2375/08
Inventor 郑先军牟辰中段存业许宁丁红梅
Owner 苏州东方雨虹建筑材料有限公司
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