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A kind of micro-expansion self-healing polyurethane waterproof mortar and preparation method thereof

A polyurethane waterproof and self-healing technology, applied in the field of building materials, can solve problems such as poor compatibility, and achieve the effects of good compatibility, convenient construction and good micro-expansion performance.

Active Publication Date: 2016-08-24
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oily castor oil used in this water-based polyurethane mortar composition still has disadvantages such as poor compatibility with aggregate materials.
[0008] Organic matter modified waterproof mortar improves the toughness of the product to a certain extent, greatly improves its waterproof, impermeability, and anti-corrosion properties, and effectively inhibits drying shrinkage and cracking problems, but it is still a rigid waterproof coating, and the cracks in the base layer are deformed When it is too large, there is still a certain risk of cracking

Method used

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  • A kind of micro-expansion self-healing polyurethane waterproof mortar and preparation method thereof
  • A kind of micro-expansion self-healing polyurethane waterproof mortar and preparation method thereof
  • A kind of micro-expansion self-healing polyurethane waterproof mortar and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 4 parts of polyether polyol resin N220 (functionality 2, molecular weight 2000, Tianjin Petrochemical), 50 parts of castor oil polyol resin H-306 (functionality 2, molecular weight 660, Ito Oil Co., Ltd.), 0.05 part of emulsifier OP-10, stirring and mixing in a 60°C reactor, 1200r / min high-speed shear dispersion, adding 15 parts of water successively, and emulsifying for 30min to obtain the complex polyol emulsion system A1.

Embodiment 2

[0037]4 parts of polyether polyol resin N220 (functionality 2, molecular weight 2000, Tianjin Petrochemical), 5 parts of N330 (functionality 3, molecular weight 3000, Tianjin Petrochemical), castor oil polyol resin HF-1300 (functionality 2, molecular weight 1068~1496 (Ito Oil Co., Ltd.) 45 parts, 0.05 parts of emulsifier OP-10, 0.03 parts of emulsifier AEO, stirring and mixing in a 60°C reactor, 2000r / min high-speed shear dispersion, adding 25 parts of water successively, emulsifying for 30min , to obtain complex polyol emulsion system A2.

Embodiment 3

[0039] 20 parts of polyether polyol resin N220 (functionality 2, molecular weight 2000, Tianjin Petrochemical), 3 parts of polyester polyol NIPPOLLAN 121E (Xiamen Aikema Chemical Raw Materials Co., Ltd.), polyether polyol N403 (functionality 4, Molecular weight 300, Jiangsu Zhongshan Chemical Industry), 25 parts of castor oil polyol resin Polycin GR-50 (functionality 2.2, molecular weight 2610, U.S. Vertellus company), 0.12 part of emulsifier alkylphenol polyoxyethylene polyoxypropylene ether (brand sea petrochemical), 0.03 parts of emulsifier SDS, stirring and mixing in a 60°C reactor, dispersing at a high speed of 1000r / min, adding 30 parts of water successively, and emulsifying for 30 minutes to obtain a complex polyol emulsion system A3.

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Abstract

The invention provides a micro-expansive self-repaired polyurethane waterproof mortar which comprises the following components in parts by weight: 60-90 parts of a water hardened mortar aggregate system containing organic silicon active matters, 5-25 parts of a compound polyol emulsion system and 5-25 parts of an isocyanate curing agent, wherein the water hardened mortar aggregate system comprises the organic silicon active matters and cement mortar in a mass ratio of 1-7 to 93-99; the compound polyol emulsion system comprises polyol resin, castor oil polyol resin, an emulsifier and water in a mass ratio of 4-30 to 8-50 to 0.05-0.3 to 10-40. The invention further provides a preparation method of the micro-expansive self-repaired polyurethane waterproof mortar. The waterproof mortar is simple in preparation process and convenient to construct and the cured and formed mortar is good in micro-expansive performance and excellent in self-repairing performance. Moreover, the mortar further has self compacting capability, shock resistance, wear resistance, and hydrophobic property and waterproof performance.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a micro-expansion self-repairing polyurethane waterproof mortar and a preparation method thereof. Background technique [0002] Ordinary mortar composed of cement, sand, mineral powder and other materials has large drying shrinkage and deformation, poor impermeability, crack resistance, and corrosion resistance, which are greatly restricted in practical applications; Chinese patent CN 103553483 A cement-based permeable crystalline waterproofing Coating and its preparation method, CN 101891432 B A kind of osmotic crystalline waterproof coating respectively discloses a substance added with a precipitating agent and a complexing agent, which penetrates and crystallizes inside the concrete to play the role of compact waterproof and anti-seepage. In terms of depth, it serves the purpose of improving the impermeability, waterproof and anti-corrosion performance of the product. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B24/02C04B24/42
Inventor 孙德文冉千平杨冲万赟刘玉亭李波尹浩
Owner JIANGSU SOBUTE NEW MATERIALS
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