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Cement-based polyurethane permeable waterproof material and preparation method thereof

A waterproof material, polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the adhesion defects of coatings and primer materials, and the compatibility between coatings and two-component polyurethane is not good, not suitable for Hybrid sports fields, etc.

Inactive Publication Date: 2021-05-18
甘肃斯波特体育设备设施有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this can play a certain waterproof effect, it also has the following disadvantages: one, the coating is thicker and wastes materials; Not very fast, so that the cement foundation will generate water vapor when it is heated and evaporated, and small capillary pores will be left on the coating; 3. The adhesion between the coating and the primer material has certain defects: the coating and the double The compatibility of the component polyurethane is not good, and the finished site is easy to delaminate
Therefore, in the past, cement foundations were not suitable for mixed sports fields.

Method used

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  • Cement-based polyurethane permeable waterproof material and preparation method thereof
  • Cement-based polyurethane permeable waterproof material and preparation method thereof
  • Cement-based polyurethane permeable waterproof material and preparation method thereof

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preparation example Construction

[0036] The present invention also provides a preparation method of the urethane permeable waterproof material described in the above technical solution, comprising the following steps:

[0037] Dehydration and degassing of polyether polyol N220 and polyether polyol N330 under reduced pressure at 110°C for 100 minutes to obtain dehydrated polyether polyol;

[0038] Add the dehydrated polyether polyol into a container with a thermometer and a stirrer, cool down to 60°C, then add isocyanate MDI-50, raise the temperature to 78°C, react at constant temperature for 2 hours, then cool down to 60°C and add dilution agent, silicone coupling agent and nano-alumina, stirred and mixed at a temperature below 60°C for 30 minutes to obtain the urethane permeable waterproof material.

[0039] In the present invention, the construction method of the cement-based polyurethane permeable waterproof material is preferably: use a roller brush to apply the above polyurethane permeable waterproof mat...

Embodiment 1

[0042] Composition of polyurethane permeable waterproofing materials based on cement base:

[0043] 3.0 parts of polyether polyol N220, 24.6 parts of polyether polyol N330, 21.4 parts of isocyanate MDI-50, 1.5 parts of nano-alumina, 25.0 parts of dimethyl carbonate and 0.1 part of organosilane coupling agent; the polyether polyol The molecular weight of N220 is 2000; the molecular weight of the polyether polyol N330 is 3000; the isocyanate is modified diphenylmethane diisocyanate, which is liquid at normal temperature;

[0044] Preparation:

[0045] Dehydration and degassing of polyether polyol N220 and polyether polyol N330 under reduced pressure at 110°C for 100 minutes to obtain dehydrated polyether polyol;

[0046] Add the dehydrated polyether polyol into a container with a thermometer and a stirrer, cool down to 60°C and then add isocyanate MDI-50, raise the temperature to 78°C, react at constant temperature for 2 hours, then cool down to 60°C and add carbonic acid Dime...

Embodiment 2

[0050] Composition of polyurethane permeable waterproofing materials based on cement base:

[0051] 17.0 parts of polyether polyol N220, 38.6 parts of polyether polyol N330, 35.4 parts of isocyanate MDI-50, 2.9 parts of nano-alumina, 30.0 parts of dimethyl carbonate and 0.3 part of organosilane coupling agent; the polyether polyol The molecular weight of N220 is 2000; the molecular weight of the polyether polyol N330 is 3000; the isocyanate is modified diphenylmethane diisocyanate, which is liquid at normal temperature;

[0052] Preparation:

[0053] Dehydration and degassing of polyether polyol N220 and polyether polyol N330 under reduced pressure at 110°C for 100 minutes to obtain dehydrated polyether polyol;

[0054] Add the dehydrated polyether polyol into a container with a thermometer and a stirrer, cool down to 60°C, then add isocyanate MDI-50, raise the temperature to 78°C, react at constant temperature for 2 hours, then cool down to 60°C and add carbonic acid Dimeth...

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Abstract

The invention relates to the technical field of waterproof materials for playgrounds, in particular to a cement-based polyurethane permeable waterproof material and a preparation method thereof. The polyurethane permeable waterproof material is prepared from the following components in parts by weight: 3.0 to 17.0 parts of polyether polyol N220, 24.6 to 38.6 parts of polyether polyol N330, 21.4 to 35.4 parts of isocyanate MDI-50, 1.5 to 2.9 parts of nano aluminum oxide, 25.0 to 30.0 parts of a diluent and 0.1 to 0.3 part of an organic silane coupling agent; the molecular weight of the polyether polyol N220 is 2000; the molecular weight of the polyether polyol N330 is 3000; the isocyanate MDI-50 is modified diphenylmethane diisocyanate, and is a liquid at a normal temperature. The polyurethane permeable waterproof material is low in cost, and the service life of a site is prolonged.

Description

[0001] This application is a divisional application of a Chinese patent application submitted to the China Patent Office on September 27, 2016, with the application number 201610854816.X, and the title of the invention is "Cement-based polyurethane permeable waterproof material and its preparation method", the entire content of which Incorporated in this application by reference. technical field [0002] The invention relates to the technical field of waterproof materials for sports fields, in particular to a cement-based polyurethane permeable waterproof material and a preparation method thereof. Background technique [0003] The cement foundation of traditional sports venues often has bubbling and delamination due to lack of waterproofing. The waterproof treatment of the cement foundation is diluted with a simple polyurethane adhesive and then rolled onto the foundation. Although this can play a certain waterproof effect, it also has the following disadvantages: one, the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K3/22C09D175/08
CPCC09D175/08C08G18/4804C08K3/22C08K2003/2227C08K2201/011
Inventor 于泳
Owner 甘肃斯波特体育设备设施有限公司
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