A normal temperature synthetic environment-friendly polyurethane grouting plugging agent and preparation method thereof

A room temperature synthesis, polyurethane technology, applied in the field of waterproof materials, can solve the problems of slow reaction between secondary hydroxyl-terminated polyether and -NCO, insufficient activity of secondary hydroxyl-terminated polyether, and failure of normal industrial production, so as to reduce energy consumption , High production safety, high safety effect

Active Publication Date: 2020-02-07
苏州市姑苏新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that heating is required in the production process, and it is relatively high. Adding a large amount (generally about 20%) of volatile, flammable and explosive solvents can be described as dangerous in the production process. Then, why heat it? The activity of hydroxyl-terminated polyether is not enough, that is, the reaction between secondary hydroxyl-terminated polyether and -NCO is too slow at room temperature, and normal industrial production cannot be carried out without heating
If no solvent is added, the viscosity of the product is too high to be suitable for grouting construction

Method used

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  • A normal temperature synthetic environment-friendly polyurethane grouting plugging agent and preparation method thereof
  • A normal temperature synthetic environment-friendly polyurethane grouting plugging agent and preparation method thereof
  • A normal temperature synthetic environment-friendly polyurethane grouting plugging agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A normal temperature synthetic environment-friendly plugging material, the preparation process of which is as follows:

[0041] At room temperature (about 20°C), first add 9 parts of the first polyether, 4 parts of the second polyether, and 0.6 parts of the third polyether into the first reaction kettle, stir and mix evenly for later use, and add 65 parts of polymerized MDI-200 Add it into the second reaction kettle, start stirring (200~500r / min), then slowly add the polyether in the first reaction kettle into the second reaction kettle, and after stirring for 1 hour, add 0.6 parts of bismorpholinyl Put the diethyl ether catalyst in the second reactor, react at normal temperature for 3-4 hours, reduce the stirring speed (50-100r / min), add 10 parts of chlorinated paraffin and 10.3 parts of dichloromethane respectively in the second reactor, Stir for half an hour, add 0.5 parts of methyl silicone oil, continue stirring for half an hour, and then discharge.

Embodiment 2

[0043] A normal temperature synthetic environment-friendly plugging material, the preparation process of which is as follows:

[0044] At room temperature (about 20°C), first add 6 parts of the first polyether, 6 parts of the second polyether, and 0.4 parts of the third polyether into the first reaction kettle, stir and mix evenly for later use, and add 67 parts of polymerized MDI-200 Add it into the second reaction kettle, start stirring (200~500r / min), then slowly add the polyether in the first reaction kettle into the second reaction kettle, after stirring for 1 hour, add 0.8 parts of bismorpholino Put the diethyl ether catalyst in the second reactor, react at normal temperature for 3 to 4 hours, reduce the stirring speed (50 to 100r / min), add 8 parts of chlorinated paraffin, and 11.4 parts of dichloromethane into the second reactor respectively, Stir for half an hour, add 0.4 parts of methyl silicone oil, continue stirring for half an hour, and discharge.

Embodiment 3

[0046] A normal temperature synthetic environment-friendly plugging material, the preparation process of which is as follows:

[0047] At room temperature (about 20°C), first add 7 parts of the first polyether, 5 parts of the second polyether, and 0.6 parts of the third polyether into the first reaction kettle, stir and mix evenly for later use, and add 58 parts of polymerized MDI-200 Add it into the second reaction kettle, start stirring (200~500r / min), then slowly add the polyether in the first reaction kettle into the second reaction kettle, after stirring for 1 hour, add 0.4 parts of bismorpholinyl Put the diethyl ether catalyst in the second reactor, react at normal temperature for 3-4 hours, reduce the stirring speed (50-100r / min), add 14 parts of chlorinated paraffin, 14.5 parts of dichloromethane into the second reactor respectively, Stir for half an hour, add 0.5 parts of methyl silicone oil, continue stirring for half an hour, and then discharge.

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Abstract

The invention discloses a normal-temperature synthetic environment-friendly polyurethane grouting plugging agent and a preparation method thereof. The grouting plugging agent is characterized by being prepared from the following ingredients in percentage by weight: 55 to 75 percent of isocyanate, 5 to 9 percent of first polyether, 4 to 6 percent of second polyether, 0.3 to 0.6 percent of third polyether, 0.4 to 1.0 percent of catalysts, 8 to 15 percent of plasticizers, 10 to 20 percent of solvents and 0.3 to 0.6 percent of foam stabilizers. The grouting plugging agent is mainly prepared from high-activity reactants of polymerized MDI, primary hydroxyl polyether, secondary amino polyether and auxiliary materials of catalysts, chlorinated paraffin, dichloromethane, silicon oil and the like through polyreaction at normal temperature (about 20 DEG C); series problems of solvent volatilization, combustion and the like caused by production at high temperature are solved; meanwhile, the production process is simplified; the cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials, in particular to a normal-temperature synthetic environment-friendly polyurethane grouting plugging agent. Background technique [0002] Waterproof materials can be basically divided into four categories: waterproof coiled materials, waterproof coatings, rigid and plugging waterproof materials, and sealing materials. Waterproof coiled materials and waterproof coatings generally form a waterproof layer of a certain thickness to play a waterproof role; sealing materials are generally suitable for joints to strengthen local waterproofing; rigid and plugging waterproof materials include many, and grouting waterproof materials are one of them. Grouting waterproof material is a kind of niche material in the field of building waterproofing, but it has unique features for solving some special intractable diseases and water leakage in some buildings, and even has an immediate effect. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L91/06C08L83/04C08G18/76C08G18/48C08G18/20
CPCC08G18/2081C08G18/4804C08G18/7664C08G18/7671C08L75/08C08L2205/03C08L91/06C08L83/04
Inventor 赵长才陈晓龙
Owner 苏州市姑苏新型建材有限公司
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