Polyurethane water blocking agent and its preparation method and use method

A polyurethane and water blocking agent technology, applied in the field of polyurethane, can solve the problems of long curing time, unadjustable speed, poor waterproof performance, etc., and achieve the effects of fast reaction speed, long storage period, excellent fluidity and cohesiveness

Active Publication Date: 2017-10-13
SHANGHAI DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to overcome the defects of poor waterproof performance, long curing time and non-adjustable speed of existing polyurethane materials, and provide a polyurethane water blocking agent and its preparation method and use method

Method used

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  • Polyurethane water blocking agent and its preparation method and use method
  • Polyurethane water blocking agent and its preparation method and use method
  • Polyurethane water blocking agent and its preparation method and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw materials of component A are:

[0040]

[0041] The raw materials of component B are:

[0042] Polyoxypropylene Triol 330N: 20

[0043] Diethylene glycol diethyl ether: 10

[0044] Triethylenediamine: 20

[0045] Component A is prepared by the following steps: Put the polyoxypropylene triol MN-1000 based on the formula into the reactor at room temperature, raise it to 100 to 120°C, stir, vacuumize and dehydrate for 2-3 hours, and cool down Add isocyanate PM-200 to 10-40°C, react at 80-85°C for 2-3 hours, cool down to 30-40°C, add dibutyl phthalate, acetone, water-soluble silicone oil and phosphoric acid, mix well, and pack into barrels .

[0046] Component B is prepared through the following steps: Put the measured 330N, diethylene glycol diethyl ether, and triethylenediamine into the reaction kettle, stir at room temperature for 2-3 hours, and then fill the barrel.

[0047] The properties of the polyurethane water blocking agent product in this example ...

Embodiment 2

[0051] The raw materials of component A are:

[0052]

[0053] The raw materials of component B are:

[0054] Polyoxypropylene Triol 330N: 30

[0055] Ethylene glycol diethyl ether: 20

[0056] Triethylenediamine: 25

[0057] Component A is prepared by the following steps: Put the polyoxypropylene triol MN-3050 and polyoxypropylene triol MN-1000 based on the formula into the reactor at room temperature, raise the temperature to 100 to 120 °C, stir, pump Vacuum dehydration and degassing for 2-3 hours, cool down to 10-40°C, add isocyanate PM-200, react at 80-85°C for 2-3 hours, cool down to 30-40°C, add dioctyl phthalate, acetone, Stir the water-soluble silicone oil and phosphoric acid evenly, and pack into barrels.

[0058] Component B is prepared by the following steps: Put the measured polyoxypropylene triol 330N, ethylene glycol diethyl ether, and triethylenediamine into the reaction kettle, stir at room temperature for 2-3 hours, and then fill the barrel .

[0059] T...

Embodiment 3

[0063] The raw materials of component A are:

[0064]

[0065] The raw materials of component B are:

[0066]

[0067] Preparation of component A: Put the 330N based on the formula into the reaction kettle at room temperature, raise it to 100 to 120°C, stir, vacuumize and dehydrate and degas for 2-3 hours, cool down to 10-40°C, add isocyanate PM-200, at 80 React at -85°C for 2-3 hours, cool down to 30-40°C, add dioctyl phthalate, dibutyl phthalate, acetone, water-soluble silicone oil and phosphoric acid, stir evenly, and pack into barrels.

[0068] Preparation of component B: Put the measured polyoxypropylene triol MN-3050, diethylene glycol diethyl ether, ethylene glycol diethyl ether, and triethylenediamine into the reaction kettle, and stir at room temperature for 2-3 hours, that is Can be barreled.

[0069] The properties of the polyurethane water blocking agent product in this example are as follows: the viscosity (25° C.) is: 230 mPa·s for component A, and 72 mPa...

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Abstract

The invention discloses a polyurethane water blocking agent, a preparation method and a use method thereof. The polyurethane water blocking agent includes A component and B component; the A component includes the following raw material components in parts by weight: 15-45 parts of polyether polyol, 200 parts of polymethylene polyphenyl isocyanate , 50 to 80 parts of plasticizers, 15 to 30 parts of organic solvents and 5 to 10 parts of foam stabilizers, said A component also includes 10 ppm of storage stabilizer; said B component includes the following parts by weight Raw material components: 10-30 parts of polyether polyol, 10-20 parts of organic solvent and 20-25 parts of catalyst; the mass ratio of the A component and the B component is (5:1)~(20: 1). The polyurethane water shutoff agent of the present invention has excellent characteristics such as fast reaction speed, adjustable speed, long storage period, etc., and can well solve the situation in engineering that needs to quickly stop water.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a polyurethane water blocking agent and a preparation method and application method thereof. Background technique [0002] The application range of polyurethane materials is very wide, and the application in the field of reinforcement and water blocking is becoming more and more prominent, and the effect of water sealing and waterproofing is good. Most of the existing polyurethane water blocking agents are single-component, and the speed cannot be adjusted. Some polyurethane two-component materials have poor reinforcement effect and poor water blocking effect. The industry standard JC / T2041-2010 for polyurethane grouting materials stipulates that the curing time of the water blocking agent should not exceed 800 seconds. The curing time of the existing single-component water blocking agent generally cannot achieve a fast curing speed. To achieve a very short curing time, more catalys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/48C09K8/42
Inventor 马立青董建国王振波郭东雷杜辉
Owner SHANGHAI DONGDA CHEM
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