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High-modulus rapid repairing and reinforcing material for cave depots

A technology of reinforcement material and high modulus, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of complex performance requirements of coatings, and achieve the effect of good reinforcement, not easy to vibrate and fall off, and good bonding force

Pending Publication Date: 2021-11-02
青岛费米新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the defects existing in the prior art and combined with the current research frontier, the present invention provides a high-modulus rapid repair and reinforcement material for caverns, which solves the problem of more complex performance requirements of coatings on existing wet base surfaces, and is used in caverns. High Modulus, Fast Repair of Library Wall Substrates

Method used

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  • High-modulus rapid repairing and reinforcing material for cave depots
  • High-modulus rapid repairing and reinforcing material for cave depots
  • High-modulus rapid repairing and reinforcing material for cave depots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of component A:

[0053] Take 10 parts of refined castor oil by weight, put it into the reaction kettle, dehydrate under reduced pressure at 100-120°C for 1 hour, then cool down to 60°C, then slowly add 90 parts of PAPI, and slowly heat up to 70°C after half an hour of reaction and keep the temperature for 2 hour, when the free NCO content of the sampling test reaches 26.7%, the cooling filter discharges the material.

[0054] Preparation of component B:

[0055] Bake and dehydrate the glass fiber powder with an aspect ratio of 10:1 at 110-120°C for 2 hours, then spray KH560 on the glass fiber powder, stir and disperse at high speed at 3000r / min, stir for 20-30 minutes, then 120 Bake at ℃ for 2 hours and set aside.

[0056] 5% chain extender E300 by weight, 25% 4-functional hydrophobic polyol Vertellus M365, 14% Desmophen1150, 10% latent curing JH338, 0.2% hydrolysis accelerator salicylic acid, 0.5% catalyst CUCAT - HA01, 45.3% KH560 modified glass fiber ...

Embodiment 2

[0064] A component directly chooses PAPI, NCO% ≈ 31.

[0065] Preparation of component B:

[0066] Bake and dehydrate wollastonite powder with an aspect ratio of 15:1 at 110-120°C for 2 hours, then spray KH560 on the wollastonite powder, stir and disperse at high speed at 3000r / min, stir for 20-30 minutes, then 120 Bake at ℃ for 2 hours and set aside.

[0067] 8% chain extender E200 by weight, 8% 4-functionality hydrophobic polyol Vertellus M365, 21% 750, 4% TAE285, 10% latent curing agent JH306, 0.2% hydrolysis accelerator salicylic acid, 0.5% catalyst CUCAT-HA01, 48.3% KH560 modified wollastonite powder, put into the mixing tank, high speed Stir to disperse evenly at a speed of 1500r / min or more, stir for 1 hour, and filter out the material with an 80-mesh filter.

[0068] The raw material parameters are shown in Table 3, and the performance parameters are shown in Table 4.

[0069] Table 3. Embodiment 2 raw material parameters

[0070]

[0071] Table 4. Embodiment ...

Embodiment 3

[0075] Preparation of component A:

[0076] Take 3 parts by weight of polyether polyol TDIOL2000 with a molecular weight of 2000, put it into the reaction kettle, dehydrate under reduced pressure at 100-120°C for 1 hour, then cool down to 60°C, then slowly add 12 parts of LMDI, and slowly heat up after half an hour of reaction Keep warm at 70°C for 2 hours, then add 85 parts of PAPI, take a sample and test when the free NCO content reaches 29.8%, cool down and filter to discharge.

[0077] Preparation of component B:

[0078] Bake and dehydrate the glass fiber powder with an aspect ratio of 10:1 at 110-120°C for 2 hours, then spray SI69 on the glass fiber powder, stir and disperse at high speed at 3000r / min, stir for 20-30 minutes, then 120 Bake at ℃ for 2 hours and set aside.

[0079] 5% chain extender E100 by weight, 10.5% 4-functionality hydrophobic polyol Vertellus M365, 14.2% TAE305, 17.3% Desmophen1150, 12% latent curing agent JH338, 0.2% salicylic acid hydrolysis acce...

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Abstract

The invention belongs to the technical field of solvent-free polyurethane spraying materials, and particularly relates to a high-modulus rapid repairing and reinforcing material for cave depots. The material is prepared by mixing a component A and a component B according to a volume ratio of 1: 1.5, wherein the component A is prepared from the following raw materials in percentage by mass: 90-100% of isocyanate, 0-10% of one or two of polyether polyol and castor oil; the content of NCO in the component A is 26.7 to 32 percent; the molecular weight of the polyether polyol is 1000-2000, and the functionality of the polyether polyol is 2; the component B is prepared from the following raw materials in percentage by mass: 14.5 to 44.5 percent of polyhydric alcohol with the functionality of 3 or polyhydric alcohol with the functionality of 4 or a mixture of the polyhydric alcohol with the functionality of 3 and the polyhydric alcohol with the functionality of 4, 5 to 10 percent of a chain extender, 35 to 50 percent of one or two of glass fiber powder or wollastonite powder, 0.3 to 0.6 percent of a catalyst CUCAT-HA01, 0.3 to 0.5 percent of a silane coupling agent, 10 to 20 percent of a latent curing agent and 0.2 to 0.4 percent of a hydrolysis accelerant. The material disclosed by the invention is used for quickly repairing a wet base material, is high in curing speed and can be put into application after being cured.

Description

technical field [0001] The invention belongs to the technical field of solvent-free polyurethane spraying materials, and in particular relates to a high-modulus rapid repair and reinforcement material for caverns. Background technique [0002] Because the military caverns are excavated in the mountains, and many caverns are closely connected to the ocean at the same time, the caves are humid all the year round, and the site environment has high requirements on materials, which must not only have good corrosion resistance, but also prevent water seepage. [0003] The equipment and facilities in the cavern are very expensive, so the base material of the cavern must not fall off or fall off, so as not to damage the equipment, especially in the case of earthquakes and impacts, the base material must also be firm to protect personal safety and the safety of equipment and facilities. [0004] Moreover, the site environment is humid, and the base material is almost impossible to dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/62C09D7/63
CPCC09D175/14C09D7/62C09D7/63C09D7/70C08K9/06C08K7/14C08K5/13C08K7/10
Inventor 高树峰
Owner 青岛费米新材料科技有限公司
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