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Multi-component polyurethane caulking agent and preparation method thereof

A technology of polyurethane and caulking agent, applied in the field of caulking agent, can solve the problems of affecting the construction quality and final performance, the usable time is not long, and the putty layer is easy to fail. Effects of sand and gravel impact and abrasion

Active Publication Date: 2017-03-15
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the caulking agents on the market are aromatic polyurethane caulking agents, which have poor weather resistance. When the coating of FRP wind turbine blades is worn out, the putty layer (that is, the caulking layer) will become invalid due to photoaging; and The current sealants are basically two-component. When the two-component sealant is used, it can be used for only a few minutes after mixing, which seriously affects the construction quality and final performance.
For example, Chinese patent application 201110377622.2 discloses a solvent-free two-component polyurethane putty for rotors. Diisocyanate) reacts the network-like structure of polyurethane caulking material, the polyurethane caulking material has poor weather resistance, and the putty layer is easy to fail; and the material is also a two-component material, and the usable time after mixing is not long. affect its performance

Method used

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  • Multi-component polyurethane caulking agent and preparation method thereof
  • Multi-component polyurethane caulking agent and preparation method thereof
  • Multi-component polyurethane caulking agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A multi-component polyurethane sealant, including A, B and C three components, wherein, A component includes:

[0043]

[0044] Component B includes:

[0045] Bayer N3600 99.8kg,

[0046] Organic scarlet dye 0.2kg;

[0047] C components include:

[0048] Aliphatic branched hydroxyl polyester resin 9.78kg,

[0049] Accelerator Hemmings Deqian T-22 tetravalent organotin compound 0.2kg,

[0050] Organic black dye 0.02kg.

[0051] This aliphatic branched hydroxyl polyester resin is the mixture of following formula (I), formula (II) and formula (III) three structural resins:

[0052]

[0053] The aliphatic branched hydroxyl polyester resin has a non-volatile content of 99.8%, a viscosity of 1200 mPa·s at 25°C, a hydroxyl content of 9%, and a water content of 0.1%.

[0054] The preparation method of the multi-component polyurethane sealant of the present embodiment may further comprise the steps:

[0055] (1) Dry 10kg of rutile titanium dioxide and 36kg of 800-mesh...

Embodiment 2

[0061] A multi-component polyurethane sealant, including A, B and C three components, wherein, A component includes:

[0062]

[0063] Component B includes:

[0064] Bayer N3600 99.7kg,

[0065] Organic scarlet dye 0.3kg;

[0066] C components include:

[0067] Aliphatic branched hydroxyl polyester resin 9.67kg,

[0068] T-22 tetravalent organotin compound 0.3kg,

[0069] Organic black dye 0.03kg.

[0070] This aliphatic branched hydroxyl polyester resin is the mixture of following formula (I), formula (II) and formula (III) three structural resins:

[0071]

[0072] The aliphatic branched hydroxyl polyester resin has a non-volatile content of 99.8%, a viscosity of 1100 mPa·s at 25°C, a hydroxyl content of 9.5%, and a water content of 0.1%.

[0073] The preparation method of the solvent-free room temperature curing multi-component polyurethane gap filler of this embodiment is the same as that in Embodiment 1.

[0074] When in use, mix components A and B uniformly ...

Embodiment 3

[0076] A multi-component polyurethane sealant, including A, B and C three components, wherein, A component includes:

[0077]

[0078] Component B includes:

[0079] Bayer N3600 99.5kg,

[0080] Organic scarlet dye 0.5kg;

[0081] C components include:

[0082] Aliphatic branched hydroxyl polyester resin 9.45kg,

[0083] Accelerator T-22 tetravalent organotin compound 0.5kg,

[0084] Organic black dye 0.05kg.

[0085] This aliphatic branched hydroxyl polyester resin is the mixture of following formula (I), formula (II) and formula (III) three structural resins:

[0086]

[0087]

[0088] The aliphatic branched hydroxyl polyester resin has a non-volatile content of 99.8%, a viscosity of 900 mPa·s at 25°C, a hydroxyl content of 10%, and a water content of 0.1%.

[0089] The preparation method of the solvent-free room temperature curing multi-component polyurethane gap filler of this embodiment is the same as that in Embodiment 1.

[0090] When using, mix componen...

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Abstract

The invention discloses a multi-component polyurethane caulking agent which comprises a component A, a component B and a component C. The component A comprises aliphatic branched-chain hydroxyl polyester resin, pigments A, zinc stearate, organic bentonite and viscosity reducers. The component B comprises solvent-free aliphatic polyisocyanate resin and organic dye B. The component C comprises aliphatic branched-chain hydroxyl polyester resin, accelerants and organic dye C. The component A of the polyurethane caulking agent takes activated molecular sieve powder as a dewatering filler, and the common problem of blistering of a current polyurethane caulking agent product in a humid environment is successfully solved. The polyurethane caulking agent has excellent weather resistance and can be used for protecting epoxy glass reinforced plastic base materials for 10 years or more.

Description

technical field [0001] The invention belongs to the field of caulking agents, and in particular relates to a solvent-free room-temperature curing multi-component polyurethane caulking agent and a preparation method thereof. The polyurethane caulking agent is suitable for repairing vacuum-filled FRP products or bare wire joints of explosion-proof electrical appliances For packaging. Background technique [0002] FRP materials are not light-resistant, but have various advantages such as high and low temperature resistance, heat and humidity resistance, corrosion resistance and low cost, so they have been widely used in various harsh natural conditions, and their usage has been increasing year by year. In the weather protection coating of FRP products, a large amount of leveling, repairing and caulking agents must be used. The bare wire joints of explosion-proof electrical appliances are packaged and filled with electrically insulating polymer materials, which can prevent the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08K13/06C08K3/22C08K3/34C08K5/098C08K9/04C08K5/01C08K7/26C08K5/57C08G18/42C09K3/10
CPCC08G18/42C08K3/22C08K3/34C08K3/346C08K5/01C08K5/098C08K5/57C08K7/26C08K9/04C08K13/06C08K2003/2241C08L75/06C09K3/10
Inventor 李儒剑孟兆荣邢国华曾智曾凡辉陈立斌周伟
Owner ZHUZHOU TIMES NEW MATERIALS TECH