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Ultralow-temperature-resistant environment-friendly two-component polyurethane adhesive and preparation and application thereof

A two-component polyurethane, environmentally friendly technology, used in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problems of slow curing speed, non-environmentally friendly solvents, and low peel strength , to achieve the effect of fast curing speed, improved peel strength, good hydrolysis resistance and low temperature peel strength

Active Publication Date: 2020-04-28
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above patents is the use of a one-component adhesive system, which has disadvantages such as slow curing speed, low final peel strength, and non-environmentally friendly solvents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A component comprises the component of following percentage by weight:

[0057] Isocyanate (Wanhua MDI-100) 40%

[0058] Polyether polyol (Dow Chemical 1000LM) 10%

[0059] Castor oil polyol (Japan Ito Oil H-30) 50%

[0060] Mix the above components A evenly, then raise the temperature to 75~80°C and react for 3 hours, vacuumize to remove bubbles, cool down and discharge, and then the A-1 component is obtained.

[0061] B component comprises the component of following percentage by weight:

[0062] Polypropylene carbonate polyol (Dazhi Fine Chemical PPC-2202P) 5%

[0063] Modified polytetrahydrofuran polyol (Invista 3MCPG) 53.5%

[0064] Castor oil polyol (Japan Ito Oil H-30) 5%

[0065] Cross-linking agent (USA Eastman TMPD) 3%

[0066] Catalyst (U.S. leading chemical BiCAT 8108) 0.5%

[0067] Latent curing agent (Incorez EH, UK) 1%

[0068] Adhesion promoter (Hanjiang Fine Chemical JH-0187) 2%

[0069] Filler (Jiangxi Huaming Nano Calcium Carbonate SPTL-2) 20...

Embodiment 2

[0074] A component comprises the component of following percentage by weight:

[0075] Isocyanate (Wanhua MDI-100) 40%

[0076] Polyether polyol (Dow Chemical 1000LM) 40%

[0077] Castor oil polyol (Japan Ito Oil H-30) 20%

[0078] Mix the above-mentioned component A evenly, then raise the temperature to 75~80°C and react for 3 hours, vacuumize to remove foam, cool down and discharge the material, and then the A-2 component is obtained.

[0079] B component comprises the component of following percentage by weight:

[0080] Polypropylene carbonate polyol (Dazhi Fine Chemical PPC-2202P) 25%

[0081] Modified polytetrahydrofuran polyol (Invista 3MCPG) 16.4%

[0082] Castor oil polyol (Japan Ito Oil H-30) 25%

[0083] Cross-linking agent (USA Eastman TMPD) 5%

[0084] Catalyst (U.S. leading chemical BiCAT 8108) 1%

[0085] Latent curing agent (Incorez EH, UK) 0.6%

[0086] Adhesion promoter (Hanjiang Fine Chemical JH-0187) 2%

[0087] Filler (Jiangxi Huaming Nano Calcium...

Embodiment 3

[0092] A component comprises the component of following percentage by weight:

[0093] Isocyanate (Wanhua MDI-100) 55%

[0094] Polyether polyol (Dow Chemical 1000LM) 10%

[0095] Castor oil polyol (Japan Ito Oil H-30) 35%

[0096] Mix the above-mentioned components A evenly, then raise the temperature to 75~80°C and react for 3 hours, vacuumize to remove bubbles, cool down and discharge the material, and then the A-3 component is obtained.

[0097] B component comprises the component of following percentage by weight:

[0098] Polypropylene carbonate polyol (Dazhi Fine Chemical PPC-2202P) 40%

[0099] Modified polytetrahydrofuran polyol (Invista 3MCPG) 7.4%

[0100] Castor oil polyol (Japan Ito Oil H-30) 30%

[0101] Cross-linking agent (USA Eastman TMPD) 3%

[0102] Catalyst (U.S. leading chemical BiCAT 8108) 1%

[0103] Latent curing agent (Incorez EH, UK) 0.6%

[0104] Adhesion promoter (Hanjiang Fine Chemical JH-0187) 3%

[0105] Filler (Jiangxi Huaming Nano Calc...

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PUM

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Abstract

The invention relates to an ultralow-temperature-resistant environment-friendly two-component polyurethane adhesive and preparation and application thereof. The ultralow-temperature-resistant environment-friendly two-component polyurethane adhesive is prepared by mixing and blending a component A and a component B. The component A is an isocyanate-terminated polyurethane prepolymer, and the isocyanate group content of the component A is 40-70%; and the component B comprises polypropylene carbonate polyol, a polytetrahydrofuran polyol modifier, vegetable oil polyol, a cross-linking agent, a catalyst, a latent curing agent, an adhesion promoter, a filler and a thixotropic agent. The ultralow-temperature-resistant environment-friendly two-component polyurethane adhesive is applied to adhesionof polyurethane foam and glass fiber reinforced plastic of a heat insulation box body for an LNG ship and is high in curing speed, high in peel strength, excellent in ultralow temperature resistanceand hydrolysis resistance and more environment-friendly.

Description

technical field [0001] The invention relates to an ultra-low temperature resistant polyurethane adhesive and its preparation and application. Background technique [0002] Liquefied natural gas (LNG) is currently the fastest growing high-quality clean fuel in the world. As an ultra-low temperature (-163°C) liquid, LNG is mainly transported by large ships (LNG ships). The insulated cargo tank of the LNG carrier adopts a double-layer structure. The polyurethane foam material is used between the cargo tanks, and the outer layer is made of glass fiber reinforced plastics. An ultra-low temperature resistant adhesive is required between the two. The adhesive must maintain high shear strength and toughness at ultra-low temperatures (-163°C). [0003] CN101531879B discloses a kind of preparation method that is used for the adhesive between polyurethane foam of LNG ship and glass fiber reinforced plastics, and this adhesive is made of organosilicon polyurethane modified prepolymer,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06C08G18/12C08G18/66C08G18/48C08G18/67C08G18/44C08G18/32C08G18/24C08G18/22
CPCC08G18/12C08G18/227C08G18/242C08G18/4825C08G18/4829C08G18/6607C08G18/6611C08K2003/265C08K2201/011C09J11/04C09J11/06C09J175/14C08G18/4854C08G18/36C08G18/44C08G18/3206C08K13/04C08K7/26C08K3/26C08K3/042C08K5/353C08K5/29
Inventor 戴胜朱彦蔡华唐劲松
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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