Ultra-low temperature resistant and environmentally friendly two-component polyurethane adhesive and its preparation and application

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: 2021-10-29
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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  • Ultra-low temperature resistant and environmentally friendly two-component polyurethane adhesive and its preparation and application
  • Ultra-low temperature resistant and environmentally friendly two-component polyurethane adhesive and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The A component includes a component of the weight percentage:

[0057] 40% of isocyanate (Wanhua MDI-100)

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

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

[0060] The above A component was mixed and uniformly increased to 75 to 80 ° C for 3 h, evacuated and evacuated, and the cooling was removed, that is, the A-1 component was obtained.

[0061] The B component includes a component of the weight percentage:

[0062] Polycarbonate polyol (Damazu fine chemical PPC-2202P) 5%

[0063] Polytegahydrofuran polyol modification (INVISTA 3MCPG) 53.5%

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

[0065] Crosslinking agent (US Eastman TMPD) 3%

[0066] Catalyst (US leading chemistry Bicat 8108) 0.5%

[0067] Diven solidulator (British Incorez EH) 1%

[0068] Adhesion promoter (Hanjiang fine chemical JH-0187) 2%

[0069] Filler (Jiangxi Huaming nano calcium carbonate SPTL-2) 20%

[0070] Threulation agent (WACHEAGEA H20) 10%

...

Embodiment 2

[0074] The A component includes a component of the weight percentage:

[0075] 40% of isocyanate (Wanhua MDI-100)

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

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

[0078] The above A component was mixed and uniformly increased to 75 to 80 ° C for 3 h, vacuum disproportionate, cooling the discharge, that is, the A-2 component was obtained.

[0079] The B component includes a component of the weight percentage:

[0080] Polycarbonate polyol (Damazu fine chemical PPC-2202P) 25%

[0081] Polytegahydrofuran polyol modification (INVISTA 3MCPG) 16.4%

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

[0083] Crosslinking agent (US Eastman TMPD) 5%

[0084] Catalyst (US leading chemistry Bicat 8108) 1%

[0085] Diven Correctant (British Incorez EH) 0.6%

[0086] Adhesion promoter (Hanjiang fine chemical JH-0187) 2%

[0087] Filler (Jiangxi Huaming Nano Calcium Carbonate SPTL-2) 15%

[0088] Threulation agent (WACHEAGEA H20) 10%

[0089] ...

Embodiment 3

[0092] The A component includes a component of the weight percentage:

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

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

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

[0096] The above A component was mixed and homogeneously tapered to 75 to 80 ° C for 3 h, vacuum dispropted, and the cooling was removed, the A-3 component was obtained.

[0097] The B component includes a component of the weight percentage:

[0098] Polycarbonate polyol (Damazi fine chemical PPC-2202P) 40%

[0099] Polytegahydrofuran polyol modification (INVISTA 3MCPG) 7.4%

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

[0101] Crosslinking agent (US Eastman TMPD) 3%

[0102] Catalyst (US leading chemistry Bicat 8108) 1%

[0103] Diven Correctant (British Incorez EH) 0.6%

[0104] Attachment Accession (Hanjiang Fine Chemical JH-0187) 3%

[0105] Filler (Jiangxi Huaming nano calcium carbonate SPTL-2) 10%

[0106] Threulation agent (WACHOCIALATIVE H20) 5%

[0107] The ...

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Abstract

The invention relates to an ultra-low temperature resistant and environmentally friendly two-component polyurethane adhesive and its preparation and application. The ultra-low temperature resistant and environmentally friendly two-component polyurethane adhesive is prepared by mixing components A and B. The group A Divided into isocyanate-terminated polyurethane prepolymer, its isocyanate group content is 40-70%; the B component includes polypropylene carbonate polyol, polytetrahydrofuran polyol modified product, vegetable oil polyol, crosslinking agent , catalyst, latent curing agent, adhesion promoter, filler, thixotropic agent. The ultra-low temperature resistant and environment-friendly two-component polyurethane adhesive of the present invention is applied to the bonding of polyurethane foam and glass fiber reinforced plastics of LNG marine insulation boxes, has fast curing speed, high peel strength, excellent ultra-low temperature resistance and hydrolysis resistance, and is more environmentally friendly.

Description

Technical field [0001] The present invention relates to a highly low temperature polyurethane adhesive and its preparation and application thereof. Background technique [0002] LNG (LNG) is the fastest quality cleaning fuel currently global growth. As an ultra-low temperature (-163 ° C) liquid, the LNG is mainly transported by a large vessel (LNG boat). The LNG ship's liquid cargo ship's adelectronic warehouse adopts a double-layer structure, and a polyurethane foam material is used between the warehouse, and the outer layer is used in glass steel, and there is a need for ultra-low temperature adhesive. The adhesive must maintain high shear strength and toughness in the case of ultra-low temperature (-163 ° C). [0003] CN 101531879B discloses a method for preparing an adhesive between LNG veneer polyurethane foam and a glass steel, which is modified by silicone polyurethane modified prepolymer, epoxy resin, solvent, chain extender, SiO 2, Caco 3, CaCL2, etc. CN 101531878B discl...

Claims

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Application Information

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Patent Type & Authority Patents(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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