Moisture-curable polyurethane hot melt adhesive, preparation method and application thereof, and steel member

A polyurethane hot-melt adhesive and hot-melt adhesive technology, applied in the field of polyurethane hot-melt adhesive, can solve the problems of steel structure building leakage, affect the service life of the building, and cannot solve the problems of steel structure building leakage, etc., and achieve high and low temperature resistance, The effect of long service life and high bond strength

Inactive Publication Date: 2020-06-19
常州威斯敦粘合材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as time goes by, steel structure buildings are prone to leakage, which seriously affects the service life of the building
The existing technology usually uses sealant or SBS glue to process steel structure materials, but still cannot solve the leakage problem of steel structure buildings

Method used

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  • Moisture-curable polyurethane hot melt adhesive, preparation method and application thereof, and steel member
  • Moisture-curable polyurethane hot melt adhesive, preparation method and application thereof, and steel member
  • Moisture-curable polyurethane hot melt adhesive, preparation method and application thereof, and steel member

Examples

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preparation example Construction

[0034] further, see figure 1, the invention provides a method for preparing polyurethane hot melt adhesive, comprising: mixing and dispersing nano silicon dioxide and epoxy resin; heating; adding polyether polyol, crystalline polyester polyol, tackifying resin, acrylic acid Resin, coupling agent, leveling agent and antioxidant, and vacuum dehydration; cooling; adding isocyanate under the protection of nitrogen to react; adding catalyst to continue the reaction; and discharge, nitrogen filling and sealing to obtain polyurethane hot melt adhesive .

[0035] Specifically, the epoxy resin is first placed under a high-speed disperser, and nano-silica is added to disperse at high speed to prepare component A. Finally, the temperature of the reactor is raised to 130°C to form a mixed dispersion; add component A, polyether polyol, crystalline polyester polyol, tackifier resin, acrylic resin, coupling agent, leveling agent and antioxidant, After vacuum dehydration for 3 hours, cool d...

Embodiment 1

[0041] First place 40 parts of EP-16 (epoxy resin) under a high-speed disperser, add 5 parts of R 974 (nano silicon dioxide) and disperse at high speed to prepare component A. Finally, the temperature of the reactor was raised to 130°C, and Component A, 40 parts of PPG2000 (polyether polyol), 20 parts of Dynacoll 7360 (crystalline polyester polyol), 25 parts of Elvacite2013 (acrylic resin), and 25 parts of Vestoplast508 (tackifying resin) were added. ) 5 parts, KH 550 (coupling agent) 1 part, antioxidant 1010 0.1 part and leveling agent 0.1 part, after vacuum dehydration for 3 hours, cool down to 90 ℃ ~ 110 ℃, add MDI (isocyanate) 13 under nitrogen protection Parts, react at 110°C for 1 to 2 hours, until the NCO% content of the reaction product reaches the theoretical value (about 1.5%), add 0.1 part of DMDEE (amine catalyst), and stop the reaction after 10 to 20 minutes of reaction. The material is discharged into an aluminum foil bag, filled with nitrogen and sealed to obtai...

Embodiment 2

[0043] The difference between embodiment 2 and embodiment 1 is to adjust the consumption of each raw material, namely:

[0044] 40 parts of EP-16 (epoxy resin);

[0045] 5 parts of R 974 (nanometer silicon dioxide);

[0046] 60 parts of PPG 2000 (polyether polyol);

[0047] Dynacoll 7360 (crystalline polyester polyol) 20 parts;

[0048] Elvacite 2013 (acrylic resin) 25 parts;

[0049] 5 parts of Vestoplast 508 (tackifying resin);

[0050] 1 part of KH 550 (coupling agent);

[0051] Antioxidant 1010 0.1 part;

[0052] Leveling agent 0.1 part;

[0053] 13 parts of MDI (isocyanate);

[0054] DMDEE (amine catalyst) 0.1 part.

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Abstract

The invention belongs to the technical field of polyurethane hot melt adhesives, and particularly relates to a moisture-curable polyurethane hot melt adhesive, a preparation method and application thereof, and a steel member. The single-component moisture-curable polyurethane hot melt adhesive is prepared from the following raw materials: a hot melt adhesive main body, a coupling agent and an auxiliary agent, wherein all the components are suitable for forming the polyurethane hot melt adhesive with the solid content of 100%. In the using process, no small molecules are released, safety, environment friendliness and no pollution are achieved, the moisture-curable polyurethane hot melt adhesive has the advantages of being environmentally friendly, long in service life, high in bonding strength, safe, reliable and the like, no particle or bubbling phenomenon exists after gluing, an adhesive film is flexible and elastic after the adhesive is cured, high-temperature resistance and low-temperature resistance are good, and the moisture-curable polyurethane hot melt adhesive can be widely applied to composite bonding of steel structure veneering materials.

Description

technical field [0001] The invention belongs to the technical field of polyurethane hot-melt adhesives, and in particular relates to a moisture-curing polyurethane hot-melt adhesive, its preparation method, application and steel components. Background technique [0002] Steel structure buildings have the advantages of light weight, high strength, good overall rigidity, and strong deformation ability. They are widely used in the construction of venues, airports, stations, high-rise buildings, and factory buildings. However, as time goes by, steel structure buildings are prone to leakage, which seriously affects the service life of the building. The prior art usually uses sealant or SBS glue to process steel structure materials, but still cannot solve the leakage problem of steel structure buildings. Contents of the invention [0003] The invention provides a moisture-curing polyurethane hot-melt adhesive, its preparation method, application and steel components. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C09J11/08C09J11/06C09J5/00C08G18/48C08G18/42C08G18/58C08G18/62
CPCC08G18/4063C08G18/42C08G18/48C08G18/58C08G18/6216C08K2201/011C09J5/00C09J11/04C09J11/06C09J11/08C09J175/08C09J2400/163C09J2427/006C09J2475/00C08K3/36C08K5/1345C08K5/544
Inventor 王怀伟茹正伟张亮
Owner 常州威斯敦粘合材料有限责任公司
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