Polyurethane adhesive, preparation method thereof and aluminum honeycomb plate

A technology of polyurethane adhesive and polyurethane prepolymer, applied in polyurea/polyurethane adhesives, adhesives, adhesive additives, etc., can solve problems such as bonding strength attenuation, achieve enhanced bonding performance, and ensure bonding Strength and flexibility, the effect of solving the roller peel strength and flat tensile strength

Active Publication Date: 2020-07-28
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a polyurethane adhesive to solve the problem of attenuation of the bonding strength of the polyurethane adhesive after curing when the existing polyurethane adhesive proposed in the above background technology is assembled into an aluminum honeycomb panel The problem of phenomena

Method used

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  • Polyurethane adhesive, preparation method thereof and aluminum honeycomb plate
  • Polyurethane adhesive, preparation method thereof and aluminum honeycomb plate
  • Polyurethane adhesive, preparation method thereof and aluminum honeycomb plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of polyurethane adhesive, comprises A component and B component, and described B component is polymethylene polyphenyl polyisocyanate, and consumption is 25kg, and described A component comprises following raw material: Hydroxy-terminated 50kg of polyurethane prepolymer I, 8kg of polyether polyol BP-11 (average molecular weight 400), 5kg of powdered water absorbent (3A molecular sieve is selected) and 37kg of 1500 mesh calcium carbonate. The polyurethane prepolymer I of described hydroxyl termination comprises following raw material: castor oil 41kg, polypropylene glycol (choose VORANOL TM WD2104, the average molecular weight is 400) is 41kg, 3 kg of R-7162, 3 kg of 2-ethyl-1,3-hexanediol, 2 kg of liquid absorbent SL-201, and 10 kg of MDI-100.

[0052] In the present embodiment, the preparation method of the polyurethane adhesive is as follows:

[0053] 1) Weigh castor oil and polypropylene glycol in proportion, stir and mix evenly, vacuumize and remove water ...

Embodiment 2

[0057] A kind of polyurethane adhesive, comprises A component and B component, and described B component is polymethylene polyphenyl polyisocyanate, and consumption is 25kg, and described A component comprises following raw material: Hydroxy-terminated 50kg of polyurethane prepolymer II, 3kg of polyether polyol BP-11 (average molecular weight 400), 11kg of powdered water absorbent (3A molecular sieve is selected) and 36kg of 800 mesh calcium carbonate. The polyurethane prepolymer II of described hydroxyl termination comprises following raw material: castor oil 41kg, polypropylene glycol (choose VORANOL TM WD2104 (average molecular weight: 400) is 41kg, SPC-8973N is 3kg, 2-ethyl-1,3-hexanediol is 3kg, liquid absorbent SL-201 is 2kg and Lupranate 251 is 10kg.

[0058] In the present embodiment, the preparation method of the polyurethane adhesive is as follows:

[0059] 1) Weigh castor oil and polypropylene glycol in proportion, stir and mix evenly, vacuumize at 110°C to remove ...

Embodiment 3

[0063] A kind of polyurethane adhesive, comprises A component and B component, and described B component is polymethylene polyphenyl polyisocyanate, and consumption is 25kg, and described A component comprises following raw material: Hydroxy-terminated Polyurethane prepolymer Ⅰ is 41kg, polyether polyol BP-11 (average molecular weight is 400) 5kg, powder water absorbent (3A molecular sieve is selected) 6kg and 800 mesh talc powder 50kg. The polyurethane prepolymer I of described hydroxyl termination comprises following raw material: castor oil 41kg, polypropylene glycol (choose VORANOL TM WD2104, the average molecular weight is 400) is 41kg, 3 kg of R-7162, 3 kg of 2-ethyl-1,3-hexanediol, 2 kg of liquid absorbent SL-201, and 10 kg of MDI-100.

[0064] In this example, the preparation method of the polyurethane adhesive is the same as Example 1.

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Abstract

The invention relates to the field of chemical engineering, and particularly discloses a polyurethane adhesive, a preparation method thereof and an aluminum cellular plate. The polyurethane adhesive comprises a component A and a component B, and the component A comprises the following raw materials: a hydroxyl-terminated polyurethane prepolymer, polyether polyol, a powder water absorbent and an inorganic filler. The polyurethane adhesive prepared by the preparation method disclosed by the invention has excellent bonding strength. By compounding a hydroxyl-terminated polyurethane prepolymer synthesized by adopting a prepolymerization method with bisphenol A/propylene oxide polyether glycol, the bonding strength and the flexibility of the polyurethane adhesive are ensured, mechanical strength is high, after curing for 60 days, the peeling strength and the plane tensile attenuation of the roller are not greater than 10%, the polyurethane adhesive can be widely applied to the field of aluminum honeycomb plates, the problem that the bonding strength of the cured polyurethane adhesive is attenuated when an existing polyurethane adhesive is assembled into an aluminum honeycomb plate is solved, and the provided preparation method is simple, low in cost and free of pollution to the environment.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a polyurethane adhesive, a preparation method thereof, and an aluminum honeycomb panel. Background technique [0002] As a common building material, aluminum honeycomb panels are widely used in exterior walls and ceilings in the construction field due to their light weight, high strength, and high rigidity. They are also suitable for vehicle and ship decoration, aviation, aerospace and other fields. Generally, in the adhesive installation of aluminum honeycomb panels, polyurethane adhesives are widely used because of their good flexibility, high bonding strength, flexible curing methods, and cost advantages. [0003] At present, as a kind of adhesive containing carbamate group or isocyanate group in the molecular chain of polyurethane adhesive, its microstructure is generally divided into soft segment and hard segment, and the soft segment is a macromolecular chain structure poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C08G18/12C08G18/66C08G18/32C08G18/48C08G18/36C08G18/76B32B15/01B32B15/20B32B3/12B32B7/12
CPCB32B3/12B32B7/12B32B15/016B32B2307/558C08G18/12C08K2003/265C09J11/04C09J175/14C08K7/26C08K3/26C08K3/34C08G18/3215C08G18/4879C08G18/7664
Inventor 王丽媛林孝蔚吴海平向劲松
Owner 上海汉司实业有限公司
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