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Flame-retardant two-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, applied in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., to achieve long-lasting and stable flame retardancy, simple manufacturing process, and high compatibility

Pending Publication Date: 2022-04-26
杭州得力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of existing polyurethane adhesives, the present invention provides a flame-retardant two-component polyurethane adhesive and its preparation method. The product is divided into two components: A (main agent) and B (curing agent). Mass ratio 1:(0.5~1.5) can be mixed and prepared

Method used

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  • Flame-retardant two-component polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] First, add 185.86kg of 1,2-dibromoethylene, 72.11kg of 3-buten-1-ol, 110.56kg of anhydrous methanol, and 111.00g of azobisisobutyronitrile into a reactor with a condenser, and start the agitator. Heat to the temperature of the reaction system at about 70°C, and maintain the reaction at this temperature; take a sample to measure the hydroxyl value of the prepolymer, and when the hydroxyl value is between 210.0 and 220.0 mgKOH / g, the reaction can be ended, and the temperature is lowered to 40~ 50°C, vacuum pumping and recovery of the solvent, and then the material can be discharged when the temperature is lowered to below 40°C to obtain a brominated polyol prepolymer for use.

[0119] Then, prepare the flame-retardant two-component polyurethane glue:

[0120]Preparation of component A (main agent): 35.00kg of the brominated polyol prepolymer prepared above, 10.00kg of polycastor oil adipate polyol, 5.00kg of polybutylene adipate diol, polybutylene adipate Add 9.00kg of c...

Embodiment 2

[0124] First, add 185.86kg of 1,2-dibromoethylene, 144.22kg of 3-buten-1-ol, 82.45kg of butyl acetate, and 206.12g of dibenzoyl peroxide into the reactor of the condenser, start the agitator, and heat The temperature of the reaction system is around 80°C, and the reaction is maintained at this temperature; the hydroxyl value of the prepolymer is measured by sampling. When the reaction reaches a hydroxyl value between 210.0 and 220.0 mgKOH / g, the reaction can be terminated, and the temperature is lowered to 40~ 50°C, vacuum pumping and recovery of the solvent, and then the material can be discharged when the temperature is lowered to below 40°C to obtain a brominated polyol prepolymer for use.

[0125] Then, prepare the flame-retardant two-component polyurethane glue:

[0126] Preparation of component A (main agent): 10.00kg of brominated polyol prepolymer prepared above, 15.00kg of polyethylene glycol 600, 10.00kg of polyoxypropylene glycol, 10.00kg of polyoxypropylene triol, ...

Embodiment 3

[0130] First, add 185.86kg of 1,2-dibromoethylene, 108.17kg of 3-buten-1-ol, 97.91kg of benzene, and 156.66g of tert-butyl peroxybenzoate into a reactor with a condenser, and start the agitator , heated to the temperature of the reaction system around 75°C, and maintained at this temperature for the reaction; take samples to measure the hydroxyl value of the prepolymer, and when the reaction reaches a hydroxyl value between 210.0 and 220.0 mgKOH / g, the reaction can be terminated, and the temperature can be lowered to 40-50°C, vacuum pumping and recovery of the solvent, and then the material can be discharged when the temperature is lowered to below 40°C, and the brominated polyol prepolymer is obtained for use.

[0131] Then, prepare the flame-retardant two-component polyurethane glue:

[0132] Preparation of component A (main agent): 20.00kg of brominated polyol prepolymer, 8.00kg of refined castor oil, 7.00kg of polyethylene adipate-propylene glycol ester diol, polyoxypropyl...

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Abstract

The invention provides a flame-retardant two-component polyurethane adhesive and a preparation method thereof. The flame-retardant double-component polyurethane adhesive comprises a main agent and a curing agent which are mixed according to a set proportion. The main agent takes a brominated polyol prepolymer, polyester and / or polyether polyol as main components, and inorganic filler and a catalyst are added at the same time; the curing agent is mainly composed of a polyisocyanate compound. The flame-retardant double-component polyurethane adhesive has the advantages that the raw materials are convenient to obtain, the manufacturing process is simple, the obtained product can be cured at room temperature, the adhesive has intrinsic flame retardance, the flame-retardant effect is lasting and stable, and the finished product is good in physical and mechanical properties and high in bonding strength.

Description

technical field [0001] The invention belongs to the technical field of room temperature curing adhesives, in particular to a flame-retardant two-component polyurethane adhesive and a preparation method thereof, which are used for self-adhesion, mutual adhesion, fixing, Sealing, repairing, etc. Background technique [0002] Polyurethane (PU) adhesive is an adhesive containing isocyanate group (—NCO) or urethane group (—NHCOO—) in its molecular structure. It is one of the important types of synthetic adhesives. [0003] Polyurethane adhesive has excellent physical and mechanical properties such as elasticity, wear resistance, adhesion, weather resistance, flexibility, etc., coupled with its flexible formula, various product forms, and excellent performance of finished products, it has been widely used in various industries around the world. Rapid development and promotion, widely used in aerospace, military industry, automobile, wood, light industry, packaging, construction a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/04C08G18/62C08G18/48C08G18/44C08G18/42
CPCC09J175/04C09J11/04C08G18/4063C08G18/6275C08G18/4202C08G18/4288C08G18/4238C08G18/44C08G18/4833C08G18/4825C08G18/4829C08G18/4812C08G18/4891C08G18/4283C08K3/2279
Inventor 沈良
Owner 杭州得力科技股份有限公司
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