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Preparation method of polyurethane binder

An adhesive, polyurethane technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of poor elasticity retention, irritating odor, cracking, etc., and achieve tensile strength improvement, Guarantee timely, wide-ranging and rich effects

Inactive Publication Date: 2021-01-15
湖南太合科创生态有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among them, although the two-component polymethyl methacrylate (PMMA) binder has good weather resistance and mechanical strength, the material has a pungent odor (from acrylic acid monomer and reactive diluent crosslinking agent), and belongs to Flammable and explosive dangerous chemicals have high requirements for storage and transportation, and the price is relatively expensive; in addition, because the curing process is free radical polymerization, the amount of initiator added has a great impact on the pot life after batching. If the curing is too fast during the operation, the wetting time of the substrate and aggregate is not enough, and it is easy to cause adhesion defects
[0006] The two-component solvent-free epoxy resin adhesive has good adhesion and mechanical strength, but due to its poor elasticity retention rate at low temperature, it will cause cracking when the road surface is used, especially when it is paved on a low-strength road. Residential asphalt base

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]A method for preparing a polyurethane adhesive, comprising a main agent and a curing agent. The main agent is weighed according to the weight percentages of the following ingredients: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5) 24% , Soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5) 30%, 1,4-bis-sec-butylaminobenzene 1%, diisopropyl naphthalene 4%, zeolite powder 10%, dispersant BYKP1040 .5%, 29.5% silicon powder, 1% iron oxide red powder.

[0022]In a further improvement, the curing agent contains 50% polymethylene polyphenyl isocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0023]In a further improvement, a method for preparing a polyurethane adhesive includes the following steps:

[0024]S1: Preparation of the main agent: the soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5) and soybean oil polyester ...

Embodiment 2

[0034]A method for preparing a polyurethane adhesive, comprising a main agent and a curing agent. The main agent is weighed according to the weight percentages of the following ingredients: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5) 35% , Soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5) 20%, 1,4-bis-sec-butylaminobenzene 1%, diisopropyl naphthalene 4%, zeolite powder 10%, dispersant BYKP1040 .5%, 29.5% silicon powder, 1% iron oxide red powder.

[0035]In a further improvement, the curing agent contains 50% polymethylene polyphenyl isocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0036]In a further improvement, a method for preparing a polyurethane adhesive includes the following steps:

[0037]S1: Preparation of the main agent: the soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5) and soybean oil polyester ...

Embodiment 3

[0047]A method for preparing a polyurethane adhesive, comprising a main agent and a curing agent. The main agent includes the following ingredients: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5), soybean oil polyester polyol (Molecular weight 1200, hydroxyl value 130, functionality 2.5), diisopropyl naphthalene, dispersant BYKP104, zeolite powder, silica powder, iron oxide red powder.

[0048]In a further improvement, the raw materials are weighed according to the weight percentages of the following components: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functionality 5) 15%, soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, Functionality 2.5) 40%, diisopropyl naphthalene 4%, zeolite powder 10%, dispersant BYKP1040.5%, silicon powder 29.5%, iron oxide red powder 1%.

[0049]In a further improvement, the curing agent contains 50% polymethylene polyphenyl isocyanate PAPI (NCO=32%, functionality 2...

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Abstract

The invention discloses a preparation method of a polyurethane binder. The polyurethane binder comprises a main agent and a curing agent, and the main agent comprises the following raw materials: soybean oil polyester polyol, soybean oil polyester polyol, 1, 4 bis (sec-butylaminobenzene), diisopropylnaphthalene, a dispersant BYKP104, zeolite powder, silica powder and iron oxide red powder. Polyhydric alcohol resin taking soybean oil derivatives as main components is adopted as a hydroxyl component, and the soybean oil is wide and rich in source, belongs to an all-natural renewable resource, isgreen and environment-friendly, and is not easily influenced by a single supplier to generate great fluctuation, so that the timeliness of supply and the stability of cost price can be effectively guaranteed. The soybean oil polyol mainly containing polyester is adopted, so that the tensile strength of the cured product is greatly improved compared with the common grease polyol resin mainly containing polyether. The diisopropylnaphthalene toughening agent is used, so that the water resistance of the product can be improved while the product is toughened.

Description

Technical field [0001] The present invention relates to the technical field of preparation of adhesives, and more specifically to a preparation method of polyurethane adhesives. Background technology [0002] With the development of the economy and the progress of society, people have put forward new ideas for urban main roads and other motor vehicle lanes, non-motor vehicle lanes, sidewalks and other roads in addition to their daily road performance in terms of traffic warnings, visual safety guidance, and road surface aesthetics. requirements. The currently common black asphalt pavement and gray cement concrete pavement can no longer fully meet the above-mentioned growing new demands for pavement. Colored pavement can be used to enhance road driving safety, warn passing vehicles, standardize road categories, facilitate operation and management, and maintain traffic safety by laying a colored pavement layer on the existing road surface. At the same time, it can also be us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06C08G18/79C08G18/76C08G18/68C08G18/32C08K13/04C08K7/26C08K3/36C08K3/22C08K5/01
CPCC08G18/325C08G18/68C08G18/7664C08G18/794C08K2003/2272C08K2201/005C09J11/04C09J11/06C09J175/14C08K13/04C08K7/26C08K3/36C08K3/22C08K5/01
Inventor 任鹏雷旭华
Owner 湖南太合科创生态有限公司
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