Solvent-free polyurethane binder for colored pavements and preparation method thereof

A solvent-free polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of low tensile strength, price increase, adhesive products Supply price fluctuations and other issues, to achieve the effect of ensuring timeliness, improving tensile strength, and having a wide range of sources

Inactive Publication Date: 2020-08-07
REALTEC CHEM RTC SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supply will be limited by origin of raw materials
Especially in 2020, due to the impact of the new crown epidemic around the world, India closed the city, resulting in unstable supply of castor oil raw materials and a sharp rise in prices
As a result, the supply and price of the adhesive product have fluctuated greatly
In addition, unmodified castor oil is low tensile strength (<10 MPa) of cured product made of polyol

Method used

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  • Solvent-free polyurethane binder for colored pavements and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A solvent-free polyurethane binder for colored pavements, comprising a main agent and a curing agent, the main agent takes raw materials according to the weight percentage of the following components: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functional 5) 24%, soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5) 30%, 1,4-bis-sec-butylaminobenzene 1%, diisopropylnaphthalene 4%, zeolite powder 10% , Dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1%.

[0028] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0029] Further improved, the preparation method of the solvent-free polyurethane adhesive for colored pavement comprises the following steps:

[0030] S1: Prepare the main ingredient: combine soybean oil polyester polyol (molecular weight 2500, ...

Embodiment 2

[0040] A solvent-free polyurethane binder for colored pavements, comprising a main agent and a curing agent, the main agent takes raw materials according to the weight percentage of the following components: soybean oil polyester polyol (molecular weight 2500, hydroxyl value 330, functional 5) 35%, soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5) 20%, 1,4-bis-sec-butylaminobenzene 1%, diisopropylnaphthalene 4%, zeolite powder 10% , Dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1%.

[0041] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0042] Further improved, the preparation method of the solvent-free polyurethane adhesive for colored pavement comprises the following steps:

[0043] S1: Prepare the main ingredient: combine soybean oil polyester polyol (molecular weight 2500, ...

Embodiment 3

[0053] A solvent-free polyurethane adhesive for colored pavements, comprising a main agent and a curing agent, the main agent includes the following ingredients raw materials: 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), diisopropylnaphthalene, dispersant BYKP104, zeolite powder, silicon micropowder, iron oxide red powder.

[0054] Further improved, take raw material according to the weight percent of following each composition: 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%, diisopropylnaphthalene 4%, zeolite powder 10%, dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1%.

[0055] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=...

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Abstract

The invention discloses a solvent-free polyurethane binder for colored pavements. The solvent-free polyurethane binder comprises a main agent and a curing agent, the main agent comprises the followingraw materials: soybean oil polyester polyol, soybean oil polyester polyol, 1, 4-bis (sec-butylaminobenzene), diisopropylnaphthalene, a dispersant BYKP104, zeolite powder, silica powder and iron oxidered 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, is green and environment-friendly, and is not easily influenced by a single supplier to generate great fluctuation. 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 resinmainly containing polyether. The diisopropylnaphthalene toughening agent is used, so that the water resistance of the product can be improved while toughening is carried out.

Description

technical field [0001] The invention relates to the technical field of preparation of adhesives, in particular to a solvent-free polyurethane adhesive for colored pavement and a preparation method thereof. Background technique [0002] With the development of the economy and the progress of the society, people put forward new ideas in terms of traffic warning, visual safety guidance, and beautiful road surface in addition to the daily road performance of the main roads of the city and other motor vehicle lanes, non-motor vehicle lanes, and sidewalks. requirements. Currently common black asphalt pavement and gray cement concrete pavement, these two pavements can no longer fully meet the above growing new demands for pavement. Colored pavement can be used to enhance road safety, warn passing vehicles, standardize road categories, facilitate operation management, and maintain traffic safety by laying a layer of colored pavement on the existing road surface. At the same time, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06C08G18/68C08G18/32
CPCC08G18/324C08G18/68C08K2003/2272C09J11/04C09J11/06C09J175/14C08K5/01C08K7/26C08K3/36C08K3/22C08K13/04
Inventor 李炜王宇桂游沛
Owner REALTEC CHEM RTC SHANGHAI
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