Polyurethane adhesive with high water resistance

A technology of water resistance and polyurethane, applied in polyurea/polyurethane adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve problems such as low tensile strength, price rise, and restrictions. Achieve the effects of wide and rich sources, guarantee timeliness, and increase tensile strength

Inactive Publication Date: 2020-12-29
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

[0010] Since the polyol polymer is derived from castor oil, and the current domestic supply of castor oil mainly comes from India, the supply will be limited by the 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of highly water-resistant polyurethane binder, comprises main agent and curing agent, and main agent takes raw material according to the weight percentage of following each composition: trifunctional polyether polyol 24%, soybean oil polyester polyol (molecular weight 1200, Hydroxyl value 130, functionality 2.5) 30%, 1,4-bis-sec-butylaminobenzene 1%, polyacetal resin 4%, zeolite powder 10%, dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1% .

[0029] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0030] Further improved, the preparation method of the highly water-resistant polyurethane adhesive comprises the following steps:

[0031] S1: Prepare the main ingredient: add trifunctional polyether polyol and soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5), polyaldehy...

Embodiment 2

[0041] A kind of high water-resistance polyurethane binder, comprises main agent and curing agent, and main agent takes raw material according to the weight percentage of following each composition: trifunctionality polyether polyol 35%, soybean oil polyester polyol (molecular weight 1200, Hydroxyl value 130, functionality 2.5) 20%, 1,4-bis-sec-butylaminobenzene 1%, polyaldehyde resin 4%, zeolite powder 10%, dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1% .

[0042] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0043] Further improved, the preparation method of the highly water-resistant polyurethane adhesive comprises the following steps:

[0044] S1: Prepare the main ingredient: add trifunctional polyether polyol and soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5), polyal...

Embodiment 3

[0054] A high water-resistant polyurethane adhesive, comprising a main agent and a curing agent, the main agent includes the following raw materials: trifunctional polyether polyol, soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5 ), polyaldehyde resin, dispersant BYKP104, zeolite powder, silicon micropowder, iron oxide red powder.

[0055] Further improved, raw materials were weighed according to the weight percentage of the following components: 15% of trifunctional polyether polyol, 40% of soybean oil polyester polyol (molecular weight 1200, hydroxyl value 130, functionality 2.5), polyaldehyde resin 4 %, zeolite powder 10%, dispersant BYKP104 0.5%, silicon micropowder 29.5%, iron oxide red powder 1%.

[0056] Further improved, the curing agent contains 50% polymethylene polyphenylisocyanate PAPI (NCO=32%, functionality 2.7) and 50% modified MDI prepolymer (NCO=23%, functionality 2).

[0057] Further improved, the preparation method...

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Abstract

The invention discloses a polyurethane binder with high water resistance, which comprises a main agent and a curing agent, and the main agent comprises the following raw materials: trifunctional polyether polyol, soybean oil polyester polyol, 1, 4-bis(sec-butylaminobenzene), polyaldehyde resin, a dispersant BYKP104, zeolite powder, silica powder and iron oxide red powder. The curing agent comprises 50% of a polymethylene polyphenyl isocyanate (PAPI) and 50% of a modified MDI prepolymer. 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 greatfluctuation. The timeliness of supply and the stability of cost price can be effectively guaranteed. The soybean oil polyhydric alcohol mainly containing polyester is adopted, so that the tensile strength of a cured product is greatly improved. The polyaldehyde resin 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 highly water-resistant polyurethane adhesive. Background technique [0002] Polyurethane adhesive has the characteristics of good mechanical properties, good toughness, adjustability, simple bonding process, excellent low temperature resistance and excellent stability, and its application range is becoming wider and wider. Anti-slip pavement is generally seen in outdoor road environments that require high friction deceleration, such as bus stops, jogging paths in parks, sharp turns on roads, tunnel exits, and highway entrances and exits. The construction sequence is generally to lay the concrete or asphalt base first, then spread the adhesive, then spread the inorganic particle aggregate, and solidify and form. This requires the adhesive to have excellent bond strength and weather resistance. [0003] According to the type of polymer material used, colored pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/08C08G18/68C08G18/66C08G18/48C08G18/32
CPCC08G18/324C08G18/4829C08G18/6685C08G18/68C08K2003/2272C09J11/04C09J11/08C09J175/14C08L59/00C08K7/26C08K3/36C08K3/22
Inventor 雷旭华任鹏蒋王伟
Owner 湖南太合科创生态有限公司
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