Waterborne polyurethane adhesive composition and preparing method thereof

A technology of water-based polyurethane and composition, applied in the field of adhesives and chemical industry, it can solve the problems of poor initial adhesion strength, low peel strength, initial tack, poor bond strength and peel strength, etc., achieve excellent water resistance, low cost, and increase water resistance Effect

Inactive Publication Date: 2016-04-13
潘庆辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many shortcomings, and various modifications are needed to improve its functions.
For example, the Chinese patent document of 200810039082.5 discloses a kind of preparation method that can be used as the water-based polyurethane emulsion of adhesive agent for automobile interior decoration, although water-based polyurethane emulsion is more environmentally friendly, its initial tack, cohesive strength, peeling strength are all relatively poor
The Chinese patent document whose application number is 200710026211.2 discloses a preparation method of a modified water-based polyurethane adhesive, which uses phosphoric acid or acetic acid to modify the epoxy resin to obtain a modified epoxy resin; polyisocyanate and oligomer polyol As a raw material, a polyurethane prepolymer is obtained after adding a chain extender; the modified epoxy resin is used to modify the polyurethane prepolymer to obtain a modified polyurethane prepolymer. Due to the introduction of a crosslinking agent and Epoxy resin, the cohesive strength and bond strength of the modified waterborne polyurethane adhesive have been improved, but its initial bond strength is still poor, and the peel strength is still low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Recipe: a water-based polyurethane adhesive composition, the composition is composed of the following components by weight: 45 parts of modified polyurethane, 2 parts of acrylic leveling agent, 3 parts of dodecylbenzenesulfonic acid, filler 2 parts, 1 part of dioctyl sulfosuccinate sodium salt, 3 parts of curing agent, 12 parts of butyl glycol ether, 5 parts of aziridine, 4 parts of antioxidant, 3 parts of flame retardant.

[0022] The preparation method of described aqueous polyurethane adhesive composition comprises the steps:

[0023] (1) Preparation of modified polyurethane:

[0024] Heat acetone, 2,2-dimethylolpropionic acid, polyethylene glycol, γ-glycidoxypropyltrimethoxysilane, epoxy resin E-44, hydrogenated diphenylmethane diisocyanate to 60~75°C, react for 0.5~1h to obtain intermediate product A; then add 1,4-butanediol to the system, continue the reaction to obtain intermediate product B; add triethylamine to the system at 40°C, stir and neutralize , and th...

Embodiment 2

[0028] Formula: a water-based polyurethane adhesive composition, the composition is composed of the following components by weight: 55 parts of modified polyurethane, 5 parts of silicone leveling agent, 1.5 parts of sodium dodecylbenzenesulfonate, filler 3 parts of agent, 1 part of fatty alcohol polyoxyethylene ether, 4 parts of curing agent, 11 parts of propylene glycol methyl ether, 8 parts of triethylenetetramine, 5 parts of antioxidant, and 3 parts of flame retardant.

[0029] The preparation method of described aqueous polyurethane adhesive composition comprises the steps:

[0030] (1) Preparation of modified polyurethane:

[0031] Heat acetone, 2,2-dimethylolbutyric acid, polypropylene glycol, γ-glycidoxypropyl trimethoxysilane, epoxy resin E-51, dimethylene phenyl diisocyanate to 60 ~75°C, react for 0.5~1h to obtain intermediate product A; then add 1,4-butanediol to the system and continue the reaction to obtain intermediate product B; add ethylenediamine to the system...

Embodiment 3

[0035] Recipe: a water-based polyurethane adhesive composition, the composition is composed of the following components by weight: 60 parts of modified polyurethane, 4 parts of acrylic leveling agent, 3 parts of sodium dodecylbenzenesulfonate, filler 2 parts of agent, 1 part of fatty alcohol polyoxyethylene ether, 3 parts of curing agent, 12 parts of propylene glycol butyl ether, 9 parts of triethylenetetramine, 7 parts of antioxidant, and 3 parts of flame retardant.

[0036] The preparation method of described aqueous polyurethane adhesive composition comprises the steps:

[0037] (1) Preparation of modified polyurethane:

[0038] Acetone, 2,2-dimethylolpropionic acid, polytetrahydrofuran ether glycol, γ-glycidoxypropyltrimethoxysilane, epoxy resin E-44, 1,6-hexamethylene di Mix isocyanates, heat to 60~75°C, react for 0.5~1h to obtain intermediate product A; then add 1,4-butanediol to the system, continue the reaction to obtain intermediate product B; add triethylene to the ...

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PUM

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Abstract

The invention discloses a waterborne polyurethane adhesive composition and a preparing method thereof. The composition is prepared from, by weight, 40-70 parts of modified polyurethane, 2-8 parts of a flatting agent, 1.5-4 parts of a waterborne wetting agent, 1-5 parts of a filling agent, 0.5-2 parts of a penetrating agent, 2-6 parts of a curing agent, 10-15 parts of waterborne cosolvent, 4-20 parts of a crosslinking agent, 3-10 parts of an antioxidant and 2-5 parts of fire retardant. The waterborne polyurethane adhesive composition is high in bonding strength, initial bonding strength and peeling strength and has dirt resistance, flame retardance and other good properties, and meanwhile the preparing method is simple in process and low in cost.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to the technical field of adhesives, in particular to a water-based polyurethane adhesive composition and a preparation method thereof. Background technique [0002] Polyurethane (PU) refers to the abbreviation of high polymer polyurethane (Polyurethane) containing a large number of carbamate groups (-NHCOO-) in the main chain. Because of its excellent physical and chemical properties, it has been widely used in the synthetic leather and artificial leather industries. It is a multifunctional polymer material. It has become an indispensable class of polymer materials in social and economic development. Polyurethane adhesives have the advantages of adjustable hardness, low temperature resistance, good flexibility, and high bonding strength. They can bond various materials such as metals and non-metals, and are used more and more widely. But at present, the entire polyurethane adhesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/06C08G18/12C08G18/48C08G18/66C08G18/58C08K5/42C08K5/06C08K5/3412
CPCC09J175/08C08G18/12C08G18/4045C08G18/4825C08G18/4833C08G18/4854C08G18/58C08G18/6674C08G18/6692C08K5/06C08K5/3412C08K5/42C09J11/06
Inventor 潘庆辉
Owner 潘庆辉
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