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Waterborne polyurethane dispersion and waterborne adhesive

A water-based polyurethane and water-based adhesive technology, which is applied in the field of materials, can solve the problems that cannot be practically applied in the field of passenger cars, the adhesion strength of low-polarity materials cannot be reached, and the health of the user's respiratory system is affected. Shear strength, high peel strength, the effect of avoiding emissions

Pending Publication Date: 2022-07-01
广州昊毅新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The adhesives used in existing low-polarity materials are basically oily neoprene. Oily neoprene has high adhesion and good firmness, and has been used as a low-polarity interior decoration for passenger cars for a long time. The material is pasted and used, and neoprene generally has a problem of strong odor, which causes serious odor problems in passenger cars for a long time, which brings great troubles to consumers. In addition, organic neoprene is used in neoprene Solvent is used as a solvent, causing the VOC in the car to exceed the standard seriously, which affects the health of the user's respiratory system
However, the adhesive strength of existing two-component water-based polyurethane adhesives to low-polarity materials cannot meet the requirements of passenger cars, and cannot be practically applied in the field of passenger cars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The aqueous polyurethane dispersion in this example was prepared from the following raw materials by weight: 15 parts of IPDI; 15 parts of FX9203; 5 parts of FX9001; 2 parts of isobornyl methacrylate; 3 parts of 1,4 - Butanediol; 4 parts of DMEA; 0.3 parts of bismuth neodecanoate (wherein the bismuth content is 16%); 15 parts of acetone; 0.5 parts of A-95; 55.2 parts of deionized water.

[0065] The aqueous polyurethane dispersion in this example was prepared by the following preparation method, as follows:

[0066] (1) Put FX9203, FX9001, chain extender 1.4 butanediol into the reaction flask, pass nitrogen for protection, start stirring, and heat up to 110°C at a constant speed, and keep the temperature for 30 minutes;

[0067] (2) cooling the mixed solution in step (1) to 50 ℃, adding IPDI, adding 0.1 part of catalyst organobismuth, slowly warming up to 80 ℃, holding reaction for 3.5 hours;

[0068] (3) cooling the mixed solution in step (2) to 70° C., adding 1 part ...

Embodiment 2

[0072] The aqueous polyurethane dispersion in this example was prepared from the following raw materials by weight: 20 parts of IPDI; 6 parts of FX9203; 10 parts of FX9001; 5 parts of isobornyl methacrylate; 5 parts of 1,4 - Butanediol; 6 parts DMEA; 1.5 parts bismuth neodecanoate (or bismuth isooctanoate); 15 parts acetone; 5 parts A-95; 50 parts deionized water.

[0073] The aqueous polyurethane dispersion in this example was prepared by the following preparation method, as follows:

[0074] (1) Put FX9203, FX9001, chain extender 1.4 butanediol into the reaction flask, pass nitrogen for protection, start stirring, and heat up to 110°C at a constant speed, and keep the temperature for 30 minutes;

[0075] (2) the mixed solution in step (1) is cooled to 50 DEG C, IPDI is added, 1 part of catalyst organobismuth is added, and the temperature is slowly raised to 80 DEG C, and the reaction is incubated for 3.5 hours;

[0076] (3) cooling the mixed solution in step (2) to 70° C., ...

Embodiment 3

[0081] The water-based adhesive in this example includes component A and component B; the mass ratio of component A and component B is 20:1; the component A includes the following raw materials by weight: 85 parts of Example 1 0.3 parts of TEGO270; 0.3 parts of Xianchuang SF-561; 0.3 parts of BASF PU1190 (a water-based polyurethane thickener of BASF); 14.1 parts of deionized water; the B component is Covestro waterborne hardener DN (waterborne isocyanate hardener from Covestro, Germany).

[0082] The water-based adhesive in this example was formulated using the following preparation method:

[0083] (1) take by weighing each raw material of A component, mix and stir to obtain A component;

[0084] (2) According to the ratio of the mass ratio of the A component to the B component of 20:1, weigh the A component and the B component, and then mix and stir evenly to prepare the water-based adhesive in this example.

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PUM

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Abstract

The invention discloses a waterborne polyurethane dispersion and a waterborne adhesive. The waterborne polyurethane dispersion is prepared from the following raw materials in parts by weight: 15-20 parts of alicyclic isocyanate; 11 to 25 parts of cashew nut shell oil polyol; according to the waterborne polyurethane dispersion disclosed by the invention, the cashew nut shell oil polyol reacts with the alicyclic isocyanate to generate polyurethane micelles, meanwhile, a bridged ring structure in the isobornyl methacrylate is grafted onto the polyurethane micelles, and chain segment movement in polyurethane is inhibited through the bridged ring structure, so that the waterborne polyurethane dispersion has the advantages that the polyurethane micelles are uniformly dispersed, and the water-based polyurethane dispersion is prepared. Further, the shrinkage performance of the waterborne polyurethane dispersion is improved, the surface tension of polyurethane micelles is reduced, and the peel strength is improved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an aqueous polyurethane dispersion and an aqueous adhesive. Background technique [0002] Adhesives used in existing low-polarity materials are basically mainly oil-based neoprene. Oil-based neoprene has high adhesion and good firmness, and has long been used for low-polarity interior decoration in passenger cars. The material is pasted and used, and neoprene generally has the problem of strong odor, which makes the passenger car have a serious odor problem for a long time, which brings great trouble to consumers. Solvents are used as solvents, causing serious excess of VOCs in the car and affecting the health of the user's respiratory system. However, the adhesion strength of the existing two-component water-based polyurethane adhesive to low-polarity materials cannot meet the requirements of passenger cars, and cannot be practically applied in the field of passenger cars. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/18C08G18/36C09J151/08
CPCC08F283/006C08G18/36C09J151/08C08F220/1811
Inventor 张国华胡乐平李平黄华
Owner 广州昊毅新材料科技股份有限公司
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