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Single-component polyurethane adhesive and preparation method and application thereof

A polyurethane adhesive, one-component technology, used in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc.

Active Publication Date: 2019-04-05
廊坊市北辰创业树脂材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the one-component polyurethane adhesives currently available on the market for paper honeycomb composite panels are all linear polyester products, and it is difficult to solve this difficulty.

Method used

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  • Single-component polyurethane adhesive and preparation method and application thereof
  • Single-component polyurethane adhesive and preparation method and application thereof
  • Single-component polyurethane adhesive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] In this example, the preparation process of the one-component polyurethane adhesive material of the present invention is described in detail. The preparation process includes the following steps: 1) ingredient list and performance; 2) production process; the above-mentioned two steps will be described in detail below .

[0044] 1) Ingredients and performance table

[0045] Ingredients list and ingredients basic data

[0046]

[0047]

[0048] 2) Production process

[0049] (1) Add polyester polyol, polyether polyol, ethyl acetate and KH560 into the reaction kettle in sequence according to the proportion. Start the stirrer and keep it at 300 rpm for 30 minutes.

[0050] (2) Add MDI-100, raise the temperature to 50°C within 1 hour, and dissolve it completely.

[0051] (3) Gradually raise the temperature to 70-80°C. After reacting for 1 hour, check the NCO% every half hour. When it reaches 2.3-2.6%, the reaction can be considered complete;

[0052] (4) Cool down...

example 2

[0054] It can be seen that although Example 1 can meet the requirements of mechanical properties, does not break off, does not fall off, and the production process is relatively simple (MDI-100 is not sealed), but the overall bonding strength is low. Due to the high dosage and high price of MDI-100, Instance 1 has a higher overall price. Therefore, in this example, PAPI is used to enhance the overall functionality, and a closed method is used to reduce the risk of curing and gelling. The preparation process includes the following steps: 0) PAPI sealing; 1) ingredient list and performance; 2) production process;

[0055] The above three steps will be described in detail below.

[0056] 1) Ingredients list

[0057] Ingredients list and ingredients basic data

[0058]

[0059] 2) Production process

[0060] (0) PAPI sealing: Mix ethyl acetate and PAPI evenly at a weight ratio of 1:1, add phenol (phenol: PAPI weight ratio is 7:100), gradually raise the temperature to 60-80°...

example 3

[0066] In this example, castor oil is used, and the technology of closed NCO% is used to achieve the bonding strength after baking at a high temperature of 200°C for 30 minutes to reach more than 2MPa, but the process is more complicated and the cost is higher. The preparation process includes the following steps: 0) pretreatment; 1) ingredient list; 2) production process; the above three steps will be described in detail below.

[0067] 1) Ingredients list

[0068] Ingredients list and ingredients basic data

[0069]

[0070] 2) Production process

[0071] (0) PAPI sealing: Mix ethyl acetate and PAPI evenly at a weight ratio of 1:1, add phenol (phenol: PAPI weight ratio is 7:100), gradually raise the temperature to 60-80°C, and wait until the phenol is completely dissolved. Detect the NCO% content every 1 hour, and if the detection reaches 13.7-13.8%, it is qualified, and the material is discharged for standby.

[0072] (1) Add polyester polyol, polyether polyol, ethyl ...

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Abstract

The invention relates to a single-component polyurethane adhesive and a preparation method and application thereof. The single-component polyurethane adhesive, prepared from polyurethane resin, solvents and additives is used directly, and used for adhering between metals or between metal and non-metal materials, such as paper honeycombs, aluminum honeycombs and steel plates. According to high degree of cross-linking of polyurethane resin, solidifying speed of the single-component polyurethane adhesive is increased after being baked at 200 DEG C for 30 minutes, bonding strength is guaranteed, and loss rate of the bonding strength is reduced.

Description

technical field [0001] The invention belongs to the technical field of new materials. Specifically, the invention belongs to the field of a high-temperature-resistant polyurethane adhesive. The invention provides a one-component polyurethane adhesive and a preparation method thereof. Background technique [0002] Honeycomb paper is kraft paper processed to form a regular hexagonal structure. It is made according to the principle of honeycomb structure in nature. It is made by connecting corrugated base paper into countless hollow three-dimensional regular hexagons by glue bonding to form an integral force-bearing part-paper core , and a new type of sandwich structure environmental protection and energy-saving material formed by bonding panels on both sides. Depending on the panel, its use varies greatly. In addition to the paper honeycomb core, the paper honeycomb panels used in the anti-theft door industry mainly use metal plates, such as steel plates. [0003] In the pap...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J175/08C09J175/14C09J11/06C08G18/36C08G18/42C08G18/48C08G18/66C08G18/76C08G18/79
CPCC08G18/36C08G18/4018C08G18/4216C08G18/4238C08G18/48C08G18/6662C08G18/7671C08G18/794C09J11/06C09J175/06C09J175/08C09J175/14C08K5/1345C08K5/526
Inventor 张子印耿志忠
Owner 廊坊市北辰创业树脂材料股份有限公司
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