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Adhesive and use thereof

A technology of adhesives and compositions, applied in the direction of adhesive types, adhesives, polyurea/polyurethane adhesives, etc., can solve problems such as the adverse effect of curing speed on the performance of cured products and adherends

Inactive Publication Date: 2009-08-05
NAT STARCH & CHEM INVESTMENT HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the above two adhesives are usually only suitable for operation within a certain temperature range due to their fixed components. When the temperature changes, the curing speed, cured product and the performance of the adherend will be greatly affected.

Method used

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  • Adhesive and use thereof
  • Adhesive and use thereof
  • Adhesive and use thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0106] Preparation of the three-component adhesive

[0107] [043] In one embodiment, the three-component adhesive of the present invention is prepared as follows: A component contains one or more polyol resins, including polyester polyol, polyether polyol or a combination thereof, and simultaneously formulates It is made by mixing appropriate substances at a certain temperature and under the action of dispersing equipment; component B contains isocyanate curing agent, which includes TDI and its derivatives, MDI and its derivatives, or their combination; group C It contains general-purpose polyurethane curing catalyst and appropriate substances, mixed at a certain temperature and under the action of dispersing equipment.

[0108] Use of three-component adhesives

[0109] [044] In one embodiment, the present invention provides a method of using a three-part adhesive comprising a first part comprising one or more polyols at different temperatures a second component containi...

Embodiment 1

[0137] Example 1. Preparation of three-component adhesive 1

[0138] [054] Three-component polyurethane adhesives of different formulations (see Table 1 below) were prepared according to the following procedure. To prepare the first component (component A1), 60% by weight of the weight of component A1 of German Bayer polyether polyol 1380BT was poured into a clean stirred tank and the composition was mixed thoroughly. And pour 39wt% of quartz powder and 1wt% of auxiliary agents such as defoamers into the stirring tank respectively and stir. Stirring was continued for 60 minutes after all ingredients were added, vacuum and heat were applied to the stirred tank, and vacuum was maintained for 1 hour after the stirred tank contents reached 110°C. Then, after the vacuum was stopped, the contents of the stirred tank were discharged into another clean container and cooled to room temperature. At this point, component A1 is ready for use in the three-component adhesive. The secon...

Embodiment 2

[0139] Example 2. Preparation of three-component adhesive 2

[0140] [055] Three-component polyurethane adhesives of different formulations (see Table 2 below) were prepared according to the following procedure. To prepare the first component (component A2), pour 40wt% German Bayer polyether polyol 1380BT and 20wt% polyethylene adipate diol (PEA3000) into a clean Stir in the kettle and mix the composition thoroughly. And pour 39wt% of quartz powder and 1wt% of auxiliary agents such as defoamers into the stirring tank respectively and stir. Stirring was continued for 60 minutes after all ingredients were added, vacuum and heat were applied to the stirred tank, and vacuum was maintained for 1 hour after the stirred tank contents reached 110°C. Then, after the vacuum was stopped, the contents of the stirred tank were discharged into another clean container and cooled to room temperature. At this point, component A2 is ready for use in the three-component adhesive. The secon...

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Abstract

The invention provides a three component adhesive composite which comprises a first component containing one or a plurality of polylols, a second component containing one or a plurality of isocyanates, and a third component containing one or a plurality of common polyurethane catalysts or modified catalysts thereof. The invention realizes the expected adhesive curing speed and the expected adhering strength at the temperature with wide range by adjusting the adding proportion of the third component according to different applications.

Description

technical field [0001] [001] The present invention relates to an adhesive composition, in particular to a three-component polyurethane adhesive composition that can easily adjust its properties such as curing speed and bond strength over a wide temperature range. Background technique [0002] [002] The composition of the existing one-component adhesive is generally an isocyanate-terminated prepolymer, and the composition of the two-component adhesive is generally that the A component is a polyol resin mixture, including polyester polyol and Polyether polyol, etc.; component B is a curing agent, including isocyanate, such as TDI and its derivatives, MDI and its derivatives, etc., and the addition ratio is 15-50% of component A. For different ambient temperatures, in order to ensure the curing speed and bonding strength of the adhesive, the composition of component A will be different. This introduces uncertain factors into the production, transportation, glue distribution, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06
CPCC08G18/48C08G18/4018C08G18/10C09J175/04C08G18/1808Y10T428/2896C08G18/40
Inventor 邱建林张辉
Owner NAT STARCH & CHEM INVESTMENT HLDG CORP
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