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Double-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problem that the surface resistance cannot be produced, achieve good toughness, easy to wash, and easy to rework and repair Effect

Active Publication Date: 2013-10-23
浙江英飞泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional polyurethane adhesives are easy to dissolve the conductive ink on the board, or react with the ink, and cannot produce the required surface resistance

Method used

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  • Double-component polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 300kg of styrene-grafted polyether polyol, 100kg of polypropylene glycol PPG400 and 100kg of polypropylene glycol PPG2000 were mixed, and stirred at a speed of 100 rpm at 60°C for 20 minutes to obtain a mixture; 1kg of defoamer, 1kg of catalyst and Add 4 kg of water solution to the above mixture, and keep stirring at 60° C. at a speed of 100 rpm for 20 minutes; cool to room temperature to obtain component A. Mix 600kg of imine-modified 4,4'-diphenylmethane diisocyanate and 200kg of crude MDI at room temperature at a speed of 100 rpm to obtain component B.

Embodiment 2

[0037] Styrene grafted polyether polyol 600kg, polypropylene glycol PPG400 195kg and polypropylene glycol PPG2000 195kg were mixed, stirred at a speed of 100 rpm at 70°C for 20 minutes to obtain a mixture; defoamer 2kg, catalyst 2kg and Add 6 kg of water solution to the above mixture, and keep stirring at 70° C. at a speed of 100 rpm for 30 minutes; cool to room temperature to obtain component A. 700kg of imine-modified 4,4'-diphenylmethane diisocyanate and 300kg of crude MDI were stirred and mixed uniformly at a speed of 100 rpm at room temperature to obtain component B.

Embodiment 3

[0039] Styrene grafted polyether polyol 800kg, polypropylene glycol PPG400 300kg and polypropylene glycol PPG2000 300kg were mixed, at 80 ℃ with the speed of 100 revolutions / minute stirring 20 minutes, obtain mixture; Defoamer 3kg, catalyst 3kg and remove Add 8 kg of water solution to the above mixture, and keep stirring at 80° C. at a speed of 100 rpm for 40 minutes; cool to room temperature to obtain component A. Mix 800kg of imine-modified 4,4'-diphenylmethane diisocyanate and 400kg of crude MDI at room temperature at a speed of 100 rpm to obtain component B.

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Abstract

The invention provides a double-component polyurethane adhesive and a preparation method thereof. The double-component polyurethane adhesive, according to part by weight, comprises component A: 300-800 (preferably 500-700, more preferably 600) parts of styrene grafted polyether polyol, 100-300 (preferably 170-210, more preferably 195) parts of polypropylene glycol PPG400, 100-300 (preferably 170-210, more preferably 195) parts of polypropylene glycol PPG2000, and 1-20 (preferably 3-14) parts of selectively added additives; and component B: 600-800 (preferably 700) parts of imine modified 4,4'-diphenylmethanediisocyanate, and 200-400 (preferably 300) parts of coarse MDI (Diphenylmethanediisocyanate). The polyurethane adhesive has excellent initial cohesive force and excellent toughness; after the adhesive is completely cured, a bonded PP (Poly Propylene) plate can be stripped and repaired, and simultaneously is resistant to water washing; and the adhesive is matched with ink on the PP plate to reach satisfactory surface resistance.

Description

technical field [0001] The invention relates to a two-component polyurethane adhesive and a preparation method thereof, in particular to a two-component polyurethane adhesive used for filter screen materials and a preparation method thereof. The adhesive can produce surface resistance meeting requirements when combined with conductive ink. Background technique [0002] The filter screen of a conventional electrostatic precipitator includes cathode plates and anode plates arranged in parallel and alternately. The inlet and outlet passages of the filter screen are perpendicular to the cathode and anode plates; the cathode and anode plates are respectively arranged up and down in dislocation to form a disc-shaped passage for the purified gas to flow. Conventional polyurethane adhesives can easily dissolve the conductive ink on the board, or react with the ink, and cannot produce the required surface resistance. [0003] Two-part polyurethane adhesives typically have an A-part ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08
Inventor 熊勇张小蓉
Owner 浙江英飞泰科技有限公司