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An adhesive with anti-corrosion function

An adhesive and anti-corrosion technology, which is applied in the direction of adhesives, non-polymer organic compound adhesives, non-polymer adhesive additives, etc., can solve problems such as adhesive force decline, electrochemical corrosion, and affecting product use. To achieve the effect of improving performance, preventing the occurrence of electrochemistry, and excellent anti-corrosion performance

Active Publication Date: 2022-05-27
湖南创瑾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the adhesive is connected to a metal surface that is easily oxidized or corroded, under high temperature and high humidity, electrochemical corrosion often occurs at the interface between the adhesive and the metal, resulting in the formation of metal oxides at the adhesive / metal interface, and the generation of interface oxides leads to the adhesion of the adhesive. The relay drops, affecting the use of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] 1, the preparation of polyurethane prepolymer: polyethylene glycol 3000 (in terms of raw material weight is 10 parts) under the condition of vacuum of 0.1 MPa, dehydrated at 110 °C for 2h, and then at 80 °C with the dispensed amount of diphenylmethane diisocyanate (measured by weight of raw material is 20 parts) reaction to generate a low molecular weight prepolymer, the reaction time is 2h, the polyurethane prepolymer is obtained, stored under anhydrous conditions.

[0029] 2. Preparation of mixed epoxy resin: 40 parts of bisphenol A type epoxy resin and 60 parts of 4-vinyl cyclohexene (measured by weight of raw material), mixed evenly and then set aside.

[0030] 3, other raw material components are commercially purchased, embodiments of the present invention and the main raw materials used in the proportion are as follows: bisphenol A epoxy resin: E-44; curing agent: N- aminoethyl piperazine; accelerator: calcium carboxylate; filler: microsilica powder; oxygen scavenger:...

Embodiment 1

[0032] An adhesive with anti-corrosion function, the raw material components of which are shown in Table 1 below:

[0033]Table 1. Raw materials for adhesive preparation

[0034] Component Number of mass servings Hybrid epoxy resin 100 Polyurethane prepolymer 30 Curing agent 20 Accelerator 3 stuffing 15 Oxygen scavengers 2 preservative 6

[0035] Preparation and use method of adhesive with anti-corrosion function, comprising the following steps:

[0036] S1, the mixed epoxy resin, accelerator, filler, oxygen scavenger and preservative in order to add the stirring kettle, through the mixer to mix the raw materials evenly;

[0037] S2, in the above raw materials in turn add polyurethane prepolymer and curing agent, stirred for 10min and heated to 80 °C, the preparation of adhesive;

[0038] S3, the adhesive is coated between two layers of galvanized sheet, cured by 1h, to obtain the adhesive glue galvanized sheet products.

Embodiment 2

[0040] An adhesive with anti-corrosion function, the raw material components of which are shown in Table 2 below:

[0041] Table 2. Raw materials for the preparation of adhesives

[0042] Component Number of mass servings Hybrid epoxy resin 80 Polyurethane prepolymer 30 Curing agent 20 Accelerator 3 stuffing 15 Oxygen scavengers 2 preservative 6

[0043] Compared with Example 1, the amount of mixed epoxy resin of the present embodiment is 80 parts, the ratio of mixed epoxy resin to polyurethane prepolymer is 8: 3. The preparation method is the same as In Example 1.

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PUM

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Abstract

The invention discloses an adhesive with anti-corrosion function, characterized in that the adhesive comprises the following raw materials in parts by weight: 80-150 parts of mixed epoxy resin, 20-40 parts of polyurethane prepolymer, cured 10-25 parts of scavengers, 2-5 parts of accelerators, 10-20 parts of fillers, 1-3 parts of oxygen scavengers and 4-8 parts of preservatives; the mixed epoxy resin contains glycidyl ethers, glycidyl esters At least two kinds of cycloaliphatic and cycloaliphatic epoxy resins; the polyurethane prepolymer is prepared by prepolymerization of oligomer polyol and isocyanate, and the mass ratio of oligomer polyol and isocyanate is 1: (1 ~3). The adhesive has strong adhesiveness and corrosion resistance, and is especially suitable for metal surfaces that are prone to oxidation and corrosion.

Description

Technical field [0001] The present invention relates to the field of adhesive technology, specifically to an adhesive having an anti-corrosion function. Background [0002] Adhesive is a substance with good adhesion properties, which is bonded by the surface through adhesion and cohesion to connect the role of the object. Adhesives are divided into natural polymer compounds (such as starch, animal skin glue, bone glue and natural rubber, etc.), synthetic polymer compounds (such as epoxy resin, phenolic resin, urea-formaldehyde resin, polyurethane and other thermosetting resins and polyvinyl alcohol acetal, perchloroethylene resin and other thermoplastic resins or synthetic rubber, etc.), or inorganic compounds (such as silicates, phosphates, etc.). Among them, in industrial production, synthetic polymer adhesives are more commonly used. [0003] Epoxy resin adhesives have a series of excellent properties, such as: good adhesion, wide adhesion range, excellent mechanical propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J11/06C08F283/10C08F236/20C08F283/00
CPCC09J4/06C09J11/06C08F283/10C08F283/006C08F236/20
Inventor 岳利俞国金周佩先
Owner 湖南创瑾科技有限公司
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