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A kind of activator and preparation method thereof

A technology of activator and catalyst, which is applied in the direction of surface pretreatment bonding methods, adhesives, coatings, etc., can solve problems such as difficult to distinguish, poor bonding effect, and controversial activators, so as to enhance the bonding effect and improve cohesive effect

Active Publication Date: 2019-04-09
HANGZHOU ZHIJIANG NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the assembly process of automobile assembly and other electronic and electrical devices, in addition to the need to paste polyurethane glue on the glass substrate, it also often involves the sealing and pasting of the paint substrate, and the improved activation proposed in the prior art Activators are usually aimed at glass substrates, but activator products for painted substrates are rarely reported
For example, the patent application number 200610019424 reports a glass treatment agent, which can improve the bonding effect between the glass substrate and the polyurethane adhesive, but for the paint surface substrate, its bonding effect is relatively poor
In addition, when there is a risk of peeling off the window glass, there are often disputes over whether an activator was used when judging the cause, and it is not easy to distinguish whether the activator has been applied during the painting process

Method used

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  • A kind of activator and preparation method thereof
  • A kind of activator and preparation method thereof
  • A kind of activator and preparation method thereof

Examples

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preparation example Construction

[0055] The present invention also provides a preparation method of the activator described in the above technical scheme, comprising the following steps:

[0056] A) mixing and reacting the aminosilane compound with the silane modifier to obtain the modified aminosilane;

[0057] The aminosilane compound is one or more of monoaminosiloxane and polyaminosiloxane;

[0058] The silane modifier is one or more of monoepoxy glycidyl ether, bisepoxy glycidyl ether and polyepoxy glycidyl ether;

[0059] B) mixing the modified aminosilane with a fluorescent substance, a catalyst and a solvent to obtain an activator.

[0060] In the present invention, the types, dosages and sources of the aminosilane compounds, silane modifiers, modified aminosilanes, fluorescent substances, catalysts and solvents are consistent with the above technical solutions, and will not be repeated here.

[0061] According to the present invention, the aminosilane compound and the silane modifier are mixed and ...

Embodiment 1

[0070] Accurately weigh 34.0g of ethylene glycol diglycidyl ether in a dry three-necked flask, raise the temperature to 30°C, add 36g of aminopropyltrimethoxysilane while stirring, stir evenly after the addition, and react at constant temperature for 1h to obtain the modified amino silane. Add 930g of heptane, 8g of n-butyl titanate and 2g of Clariant fluorescent whitening agent KSN to the obtained modified aminosilane, continue stirring for 0.5h, and discharge to obtain an activator. The obtained activator is divided into airtight containers for use.

[0071] Brush the above activator on the glass surface substrate and the metal paint surface substrate respectively. After the surface is dry, seal the polyurethane sealant on the surface of the activator. After 48 hours, test the bonding effect between the polyurethane sealant and the substrate surface, as shown in the table 1.

[0072] The bonding effect of the gained activator to the sealant glass substrate is as follows: ...

Embodiment 2

[0075] Accurately weigh 40.0g of resorcinol diglycidyl ether in a dry three-necked flask, raise the temperature to 25°C, add 44.4g of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane while stirring, and add Stir evenly after completion, and react at constant temperature for 1 hour to obtain modified aminosilane. Add 911g of heptane, 8g of n-butyl titanate and 1g of Clariant fluorescent whitening agent KSN to the obtained modified aminosilane, continue stirring for 0.5h, and discharge to obtain an activator. The obtained activator is divided into airtight containers for use.

[0076] Brush the above activator on the glass surface substrate and the metal paint surface substrate respectively. After the surface is dry, seal the polyurethane sealant on the surface of the activator. After 48 hours, test the bonding effect between the polyurethane sealant and the substrate surface, as shown in the table 1. The bonding effect of the obtained activator to the sealant paint surface subs...

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Abstract

The invention provides an activator, which comprises: modified amino silane, a fluorescent material, a catalyst and a solvent. The modified amino silane is prepared by reaction of an amino silane compound and a silane modifier. The amino silane compound is one or more of monoamino siloxane and polyaminosiloxane. The silane modifier is one or more of monoepoxy glycidyl ether, diepoxy glycidyl ether and polyepoxy glycidyl ether. The activator provided by the invention not only can improve the caking properties between a glass substrate and a polyurethane adhesive, and furthermore can enhance the bonding effect between a paint surface substrate and a polyurethane adhesive. Moreover, the activator provided by the invention can generate a fluorescent effect on the substrate surface, and is conducive to conveniently and quickly judging whether the activator is brushed.

Description

technical field [0001] The invention relates to the technical field of surface treatment agents, in particular to an activator and a preparation method thereof. Background technique [0002] One-component moisture-curing polyurethane adhesives are widely used in the assembly process of automobile windshields. In order to enhance the bonding effect between the windshield substrate and the polyurethane adhesive, cleaning activators and primers are usually used in the prior art. In the process, first clean the surroundings of the glass and the door and window frame - dip in the cleaning activator to clean the glass - brush the primer - apply the sealant. The sizing process in the above technology needs to be completed in two times, which is more complicated and prone to failure. Poor, prone to glass drop phenomenon. In order to be more convenient to use and improve the bonding effect between the glass substrate and the polyurethane adhesive, the prior art has continuously impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/30C09J5/02
CPCC03C17/30C03C2217/20C09J5/02C09J2400/146
Inventor 何永富李云龙陶小乐方康俊孙辉
Owner HANGZHOU ZHIJIANG NEW MATERIAL CO LTD