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A kind of activator and preparation method thereof

A technology of activator and solvent, which is applied in the field of activator and its preparation, can solve problems such as poor bonding effect, achieve the effect of enhancing bonding effect and improving bonding property

Active Publication Date: 2018-08-17
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

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

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preparation example Construction

[0044] The present invention also provides the preparation method of above-mentioned activator, comprises the following steps:

[0045] A) mixing and reacting the aminosilane compound with the silane modifier to obtain the modified aminosilane;

[0046] The silane modifier is one or more of monoepoxy glycidyl ether, bisepoxy glycidyl ether and polyepoxy glycidyl ether;

[0047] B) mixing the modified aminosilane with a solvent to obtain an activator.

[0048] In the present invention, the aminosilane compound and the silane modifier are mixed and reacted to obtain the modified aminosilane.

[0049] The aminosilane compound is preferably one or more of monoaminosiloxane and polyaminosiloxane. In some embodiments of the present invention, the aminosilane compound can be aminopropyltrimethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, N-(n- One or more of butyl)-γ-aminopropyltrimethoxysilane.

[0050] The silane modifier is preferably one or more of monoepoxy glycid...

Embodiment 1

[0064] Accurately weigh 34.8g 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 1 hour to obtain modified amino silane. Add 930 g of heptane to the obtained modified aminosilane, continue stirring for 0.5 h, and discharge to obtain an activator. The mass percent of the modified aminosilane in the obtained activator was 7.08%. The obtained activator is divided into airtight containers for use.

[0065] 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.

[0066] The bonding effect of the obtained activator to the base material of the sealant...

Embodiment 2

[0068] Accurately weigh 44.4g of resorcinol diglycidyl ether in a dry three-necked flask, heat up to 30°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 911 g of heptane to the obtained modified aminosilane, continue stirring for 0.5 h, and discharge to obtain an activator. The mass percentage of the modified aminosilane in the obtained activator was 8.88%. The obtained activator is divided into airtight containers for use.

[0069] Brush the above-mentioned activator on the glass surface substrate and the metal paint surface substrate respectively. After the surface is dry, seal the polyurethane sealant (purchased from Hangzhou Zhijiang Organic Silicon Chemical Co., Ltd.) on the surface of the activator, and test the polyurethane sealant after 48 hours. The bonding effect between the glue and the surface of the substrate is sho...

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Abstract

The invention provides an activating agent which is prepared from modified amino silane and a solvent. The modified amino silane is prepared from an amino silane compound and a silane modifier through reaction, wherein the silane modifier is one or more of monoepoxy glycidyl ether, diepoxy glycidyl ether and polyepoxy glycidyl ether. By the adoption of the activating agent, not only can the bonding between a glass base material and a polyurethane adhesive be improved, but also the bonding effect between a paint surface base material and the polyurethane adhesive can be enhanced.

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
CPCC03C17/006C03C17/30C03C2217/29C03C2217/90C09J5/02C09J2301/50C09J2400/146C09J2475/00
Inventor 何永富李云龙陶小乐孟君伟孙辉
Owner HANGZHOU ZHIJIANG NEW MATERIAL CO LTD