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Bi-component quick-curing organosilicon structural adhesive and preparation method thereof

A fast-curing, silicone technology, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problem of insufficient bonding strength and bonding versatility, unable to meet the application requirements of the home appliance industry, and unable to achieve fast Positioning and other issues, to achieve the effect of good high and low temperature resistance, good bonding performance, and high bonding strength

Inactive Publication Date: 2020-04-24
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many room-temperature-curing two-component silicone adhesives on the market, they are all low-viscosity potting adhesives with slow curing speeds. When used for bonding workpieces in the home appliance industry, fast positioning cannot be achieved, and the bonding strength and The versatility of bonding is not enough, and it still cannot meet the application requirements of the home appliance industry

Method used

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  • Bi-component quick-curing organosilicon structural adhesive and preparation method thereof
  • Bi-component quick-curing organosilicon structural adhesive and preparation method thereof
  • Bi-component quick-curing organosilicon structural adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A two-component fast-curing silicone structural adhesive, in which the raw material composition of component A and component B is shown in the following table:

[0066] Table 1 The raw material composition of component A and component B in the two-component fast-curing silicone structural adhesive

[0067]

[0068] The preparation method of the above-mentioned two-component fast-curing silicone structural adhesive comprises the following steps:

[0069] 1) raw material pretreatment: drying the nano-calcium carbonate treated with stearic acid;

[0070] 2) Preparation of component A: Add the nano-calcium carbonate treated with hydroxyl-terminated polydimethylsiloxane and stearic acid according to the proportion to the reaction kettle, vacuumize and mix evenly at 130°C, and add oil after cooling to room temperature Water-infused silicone emulsion, sealed and stored;

[0071]3) Preparation of component B: add stearic acid-treated nano-calcium carbonate, hexamethyldisil...

Embodiment 2

[0074] A two-component fast-curing silicone structural adhesive, in which the raw material composition of component A and component B is shown in the following table:

[0075] Table 2 Raw material composition of component A and component B in the two-component fast-curing silicone structural adhesive

[0076]

[0077]

[0078] The preparation method of the above-mentioned two-component fast-curing silicone structural adhesive comprises the following steps:

[0079] 1) raw material pretreatment: drying the nano-calcium carbonate treated with stearic acid;

[0080] 2) Preparation of component A: Add the nano-calcium carbonate treated with hydroxyl-terminated polydimethylsiloxane and stearic acid according to the proportion to the reaction kettle, vacuumize and mix evenly at 130°C, and add oil after cooling to room temperature Water-infused silicone emulsion, sealed and stored;

[0081] 3) Preparation of component B: Add stearic acid-treated nano-calcium carbonate, hexame...

Embodiment 3

[0084] A two-component fast-curing silicone structural adhesive, in which the raw material composition of component A and component B is shown in the following table:

[0085] Table 3 Raw material composition of component A and component B in the two-component fast-curing silicone structural adhesive

[0086]

[0087]

[0088] The preparation method of the above-mentioned two-component fast-curing silicone structural adhesive comprises the following steps:

[0089] 1) raw material pretreatment: drying the nano-calcium carbonate treated with stearic acid;

[0090] 2) Preparation of component A: Add the nano-calcium carbonate treated with hydroxyl-terminated polydimethylsiloxane and stearic acid according to the proportion to the reaction kettle, vacuumize and mix evenly at 130°C, and add oil after cooling to room temperature Water-infused silicone emulsion, sealed and stored;

[0091] 3) Preparation of component B: Add stearic acid-treated nano-calcium carbonate, hexame...

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Abstract

The invention discloses a bi-component quick-curing organosilicon structural adhesive and a preparation method thereof. The bi-component quick-curing organosilicon structural adhesive is prepared froma component A and a component B, wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, a reinforcing filler, a plasticizer and a curing accelerator, and the component B comprises alkoxy-terminated polydimethylsiloxane, a reinforcing filler, a filler activating treatment agent, a plasticizer, a cross-linking agent, a coupling agent, a catalyst and a pigment. The preparation method of the bi-component quick-curing organosilicon structural adhesive is very simple, and the raw materials in the component A and the component B are uniformly mixed according to the proportion and then are respectively packaged to obtain the bi-component quick-curing organosilicon structural adhesive. The bi-component quick-curing organosilicon structural adhesive can be fast cured at room temperature, and is high in bonding strength, excellent in weather resistance, good in high and low temperature resistance, wide in application range, safe and environmentally friendly.

Description

technical field [0001] The invention relates to a two-component fast-curing silicone structural adhesive and a preparation method thereof, belonging to the technical field of silicone adhesives. Background technique [0002] At present, most of the workpieces in the household appliance industry are bonded by first coating the primer and then applying the one-component silicone adhesive. The curing time is long, and the workpiece is often positioned with a fixture during the curing process. Production efficiency is low, severely constraining product lines that are in high demand. Although there are many room-temperature-curing two-component silicone adhesives on the market, they are all low-viscosity potting adhesives with slow curing speeds. When used for bonding workpieces in the home appliance industry, fast positioning cannot be achieved, and the bonding strength and The versatility of bonding is not enough, and it still cannot meet the application requirements of the ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/04
CPCC09J183/04C09J11/04C08K2003/265C08K2201/011C08K2003/3045C08L2205/025C08L2205/035C08L83/04C08K13/06C08K9/04C08K3/26C08K13/02C08K3/36C08K3/30
Inventor 邓伟伟李吉明余晓桃王泉
Owner GUANGZHOU MECHANICAL ENG RES INST