Weather-proof bi-component silane modified polyether sealant and preparation method thereof

A silane-modified polyether, two-component technology, applied in the field of sealants, can solve problems such as intolerance to extraction, easy volatilization, and easy migration, and achieve the effects of good extraction resistance, low hygroscopicity, and simple composition

Inactive Publication Date: 2018-11-27
广西德本仕密封材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above light stabilizers are commonly used low-molecular-weight stabilizers, which inevitably have the disadvantages of being volatile, easy to migrate, and not resistant to extraction, especially low-molecular-weight liquid stabilizers, which diffuse to the bonding interface after precipitation and even penetrate into the substrate.

Method used

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  • Weather-proof bi-component silane modified polyether sealant and preparation method thereof
  • Weather-proof bi-component silane modified polyether sealant and preparation method thereof
  • Weather-proof bi-component silane modified polyether sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The two-component silane-modified polyether sealant in this example is formed by mixing component A and component B at a mass ratio of 10:1, wherein component A and component B are prepared from the following mass percentage raw materials:

[0034]

[0035] The preparation method of sealant, comprises the steps:

[0036] (1) Preparation of component A: Weigh the raw materials according to the above proportions, add silane-modified polyether resin, plasticizer, nano-calcium carbonate, titanium dioxide, hollow resin and composite light stabilizer into the high-speed disperser, and mix the materials Raise the temperature to 85°C, and stir for 2.5 hours under a vacuum of 0.090±0.005MPa to obtain the mixed material; when the temperature of the mixed material is lowered to below 45°C, add light-curable resin and coupling agent, stir for 30 minutes, cool down and discharge the material for packaging, and obtain Group A product;

[0037](2) Preparation of component B: Weigh...

Embodiment 2

[0040] The two-component silane-modified polyether sealant in this example is formed by mixing component A and component B at a mass ratio of 10:1, wherein component A and component B are prepared from the following mass percentage raw materials:

[0041]

[0042]

[0043] The preparation method of sealant, comprises the steps:

[0044] (1) Preparation of component A: Weigh the raw materials according to the above proportions, add silane-modified polyether resin, plasticizer, nano-calcium carbonate, titanium dioxide, hollow resin and composite light stabilizer into the high-speed disperser, and mix the materials Raise the temperature to 90°C, and stir for 2 hours under a vacuum of 0.090±0.005MPa to obtain the mixed material; when the temperature of the mixed material is lowered to below 45°C, add light-curable resin and coupling agent, stir for 15 minutes, cool down and discharge the material for packaging, and obtain component A product;

[0045] (2) Preparation of com...

Embodiment 3

[0048] The two-component silane-modified polyether sealant in this example is formed by mixing component A and component B at a mass ratio of 10:1, wherein component A and component B are prepared from the following mass percentage raw materials:

[0049]

[0050]

[0051] The preparation method of sealant, comprises the steps:

[0052] (1) Preparation of component A: Weigh the raw materials according to the above proportions, add silane-modified polyether resin, plasticizer, nano-calcium carbonate, titanium dioxide, hollow resin and composite light stabilizer into the high-speed disperser, and mix the materials Raise the temperature to 100°C, and stir for 1.5 hours under a vacuum of 0.090±0.005MPa to obtain the mixed material; when the temperature of the mixed material is lowered to below 45°C, add light-curable resin and coupling agent, stir for 30 minutes, cool down and discharge the material for packaging, and obtain Group A product;

[0053] (2) Preparation of comp...

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Abstract

The invention discloses a weather-proof bi-component silane modified polyether sealant and a preparation method thereof. The sealant is formed by a component A and a component B in a mass ratio of 10:1 through mixing, wherein the component A comprises the following raw materials by mass percent: 20-35% of silane modified polyether resin, 10-25% of a plasticizer, 40-60% of nano calcium carbonate,1-3% of titanium dioxide, 1-3% of hollow resin, 0.5-1.5% of a compound light stabilizer, 0.5-1.5% of light-cured resin and 0.5-1.5% of a coupling agent; and the component B comprises the following rawmaterials in mass percent: 35-65% of nano calcium carbonate, 30-60% of a plasticizer and 1-10% of a catalyst. The prepared sealant has excellent hydrolytic resistance, elastic recovery ratio, weather-proof property, mechanical property, quick solidification property and low modulus, and can be widely applied to the adhesion and sealing of various building materials.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a weather-resistant two-component silane-modified polyether sealant and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, the atmospheric ozone layer has been severely damaged by the widely used chlorofluorocarbons, which makes the amount of ultraviolet radiation directly irradiated on the earth's surface increasing day by day, and the increase and short-wave of ultraviolet radiation will not only affect Human skin will cause harm, and it will also cause damage to the internal structure of the molecule, break the molecular chain, and destroy the polymer material. The proportion of glass curtain walls in modern high-rise buildings is increasing, and the refraction and reflection effects of glass curtain walls intensify the destructive effect of ultraviolet light aging. Automotive, construction and other fields put forward ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/04C09J11/06C09J11/08
CPCC09J4/06C09J11/04C09J11/06C09J11/08
Inventor 陈霞朱勇黄本卫方贵坜陆初典李仁才
Owner 广西德本仕密封材料有限公司
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