High-performance curtain wall weather-proof sealant

Abstract

The invention is applicable to the technical field of curtain wall weather-proof sealant, and provides a high-performance curtain wall weather-proof sealant, which is prepared from the following components in percentage by mass: 45% of hydroxyl-terminated polydimethylsiloxane, 5% of silicone oil, 40% of calcium carbonate, 4.5% of carbon black, 4% of methyltris (methylethylketoxime) silane, 0.8% of vinyltris (methylethylketoxime) silane, 0.6% of multifunctional silane and 0.1% of catalyst. The product obtained by the invention is suitable for bonding and sealing materials such as glass curtain walls, stone curtain walls, aluminum-plastic panels, aluminum veneer curtain walls, building doors and windows, aluminum alloys, glass, ceramics and the like, and has excellent physical properties and low damage to curtain wall system structural members; the curing speed is high, the strength is high, the weather resistance and aging resistance are excellent after complete curing, the good performance is kept in the temperature range of-50 DEG C to + 100 DEG C, and the good cohesiveness and compatibility are achieved for most building materials; the weather resistance, the aging resistance, the ultraviolet radiation resistance, the bonding strength and the like are excellent.

Description

Technical Field

[0001] The invention relates to the technical field of curtain wall weatherproof adhesive, in particular to a high-performance curtain wall weatherproof adhesive. Background Art

[0002] At present, curtain wall weather-resistant adhesive is mainly used for structural bonding of high-end curtain walls, hidden frame or semi-hidden frame glass curtain walls of buildings, and secondary bonding and sealing of structural insulating glass, to ensure the overall stability and durability of the curtain wall system.

[0003] However, silicone weather-resistant adhesive has some shortcomings. Its weather resistance, aging resistance, UV radiation resistance and bonding strength still need to be improved, especially under extreme climatic conditions, which will lead to a decrease in the sealing and stability of the curtain wall system, thereby affecting the overall safety and service life of the building. Summary of the invention

[0004] The object of the present invention is to provide a high-performance curtain wall weather-resistant adhesive to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: The present invention provides a high-performance curtain wall weather-resistant adhesive, and the components of the weather-resistant adhesive are as follows:

[0006] Terminal hydroxyl polydimethylsiloxane, silicone oil, calcium carbonate, carbon black, methyl tributylacetonato silane, vinyl tributylacetonato silane, multifunctional silane, catalyst.

[0007] Preferably, the mass percentages of the components of the weather-resistant adhesive are as follows:

[0008] 45% terminal hydroxyl polydimethylsiloxane, 5% silicone oil, 40% calcium carbonate, 4.5% carbon black, 4% methyl tributylacetonato silane, 0.8% vinyl tributylacetonato silane, 0.6% multifunctional silane, and 0.1% catalyst.

[0009] Preferably, the catalyst is one or more of dibutyltin dilaurate or di-n-octyltin dilaurate.

[0010] Preferably, the multifunctional silane is one or more of 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropyloxy)propyltrimethoxysilane.

[0011] Preferably, the storage temperature of the weather-resistant adhesive is ≤27°C.

[0012] The present invention has at least the following beneficial effects:

[0013] The high-performance curtain wall weatherproof adhesive provided by the present invention is suitable for bonding and sealing of glass curtain walls, stone curtain walls, aluminum-plastic panels, aluminum single-plate curtain walls, building doors and windows, aluminum alloys, glass, ceramics and other materials, has excellent physical properties, is neutral, and has low damage to curtain wall system structural parts; has a fast curing speed and high strength, has excellent weather resistance and aging resistance after being fully cured, maintains good performance in the temperature range of -50°C to +100°C, has good adhesion and compatibility with most building materials; has excellent weather resistance, aging resistance, ultraviolet radiation resistance and bonding strength and other performance characteristics, and can meet the high performance requirements of weatherproof adhesives in occasions such as high-end curtain walls, building hidden frame or semi-hidden frame glass curtain walls and the like. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Example 1

[0016] A high-performance curtain wall weather-resistant adhesive, the components and mass percentages of which are as follows:

[0017] 45% terminal hydroxyl polydimethylsiloxane, 5% silicone oil, 40% calcium carbonate, 4.5% carbon black, 4% methyl tributylacetonato silane, 0.8% vinyl tributylacetonato silane, 0.6% multifunctional silane, and 0.1% catalyst.

[0018] The catalyst is dibutyltin dilaurate; and the multifunctional silane is 3-aminopropyltriethoxysilane.

[0019] Example 2

[0020] A high-performance curtain wall weather-resistant adhesive, the components and mass percentages of which are as follows:

[0021] 45% terminal hydroxyl polydimethylsiloxane, 5% silicone oil, 40% calcium carbonate, 4.5% carbon black, 4% methyl tributylacetonato silane, 0.8% vinyl tributylacetonato silane, 0.6% multifunctional silane, and 0.1% catalyst.

[0022] The catalyst is di-n-octyltin dilaurate; the multifunctional silane is 3-(2,3-epoxypropoxy)propyltrimethoxysilane.

[0023] Example 3

[0024] A high-performance curtain wall weather-resistant adhesive, the components and mass percentages of which are as follows:

[0025] 45% terminal hydroxyl polydimethylsiloxane, 5% silicone oil, 40% calcium carbonate, 4.5% carbon black, 4% methyl tributylacetonato silane, 0.8% vinyl tributylacetonato silane, 0.6% multifunctional silane, and 0.1% catalyst.

[0026] The catalyst is dibutyltin dilaurate; the multifunctional silane is 3-(2,3-epoxypropoxy)propyltrimethoxysilane.

[0027] A series of related tests were carried out on the products prepared in the above Examples 1-3, and the results are shown in Tables 1 and 2 below:

[0028] Table 1 Test items and test basis

[0029]

[0030]

[0031] Table 2 Test results

[0032]

[0033]

[0034] The product prepared by the present invention is suitable for bonding and sealing of glass curtain walls, stone curtain walls, aluminum-plastic panels, aluminum single-plate curtain walls, building doors and windows, aluminum alloys, glass, ceramics and other materials, has excellent physical properties, is neutral, and has low damage to curtain wall system structural parts; has a fast curing speed and high strength, has excellent weather resistance and aging resistance after being fully cured, maintains good performance in the temperature range of -50°C to +100°C, and has good adhesion and compatibility with most building materials.

[0035] The present invention introduces a specific proportion of terminal hydroxyl polydimethylsiloxane, silicone oil, calcium carbonate, carbon black, methyl tributylidene oxime silane, vinyl tributylidene oxime silane, multifunctional silane and catalyst components into the formula of the weather-resistant adhesive. These components, under the synergistic effect, give the weather-resistant adhesive excellent weather resistance, aging resistance, ultraviolet radiation resistance and bonding strength.

[0036] Among them, end-hydroxy polydimethylsiloxane, as the main matrix material of weather-resistant adhesive, has excellent weather resistance and aging resistance; silicone oil can improve the fluidity and processing performance of weather-resistant adhesive; calcium carbonate as a filler can improve the hardness and wear resistance of weather-resistant adhesive; carbon black can enhance the resistance of weather-resistant adhesive to ultraviolet radiation; methyl trisbutyl ketoxime silane and vinyl trisbutyl ketoxime silane as cross-linking agents can promote the cross-linking reaction of weather-resistant adhesive and improve the strength and stability of weather-resistant adhesive; multifunctional silane can give weather-resistant adhesive more functionality, such as enhancing bonding strength and improving water resistance; and catalysts can accelerate the curing reaction of weather-resistant adhesive and improve production efficiency.

[0037] In summary, the high-performance curtain wall weather-resistant adhesive provided by the present invention has excellent performance characteristics such as weather resistance, aging resistance, ultraviolet radiation resistance and bonding strength, and can meet the high performance requirements of weather-resistant adhesive in occasions such as high-end curtain walls, hidden frame or semi-hidden frame glass curtain walls of buildings.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance curtain wall weather-resistant adhesive, characterized in that: The components of the weather-resistant adhesive are as follows: Terminal hydroxyl polydimethylsiloxane, silicone oil, calcium carbonate, carbon black, methyl tributylacetonato silane, vinyl tributylacetonato silane, multifunctional silane, catalyst.

2. A high-performance curtain wall weather-resistant adhesive according to claim 1, characterized in that: The mass percentages of the components of the weather-resistant adhesive are as follows: 45% terminal hydroxyl polydimethylsiloxane, 5% silicone oil, 40% calcium carbonate, 4.5% carbon black, 4% methyl tributylacetonato silane, 0.8% vinyl tributylacetonato silane, 0.6% multifunctional silane, and 0.1% catalyst.

3. The high-performance curtain wall weather-resistant adhesive according to claim 1, characterized in that: The catalyst is one or more of dibutyltin dilaurate or di-n-octyltin dilaurate.

4. The high-performance curtain wall weather-resistant adhesive according to claim 1, characterized in that: The multifunctional silane is one or more of 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropyloxy)propyltrimethoxysilane.

5. The high-performance curtain wall weather-resistant adhesive according to claim 1, characterized in that: The storage temperature of the weather-resistant adhesive is ≤27°C.

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