CN111057517A - Bi-component fast curing type organic silicon structural adhesive and preparation method thereof - Google Patents
Bi-component fast curing type organic silicon structural adhesive and preparation method thereof Download PDFInfo
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- CN111057517A CN111057517A CN201911404590.3A CN201911404590A CN111057517A CN 111057517 A CN111057517 A CN 111057517A CN 201911404590 A CN201911404590 A CN 201911404590A CN 111057517 A CN111057517 A CN 111057517A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a bi-component fast curing type organic silicon structural adhesive and a preparation method thereof. The two-component fast curing type organic silicon structural adhesive consists of a component A and a component B, wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, reinforcing filler, plasticizer and curing accelerator, and the component B comprises alkoxy-terminated polydimethylsiloxane, reinforcing filler, filler activating treatment agent, plasticizer, cross-linking agent, coupling agent, catalyst and pigment. The preparation method of the bi-component fast curing type organic silicon 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. The bi-component fast curing type organic silicon structural adhesive can be fast cured at room temperature, and has the advantages of high bonding strength, excellent weather resistance, good high and low temperature resistance, wide application range, safety and environmental protection.
Description
Technical Field
The invention relates to a bi-component fast curing type organic silicon structural adhesive and a preparation method thereof, belonging to the technical field of organic silicon adhesives.
Background
At present, most of workpieces in the household appliance industry are bonded in a mode of firstly coating a primer and then coating a single-component organic silicon adhesive, the curing time is long, a clamp is often used for positioning the workpieces in the curing process, the production efficiency is low, and the product line with vigorous demand is severely restricted. Although a plurality of room temperature curing bi-component organic silicon adhesives appear on the market, the room temperature curing bi-component organic silicon adhesives are low in viscosity pouring sealants, slow in curing speed, incapable of realizing rapid positioning when used for workpiece bonding in the household appliance industry, and insufficient in bonding strength and bonding universality, and still incapable of meeting the application requirements of the household appliance industry. Moreover, products in the household appliance industry are beautiful and smooth in appearance, most of workpiece materials are required to be self-cleaning, the surface energy is low, and the adhesion is difficult.
Therefore, it is necessary to develop a two-component silicone adhesive which is cured at room temperature, has high curing speed, high bonding strength and wide application range.
Disclosure of Invention
The invention aims to provide a bi-component fast curing type organic silicon structural adhesive and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
a bi-component fast curing type organic silicon structural adhesive is composed of a component A and a component B:
the component A comprises the following raw materials in parts by mass:
hydroxyl-terminated polydimethylsiloxane: 40-100 parts;
reinforcing filler: 20-120 parts;
plasticizer: 0-30 parts of a solvent;
curing accelerator: 0.1-3 parts;
the component B comprises the following raw materials in parts by mass:
alkoxy-terminated polydimethylsiloxane: 40-100 parts;
reinforcing filler: 20-120 parts;
filler activating treatment agent: 5-50 parts;
plasticizer: 20-100 parts of a solvent;
a crosslinking agent: 5-20 parts of a solvent;
coupling agent: 3-15 parts;
catalyst: 0.01-2 parts;
pigment: 0.1-20 parts.
Preferably, the two-component quick-curing type organic silicon structural adhesive consists of a component A and a component B:
the component A comprises the following raw materials in parts by mass:
hydroxyl-terminated polydimethylsiloxane: 80-100 parts of a solvent;
reinforcing filler: 50-80 parts;
plasticizer: 0-10 parts;
curing accelerator: 1-3 parts;
the component B comprises the following raw materials in parts by mass:
alkoxy-terminated polydimethylsiloxane: 40-60 parts;
reinforcing filler: 40-60 parts;
filler activating treatment agent: 5-20 parts of a solvent;
plasticizer: 20-40 parts of a solvent;
a crosslinking agent: 10-20 parts;
coupling agent: 5-10 parts;
catalyst: 0.1-0.5 part;
pigment: 3-7 parts.
Preferably, the viscosity of the hydroxyl-terminated polydimethylsiloxane is 1000-50000 cs.
More preferably, the viscosity of the hydroxyl-terminated polydimethylsiloxane is 5000-20000 cs.
Preferably, the reinforcing filler is at least one of talcum powder, heavy calcium carbonate, light calcium carbonate, silica micropowder, calcium oxide, zinc oxide, boron nitride, aluminum oxide, calcium sulfate, titanium dioxide, carbon black and fumed silica.
More preferably, the reinforcing filler is at least one of light calcium carbonate, silicon micropowder and barium sulfate, and the average particle size is 1-5 μm.
Preferably, the plasticizer is at least one of dimethyl silicone oil, phenyl silicone oil and straight-chain white oil.
Preferably, the viscosity of the dimethyl silicone oil is 10-1000 cs.
More preferably, the viscosity of the simethicone is 50 to 500 cs.
Preferably, the curing accelerator is a water-in-oil silicone emulsion.
Preferably, the alkoxy-terminated polydimethylsiloxane is at least one of trimethoxy-terminated polydimethylsiloxane, dimethoxy-terminated polydimethylsiloxane, monomethoxy-terminated polydimethylsiloxane, triethoxy-terminated polydimethylsiloxane, diethoxy-terminated polydimethylsiloxane and monoethoxy-terminated polydimethylsiloxane.
Preferably, the viscosity of the alkoxy-terminated polydimethylsiloxane is 100 to 100000 cs.
More preferably, the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000-40000 cs.
Preferably, the filler activating treatment agent is at least one of hexamethyldisilazane, hexamethyldisiloxane, octamethylcyclotetrasiloxane, methyltrichlorosilane, vinyltrichlorosilane, and dichlorodimethylsilane.
Further preferably, the filler activation treatment agent is at least one of hexamethyldisilazane and hexamethyldisiloxane.
Preferably, the crosslinking agent is at least one of tetramethoxysilane, tetraethoxysilane, poly tetraethoxysilane, tetrapropoxysilane, methyltrimethoxysilane, methyltriethoxysilane, polymethyltriethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, dimethyldiethoxysilane, and methylvinyldimethoxysilane.
Preferably, the coupling agent is at least one of 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, bis- (gamma-triethoxysilylpropyl) tetrasulfide, phenyltrimethoxysilane, phenyltriethoxysilane, 3- (2, 3-glycidoxy) propyltrimethoxysilane, 3- (methacryloyloxy) propyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, aniline methyltriethoxysilane and 3-isocyanatopropyltrimethoxysilane.
Preferably, the catalyst is at least one of an organic tin catalyst, an organic titanium catalyst and an organic bismuth catalyst.
Further preferably, the catalyst is at least one of dibutyltin dilaurate, organotin chelate, tetrabutyl titanate and titanate chelate.
Preferably, the pigment is at least one of acetylene black, pigment carbon black, iron oxide black and iron oxide red.
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the reinforcing filler;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane, reinforcing filler and plasticizer into a reaction kettle according to a ratio, vacuumizing at 100-150 ℃, uniformly mixing, cooling to room temperature, adding a curing accelerator, and sealing for storage;
3) preparation of the component B: adding the reinforcing filler, the filler activating treatment agent and the plasticizer into a reaction kettle, vacuumizing and dehydrating at 100-150 ℃, cooling to room temperature, adding the alkoxy-terminated polydimethylsiloxane, the crosslinking agent, the coupling agent, the catalyst and the pigment, uniformly mixing under a vacuumizing condition, and sealing and storing.
The invention has the beneficial effects that: the bi-component fast curing type organic silicon structural adhesive can be fast cured at room temperature, and has the advantages of high bonding strength, excellent weather resistance, good high and low temperature resistance, wide application range, safety and environmental protection.
Specifically, the method comprises the following steps:
1) according to the invention, the hydroxyl-terminated polydimethylsiloxane and the alkoxy-terminated polydimethylsiloxane are compounded, so that the curing speed is improved, and the method is suitable for quick positioning and bonding of workpieces in the household appliance industry;
2) the bi-component fast curing type organic silicon structural adhesive has good bonding performance, and is suitable for bonding powder spraying parts and other low-surface-energy materials in the household appliance industry;
3) the bi-component fast curing type organic silicon structural adhesive is safe and environment-friendly, and does not cause environmental pollution.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples.
Example 1:
the two-component quick-curing type organic silicon structural adhesive comprises the following raw materials in percentage by weight:
TABLE 1 composition of raw materials of A-component and B-component in two-component fast curing type organosilicon structural adhesive
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the stearic acid treated nano calcium carbonate;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane and stearic acid-treated nano calcium carbonate into a reaction kettle according to a ratio, vacuumizing at 130 ℃, mixing uniformly, cooling to room temperature, adding water-in-oil type organic silicon emulsion, and sealing for storage;
3) preparation of the component B: adding stearic acid-treated nano calcium carbonate, hexamethyldisilazane and dimethyl silicone oil into a reaction kettle, vacuumizing at 130 ℃ until the vacuum degree reaches-0.9 MPa, stopping vacuumizing, keeping-0.9 MPa negative pressure, stirring for 1h, starting a vacuum pump, vacuumizing while stirring for reacting for 1h at the constant temperature of 130 ℃, stopping vacuumizing, cooling to room temperature, adding triethoxy-terminated polydimethylsiloxane, tetraethoxysilane, methyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, dibutyltin dilaurate and pigment carbon black, uniformly mixing under a vacuumizing condition, and sealing for storage;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
Example 2:
the two-component quick-curing type organic silicon structural adhesive comprises the following raw materials in percentage by weight:
TABLE 2 raw material composition table of A component and B component in two-component fast curing type silicone structural adhesive
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the stearic acid treated nano calcium carbonate;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane and stearic acid-treated nano calcium carbonate into a reaction kettle according to a ratio, vacuumizing at 130 ℃, mixing uniformly, cooling to room temperature, adding water-in-oil type organic silicon emulsion, and sealing for storage;
3) preparation of the component B: adding stearic acid-treated nano calcium carbonate, hexamethyldisilazane and dimethyl silicone oil into a reaction kettle, vacuumizing at 140 ℃ until the vacuum degree reaches-0.9 MPa, stopping vacuumizing, keeping negative pressure of-0.9 MPa, stirring for 1h, starting a vacuum pump, vacuumizing while stirring for reacting for 1h at 140 ℃ constantly, stopping vacuumizing, cooling to room temperature, adding trimethoxy end-capped polydimethylsiloxane, poly tetraethoxysilane, methyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, titanate complex and pigment carbon black, uniformly mixing under a vacuumizing condition, and sealing for storage;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
Example 3:
the two-component quick-curing type organic silicon structural adhesive comprises the following raw materials in percentage by weight:
TABLE 3 raw material composition table of A-component and B-component in two-component fast curing type silicone structural adhesive
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the stearic acid treated nano calcium carbonate;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane and stearic acid-treated nano calcium carbonate into a reaction kettle according to a ratio, vacuumizing at 130 ℃, mixing uniformly, cooling to room temperature, adding water-in-oil type organic silicon emulsion, and sealing for storage;
3) preparation of the component B: adding stearic acid-treated nano calcium carbonate, hexamethyldisilazane and dimethyl silicone oil into a reaction kettle, vacuumizing at 150 ℃ until the vacuum degree reaches-0.9 MPa, stopping vacuumizing, keeping negative pressure of-0.9 MPa, stirring for 1h, starting a vacuum pump, vacuumizing while stirring for reacting for 1h with constant temperature of 150 ℃, stopping vacuumizing, cooling to room temperature, adding triethoxy-terminated polydimethylsiloxane, tetraethoxysilane, polymethyltriethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, organic tin chelate and pigment carbon black, uniformly mixing under a vacuumizing condition, and sealing for storage;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
Example 4:
the two-component quick-curing type organic silicon structural adhesive comprises the following raw materials in percentage by weight:
TABLE 4 raw material composition table of A-component and B-component in two-component fast curing type silicone structural adhesive
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the silicon micropowder and the gas-phase silicon dioxide;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane, silicon micropowder and fumed silica into a reaction kettle according to a ratio, vacuumizing at 130 ℃, mixing uniformly, cooling to room temperature, adding a water-in-oil type organic silicon emulsion, and sealing for storage;
3) preparation of the component B: adding barium sulfate, hexamethyldisiloxane and dimethyl silicone oil into a reaction kettle, vacuumizing at 140 ℃ until the vacuum degree reaches-0.9 MPa, stopping vacuumizing, keeping negative pressure at-0.9 MPa and stirring for 1h, starting a vacuum pump, vacuumizing while stirring for reacting for 1h at 140 ℃ constantly, stopping vacuumizing and cooling to room temperature, adding triethoxy end-capped polydimethylsiloxane, tetraethoxysilane, polymethyltriethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, an organic titanium chelate and pigment carbon black, uniformly mixing under a vacuumizing condition, and sealing and storing;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
Example 5:
the two-component quick-curing type organic silicon structural adhesive comprises the following raw materials in percentage by weight:
TABLE 5 raw material composition table of A-component and B-component in two-component fast curing type silicone structural adhesive
The preparation method of the double-component fast curing type organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the silicon micropowder and the gas-phase silicon dioxide;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane, silicon micropowder and fumed silica into a reaction kettle according to a ratio, vacuumizing at 130 ℃, mixing uniformly, cooling to room temperature, adding a water-in-oil type organic silicon emulsion, and sealing for storage;
3) preparation of the component B: adding barium sulfate, hexamethyldisiloxane and dimethyl silicone oil into a reaction kettle, vacuumizing at 140 ℃ until the vacuum degree reaches-0.9 MPa, stopping vacuumizing, keeping negative pressure at-0.9 MPa and stirring for 1h, starting a vacuum pump, vacuumizing while stirring for reacting for 1h at 140 ℃, stopping vacuumizing and cooling to room temperature, adding triethoxy-terminated polydimethylsiloxane, tetramethoxy silane, methyl triethoxy silane, aniline methyl triethoxy silane, 3-isocyanate propyl triethoxy silane, organic tin chelate and pigment carbon black, uniformly mixing under a vacuumizing condition, and sealing for storage;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
Comparative example:
the two-component organic silicon structural adhesive comprises the following raw materials in parts by weight:
TABLE 6 raw material composition of A-component and B-component in two-component organic silicon structural adhesive
The preparation method of the bi-component organic silicon structural adhesive comprises the following steps:
1) pretreatment of raw materials: drying the stearic acid treated nano calcium carbonate;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane and stearic acid-treated nano calcium carbonate into a reaction kettle according to a ratio, vacuumizing at 130 ℃, uniformly mixing, and sealing for storage;
3) preparation of the component B: adding stearic acid-treated nano calcium carbonate and dimethyl silicone oil into a reaction kettle, stirring for 1h under the condition of vacuumizing at 130 ℃, stirring and cooling to room temperature under the condition of vacuumizing, adding methyl trimethoxy silane, N- (2-aminoethyl) -3-aminopropyl trimethoxy silane, 3-aminopropyl triethoxy silane, dibutyltin dilaurate and pigment carbon black, uniformly mixing under the condition of vacuumizing, and sealing and storing;
4) the sizing is carried out: mixing the component A and the component B according to the mass ratio of 1: 1.
And (3) performance testing:
the performance of the silicone structural adhesives of examples 1-5 and comparative example was tested, and the test results are shown in the following table:
table 7 silicone structural adhesive performance test results
Note:
surface drying time: GB/T13477.5-2002;
shear strength: GB/T528-2009;
vertical tension: adhering a workpiece on a glass plate, applying 90-degree vertical tension by using a tension meter or other tension equipment, and measuring the minimum force required to be applied for pulling the workpiece apart;
tensile strength: GB/T528-2009;
elongation at break: GB/T528-2009;
hardness: GB/T531.1-2008.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A bi-component fast curing type organic silicon structural adhesive is composed of a component A and a component B, and is characterized in that:
the component A comprises the following raw materials in parts by mass:
hydroxyl-terminated polydimethylsiloxane: 40-100 parts;
reinforcing filler: 20-120 parts;
plasticizer: 0-30 parts of a solvent;
curing accelerator: 0.1-3 parts;
the component B comprises the following raw materials in parts by mass:
alkoxy-terminated polydimethylsiloxane: 40-100 parts;
reinforcing filler: 20-120 parts;
filler activating treatment agent: 5-50 parts;
plasticizer: 20-100 parts of a solvent;
a crosslinking agent: 5-20 parts of a solvent;
coupling agent: 3-15 parts;
catalyst: 0.01-2 parts;
pigment: 0.1-20 parts.
2. The two-component fast-curing silicone structural adhesive of claim 1, wherein: the viscosity of the hydroxyl-terminated polydimethylsiloxane is 1000-50000 cs.
3. The two-component fast-curing silicone structural adhesive of claim 1, wherein: the reinforcing filler is at least one of talcum powder, heavy calcium carbonate, light calcium carbonate, silica micropowder, calcium oxide, zinc oxide, boron nitride, alumina, calcium sulfate, titanium dioxide, carbon black and fumed silica.
4. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the plasticizer is at least one of dimethyl silicone oil, phenyl silicone oil and straight-chain white oil.
5. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the curing accelerator is water-in-oil type organic silicon emulsion.
6. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the alkoxy-terminated polydimethylsiloxane is at least one of trimethoxy-terminated polydimethylsiloxane, dimethoxy-terminated polydimethylsiloxane, monomethoxy-terminated polydimethylsiloxane, triethoxy-terminated polydimethylsiloxane, diethoxy-terminated polydimethylsiloxane and monoethoxy-terminated polydimethylsiloxane.
7. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the filler activating treatment agent is at least one of hexamethyldisilazane, hexamethyldisiloxane, octamethylcyclotetrasiloxane, methyltrichlorosilane, vinyltrichlorosilane and dichlorodimethylsilane.
8. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the cross-linking agent is at least one of tetramethoxysilane, tetraethoxysilane, poly tetraethoxysilane, tetrapropoxysilane, methyltrimethoxysilane, methyltriethoxysilane, polymethyltriethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, dimethyldiethoxysilane and methylvinyldimethoxysilane.
9. The two-component fast curing silicone structural adhesive according to any one of claims 1 to 3, characterized in that: the coupling agent is at least one of 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, bis- (gamma-triethoxysilylpropyl) tetrasulfide, phenyltrimethoxysilane, phenyltriethoxysilane, 3- (2, 3-glycidoxy) propyltrimethoxysilane, 3- (methacryloyloxy) propyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, aniline methyl triethoxysilane and 3-isocyanatopropyltrimethoxysilane; the catalyst is at least one of an organic tin catalyst, an organic titanium catalyst and an organic bismuth catalyst.
10. The preparation method of the two-component fast curing type organic silicon structural adhesive as claimed in any one of claims 1 to 9, is characterized in that: the method comprises the following steps:
1) pretreatment of raw materials: drying the reinforcing filler;
2) preparation of component A: adding hydroxyl-terminated polydimethylsiloxane, reinforcing filler and plasticizer into a reaction kettle according to a ratio, vacuumizing at 100-150 ℃, uniformly mixing, cooling to room temperature, adding a curing accelerator, and sealing for storage;
3) preparation of the component B: adding the reinforcing filler, the filler activating treatment agent and the plasticizer into a reaction kettle, vacuumizing and dehydrating at 100-150 ℃, cooling to room temperature, adding the alkoxy-terminated polydimethylsiloxane, the crosslinking agent, the coupling agent, the catalyst and the pigment, uniformly mixing under a vacuumizing condition, and sealing and storing.
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| CN114921219B (en) * | 2022-04-18 | 2023-08-15 | 小禾电子材料(德清)有限公司 | Double-component organic silica gel adhesive and preparation method thereof |
| CN114921219A (en) * | 2022-04-18 | 2022-08-19 | 浙江润禾有机硅新材料有限公司 | Novel two-component organic silicon adhesive and preparation method thereof |
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| CN115011303B (en) * | 2022-07-25 | 2023-09-08 | 忻州师范学院 | Double-component high-temperature-resistant high-shear-strength organic silica gel adhesive and preparation method thereof |
| CN115011303A (en) * | 2022-07-25 | 2022-09-06 | 忻州师范学院 | Bi-component high-temperature-resistant high-shear-strength organic silicon adhesive and preparation method thereof |
| CN116144314A (en) * | 2022-12-05 | 2023-05-23 | 湖北兴瑞硅材料有限公司 | Sealant for single-component rapid deep curing photovoltaic module and preparation method thereof |
| CN116144314B (en) * | 2022-12-05 | 2024-03-12 | 湖北兴瑞硅材料有限公司 | Sealant for single-component rapid deep curing photovoltaic module and preparation method thereof |
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