CN111732924A - Single-component silane modified polyether sealant and preparation method thereof - Google Patents

Single-component silane modified polyether sealant and preparation method thereof Download PDF

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CN111732924A
CN111732924A CN202010734439.2A CN202010734439A CN111732924A CN 111732924 A CN111732924 A CN 111732924A CN 202010734439 A CN202010734439 A CN 202010734439A CN 111732924 A CN111732924 A CN 111732924A
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silane
modified polyether
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孙乐栋
曹建强
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Dikma New Material Technology Suzhou Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J171/00Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/10Materials in mouldable or extrudable form for sealing or packing joints or covers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer 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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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Material Composition (AREA)
  • Polyethers (AREA)

Abstract

The invention discloses a single-component silane modified polyether sealant and a preparation method thereof, wherein the single-component silane modified polyether sealant comprises a silane modified polyether polymer, a silane modified polyether resin, a plasticizer, a pigment filler, a dehydrating agent, a silane coupling agent, a catalyst, a light stabilizer and an ultraviolet absorbent, and the silane modified polyether polymer comprises polyetheramine, epoxy silane and an epoxy accelerator; after the silane modified polyether polymer is cured, the crosslinking density is higher, the water vapor transmission rate is obviously reduced, the water resistance of the colloid is increased, and the surface glossiness and hardness are obviously improved.

Description

Single-component silane modified polyether sealant and preparation method thereof
Technical Field
The invention relates to the technical field of sealant preparation, in particular to a single-component silane modified polyether sealant and a preparation method thereof.
Background
The modified silane polyether sealant has the advantages of good durability, wide adhesion, paintability, low pollution, environmental friendliness, weather resistance and the like. In Europe, America and Japan, the modified silane polyether sealant is applied to the field of buildings in the last 70 th century and has been developed for a long time; the research is started at the beginning of the century in China, and the industrial process of products in China is slow at present; with the rapid development of modern buildings and industries, higher requirements are put forward on matched sealing glue. However, the traditional modified silane polyether sealant has poor water resistance and low strength compared with epoxy adhesives, polyurethane adhesives, acrylic adhesives and the like, so that the application field of the traditional modified silane polyether sealant is greatly limited.
Disclosure of Invention
The invention aims to provide a single-component silane modified polyether sealant and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that: a single-component silane modified polyether sealant comprises, by weight, 20-100 parts of a silane modified polyether polymer, 5-70 parts of a silane modified polyether resin, 5-50 parts of a plasticizer, 15-200 parts of a pigment and filler, 0.5-10 parts of a dehydrating agent, 0.5-8 parts of a silane coupling agent, 0.5-5 parts of a catalyst, 0.5-3 parts of a light stabilizer and 0.5-4 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 40-150 parts of polyetheramine, 5-20 parts of epoxy silane and 1-6 parts of an epoxy accelerator, and the molecular formula of the prepared silane modified polyether polymer is
Figure DEST_PATH_IMAGE002
The silane modified polyether resin can be selected from STPU, SPUR, STPE, MSP and other structures, the MSP structure is preferred in the invention, and the molecular formula is as follows:
Figure DEST_PATH_IMAGE004
as a further optimization, the molecular weight of the polyetheramine is 1000-5000, and JEFFAMINE D-4000 with the average molecular weight of 4000 is preferred in the invention.
Preferably, the epoxy silane is one or more of 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, and epoxy silane oligomer, preferably 3-glycidoxypropyltrimethoxysilane.
As a further optimization, the epoxy accelerator is 2,4, 6-tri (dimethylaminomethyl) phenol, abbreviated as DMP-30.
By preparing the silane modified polyether polymer, an amino group and an epoxy group are introduced into the structure of the silane modified polyether polymer, so that the body strength and the bonding strength of the cured sealant are improved; meanwhile, the silane modified polyether polymer has higher crosslinking density after being cured, the water vapor transmission rate is obviously reduced, the water resistance of the colloid is increased, and the surface glossiness and hardness are obviously improved.
Preferably, the plasticizer is one or a mixture of more than one of dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, di (2-propylheptyl) phthalate, diiso-1, 2-cyclohexanedicarboxylate and polyether polyol.
The pigment and filler is one or a mixture of more than one of calcium carbonate, titanium dioxide, pearl powder, glitter powder, talcum powder, silicon micropowder, fumed silica, quartz powder, carbon black, polyamide wax, mica powder, aluminum oxide, aluminum hydroxide and the like.
As a further optimization, the dehydrating agent is one or a mixture of more than one of vinyltrimethoxysilane, vinylmethyldimethoxysilane and vinyltriethoxysilane.
More preferably, the silane coupling agent is one or a mixture of more than one of functional silane compounds such as amino-containing silane, epoxy-containing silane, methacryl-containing silane and silane oligomer.
As a further optimization, the catalyst is one or a mixture of more than one of dibutyltin dilaurate, stannous octoate, dibutyltin diacetate, dioctyltin diacetate and diorganotin bis (beta-diketone ester).
As further optimization, the light stabilizer can be one or a mixture of more than one of hindered amine light stabilizers, such as UV-3638, UV-2337, UV-5365, UV-5411, UV-24, UV-531, Tinuvin 1130, Tinuvin326, Tinuvin928, Tinuvin327, Tinuvin329, etc.; the ultraviolet absorbent can be one or more of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitriles and triazines, such as: UV-3346, UV-3529, UV-3581, UV-3853, UV-2908, Tinuvin770, Tinuvin292, Tinuvin5050, Tinuvin5051, and the like.
The invention also provides a preparation method of the single-component silane modified polyether sealant, which comprises the following steps,
s1) preparation of silane-modified polyether polymer: adding polyetheramine into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 60-90 ℃, slowly dropwise adding epoxy silane, reacting at 70-100 ℃ for 2-3h, slowly adding an epoxy promoter, reacting at 70-100 ℃ for 20-30min, and vacuum degassing at the pressure of more than or equal to-0.09 MPa for 15-20min to obtain a colorless and transparent silane modified polyether polymer;
s2) adding the silane modified polyether polymer, the silane modified polyether resin, the plasticizer, the pigment filler, the ultraviolet absorbent and the light stabilizer into a reaction kettle, starting a stirrer, wherein the revolution speed is 5-40rpm, the dispersion rotation speed is 200-1500rpm, the temperature is increased to 115 ℃ and the vacuum degree is not less than-0.095 MPa, and the stirring time is 2-3 h;
s3) cooling to below 50 ℃, adding a dehydrating agent, the revolution speed is 5-40rpm, the dispersion speed is 200-plus-1000 rpm, the stirring time is 5-30min, adding a silane coupling agent and a catalyst, the revolution speed is 5-40rpm, the dispersion speed is 200-plus-1000 rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the single-component silane modified polyether sealant.
Compared with the prior art, the invention has the beneficial effects that:
1. the silane modified polyether polymer prepared by adopting new raw materials and a synthetic route has the advantages that due to the introduction of amino groups and epoxy groups, the hardness of the prepared sealant is greatly improved, the water vapor transmission rate is reduced, and the service life of the sealant in a humid environment is greatly prolonged;
2. in the process of modifying the polyether polymer by silane, isocyanate groups are not introduced, so that the polyether polymer is more environment-friendly and has extremely low smell, and conforms to the major trend of national environment-friendly materials;
3. due to the introduction of amino groups and epoxy groups, the prepared sealant body strength and bonding strength are obviously improved, and the application range of the modified silane polyether sealant in the industrial industries of high-speed rail, automobile, electronic and electric appliance assembly and the like is widened.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
The single-component silane modified polyether sealant comprises, by weight, 40 parts of a silane modified polyether polymer, 60 parts of a silane modified polyether resin, 50 parts of di (2-propyl heptyl) phthalate, 200 parts of calcium carbonate, 5 parts of vinyl trimethoxy silane, 4 parts of amino-containing silane, 2 parts of dibutyltin dilaurate, UV-36381.5 parts of a light stabilizer and UV-33461.5 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 85 parts of polyetheramine D-4000, 11 parts of 3-glycidyl ether oxypropyl trimethoxy silane and 1 part of DMP-30.
The preparation method specifically comprises the following steps: s1) preparation of silane-modified polyether polymer: adding polyetheramine D-4000 into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 70 ℃, slowly dropwise adding 3-glycidyl ether oxypropyl trimethoxysilane, reacting at 90 ℃ for 3 hours, slowly adding DMP-30, reacting at 100 ℃ for 20 minutes, and degassing in vacuum at the pressure of more than or equal to-0.09 MPa for 15 minutes to obtain a colorless and transparent silane modified polyether polymer; s2) adding silane modified polyether polymer, silane modified polyether resin, di (2-propylheptyl) phthalate, calcium carbonate, ultraviolet absorbent UV-3346 and light stabilizer UV-3638 into a reaction kettle, starting a stirrer, revolving at a speed of 5-40rpm and a dispersion speed of 200-1500rpm, heating to 100-115 ℃, keeping the vacuum degree at not less than-0.095 MPa, and stirring for 2-3 h; s3) cooling to below 50 ℃, adding vinyl trimethoxy silane, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, adding amino-containing silane and dibutyltin dilaurate, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the silane modified polyether sealant.
Example 2
The single-component silane modified polyether sealant comprises, by weight, 90 parts of a silane modified polyether polymer, 10 parts of a silane modified polyether resin, 50 parts of di (2-propylheptyl) phthalate, 200 parts of calcium carbonate, 5 parts of vinyl trimethoxy silane, 4 parts of amino-containing silane, 2 parts of dibutyltin dilaurate, UV-36381.5 parts of a light stabilizer and UV-33461.5 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 120 parts of polyetheramine D-4000, 15 parts of 3-glycidyl ether oxypropyl trimethoxy silane and 1.3 parts of DMP-30.
The preparation method specifically comprises the following steps: s1) preparation of silane-modified polyether polymer: adding polyetheramine D-4000 into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 70 ℃, slowly dropwise adding 3-glycidyl ether oxypropyl trimethoxysilane, reacting at 90 ℃ for 3 hours, slowly adding DMP-30, reacting at 100 ℃ for 20 minutes, and degassing in vacuum at the pressure of more than or equal to-0.09 MPa for 15 minutes to obtain a colorless and transparent silane modified polyether polymer; s2) adding silane modified polyether polymer, silane modified polyether resin, di (2-propylheptyl) phthalate, calcium carbonate, ultraviolet absorbent UV-3346 and light stabilizer UV-3638 into a reaction kettle, starting a stirrer, revolving at a speed of 5-40rpm and a dispersion speed of 200-1500rpm, heating to 100-115 ℃, keeping the vacuum degree at not less than-0.095 MPa, and stirring for 2-3 h; s3) cooling to below 50 ℃, adding vinyl trimethoxy silane, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, adding amino-containing silane and dibutyltin dilaurate, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the silane modified polyether sealant.
Example 3
The single-component silane modified polyether sealant comprises, by weight, 20 parts of a silane modified polyether polymer, 70 parts of a silane modified polyether resin, 50 parts of di (2-propyl heptyl) phthalate, 200 parts of calcium carbonate, 5 parts of vinyl trimethoxy silane, 4 parts of amino-containing silane, 2 parts of dibutyltin dilaurate, UV-36381.5 parts of a light stabilizer and UV-33461.5 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 140 parts of polyetheramine D-4000, 17 parts of 3-glycidyl ether oxypropyl trimethoxy silane and 1.5 parts of DMP-30.
The preparation method specifically comprises the following steps: s1) preparation of silane-modified polyether polymer: adding polyetheramine D-4000 into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 70 ℃, slowly dropwise adding 3-glycidyl ether oxypropyl trimethoxysilane, reacting at 90 ℃ for 3 hours, slowly adding DMP-30, reacting at 100 ℃ for 20 minutes, and degassing in vacuum at the pressure of more than or equal to-0.09 MPa for 15 minutes to obtain a colorless and transparent silane modified polyether polymer; s2) adding silane modified polyether polymer, silane modified polyether resin, di (2-propylheptyl) phthalate, calcium carbonate, ultraviolet absorbent UV-3346 and light stabilizer UV-3638 into a reaction kettle, starting a stirrer, revolving at a speed of 5-40rpm and a dispersion speed of 200-1500rpm, heating to 100-115 ℃, keeping the vacuum degree at not less than-0.095 MPa, and stirring for 2-3 h; s3) cooling to below 50 ℃, adding vinyl trimethoxy silane, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, adding amino-containing silane and dibutyltin dilaurate, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the silane modified polyether sealant.
Example 4
The single-component silane modified polyether sealant comprises, by weight, 50 parts of a silane modified polyether polymer, 50 parts of a silane modified polyether resin, 50 parts of di (2-propyl heptyl) phthalate, 200 parts of calcium carbonate, 5 parts of vinyl trimethoxy silane, 4 parts of amino-containing silane, 2 parts of dibutyltin dilaurate, UV-36381.5 parts of a light stabilizer and UV-33461.5 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 70 parts of polyetheramine D-4000, 8.5 parts of 3-glycidyl ether oxypropyl trimethoxy silane and 1 part of DMP-30.
The preparation method specifically comprises the following steps: s1) preparation of silane-modified polyether polymer: adding polyetheramine D-4000 into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 70 ℃, slowly dropwise adding 3-glycidyl ether oxypropyl trimethoxysilane, reacting at 90 ℃ for 3 hours, slowly adding DMP-30, reacting at 100 ℃ for 20 minutes, and degassing in vacuum at the pressure of more than or equal to-0.09 MPa for 15 minutes to obtain a colorless and transparent silane modified polyether polymer; s2) adding silane modified polyether polymer, silane modified polyether resin, di (2-propylheptyl) phthalate, calcium carbonate, ultraviolet absorbent UV-3346 and light stabilizer UV-3638 into a reaction kettle, starting a stirrer, revolving at a speed of 5-40rpm and a dispersion speed of 200-1500rpm, heating to 100-115 ℃, keeping the vacuum degree at not less than-0.095 MPa, and stirring for 2-3 h; s3) cooling to below 50 ℃, adding vinyl trimethoxy silane, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, adding amino-containing silane and dibutyltin dilaurate, the revolution speed is 5-40rpm, the dispersion speed is 200-1000rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the silane modified polyether sealant.
The application example is as follows:
the one-component silane-modified polyether sealants prepared in examples 1 to 4 were compared with commercially available samples, and the experimental data are shown in the following table,
performance of Example 1 Example 2 Example 3 Example 4 Commercial sample
hardness/Shore D 50 70 36 55 20
Bulk strength/MPa 6.5 9.5 4.3 7.3 2.6
Shear strength/MPa 6.8 9.5 4.1 7.4 2.9
Water-immersion adhesion/MPa 5.1 8.9 2.6 6.5 0.8
The test standard is referred to GB/T531.1-2008 vulcanized rubber or thermoplastic rubber indentation hardness test method part I: shore durometer (shore hardness); measuring the tensile stress strain performance of GB/T528-2009 vulcanized rubber or thermoplastic rubber; GBT13477.9-2002 test method for building sealants, part 9, determination of tensile adhesion after immersion in water.
Compared with the commercially available samples, the single-component silane modified polyether sealant disclosed by the invention is higher in hardness, body strength, shear strength and water-soaking adhesiveness than the commercially available samples, and is good in water resistance.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (10)

1. The single-component silane modified polyether sealant is characterized by comprising, by weight, 20-100 parts of a silane modified polyether polymer, 5-70 parts of a silane modified polyether resin, 5-50 parts of a plasticizer, 15-200 parts of a pigment filler, 0.5-10 parts of a dehydrating agent, 0.5-8 parts of a silane coupling agent, 0.5-5 parts of a catalyst, 0.5-3 parts of a light stabilizer and 0.5-4 parts of an ultraviolet absorbent, wherein the silane modified polyether polymer comprises, by weight, 40-150 parts of polyetheramine, 5-20 parts of epoxy silane and 1-6 parts of an epoxy accelerator.
2. The one-component silane-modified polyether sealant as claimed in claim 1, wherein the molecular weight of the polyether amine is 1000-5000-.
3. The one-component silane modified polyether sealant according to claim 1, wherein the epoxy silane is one or more of 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, and epoxy silane oligomer.
4. The one-component silane-modified polyether sealant according to claim 1, wherein the epoxy accelerator is 2,4, 6-tris (dimethylaminomethyl) phenol.
5. The one-component silane-modified polyether sealant according to claim 1, wherein the plasticizer is one or more of dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, di (2-propylheptyl) phthalate, diiso 1, 2-cyclohexanedicarboxylate, and polyether polyol.
6. The one-component silane modified polyether sealant according to claim 1, wherein the pigment and filler is one or a mixture of more than one of calcium carbonate, titanium dioxide, pearl powder, glitter powder, talcum powder, silica micropowder, fumed silica, quartz powder, carbon black, polyamide wax, mica powder, aluminum oxide and aluminum hydroxide.
7. The single-component silane modified polyether sealant as claimed in claim 1, wherein the dehydrating agent is one or more of vinyltrimethoxysilane, vinylmethyldimethoxysilane and vinyltriethoxysilane.
8. The one-component silane-modified polyether sealant according to claim 1, wherein the silane coupling agent is one or more of a silane compound containing amino groups, a silane compound containing epoxy groups, a silane compound containing methacryl groups and silane oligomer functional groups.
9. The one-component silane modified polyether sealant according to claim 1, wherein the catalyst is one or more of dibutyltin dilaurate, stannous octoate, dibutyltin diacetate, dioctyltin diacetate and diorganotin bis (beta-diketonate).
10. A method for preparing the single-component silane modified polyether sealant according to any one of claims 1 to 9, which comprises the following steps,
s1) preparation of silane-modified polyether polymer: adding polyetheramine into a dry 2L reaction kettle, sealing the reaction kettle, replacing air in the reaction kettle with dry nitrogen for 3 times, starting stirring, slowly heating to 60-90 ℃, slowly dropwise adding epoxy silane, reacting at 70-100 ℃ for 2-3h, slowly adding an epoxy promoter, reacting at 70-100 ℃ for 20-30min, and vacuum degassing at the pressure of more than or equal to-0.09 MPa for 15-20min to obtain a colorless and transparent silane modified polyether polymer;
s2) adding the silane modified polyether polymer, the silane modified polyether resin, the plasticizer, the pigment filler, the ultraviolet absorbent and the light stabilizer into a reaction kettle, starting a stirrer, wherein the revolution speed is 5-40rpm, the dispersion rotation speed is 200-1500rpm, the temperature is increased to 115 ℃ and the vacuum degree is not less than-0.095 MPa, and the stirring time is 2-3 h;
s3) cooling to below 50 ℃, adding a dehydrating agent, the revolution speed is 5-40rpm, the dispersion speed is 200-plus-1000 rpm, the stirring time is 5-30min, adding a silane coupling agent and a catalyst, the revolution speed is 5-40rpm, the dispersion speed is 200-plus-1000 rpm, the stirring time is 5-30min, then opening the vacuum, controlling the vacuum degree to be more than or equal to-0.09 MPa, the stirring time is 10-30min, and discharging to obtain the single-component silane modified polyether sealant.
CN202010734439.2A 2020-07-28 2020-07-28 Single-component silane modified polyether sealant and preparation method thereof Pending CN111732924A (en)

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CN113046012A (en) * 2021-02-04 2021-06-29 东莞市德聚胶接技术有限公司 Modified silane-terminated polyether sealant and preparation method thereof
CN113416209A (en) * 2021-07-07 2021-09-21 广州市白云化工实业有限公司 Fluorine-containing cleaning agent and self-cleaning condensed type silane modified polyether adhesive
CN113621343A (en) * 2021-08-06 2021-11-09 科建高分子材料(上海)股份有限公司 Silane modified self-adhesive butyl rubber and waterproof roll containing silane self-adhesive butyl rubber
CN116694285A (en) * 2023-08-07 2023-09-05 信泰永合(烟台)新材料有限公司 High-modulus flame-retardant MS adhesive and preparation method thereof
CN117987064A (en) * 2024-04-02 2024-05-07 广州布鲁奥申新材料科技有限公司 High-limit modified bi-component heat-conducting adhesive for power battery and preparation method thereof

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CN113025254A (en) * 2021-02-04 2021-06-25 东莞市德聚胶接技术有限公司 Non-tin catalytic silane modified polyether sealant and preparation method thereof
CN113046012A (en) * 2021-02-04 2021-06-29 东莞市德聚胶接技术有限公司 Modified silane-terminated polyether sealant and preparation method thereof
CN113046012B (en) * 2021-02-04 2021-09-24 东莞市德聚胶接技术有限公司 Modified silane-terminated polyether sealant and preparation method thereof
CN113416209A (en) * 2021-07-07 2021-09-21 广州市白云化工实业有限公司 Fluorine-containing cleaning agent and self-cleaning condensed type silane modified polyether adhesive
CN113416209B (en) * 2021-07-07 2022-08-09 广州市白云化工实业有限公司 Fluorine-containing cleaning agent and self-cleaning condensed type silane modified polyether adhesive
CN113621343A (en) * 2021-08-06 2021-11-09 科建高分子材料(上海)股份有限公司 Silane modified self-adhesive butyl rubber and waterproof roll containing silane self-adhesive butyl rubber
CN116694285A (en) * 2023-08-07 2023-09-05 信泰永合(烟台)新材料有限公司 High-modulus flame-retardant MS adhesive and preparation method thereof
CN116694285B (en) * 2023-08-07 2023-11-03 信泰永合(烟台)新材料有限公司 High-modulus flame-retardant MS adhesive and preparation method thereof
CN117987064A (en) * 2024-04-02 2024-05-07 广州布鲁奥申新材料科技有限公司 High-limit modified bi-component heat-conducting adhesive for power battery and preparation method thereof
CN117987064B (en) * 2024-04-02 2024-05-28 广州布鲁奥申新材料科技有限公司 High-limit modified bi-component heat-conducting adhesive for power battery and preparation method thereof

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Application publication date: 20201002