CN113337245B - Dealcoholized photovoltaic module sealant and preparation method thereof - Google Patents
Dealcoholized photovoltaic module sealant and preparation method thereof Download PDFInfo
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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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- 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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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Abstract
The invention discloses a dealcoholized photovoltaic component sealant and a preparation method thereof, the photovoltaic component sealant is added with self-made multifunctional telechelic oligosiloxane and modified siloxane tackifier, a cross-linking agent molecular structure is in a telechelic shape and can well react with a main polymer, a structure with certain molecular length and partial hydrophilicity can prevent the dense cross-linking structure after surface drying so that water cannot enter and reach deep curing difficultly, and the dealcoholized photovoltaic component sealant contains a stable benzene ring structure, can improve the degraded activation energy and maintain the sealant bonding strength in a harsh environment; the tackifier with multi-functional group polysiloxane chain link in the molecular structure can increase the compatibility of the main polymer and other components and the adhesion with various base materials, and the hydrophilic group can accelerate the entry of moisture so as to improve deep curing. The dealcoholized photovoltaic module sealant which is anti-aging, durable in bonding and deep in curing can be realized by combining the two self-made cross-linking agents and the tackifier with other components.
Description
Technical Field
The invention belongs to the technical field of silicone sealant for photovoltaic modules, and particularly relates to dealcoholized single-component sealant for a solar photovoltaic module and a preparation method thereof.
Background
As a sustainable energy replacement mode, in order to prevent water and oxygen in the air from entering a solar photovoltaic cell module and causing oxidation of silicon cells in the module, sealant with good bonding sealing property and weather resistance is required to be used for sealing gaps of frames of the photovoltaic cell module. And the main chain of the silicone sealant is a silicon-oxygen bond, the bond energy of the silicone sealant is higher than that of ultraviolet rays, and a crosslinked reticular polymer formed after curing has excellent weather resistance and aging resistance.
Most photovoltaic module factories use the ketoxime removal type organic sealant for frame sealing and junction box bonding of modules at present. However, the deoximated type releases a small-molecular ketoxime upon vulcanization, is corrosive to metals such as copper, lead, and zinc, and also causes contact corrosion to tin-copper bars and PC in solar modules. And the ketoxime has certain harm to human body and water quality. The dealcoholized sealing adhesive releases small-molecule methanol, and the ethanol does not harm human bodies basically.
Therefore, a Chinese patent with publication number CN107267112A discloses a single-component silicone structural sealant for solar photovoltaic and a preparation method thereof, wherein the raw materials of the sealant are as follows: 100 parts of alpha, omega-dihydroxy polydimethylsiloxane, 30-80 parts of alkoxy silicon resin, 5-30 parts of fumed silica, 4-20 parts of cross-linking agent, 1-4 parts of silane coupling agent and 0.2-6 parts of catalyst; wherein the viscosity of the alpha, omega-dihydroxy polydimethylsiloxane is 5-100 Pa.S. The preparation method comprises the following steps: (1) adding alpha, omega-dihydroxy polydimethylsiloxane and alkoxy silicon resin into a vacuum kneader, dehydrating, blending and kneading for 120-360 min at the temperature of 100-150 ℃ and the vacuum degree of-0.095 MPa, and cooling to obtain a base material; (2) and (3) respectively adding the fumed silica, the cross-linking agent, the silane coupling agent and the catalyst into a power planetary stirrer filled with the base material, and stirring for 150-240 min at the rotation speed of 600-1500 rpm under the vacuum degree of-0.095 MPa to obtain the single-component silicone structural sealant for the solar photovoltaic module. The resin formula and the coupling agent ratio are improved, the adhesive property and the compatibility are better, the strength is greatly improved, and the safety of a photovoltaic building is improved; the alkoxy resin is a special reinforcing resin, and is beneficial to improving the strength of the sealant.
Another chinese patent publication No. CN108059945A discloses an organosilicon sealant for photovoltaic dual-glass components and a preparation method thereof, wherein the organosilicon sealant comprises the following raw materials in parts by weight: 100 parts of alkoxy-terminated polydimethylsiloxane, 50-80 parts of active nano calcium carbonate, 5-10 parts of modified fumed silica, 2-20 parts of silicone oil plasticizer, 10-15 parts of cross-linking agent, 1-5 parts of catalyst and 2-4 parts of adhesion promoter. The organosilicon sealant has high strength, good elasticity, excellent bonding performance to a substrate and excellent weather resistance, has the performance retention rate of over 80 percent in long-term environments of salt mist, ultraviolet rays, high temperature and high humidity, and is suitable for structural bonding and sealing of a photovoltaic dual-glass assembly.
Another chinese patent publication No. CN109181623A discloses a silicone sealant for fast curing photovoltaic modules and a preparation method thereof, which comprises the following components: the composite material comprises alkoxy-terminated polydimethylsiloxane, a reinforcing agent, a flame retardant, a thixotropic agent, a cross-linking agent, a coupling agent and a first catalyst, wherein the cross-linking agent is multifunctional polysiloxane, the coupling agent is a secondary amine silane coupling agent, and the first catalyst is a chelate titanate catalyst. According to the invention, the multifunctional polysiloxane is used as a cross-linking agent, and is compounded with the secondary amine silane coupling agent, the chelate titanate catalyst and the flame retardant, so that the silicone sealant for the rapidly cured photovoltaic module, which is suitable for various bonding materials, has excellent bonding strength, is rapidly cured and is not easy to yellow, can be obtained, and the sealant for the rapidly cured photovoltaic module is prepared from alkoxy-terminated polydimethylsiloxane, a reinforcing agent, a thixotropic agent, a cross-linking agent with a special structure, the secondary amine coupling agent and two catalysts.
Another Chinese patent with publication number CN110982448A discloses a dealcoholized RTV silicone rubber sealant, which is prepared by reacting aminosilane with silazane containing vinyl, and can be used for preparing dealcoholized RTV silicone rubber (such as sealing glue and pouring sealant). The dealcoholized RTV silicone rubber prepared by the tackifier has obviously higher adhesive property to base materials than common dealcoholized RTV silicone rubber, and has excellent adhesive property to difficult-to-bond materials such as polybutylene terephthalate (PBT), Polycarbonate (PC), polyphenylene sulfide (PPS), polyethylene terephthalate (PET), high impact strength polystyrene (HIPS), acrylic resin and the like.
The prior art is an improvement aiming at the strength, and no dealcoholization type silicone sealant aiming at the durable bonding and deep curing under the ageing resistance exists.
Disclosure of Invention
The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
Aiming at the harsh requirement of the photovoltaic assembly environment, the invention provides the persistent bonding dealcoholized sealant suitable for the photovoltaic assembly, and an improved preparation method is adopted, so that the sealant is simple to manufacture, the raw materials are easy to obtain, and the finished product can achieve deep curing and persistent bonding under an aging condition, so that the existing technical problems are well solved.
According to one aspect of the application, a dealcoholized photovoltaic module sealant is provided, which comprises the following components:
wherein the coupling agent is an amine coupling agent, and the catalyst is selected from titanate or titanium chelate; the cross-linking agent is self-made multifunctional telechelic oligosiloxane, and the structural formula of the multifunctional telechelic oligosiloxane is as follows:
wherein R is selected from- (OCH)3)，-(OC2H5) M is selected from an integer of 1 to 10 (preferably an integer of 2 to 8).
Further preferably, the tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is shown in the specification
Wherein n is selected from an integer of 1 to 10 (preferably an integer of 2 to 8). The tackifier contains silica chain links, and has good compatibility with the main body and other components, and the special heterocyclic structure can improve the adhesive force to various base materials.
The multifunctional telechelic oligosiloxane cross-linking agent has multiple reactive groups at the chain end, the molecular structure is in a telechelic shape and can well react with a main polymer, the multifunctional telechelic oligosiloxane cross-linking agent contains a stable benzene ring structure and can improve the degraded activation energy, and the multifunctional telechelic oligosiloxane cross-linking agent has a structure with certain molecular length and partial hydrophilicity and can prevent the cross-linking structure from being dense after surface drying so that moisture cannot enter and be difficult to achieve deep curing. The amine silane coupling agent is adopted as the coupling agent, so that the adhesive property of the sealant can be improved.
More preferably, the viscosity of the α, ω -dihydroxypolydimethylsiloxane is 50Pa · s to 80Pa · s at normal temperature and pressure (25 ℃, 101KPa), and the viscosity of the diluent is 5Pa · s to 15Pa · s at normal temperature and pressure (25 ℃, 101 KPa).
More preferably, the reinforcing filler is one or more of silicon micropowder with the particle size of 10-15 microns, nano calcium carbonate with the particle size of 15-30 microns, micropowder calcium carbonate with the particle size of 1-5 microns and talcum powder with the particle size of 5-20 microns;
more preferably, the amine coupling agent is one of gamma-aminopropyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane and phenylaminomethyltrimethoxysilane
Further preferably, the thixotropic agent has a specific surface area of 50m2/g-150m2Fumed silica/g.
Further preferably, the catalyst is one of tetraisopropylbis (dioctylphosphite acyloxy) titanate, diisopropyl bisacetoacetate titanate, acetoacetic ester chelate of n-butyl titanate and acetylacetone chelate of t-butyl titanate.
According to another aspect of the present application, there is provided a method for preparing a dealcoholized photovoltaic module sealant, comprising the steps of:
step 1: adding alpha, omega-dihydroxy dimethyl siloxane, a reinforcing filler and a thixotropic agent into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
According to the scheme, the dealcoholized photovoltaic module sealant and the preparation method thereof are realized, and the dealcoholized photovoltaic module sealant which is suitable for various materials, ageing-resistant, durable, adhesive and deep curing is obtained by combining the self-prepared multifunctional telechelic oligosiloxane as a cross-linking agent, the self-prepared modified siloxane as a tackifier, the amine as a coupling agent, the chelate titanate as a catalyst and a reinforcing filler.
Detailed Description
Specific embodiments of the present invention will be illustrated below based on the following examples. It should be noted that the figures and description omit representation and description of components and processes that are not relevant to the present invention and that are known to those of ordinary skill in the art for the sake of clarity.
Example 1
The embodiment provides a dealcoholized photovoltaic module sealant which is prepared from the following raw materials in parts by weight:
100 parts of alpha, omega dihydroxy polydimethylsiloxane, 10 parts of dimethyl polysiloxane, 120 parts of reinforcing filler, 5 parts of thixotropic agent, 5 parts of cross-linking agent, 3 parts of coupling agent, 2 parts of tackifier and 2 parts of catalyst.
Wherein the viscosity of the alpha, omega dihydroxy polydimethylsiloxane is 50 Pa.s under normal temperature and pressure (25 ℃, 101KPa), and the viscosity of the diluent is 5 Pa.s under normal temperature and pressure (25 ℃, 101 KPa).
The reinforcing filler is formed by combining silicon micropowder with the grain diameter of 15 mu m, nano calcium carbonate with the grain diameter of 50 mu m and micropowder calcium carbonate with the grain diameter of 5 mu m.
The thixotropic agent has a specific surface area of 150m2Fumed silica/g.
The cross-linking agent is multifunctional telechelic oligosiloxane with the structural formula
In this example, the R group is- (OCH)3) And m is an integer of 4.
The coupling agent is gamma-aminopropyl trimethoxy silane.
The tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is as follows:
in this embodiment n is an integer 4.
The catalyst is one of ethyl diacetate diisopropyl titanate, ethyl acetoacetate chelate of n-butyl titanate and acetylacetone chelate of tert-butyl titanate.
The embodiment also provides a preparation method of the dealcoholized photovoltaic module sealant, which comprises the following steps:
step 1: adding alpha, omega-dihydroxy dimethyl siloxane, a reinforcing filler, a thixotropic agent and an antioxidant into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
Example 2
The embodiment provides a dealcoholized photovoltaic module sealant which is prepared from the following raw materials in parts by weight:
100 parts of alpha, omega dihydroxy polydimethylsiloxane, 10 parts of dimethyl polysiloxane, 120 parts of reinforcing filler, 5 parts of thixotropic agent, 5 parts of cross-linking agent, 3 parts of coupling agent, 2 parts of tackifier and 2 parts of catalyst.
Wherein the viscosity of the alpha, omega dihydroxy polydimethylsiloxane is 50 Pa.s under normal temperature and pressure (25 ℃, 101KPa), and the viscosity of the diluent is 5 Pa.s under normal temperature and pressure (25 ℃, 101 KPa).
The reinforcing filler is formed by combining silicon micropowder with the grain diameter of 15 mu m, nano calcium carbonate with the grain diameter of 50 mu m and micropowder calcium carbonate with the grain diameter of 5 mu m.
Thixotropic agent is a proportion tableArea of 150m2Fumed silica/g.
The cross-linking agent is multifunctional telechelic oligosiloxane, and the structural formula of the multifunctional telechelic oligosiloxane is shown in the specification
Wherein the R group is- (OC 2H)5) And m is an integer of 4.
The coupling agent is gamma-aminopropyl trimethoxy silane.
The tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is as follows:
wherein n is an integer 4.
The catalyst is one of ethyl diacetate diisopropyl titanate, ethyl acetoacetate chelate of n-butyl titanate and acetylacetone chelate of tert-butyl titanate.
The preparation method of the dealcoholized photovoltaic module sealant with the formula comprises the following steps:
step 1: adding alpha, omega-dihydroxy dimethyl siloxane, a reinforcing filler and a thixotropic agent into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
Example 3
The embodiment of the invention provides a dealcoholized photovoltaic component sealant which is prepared from the following raw materials in parts by weight:
100 parts of alpha, omega dihydroxy polydimethylsiloxane, 10 parts of dimethyl polysiloxane, 120 parts of reinforcing filler, 5 parts of thixotropic agent, 5 parts of cross-linking agent, 3 parts of coupling agent, 2 parts of tackifier and 2 parts of catalyst.
Wherein the viscosity of the alpha, omega dihydroxy polydimethylsiloxane is 50 Pa.s at normal temperature and pressure (25 ℃, 101KPa), and the viscosity of the diluent is 5 Pa.s at normal temperature and pressure (25 ℃, 101 KPa).
The reinforcing filler is formed by combining silicon micropowder with the grain diameter of 15 mu m, nano calcium carbonate with the grain diameter of 50 mu m and micropowder calcium carbonate with the grain diameter of 5 mu m.
The thixotropic agent has a specific surface area of 150m2Fumed silica/g.
The cross-linking agent is multifunctional telechelic oligosiloxane, and the structural formula of the multifunctional telechelic oligosiloxane is shown in the specification
Wherein the R group is- (OCH3) and m is an integer of 8.
The coupling agent is phenylaminomethyltrimethoxysilane.
The tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is as follows:
wherein n is an integer 4.
The catalyst is one of ethyl diacetate diisopropyl titanate, ethyl acetoacetate chelate of n-butyl titanate and acetylacetone chelate of tert-butyl titanate.
The preparation method of the dealcoholized photovoltaic module sealant with the formula comprises the following steps:
step 1: adding alpha, omega-dihydroxy dimethyl siloxane, a reinforcing filler and a thixotropic agent into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
Example 4
The embodiment of the invention provides a dealcoholized photovoltaic component sealant which is prepared from the following raw materials in parts by weight:
100 parts of alpha, omega dihydroxy polydimethylsiloxane, 10 parts of dimethyl polysiloxane, 120 parts of reinforcing filler, 5 parts of thixotropic agent, 5 parts of cross-linking agent, 3 parts of coupling agent, 2 parts of tackifier and 2 parts of catalyst.
Wherein the viscosity of the alpha, omega dihydroxy polydimethylsiloxane is 50 Pa.s under normal temperature and pressure (25 ℃, 101KPa), and the viscosity of the diluent is 5 Pa.s under normal temperature and pressure (25 ℃, 101 KPa).
The reinforcing filler is formed by combining silicon micropowder with the grain diameter of 15 mu m, nano calcium carbonate with the grain diameter of 50 mu m and micropowder calcium carbonate with the grain diameter of 5 mu m.
The thixotropic agent has a specific surface area of 150m2Fumed silica/g.
The cross-linking agent is multifunctional telechelic oligosiloxane, and the structural formula of the multifunctional telechelic oligosiloxane is shown in the specification
Wherein the R group is- (OC2H5) and m is an integer of 8
The coupling agent is phenylaminomethyltrimethoxysilane.
The tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is as follows:
wherein n is an integer 8.
The catalyst is one of ethyl diacetate diisopropyl titanate, ethyl acetoacetate chelate of n-butyl titanate and acetylacetone chelate of tert-butyl titanate.
The preparation method of the dealcoholized photovoltaic module sealant with the formula comprises the following steps:
step 1: adding alpha, omega-dihydroxy dimethyl siloxane, a reinforcing filler and a thixotropic agent into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
Comparative example 1: comparative example 1 differs from example 1 in that: the other formulation and preparation method were the same as those of example 1 without the addition of tackifier.
Comparative example 2: comparative example 2 differs from example 2 in that: the crosslinker used was methyltrimethoxysilane and the other formulation and preparation were the same as those of example 2.
Comparative example 3: comparative example 3 differs from example 3 in that: the crosslinker used was methyltrimethoxysilane, the tackifier was not added, and the other formulation and preparation were the same as those of example 3.
The performance test conditions of the dealcoholized photovoltaic component sealant are as follows:
1. the thermal cycle aging test is carried out according to the requirement of 10.11 in GB/T9535-1998;
2. damp-freeze aging condition test A damp-heat cycle test was performed as 10.13 of 9535-1998;
3. ultraviolet (UV) ageing conditions test an Ultraviolet (UV) experiment was performed as specified in IEC61215:2005 at 10.10;
4. adhesion testing experiments were performed as specified in the edge sealing protective agent for JG/T465-2014 architectural photovoltaic laminated glass.
The relevant test data for the preferred examples 1-4 and comparative examples 1-2 according to the present invention based on the above performance test conditions are as follows:
the adhesion strength after the uv aging test was as follows:
the bond strengths after the thermal cycle aging test were as follows:
the bond strength after the humid freezing aging test is as follows:
the above experimental data show that the dealcoholized photovoltaic module sealants prepared in examples 1 to 4 have high deep curing performance, excellent bonding strength and outstanding bonding strength to various materials. Compared with the data of comparative examples 1 to 3, the data of examples 1 to 4 can still maintain excellent bonding strength after various aging tests, can meet the continuous use of the photovoltaic module in harsh environment, and meet the use requirement of the sealant of the photovoltaic module
The invention has the beneficial effects that: by adding a self-made multifunctional telechelic oligosiloxane and a self-made modified siloxane tackifier. The cross-linking agent has a molecular structure in a shape of a remote claw, can well react with a main polymer, has a certain molecular length and a partial hydrophilic structure, can prevent the cross-linking structure from being dense after surface drying so that water cannot enter and be difficult to achieve deep curing, contains a stable benzene ring structure, can improve the degraded activation energy, and maintains the adhesive strength of the sealant in a harsh environment; the tackifier with multi-functional group polysiloxane chain link in the molecular structure can increase the compatibility of the main polymer and other components and the adhesion with various base materials, and the hydrophilic group can accelerate the entry of moisture so as to improve deep curing. The dealcoholized photovoltaic module sealant which is suitable for various materials, is anti-aging, durable in bonding and deep in curing is prepared by combining the two self-made cross-linking agents, the tackifier and other components.
In the foregoing description of specific embodiments of the invention, features described and/or illustrated with respect to one embodiment may be used in the same or similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
In the above embodiments and examples, numerical reference numerals have been used to indicate various steps and/or elements. It will be appreciated by those of ordinary skill in the art that these reference numerals are merely for convenience of description and drawing and do not denote any order or any other limitation.
While the present invention has been disclosed above by the description of specific embodiments thereof, it should be understood that all of the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements and equivalents of the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.
Claims (7)
1. The dealcoholized photovoltaic module sealant is characterized in that: the material comprises the following components:
wherein the coupling agent is an amine coupling agent, and the catalyst is selected from titanate or titanium chelate; the cross-linking agent is self-made multifunctional telechelic oligosiloxane, the multifunctional telechelic oligosiloxane has multiple reaction groups at the chain end, and the molecular structure is in a telechelic shape; the multifunctional telechelic oligosiloxane has the structural formula:
wherein R is selected from- (OCH)3)，-(OC2H5) M is an integer of 1 to 10;
the tackifier is self-made modified siloxane, and the structural formula of the modified siloxane is shown in the specification
Wherein n is an integer from 1 to 10.
2. The dealcoholized photovoltaic module sealant according to claim 1, wherein: the viscosity range of the alpha, omega dihydroxy polydimethylsiloxane at normal temperature and normal pressure is 50 Pa.s-80 Pa.s, and the viscosity range of the diluent at normal temperature and normal pressure is 5 Pa.s-15 Pa.s.
3. The dealcoholized photovoltaic module sealant according to claim 1, wherein: the reinforcing filler is one or more of silicon micropowder with the particle size of 10-15 mu m, calcium carbonate with the particle size of 15-30 mu m, micropowder calcium carbonate with the particle size of 1-5 mu m and talcum powder with the particle size of 5-20 mu m.
4. The dealcoholized photovoltaic module sealant according to claim 1, wherein: the amine coupling agent is one of gamma-aminopropyl trimethoxy silane, N-beta (aminoethyl) -gamma-aminopropyl trimethoxy silane and phenylaminomethyl trimethoxy silane.
5. The dealcoholized photovoltaic module sealant according to claim 1, wherein: the thixotropic agent has a specific surface area of 50m2/g-150m2Fumed silica/g.
6. The dealcoholized photovoltaic module sealant according to claim 1, wherein: the catalyst is one of tetraisopropyl di (dioctyl phosphate acyloxy) titanate, diethyl diacetyl acetate ethyl titanate, ethyl acetoacetate chelate of n-butyl titanate and acetylacetone chelate of tert-butyl titanate.
7. The method of making the dealcoholized photovoltaic module sealant according to any one of claims 1 to 6, comprising the steps of:
step 1: adding alpha, omega dihydroxy polydimethylsiloxane, reinforcing filler and thixotropic agent into a vacuum kneader, heating and kneading for 2-3h at the temperature of 120-180 ℃ and the vacuum degree of-0.090 MPa, and cooling to obtain a semi-finished product;
step 2: gradually adding the cross-linking agent, the catalyst, the coupling agent and the diluent into a semi-finished planetary stirrer, and stirring at the rotation speed of 300-500rpm for 1-2h under the vacuum degree of-0.0090 MPa to obtain the dealcoholized photovoltaic module sealant.
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| CN115029095A (en) * | 2022-06-28 | 2022-09-09 | 保定嘉盛光电科技股份有限公司 | Photovoltaic panel adhesive and preparation method thereof |
| CN115403517B (en) * | 2022-10-08 | 2023-08-11 | 万华化学集团股份有限公司 | Organic-inorganic hybrid heteropolyacid solid tackifier, preparation method and dealcoholized silicone adhesive |
| CN116997195B (en) * | 2023-08-07 | 2024-03-08 | 厦门晶晟富阳科技有限公司 | Hollow low-radiation perovskite power generation glass for photovoltaic building integration |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450537A2 (en) * | 1990-03-29 | 1991-10-09 | Dow Corning Toray Silicone Company Ltd. | Curable organopolysiloxane composition |
| CN103122008A (en) * | 2011-12-13 | 2013-05-29 | 曹坚林 | Silane coupling agent containing cyanogen group and preparation method of silane coupling agent |
| CN103210041A (en) * | 2010-11-10 | 2013-07-17 | 横滨橡胶株式会社 | Thermosetting silicone resin composition, and silicone resin-containing structure and optical semiconductor element encapsulant obtained using same |
| CN103890046A (en) * | 2011-10-20 | 2014-06-25 | 道康宁东丽株式会社 | Multi-component room-temperature-curable silicone elastomer composition |
| CN103965482A (en) * | 2014-04-04 | 2014-08-06 | 阳江市万丰实业有限公司 | Preparation method of tackifier as well as polyamideadhesion type mixed silicone rubber and preparation method of silicone rubber |
| CN104987853A (en) * | 2015-07-30 | 2015-10-21 | 烟台德邦先进硅材料有限公司 | Annular adhesive and synthesizing method thereof |
| CN107652886A (en) * | 2017-10-23 | 2018-02-02 | 烟台德邦先进硅材料有限公司 | A kind of low LED organosilicon crystal-bonding adhesives of operating time long light decay |
| CN108570070A (en) * | 2017-03-08 | 2018-09-25 | 赢创德固赛有限公司 | The method for being used to prepare three [3- (alkoxysilyl) propyl] isocyanuric acid esters |
| CN108728011A (en) * | 2018-08-10 | 2018-11-02 | 烟台德邦先进硅材料有限公司 | A kind of novel bonding accelerating agent and preparation method thereof |
| CN112608711A (en) * | 2020-12-04 | 2021-04-06 | 中国航发北京航空材料研究院 | Preparation method of single-component transparent organosilicon sealant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005053966A (en) * | 2003-08-05 | 2005-03-03 | Shin Etsu Chem Co Ltd | Thermosetting organopolysiloxane composition and adhesive |
| JP5545862B2 (en) * | 2009-11-04 | 2014-07-09 | 信越化学工業株式会社 | Isocyanuric ring-containing terminal vinyl polysiloxane |
| JP2012107096A (en) * | 2010-11-16 | 2012-06-07 | Kaneka Corp | Heat conductive curable resin composition and curable resin molded product |
-
2021
- 2021-07-26 CN CN202110846734.1A patent/CN113337245B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450537A2 (en) * | 1990-03-29 | 1991-10-09 | Dow Corning Toray Silicone Company Ltd. | Curable organopolysiloxane composition |
| CN103210041A (en) * | 2010-11-10 | 2013-07-17 | 横滨橡胶株式会社 | Thermosetting silicone resin composition, and silicone resin-containing structure and optical semiconductor element encapsulant obtained using same |
| CN103890046A (en) * | 2011-10-20 | 2014-06-25 | 道康宁东丽株式会社 | Multi-component room-temperature-curable silicone elastomer composition |
| CN103122008A (en) * | 2011-12-13 | 2013-05-29 | 曹坚林 | Silane coupling agent containing cyanogen group and preparation method of silane coupling agent |
| CN103965482A (en) * | 2014-04-04 | 2014-08-06 | 阳江市万丰实业有限公司 | Preparation method of tackifier as well as polyamideadhesion type mixed silicone rubber and preparation method of silicone rubber |
| CN104987853A (en) * | 2015-07-30 | 2015-10-21 | 烟台德邦先进硅材料有限公司 | Annular adhesive and synthesizing method thereof |
| CN108570070A (en) * | 2017-03-08 | 2018-09-25 | 赢创德固赛有限公司 | The method for being used to prepare three [3- (alkoxysilyl) propyl] isocyanuric acid esters |
| CN107652886A (en) * | 2017-10-23 | 2018-02-02 | 烟台德邦先进硅材料有限公司 | A kind of low LED organosilicon crystal-bonding adhesives of operating time long light decay |
| CN108728011A (en) * | 2018-08-10 | 2018-11-02 | 烟台德邦先进硅材料有限公司 | A kind of novel bonding accelerating agent and preparation method thereof |
| CN112608711A (en) * | 2020-12-04 | 2021-04-06 | 中国航发北京航空材料研究院 | Preparation method of single-component transparent organosilicon sealant |
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