CN115612444A - Adhesive for silica gel protective film attached to cambered surface glass, preparation method of adhesive and adhesive tape - Google Patents
Adhesive for silica gel protective film attached to cambered surface glass, preparation method of adhesive and adhesive tape Download PDFInfo
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- CN115612444A CN115612444A CN202211071533.XA CN202211071533A CN115612444A CN 115612444 A CN115612444 A CN 115612444A CN 202211071533 A CN202211071533 A CN 202211071533A CN 115612444 A CN115612444 A CN 115612444A
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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
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/08—Macromolecular additives
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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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
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Organic Chemistry (AREA)
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides an adhesive for a silica gel protective film attached to cambered surface glass, which comprises the following raw materials in parts by weight: vinyl-containing polysiloxane A and vinyl-containing polysiloxane B, wherein the total amount of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane is 100 parts; further comprising: 0.6-1.5 parts of a crosslinking agent; 1.0-1.5 parts of platinum catalyst; 0.1 part of inhibitor; 0.5-1.0 part of coupling agent; 100-200 parts of a diluting solvent. The invention also provides a preparation method of the adhesive for the silica gel protective film attached to the cambered glass and an adhesive tape prepared from the adhesive. The curing rate of the adhesive is greatly improved by using two different vinyl-containing polysiloxanes as main components of the adhesive.
Description
Technical Field
The invention relates to the field of adhesives, in particular to an adhesive for a silica gel protective film attached to cambered glass, a preparation method of the adhesive and an adhesive tape.
Background
The organic silicon pressure-sensitive adhesive is a novel adhesive, has wide development prospect, and is a high-quality and high-grade variety of the pressure-sensitive adhesive. It not only has the characteristics of good bonding strength and initial adhesion of pressure-sensitive adhesive, but also has good adhesion to high-energy and low-energy surface materials, can keep bonding strength and flexibility at minus 50-200 ℃ and can be used for a long time. The excellent chemical inertia and electrical property of the organic silicon pressure-sensitive adhesive make the organic silicon pressure-sensitive adhesive have irreplaceable advantages in the electronic industry and the medical industry. The method is widely applied to the aspects of electronics, medicine, optics, electroplating protection, new energy, material processing and the like.
With the rapid development of electronic products, supporting industries related to the electronic products are also developed, including industries of electronic product screens and related protective films. The development of new processes and new technologies requires the continuous extension of the use of silicone pressure-sensitive adhesives. In recent years, more and more electronic product display screens are beginning to move to the development path of 2.5D/3D arc screens. Therefore, the silica gel protective film with good adhesion performance to the arc screen also becomes a mainstream direction.
The components of the existing adhesive are improved, and a novel adhesive which is attached to the silica gel protective film of the cambered glass is designed.
Disclosure of Invention
In order to overcome the defects of the prior art, the first object of the invention is to provide an adhesive for a silica gel protective film attached to a cambered glass, which comprises the following raw materials in parts by weight:
vinyl-containing polysiloxane A and vinyl-containing polysiloxane B, wherein the total amount of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane is 100 parts; further comprising:
preferably, the weight ratio of the vinyl group-containing polysiloxane a to the vinyl group-containing polysiloxane B is 2.
Preferably, the structural formulas of the vinyl group-containing polysiloxane A and the vinyl group-containing polysiloxane B are as follows:
R b Me (3-b) SiO(SiMe 2 O)n(SiMe (2-a) ViaO)mSiMe (3-b) R b wherein R is vinyl; m and n are positive integers, and the weight average molecular weight of the polysiloxane is 450000-650000; a is an integer of 0 to 2, and b is an integer of 1 to 3.
Preferably, the weight average molecular weight of the vinyl group-containing polysiloxane a is between 60 ten thousand and 65 ten thousand, and the weight average molecular weight of the vinyl group-containing polysiloxane B is between 45 ten thousand and 50 ten thousand.
Preferably, the cross-linking agent is a silicone oil containing a hydrosilation (SiH) group, the molecular structure of which is:
(CH3) 3 SiO[(CH3) 2 SiO]m[(CH3)(H)SiO]nSi(CH3) 3 ；
wherein, the mass percent of H is 1.0% -1.2%; the cross-linking agent has a viscosity of 30 to 100mpa.s at 25 ℃.
Preferably, the platinum content of the platinum catalyst is 3000ppm to 4000ppm.
Preferably, the platinum catalyst is a catalyst of a platinum-a, w-bis (n-octyl) polymethylvinylsiloxane complex.
Preferably, the coupling agent is at least one of r-glycidoxypropyltrimethoxysilane and r-methacryloxypropyltrimethoxysilane.
The second purpose of the invention is to provide a method for preparing the adhesive for the silica gel protective film attached to the cambered glass, which comprises the following steps:
adding a solvent and polysiloxane containing vinyl into a reaction kettle, and stirring at normal temperature for 1 hour to obtain a silicon rubber dispersion liquid;
and sequentially adding a cross-linking agent, an inhibitor, a coupling agent and a catalyst into the dispersion liquid, and fully and uniformly mixing to obtain the adhesive.
A third object of the present invention is to provide an adhesive tape, comprising at least: a substrate layer and the adhesive layer of claim 1; the adhesive layer is coated on one surface or two surfaces of the base material layer.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an adhesive for a silica gel protective film attached to cambered surface glass, which comprises the following raw materials in parts by weight: vinyl-containing polysiloxane A and vinyl-containing polysiloxane B, wherein the total amount of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane is 100 parts; further comprising: 0.6-1.5 parts of a crosslinking agent; 1.0-1.5 parts of platinum catalyst; 0.1 part of inhibitor; 0.5-1.0 part of coupling agent; 100-200 parts of a diluting solvent. The invention also provides a preparation method of the adhesive for the silica gel protective film attached to the cambered glass and an adhesive tape prepared from the adhesive. The curing rate of the adhesive is greatly improved by using two different vinyl-containing polysiloxanes as main components of the adhesive.
The foregoing description is only an overview of the technical solutions of the present invention, and some embodiments are described in detail below in order to make the technical solutions of the present invention more clearly understood and to implement the technical solutions according to the content of the description. Specific embodiments of the present invention are given in detail by the following examples.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention, which enables one skilled in the art to practice the present invention with reference to the accompanying text.
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, various embodiments or technical features described below may be arbitrarily combined to form a new embodiment.
The invention relates to an adhesive for a silica gel protective film attached to cambered surface glass, which comprises the following raw materials in parts by weight:
vinyl-containing polysiloxane A and vinyl-containing polysiloxane B, wherein the total amount of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane is 100 parts; further comprising:
30% -50%; and the curing temperature is 160 ℃, the complete curing can be realized within 30 seconds to 1 minute, and the aim of direct rolling and rapid curing after the substrate is coated and rubberized can be achieved.
In some embodiments, the weight ratio of the vinyl-containing polysiloxane A to the vinyl-containing polysiloxane B is 2.
In some embodiments, vinyl-containing polysiloxane a and vinyl-containing polysiloxane B have a viscosity of 30000mpa.s at 25 ℃; the content of vinyl is 0.08% -0.12%.
It is to be understood that the vinyl groups in the vinyl group-containing polysiloxane may be disposed at any position of the polysiloxane. In some embodiments, to increase catalytic efficiency, it is a polysiloxane with vinyl groups at the terminal groups. For example, the structural formulas of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane B are as follows:
R b Me (3-b) SiO(SiMe 2 O)n(SiMe (2-a) ViaO)mSiMe (3-b) R b wherein R is vinyl; m and n are positive integers, and the weight average molecular weight of the polysiloxane is 450000-650000; a is an integer of 0 to 2, and b is an integer of 1 to 3.
Specific examples of the vinyl group-containing polysiloxane (a) are the following, but not limited thereto:
ViMe 2 SiO(SiMe 2 O)n(SiMeViO)mSiMe 2 Vi；
ViMe 2 SiO(SiMe 2 O)n(SiVi 2 O)mSiMe 2 Vi；
ViMe 2 SiO(SiMe 2 O)n(SiMeViO)0.9m(SiVi 2 O)0.1mSiMe 2 Vi；
ViMe 2 SiO(SiMe 2 O)n(SiMeViO)0.1m(SiVi2O)0.9mSiMe 2 Vi；
ViMe 2 SiO(SiMe 2 O)n(SiMeViO)0.5m(SiVi2O)0.5mSiMe 2 Vi；
Vi 2 MeSiO(SiMe 2 O)n(SiMeViO)mSiMeVi 2 ；
Vi 2 MeSiO(SiMe 2 O)n(SiMeViO)0.5m(SiVi 2 O)0.5mSiMeVi 2 ；
Vi 2 MeSiO(SiMe 2 O)n(SiVi 2 O)mSiMeVi 2 and so on.
In some embodiments, vinyl-containing polysiloxane a has a much greater molecular weight than vinyl-containing polysiloxane B; or the molecular weight of the vinyl group-containing polysiloxane A is much smaller than that of the vinyl group-containing polysiloxane B. The vinyl-containing polysiloxane A and the vinyl-containing polysiloxane B have large difference in vinyl content, so that the adjustability of the silica gel protective film on the adhesive force is ensured when polysiloxanes with different vinyl contents are mixed. Such as: the weight average molecular weight of the vinyl group-containing polysiloxane A is set to be between 60 and 65 million, and the weight average molecular weight of the vinyl group-containing polysiloxane B is set to be between 45 and 50 million, so that when the vinyl group-containing polysiloxane A and the vinyl group-containing polysiloxane B are mixed, the adhesive force of the silicone protective film is adjusted by adjusting the molecular weights.
In some embodiments, the crosslinking agent is a silicone oil containing hydrosilation (SiH) groups having a molecular structure of:
(CH3) 3 SiO[(CH3) 2 SiO]m[(CH3)(H)SiO]nSi(CH3) 3 ；
wherein the mass percent of H is 1.0-1.2%; the viscosity of the crosslinking agent at 25 ℃ is 30-100mpa.s.
The cross-linking agent is silicone oil containing a hydrosilation (SiH) group, and the molecular structure is as follows: me 3 SiO(Me 2 SiO)m(Me (2-a) H a SiO)nSiMe 3 (ii) a a is an integer of 1 to 2, wherein the mass percent of hydrogen (H) is 1.0 to 1.2 percent; more preferably 1.0% to 1.1%, and still more preferably 1.05% to 1.1%; viscosity at 25 ℃ of 30-100mpa · s;
specific examples of silicone oil crosslinkers containing hydrosilation (SiH) groups are the following, but are not limited to:
Me 3 SiO(Me 2 SiO)m(MeHSiO)nSiMe 3
Me 3 SiO(Me 2 SiO)m(MeHSiO)0.1n(H2SiO)0.9nSiMe 3
Me 3 SiO(Me 2 SiO)m(MeHSiO)0.9n(H2SiO)0.1nSiMe 3
Me 3 SiO(Me 2 SiO)m(MeHSiO)0.4n(H2SiO)0.6nSiMe 3
Me 3 SiO(Me 2 SiO)m(MeHSiO)0.5n(H2SiO)0.5nSiMe 3
Me 3 SiO(Me 2 SiO)m(H 2 SiO) nSiMe, and the like.
Where m, n are determined by the chain length of the crosslinker itself, which affects the hydrogen content of the crosslinker.
In some embodiments, the platinum content of the platinum catalyst is from 3000ppm to 4000ppm; preferably, the platinum content in the platinum catalyst is 3500ppm to 4000ppm to ensure the catalytic efficiency.
In some embodiments, the platinum catalyst is a platinum catalyst coordinated to methylvinylsiloxane and is effective to catalyze the addition reaction above 80 ℃; specifically, the platinum catalyst is a catalyst which is prepared by carrying out coordination exchange on a Karster catalyst by using siloxane oligomer containing long-chain alkyl and vinyl to prepare a platinum-a, w-di (n-octyl) polymethylvinylsiloxane complex; to increase the catalytic activity of the platinum-vinylsiloxane complex.
In some embodiments, the inhibitor is an inhibitor of catalytic reaction of alkynol, so that the inhibitor of alkynol has a lower boiling point and can be volatilized more rapidly in the preparation process. For example, the inhibitor may be one of phenylacetylene, 1-ethynyl-1-cyclohexanol, tetramethyltetravinylcyclotetrasiloxane, 2-methyl-3-butynyl-2-ol, 3-methyl-1-ethynyl-3-ol, 3, 5-dimethyl-1-hexynyl-3-ol, 3-methyl-1-dodecynyl-3-ol, or any combination thereof.
In some embodiments, the coupling agent is at least one of r-glycidoxypropyltrimethoxysilane, r-methacryloxypropyltrimethoxysilane. Preferably, in order to ensure cost performance, the coupling agent is r-glycidoxypropyltrimethoxysilane.
In some embodiments, the dilution solvent may be selected from one or more of toluene, xylene, ethyl acetate; in order to ensure cost performance and reduce the toxicity of the raw materials, the raw materials are preferably mixed by toluene, xylene and ethyl acetate; more preferably, toluene and ethyl acetate are mixed.
The invention also relates to a method for preparing the adhesive of the silica gel protective film attached to the cambered glass, which comprises the following steps:
adding a solvent and polysiloxane containing vinyl into a reaction kettle, and stirring at normal temperature for 1 hour to obtain a silicone rubber dispersion liquid;
and (3) adding a cross-linking agent, an inhibitor, a coupling agent and a catalyst into the dispersion liquid in sequence, and fully and uniformly mixing to obtain the adhesive. The adhesive is simple in preparation method and convenient to produce and use; the adhesive provided by the invention has good normal-temperature storability and high curing speed, and can be completely cured within 30-60 seconds. In addition, compared with other adhesive preparation methods, the method greatly shortens the adhesive preparation time (1-2 h), and the cured using layer adhesive surface is stable and does not need heat sealing.
The invention also relates to an adhesive tape comprising at least: the adhesive layer is arranged on the substrate layer; coating the adhesive layer on one surface or two surfaces of the substrate layer; the adhesive layer is obtained by curing the adhesive prepared by the preparation method disclosed above at 160 ℃ for 30S-60S. The adhesive tape prepared by the invention has more stable peeling force and adjustable viscosity range, and is convenient to adapt to glass with different radians. In addition, the product has good flexibility for the finished product with higher thickness.
Example one
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 2); after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 1.0 part of coupling agent and 1.0 part of platinum catalyst, and stirring uniformly to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 25um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape. And then the adhesive tape is attached to the cambered surface mobile phone screen.
Example two
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 1); after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 1.0 part of coupling agent and 1.0 part of platinum catalyst, and stirring uniformly to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 25um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape.
EXAMPLE III
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 2); after complete dissolution, adding 0.1 part of reaction inhibitor, 0.6 part of cross-linking agent, 1.0 part of coupling agent and 1.0 part of platinum catalyst, and uniformly stirring to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 25um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape.
Example four
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 2); after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 0.5 part of coupling agent and 1.0 part of platinum catalyst, and uniformly stirring to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 25um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form an adhesive tape.
EXAMPLE five
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 2); after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 1.0 part of coupling agent and 1.5 parts of platinum catalyst, and uniformly stirring to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 25um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape.
Comparative example 1
Mixing 100 parts of vinyl-containing polysiloxane (a: B = 2); after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 1.0 part of coupling agent and 1.0 part of platinum catalyst, and stirring uniformly to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 36um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape. The adhesive tape is attached to the cambered surface mobile phone screen.
Comparative example No. two
Taking 100 parts of polysiloxane containing vinyl (A: B =2: 1) and 150 parts of diluting solvent, stirring and mixing to obtain a dispersion liquid; after complete dissolution, adding 0.1 part of reaction inhibitor, 1.5 parts of cross-linking agent, 1.0 part of coupling agent and 1.0 part of platinum catalyst, and uniformly stirring to form an adhesive; the adhesive is coated on a PET substrate with the thickness of 50um, the thickness of the coated adhesive is 15um, and the coated adhesive is baked for 2min at 160 ℃ to form the adhesive tape. The adhesive tape is attached to the cambered surface mobile phone screen.
The performance tests were performed on examples one to five and comparative examples one to two, and the test results are shown below.
Table 1 table of the test results of the adhesive tape properties corresponding to different adhesives
From the comparison of example one and example two it can be seen that: A. different ratios of the two types of polysiloxane B can be used for adjusting the tape peeling force.
As can be seen from the comparison of example one and example three: a reduction in the amount of crosslinking agent leads to a softening of the glue with a slight increase in the peel force.
As can be seen from a comparison of example one and example four: the amount of the coupling agent is reduced, and the coupling agent is beneficial to increasing the adhesiveness of the adhesive film in a boiling test NG.
As can be seen from the comparison of example one and example five: the curing speed is obviously improved by increasing the amount of the catalyst.
Meanwhile, the experimental phenomena of the first embodiment, the first comparative embodiment and the second comparative embodiment show that the thinning of the coated base material is beneficial to the better attaching performance of the adhesive tape to the glass, and the attaching degree can be greatly influenced by the base material with the thickness of more than 50 micrometers.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of adaptation of the invention, and further modifications can be easily implemented by those skilled in the art, so that the invention is not limited to the specific details and the examples shown herein, without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The adhesive for the silica gel protective film attached to the cambered glass is characterized by comprising the following raw materials in parts by weight:
vinyl-containing polysiloxane A and vinyl-containing polysiloxane B, wherein the total amount of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane is 100 parts; further comprising:
2. the adhesive for adhering the silica gel protective film of the glass arc according to claim 1, wherein the weight ratio of the vinyl-containing polysiloxane A to the vinyl-containing polysiloxane B is 2.
3. The adhesive for the silicone protective film applied to the cambered glass according to claim 1, wherein the structural general formulas of the vinyl-containing polysiloxane A and the vinyl-containing polysiloxane B are as follows:
R b Me (3-b) SiO(SiMe 2 O)n(SiMe (2-a) ViaO)mSiMe (3-b) R b wherein R is vinyl; m and n are positive integers, and the weight average molecular weight of the polysiloxane is 450000-650000; a is an integer of 0 to 2, and b is an integer of 1 to 3.
4. The adhesive for the silicone protective film applied to the cambered glass according to claim 3, wherein the weight average molecular weight of the vinyl-containing polysiloxane A is between 60 and 65 ten thousand, and the weight average molecular weight of the vinyl-containing polysiloxane B is between 45 and 50 ten thousand.
5. The adhesive for adhering the glass-arc silicone protective film according to claim 1, wherein the crosslinking agent is silicone oil containing a silicon hydrogen (SiH) group, and the molecular structure of the adhesive is:
(CH3) 3 SiO[(CH3) 2 SiO]m[(CH3)(H)SiO]nSi(CH3) 3 ；
wherein the mass percent of H is 1.0-1.2%; the cross-linking agent has a viscosity of 30-100mpa.s at 25 ℃.
6. The adhesive for sticking the silica gel protective film of the glass arc according to claim 1, wherein the platinum content in the platinum catalyst is 3000ppm to 4000ppm.
7. The adhesive for sticking the silica gel protective film of the arc glass according to claim 1 or 6, wherein the platinum catalyst is a catalyst of a platinum-a, w-di (n-octyl) polymethylvinylsiloxane complex.
8. The adhesive for adhering to the silica gel protective film of the glass arc according to claim 1, wherein the coupling agent is at least one of r-glycidoxypropyltrimethoxysilane and r-methacryloxypropyltrimethoxysilane.
9. The method for preparing the adhesive for the silica gel protective film attached to the cambered glass in the claim 1 is characterized by comprising the following steps:
adding a solvent and polysiloxane containing vinyl into a reaction kettle, and stirring at normal temperature for 1 hour to obtain a silicon rubber dispersion liquid;
and (3) adding a cross-linking agent, an inhibitor, a coupling agent and a catalyst into the dispersion liquid in sequence, and fully and uniformly mixing to obtain the adhesive.
10. Adhesive tape, characterized in that it comprises at least: a substrate layer and the adhesive layer of claim 1; the adhesive layer is coated on one surface or two surfaces of the base material layer.
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| CN116285877A (en) * | 2023-04-12 | 2023-06-23 | 江苏斯迪克新材料科技股份有限公司 | Acid-base-resistant organic silicon pressure-sensitive adhesive, preparation method thereof and protective film material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196374A (en) * | 2022-01-13 | 2022-03-18 | 万华化学集团股份有限公司 | high-AF (AF) screen adhesion force organic silicon pressure-sensitive adhesive suitable for general curing of TPU (thermoplastic polyurethane) film, preparation method and application thereof |
-
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196374A (en) * | 2022-01-13 | 2022-03-18 | 万华化学集团股份有限公司 | high-AF (AF) screen adhesion force organic silicon pressure-sensitive adhesive suitable for general curing of TPU (thermoplastic polyurethane) film, preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285877A (en) * | 2023-04-12 | 2023-06-23 | 江苏斯迪克新材料科技股份有限公司 | Acid-base-resistant organic silicon pressure-sensitive adhesive, preparation method thereof and protective film material |
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