CN115073744B - High-cohesiveness silicon rubber and preparation method thereof - Google Patents
High-cohesiveness silicon rubber and preparation method thereof Download PDFInfo
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- CN115073744B CN115073744B CN202210684519.0A CN202210684519A CN115073744B CN 115073744 B CN115073744 B CN 115073744B CN 202210684519 A CN202210684519 A CN 202210684519A CN 115073744 B CN115073744 B CN 115073744B
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- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004945 silicone rubber Substances 0.000 claims abstract description 38
- 229920002545 silicone oil Polymers 0.000 claims abstract description 34
- 239000004593 Epoxy Substances 0.000 claims abstract description 26
- 229920001558 organosilicon polymer Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 15
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 125000003944 tolyl group Chemical group 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 32
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 125000000217 alkyl group Chemical group 0.000 abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 4
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007259 addition reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of 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; Compositions of derivatives of such polymers
- C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
-
- 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
- C09J183/10—Block or graft copolymers containing polysiloxane sequences
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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
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2383/10—Block- or graft-copolymers containing polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/05—Polysiloxanes containing silicon bound to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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Abstract
The invention relates to high-cohesiveness silicon rubber and a preparation method thereof, and relates to the technical field of rubber. The organosilicon base resin is 665 modified organosilicon polymer, and the structural formula is shown in formula 1. The silicone rubber is a double-component addition type silicone rubber, and comprises a component A and a component B; 30-80 parts of component A is prepared by mixing 30-50 parts of methyl vinyl silicone oil and 30-80 parts of 665 modified organosilicon polymer; the component B is prepared by taking 10 to 50 parts of Pt as a main catalyst and 10 to 30 parts of hydrogen-containing organic silicone oil according to a proportion; the weight ratio of the component A to the component B is 100:100. The invention also provides a preparation method of the organosilicon matrix resin and the silicone rubber. According to the invention, a large number of structures such as hydroxyl, phenyl, alkyl and the like are introduced into the molecular structure of the commercial organosilicon epoxy 665 by an epoxy modified organosilicon matrix resin method, so that the adhesive property of the silicone rubber obtained by the matrix resin is obviously improved.
Description
Technical Field
The invention relates to the technical field of rubber, in particular to high-cohesiveness silicon rubber and a preparation method thereof.
Background
Silicone rubber is an elastomer material with a three-dimensional network structure formed after a linear polysiloxane is subjected to a crosslinking reaction. Because of the unique organic-inorganic hybrid molecular chain structure, silicone rubber can be classified into three types according to vulcanization mechanism: room temperature vulcanizing type, heating vulcanizing type and addition reaction type. Wherein, the addition reaction type silicon rubber can be used for a long time within the temperature range of-65 ℃ to 200 ℃, can keep the soft and elastic performance, has excellent electrical performance and chemical stability, and has weather resistance, water resistance and ozone resistance; the non-toxic, odorless, non-corrosive, physiologically inert, low linear shrinkage and easy operation, and is widely applied to the fields of military, building, medical treatment, automobiles, aerospace, daily chemicals, articles for daily use and the like.
However, silicone rubber itself has low strength and poor adhesion after curing, so that there are many limitations in its use as a sealing material or a composite material. The traditional silicone rubber solves the problems of ablation resistance and cohesiveness of the silicone rubber through compounding. At present, the report of adjusting the cohesiveness through a body structure is not very common.
Disclosure of Invention
The invention aims to provide high-cohesiveness silicon rubber and a preparation method thereof. According to the invention, a large number of structures such as hydroxyl, phenyl, alkyl and the like are introduced into the molecular structure of the commercial organosilicon epoxy 665 by an epoxy modified organosilicon matrix resin method, so that the adhesive property of the silicone rubber obtained by the matrix resin is obviously improved.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the invention provides an organosilicon base resin which is 665 modified organosilicon polymer and is obtained by reacting commercial organosilicon epoxy 665 with commercial organosilicon oil, wherein the structural formula is shown in formula 1:
the structural formula of the organosilicon epoxy 665 is as follows:
the structural formula of the organic silicone oil is as follows:
the molecular weight of the organosilicon base resin shown in the formula 1 is 8000-55000.
The invention also provides a preparation method of the organosilicon matrix resin, which comprises the following steps:
after the commercial organosilicon epoxy 665 is dissolved in an organic solvent, adding commercial organosilicon oil into the organic solvent to react, and obtaining 665 modified organosilicon polymer shown in the formula 1 after the reaction is finished;
the reaction formula is as follows:
。
preferably, the organic solvent is toluene.
Preferably, the reaction temperature is 80℃and the time is 8 hours.
It is further preferable that one specific embodiment of the method for preparing a silicone base resin is:
dissolving commercially available organosilicon epoxy 665 into toluene, slowly heating to 50 ℃, slowly adding commercially available organosilicon oil at 50 ℃, heating to 80 ℃ for reaction for 8 hours, regulating the pH value of the system to be neutral, and distilling under reduced pressure to remove toluene to obtain 665 modified organosilicon polymer shown in formula 1.
The invention also provides high-cohesiveness silicon rubber which is double-component addition type silicon rubber, comprising a component A and a component B;
30-80 parts of component A is prepared by mixing 665 modified organosilicon polymer shown in the formula 1 of the invention with 30-50 parts of methyl vinyl silicone oil;
the component B is prepared by 10 to 50 parts of Pd catalyst and 10 to 30 parts of hydrogen-containing organic silicone oil;
the weight ratio of the component A to the component B is 100:100.
Preferably, the silicone rubber comprises a component A and a component B;
the component A is prepared by mixing 60-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil;
the component B is prepared by 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil.
Preferably, the silicone rubber comprises a component A and a component B;
the component A is prepared by mixing 70-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil;
the component B is prepared by 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil.
The invention also provides a preparation method of the high-cohesiveness silicon rubber, which comprises the following steps:
and (3) uniformly mixing A, B components, putting the mixture into a die, pressurizing at 160+/-10 ℃ for 5-10 MPa, and vulcanizing for 20-30 min to obtain the addition type high-cohesiveness silicon rubber sheet.
Preferably, the thickness of the prepared silicone rubber sheet is 3.2mm.
The beneficial effects of the invention are as follows:
according to the invention, a large number of structures such as hydroxyl, phenyl, alkyl and the like are introduced into the molecular structure of the commercial organosilicon epoxy 665 by an epoxy modified organosilicon matrix resin method, so that the adhesive property of the silicone rubber obtained by the matrix resin is obviously improved.
Detailed Description
The invention provides an organosilicon base resin which is 665 modified organosilicon polymer and is obtained by reacting commercial organosilicon epoxy 665 with commercial organosilicon oil, wherein the structural formula is shown in formula 1:
the structural formula of the organosilicon epoxy 665 is as follows:
the structural formula of the organic silicone oil is as follows:
the molecular weight of the organosilicon base resin shown in the formula 1 is 8000-55000.
The invention also provides a preparation method of the organosilicon matrix resin, which comprises the following steps:
after the commercially available silicone epoxy 665 is dissolved in an organic solvent, a commercially available silicone oil is added thereto to perform a reaction, and after the reaction is completed, a 665 modified silicone polymer represented by formula 1 is obtained.
The reaction formula is as follows:
in the above preparation method of the present invention, the organic solvent is toluene.
In the preparation method of the invention, the reaction temperature is 80 ℃ and the reaction time is 8 hours.
One specific embodiment of the preparation method of the invention is as follows:
dissolving commercially available organosilicon epoxy 665 into toluene, slowly heating to 50 ℃, slowly adding commercially available organosilicon oil at 50 ℃, heating to 80 ℃ for reaction for 8 hours, regulating the pH value of the system to be neutral, and distilling under reduced pressure to remove toluene to obtain 665 modified organosilicon polymer shown in formula 1.
The invention also provides high-cohesiveness silicon rubber which is double-component addition type silicon rubber, comprising a component A and a component B; 30-80 parts of component A is prepared by mixing 30-50 parts of methyl vinyl silicone oil and 30-80 parts of 665 modified organosilicon polymer; the component B is prepared by 10 to 50 parts of Pd catalyst and 10 to 30 parts of hydrogen-containing organic silicone oil according to the proportion; the weight ratio of the component A to the component B is 100:100.
In the silicone rubber of the present invention, the silicone rubber: the component A is prepared by mixing 60-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil; the component B is prepared by 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil according to the proportion. Further the silicone rubber: the component A is prepared by mixing 70-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil; the component B is prepared by 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil according to the proportion.
The invention also provides a preparation method of the high-cohesiveness silicon rubber, which comprises the following steps:
and (3) uniformly mixing A, B components, putting the mixture into a die, pressurizing at 160+/-10 ℃ for 5-10 MPa, and vulcanizing for 20-30 min to obtain the 3.2 mm-thick addition type high-cohesiveness silicon rubber sheet.
According to the invention, a large number of structures such as hydroxyl, phenyl, alkyl and the like are introduced into the molecular structure of the organic silicon matrix resin by the method of epoxy modification of the organic silicon matrix resin, so that the adhesive property of the silicone rubber is improved.
Examples preparation of organosilicon matrix resins
According to the molar ratio of the organosilicon epoxy 665 to the organosilicon oil of 1:2, dissolving the organosilicon epoxy 665 in toluene, slowly heating to 50 ℃, slowly adding the organosilicon oil at 50 ℃, heating to 80 ℃ for reaction for 8 hours, regulating the pH value of the system to be neutral, and distilling under reduced pressure to remove the toluene to obtain the 665 modified organosilicon polymer shown in the formula 1.
The reaction formula is as follows:
specific example 1:
the preparation method of the silicon rubber comprises the following steps:
the component A of the silicon rubber matrix comprises: 50 parts of 665 epoxy organosilicon polymer and 30 parts of methyl vinyl silicone oil;
the silicon rubber matrix B comprises the following components: the catalyst is prepared by mixing 20Pd catalyst with 10 parts of organic silicone oil with high hydrogen content 202;
100 parts of a silicone rubber matrix A component and 100 parts of a silicone rubber matrix B component are added into a three-roller grinder, ground and mixed for 10-15 minutes, then put into a die, pressurized at 160+/-10 ℃ for 5-10 MPa, vulcanized for 20-30 minutes, and finally the addition type high-cohesiveness silicone rubber sheet with the thickness of 3.2mm is obtained. The performance parameter testing methods refer to the national standard testing methods.
The specific performance is as follows:
specific example 2:
the preparation method of the silicon rubber comprises the following steps:
the component A of the silicon rubber matrix comprises: 60 parts of 665 epoxy organosilicon polymer and 30 parts of methyl vinyl silicone oil;
the silicon rubber matrix B comprises the following components: the catalyst 25Pd is mixed with 15 parts of organic silicone oil 202 with high hydrogen content;
100 parts of a silicone rubber matrix A component and 100 parts of a silicone rubber matrix B component are added into a three-roller grinder, ground and mixed for 10-15 minutes, then put into a die, pressurized at 160+/-10 ℃ for 5-10 MPa, vulcanized for 20-30 minutes, and finally the addition type high-cohesiveness silicone rubber sheet with the thickness of 3.2mm is obtained. The performance parameter testing methods refer to the national standard testing methods.
The specific performance is as follows:
specific example 3:
the preparation method of the silicon rubber comprises the following steps:
the component A of the silicon rubber matrix comprises: 80 parts of 665 epoxy organosilicon polymer and 40 parts of methyl vinyl silicone oil;
the silicon rubber matrix B comprises the following components: the catalyst is prepared by mixing 30Pd catalyst with 20 parts of organic silicone oil with high hydrogen content 202;
100 parts of a silicone rubber matrix A component and 100 parts of a silicone rubber matrix B component are added into a three-roller grinder, ground and mixed for 10-15 minutes, then put into a die, pressurized at 160+/-10 ℃ for 5-10 MPa, vulcanized for 20-30 minutes, and finally the addition type high-cohesiveness silicone rubber sheet with the thickness of 3.2mm is obtained. The performance parameter testing methods refer to the national standard testing methods.
The specific performance is as follows:
specific example 4:
the component A of the silicon rubber matrix comprises: 70 parts of 665 epoxy organosilicon polymer and 40 parts of methyl vinyl silicone oil;
the silicon rubber matrix B comprises the following components: the catalyst is prepared by mixing 30Pd catalyst with 20 parts of organic silicone oil with high hydrogen content 202;
100 parts of a silicone rubber matrix A component and 100 parts of a silicone rubber matrix B component are added into a three-roller grinder, ground and mixed for 10-15 minutes, then put into a die, pressurized at 160+/-10 ℃ for 5-10 MPa, vulcanized for 20-30 minutes, and finally the addition type high-cohesiveness silicone rubber sheet with the thickness of 3.2mm is obtained. The performance parameter testing methods refer to the national standard testing methods.
The specific performance is as follows:
specific example 5:
the component A of the silicon rubber matrix comprises: 70 parts of 665 epoxy organosilicon polymer and 30 parts of methyl vinyl silicone oil;
the silicon rubber matrix B comprises the following components: the catalyst is prepared by mixing 30Pd catalyst with 20 parts of organic silicone oil with high hydrogen content 202;
100 parts of a silicone rubber matrix A component and 100 parts of a silicone rubber matrix B component are added into a three-roller grinder, ground and mixed for 10-15 minutes, then put into a die, pressurized at 160+/-10 ℃ for 5-10 MPa, vulcanized for 20-30 minutes, and finally the addition type high-cohesiveness silicone rubber sheet with the thickness of 3.2mm is obtained. The performance parameter testing methods refer to the national standard testing methods.
The specific performance is as follows:
it is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. The organosilicon base resin is characterized in that the organosilicon base resin is 665 modified organosilicon polymer, and is obtained by reacting commercial organosilicon epoxy 665 with commercial organosilicon oil, and the structural formula is shown in formula 1:
the structural formula of the organosilicon epoxy 665 is as follows:
the structural formula of the organic silicone oil is as follows:
the molecular weight of the organosilicon base resin shown in the formula 1 is 8000-55000.
2. The method for producing a silicone base resin according to claim 1, comprising the steps of:
after the organic silicon epoxy 665 is dissolved in an organic solvent, adding organic silicon oil into the organic solvent to react, and obtaining 665 modified organic silicon polymer shown in a formula 1 after the reaction is finished;
the reaction formula is as follows:
。
3. the method according to claim 2, wherein the organic solvent is toluene.
4. The preparation method according to claim 2, wherein the reaction temperature is 80 ℃ and the reaction time is 8 hours.
5. The preparation method according to claim 2, wherein one specific embodiment is as follows:
after the organosilicon epoxy 665 is dissolved in toluene, the temperature is heated to 50 ℃, organosilicon oil is added at 50 ℃, the temperature is raised to 80 ℃ for reaction for 8 hours, the pH value of the system is regulated to be neutral, and then the toluene is removed by reduced pressure distillation, so that the 665 modified organosilicon polymer shown in the formula 1 can be obtained.
6. A high-cohesiveness silicon rubber is a double-component addition type silicon rubber, comprising a component A and a component B;
it is characterized in that the method comprises the steps of,
30-80 parts of component A is prepared by mixing 665 modified organosilicon polymer shown in the formula 1 in claim 1 with 30-50 parts of methyl vinyl silicone oil;
the component B is prepared by 10 to 50 parts of Pd catalyst and 10 to 30 parts of hydrogen-containing organic silicone oil;
the weight ratio of the component A to the component B is 100:100.
7. The silicone rubber according to claim 6, wherein,
the component A is prepared by mixing 60-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil;
the component B is prepared from 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil.
8. The silicone rubber according to claim 6, wherein the silicone rubber comprises a component a and a component B;
the component A is prepared by mixing 70-80 parts of 665 modified organosilicon polymer and 30-40 parts of methyl vinyl silicone oil;
the component B is prepared from 25 to 30 parts of Pd catalyst and 15 to 20 parts of hydrogen-containing organic silicone oil.
9. A method for preparing the high-adhesion silicone rubber according to any one of claims 6 to 8, comprising the steps of:
and (3) uniformly mixing A, B components, putting the mixture into a die, pressurizing at 160+/-10 ℃ for 5-10 MPa, and vulcanizing for 20-30 min to obtain the addition type high-cohesiveness silicon rubber sheet.
10. The method of claim 9, wherein the silicone rubber sheet is prepared to a thickness of 3.2mm.
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| CN101440268A (en) * | 2008-12-30 | 2009-05-27 | 黑龙江省科学院石油化学研究院 | Low temperature curing high temperature resistant inorganic / organic hybridization epoxy adhesive and preparation thereof |
| CN105176092A (en) * | 2015-10-27 | 2015-12-23 | 巨轮智能装备股份有限公司 | Preparation method for epoxy resin compound organic silicon thermal-insulation material |
| JP2018193505A (en) * | 2017-05-19 | 2018-12-06 | 信越化学工業株式会社 | Silicone-modified epoxy resin composition and semiconductor device |
| CN113004524A (en) * | 2019-12-20 | 2021-06-22 | 万华化学集团股份有限公司 | Epoxy-organic silicon resin and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101440268A (en) * | 2008-12-30 | 2009-05-27 | 黑龙江省科学院石油化学研究院 | Low temperature curing high temperature resistant inorganic / organic hybridization epoxy adhesive and preparation thereof |
| CN105176092A (en) * | 2015-10-27 | 2015-12-23 | 巨轮智能装备股份有限公司 | Preparation method for epoxy resin compound organic silicon thermal-insulation material |
| JP2018193505A (en) * | 2017-05-19 | 2018-12-06 | 信越化学工業株式会社 | Silicone-modified epoxy resin composition and semiconductor device |
| CN113004524A (en) * | 2019-12-20 | 2021-06-22 | 万华化学集团股份有限公司 | Epoxy-organic silicon resin and preparation method and application thereof |
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