CN112778767A - High-temperature-resistant asphalt heat-conducting gasket and preparation method thereof - Google Patents

High-temperature-resistant asphalt heat-conducting gasket and preparation method thereof Download PDF

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Publication number
CN112778767A
CN112778767A CN202011591038.2A CN202011591038A CN112778767A CN 112778767 A CN112778767 A CN 112778767A CN 202011591038 A CN202011591038 A CN 202011591038A CN 112778767 A CN112778767 A CN 112778767A
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parts
hydrogen
silicone oil
temperature
vinyl
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Inventor
万炜涛
王红玉
陈田安
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Shenzhen Darbond Interface Materials Co ltd
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Shenzhen Darbond Interface Materials Co ltd
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    • 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
    • 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
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment
    • 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
    • C08J2383/04—Polysiloxanes
    • C08J2383/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
    • C08K5/24—Derivatives of hydrazine
    • C08K5/25—Carboxylic acid hydrazides

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Sealing Material Composition (AREA)

Abstract

The invention discloses a high-temperature-resistant asphalt heat-conducting gasket which comprises the following components in parts by weight: 100 parts of vinyl silicone oil, 1-5 parts of low-hydrogen silicone oil, 1-5 parts of high-hydrogen silicone oil, 1-3 parts of platinum catalyst, 2-4 parts of capsule platinum catalyst, 0.2-0.4 part of vinyl double-sealing head, 0.2-0.5 part of hydrogen double-sealing head, 500 parts of aluminum hydroxide 300, 500 parts of aluminum oxide 300, 5-10 parts of zinc oxide and 10240.05-0.07 part of antioxidant. The invention has the beneficial effects that: the invention provides a high-temperature-resistant asphalt heat-conducting gasket through molecular design, and the high-temperature-resistant asphalt heat-conducting gasket coexists with asphalt at the temperature of 120-150 ℃, and the hardness and the strength of the product are not obviously reduced after 1000 hours of aging test.

Description

High-temperature-resistant asphalt heat-conducting gasket and preparation method thereof
Technical Field
The invention relates to a heat-conducting gasket, in particular to a high-temperature-resistant asphalt heat-conducting gasket and a preparation method thereof.
Background
The heat conducting gasket can show different characteristics under different use environments. The common heat conducting gasket is contacted with the radiator, and the performance is stable and reliable in a long-term use state. However, in the asphalt environment, the temperature may reach 150 ℃, and the mechanical properties of some products are gradually reduced, like mud, and the stability of the products is seriously influenced.
The mechanical property reduction of the heat conducting gasket is directly related to the molecular structure. The polymer has fewer cross-linking points, and the chain scission is accelerated under the influence of high-temperature asphalt, and no new cross-linking point forms a new chemical bond; in addition, the active groups on the macromolecular chain segment are remained and are not completely reacted, so that the macromolecular chain segment still has reactivity at high temperature, and the aging process of the product is accelerated.
Disclosure of Invention
Aiming at the problems, the invention provides a high-temperature-resistant asphalt heat-conducting gasket which comprises the following components in parts by weight: 100 parts of vinyl silicone oil, 1-5 parts of low-hydrogen silicone oil, 1-5 parts of high-hydrogen silicone oil, 1-3 parts of platinum catalyst, 2-4 parts of capsule platinum catalyst, 0.2-0.4 part of vinyl double-sealing head, 0.2-0.5 part of hydrogen double-sealing head, 500 parts of aluminum hydroxide 300, 500 parts of aluminum oxide 300, 5-10 parts of zinc oxide and 10240.05-0.07 part of antioxidant.
Specifically, the vinyl silicone oil has a vinyl content of 0.1-0.5 wt%, a viscosity of 1000-3000mPa & s; the active hydrogen content of the low-hydrogen silicone oil is 0.15-0.2 wt%; the active hydrogen content of the high-hydrogen silicone oil is 0.6-1.0 wt%; the vinyl double-end socket is tetramethyldivinyl disiloxane, and the vinyl content is 27.5-30.0 wt%; the hydrogen-containing double end socket is tetramethyldihydro-disiloxane, and the hydrogen content is 1.3-1.5 wt%.
The invention has the beneficial effects that: the invention provides a high-temperature-resistant asphalt heat-conducting gasket through molecular design, which coexists with asphalt at the temperature of 120-150 ℃, and the hardness and the strength of the product are not obviously reduced after 1000h of aging test.
The preparation method of the high-temperature-resistant asphalt heat-conducting gasket comprises the following steps: weighing the components according to the parts by weight, adding vinyl silicone oil, low hydrogen silicone oil, high hydrogen silicone oil and platinum catalyst into a stirring kettle, stirring for 0.5h at the rotation speed of 30-35rpm, adding aluminum oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding zinc oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding aluminum hydroxide, stirring for 0.5h at the rotation speed of 15-20rpm, heating to 60 ℃, adding vinyl double end enclosures, vacuumizing after reacting for 10min to remove unreacted vinyl double end enclosures, adding hydrogen double end enclosures, vacuumizing after reacting for 10min to remove unreacted hydrogen double end enclosures, adding capsule platinum catalyst and antioxidant 1024, stirring for 0.5h at the rotation speed of 15-20rpm, pressing the mixture into sheets with the thickness of 2mm, and vulcanizing for 0.5h at the temperature of 125 ℃ to obtain the catalyst.
Detailed Description
The present invention is described below with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
A preparation method of a high-temperature-resistant asphalt heat-conducting gasket comprises the following steps: adding 100 parts of vinyl silicone oil, 1 part of low-hydrogen silicone oil, 1 part of high-hydrogen silicone oil and 1 part of catalyst into a stirring kettle, stirring for 0.5h at the rotation speed of 30-35rpm, adding 300 parts of aluminum oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 5 parts of zinc oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 300 parts of aluminum hydroxide, stirring for 0.5h at the rotation speed of 15-20rpm, heating to 60 ℃, adding 0.2 part of vinyl double end enclosure, reacting for 10min, vacuumizing to remove unreacted vinyl double end enclosure, adding 0.2 part of hydrogen double end enclosure, reacting for 10min, vacuumizing to remove unreacted hydrogen double end enclosure, adding 2 parts of encapsulated platinum catalyst and 0.05 part of antioxidant, stirring for 0.5h at the rotation speed of 15-20rpm, pressing the mixture into a sheet with the thickness of 2mm, and vulcanizing for 0.5h at the temperature of 125 ℃ to obtain the catalyst.
Example 2
A preparation method of a high-temperature-resistant asphalt heat-conducting gasket comprises the following steps: adding 100 parts of vinyl silicone oil, 5 parts of low-hydrogen silicone oil, 5 parts of high-hydrogen silicone oil and 3 parts of catalyst into a stirring kettle, stirring for 0.5h at the rotation speed of 30-35rpm, adding 500 parts of aluminum oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 10 parts of zinc oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 500 parts of aluminum hydroxide, stirring for 0.5h at the rotation speed of 15-20rpm, heating to 60 ℃, adding 0.4 part of vinyl double end enclosure, reacting for 10min, vacuumizing to remove unreacted vinyl double end enclosure, adding 0.5 part of hydrogen double end enclosure, reacting for 10min, vacuumizing to remove unreacted hydrogen double end enclosure, adding 4 parts of encapsulated platinum catalyst and 0.07 part of antioxidant, stirring for 0.5h at the rotation speed of 15-20rpm, pressing the mixture into a sheet with the thickness of 2mm, and vulcanizing for 0.5h at the temperature of 125 ℃ to obtain the catalyst.
Example 3
A preparation method of a high-temperature-resistant asphalt heat-conducting gasket comprises the following steps: adding 100 parts of vinyl silicone oil, 3 parts of low-hydrogen silicone oil, 2 parts of high-hydrogen silicone oil and 2 parts of catalyst into a stirring kettle, stirring for 0.5h at the rotation speed of 30-35rpm, adding 400 parts of aluminum oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 8 parts of zinc oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding 400 parts of aluminum hydroxide, stirring for 0.5h at the rotation speed of 15-20rpm, heating to 60 ℃, adding 0.3 part of vinyl double end enclosure, reacting for 10min, vacuumizing to remove unreacted vinyl double end enclosure, adding 0.3 part of hydrogen double end enclosure, reacting for 10min, vacuumizing to remove unreacted hydrogen double end enclosure, adding 3 parts of encapsulated platinum catalyst and 0.06 part of antioxidant, stirring for 0.5h at the rotation speed of 15-20rpm, pressing the mixture into a sheet with the thickness of 2mm, and vulcanizing for 0.5h at the temperature of 125 ℃ to obtain the catalyst.
The high temperature resistant asphalt heat conduction gasket obtained in examples 1 to 3 and a common gasket were subjected to related performance tests, and the results are shown in table 1.
TABLE 1
Figure BDA0002868636290000041
As shown in Table 1, the hardness of the high-temperature resistant asphalt gasket obtained by the invention is reduced by about 13%, and the tensile strength is reduced by about 10%, while the hardness of the common gasket is reduced by 100%, and the tensile strength is reduced by 80%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. The high-temperature-resistant asphalt heat-conducting gasket is characterized by comprising the following components in parts by weight: 100 parts of vinyl silicone oil, 1-5 parts of low-hydrogen silicone oil, 1-5 parts of high-hydrogen silicone oil, 1-3 parts of platinum catalyst, 2-4 parts of capsule platinum catalyst, 0.2-0.4 part of vinyl double-sealing head, 0.2-0.5 part of hydrogen double-sealing head, 500 parts of aluminum hydroxide 300, 500 parts of aluminum oxide 300, 5-10 parts of zinc oxide and 10240.05-0.07 part of antioxidant.
2. The high temperature resistant asphalt heat conduction gasket as claimed in claim 1, wherein the vinyl silicone oil has a vinyl content of 0.1-0.5 wt%, and a viscosity of 1000-3000mPa s.
3. The high-temperature-resistant asphalt heat-conducting gasket as claimed in claim 1, wherein the active hydrogen content of the low-hydrogen-containing silicone oil is 0.15-0.2 wt%.
4. The high-temperature-resistant asphalt heat-conducting gasket as claimed in claim 1, wherein the active hydrogen content of the high-hydrogen-containing silicone oil is 0.6-1.0 wt%.
5. The high temperature resistant asphalt heat conduction gasket as claimed in claim 1, wherein the vinyl double end socket is tetramethyldivinyldisiloxane, and the vinyl content is 27.5-30.0 wt%.
6. The high-temperature-resistant asphalt heat-conducting gasket as claimed in claim 1, wherein the hydrogen-containing double end socket is tetramethyldihydro-disiloxane, and the hydrogen content is 1.3-1.5 wt%.
7. A process according to any one of claims 1 to 6, characterized by the steps of: weighing the components according to the parts by weight, adding vinyl silicone oil, low hydrogen silicone oil, high hydrogen silicone oil and platinum catalyst into a stirring kettle, stirring for 0.5h at the rotation speed of 30-35rpm, adding aluminum oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding zinc oxide, stirring for 0.5h at the rotation speed of 15-20rpm, adding aluminum hydroxide, stirring for 0.5h at the rotation speed of 15-20rpm, heating to 60 ℃, adding vinyl double end enclosures, vacuumizing after reacting for 10min to remove unreacted vinyl double end enclosures, adding hydrogen double end enclosures, vacuumizing after reacting for 10min to remove unreacted hydrogen double end enclosures, adding capsule platinum catalyst and antioxidant 1024, stirring for 0.5h at the rotation speed of 15-20rpm, pressing the mixture into a sheet with the thickness of 2mm, and vulcanizing for 0.5h at the temperature of 125 ℃.
CN202011591038.2A 2020-12-29 2020-12-29 High-temperature-resistant asphalt heat-conducting gasket and preparation method thereof Pending CN112778767A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585757A (en) * 2011-12-28 2012-07-18 烟台德邦科技有限公司 Silica gel fin and preparation method thereof
CN105419343A (en) * 2015-12-18 2016-03-23 广州市白云化工实业有限公司 Printable or dispensing heat conducting gasket and preparing method thereof
CN107573696A (en) * 2017-09-26 2018-01-12 株洲时代新材料科技股份有限公司 A kind of high-power IGBT encapsulation high-temperature resistant silicone gel and its preparation method and application
CN107974090A (en) * 2017-12-21 2018-05-01 广东乐图新材料有限公司 Heat-conducting pad and preparation method thereof, electronic device
CN108129846A (en) * 2017-12-25 2018-06-08 张龙 A kind of high temperature resistant silicon sebific duct
CN111073300A (en) * 2019-12-13 2020-04-28 深圳市丰盛源科技有限公司 Heat-conducting gel easy to repair and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585757A (en) * 2011-12-28 2012-07-18 烟台德邦科技有限公司 Silica gel fin and preparation method thereof
CN105419343A (en) * 2015-12-18 2016-03-23 广州市白云化工实业有限公司 Printable or dispensing heat conducting gasket and preparing method thereof
CN107573696A (en) * 2017-09-26 2018-01-12 株洲时代新材料科技股份有限公司 A kind of high-power IGBT encapsulation high-temperature resistant silicone gel and its preparation method and application
CN107974090A (en) * 2017-12-21 2018-05-01 广东乐图新材料有限公司 Heat-conducting pad and preparation method thereof, electronic device
CN108129846A (en) * 2017-12-25 2018-06-08 张龙 A kind of high temperature resistant silicon sebific duct
CN111073300A (en) * 2019-12-13 2020-04-28 深圳市丰盛源科技有限公司 Heat-conducting gel easy to repair and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
章基凯 主编: "《有机硅材料》", 31 October 1999, 中国物资出版社 *

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