CN112622370A - Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof - Google Patents
Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof Download PDFInfo
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- CN112622370A CN112622370A CN202011562456.9A CN202011562456A CN112622370A CN 112622370 A CN112622370 A CN 112622370A CN 202011562456 A CN202011562456 A CN 202011562456A CN 112622370 A CN112622370 A CN 112622370A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/28—Multiple coating on one surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
Abstract
The invention belongs to the technical field of hot-pressing buffer materials, and particularly relates to a silica gel glass fabric hot-pressing buffer material and a preparation method thereof, wherein the silica gel glass fabric hot-pressing buffer material comprises a liquid silica gel layer, a heat-conducting silica gel layer and a glass fabric coated with silane coupling agent on two surfaces, one surface of the dried glass fabric is coated with the liquid silica gel layer, and the other surface of the dried glass fabric is calendered and compounded with the heat-conducting silica gel layer; the liquid silica gel layer is a mixture of liquid silica gel, a heat-resistant agent and heat-conducting powder; the heat-conducting silica gel layer is obtained by filling solid silica gel with heat-conducting powder; the buffer material prepared by the invention is a unique synthetic elastomer prepared by silica gel polymer and high-strength glass fiber, perfectly combines the thermal property and elasticity of silica gel molecules and the unique toughness of fiber materials, has extremely high tear resistance and high pressure resistance and resilience, and can show excellent insulativity, high-speed heat transfer property and high-temperature resistance in extremely harsh application occasions.
Description
Technical Field
The invention relates to the technical field of hot-pressing buffer materials, and particularly relates to a silica gel glass fiber cloth hot-pressing buffer material and a preparation method thereof.
Background
The buffer materials mainly used in the bonding process of the current module panel factory include three materials, namely pure silica gel materials, silica gel and polyimide film composite materials, teflon and silica gel composite materials.
The pure silica gel hot-pressing buffer material has high friction coefficient but is not pressure-resistant, and the line changing frequency is high in the using process, so that the production cost is high;
polyimide, silica gel composite material and Teflon composite material can solve the problem of low pressing times, but due to the common characteristics of high price and extremely low surface smooth friction coefficient, the polyimide, silica gel composite material and Teflon composite material are easy to slide in the process of bonding and binding so that bonding deviation causes poor products, the polyimide, silica gel composite material and Teflon composite material are not suitable for production occasions with high temperature, high pressure and high frequency, and in order to solve the problems, the application provides a silica gel glass fiber cloth hot-pressing buffer material and a preparation method thereof.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a silica gel glass fabric hot-pressing buffer material and a preparation method thereof, and the silica gel glass fabric hot-pressing buffer material has the characteristics of strong aging resistance and tearing resistance in hot pressing in a severe production environment.
(II) technical scheme
In order to solve the problems, the invention provides a silica gel glass fabric hot-pressing buffer material which comprises a liquid silica gel layer, a heat-conducting silica gel layer and glass fabric coated with silane coupling agent on two surfaces, wherein after the glass fabric is dried, the liquid silica gel layer is coated on one surface, and the heat-conducting silica gel layer is compounded on the other surface in a rolling way;
the liquid silica gel layer is a mixture of liquid silica gel, a heat-resistant agent and heat-conducting powder;
the heat-conducting silica gel layer is obtained by filling solid silica gel with heat-conducting powder;
the liquid silica gel layer comprises the following raw materials in parts by weight:
80-85 parts of liquid silica gel,
5 parts of heat-resistant agent, and
10-15 parts of heat conducting powder;
the heat-conducting silica gel layer comprises the following raw materials in parts by weight:
100 parts of solid silica gel, and
100 portions and 300 portions of heat conducting powder.
Preferably, a platinum curing agent is added into the liquid silica gel.
Preferably, the heat conducting powder is alumina.
Preferably, the shore hardness of the solid silica gel is 50-80 degrees.
Preferably, the heat conductivity coefficient of the heat-conducting silica gel layer is 0.9-1.1W/m.degree.
Preferably, the thickness of the glass fiber cloth is 0.015-0.05 mm.
Preferably, the thickness of the liquid silica gel layer is 0.05-0.1 mm.
Preferably, the thickness of the heat-conducting silica gel layer is 0.1-0.35 mm.
Preferably, the silane coupling agent is diluted with 1 to 3 times of a diluent.
The invention also provides a preparation method of the silica gel glass fiber cloth hot-pressing buffer material, which comprises the following steps:
(1) stirring and mixing liquid silica gel: adding a heat-resistant agent in a certain proportion into the liquid silica gel, adding a certain amount of heat-conducting powder according to the actually required heat-conducting coefficient, and uniformly stirring to obtain A for later use;
(2) solid silica gel modified heat-conducting silica gel: filling heat-conducting powder into the solid silica gel by using an internal mixer under the conditions that the temperature is 30-45 ℃ and the pressure is 10-15KPa, and ensuring that the heat conductivity coefficient of the solid silica gel filled with the heat-conducting powder is within the range of 0.9-1.1W/m.DEG, thus obtaining B for later use;
(3) surface treatment of glass fiber cloth: coating silane coupling agents on two surfaces of the glass fiber cloth, baking for 3-15 minutes at a high temperature of 150 ℃, and drying to obtain C for later use;
(4) liquid silica gel blade coating: coating the obtained A on one surface of the C, baking for 15-30 minutes at the temperature of 150-220 ℃, and curing and forming to obtain D for later use;
(5) compounding heat-conducting silica gel: and compounding the other surface of the obtained D with the B by using a calender to obtain the cushion material.
The hot-pressing buffer material prepared by the technical scheme of the invention has the following beneficial technical effects:
the buffer material prepared by the invention is a unique synthetic elastomer prepared by silica gel polymer and high-strength glass fiber, perfectly combines the thermal property and elasticity of silica gel molecules and the unique toughness of fiber materials, has extremely high tear resistance and high pressure resistance and resilience, and can show excellent insulativity, high-speed heat transfer property and high-temperature resistance in extremely harsh application occasions; the hot pressing head has the advantages of high restoring force, release property, low friction, no powder on the surface, no oil seepage, no damage to IC, FPC, glass and other hot pressing products, no influence on the flatness of the hot pressing head due to residual impurities generated by the hot pressing head, aging resistance and tearing resistance, and is particularly suitable for normal use in severe production environments (high temperature, oil resistance, high strength and high frequency).
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a drawing of a liquid silica gel knife coating process of the present invention;
FIG. 3 is a process diagram of compounding the heat conductive silica gel of the present invention;
wherein: 1. glass fiber cloth; 2. a liquid silica gel layer; 3. and a heat-conducting silica gel layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example one
As shown in fig. 1, the silica gel glass fiber cloth hot-pressing buffer material provided by the invention comprises a liquid silica gel layer, a heat-conducting silica gel layer and glass fiber cloth coated with silane coupling agents on two surfaces, wherein the silane coupling agents facilitate the two surfaces of the glass fiber cloth to be better attached to the silica gel layer so as to prevent delamination; the silane coupling agent is diluted in advance by using 2 times of diluent, so that the fluidity of the silane coupling agent can be increased after dilution, and the silane coupling agent is convenient to uniformly coat; the thickness of the glass fiber cloth is 0.015mm, one side of the glass fiber cloth is coated with a liquid silica gel layer after being dried, and the other side of the glass fiber cloth is calendered and compounded with a heat-conducting silica gel layer;
in the embodiment, the liquid silica gel layer is a mixture of liquid silica gel, a heat-resistant agent and alumina, wherein a platinum curing agent is added in the liquid silica gel, so that the liquid silica gel can be cured better, the heat-resistant agent can be a silicone rubber high-temperature-resistant synergist and is used for improving the heat resistance of the silica gel layer, the thickness of the liquid silica gel layer is 0.05mm, the heat-conducting powder is preferably alumina, and the liquid silica gel layer has good heat conductivity, moderate price and convenient operation;
in this embodiment, the heat-conducting silica gel layer is formed by filling alumina with solid silica gel, the shore hardness of the solid silica gel is 65 degrees, the solid silica gel with the shore hardness of 50-80 degrees can ensure the buffer performance and the compression resistance of a product, the heat-conducting coefficient of the heat-conducting silica gel layer is 1.1 watt/meter.degree, the use requirement of the product can be met, the thickness is 0.1mm, the thickness of the heat-conducting silica gel layer is required to be kept within the range of 0.1-0.35mm, so as to ensure the heat transfer performance of the product, and if the material thickness is too thick, the heat-conducting performance is greatly reduced, so that the use effect of the product is affected;
in this embodiment, the liquid silica gel layer is prepared from the following raw materials by weight:
800g of liquid silica gel is prepared by mixing liquid silica gel,
50g of a heat-resistant agent, and
100g of alumina;
the heat conduction silica gel layer comprises the following raw materials in parts by weight:
1000g of solid silica gel, and
3000g of alumina.
Example two
As shown in fig. 2-3, the preparation method of the silica gel glass fiber cloth hot-pressing buffer material provided by the invention comprises the following steps:
(1) stirring and mixing liquid silica gel: adding 50g of heat-resistant agent into 800g of liquid silica gel, adding 100g of alumina, putting the mixture into a vacuum stirrer, stirring for 20 minutes at the rotating speed of 600r/min, and uniformly stirring to obtain A for later use;
(2) solid silica gel modified heat-conducting silica gel: filling 3000g of alumina into 1000g of solid silica gel by using an internal mixer under the conditions that the temperature is 35 ℃ and the pressure is 12KPa, wherein the thermal conductivity coefficient of the solid silica gel filled with the alumina is 1.1W/m.DEG, and obtaining B for later use;
(3) surface treatment of glass fiber cloth: coating silane coupling agents on two surfaces of 0.015mm thick glass fiber cloth by using coating equipment, wherein the silane coupling agents are diluted by 2 times of diluent in advance, enter an oven through a guide wheel after coating, are baked for 10 minutes at a high temperature of 150 ℃, and are dried to obtain C for later use;
(4) liquid silica gel blade coating: coating the obtained A on one surface of the C by using a scraper, entering an oven through a guide wheel after blade coating, baking for 25 minutes at the temperature of 200 ℃, and curing and forming to obtain D for later use;
(5) compounding heat-conducting silica gel: and compounding the other surface of the obtained D with the B by using a calender to obtain the cushion material.
The following is a comparison of the characteristics of the cushion material in the first embodiment with the characteristics of the common cushion material in the market:
therefore, the cushioning material obtained by the preparation method of the second embodiment is a unique synthetic elastomer made of a silica gel polymer and high-strength glass fibers, and perfectly combines the thermal property and elasticity of silica gel molecules and the unique toughness of fiber materials, and compared with the common cushioning materials in the market at present, the cushioning material has stronger high-temperature resistance and pressure resistance, so that the replacement frequency of the cushioning material is reduced, the production cost is reduced, the temperature uniformity of the product is good, the temperature can be controlled within the range of less than or equal to 1 ℃, the temperature of other products in the market is generally about 3 ℃, and the product can meet the requirements of many super-harsh application occasions.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The silica gel glass fabric hot-pressing buffer material is characterized by comprising a liquid silica gel layer (2), a heat-conducting silica gel layer (3) and glass fabric (1) with two surfaces coated with silane coupling agents, wherein the liquid silica gel layer (2) is coated on one surface of the dried glass fabric (1), and the heat-conducting silica gel layer (3) is calendered and compounded on the other surface;
the liquid silica gel layer (2) is a mixture of liquid silica gel, a heat-resistant agent and heat-conducting powder;
the heat-conducting silica gel layer (3) is obtained by filling solid silica gel with heat-conducting powder;
the liquid silica gel layer (2) comprises the following raw materials in parts by weight:
80-85 parts of liquid silica gel,
5 parts of heat-resistant agent, and
10-15 parts of heat conducting powder;
the heat-conducting silica gel layer (3) is prepared from the following raw materials in parts by weight:
100 parts of solid silica gel, and
100 portions and 300 portions of heat conducting powder.
2. The silica gel fiberglass cloth hot-pressing buffer material as claimed in claim 1, wherein a platinum curing agent is added into the liquid silica gel.
3. The silica gel fiberglass cloth hot-pressing buffer material as claimed in claim 1, wherein the heat conducting powder is alumina.
4. The silica gel fiberglass cloth hot-pressing buffer material as claimed in claim 1, wherein the shore hardness of the solid silica gel is 50-80 degrees.
5. The silica gel glass fiber cloth hot-pressing buffer material as claimed in claim 1, wherein the heat conductivity coefficient of the heat conductive silica gel layer (3) is 0.9-1.1 w/m-degree.
6. The silica gel glass fiber cloth hot-pressing buffer material as claimed in claim 1, wherein the thickness of the glass fiber cloth (1) is 0.015-0.05 mm.
7. The silica gel fiberglass cloth hot-pressing buffer material as claimed in claim 1, wherein the thickness of the liquid silica gel layer (2) is 0.05-0.1 mm.
8. The silica gel glass fiber cloth hot-pressing buffer material as claimed in claim 1, wherein the thickness of the heat-conducting silica gel layer (3) is 0.1-0.35 mm.
9. The silica gel fiberglass cloth hot-pressing buffer material as claimed in claim 1, wherein the silane coupling agent is diluted by 1-3 times of diluent.
10. A method for preparing a silica gel fiberglass cloth hot-pressing buffer material as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
(1) stirring and mixing liquid silica gel: adding a heat-resistant agent in a certain proportion into the liquid silica gel, adding a certain amount of heat-conducting powder according to the actually required heat-conducting coefficient, and uniformly stirring to obtain A for later use;
(2) solid silica gel modified heat-conducting silica gel: filling heat-conducting powder into the solid silica gel by using an internal mixer under the conditions that the temperature is 30-45 ℃ and the pressure is 10-15KPa, and ensuring that the heat conductivity coefficient of the solid silica gel filled with the heat-conducting powder is within the range of 0.9-1.1W/m.DEG, thus obtaining B for later use;
(3) surface treatment of glass fiber cloth: coating silane coupling agents on two surfaces of the glass fiber cloth, baking for 3-15 minutes at a high temperature of 150 ℃, and drying to obtain C for later use;
(4) liquid silica gel blade coating: coating the obtained A on one surface of the C, baking for 15-30 minutes at the temperature of 150-220 ℃, and curing and forming to obtain D for later use;
(5) compounding heat-conducting silica gel: and compounding the other surface of the obtained D with the B by using a calender to obtain the cushion material.
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| CN202011562456.9A CN112622370A (en) | 2020-12-25 | 2020-12-25 | Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof |
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| CN202011562456.9A CN112622370A (en) | 2020-12-25 | 2020-12-25 | Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622199A (en) * | 2021-08-18 | 2021-11-09 | 郑州宇佳汽车用品有限公司 | Solid silica gel leather and preparation method thereof |
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| CN103342896A (en) * | 2013-06-26 | 2013-10-09 | 苏州天脉导热科技有限公司 | High temperature resistant heat-conducting silica gel sheet and preparation method thereof |
| CN104497574A (en) * | 2014-12-10 | 2015-04-08 | 深圳市博恩实业有限公司 | Multifunctional organic silicon thermal interface material |
| CN106398219A (en) * | 2016-08-31 | 2017-02-15 | 昆山市硕鸿电子材料有限公司 | Low-hardness damping silicone buffer material and preparation method thereof |
| CN107471783A (en) * | 2017-07-25 | 2017-12-15 | 苏州中垒新材料科技有限公司 | A kind of hot pressing buffer substrate tablet and preparation method thereof |
| CN108219474A (en) * | 2017-12-21 | 2018-06-29 | 东莞市汉品电子有限公司 | A kind of glass-fiber-fabric enhances heat-conducting silica gel sheet |
| CN108366511A (en) * | 2018-01-23 | 2018-08-03 | 苏州矽美科导热科技有限公司 | A kind of heat-conducting pad and preparation method thereof |
| CN108949056A (en) * | 2018-07-17 | 2018-12-07 | 德阳中碳新材料科技有限公司 | A kind of preparation method of heat-conducting interface material and products thereof |
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| CN113622199A (en) * | 2021-08-18 | 2021-11-09 | 郑州宇佳汽车用品有限公司 | Solid silica gel leather and preparation method thereof |
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