CN110218464A - Polymer, adhesive sheet and its preparation method and application - Google Patents
Polymer, adhesive sheet and its preparation method and application Download PDFInfo
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- CN110218464A CN110218464A CN201910581871.XA CN201910581871A CN110218464A CN 110218464 A CN110218464 A CN 110218464A CN 201910581871 A CN201910581871 A CN 201910581871A CN 110218464 A CN110218464 A CN 110218464A
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- polymer
- adhesive sheet
- liquid crystal
- thermotropic liquid
- crystal polymer
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
-
- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/12—Polymers characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- 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
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The present invention provides a kind of polymer, including thermotropic liquid crystal polymer, further include polytetrafluoroethylene (PTFE) and cagelike silsesquioxane；It is the mass fraction of the thermotropic liquid crystal polymer are as follows: 80-99% in terms of 100% by the total polymer mass score；The mass fraction of the polytetrafluoroethylene (PTFE) are as follows: 1-5%；The mass fraction of the cagelike silsesquioxane are as follows: 2-20%.The dielectric loss of polymer of the invention is low compared with prior art, is unlikely to deform, and water absorption rate is low, and mechanical strength is higher, while being also equipped with preferable heat resistance.Adhesive sheet of the invention has that dielectric loss is low, and good stability of the dimension, water absorption rate is low by the polymer, and mechanical strength with higher, while being also equipped with preferable heat-resisting, corrosion-resistant, anti-aging property.
Description
[technical field]
The present invention relates to polymer material fields, and in particular to a kind of polymer, adhesive sheet and its preparation method and application.
[background technique]
5G communication will replace 4G to become newest communication standard, compare 4G, and 5G communication various aspects all have superior
Performance, but to realize these performances, it be unable to do without the exploitation of corollary equipment.The wherein material of the various components in 5G communication apparatus
Material performance also needs further to develop accordingly, adapts to new demand.The basis of 5G technology is high-frequency low-consumption wiring board, this is just
(> 1GHz) low-loss dielectric material, the i.e. adhesive sheet of copper-clad plate and bonding copper-clad plate are needed under high frequency.It is same all kinds of logical
Interrogate the requirement of equipment with development be also it is higher and higher, adhesive sheet is also required to improve performance therewith as basic element, adapts to need
It asks.
Existing modified polymer material and the dielectric loss of the adhesive sheet of existing modified polymer material preparation are larger
It is unable to satisfy demand.
Therefore, it is necessary to provide a kind of adhesive sheet and preparation method thereof of low dielectric loss；In order to prepare the low dielectric
The adhesive sheet of loss, it is necessary to a kind of the polymer-modified of low dielectric loss is provided, as prepare gluing for the low dielectric loss
The raw material of contact pin.
[summary of the invention]
The purpose of the present invention is to provide a kind of polymer, adhesive sheet and preparation method thereof, to solve existing polymer
And the technical problem that adhesive sheet dielectric loss is high.
One aspect of the present invention provides a kind of polymer, including thermotropic liquid crystal polymer to solve the above-mentioned problems, also
Including polytetrafluoroethylene (PTFE) and cagelike silsesquioxane；
It is the mass fraction of the thermotropic liquid crystal polymer are as follows: 80- in terms of 100% by the total polymer mass score
99%；
The mass fraction of the polytetrafluoroethylene (PTFE) are as follows: 1-5%；
The mass fraction of the cagelike silsesquioxane are as follows: 2-20%.
Preferably, the cagelike silsesquioxane chemical general formula is (SiO1.5)8Ph8。
Preferably, the thermotropic liquid crystal polymer is aromatic series thermotropic liquid crystal polymer.
Another aspect of the present invention provides a kind of adhesive sheet, by the polymer.
Preferably, the adhesive sheet with a thickness of 50 μm.
Another aspect of the invention provides the preparation method of the adhesive sheet, includes the following steps:
By the thermotropic liquid crystal polymer powder, polytetrafluorethylepowder powder and cagelike silsesquioxane according to 8:0.1:
0.2 to 9.9:0.5:2 ratio mixed processing, obtains mixed component；
Above-mentioned mixed component is obtained into the adhesive sheet by melting, extrusion and stretch processing.
Preferably, the temperature of the melt process is 300-320 DEG C.
Further aspect of the present invention provide the adhesive sheet in 5G communication equipment route board group at upper application.
The dielectric loss of polymer of the invention is low compared with prior art, is unlikely to deform, and water absorption rate is low, and mechanical strength
It is higher, while being also equipped with preferable heat resistance.The lower thermotropic liquid crystal polymer of dielectric loss is used first, is secondly adulterated
The lower polytetrafluoroethylene (PTFE) of dielectric loss, the cagelike silsesquioxane that last further doping dielectric loss is zero, finally makes
The more existing polymer of the dielectric loss of Inventive polymers is low；Thermotropic liquid crystal polymer, which is also equipped with, to be unlikely to deform, and water absorption rate is low,
The higher performance of mechanical strength, the thermotropic liquid crystal polymer are not easy as base material so that the polymer also has
Deformation, water absorption rate is low, the higher performance of mechanical strength；Thermotropic liquid crystal polymer itself has good heat resistance, cage type times
The doping of half siloxanes further improves the heat resistance of the polymer.
Adhesive sheet of the invention is by the polymer, therefore it is low to have a dielectric loss, good stability of the dimension, water absorption rate
It is low, and mechanical strength with higher, while being also equipped with preferable heat-resisting, corrosion-resistant, anti-aging property.
The preparation method of adhesive sheet of the invention only needs to pass through at melting, extrusion and stretching after ingredient physical mixed
Reason process can be prepared by, easy to operate without any complicated technology, and not use organic solvent, green non-pollution, due to not
It is also very high to be related to apparent chemical change preparation method yield of the invention, is not related to loss of material；The thermotropic liquid of matrix material
Crystalline polymer melt viscosity is low, good fluidity, therefore briquetting pressure is low, and the period is short, and it is thin, elongated and complex-shaped that wall-forming can be processed
Product；It is also not required to release agent and post-processing when processing thermotropic liquid crystal polymer, and due to thermotropic liquid crystal polymer material
Molecule forms firm oriented layer, therefore the very smooth light in the surface of workpieces processing on the surface being in contact with metal die
It is sliding.Preparation method of the invention is integrated suitable for large-scale production and is promoted.
[specific embodiment]
Below with reference to embodiment and specific embodiment, the invention will be further described.
On the one hand the embodiment of the present invention provides a kind of polymer, including thermotropic liquid crystal polymer, further include polytetrafluoro
Ethylene and cagelike silsesquioxane；
It is the mass fraction of the thermotropic liquid crystal polymer are as follows: 80- in terms of 100% by the total polymer mass score
99%；
The mass fraction of the polytetrafluoroethylene (PTFE) are as follows: 1-5%；
The mass fraction of the cagelike silsesquioxane are as follows: 2-20%.
The specific thermotropic liquid crystal polymer is matrix material, chooses the thermotropic liquid crystal polymer as matrix
Material is because it has high-intensitive, high-modulus and other excellent mechanical properties, so that the polymer is unlikely to deform；Rigidity
Structure bring heat resistance outstanding and thermal stability；Splendid anti-flammability, weatherability and radiation resistance is good, excellent
For example lower dielectric loss performance of electrical property, due to the viscosity of the thermotropic liquid crystal polymer molten condition it is lower, as
Aggregate material makes the polymer have excellent moulding processability；In a preferred embodiment, the thermotropic liquid crystal is poly-
Conjunction object is aromatic series thermotropic liquid crystal polymer.Aromatic thermotropic liquid crystal polymer is further enhanced due to its aromatic ring structure
The rigidity of polymer, therefore also further enhance the properties of the thermotropic liquid crystal polymer.
Polytetrafluoroethylene (PTFE) is a kind of polymer that property is extremely stable, and has very low dielectric loss performance, is doped into
After the polymer, the polymer items stability can be made to further enhance, such as anticorrosive anti-aging, the property such as heat resistanceheat resistant decomposition
Energy.Its outstanding dielectric loss performance can also be such that the polymer overall dielectric loss further decreases.
The cagelike silsesquioxane chemical structure being eventually adding is as follows:
Due to its cage structure, centre is hollow, therefore dielectric loss is zero, and the silicon oxygen bond in structure is highly stable
Chemical bond, therefore its heat resistance, thermal stability are also fine.The resistance to of the polymer can be promoted by being doped into the polymer
Hot property and thermal stability, while also etc. reducing the dielectric loss of the polymer entirety.In a preferred embodiment, the cage type
Silsesquioxane chemistry formula is (SiO1.5)8Ph8.R group is that phenyl can polymerize with the fragrant thermotropic liquid crystal in the polymer
The phenyl ring of object is easier to blend in process, so that the polymer is whole more uniform, property is also more uniform therewith.
From the above mentioned, polymer described in the embodiment of the present invention use compared with low-dielectric loss thermotropic liquid crystal polymer simultaneously
Doping polytetrafluoroethylene (PTFE) further decreases its dielectric loss performance；Cage type silsesquioxane is also doped with existing polymer phase ratio
Alkane, the dielectric loss of the cagelike silsesquioxane are zero, therefore again reduce the dielectric loss performance of the polymer.And
Three kinds of raw materials, it is thermotropic liquid crystal polymer, the thermal stability of polytetrafluoroethylene (PTFE) and cagelike silsesquioxane, corrosion resistance, anti-ageing
Changing performance, all therefore the stability of polymer entirety is fine very well.The rigidity knot of thermotropic liquid crystal polymer as basis material
Structure is also to be unlikely to deform after the polymer brings machine-shaping, and water absorption rate is low, and mechanical strength with higher is excellent
Point.Therefore viscosity low-flow is good after thermotropic liquid crystal polymer melting is easily worked, make bulk polymerization as basis material
Object becomes easy processing.It can also be controlled by ratio between each component, the preferred generation more multi interaction and skill of type
Art effect such as changes its glass transition temperature, and flexibility, blending property, the performances such as wear resistant corrosion resistant are allowed to be more widely applied.
Above-mentioned polymer is used on the other hand to provide a kind of adhesive sheet for the raw material embodiment of the present invention.It is upper due to using
Stating polymer is raw material, and the adhesive sheet of the embodiment of the present invention has that dielectric loss is low, and good stability of the dimension, water absorption rate is low, and
Mechanical strength with higher, while being also equipped with preferable heat resistance and thermal stability and corrosion-resistant anti-aging property.
In a preferred embodiment, the adhesive sheet with a thickness of 50 μm.The dielectric damage of integral adhesive piece when thinner thickness
Very little is consumed, it is contemplated that limitation and the preparation cost of process conditions, choose this thickness.
The another aspect of the embodiment of the present invention provides the preparation method of the adhesive sheet, includes the following steps:
S01: by the thermotropic liquid crystal polymer powder, polytetrafluorethylepowder powder and cagelike silsesquioxane according to 8:
The ratio mixed processing of 0.1:0.2 to 9.9:0.5:2, obtains mixed component；
S02: above-mentioned mixed component is obtained into the adhesive sheet by melting, extrusion and stretch processing.
In the specific step S01, can as far as possible by each pretreatment of raw material at thinner powder, make the mixing group
It is point more uniform, so that the adhesive sheet quality, the property that are finally processed into are more uniform；
In the step S02, the polymer material has just been formd by melting；In a preferred embodiment, described
The temperature of melt process is 300-320 DEG C.This lowest temperature can make the mixed component all in molten condition, setting temperature
Spending the upper limit on the one hand can be energy saving, on the other hand can also avoid polymers compositions Partial digestion.Then technique item is controlled
Polymer material is squeezed out, is stretched by part, obtains the adhesive sheet.
Adhesive sheet described in the embodiment of the present invention has a lower dielectric loss, good stability, be also equipped with it is stronger
Mechanical strength and shape retention, therefore it is highly suitable for the component part of wiring board in 5G communication equipment.
Now by taking polymer, adhesive sheet and preparation method thereof as an example, the present invention will be described in further detail.
Embodiment 1-5
The present embodiment 1-5 each provides a kind of polymer, adhesive sheet and preparation method thereof.Wherein, each embodiment provides
The formula of polymer see below shown in table 1.
The adhesive sheet that the present embodiment 1-5 embodiment provides is prepared using above-mentioned formula, specific preparation method
It is as follows:
1) by LCP, PTEE and (SiO1.5)8Ph8Powder mixed processing in proportion, obtains mixed component；
2) above-mentioned mixed component is obtained into the adhesive sheet by melting, extrusion and stretch processing.
The test of adhesive sheet correlated performance
Carry out dielectric constant Dk and dielectric loss Df measurement to the embodiment 1-5 adhesive sheet provided, each embodiment bonding
The dielectric constant Dk and dielectric loss Df data of piece are as shown in Table 1 below.
Table 1
From table it can be concluded that, with the increase of cagelike silsesquioxane content, the polymer-modified dielectric loss
Value gradually decreases.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (8)
1. a kind of polymer, including thermotropic liquid crystal polymer, it is characterised in that: further include polytetrafluoroethylene (PTFE) and cage type sesquialter silicon
Oxygen alkane；
It is the mass fraction of the thermotropic liquid crystal polymer are as follows: 80-99% in terms of 100% by the total polymer mass score；
The mass fraction of the polytetrafluoroethylene (PTFE) are as follows: 1-5%；
The mass fraction of the cagelike silsesquioxane are as follows: 2-20%.
2. polymer according to claim 1, it is characterised in that: the cagelike silsesquioxane chemical formula is (SiO1.5)8Ph8。
3. polymer according to claim 1, it is characterised in that: the thermotropic liquid crystal polymer is that aromatic series is thermotropic
Liquid crystal polymer.
4. a kind of adhesive sheet, it is characterised in that: by any polymer of claim 1-3.
5. adhesive sheet according to claim 4, it is characterised in that: the adhesive sheet with a thickness of 50 μm.
6. according to the preparation method of any adhesive sheet of claim 4-5, which comprises the steps of:
Extremely according to 8:0.1:0.2 by the thermotropic liquid crystal polymer powder, polytetrafluorethylepowder powder and cagelike silsesquioxane
The ratio mixed processing of 9.9:0.5:2, obtains mixed component；
Above-mentioned mixed component is obtained into the adhesive sheet by melting, extrusion and stretch processing.
7. the preparation method of adhesive sheet according to claim 6, it is characterised in that: the temperature of the melt process is 300-
320℃。
8. according to any adhesive sheet of claim 4-5 in 5G communication equipment route board group at upper application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581871.XA CN110218464A (en) | 2019-06-30 | 2019-06-30 | Polymer, adhesive sheet and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910581871.XA CN110218464A (en) | 2019-06-30 | 2019-06-30 | Polymer, adhesive sheet and its preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110218464A true CN110218464A (en) | 2019-09-10 |
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Family Applications (1)
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| CN201910581871.XA Pending CN110218464A (en) | 2019-06-30 | 2019-06-30 | Polymer, adhesive sheet and its preparation method and application |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101432853A (en) * | 2006-05-24 | 2009-05-13 | 伊雷克托科学工业股份有限公司 | Laser processing of workpieces containing low-K dielectric material |
| CN102234423A (en) * | 2010-04-26 | 2011-11-09 | 东丽纤维研究所（中国）有限公司 | Polyimide resin base ternary hybrid material with high dielectric constant and preparation method thereof |
| CN105542408A (en) * | 2015-12-29 | 2016-05-04 | 江苏沃特特种材料制造有限公司 | Modified wholly aromatic liquid crystal polyester resin composition and preparation method thereof |
-
2019
- 2019-06-30 CN CN201910581871.XA patent/CN110218464A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101432853A (en) * | 2006-05-24 | 2009-05-13 | 伊雷克托科学工业股份有限公司 | Laser processing of workpieces containing low-K dielectric material |
| CN102234423A (en) * | 2010-04-26 | 2011-11-09 | 东丽纤维研究所（中国）有限公司 | Polyimide resin base ternary hybrid material with high dielectric constant and preparation method thereof |
| CN105542408A (en) * | 2015-12-29 | 2016-05-04 | 江苏沃特特种材料制造有限公司 | Modified wholly aromatic liquid crystal polyester resin composition and preparation method thereof |
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