CN106189058A - A kind of soft graphite composite board and preparation method thereof - Google Patents
A kind of soft graphite composite board and preparation method thereof Download PDFInfo
- Publication number
- CN106189058A CN106189058A CN201610561037.0A CN201610561037A CN106189058A CN 106189058 A CN106189058 A CN 106189058A CN 201610561037 A CN201610561037 A CN 201610561037A CN 106189058 A CN106189058 A CN 106189058A
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- graphite composite
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- carbon black
- composite board
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of soft graphite composite board and preparation method thereof, it includes following raw material by weight: 50 100 parts of expanded graphite powder, 40 90 parts of phenolic resin, polyamide 1 10 parts, polyvinyl formal and/or polyvinyl acetal 5 30 parts, ethanol 20 120 parts, coupling agent 15 parts, defoamer 15 parts, white carbon black 1 10 parts, 15 parts of firming agent.During preparation, above-mentioned raw materials mix homogeneously is made into slurry；Then knife type coater is used directly to be applied to by slurry on the top and bottom of nylon wire or tinplate, by it at dry formation tablet；Then carry out hot-forming, the last demoulding cooling obtain graphite composite plate material finished product.This graphite composite plate material meets the requirement of sealing plate material national standard, meets the most operating ambient temperature of sealing plate material.
Description
Technical field
The invention belongs to Material Field, relate to a kind of sealing plate material, be specially a kind of soft graphite composite board and system thereof
Preparation Method.
Background technology
At present, the preparation method of existing graphite composite plate material has dry blend wet mixing die pressing, and the method is difficult due to batch mixing
With mix homogeneously and be combined with each other, causing sheet material poor mechanical property, poor air-tightness, production efficiency is low, it is impossible to meet industry
Change and produce in enormous quantities.Batch mixing existing market valency used is high, and production cost is high.On market, existing graphite composite plate material the most all contains
Having many or few asbestos, asbestos are carcinogen, and current developed country has prohibited use.Asbestos-free graphite composite plate material
The shortcomings such as main binding agent is rubber-like mostly, has the most aging, and service life is short, heat resistance difference.
Summary of the invention
It is an object of the invention to provide a kind of soft graphite composite board and preparation method thereof, its parameters all can meet close
The national standard of shrouding material.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of graphite composite plate material, including by weight
The following raw material of amount part meter: expanded graphite powder 50-100 part, phenolic resin 40-90 part, polyamide 1-10 part, polyethylene
Alcohol formal and/or polyvinyl acetal 5-30 part, ethanol 20-120 part, coupling agent 1-5 part, defoamer 1-5 part, white carbon black 1-
10 parts, firming agent 1-5 part.
Preferably in scheme, 50 parts of described expanded graphite powder, 40 parts of phenolic resin, polyamide 10 parts, polyvinyl alcohol
Formal and polyvinyl acetal totally 10 parts, ethanol 40 parts, coupling agent 2 parts, defoamer 2 parts, white carbon black 5 parts, 1 part of firming agent.
Further, described coupling agent is silane coupler, and defoamer is polyoxypropylene ethylene oxide glycerin ether, solidification
The diluent that agent is paratoluensulfonyl chloride and dehydrated alcohol is 1:1-10 in mass ratio, can be in the mobility premise ensureing slurry
Under, improve rate of drying and hot-forming efficiency.When adding firming agent, consumption and the concentration of paratoluensulfonyl chloride need precisely control
System, otherwise causes slurry to lose flowability, it is impossible to coated and molded.
Further, the expansion multiple of described expanded graphite more than 50 times, white carbon black semi-reinforcing carbon black.
Further, phenolic resin with the mass ratio of polyvinyl formal and/or polyvinyl acetal is: 2-6:1.
Otherwise easily cause sheet forming temperature tolerance extreme difference, it is impossible to meet basic sealing part works environment.
The method that the invention still further relates to prepare described soft graphite composite board, concretely comprises the following steps:
1) in ethanol, add polyvinyl formal and/or polyvinyl acetal mix homogeneously, wait to be completely dissolved, then add
Enter phenolic resin and polyamide mix homogeneously, add defoamer mix homogeneously, by expanded graphite powder, white carbon black, coupling agent
Add after mix homogeneously and be made into slurry, finally firming agent is added in slurry；
2) use knife type coater that slurry is directly applied to the top and bottom of nylon wire or tinplate in the slurry of step 1) gained
On, it is formed tablet in dry 2-15 minute at 60-80 DEG C；Then 120-150 DEG C, 2Mpa-8Mpa carry out hot-forming
10-30 minute, last demoulding cooling obtained graphite composite plate material finished product.
Further, step 2) in be dried 15 minutes at 80 DEG C after coated and molded.
Further, step 2) in hot-forming control parameter be 150 DEG C, 8Mpa, the time is 30 minutes.
Further, the thickness of coated and molded is generally 0.5mm-2mm.
Use knife type coater that slurry is directly applied to molding on the top and bottom of nylon wire or tinplate, considerably increase
Production efficiency, and by slurry can be the most orderly be compounded in enhancing base material on, moreover it is possible to control product thickness accurately.
Owing to expanded graphite powder has a multiple good characteristic: heat expansiveness；Extremely strong resistance to pressure, pliability, plastic
Property and self lubricity；Extremely strong anti-high and low temperature, anticorrosive, radioprotective characteristic；Extremely strong shock-resistance features；Extremely strong aging resistance, anti-
The characteristic of distortion；Fusing and the infiltration of various metal can be resisted;Nontoxic, without any carcinogen, environment is safe from harm.Choosing
Use expanded graphite powder, compare the other materials selected including crystalline flake graphite, the soft graphite composite board that this method produces
There is more excellent air-tightness, compression resilience, stability when doing encapsulant.But add expanded graphite powder to need to overcome
Its extremely strong characterization of adsorption, joined slurry fluidity is poor, disperses uneven.The present invention is by controlling expanded graphite powder with each
Raw material adds mass ratio, particularly with the ratio of solvent, and increases the dispersibility of powder body material by adding white carbon black, is able to gram
Take an above difficult problem.
Polyamide and phenolic resin there occurs co-curing behavior；The reactivity of phenolic resin is along with polyamide
Increase be gradually lowered, accelerate to be dried and hot-forming efficiency；The polyamide added effectively improves phenolic resin
Toughness, increases the compression resilience of product；Addition firming agent, under the mobility premise ensureing slurry, accelerates being dried when heating up
Speed and hot-forming efficiency；White carbon black, as reinforcing agent, contributes to the dispersion of material in slurry, increases the wearability of sheet material.
Select polyvinyl formal and/or polyvinyl acetal, can be used for the toughness of phenol-formaldehyde resin modified, compare choosing
The sheet material temperature tolerance produced with polyvinyl butyral resin is more preferable.
Owing to silicone defoamer dissolubility is poor, have at normal temperatures antifoaming speed quickly, suds preferable, but at height
Temperature issues layer estranged, antifoaming speed compared with the feature such as slow, suds is poor.Select defoamer polyoxypropylene ethylene oxide glycerin ether, tool
There is the feature such as suds time length, effective, antifoaming speed fast, Heat stability is good.
Using soft graphite composite board prepared by above-mentioned formula and method, its parameters all can meet sealing plate material
National standard.
Detailed description of the invention
Further illustrate the present invention below in conjunction with embodiment, but the scope of protection of present invention is not limited to implement
The scope of example statement.
Embodiment 1: a kind of graphite composite plate material, the following raw material including by weight: 50 parts of described expanded graphite powder,
40 parts of phenolic resin, polyamide 10 parts, polyvinyl formal and polyvinyl acetal totally 10 parts, ethanol 40 parts, silicon
Alkane coupling agent 2 parts, polyoxypropylene ethylene oxide glycerin ether 2 parts, white carbon black 5 parts, toluene sulfochloride and dehydrated alcohol are in mass ratio
The diluent of 1:10 1 part.
Embodiment 2: a kind of soft graphite composite board, the following raw material including by weight: expanded graphite powder 100
Part, 90 parts of phenolic resin, polyamide 10 parts, polyvinyl formal 30 parts, ethanol 120 parts, coupling agent 5 parts, defoamer 5
Part, white carbon black 10 parts, 5 parts of firming agent.
Embodiment 3: a kind of soft graphite composite board, the following raw material including by weight: 50 parts of expanded graphite powder,
40 parts of phenolic resin, polyamide 1 part, polyvinyl acetal 5 parts, ethanol 20 parts, coupling agent 1 part, defoamer 1 part, charcoal
Black 1 part, 1 part of firming agent.
Embodiment 4: a kind of soft graphite composite board, the following raw material including by weight: 80 parts of expanded graphite powder,
60 parts of phenolic resin, polyamide 5 parts, polyvinyl formal 5 parts, polyvinyl acetal 5 parts, ethanol 70 parts, coupling
Agent 3 parts, defoamer 3 parts, white carbon black 5 parts, 3 parts of firming agent.
Embodiment 5: a kind of soft graphite composite board, the following raw material including by weight: described expanded graphite powder
60 parts, 50 parts of phenolic resin, polyamide 10 parts, polyvinyl formal 10 parts, polyvinyl acetal 15 parts, ethanol 40
Part, silane coupler 2 parts, polyoxypropylene ethylene oxide glycerin ether 3 parts, white carbon black 7 parts, toluene sulfochloride and dehydrated alcohol are by quality
Than the diluent 5 parts for 1:5.
The expansion multiple of above-described expanded graphite more than 50 times, white carbon black semi-reinforcing carbon black.
These embodiments are interpreted as being merely to illustrate the present invention rather than for limiting the scope of the invention.Readding
After having read the content that the present invention records, the present invention can be made various changes or modifications by those skilled in the art, these equivalences
Change and modification fall into claims of the present invention limited range equally.
Prepare concretely comprising the following steps of soft graphite composite board:
1) in ethanol, add polyvinyl formal and/or polyvinyl acetal mix homogeneously, wait to be completely dissolved, then add
Enter phenolic resin and polyamide mix homogeneously, add defoamer mix homogeneously, by expanded graphite powder, white carbon black, coupling agent
Add after mix homogeneously and be made into slurry, finally firming agent is added in slurry；
2) use knife type coater that slurry is directly applied to the top and bottom of nylon wire or tinplate in the slurry of step 1) gained
On, it is formed tablet in dry 2-15 minute at 60-80 DEG C；Then 120-150 DEG C, 2Mpa-8Mpa carry out hot-forming
10-30 minute, last demoulding cooling obtained graphite composite plate material finished product.
Concrete steps 2) in be dried 15 minutes at 80 DEG C after coated and molded；Hot-forming control parameter is 150 DEG C,
8Mpa, the time is 30 minutes；The thickness of coated and molded is generally 0.5mm-2mm.
Claims (9)
1. a soft graphite composite board, it is characterised in that include following raw material by weight: expanded graphite powder
50-100 part, phenolic resin 40-90 part, polyamide 1-10 part, polyvinyl formal and/or polyvinyl acetal 5-
30 parts, ethanol 20-120 part, coupling agent 1-5 part, defoamer 1-5 part, white carbon black 1-10 part, firming agent 1-5 part.
Soft graphite composite board the most according to claim 1, it is characterised in that: 50 parts of described expanded graphite powder, phenolic aldehyde
Resin 40 parts, polyamide 10 parts, polyvinyl formal and polyvinyl acetal totally 10 parts, ethanol 40 parts, coupling agent 2
Part, defoamer 2 parts, white carbon black 5 parts, 1 part of firming agent.
Graphite composite plate material the most according to claim 1, it is characterised in that: described coupling agent is silane coupler, disappears
Infusion is polyoxypropylene ethylene oxide glycerin ether, and firming agent is paratoluensulfonyl chloride with dehydrated alcohol in mass ratio for 1:1-10
Diluent.
Soft graphite composite board the most according to claim 1, it is characterised in that: the expansion multiple of described expanded graphite
More than 50 times, white carbon black semi-reinforcing carbon black.
Soft graphite composite board the most according to claim 1, it is characterised in that: phenolic resin and polyvinyl alcohol contracting first
The mass ratio of aldehyde and/or polyvinyl acetal is: 2-6:1.
6. the method for preparation soft graphite composite board described in claim 1-5 any one, it is characterised in that concrete steps
For:
1) in ethanol, add polyvinyl formal and/or polyvinyl acetal mix homogeneously, wait to be completely dissolved, then add
Enter phenolic resin and polyamide mix homogeneously, add defoamer mix homogeneously, by expanded graphite powder, white carbon black, coupling agent
Add after mix homogeneously and be made into slurry, finally firming agent is added in slurry；
2) use knife type coater that slurry is directly applied to the top and bottom of nylon wire or tinplate in the slurry of step 1) gained
On, it is formed tablet in dry 2-15 minute at 60-80 DEG C；Then 120-150 DEG C, 2Mpa-8Mpa carry out hot-forming
10-30 minute, last demoulding cooling obtained graphite composite plate material finished product.
Method the most according to claim 6, it is characterised in that: step 2) in be dried 15 minutes at 80 DEG C after coated and molded.
Method the most according to claim 6, it is characterised in that: step 2) in hot-forming control parameter be 150 DEG C,
8Mpa, the time is 30 minutes.
Method the most according to claim 6, it is characterised in that: the thickness of coated and molded is generally 0.5mm-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610561037.0A CN106189058A (en) | 2016-07-18 | 2016-07-18 | A kind of soft graphite composite board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610561037.0A CN106189058A (en) | 2016-07-18 | 2016-07-18 | A kind of soft graphite composite board and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106189058A true CN106189058A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610561037.0A Pending CN106189058A (en) | 2016-07-18 | 2016-07-18 | A kind of soft graphite composite board and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893440A (en) * | 2017-02-28 | 2017-06-27 | 宜昌新成石墨有限责任公司 | A kind of color steel tile with equadag coating and preparation method thereof |
| CN109608220A (en) * | 2018-11-23 | 2019-04-12 | 大同新成新材料股份有限公司 | A kind of manufacturing process of graphite plate |
| CN115195237A (en) * | 2022-07-22 | 2022-10-18 | 宜昌新成石墨有限责任公司 | Flexible graphite sealing plate and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893440A (en) * | 2017-02-28 | 2017-06-27 | 宜昌新成石墨有限责任公司 | A kind of color steel tile with equadag coating and preparation method thereof |
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| CN115195237A (en) * | 2022-07-22 | 2022-10-18 | 宜昌新成石墨有限责任公司 | Flexible graphite sealing plate and preparation method thereof |
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Application publication date: 20161207 |