CN110484024A - A method of preparing PTFE modified inorganic powder compounded mix - Google Patents
A method of preparing PTFE modified inorganic powder compounded mix Download PDFInfo
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- CN110484024A CN110484024A CN201910753994.7A CN201910753994A CN110484024A CN 110484024 A CN110484024 A CN 110484024A CN 201910753994 A CN201910753994 A CN 201910753994A CN 110484024 A CN110484024 A CN 110484024A
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- ptfe
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- silica
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
Abstract
The invention discloses a kind of methods for preparing PTFE modified inorganic powder compounded mix, it is related to polymer composites technical field, it is difficult the problem modifies in polymer matrix directly as applying filler in view of PTFE and other polymers and the poor compatibility of inorganic particle, the present invention provides a kind of methods of the uniform coated silica of PTFE, significantly improve the compatibility of PTFE Yu polymer and inorganic filler；Silicon oxide dimensions changes in distribution after treatment is little, can be added in required matrix in the form of filler, to realize the purpose of modified matrix performance, has more broad application prospect.
Description
Technical field:
The present invention relates to polymer composites technical fields, and in particular to a kind of to prepare PTFE modified inorganic powder bluk recombination
The method of filler.
Background technique:
PTFE is a kind of polymer material of excellent combination property, with fabulous resistant of high or low temperature and resistant to chemical etching
Property, and dielectric properties are excellent, and coefficient of friction is minimum, but creep resistance it is poor, with the bad adhesion of other materials, resilience difference and
The disadvantages of easy to wear, limits its application.Especially with the compatibility of inorganic material and bad adhesion, make its application field significantly
It is limited.Modified for PTFE have very much, but the preparation method of PTFE coated silica filler has not been reported.
Radiation method handles the surface PTFE, improves its surface hydrophilicity and is a kind of relatively common with the caking property of other substances
Technology.(SURFACE AND INTERFACE ANALYSIS, the 2001,31:P385-396&2001 such as D.J.Wilson；31:
P397-408) variation that the surface plasma modification PTFE assigns the surface PTFE is had studied in detail, it is hydrophilic if water contact angle reduces
Property increase, surface roughness increase etc..And these variation with corona treatment PTFE rear surface polar group, such as Ar,
N2And NH3In atmosphere handle PTFE after (O)-, (OH)-, (CH)-and (C2H)-group obviously increases related.
Also research (Xi'an University of Engineering Science & Technology journal, the 4th phase P432-436 of volume 20) shows plasma-treated
After high molecular material aoxidizes in air afterwards, oxygen or water vapour in air can react with the living radical on surface,
The groups such as hydroxyl (- OH) or carboxyl (- COOH) are introduced in sample surfaces.
Other radiation modifying methods, such as gamma-rays, electron beam irradiation, excimer laser, particle beams injection, ultraviolet radioactive
Deng, to the processing on the surface PTFE have similar effect (Chinese adhesive, 2010, the 12nd phase P52-56 of volume 19 and Chinese glue
Stick, 2009, the 9th phase P47-51 of volume 18), thus can be used to become one of step of the invention, change for the present invention
It lays a good foundation on the property surface PTFE.
Patent CN103085385A discloses a kind of ptfe substrate and preparation method thereof, this patent is due to using being situated between
The lower aerosil of electric constant is filler, greatly reduces the dielectric constant of substrate and realizes adjustable.Passing through will
Prefabricated aerosil is sufficiently mixed with ptfe emulsion, and it is thin that thermoplasticity then is made in mixed liquor drying and calcining
Piece.
Patent CN104479266A discloses the surface modifying method and its PTFE base of a kind of inorganic nano-particle
Inorganic nano-particle and polyethylene glycol 400 are first prepared into suspension by composite material, this patent, then be added rare earth nitrades and
Disodium ethylene diamine tetraacetate is added mercaptopropyl trimethoxysilane after ultrasonic and is modified, is blended after drying with polytetrafluoroethylene (PTFE) powder,
Compression molding, which is calcined, is made polytetrafluoroethylene (PTFE)/inorganic nanometer particle compesite.Modified inorganic nano-particle and polytetrafluoro
The interface binding power of ethylene enhances, and the comprehensive mechanical property of composite material is excellent.
Patent CN109456051A discloses a kind of preparation method of polytetrafluoroethylene (PTFE) base ceramic material, including the use of fluorine-containing
Silane coupling agent is modified ceramic powder material surface, then passes through ball milling mixing for modified ceramic powder and poly- four
Vinyl fluoride is compound, is formed, is sintered by crushing after compound, and composite material is finally made.
The common feature of the above patent method therefor be inorganic particulate and PTFE are modified it is compound after, be through overmolding
Sintering obtains final composite material, and resulting material forms are the form of film or plate, hardly results in popularization and application.The present invention mentions
A kind of silica filler of PTFE cladding is supplied, PTFE is evenly coated, and silicon oxide dimensions and dispersibility variation less, can be with
It is added to required matrix in the form of filler, there is more broad application prospect.
Summary of the invention:
Technical problem to be solved by the present invention lies in a kind of preparation method of PTFE coated silica filler is provided, fill out
Expect good dispersion, granularity is adjustable, and surface coated PTFE amount is adjustable, has a wide range of applications field.
The following technical solution is employed for the technical problems to be solved by the invention to realize:
A method of preparing PTFE modified inorganic powder compounded mix, comprising the following steps:
(1) PTFE powder is surface-treated using low-temperature plasma generator, and placed in air；Then will
PTFE powder disperses in a solvent, to obtain PTFE slurry；It is eventually adding silane coupling agent to be surface-treated, it is modified to obtain PTFE
Powder；
(2) silica is distributed in solvent and obtains silica slurry, silane coupling agent is then added and carries out surface
Processing, obtains silica modified powder；
(3) the modified powder of PTFE and silica modified powder are added into n-hexane, the heating of gained slurry is reacted and through filtering
It dries afterwards or reacts gained slurry under high temperature drying, obtain PTFE coated silica filler.
Solvent in the step (1) and (2) is selected from the mixed solution of water or ethyl alcohol or both.
PTFE grain diameter in the step (1) is 0.2-10 μm, preferably 0.2-1 μm.
It is even that silane coupling agent in step (1) neutralization procedure (2) is selected from vinyl silicane coupling agent, amino silane
Join one or more of agent, phenylamino silane coupling agent, epoxy silane coupling agent, isocynate silane coupling agent.
To step (3) when silane coupling agent in the step (1) and step (2) selects vinyl silicane coupling agent
Containing hydrogen silicone oil and catalyst for addition reaction of hydrogen and silicon are added in hexane.
The dosage of the step (1) and the silane coupling agent in step (2) is the 1-15% of slurry solid content.
The mass ratio of the modified powder of PTFE and silica modified powder in the step (3) is 0.1-1:10.
Containing hydrogen silicone oil in the step (3) is the containing hydrogen silicone oil of arbitrary structures, and it is direct that each molecule contains at least two silicon
The organopolysiloxane of the hydrogen atom of bonding, preferably each molecule contain organic poly- silicon oxygen of the hydrogen atom of 2 Si direct bondings
Alkane.
In the step (3) catalyst for addition reaction of hydrogen and silicon preferred platinum group metal base catalyst (such as platinum, rhodium, iridium, palladium or
Ruthenium catalyst), further preferred metal platinum, platinocyanide and platinum complex (such as chloroplatinic acid, six hydration chloroplatinic acids, platinous chloride and
The complex compound of this compound of organopolysiloxane containing low-molecular-weight ethylenic base)；Catalyst amount is step (3) material
The 1-500ppm of total amount, in terms of metal.
Heating reaction temperature in the step (3) is 30-50 DEG C, it is dry using oven drying or ultrasonic wave it is dry or from
Core type fluidized bed drying (is not limited to these drying modes)；High temperature drying uses and is dried under reduced pressure or is spray-dried, drying temperature
At 100-250 DEG C.
The preparation principle of PTFE coated silica filler of the present invention:
First by radiating surface method of modifying such as Low Temperature Plasma Treating PTFE particle surface, its surface is made to generate work
Property functional group, then handles PTFE and silica surface with silane coupling agent appropriate respectively respectively.The PTFE handled in this way
There is preferable compatibility, more uniform mixed system easy to form with silica.Contact with each other through silane treatment
There are active function groups to be reacted for PTFE and silica surface, finally anti-by generating between these active function groups again
It answers, makes to generate cladding of the strong interaction to realize PTFE to silica between PTFE and silica.Silane coupling agent
When the active function groups left after processing powder are vinyl, it can be made by the method that containing hydrogen silicone oil and platinum catalyst is added
Reaction；Also it can use amino and epoxy group react, or reacted using isocyanates with amino.
The present invention provides a kind of method for making PTFE be coated on silica, innovation is to activate PTFE table first
Then face can remain in PTFE and silicon dioxide meter by silane by silane treatment as silica
The active function groups in face react, to realize PTFE to the cladding of silica.So all silicon that may be reacted
Alkane coupling agent all may using method of the present invention implement PTFE to silica even other inorganic fillers cladding, than
Such as aluminum oxide, magnesia, zinc oxide, titanium dioxide, silica flour, aluminium hydroxide, magnesium hydroxide, carbon black, graphite, hard charcoal
Black, clay, kaolin, attapulgite, montmorillonite, diatomite, mica, talcum powder, wollastonite, calcium carbonate, magnesium carbonate, carbonic acid
Barium, barium titanate, strontium titanates, barium sulfate etc..
The beneficial effects of the present invention are: being difficult in view of PTFE and other polymers and the poor compatibility of inorganic particle directly
The problem modifies in polymer matrix as applying filler, the present invention provides a kind of sides of the uniform coated silica of PTFE
Method significantly improves the compatibility of PTFE Yu polymer and inorganic filler；Silicon oxide dimensions changes in distribution after treatment
Less, it can be added in required matrix in the form of filler, to realize the purpose of modified matrix performance, be had more extensively
Application prospect.
Detailed description of the invention:
Fig. 1 is that the SEM of comparative example products made thereby schemes；
Fig. 2 is that the SEM of 1 products made thereby of embodiment schemes；
Fig. 3 is that the SEM of 2 products made thereby of embodiment schemes.
Specific embodiment:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment and diagram are closed, the present invention is further explained.
Embodiment 1
(1) processing 20min is carried out using PTFE powder surface of the low-temperature plasma generator to 0.2um under an ar atmosphere,
And 3h is placed in air.Processed powder is distributed in aqueous solution, PTFE slurry is first placed in 70 by solid content 5%
In DEG C thermostat water bath, by vinyl silanes: water: ethyl alcohol presses 4:1:4 ultrasonic mixing 20min, and vinyl silanes dosage is to contain admittedly
The 2% of amount, is then added in PTFE slurry, reacts 4h, filtering drying, and obtained powder is the modified powder of PTFE.
(2) silica is handled with vinyl silicane coupling agent, and silica slurry is first placed in 70 DEG C of thermostat water baths
In, by vinyl silanes: water: ethyl alcohol presses 4:1:4 ultrasonic mixing 20min, and vinyl silanes dosage is the 2% of solid content, then plus
Enter into silica slurry, reacts 4h, filtering drying, this is silica modified powder.
(3) 0.15g containing hydrogen silicone oil (hydrogen content 0.18wt%) is added in appropriate hexane, by the modified powder of PTFE and titanium dioxide
Si modification powder is added according to the ratio of 0.2:10, and solid content is adjusted to 15%, reaction dosage in terms of platinum with chloroplatinic acid-catalysis
For 20ppm, reaction temperature is 30 DEG C, reaction time 1h；Then by powder filtering drying, product is obtained.Product SEM is attached drawing
2。
Embodiment 2
(1) processing 20min is carried out using PTFE powder surface of the low-temperature plasma generator to 0.2um under an ar atmosphere,
And 3h is placed in air.Processed powder is distributed in aqueous solution, PTFE slurry is first placed in 70 by solid content 5%
In DEG C thermostat water bath, by amino silane: water: ethyl alcohol presses 4:1:4 ultrasonic mixing 20min, and amino silane dosage is solid content
2%, it is then added in PTFE slurry, reacts 4h, filtering drying, obtained powder is the modified powder of PTFE.
(2) silica is handled with the silane coupling agent containing epoxy group, and silica slurry is first placed in 70 DEG C of perseverances
In warm water bath, by epoxy silane: water: ethyl alcohol presses 4:1:4 ultrasonic mixing 20min, and epoxy silane dosage is the 2% of solid content,
It is then added in silica slurry, reacts 4h, filtering drying, this is silica modified powder.
(3) the modified powder of PTFE and silica modified powder are added in appropriate hexane to be added according to the ratio of 0.2:10, Gu
Content is adjusted to 15%, and reaction temperature is 50 DEG C, reaction time 1h；Then by powder filtering drying, product is obtained.Product
SEM is attached drawing 3.
Comparative example
(1) processing 20min is carried out using PTFE powder surface of the low-temperature plasma generator to 0.2um under an ar atmosphere,
And 3h is placed in air, obtained powder is that PTFE handles powder.
(2) silica is handled with vinyl silicane coupling agent, and for method of modifying with embodiment 1, this is silica modified
Powder.
(3) 0.15g containing hydrogen silicone oil (hydrogen content 0.18wt%) is added in appropriate hexane, by the modified powder of PTFE and titanium dioxide
Si modification powder is added according to the ratio of 0.2:10, and solid content is adjusted to 15%, reaction dosage in terms of platinum with chloroplatinic acid-catalysis
For 20ppm, reaction temperature is 30 DEG C, reaction time 1h；Then by powder filtering drying, product is obtained.Product SEM is attached drawing
1。
By attached drawing 2 and 3 as it can be seen that by the powder that the present invention is handled, PTFE is changed, and is coated on silicon dioxide meter
Face.
It, can not be in conjunction with improved silica by attached drawing 1 as it can be seen that PTFE is only by the activation of plasma.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of method for preparing PTFE modified inorganic powder compounded mix, it is characterised in that: the following steps are included:
(1) PTFE powder is surface-treated using low-temperature plasma generator, and placed in air；Then by PTFE powder
Body disperses in a solvent, to obtain PTFE slurry；It is eventually adding silane coupling agent to be surface-treated, obtains the modified powder of PTFE；
(2) silica is distributed in solvent and obtains silica slurry, silane coupling agent is then added and is surface-treated,
Obtain silica modified powder；
(3) the modified powder of PTFE and silica modified powder are added into n-hexane, the heating of gained slurry is reacted and done after filtering
It is dry or react gained slurry under high temperature drying, obtain PTFE coated silica filler.
2. preparation method according to claim 1, it is characterised in that: solvent in the step (1) and (2) be selected from water or
The mixed solution of ethyl alcohol or both.
3. preparation method according to claim 1, it is characterised in that: the PTFE grain diameter in the step (1) is
0.1-10 μm, preferably 0.2-1 μm.
4. preparation method according to claim 1, it is characterised in that: the silane in step (1) neutralization procedure (2) is even
Join agent and is selected from vinyl silicane coupling agent, amino silicane coupling agent, phenylamino silane coupling agent, epoxy silane coupling agent, isocyanide
One or more of acid esters silane coupling agent.
5. preparation method according to claim 1, it is characterised in that: silane coupled in the step (1) and step (2)
Containing hydrogen silicone oil and hydrosilylation catalysis is added when vinyl silicane coupling agent is selected in agent into the n-hexane of step (3)
Agent.
6. preparation method according to claim 1, it is characterised in that: silane coupled in the step (1) and step (2)
The dosage of agent is the 1-15% of slurry solid content；PTFE in step (3) is modified powder and the mass ratio of silica modified powder is
0.1-1:10。
7. preparation method according to claim 5, it is characterised in that: the containing hydrogen silicone oil in the step (3) is any knot
The containing hydrogen silicone oil of structure, each molecule contain the organopolysiloxane of the hydrogen atom of at least two Si direct bonding, preferably each molecule
The organopolysiloxane of hydrogen atom containing 2 Si direct bondings.
8. preparation method according to claim 5, it is characterised in that: the hydrosilylation catalysis in the step (3)
Agent preferred platinum group metal base catalyst, catalyst amount is the 1-500ppm of step (3) material total amount, in terms of metal.
9. preparation method according to claim 8, it is characterised in that: the preferred metal platinum of the platinum group metal base catalyst,
Platinocyanide or platinum complex.
10. preparation method according to claim 1, it is characterised in that: the heating reaction temperature in the step (3) is
It is 30-50 DEG C, dry using oven drying or ultrasonic wave drying or centrifugal fluidized bed drying；High temperature drying using being dried under reduced pressure or
Person's spray drying, drying temperature is at 100-250 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336486A (en) * | 2021-06-03 | 2021-09-03 | 青岛理工大学 | Cement-based composite material with damping function |
| WO2022127116A1 (en) * | 2020-12-19 | 2022-06-23 | 广东西敦千江粉漆科学研究有限公司 | Preparation method for and application of weather-resistant, wear-resistant and hydrophobic aid |
| CN114833335A (en) * | 2022-04-20 | 2022-08-02 | 西安近代化学研究所 | Coated magnesium powder with combustion micro-explosion effect, preparation method and application thereof |
| WO2022246892A1 (en) * | 2021-05-28 | 2022-12-01 | 蚌埠壹石通聚合物复合材料有限公司 | Ptfe composite powder, preparation method, and composite material containing ptfe composite powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0604799A1 (en) * | 1992-12-29 | 1994-07-06 | International Business Machines Corporation | Coated filler and use thereof |
| CN101890314A (en) * | 2010-07-20 | 2010-11-24 | 东华大学 | Surface hydrophilic modification method for polytetrafluoroethylene bulked membrane |
| CN106751331A (en) * | 2017-01-19 | 2017-05-31 | 深圳市明鑫高分子技术有限公司 | Graphene modified teflon material |
-
2019
- 2019-08-15 CN CN201910753994.7A patent/CN110484024B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0604799A1 (en) * | 1992-12-29 | 1994-07-06 | International Business Machines Corporation | Coated filler and use thereof |
| CN101890314A (en) * | 2010-07-20 | 2010-11-24 | 东华大学 | Surface hydrophilic modification method for polytetrafluoroethylene bulked membrane |
| CN106751331A (en) * | 2017-01-19 | 2017-05-31 | 深圳市明鑫高分子技术有限公司 | Graphene modified teflon material |
Non-Patent Citations (1)
| Title |
|---|
| 黄丽等: "微米和纳米SiO2改性聚四氟乙烯的摩擦磨损性能", 《复合材料学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127116A1 (en) * | 2020-12-19 | 2022-06-23 | 广东西敦千江粉漆科学研究有限公司 | Preparation method for and application of weather-resistant, wear-resistant and hydrophobic aid |
| WO2022246892A1 (en) * | 2021-05-28 | 2022-12-01 | 蚌埠壹石通聚合物复合材料有限公司 | Ptfe composite powder, preparation method, and composite material containing ptfe composite powder |
| CN113336486A (en) * | 2021-06-03 | 2021-09-03 | 青岛理工大学 | Cement-based composite material with damping function |
| CN114833335A (en) * | 2022-04-20 | 2022-08-02 | 西安近代化学研究所 | Coated magnesium powder with combustion micro-explosion effect, preparation method and application thereof |
| CN114833335B (en) * | 2022-04-20 | 2023-08-11 | 西安近代化学研究所 | Coated magnesium powder with combustion micro-explosion effect, preparation method and application thereof |
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