CN109553328A - The preparation method of low loss composite filling heat-resisting material - Google Patents
The preparation method of low loss composite filling heat-resisting material Download PDFInfo
- Publication number
- CN109553328A CN109553328A CN201811301121.4A CN201811301121A CN109553328A CN 109553328 A CN109553328 A CN 109553328A CN 201811301121 A CN201811301121 A CN 201811301121A CN 109553328 A CN109553328 A CN 109553328A
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- Prior art keywords
- vermiculite
- low loss
- preparation
- resisting material
- composite filling
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1037—Intumescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1078—Fire-resistant, heat-resistant materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of preparation methods of low loss composite filling heat-resisting material, include the following steps: A, will mix after high-temperature expansion vermiculite and the crushing of chemically expansible vermiculite by proper proportion；B, vermiculite granule and appropriate adhesive are mixed into paste；C, vermiculite granule paste is placed in mold, passes through high temperature and pressure sulfidization molding；D, filler after molding is demoulded.The beneficial effects of the present invention are: having both intensity and flexibility, have excellent high temperature resistant property, still maintains good seal performance under 980 DEG C of superhigh temperature operating condition.
Description
Technical field
The present invention relates to sealing material field, the preparation side of specifically a kind of low loss composite filling heat-resisting material
Method.
Background technique
With the development of industrial technology, the nonmetallic sealing material of high-performance has played extremely important work in sealing industry
With wherein taking soft graphite (exfoliated graphite) as the nonmetallic sealing material of representative, because its is excellent resistance to mild
Processability is widely used in valve industry.But it is flexible as the temperature rises, under high temperature even superhigh temperature operating condition
The sealing performance of graphite material is gradually decreased or is failed, and greatly constrains nonmetallic sealing material in high temperature valve field
Using.Chinese patent literature CN 201715085U discloses a kind of " double packing seals for preventing low loss on January 19th, 2011
Structure ", it is characterised in that be provided with 1. valve bodies, 2. lengthening necks, 3. valve rods, 4. spacer rings, 5. packing press rings, 6. glands, 7. pressures
Ring, 8.O type circle, 9. fillers, 10. leak detection plug screws, 11. gaskets；There is gasket 11 on valve body 1, lengthens neck 2 and connect with valve body 1,
Lengthening is lower layer's filler 9 in neck 2, and spacer ring 4 is housed, there is filler 9 above；The O-ring 8 of two kinds of specifications is in pressure ring 5, pressure ring 5
It is pressure ring 7 and gland 6 mounted in lengthening above in neck；There is sealant tape on leak detection plug screw 10, is connected to and lengthens on neck 2；Gasket, pressure
Ring is plastic-steel material.In this class formation, low loss composite filling is the key factor for realizing sealing effect, in particular for height
Warm operating condition, and existing nonmetallic composite filling sealing effect under worst hot case is difficult to reach design requirement, thus seriously
Constrain the further development of relevant industries.
Summary of the invention
Based on problem above, the present invention provides a kind of preparation method of low loss composite filling heat-resisting material, has
Excellent high temperature resistant property, under 980 DEG C of superhigh temperature operating condition still maintains good seal performance.
In order to realize goal of the invention, the present invention adopts the following technical scheme: a kind of low loss composite filling high temperature resistant material
The preparation method of material, includes the following steps:
A, it is mixed after crushing high-temperature expansion vermiculite and chemically expansible vermiculite by proper proportion；
B, vermiculite granule and appropriate adhesive are mixed into paste；
C, vermiculite granule paste is placed in mold, passes through high temperature and pressure sulfidization molding；
D, filler after molding is demoulded.
The preparation method of the low loss composite filling heat-resisting material of this programme design, an outstanding feature is exactly to select
Two raw materials of high-temperature expansion vermiculite and chemically expansible vermiculite are selected.High-temperature expansion vermiculite material fragility is good, and intensity and hardness are higher；
Chemically expansible vermiculite flexibility is preferable；The material that high-temperature expansion vermiculite and chemically expansible vermiculite are mixed just is had two kinds
The advantage of material respectively, so that raw material can obtain a good combination balancing in intensity, hardness and flexibility, it can be preferably
Raising product performance.
Preferably, the high-temperature expansion vermiculite in step A is prepared using microwave heating method.It is prepared using microwave method heating swollen
Swollen vermiculite, vermiculite internal moisture are themselves directly heated vaporization, and a large amount of uniform stomatas can be left inside vermiculite, keep its expansion uniform
Degree is more preferable.
Preferably, the size range value after expanded vermiculite crushes in step A is 50 ~ 300um.Vermiculite after expansion needs
It is handled with colloid mill, obtains the expanded vermiculite particle that particle size range is 50~300um, and use fine grinding two after first corase grinding
A stage is handled.
Preferably, being additionally provided with step A1 between step A and B: it is modified to carry out surface to expanded vermiculite particle.Due to vermiculite
Hydrophilic, the hydrophobic the two poor compatibility of adhesive is unfavorable for hot-press solidifying molding, therefore, it is necessary to change to vermiculite mixed slurry
Property, promote the compatibility with adhesive, while improving the anti-moisture absorption property of vermiculite, improves the reliability of sealing material.
Preferably, carrying out surface modification to expanded vermiculite particle has used silane coupling agent.When silane coupling agent between
It is inorganic between organic interface, organic matrix-silane coupling agent-inorganic matrix binder course can be formed, to promote hydrophilic
Vermiculite and hydrophobic adhesive are compatible.
Preferably, having used vacuum kneader to be modified vermiculite granule and adhesive, mixed glue.Vacuum kneader can
Modification, mixed glue with the completion of efficient uniform to vermiculite granule.
Preferably, in step C, used adjustable coating device die surface using the one-pass molding of scraper coating method at
Certain thickness vermiculite granule film paste.Adjustable coating device can scrape the vermiculite granule film paste of suitable thickness, effect
Rate is high, good evenness.
Preferably, in step C, after vermiculite granule paste is placed in mold, it is also necessary to dry；Drying temperature control
System is at 80 ± 5 DEG C, and humid control is below 10%.Predrying, Ke Yiyou are carried out to vermiculite granule paste before high-temperature molding
Effect avoids material inside because being rapidly heated, steam rapid expanding escapes the deformation and rupture for leading to material.
In conclusion have excellent high temperature resistant property the beneficial effects of the present invention are: having both intensity and flexibility,
Good seal performance is still maintained under 980 DEG C of superhigh temperature operating condition.
Specific embodiment
The present invention will be further described With reference to embodiment.
The present embodiment is a kind of preparation method of low loss composite filling heat-resisting material, is included the following steps:
A, it is mixed after crushing high-temperature expansion vermiculite and chemically expansible vermiculite by proper proportion；
A1, expanded vermiculite particle progress surface is modified；
B, vermiculite granule and appropriate adhesive are mixed into paste；
C, vermiculite granule paste is placed in mold, passes through high temperature and pressure sulfidization molding；
D, filler after molding is demoulded.
Wherein, the high-temperature expansion vermiculite in step A is prepared using microwave heating method；Vermiculite after expansion need to colloid mill into
Row processing obtains the expanded vermiculite particle that particle size range is 50~300um, and carries out using two stages of fine grinding after first roughly grinding
Processing.
Step A1 carries out surface modification to expanded vermiculite particle and has used silane coupling agent.
In step B, vacuum kneader is used to be modified vermiculite granule and adhesive, mixed glue.
In step C, adjustable coating device is used to use the one-pass molding of scraper coating method at certain thickness in die surface
Vermiculite granule film paste.After vermiculite granule paste is placed in mold, it is also necessary to dry；Drying temperature is controlled 80
± 5 DEG C, humid control is below 10%.
Low loss composite filling made of the material prepared in the method for this example, the technical indicator reached are as follows:
| Serial number | Project | Index value |
| 1 | Compression ratio | 35~55% |
| 2 | Rebound degree | ≥7% |
| 3 | Loss on ignition (800 DEG C) | ≤5% |
Claims (8)
1. a kind of preparation method of low loss composite filling heat-resisting material, characterized in that include the following steps:
A, it is mixed after crushing high-temperature expansion vermiculite and chemically expansible vermiculite by proper proportion；
B, vermiculite granule and appropriate adhesive are mixed into paste；
C, vermiculite granule paste is placed in mold, passes through high temperature and pressure sulfidization molding；
D, filler after molding is demoulded.
2. a kind of preparation method of low loss composite filling heat-resisting material according to claim 1, characterized in that step
High-temperature expansion vermiculite in rapid A is prepared using microwave heating method.
3. a kind of preparation method of low loss composite filling heat-resisting material according to claim 1 or 2, feature
It is that the size range value after expanded vermiculite crushes in step A is 50 ~ 300um.
4. a kind of preparation method of low loss composite filling heat-resisting material according to claim 1 or 2, feature
Be to be additionally provided with step A1 between step A and B: it is modified to carry out surface to expanded vermiculite particle.
5. a kind of preparation method of low loss composite filling heat-resisting material according to claim 4, characterized in that right
Expanded vermiculite particle carries out surface modification and has used silane coupling agent.
6. a kind of preparation method of low loss composite filling heat-resisting material according to claim 1 or 2, feature
It is in step B, vacuum kneader have been used to be modified vermiculite granule and adhesive, mixed glue.
7. a kind of preparation method of low loss composite filling heat-resisting material according to claim 1 or 2, feature
It is in step C, adjustable coating device have been used to use the one-pass molding of scraper coating method at certain thickness paste in die surface
Vermiculite granule film.
8. a kind of preparation method of low loss composite filling heat-resisting material according to claim 7, characterized in that step
In rapid C, after vermiculite granule paste is placed in mold, it is also necessary to dry；Drying temperature control is at 80 ± 5 DEG C, humidity control
System is below 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301121.4A CN109553328A (en) | 2018-11-02 | 2018-11-02 | The preparation method of low loss composite filling heat-resisting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301121.4A CN109553328A (en) | 2018-11-02 | 2018-11-02 | The preparation method of low loss composite filling heat-resisting material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109553328A true CN109553328A (en) | 2019-04-02 |
Family
ID=65865826
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811301121.4A Withdrawn CN109553328A (en) | 2018-11-02 | 2018-11-02 | The preparation method of low loss composite filling heat-resisting material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723923A (en) * | 2019-10-18 | 2020-01-24 | 武汉理工大学 | Preparation method of vermiculite-based flexible sealing material |
| CN115537181A (en) * | 2022-09-02 | 2022-12-30 | 浙江国泰萧星密封材料股份有限公司 | Talc-based high-temperature-resistant sealing material and preparation method thereof |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06506280A (en) * | 1991-03-22 | 1994-07-14 | エーシーエス・インダストリーズ・インコーポレーテッド | Catalytic converter and its manufacturing method |
| CN102167531A (en) * | 2011-03-07 | 2011-08-31 | 西南科技大学 | Method for preparing expanded vermiculite by utilizing ultrasonic pretreatment way |
| WO2011133778A3 (en) * | 2010-04-23 | 2012-02-23 | Unifrax I Llc | Multi-layer thermal insulation composite |
| CN107188453A (en) * | 2017-05-23 | 2017-09-22 | 武汉理工大学 | A kind of preparation method of vermiculite based high-temp-resistant encapsulant |
-
2018
- 2018-11-02 CN CN201811301121.4A patent/CN109553328A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06506280A (en) * | 1991-03-22 | 1994-07-14 | エーシーエス・インダストリーズ・インコーポレーテッド | Catalytic converter and its manufacturing method |
| WO2011133778A3 (en) * | 2010-04-23 | 2012-02-23 | Unifrax I Llc | Multi-layer thermal insulation composite |
| CN102167531A (en) * | 2011-03-07 | 2011-08-31 | 西南科技大学 | Method for preparing expanded vermiculite by utilizing ultrasonic pretreatment way |
| CN107188453A (en) * | 2017-05-23 | 2017-09-22 | 武汉理工大学 | A kind of preparation method of vermiculite based high-temp-resistant encapsulant |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723923A (en) * | 2019-10-18 | 2020-01-24 | 武汉理工大学 | Preparation method of vermiculite-based flexible sealing material |
| CN115537181A (en) * | 2022-09-02 | 2022-12-30 | 浙江国泰萧星密封材料股份有限公司 | Talc-based high-temperature-resistant sealing material and preparation method thereof |
| CN115537181B (en) * | 2022-09-02 | 2024-02-09 | 浙江国泰萧星密封材料股份有限公司 | Talc-based high-temperature-resistant sealing material and preparation method thereof |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
| CN115650632B (en) * | 2022-10-26 | 2023-10-31 | 河北慈宏新材料科技有限公司 | High-resistance Wen Zhidan-based composite sealing gasket and preparation method thereof |
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Application publication date: 20190402 |