CN108676213A - Heat resistanceheat resistant collapsed seal circle and preparation method thereof - Google Patents
Heat resistanceheat resistant collapsed seal circle and preparation method thereof Download PDFInfo
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- CN108676213A CN108676213A CN201810488839.2A CN201810488839A CN108676213A CN 108676213 A CN108676213 A CN 108676213A CN 201810488839 A CN201810488839 A CN 201810488839A CN 108676213 A CN108676213 A CN 108676213A
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- heat resistanceheat
- resistanceheat resistant
- seal circle
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- 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
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a kind of heat resistanceheat resistant collapsed seal circle and preparation method thereof, which includes：1）Fypro, cyclodextrin, silane coupling agent and water are subjected to haptoreaction, then filter to take filtration cakes torrefaction so that modified polyamine fibre is made；2）Modified polyamine fibre, cobalt salt, alkali, urea and ethyl alcohol are subjected to solvent thermal reaction, then filter to take filter cake, is finally calcined in the presence of protecting gas so that composite polyamide fiber is made；3）Composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide are mixed so that improved composition is made；4）Butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, the improved composition are kneaded, are molded so that the heat resistanceheat resistant collapsed seal circle is made.There is excellent heat resistanceheat resistant shrinkage by sealing ring made from this method, while the preparation method has the advantages that process is simple and raw material is easy to get.
Description
Technical field
The present invention relates to sealing rings, and in particular, to a kind of heat resistanceheat resistant collapsed seal circle and preparation method thereof.
Background technology
Sealing element is generally made of rotating ring, stationary ring and sealing ring；Wherein sealing ring plays the sealing effect of sealing element
Vital effect.Sealing ring will generally meet the following conditions：High resilience and resilience；Mechanical strength appropriate, including
Tensile strength, elongation and tearing toughness etc.；It can stablize, be not easy to be swollen in the medium, thermal pinch（Joule effect）It is small；
Easy processing is molded, and can keep accurate size；Do not corrode contact surface, not pollution medium etc..
Currently, sealing element is divided according to material, it is close that NBR nitrile rubbers sealing ring, HNBR hydrogenated nitrile-butadiene rubbers can be divided into
Seal, FLS fluorine silicone rubber sealing ring, CR neoprene packing circles etc., although above-mentioned sealing element disclosure satisfy that production requirement substantially,
But the performance that the heat resistanceheat resistant of sealing element is shunk in certain specific environment is difficult to meet production requirement.
Invention content
The object of the present invention is to provide a kind of heat resistanceheat resistant collapsed seal circles and preparation method thereof, by being sealed made from this method
Circle has excellent heat resistanceheat resistant shrinkage, while the preparation method has the advantages that process is simple and raw material is easy to get.
To achieve the goals above, the present invention provides a kind of preparation method of heat resistanceheat resistant collapsed seal circle, the preparation methods
Including：
1）Fypro, cyclodextrin, silane coupling agent and water are subjected to haptoreaction, then filter to take filtration cakes torrefaction to be made
Modified polyamine fibre；
2）Modified polyamine fibre, cobalt salt, alkali, urea and ethyl alcohol are subjected to solvent thermal reaction, filter cake is then filtered to take, finally exists
It is calcined in the presence of protection gas composite polyamide fiber is made；
3）Composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide are mixed and changed with being made
Property composition；
4）By butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, described
Improved composition is kneaded, is molded so that the heat resistanceheat resistant collapsed seal circle is made.
The present invention also provides a kind of heat resistanceheat resistant collapsed seal circle, which passes through above-mentioned preparation method system
It is standby and obtain.
In the above-mentioned technical solutions, the present invention forms cyclodextrin by silane coupling agent on the surface of Fypro first
Clad then forms nanoflakes and cobalt hydroxide to obtain composite polyamide by solvent thermal reaction on the surface of cyclodextrin clad
Then fiber makes this by the combination of composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide
Composition can improve the heat resistanceheat resistant shrinkage of sealing ring, finally by butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum
Powder, zinc borate, white carbon, white oil, aluminium hydroxide, improved composition are kneaded, heat resistanceheat resistant collapsed seal circle can be made in molding；Simultaneously
The preparation method has the advantages that process is simple and raw material is easy to get.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of preparation method of heat resistanceheat resistant collapsed seal circle, which includes：
1）Fypro, cyclodextrin, silane coupling agent and water are subjected to haptoreaction, then filter to take filtration cakes torrefaction to be made
Modified polyamine fibre；
2）Modified polyamine fibre, cobalt salt, alkali, urea and ethyl alcohol are subjected to solvent thermal reaction, filter cake is then filtered to take, finally exists
It is calcined in the presence of protection gas composite polyamide fiber is made；
3）Composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide are mixed and changed with being made
Property composition；
4）By butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, described
Improved composition is kneaded, is molded so that the heat resistanceheat resistant collapsed seal circle is made.
In the step 1 of the present invention）In, the dosage of each material can select in a wide range, but in order to make sealing ring
With superior heat resistanceheat resistant shrinkage, it is preferable that in step 1）In, Fypro, cyclodextrin, silane coupling agent and water
Weight ratio is 30：10-15：5-10：150-300.
In the step 1 of the present invention）In, catalytic condition can select in a wide range, but in order to make sealing
Circle has superior heat resistanceheat resistant shrinkage, in step 1）In, the haptoreaction meets following the following conditions：Reaction temperature is
65-80 DEG C, reaction time 3-5h.
In the step 1 of the present invention）In, dry condition can select in a wide range, but in order to make sealing ring have
There is superior heat resistanceheat resistant shrinkage, it is preferable that in step 1）In, drying meets the following conditions：Drying temperature is 100-120
DEG C, drying time 4-6h.
In the step 2 of the present invention）In, the dosage of each material can select in a wide range, but in order to make sealing ring
With superior heat resistanceheat resistant shrinkage, it is preferable that in step 2）In, modified polyamine fibre, cobalt salt, alkali, urea and ethyl alcohol
Weight ratio be 50：10-14：30-60：15-20：150-300.
In the step 2 of the present invention）In, the condition of solvent thermal reaction can select in a wide range, but close in order to make
Seal has superior heat resistanceheat resistant shrinkage, it is preferable that in step 2）In, solvent thermal reaction meets following the following conditions：Instead
It is 120-140 DEG C to answer temperature, reaction time 8-16h.
In the step 2 of the present invention）In, the condition of calcining can select in a wide range, but in order to make sealing ring have
There is superior heat resistanceheat resistant shrinkage, it is preferable that in step 2）In, calcining meets following the following conditions：From 15-30 DEG C with 4.5-
5 DEG C/min is warming up to 280-300 DEG C and keeps the temperature 30-50min, be then cooled to 220-250 DEG C with 1.5-2 DEG C/min and keep the temperature
1.5-2h finally naturally cools to 15-30 DEG C.
In the step 3 of the present invention）In, the dosage of each material can select in a wide range, but in order to make sealing ring
With superior heat resistanceheat resistant shrinkage, it is preferable that in step 3）In, composite polyamide fiber, oyster shell whiting, attapulgite, sulphur
Sour barium whisker, rare earth oxide weight ratio be 30：8-15：35-45：3-5：15-20.
In the present invention, the type of silane coupling agent can select in a wide range, but in order to make sealing ring have
Superior heat resistanceheat resistant shrinkage, it is preferable that silane coupling agent is selected from vinyltriethoxysilane, vinyl trimethoxy silicon
At least one of alkane, vinyl three (beta-methoxy ethyoxyl) silane).
In the present invention, the type of cobalt salt can select in a wide range, but better in order to make sealing ring have
Heat resistanceheat resistant shrinkage, it is preferable that cobalt salt be cabaltous nitrate hexahydrate, cobalt chloride hexahydrate and Cobalt monosulfate heptahydrate.
In the present invention, the type of alkali can select in a wide range, but superior in order to make sealing ring have
Heat resistanceheat resistant shrinkage, it is preferable that alkali is selected from least one of sodium hydroxide, potassium hydroxide and ammonium hydroxide.
In the present invention, protect the type of gas that can select in a wide range, but it is better in order to make sealing ring have
Heat resistanceheat resistant shrinkage, it is preferable that protection gas is selected from helium, nitrogen, at least one of argon gas.
In the step 4 of the present invention）In, the dosage of each material can select in a wide range, but in order to make sealing ring
With superior heat resistanceheat resistant shrinkage, it is preferable that in step 4）In, the butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber,
Talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, improved composition weight ratio be 50：22-28：30-40：18-23：
6-9：3-10：60-70：12-18：18-25.
In the step 4 of the present invention）In, the time of mixing can select in a wide range, but in order to make sealing ring have
There is superior heat resistanceheat resistant shrinkage, it is preferable that the time of mixing is 40-60min.
The present invention also provides a kind of heat resistanceheat resistant collapsed seal circle, which passes through above-mentioned preparation method system
It is standby and obtain.
The present invention will be described in detail by way of examples below.
Embodiment 1
1）By Fypro, cyclodextrin, silane coupling agent（Vinyltriethoxysilane）With water according to 30：13：8：180
Weight ratio carries out haptoreaction（Reaction temperature is 70 DEG C, reaction time 4h）, then filter to take filtration cakes torrefaction（Drying temperature is
110 DEG C, drying time 5h）Modified polyamine fibre is made；
2）By the modified polyamine fibre, cobalt salt（Cabaltous nitrate hexahydrate）, alkali（Sodium hydroxide）, urea and ethyl alcohol is according to 50：
12：40：18：200 weight ratio carries out solvent thermal reaction（Reaction temperature is 130 DEG C, reaction time 12h）, then filter to take
Filter cake, finally in protection gas（Helium）In the presence of calcined（290 DEG C are warming up to 4.8 DEG C/min and keep the temperature from 18 DEG C
340min is then cooled to 230 DEG C with 1.8 DEG C/min and keeps the temperature 1.8h, finally naturally cools to 20 DEG C）Compound polyamides is made
Amine fiber；
3）By composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide（Samarium oxide）According to 30：
12：40：4：18 weight ratio is mixed so that improved composition A1 is made.
Embodiment 2
1）By Fypro, cyclodextrin, silane coupling agent（Vinyltrimethoxysilane）With water according to 30：10：5：150
Weight ratio carries out haptoreaction（Reaction temperature is 65 DEG C, reaction time 3h）, then filter to take filtration cakes torrefaction（Drying temperature is
100 DEG C, drying time 6h）Modified polyamine fibre is made；
2）By the modified polyamine fibre, cobalt salt（Cobalt chloride hexahydrate）, alkali（Potassium hydroxide）, urea and ethyl alcohol is according to 50：
10：30：15：150 weight ratio carries out solvent thermal reaction（Reaction temperature is 120 DEG C, reaction time 16h）, then filter to take
Filter cake, finally in protection gas（Nitrogen）In the presence of calcined（280 DEG C are warming up to 4.5 DEG C/min and keep the temperature from 15 DEG C
30min is then cooled to 220 DEG C with 1.5 DEG C/min and keeps the temperature 1.5h, finally naturally cools to 15 DEG C）Compound polyamides is made
Amine fiber；
3）By composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide（Yttrium oxide）According to 30：8：
35：3：15 weight ratio is mixed so that improved composition A2 is made.
Embodiment 3
1）By Fypro, cyclodextrin, silane coupling agent（Vinyl three (beta-methoxy ethyoxyl) silane)）With water according to 30：
15：10：300 weight ratio carries out haptoreaction（Reaction temperature is 80 DEG C, reaction time 3h）, then filter to take filtration cakes torrefaction
（Drying temperature is 120 DEG C, drying time 4h）Modified polyamine fibre is made；
2）By the modified polyamine fibre, cobalt salt（Cobalt monosulfate heptahydrate）, alkali（Ammonium hydroxide）, urea and ethyl alcohol is according to 50：14：
60：20：300 weight ratio carries out solvent thermal reaction（Reaction temperature is 140 DEG C, reaction time 8h）, filter cake is then filtered to take,
Finally in protection gas（Argon gas）In the presence of calcined（300 DEG C are warming up to 5 DEG C/min from 30 DEG C and keep the temperature 50min, then
It is cooled to 250 DEG C with 2 DEG C/min and keeps the temperature 2h, finally naturally cools to 30 DEG C）Composite polyamide fiber is made；
3）By composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide（Dysprosia）According to 30：
15：45：5：20 weight ratio is mixed so that improved composition A3 is made.
Comparative example 1
It carries out that improved composition B1 is made according to the method for embodiment 1, unlike, step 1）In be not used cyclodextrin.
Comparative example 2
It carries out that improved composition B2 is made according to the method for embodiment 1, unlike, step 2）In be not used cobalt salt.
Comparative example 3
It carries out that improved composition B5 is made according to the method for embodiment 1, unlike, step 2）Middle calcining is in 280-300
It is carried out at DEG C.
Comparative example 4
It carries out that improved composition B5 is made according to the method for embodiment 1, unlike, step 2）Middle calcining is in 220-250
It is carried out at DEG C.
Application examples 1
By butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, above-mentioned change
Property composition is according to 50：26：35：20：7：8：65：16：22 weight ratio carries out mixing 50min, then carry out extrusion molding with
Sealing ring is made；Wherein improved composition is not added in control group；Then the volume 1 for detecting sealing ring, then by above-mentioned sealing
It encloses at 200 DEG C and places 10h, then calculate the volume 2 at 200 DEG C of sealing ring, finally calculate percent thermal shrinkage, percent thermal shrinkage=
（Volume 1- volumes 2）/ volume 1 × 100%；Concrete outcome is shown in Table 1.
Table 1
| Composition | Percent thermal shrinkage/% |
| A1 | 0.3 |
| A2 | 0.5 |
| A3 | 0.4 |
| Nothing | 1.7 |
| B1 | 0.7 |
| B2 | 0.9 |
| B3 | 1.0 |
| B4 | 1.5 |
The preferred embodiment of the present invention has been described above in detail, still, the tool during present invention is not limited to the embodiments described above
Body details can carry out a variety of simple variants, these letters to technical scheme of the present invention within the scope of the technical concept of the present invention
Monotropic type all belongs to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of preparation method of heat resistanceheat resistant collapsed seal circle, which is characterized in that the preparation method includes：
1）Fypro, cyclodextrin, silane coupling agent and water are subjected to haptoreaction, then filter to take filtration cakes torrefaction to be made
Modified polyamine fibre；
2）The modified polyamine fibre, cobalt salt, alkali, urea and ethyl alcohol are subjected to solvent thermal reaction, then filter to take filter cake, most
It is calcined in the presence of protecting gas afterwards composite polyamide fiber is made；
3）The composite polyamide fiber, oyster shell whiting, attapulgite, barium sulfate crystal whisker, rare earth oxide are mixed to make
Obtain improved composition；
4）By butadiene-styrene rubber, ethylene propylene diene rubber, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, described
Improved composition is kneaded, is molded so that the heat resistanceheat resistant collapsed seal circle is made.
2. preparation method according to claim 1, wherein in step 1）In, the Fypro, cyclodextrin, silane
The weight ratio of coupling agent and water is 30：10-15：5-10：150-300.
3. preparation method according to claim 1, wherein in step 1）In, the haptoreaction meets following item
Part：Reaction temperature is 65-80 DEG C, reaction time 3-5h；
Preferably, the drying meets the following conditions：Drying temperature is 100-120 DEG C, drying time 4-6h.
4. preparation method according to claim 1, wherein in step 2）In, the modified polyamine fibre, cobalt salt, alkali,
The weight ratio of urea and ethyl alcohol is 50：10-14：30-60：15-20：150-300.
5. preparation method according to claim 1, wherein in step 2）In, the solvent thermal reaction meets following
Condition：Reaction temperature is 120-140 DEG C, reaction time 8-16h.
6. preparation method according to claim 1, wherein in step 2）In, the calcining meets following the following conditions：From
15-30 DEG C is warming up to 280-300 DEG C with 4.5-5 DEG C/min and keeps the temperature 30-50min, is then cooled to 220- with 1.5-2 DEG C/min
250 DEG C and 1.5-2h is kept the temperature, finally naturally cools to 15-30 DEG C.
7. preparation method according to claim 1, wherein in step 3）In, the composite polyamide fiber, oyster shell whiting,
Attapulgite, barium sulfate crystal whisker, rare earth oxide weight ratio be 30：8-15：35-45：3-5：15-20.
8. preparation method according to any one of claims 1-7, wherein the silane coupling agent is selected from vinyl three
At least one of Ethoxysilane, vinyltrimethoxysilane, vinyl three (beta-methoxy ethyoxyl) silane)；
Preferably, the cobalt salt is cabaltous nitrate hexahydrate, cobalt chloride hexahydrate and Cobalt monosulfate heptahydrate；
It is highly preferred that the alkali is selected from least one of sodium hydroxide, potassium hydroxide and ammonium hydroxide；
It is further preferred that the protection gas is selected from least one of helium, nitrogen, argon gas；
It is further preferred that the rare earth oxide in samarium oxide, yttrium oxide, europium oxide and dysprosia at least one
Person.
9. preparation method according to any one of claims 1-7, wherein in step 4）In, the butadiene-styrene rubber, three
First EP rubbers, fluorubber, talcum powder, zinc borate, white carbon, white oil, aluminium hydroxide, improved composition weight ratio be 50：
22-28：30-40：18-23：6-9：3-10：60-70：12-18：18-25；
Preferably, the time of the mixing is 40-60min.
10. a kind of heat resistanceheat resistant collapsed seal circle, which is characterized in that the heat resistanceheat resistant collapsed seal circle passes through arbitrary in claim 1-9
Preparation method described in one is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488839.2A CN108676213A (en) | 2018-05-21 | 2018-05-21 | Heat resistanceheat resistant collapsed seal circle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488839.2A CN108676213A (en) | 2018-05-21 | 2018-05-21 | Heat resistanceheat resistant collapsed seal circle and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108676213A true CN108676213A (en) | 2018-10-19 |
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ID=63807055
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| CN201810488839.2A Withdrawn CN108676213A (en) | 2018-05-21 | 2018-05-21 | Heat resistanceheat resistant collapsed seal circle and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496618A (en) * | 2023-04-26 | 2023-07-28 | 上海金发科技发展有限公司 | Nylon composition and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496674A (en) * | 1983-11-17 | 1985-01-29 | Armstrong World Industries, Inc. | Gasket materials comprising polyester and rice hulls |
| CN104910561A (en) * | 2015-06-13 | 2015-09-16 | 梁胜光 | Regenerated rubber sealing ring |
| CN106147048A (en) * | 2015-03-31 | 2016-11-23 | 3M创新有限公司 | Sealing compositions and application thereof |
-
2018
- 2018-05-21 CN CN201810488839.2A patent/CN108676213A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496674A (en) * | 1983-11-17 | 1985-01-29 | Armstrong World Industries, Inc. | Gasket materials comprising polyester and rice hulls |
| CN106147048A (en) * | 2015-03-31 | 2016-11-23 | 3M创新有限公司 | Sealing compositions and application thereof |
| CN104910561A (en) * | 2015-06-13 | 2015-09-16 | 梁胜光 | Regenerated rubber sealing ring |
Non-Patent Citations (1)
| Title |
|---|
| 兰州化学工业公司: "《合成橡胶工业手册》", 31 December 1991, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496618A (en) * | 2023-04-26 | 2023-07-28 | 上海金发科技发展有限公司 | Nylon composition and preparation method and application thereof |
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Application publication date: 20181019 |