CN110330745A - A kind of preparation method of the adhered PTFE oil sealing of automobile - Google Patents
A kind of preparation method of the adhered PTFE oil sealing of automobile Download PDFInfo
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- CN110330745A CN110330745A CN201910622117.6A CN201910622117A CN110330745A CN 110330745 A CN110330745 A CN 110330745A CN 201910622117 A CN201910622117 A CN 201910622117A CN 110330745 A CN110330745 A CN 110330745A
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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
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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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
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
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- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of preparation methods of the adhered PTFE oil sealing of automobile, include the following steps: the preparation of S1, Fluororubber paste；The processing of S2, metallic framework；The preparation of S3, adhesive tape fluorubber；The processing of S4, tetrafluoro piece；The vulcanization of S5, PTFE oil sealing is processed；Fluorubber parts by weight are 100 parts in the step S1；The vulcanizing agent be bisphenol AF be 1.8-2.5 parts, BPP is 0.4-0.8 parts；The activating agent is extra light calcined magnesia 6-15 parts and calcium hydroxide 2-5 parts；The reinforcing agent be alkaline white carbon black be 5-15 parts, ultra-fine barium sulfate is 15-30 parts；Structure of the invention is scientific and reasonable, it is safe and convenient to use, it is improved on the basis of being prepared to original common adhered oil sealing, a kind of special Fluororubber paste tackifier of overbrushing, then with the metallic framework of fluorubber, dipped glue, vulcanization is bonded at high temperature under high pressure together, this method bonding is firm, influenced by the external world small, rejection rate is low, improves the adhered oil sealing quality of PTFE.
Description
Technical field
The present invention relates to adhered PTFE oil seal technique field, the preparation of specially a kind of adhered PTFE oil sealing of automobile
Method.
Background technique
Oil sealing is the habit appellation of general sealing element, is briefly exactly the sealing of lubricating oil, it is for oil sealing rouge
Mechanical organ, the component for needing to lubricate in transmission parts is isolated with power output component for it, is unlikely to allow oil seepage, static seal
With dynamic sealing with sealing element oil sealing.
With the development of automobile industry, the requirement of higher revolving speed, more long life, PTFE are proposed to rotary shaft oil seal
Material is because it gains great popularity with low abrasion, good oil resistivity, high and low temperature resistance, but the disadvantage of PTFE cementability difference restricts
Its development.
Summary of the invention
The present invention provides a kind of preparation method of adhered PTFE oil sealing of automobile, can effectively solve above-mentioned background technique
The middle development proposed with automobile industry, proposes the requirement of higher revolving speed, more long life, PTFE material to rotary shaft oil seal
Expect to gain great popularity because of it with low abrasion, good oil resistivity, high and low temperature resistance, but the disadvantage of PTFE cementability difference restricts
The problem of it develops.
To achieve the above object, the invention provides the following technical scheme: a kind of preparation of the adhered PTFE oil sealing of automobile
Method includes the following steps:
The preparation of S1, Fluororubber paste: based on lower molecular weight virgin rubber fluorubber A, vulcanizing agent, activating agent, benefit are equipped with
Then strong agent is dissolved in organic solvent after mixed refining process obtains fluororubber compounded rubber with certain proportion；
The processing of S2, metallic framework: being handled skeleton with phosphating solution, the agent of fluorine glue sticking is then soaked, after drying tunnel baking
It is spare；
The preparation of S3, adhesive tape fluorubber: based on the fluorubber B of higher molecular weight, vulcanizing agent, activating agent, benefit are equipped with
Strong agent, processing aid are finally prepared into required adhesive tape by shearing by mixed refining process；
The processing of S4, tetrafluoro piece: first carrying out processing tetrafluoro thin slice with sodium naphthalene solution, and solvent degreasing is dried, and then tetrafluoro is viscous
Junction brushing fluororubber binding agent is dried, and special Fluororubber paste is finally coated；
The vulcanization of S5, PTFE oil sealing is processed: by processed PTFE thin slice, fluororubber compounded rubber B adhesive tape, processed gold
Category skeleton, which disposably vulcanizes, to be made.
According to the above technical scheme, fluorubber A is 246 type lower molecular weight ternary fluororubbers in the step S1, point
Son amount 5-10 ten thousand, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in the step S1；
The vulcanizing agent be bisphenol AF be 1.8-2.5 parts, BPP is 0.4-0.8 parts；
The activating agent is extra light calcined magnesia 6-15 parts and calcium hydroxide 2-5 parts；
The reinforcing agent be alkaline white carbon black be 5-15 parts, ultra-fine barium sulfate is 15-30 parts；
The organic solvent is one of methyl vinyl ketone, butanone, methanol, ethyl acetate or a variety of.
According to the above technical scheme, it is one or more of 512,0920,607 that fluorine glue is soaked in the step S2.
According to the above technical scheme, drying tunnel temperature is 150-220 DEG C in the step S2, and drying tunnel baking time is 15-30
Minute.
According to the above technical scheme, rubber B is 246 type higher molecular weight ternary fluororubbers, molecule in the step S3
Measure 15-30 ten thousand, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in the step S3；
The vulcanizing agent be bisphenol AF be 1.8-2.5 parts, BPP is 0.4-0.7 parts；
The activating agent is extra light calcined magnesia 2-5 parts and calcium hydroxide 4-7 parts；
The reinforcing agent be alkaline white carbon black be 5-10 parts, diatomite is 5-10 parts, 10-20 parts of calcium silicates.
According to the above technical scheme, fluororubber binding agent is 512,0920,607 in the step S4.
According to the above technical scheme, sulfide stress is 8-15MPa in the step S5, and temperature is 160-180 DEG C of temperature, when
Between be 5-15min.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use, to original
Have and improve on the basis of common adhered oil sealing preparation, a kind of special Fluororubber paste tackifier of overbrushing, then with fluorine rubber
The metallic framework of glue, dipped glue, vulcanization bonding at high temperature under high pressure together, this method bonding is firm, influenced by the external world it is small,
Rejection rate is low, improves the adhered oil sealing quality of PTFE.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is process step schematic diagram of the invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1: as shown in Figure 1, the present invention provides technical solution, a kind of preparation side of the adhered PTFE oil sealing of automobile
Method includes the following steps:
The preparation of S1, Fluororubber paste: based on lower molecular weight virgin rubber fluorubber A, vulcanizing agent, activating agent, benefit are equipped with
Then strong agent is dissolved in organic solvent after mixed refining process obtains fluororubber compounded rubber with certain proportion；
The processing of S2, metallic framework: being handled skeleton with phosphating solution, the agent of fluorine glue sticking is then soaked, after drying tunnel baking
It is spare；
The preparation of S3, adhesive tape fluorubber: based on the fluorubber B of higher molecular weight, vulcanizing agent, activating agent, benefit are equipped with
Strong agent, processing aid are finally prepared into required adhesive tape by shearing by mixed refining process；
The processing of S4, tetrafluoro piece: first carrying out processing tetrafluoro thin slice with sodium naphthalene solution, and solvent degreasing is dried, and then tetrafluoro is viscous
Junction brushing fluororubber binding agent is dried, and special Fluororubber paste is finally coated；
The vulcanization of S5, PTFE oil sealing is processed: by processed PTFE thin slice, fluororubber compounded rubber B adhesive tape, processed gold
Category skeleton, which disposably vulcanizes, to be made.
According to the above technical scheme, fluorubber A is 246 type lower molecular weight ternary fluororubbers, molecular weight in step S1
5-10 ten thousand, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S1；
Vulcanizing agent be bisphenol AF be 2.1 parts, BPP is 0.6 part；
Activating agent is 10 parts and 3 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 10 parts, ultra-fine barium sulfate is 25 parts；
Organic solvent is one of methyl vinyl ketone, butanone, methanol, ethyl acetate or a variety of.
According to the above technical scheme, it is one or more of 512,0920,607 that fluorine glue is soaked in step S2.
According to the above technical scheme, drying tunnel temperature is 200 DEG C in step S2, and drying tunnel baking time is 23 minutes.
According to the above technical scheme, rubber B is 246 type higher molecular weight ternary fluororubbers, molecular weight 15- in step S3
300000, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S3；
Vulcanizing agent be bisphenol AF be 2.2 parts, BPP is 0.6 part；
Activating agent is 3.5 parts and 6 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 8 parts, diatomite is 7 parts, 15 parts of calcium silicates.
According to the above technical scheme, fluororubber binding agent is 512,0920,607 in step S4.
According to the above technical scheme, sulfide stress is 12MPa in step S5, and temperature is 170 DEG C of temperature, time 10min.
Embodiment 2: as shown in Figure 1, the present invention provides technical solution, a kind of preparation side of the adhered PTFE oil sealing of automobile
Method includes the following steps:
The preparation of S1, Fluororubber paste: based on lower molecular weight virgin rubber fluorubber A, vulcanizing agent, activating agent, benefit are equipped with
Then strong agent is dissolved in organic solvent after mixed refining process obtains fluororubber compounded rubber with certain proportion；
The processing of S2, metallic framework: being handled skeleton with phosphating solution, the agent of fluorine glue sticking is then soaked, after drying tunnel baking
It is spare；
The preparation of S3, adhesive tape fluorubber: based on the fluorubber B of higher molecular weight, vulcanizing agent, activating agent, benefit are equipped with
Strong agent, processing aid are finally prepared into required adhesive tape by shearing by mixed refining process；
The processing of S4, tetrafluoro piece: first carrying out processing tetrafluoro thin slice with sodium naphthalene solution, and solvent degreasing is dried, and then tetrafluoro is viscous
Junction brushing fluororubber binding agent is dried, and special Fluororubber paste is finally coated；
The vulcanization of S5, PTFE oil sealing is processed: by processed PTFE thin slice, fluororubber compounded rubber B adhesive tape, processed gold
Category skeleton, which disposably vulcanizes, to be made.
According to the above technical scheme, fluorubber A is 246 type lower molecular weight ternary fluororubbers, molecular weight in step S1
5-10 ten thousand, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S1；
Vulcanizing agent be bisphenol AF be 1.9 parts, BPP is 0.6 part；
Activating agent is 10 parts and 3 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 12 parts, ultra-fine barium sulfate is 21 parts；
Organic solvent is one of methyl vinyl ketone, butanone, methanol, ethyl acetate or a variety of.
According to the above technical scheme, it is one or more of 512,0920,607 that fluorine glue is soaked in step S2.
According to the above technical scheme, drying tunnel temperature is 150 DEG C in step S2, and drying tunnel baking time is 30 minutes.
According to the above technical scheme, rubber B is 246 type higher molecular weight ternary fluororubbers, molecular weight 15- in step S3
300000, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S3；
Vulcanizing agent be bisphenol AF be 1.8 parts, BPP is 0.7 part；
Activating agent is 2 parts and 4 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 5 parts, diatomite is 5 parts, 10 parts of calcium silicates.
According to the above technical scheme, fluororubber binding agent is 512,0920,607 in step S4.
According to the above technical scheme, sulfide stress is 8MPa in step S5, and temperature is 160 DEG C of temperature, time 15min.
Embodiment 3: as shown in Figure 1, the present invention provides technical solution, a kind of preparation side of the adhered PTFE oil sealing of automobile
Method includes the following steps:
The preparation of S1, Fluororubber paste: based on lower molecular weight virgin rubber fluorubber A, vulcanizing agent, activating agent, benefit are equipped with
Then strong agent is dissolved in organic solvent after mixed refining process obtains fluororubber compounded rubber with certain proportion；
The processing of S2, metallic framework: being handled skeleton with phosphating solution, the agent of fluorine glue sticking is then soaked, after drying tunnel baking
It is spare；
The preparation of S3, adhesive tape fluorubber: based on the fluorubber B of higher molecular weight, vulcanizing agent, activating agent, benefit are equipped with
Strong agent, processing aid are finally prepared into required adhesive tape by shearing by mixed refining process；
The processing of S4, tetrafluoro piece: first carrying out processing tetrafluoro thin slice with sodium naphthalene solution, and solvent degreasing is dried, and then tetrafluoro is viscous
Junction brushing fluororubber binding agent is dried, and special Fluororubber paste is finally coated；
The vulcanization of S5, PTFE oil sealing is processed: by processed PTFE thin slice, fluororubber compounded rubber B adhesive tape, processed gold
Category skeleton, which disposably vulcanizes, to be made.
According to the above technical scheme, fluorubber A is 246 type lower molecular weight ternary fluororubbers, molecular weight in step S1
5-10 ten thousand, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S1；
Vulcanizing agent be bisphenol AF be 2.5 parts, BPP is 0.8 part；
Activating agent is 6 parts and 5 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 15 parts, ultra-fine barium sulfate is 15 parts；
Organic solvent is one of methyl vinyl ketone, butanone, methanol, ethyl acetate or a variety of.
According to the above technical scheme, it is one or more of 512,0920,607 that fluorine glue is soaked in step S2.
According to the above technical scheme, drying tunnel temperature is 220 DEG C in step S2, and drying tunnel baking time is 30 minutes.
According to the above technical scheme, rubber B is 246 type higher molecular weight ternary fluororubbers, molecular weight 15- in step S3
300000, molecular formula are as follows:
According to the above technical scheme, fluorubber parts by weight are 100 parts in step S3；
Vulcanizing agent be bisphenol AF be 2.5 parts, BPP is 0.4 part；
Activating agent is 2 parts and 7 parts of calcium hydroxide of extra light calcined magnesia；
Reinforcing agent be alkaline white carbon black be 10 parts, diatomite is 10 parts, 20 parts of calcium silicates.
According to the above technical scheme, fluororubber binding agent is 512,0920,607 in step S4.
According to the above technical scheme, sulfide stress is 15MPa in step S5, and temperature is 180 DEG C of temperature, time 5min.
It is compared by embodiment 1-3, following table is made:
| Comparison project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Anti-friction property | 0.02 | 0.03 | 0.02 |
| Single lip pressure-bearing | 1.50Mpa | 1.47Mpa | 1.43Mpa |
| High temperature resistant | 350 degree | 343 degree | 345 degree |
It is compared by embodiment 1-3 it is found that being most ideal, implementation in terms of anti-friction property, single lip pressure-bearing and high temperature resistant
Example 1 is suitble to promote the use of.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use, to original
Have and improve on the basis of common adhered oil sealing preparation, a kind of special Fluororubber paste tackifier of overbrushing, then with fluorine rubber
The metallic framework of glue, dipped glue, vulcanization bonding at high temperature under high pressure together, this method bonding is firm, influenced by the external world it is small,
Rejection rate is low, improves the adhered oil sealing quality of PTFE.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of preparation method of the adhered PTFE oil sealing of automobile, characterized by the following steps:
The preparation of S1, Fluororubber paste: based on lower molecular weight virgin rubber fluorubber A, being equipped with vulcanizing agent, activating agent, reinforcing agent,
After mixed refining process obtains fluororubber compounded rubber, then it is dissolved in organic solvent with certain proportion；
The processing of S2, metallic framework: being handled skeleton with phosphating solution, then soaks the agent of fluorine glue sticking, spare after drying tunnel baking；
The preparation of S3, adhesive tape fluorubber: based on the fluorubber B of higher molecular weight, be equipped with vulcanizing agent, activating agent, reinforcing agent,
Processing aid is finally prepared into required adhesive tape by shearing by mixed refining process；
The processing of S4, tetrafluoro piece: first carrying out processing tetrafluoro thin slice with sodium naphthalene solution, and solvent degreasing is dried, then tetrafluoro bonding plane
Brushing fluororubber binding agent is dried, and special Fluororubber paste is finally coated；
The vulcanization of S5, PTFE oil sealing is processed: by processed PTFE thin slice, fluororubber compounded rubber B adhesive tape, processed metal bone
Frame, which disposably vulcanizes, to be made.
2. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Fluorubber A is 246 type lower molecular weight ternary fluororubbers, molecular weight 5-10 ten thousand, molecular formula in rapid S1 are as follows:
3. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Fluorubber parts by weight are 100 parts in rapid S1；
The vulcanizing agent be bisphenol AF be 1.8-2.5 parts, BPP is 0.4-0.8 parts；
The activating agent is extra light calcined magnesia 6-15 parts and calcium hydroxide 2-5 parts；
The reinforcing agent be alkaline white carbon black be 5-15 parts, ultra-fine barium sulfate is 15-30 parts；
The organic solvent is one of methyl vinyl ketone, butanone, methanol, ethyl acetate or a variety of.
4. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Leaching fluorine glue is one or more of 512,0920,607 in rapid S2.
5. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Drying tunnel temperature is 150-220 DEG C in rapid S2, and drying tunnel baking time is 15-30 minutes.
6. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Rubber B is 246 type higher molecular weight ternary fluororubbers, molecular weight 15-30 ten thousand, molecular formula in rapid S3 are as follows:
7. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Fluorubber parts by weight are 100 parts in rapid S3；
The vulcanizing agent be bisphenol AF be 1.8-2.5 parts, BPP is 0.4-0.7 parts；
The activating agent is extra light calcined magnesia 2-5 parts and calcium hydroxide 4-7 parts；
The reinforcing agent be alkaline white carbon black be 5-10 parts, diatomite is 5-10 parts, 10-20 parts of calcium silicates.
8. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Fluororubber binding agent is 512,0920,607 in rapid S4.
9. a kind of preparation method of the adhered PTFE oil sealing of automobile according to claim 1, which is characterized in that the step
Sulfide stress is 8-15MPa in rapid S5, and temperature is 160-180 DEG C of temperature, time 5-15min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341956A (en) * | 2020-11-11 | 2021-02-09 | 青岛海力威新材料科技股份有限公司 | Heat vulcanization adhesive for fluororubber oil seal and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112341956A (en) * | 2020-11-11 | 2021-02-09 | 青岛海力威新材料科技股份有限公司 | Heat vulcanization adhesive for fluororubber oil seal and preparation method |
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Address after: 712000 west section of Jincheng Road, Xicheng District, Xingping City, Xianyang City, Shaanxi Province Applicant after: Shaanxi fenghang Technology Co.,Ltd. Address before: 712000 west section of Jincheng Road, Xicheng District, Xingping City, Xianyang City, Shaanxi Province Applicant before: SHAANXI FENGHANG RUBBER SEALING PARTS CO.,LTD. |
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