CN109553817A - A kind of gasket and preparation method thereof for pump valve - Google Patents
A kind of gasket and preparation method thereof for pump valve Download PDFInfo
- Publication number
- CN109553817A CN109553817A CN201811651852.1A CN201811651852A CN109553817A CN 109553817 A CN109553817 A CN 109553817A CN 201811651852 A CN201811651852 A CN 201811651852A CN 109553817 A CN109553817 A CN 109553817A
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- parts
- agent
- pump valve
- gasket
- galapectite
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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
- C08L7/00—Compositions of natural rubber
-
- 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
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
Abstract
The present invention provides a kind of gasket and preparation method thereof for pump valve, it is related to gasket technical field, gasket includes the raw material of following parts by weight: 30-50 parts of natural rubber, 25-31 parts of chlorosulfonated polyethylene rubber, 13-21 parts of polyethylene, 17-21 parts of carbon black, 10-16 parts of magnesia, 0.3-0.5 parts of silicone oil, 6-12 parts of calcium oxide, 5-11 parts of diatomite, 4-8 parts of galapectite, 6-11 parts of zinc oxide, 0.3-0.7 parts of dispersing agent, 0.1-0.5 parts of anti-aging agent, 0.2-0.4 parts of coupling agent and 0.8-1.2 parts of release agent；Preparation method includes weighing raw material, screening, mixing, mixing and extrusion molding.High-temperature resistant coating produced by the present invention has the advantages that good corrosion resistance and resistant to high temperature.
Description
Technical field
The invention belongs to gasket technical fields, and in particular to a kind of gasket and preparation method thereof for pump valve.
Background technique
Pump valve is important delivery equipment, in order to guarantee the normal operation of pump valve, needs to reinforce its leakproofness, and
Gasket is the critical component of pump valve seal, and a large amount of heat that pump valve can generate when working causes temperature on pump valve higher, existing
Some gaskets performance in high temperature resistant is poor, additionally due to pump valve is also used for the conveying of some waste water, existing gasket exists
Performance is weaker in corrosion resistance, and therefore, it is necessary to develop a kind of high temperature resistants, the corrosion resistant gasket for pump valve.
Summary of the invention
To solve the above-mentioned problems, the gasket and preparation method thereof that the present invention provides a kind of for pump valve.
The present invention provides the following technical solutions:
A kind of gasket for pump valve, the raw material including following parts by weight: 30-50 parts of natural rubber, chlorosulfonation are poly-
25-31 parts of ethylene rubber, 13-21 parts of polyethylene, 17-21 parts of carbon black, 10-16 parts of magnesia, 0.3-0.5 parts of silicone oil, calcium oxide
6-12 parts, 5-11 parts of diatomite, 4-8 parts of galapectite, 6-11 parts of zinc oxide, 0.3-0.7 parts of dispersing agent, 0.1-0.5 parts of anti-aging agent,
0.2-0.4 parts and release agent 0.8-1.2 parts of coupling agent.
Further, the raw material including following parts by weight: 32 parts of natural rubber, gathers at 26 parts of chlorosulfonated polyethylene rubber
15 parts of ethylene, 18 parts of carbon black, 12 parts of magnesia, 0.4 part of silicone oil, 8 parts of calcium oxide, 7 parts of diatomite, 5 parts of galapectite, zinc oxide 6
Part, 0.5 part of dispersing agent, 0.3 part of anti-aging agent, 0.2 part of coupling agent and 0.8 part of release agent.
Further, the raw material including following parts by weight: 39 parts of natural rubber, gathers at 27 parts of chlorosulfonated polyethylene rubber
18 parts of ethylene, 19 parts of carbon black, 13 parts of magnesia, 0.4 part of silicone oil, 8 parts of calcium oxide, 9 parts of diatomite, 5 parts of galapectite, zinc oxide 9
Part, 0.7 part of dispersing agent, 0.2 part of anti-aging agent, 0.3 part of coupling agent and 0.9 part of release agent.
Further, the raw material including following parts by weight: 40 parts of natural rubber, gathers at 28 parts of chlorosulfonated polyethylene rubber
17 parts of ethylene, 19 parts of carbon black, 13 parts of magnesia, 0.4 part of silicone oil, 9 parts of calcium oxide, 8 parts of diatomite, 6 parts of galapectite, zinc oxide
8.5 parts, 0.5 part of dispersing agent, 0.3 part of anti-aging agent, 0.3 part of coupling agent and 1 part of release agent.
Further, the coupling agent is titanate coupling agent or aluminate coupling agent.
Further, the partial size of the graphite powder is 60-80 μm.
Further, the release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the parts by weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
Specific embodiment
Embodiment 1
A kind of gasket for pump valve, the raw material including following weight: natural rubber 30kg, chlorosulfonated polyethylene rubber
25kg, polyethylene 13kg, carbon black 17kg, magnesia 10kg, silicone oil 0.3kg, calcium oxide 6kg, diatomite 5kg, galapectite 4kg,
Zinc oxide 6kg, dispersing agent 0.3kg, anti-aging agent 0.1kg, coupling agent 0.2kg and release agent 0.8kg.
Coupling agent is titanate coupling agent or aluminate coupling agent.
The partial size of graphite powder is 60-80 μm.
Release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
Embodiment 2
A kind of gasket for pump valve, the raw material including following weight: natural rubber 50kg, chlorosulfonated polyethylene rubber
31kg, polyethylene 21kg, carbon black 21kg, magnesia 16kg, silicone oil 0.5kg, calcium oxide 12kg, diatomite 11kg, galapectite
8kg, zinc oxide 11kg, dispersing agent 0.7kg, anti-aging agent 0.5kg, coupling agent 0.4kg and release agent 1.2kg.
Coupling agent is titanate coupling agent or aluminate coupling agent.
The partial size of graphite powder is 60-80 μm.
Release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
Embodiment 3
A kind of gasket for pump valve, the raw material including following weight: natural rubber 32kg, chlorosulfonated polyethylene rubber
26kg, polyethylene 15kg, carbon black 18kg, magnesia 12kg, silicone oil 0.4kg, calcium oxide 8kg, diatomite 7kg, galapectite 5kg,
Zinc oxide 6kg, dispersing agent 0.5kg, anti-aging agent 0.3kg, coupling agent 0.2kg and release agent 0.8kg.
Coupling agent is titanate coupling agent or aluminate coupling agent.
The partial size of graphite powder is 60-80 μm.
Release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
Embodiment 4
A kind of gasket for pump valve, the raw material including following weight: natural rubber 39kg, chlorosulfonated polyethylene rubber
27kg, polyethylene 18kg, carbon black 19kg, magnesia 13kg, silicone oil 0.4kg, calcium oxide 8kg, diatomite 9kg, galapectite 5kg,
Zinc oxide 9kg, dispersing agent 0.7kg, anti-aging agent 0.2kg, coupling agent 0.3kg and release agent 0.9kg.
Coupling agent is titanate coupling agent or aluminate coupling agent.
The partial size of graphite powder is 60-80 μm.
Release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
Embodiment 5
A kind of gasket for pump valve, the raw material including following weight: natural rubber 40kg, chlorosulfonated polyethylene rubber
28kg, polyethylene 17kg, carbon black 19kg, magnesia 13kg, silicone oil 0.4kg, calcium oxide 9kg, diatomite 8kg, galapectite 6kg,
Zinc oxide 8.5kg, dispersing agent 0.5kg, anti-aging agent 0.3kg, coupling agent 0.3kg and release agent 1kg.
Coupling agent is titanate coupling agent or aluminate coupling agent.
The partial size of graphite powder is 60-80 μm.
Release agent is polyethylene glycol.
A kind of preparation method of the gasket for pump valve, comprising the following steps:
(1) raw material is weighed according to the weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out partial size model
It is trapped among the galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, under 60-75 DEG C of environment
35-50min are stirred, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3),
Magnesia, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer, i.e.,
Obtain mixture B；
(5) the mixture B double screw extruder in step (4) is squeezed out at 250-300 DEG C, mold machine-shaping, i.e.,
It must be used for the gasket of pump valve.
Compared with prior art, the beneficial effects of the present invention are: the gasket produced by the present invention for pump valve is with resistance to
The advantages of corrosivity is good, high temperature resistant and the preparation method are simple, convenient for operating.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of gasket for pump valve, which is characterized in that the raw material including following parts by weight: 30-50 parts of natural rubber,
25-31 parts of chlorosulfonated polyethylene rubber, 13-21 parts of polyethylene, 17-21 parts of carbon black, 10-16 parts of magnesia, silicone oil 0.3-0.5
Part, 6-12 parts of calcium oxide, 5-11 parts of diatomite, 4-8 parts of galapectite, 6-11 parts of zinc oxide, 0.3-0.7 parts of dispersing agent, anti-aging agent
0.1-0.5 parts, 0.2-0.4 parts of coupling agent and 0.8-1.2 parts of release agent.
2. the gasket according to claim 1 for pump valve, which is characterized in that the raw material including following parts by weight:
32 parts of natural rubber, 26 parts of chlorosulfonated polyethylene rubber, 15 parts of polyethylene, 18 parts of carbon black, 12 parts of magnesia, 0.4 part of silicone oil, oxygen
Change 8 parts of calcium, 7 parts of diatomite, 5 parts of galapectite, 6 parts of zinc oxide, 0.5 part of dispersing agent, 0.3 part of anti-aging agent, 0.2 part of coupling agent and takes off
0.8 part of mould agent.
3. the gasket according to claim 1 for pump valve, which is characterized in that the raw material including following parts by weight:
39 parts of natural rubber, 27 parts of chlorosulfonated polyethylene rubber, 18 parts of polyethylene, 19 parts of carbon black, 13 parts of magnesia, 0.4 part of silicone oil, oxygen
Change 8 parts of calcium, 9 parts of diatomite, 5 parts of galapectite, 9 parts of zinc oxide, 0.7 part of dispersing agent, 0.2 part of anti-aging agent, 0.3 part of coupling agent and takes off
0.9 part of mould agent.
4. the gasket according to claim 1 for pump valve, which is characterized in that the raw material including following parts by weight:
40 parts of natural rubber, 28 parts of chlorosulfonated polyethylene rubber, 17 parts of polyethylene, 19 parts of carbon black, 13 parts of magnesia, 0.4 part of silicone oil, oxygen
Change 9 parts of calcium, 8 parts of diatomite, 6 parts of galapectite, 8.5 parts of zinc oxide, 0.5 part of dispersing agent, 0.3 part of anti-aging agent, 0.3 part of coupling agent and
1 part of release agent.
5. the gasket according to claim 1 for pump valve, it is characterised in that: the coupling agent is titanate coupling agent
Or aluminate coupling agent.
6. the gasket according to claim 1 for pump valve, it is characterised in that: the partial size of the graphite powder is 60-80 μ
m。
7. the gasket according to claim 1 for pump valve, it is characterised in that: the release agent is polyethylene glycol.
8. a kind of preparation method of the gasket for pump valve as described in claim 1-7 any one, which is characterized in that
The following steps are included:
(1) raw material is weighed according to the parts by weight of the sealing cushion raw material for pump valve；
(2) galapectite is calcined at 450-500 DEG C 3-5h, takes out, cool down, be ground into a powder, screening, filters out particle size range and exist
The galapectite powder of 300-400 mesh；
(3) natural rubber, chlorosulfonated polyethylene rubber, polyethylene and carbon black are mixed, are stirred under 60-75 DEG C of environment
35-50min, up to mixture A；
(4) galapectite powder of the particle size range in 300-400 mesh will be filtered out in step (2), the mixture A in step (3), oxidation
Magnesium, silicone oil, calcium oxide, diatomite, zinc oxide, dispersing agent, anti-aging agent, coupling agent and release agent are sent into mixer to get mixed
Close object B；
(5) by the mixture B double screw extruder in step (4) 250-300 DEG C squeeze out, mold machine-shaping to get with
In the gasket of pump valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651852.1A CN109553817A (en) | 2018-12-31 | 2018-12-31 | A kind of gasket and preparation method thereof for pump valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651852.1A CN109553817A (en) | 2018-12-31 | 2018-12-31 | A kind of gasket and preparation method thereof for pump valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109553817A true CN109553817A (en) | 2019-04-02 |
Family
ID=65872270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811651852.1A Pending CN109553817A (en) | 2018-12-31 | 2018-12-31 | A kind of gasket and preparation method thereof for pump valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN109553817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982129A (en) * | 2019-12-27 | 2020-04-10 | 安徽银龙泵阀股份有限公司 | Wear-resistant pump valve sealing gasket material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044830A (en) * | 2012-11-25 | 2013-04-17 | 马鞍山市中澜橡塑制品有限公司 | Sealing rubber for butterfly valve and preparation method thereof |
| CN103436029A (en) * | 2013-07-16 | 2013-12-11 | 安徽省天马泵阀集团有限公司 | High-temperature resistant anti-corrosion pump valve sealing gasket and preparation method thereof |
| CN107857909A (en) * | 2017-12-12 | 2018-03-30 | 宣城市健龙橡塑密封件有限公司 | A kind of check-valves elastomeric material and preparation method thereof |
| CN108641152A (en) * | 2018-05-16 | 2018-10-12 | 安徽三环水泵有限责任公司 | A kind of creep resisting pump valve seal pad of anti-corrosion |
-
2018
- 2018-12-31 CN CN201811651852.1A patent/CN109553817A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044830A (en) * | 2012-11-25 | 2013-04-17 | 马鞍山市中澜橡塑制品有限公司 | Sealing rubber for butterfly valve and preparation method thereof |
| CN103436029A (en) * | 2013-07-16 | 2013-12-11 | 安徽省天马泵阀集团有限公司 | High-temperature resistant anti-corrosion pump valve sealing gasket and preparation method thereof |
| CN107857909A (en) * | 2017-12-12 | 2018-03-30 | 宣城市健龙橡塑密封件有限公司 | A kind of check-valves elastomeric material and preparation method thereof |
| CN108641152A (en) * | 2018-05-16 | 2018-10-12 | 安徽三环水泵有限责任公司 | A kind of creep resisting pump valve seal pad of anti-corrosion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982129A (en) * | 2019-12-27 | 2020-04-10 | 安徽银龙泵阀股份有限公司 | Wear-resistant pump valve sealing gasket material |
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Application publication date: 20190402 |
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