Reciprocating sealing ring with reinforced framework and preparation method of reciprocating sealing ring

Abstract

The invention relates to the technical field of sealing rings, in particular to a preparation method of a reciprocating sealing ring with a reinforced framework, which comprises the following steps: weighing polytetrafluoroethylene, polyether-ether-ketone, fluororubber, silicone rubber, an anti-aging agent, a plasticizer, a vulcanizing agent, an accelerant, carbon black and a filler according to the weight parts of raw materials, and adding the raw materials into an internal mixer for internal mixing; the framework and the metal ring pipe are placed into a mold, the mixture in the first step is added into the mold, cooling forming is carried out, and the formed sealing ring is shaped and trimmed to obtain the reciprocating sealing ring. Through the synergistic effect of polytetrafluoroethylene, polyether-ether-ketone, fluororubber, silicone rubber and auxiliaries, the friction resistance of the reciprocating sealing ring can be greatly improved, effective sealing is ensured, and meanwhile the service life of the sealing ring is prolonged; on the other hand, the sufficient rigidity or stability of the sealing ring can be ensured through the synergistic effect of the framework and the metal ring pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing rings, in particular to a reciprocating sealing ring with a reinforcing skeleton and a preparation method thereof. Background Art

[0002] As a common sealing element, the rectangular sealing ring is widely used in static sealing scenarios such as hydraulic systems, filters, electronic devices, and heavy-duty electrical connectors due to the advantages of its cross-sectional shape. Its core advantages include a relatively high sealing pressure (up to 50 MPa), strong anti-extrusion performance (no additional retaining rings are required), good cross-sectional stability (not easily distorted or deformed after installation), and a relatively slow aging rate, making it perform better than traditional O-rings under working conditions of high pressure, frequent pulses, or alternating stresses. For example, in filters, the rectangular sealing ring can effectively avoid medium leakage problems caused by pressure fluctuations and reduce the risk of extrusion damage caused by vibration. However, in dynamic sealing scenarios, the performance of existing rectangular sealing rings is limited, and they are prone to sealing failure due to friction or deformation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a reciprocating sealing ring with a reinforcing skeleton and a preparation method thereof to solve the above problems.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a reciprocating sealing ring with a reinforcing skeleton, comprising the following components in parts by weight: Polytetrafluoroethylene 70 - 85 parts Polyetheretherketone 8 - 16 parts Fluororubber 10 - 15 parts Silicone rubber 10 - 20 parts Antioxidant 1.2 - 1.8 parts Plasticizer 3 - 5 parts Vulcanizing agent 1 - 2 parts Accelerator 1 - 2 parts Carbon black 12 - 20 parts Filler 15 - 20 parts.

[0005] As a further aspect of the present invention, the antioxidant is antioxidant RD or antioxidant D or antioxidant 264.

[0006] As a further aspect of the present invention, the plasticizer is epoxidized soybean oil.

[0007] As a further aspect of the present invention, the vulcanizing agent is dicumyl peroxide or bis(tert-butylperoxy)diisopropylbenzene.

[0008] As a further aspect of the present invention, the accelerator is one or more of accelerator TMTD or accelerator MBTS or accelerator MBT.

[0009] As a further solution of the present invention, the filler comprises the following components in parts by weight: 20-30 parts of aluminum hydroxide powder, 40-50 parts of silicon nitride, and 35-55 parts of sodium carbonate.

[0010] As a further solution of the present invention, a skeleton is provided in the middle of the reciprocating seal ring body, concave cavities are provided on the left and right sides of the reciprocating seal ring body, chamfers are provided at the four vertices of the reciprocating seal ring body, and metal ring pipes are provided at the four vertices of the reciprocating seal ring body.

[0011] As a further solution of the present invention, the shape of the skeleton is "I" shaped.

[0012] As a further solution of the present invention, the metal ring pipe is located at the center of the chamfer, and the metal ring pipe is filled with compressible inert gas.

[0013] A preparation method of a reciprocating seal ring with a reinforced skeleton is as follows: Step 1, weigh polytetrafluoroethylene, polyether ether ketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the parts by weight of the raw materials, and add the raw materials into a mixer for mixing. Step 2, place the skeleton and the metal ring pipe into a mold. Step 3, add the mixture in Step 1 into the mold, cool and form, and the formed seal ring is the reciprocating seal ring after being shaped and trimmed.

[0014] Since the present invention adopts the above technical solution, the advantages and positive effects of the present invention are: through the synergistic effect of polytetrafluoroethylene, polyether ether ketone, fluororubber, silicone rubber and additives, the friction resistance of the reciprocating seal ring can be greatly improved, ensuring effective sealing while prolonging the service life of the seal ring; on the other hand, through the synergistic effect of the skeleton and the metal ring pipe, the sufficient rigidity or stability of the seal ring can be ensured. Description of the Drawings

[0015] Figure 1 is the front view of the reciprocating seal ring body.

[0016] Figure 2 is the cross-sectional view of the reciprocating seal ring body.

[0017] In the figure: 1 is the reciprocating seal ring body, 2 is the skeleton, 3 is the cavity, and 4 is the metal ring pipe. Detailed Embodiments

[0018] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Example 1 The present invention relates to a reciprocating sealing ring with a reinforced skeleton, which comprises the following components in parts by weight: 70 parts of polytetrafluoroethylene 8 parts of polyetheretherketone 10 parts of fluororubber 10 parts of silicone rubber 1.2 parts of antioxidant 3 parts of plasticizer 1 part of vulcanizing agent 1 part of accelerator 12 parts of carbon black 15 parts of filler; Among them, the antioxidant is antioxidant RD; the plasticizer is epoxidized soybean oil; the vulcanizing agent is dicumyl peroxide; the accelerator is accelerator TMTD; the filler comprises the following components in parts by weight: 20 parts of aluminum hydroxide powder, 40 parts of silicon nitride, and 35 parts of sodium carbonate.

[0020] Furthermore, as Figures 1 - 2 shown, a skeleton 2 is provided in the middle of the reciprocating sealing ring body 1. Concave cavities 3 are provided on the left and right sides of the reciprocating sealing ring body 1. Chamfers are provided at the four vertices of the reciprocating sealing ring body 1, and metal ring pipes 4 are provided at the four vertices of the reciprocating sealing ring body 1.

[0021] Furthermore, the shape of the skeleton 2 is "I"-shaped.

[0022] Furthermore, the metal ring pipe 4 is located at the center of the chamfer, and the metal ring pipe 4 is filled with compressible inert gas.

[0023] A preparation method of a reciprocating sealing ring with a reinforced skeleton is as follows: Step 1, weigh polytetrafluoroethylene, polyetheretherketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the parts by weight of the raw materials, and add the raw materials into a mixer for mixing; Step 2, place the skeleton and the metal ring pipe into a mold; Step 3, add the mixture in Step 1 into the mold, cool and form, and the formed sealing ring is the reciprocating sealing ring after being shaped and trimmed.

[0024] Example 2 The present invention relates to a reciprocating sealing ring with a reinforced skeleton, which comprises the following components in parts by weight: 75 parts of polytetrafluoroethylene 10 parts of polyetheretherketone 12 parts of fluororubber 14 parts of silicone rubber 1.4 parts of antioxidant 3.6 parts of plasticizer 1.3 parts of vulcanizing agent 1 - 2 parts of accelerator 15 parts of carbon black 16 parts of filler; Among them, the antioxidant is antioxidant D; the plasticizer is epoxy soybean oil; the vulcanizing agent is ditert-butyl peroxide diisopropylbenzene; the accelerator is accelerator MBTS; the filler includes the following components in parts by weight: 24 parts of aluminum hydroxide powder, 44 parts of silicon nitride, and 40 parts of sodium carbonate.

[0025] Furthermore, in the present invention, as Figures 1 - 2 shown, a skeleton 2 is provided in the middle of the reciprocating seal ring body 1, concave cavities 3 are provided on the left and right sides of the reciprocating seal ring body 1, chamfers are provided at the four vertices of the reciprocating seal ring body 1, and metal ring pipes 4 are provided at the four vertices of the reciprocating seal ring body 1.

[0026] Furthermore, in the present invention, the shape of the skeleton 2 is "I"-shaped.

[0027] Furthermore, in the present invention, the metal ring pipe 4 is located at the center of the chamfer, and the metal ring pipe 4 is filled with compressible inert gas.

[0028] A preparation method of a reciprocating seal ring with a reinforced skeleton is as follows: Step 1, weigh polytetrafluoroethylene, polyetheretherketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the parts by weight of the raw materials, and add the raw materials into a mixer for mixing. Step 2, place the skeleton and the metal ring pipe into a mold. Step 3, add the mixture in Step 1 into the mold, cool and form, and the formed seal ring is the reciprocating seal ring after being shaped and trimmed.

[0029] Example 3 A reciprocating seal ring with a reinforced skeleton according to the present invention includes the following components in parts by weight: 80 parts of polytetrafluoroethylene 12 parts of polyetheretherketone 14 parts of fluororubber l8 parts of silicone rubber 1.6 parts of antioxidant 4.5 parts of plasticizer 1.7 parts of vulcanizing agent 1.6 parts of accelerator 18 parts of carbon black 18 parts of filler; Among them, the antioxidant is antioxidant 264; the plasticizer is epoxy soybean oil; the vulcanizing agent is bis(tert-butylperoxy)diisopropylbenzene; the accelerator is accelerator MBT; the filler includes the following components in parts by weight: 27 parts of aluminum hydroxide powder, 48 parts of silicon nitride, and 48 parts of sodium carbonate.

[0030] Furthermore, in the present invention, as Figures 1 - 2 shown, a skeleton 2 is provided in the middle of the reciprocating seal ring body 1, concave cavities 3 are provided on the left and right sides of the reciprocating seal ring body 1, chamfers are provided at the four vertices of the reciprocating seal ring body 1, and metal ring tubes 4 are provided at the four vertices of the reciprocating seal ring body 1.

[0031] Furthermore, in the present invention, the shape of the skeleton 2 is "I"-shaped.

[0032] Furthermore, in the present invention, the metal ring tube 4 is located at the center of the chamfer, and the metal ring tube 4 is filled with compressible inert gas.

[0033] A preparation method of a reciprocating seal ring with a reinforcing skeleton is as follows: Step 1, weigh polytetrafluoroethylene, polyetheretherketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the parts by weight of the raw materials, and add the raw materials into a mixer for mixing. Step 2, place the skeleton and the metal ring tube into a mold. Step 3, add the mixture in Step 1 into the mold, cool and form, and the formed seal ring is the reciprocating seal ring after trimming.

[0034] Example 4 A reciprocating seal ring with a reinforcing skeleton of the present invention includes the following components in parts by weight: Polytetrafluoroethylene 85 parts Polyetheretherketone 16 parts Fluororubber 15 parts Silicone rubber 20 parts Antioxidant 1.8 parts Plasticizer 5 parts Vulcanizing agent 2 parts Accelerator 2 parts Carbon black 20 parts Filler 20 parts; Among them, the antioxidant is antioxidant RD;; the plasticizer is epoxy soybean oil; the vulcanizing agent is diisopropylbenzene peroxide; the accelerators are accelerator TMTD, accelerator MBTS, and accelerator MBT, and the weight ratio of accelerator TMTD, accelerator MBTS, and accelerator MBT is 1:1:1; the filler includes the following components in parts by weight: 30 parts of aluminum hydroxide powder, 50 parts of silicon nitride, and 55 parts of sodium carbonate.

[0035] Furthermore, as for the present invention, Figures 1 - 2 As shown, a skeleton 2 is provided in the middle of the reciprocating sealing ring body 1. Concave cavities 3 are provided on the left and right sides of the reciprocating sealing ring body 1. Chamfers are provided at the four vertices of the reciprocating sealing ring body 1, and metal ring tubes 4 are provided at the four vertices of the reciprocating sealing ring body 1.

[0036] Furthermore, the shape of the skeleton 2 is "I"-shaped.

[0037] Furthermore, the metal ring tubes 4 are located at the centers of the chamfers, and the metal ring tubes 4 are all filled with compressible inert gas.

[0038] A preparation method of a reciprocating sealing ring with a reinforced skeleton is as follows: Step 1: Weigh polytetrafluoroethylene, polyetheretherketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the weight parts of the raw materials, and add the raw materials into a mixer for mixing. [[ID=!5]]Step 2: Place the skeleton and the metal ring tubes into a mold. Step 3: Add the mixture in Step 1 into the mold, cool and form. After shaping and trimming the formed sealing ring, it is the reciprocating sealing ring.

[0039] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples. Various changes or modifications can be made to these embodiments without departing from the principle and essence of the present invention. The protection scope of the present invention is only defined by the appended claims.

Claims

1. A reciprocating sealing ring with a reinforced skeleton, characterized in that: It comprises the following components in parts by weight: Polytetrafluoroethylene 70 - 85 parts Polyetheretherketone 8 - 16 parts Fluororubber 10 - 15 parts Silicone rubber 10 - 20 parts Antioxidant 1.2 - 1.8 parts Plasticizer 3 - 5 parts Vulcanizing agent 1 - 2 parts Accelerator 1 - 2 parts Carbon black 12 - 20 parts Filler 15 - 20 parts.

2. The reciprocating sealing ring with a reinforcing skeleton according to claim 1, characterized in that: The antioxidant is antioxidant RD or antioxidant D or antioxidant 264.

3. The reciprocating sealing ring with a reinforcing skeleton according to claim 1, characterized in that: The plasticizer is epoxidized soybean oil.

4. A reciprocating sealing ring with a reinforced skeleton according to claim 1, characterized in that: The vulcanizing agent is dicumyl peroxide or 2,5 - dimethyl - 2,5 - di(tert - butylperoxy)hexane.

5. The reciprocating sealing ring with a reinforcing skeleton according to claim 1 is characterized in that: The accelerator is one or several of accelerator TMTD or accelerator MBTS or accelerator MBT.

6. The reciprocating sealing ring with a reinforcing skeleton according to claim 1, characterized in that: The filler comprises the following components in parts by weight: aluminum hydroxide powder 20 - 30 parts, silicon nitride 40 - 50 parts, sodium carbonate 35 - 55 parts.

7. The reciprocating sealing ring with a reinforcing skeleton according to claim 1 is characterized in that: reciprocating In the middle of the seal ring body (1), there is a skeleton (2). On the left and right sides of the reciprocating seal ring body (1), there are concave cavities (3). At the four vertices of the reciprocating seal ring body (1), there are chamfers, and at the four vertices of the reciprocating seal ring body (1), there are metal ring tubes (4).

8. A reciprocating sealing ring with a reinforcing skeleton and a preparation method thereof according to claim 1, characterized in that: The shape of the skeleton (2) is "I" - shaped.

9. A reciprocating sealing ring with a reinforcing skeleton and a preparation method thereof according to claim 1, characterized in that: The metal ring tube (4) is located at the center of the chamfer, and the inside of the metal ring tube (4) is filled with compressible inert gas.

10. The preparation method of a reciprocating sealing ring with a reinforced skeleton according to any one of claims 1-9, characterized in that: Specific steps are as follows: Step 1, weigh polytetrafluoroethylene, polyetheretherketone, fluororubber, silicone rubber, antioxidant, plasticizer, vulcanizing agent, accelerator, carbon black, and filler according to the parts by weight of the raw materials, and add the raw materials into a mixer for mixing; Step 2, place the skeleton and the metal ring tube into the mold; Step 3, add the mixture in Step 1 into the mold, cool and form. After shaping and trimming the formed seal ring, it is the reciprocating seal ring.

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