CN212422401U - Modified PTFE five-layer composite self-lubricating plate - Google Patents
Modified PTFE five-layer composite self-lubricating plate Download PDFInfo
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- CN212422401U CN212422401U CN202020549387.7U CN202020549387U CN212422401U CN 212422401 U CN212422401 U CN 212422401U CN 202020549387 U CN202020549387 U CN 202020549387U CN 212422401 U CN212422401 U CN 212422401U
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- tin bronze
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Abstract
The modified PTFE five-layer composite self-lubricating plate is characterized by comprising a metal substrate positioned in the middle, spherical tin bronze powder layers positioned on the upper surface and the lower surface of the metal substrate and a modified PTFE plastic layer positioned on the outermost layer. The spherical tin bronze powder layer and the metal substrate are combined in a sintering mode in a powder metallurgy mode, and the modified PTFE plastic layer and the spherical tin bronze powder layer are combined in a mode that modified PTFE plastic is embedded into gaps of the spherical tin bronze powder. The utility model relates to a five-layer composite self-lubricating panel of modified PTFE has the two-sided plastic lubricating layer, and wear-resisting effect is good, toughness is sufficient, combines firmly between the layer, compares pure working of plastics and has fine mechanical strength. After being formed and processed, the material can be made into sliding bearings, gasket sealing elements and the like, and is widely applied to the fields of engine gearboxes, equipment part connection and the like.
Description
Technical Field
The utility model relates to a compound self-lubricating panel especially relates to five layers of compound self-lubricating panels of modified PTFE.
Background
PTFE and modified plastics thereof have excellent high temperature resistance, chemical corrosion resistance and extremely low friction coefficient, are self-lubricating materials which are most widely applied in the current market, and can be used as sliding bearings, gasket sealing elements and the like to be widely applied to a plurality of fields of machinery, instruments, electronics, medical treatment and the like. When the modified PTFE plastic piece is used as a shaft sleeve and a gasket, although the modified PTFE plastic piece has light weight, low cost and corrosion resistance, the material has low bearing capacity and is very limited to be applied under the condition of large load. The metal plastic composite structure is characterized in that a layer of modified PTFE plastic is compounded on a metal matrix, so that the mechanical strength of a part can be greatly improved, but the currently produced material is only coated with the modified PTFE plastic on one side, and cannot be applied to occasions requiring double-sided lubrication, high bearing capacity or high sealing performance. Chinese patent CN 204186768U proposes that a layer of PTFE fiber fabric is attached to both sides of a metal substrate by bonding, thereby achieving high load-bearing and double-sided lubrication effects. But the way of bonding, it is likely to cause the surface plastic to peel off, resulting in product failure. Therefore, the utility model provides a five-layer compound self-lubricating panel of modified PTFE through the spherical tin bronze powder of surface sintering about metal substrate, covers one deck antifriction, wear-resisting modified PTFE plastic layer on spherical tin bronze bisque again to the mode in spherical tin bronze powder space of plastics embedding realizes higher interlaminar bonding strength under the prerequisite of high bearing, double-sided lubrication, can make slide bearing, liner sealing member use after the shaping processing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a five-layer composite self-lubricating panel of modified PTFE has the effect that high bearing, double-sided lubrication to bonding strength is high between the layer.
The utility model has the technical scheme that: the modified PTFE five-layer composite self-lubricating plate is characterized by comprising a metal substrate positioned in the middle, spherical tin bronze powder layers positioned on the upper surface and the lower surface of the metal substrate and a modified PTFE plastic layer positioned on the outermost layer.
The spherical tin bronze powder layer and the metal substrate are combined in a sintering mode in a powder metallurgy mode.
The modified PTFE plastic layer and the spherical tin bronze powder layer are combined in a mode that the modified PTFE plastic is embedded into gaps of the spherical tin bronze powder.
The metal substrate is a low carbon steel plate, a stainless steel plate or a bronze plate.
The utility model discloses following beneficial effect has:
1. the double-sided lubricating layer has low friction coefficient and high wear resistance;
2. the bearing capacity is strong, and the mechanical strength is high;
3. firm interlayer combination, difficult failure and long service life.
Drawings
FIG. 1 is a schematic structural diagram of a modified PTFE five-layer composite self-lubricating plate.
In the figure: 1. a metal substrate; 2. a spherical tin bronze powder layer; 3. and a modified PTFE plastic layer.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a low carbon steel sheet is used as a metal base 1, and a spherical tin bronze powder layer 2 is formed by powder-spreading and sintering on the upper and lower surfaces of the metal base 1. Then, firstly, laying a PTFE plastic mixture fabric added with a modified material on the spherical tin bronze powder layer 2 on one side, and rolling and drying to embed the fabric into gaps of the spherical tin bronze powder layer 2 and drying; and repeating the steps on the spherical tin bronze powder layer 2 on the other side. And (3) rolling the plate with the fabric laid on both sides, sintering in nitrogen atmosphere, plasticizing and permeating PTFE at high temperature, combining the PTFE with other modified materials in the fabric to form a whole, cooling, and finish rolling to flatten the surface of the PTFE to form a modified PTFE plastic layer 3. According to the modified PTFE five-layer composite self-lubricating plate prepared by the method, the metal substrate 1 and the spherical tin bronze powder layer 2 are combined in a semi-melting sintering mode, the modified PTFE plastic layer 3 covers the spherical tin bronze powder layer 2 and is in a mutually embedded state with the bonding surface of the spherical tin bronze powder layer 2, so that good bonding force among the metal substrate, the spherical tin bronze powder layer 2 and the modified PTFE plastic layer is guaranteed, meanwhile, double-sided lubrication and wear resistance effects are achieved, and larger working pressure can be borne.
What has been described above is only the preferred embodiment of the present invention, not for limiting the scope of the present invention, but various changes can be made to the above-mentioned embodiment of the present invention. All the simple and equivalent changes and modifications made according to the claims and the content of the specification of the present invention fall within the scope of the claims of the present invention. The present invention is not described in detail in the conventional technical content.
Claims (4)
1. The modified PTFE five-layer composite self-lubricating plate is characterized by comprising a metal substrate positioned in the middle, spherical tin bronze powder layers positioned on the upper surface and the lower surface of the metal substrate and a modified PTFE plastic layer positioned on the outermost layer.
2. The modified PTFE five-layer composite self-lubricating plate as claimed in claim 1, wherein the spherical tin bronze powder layer and the metal substrate are sintered and bonded by powder metallurgy.
3. The modified PTFE five-layer composite self-lubricating plate as claimed in claim 1, wherein the modified PTFE plastic layer and the spherical tin bronze powder layer are bonded by embedding the modified PTFE plastic into the gaps of the spherical tin bronze powder.
4. The modified PTFE five-layer composite self-lubricating plate as claimed in claim 1, wherein the metal substrate is a low carbon steel plate, a stainless steel plate or a bronze plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020549387.7U CN212422401U (en) | 2020-04-15 | 2020-04-15 | Modified PTFE five-layer composite self-lubricating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020549387.7U CN212422401U (en) | 2020-04-15 | 2020-04-15 | Modified PTFE five-layer composite self-lubricating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212422401U true CN212422401U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020549387.7U Active CN212422401U (en) | 2020-04-15 | 2020-04-15 | Modified PTFE five-layer composite self-lubricating plate |
Country Status (1)
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| CN (1) | CN212422401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116063896A (en) * | 2022-07-26 | 2023-05-05 | 合肥波林新材料股份有限公司 | Thin-layer abrasion-resistant coating and preparation method thereof |
-
2020
- 2020-04-15 CN CN202020549387.7U patent/CN212422401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116063896A (en) * | 2022-07-26 | 2023-05-05 | 合肥波林新材料股份有限公司 | Thin-layer abrasion-resistant coating and preparation method thereof |
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