CN101929506A - A kind of winding fiber reinforced self-lubricating composite bearing and its manufacturing method - Google Patents
A kind of winding fiber reinforced self-lubricating composite bearing and its manufacturing method Download PDFInfo
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Abstract
本发明公开了一种缠绕纤维增强自润滑复合轴承及其制造方法，包括内缠绕层和外缠绕层，内缠绕层由聚四氟乙烯纤维和其他高耐磨的纤维混合并经树脂胶液浸渍后缠绕而成，其它耐磨纤维采用芳纶纤维、聚酯纤维、超高分子量聚乙烯纤维或碳纤维中的一种或两种；外缠绕层由无碱长玻璃纤维与树脂胶液浸渍缠绕在内缠绕层上，作为轴承的衬背。本发明缠绕纤维增强自润滑复合轴承具有承载承载能力高，耐磨性好，且成本低廉等特点，可以制备自润滑径向滑动轴承，广泛应用于旋转、摆动、往复和滑动运动方式的无油润滑工作场所。
The invention discloses a winding fiber reinforced self-lubricating composite bearing and a manufacturing method thereof, comprising an inner winding layer and an outer winding layer, the inner winding layer is mixed with polytetrafluoroethylene fibers and other high wear-resistant fibers and impregnated with resin glue The other wear-resistant fibers are made of one or two of aramid fiber, polyester fiber, ultra-high molecular weight polyethylene fiber or carbon fiber; the outer winding layer is impregnated with alkali-free long glass fiber and resin glue. On the inner winding layer, it acts as the backing of the bearing. The winding fiber reinforced self-lubricating composite bearing of the present invention has the characteristics of high load-carrying capacity, good wear resistance, and low cost, and can prepare self-lubricating radial sliding bearings, which are widely used in oil-free bearings in rotation, swing, reciprocating and sliding motion modes. Lubricate the workplace.
Description
Technical field
The present invention relates to a kind of selflubricating composite sliding bearing and manufacture method thereof, especially a kind of fiber wound reinforced self-lubricating composite sliding bearing and manufacture method thereof.
Technical background
In recent years, along with the cost of a large amount of consumption of non-ferrous metal and non-ferrous metal increases, obtained rapidly as the technology of structure and function component with high-molecular organic material alternative metals material and to have developed.Fibre reinforced epoxy resin composite is the high-intensity reinforcing material of a class, because this type of material has thermosetting resin high hardness, high-intensity characteristics, makes that the material after strengthening has excellent mechanical property.Fiber reinforced resin based self-lubricating composite bearing has advantages such as self-lubricating property is good, corrosion-resistant, dry, anti-foreign matter intrusion damage falls in damping, cost is low, province's energy resources because of it, be one of emphasis direction of novel bearing research and development always.The patent No. is that the Chinese invention patent of CN87102143 discloses a kind of fibre reinforced moulding compound type water-lubricated anti-friction anti-wear material, with phenol formaldehyde resin cheap and easy to get and degreasing cotton fiber is main component, its fitting process is simple and can mold various sliding friction parts easily with compression molding, and nonpollution environment and harm operator ' s health material produce in preparation and the forming process.This type of made motor for submerged pump guide bearing and thrust disc friction plate, making lubricant medium with water is having good antifriction antiwear under the high year operating conditions at a high speed.But because this type of material adopts the compression molding preparation, therefore can only prepare flat plate material, be applicable to and make pad or plain thrust bearing.Publication number is that the Chinese utility model patent of CN2482605 discloses a kind of compound bearing, comprises nonmetal internal layer and metal outer, and both are compound by binder to be one, and nonmetal layer adopts plain weave or satin weave mode to mix to knit by the organic fiber yarn and forms.This bearing structure is simple, and shaping operation is easy to manufacture, can make the sliding bearing of different shape as required, and bearing capacity is strong, good rigidly, and intensity and hardness are higher, have excellent self lubricity, wear resistance and good anti fouling performance and anticorrosive property.But because the organic fiber that this class bearing adopts is to exist to mix the form of weaving cotton cloth, so cost is higher, and bearing only is fit to preparation thin-walled shape sliding bearing.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of bearing capacity height, and wear resistance is good, and fiber wound reinforced self-lubricating composite bearing with low cost and manufacture method thereof.
For solving the problems of the technologies described above, winding layer and outer wrap in a kind of fiber wound reinforced self-lubricating composite bearing of the present invention comprises, described interior winding layer is by the fiber blends of polytetrafluoroethylene fiber and other high abrasions and be entwined one or both in described other abrasion resistant fibrous employing aramid fibre, polyester fibre, superhigh molecular weight polyethylene fibers or the carbon fiber behind the resin adhesive liquid dipping; Described outer wrap is wrapped on the described interior winding layer, as the backing of bearing by alkali-free continuous glass-fiber and resin adhesive liquid dipping.
A kind of manufacture method of fiber wound reinforced self-lubricating composite bearing comprises following process step:
1, preparation resin adhesive liquid: with the weighing in proportion of epoxy resin, curing agent, curing accelerator, filler, organic additive, utilize homogenizer to stir, treat evenly after, insert in the glue pond in the Stetch Wrapping Machine, stand-by.
2, prepare plug: plug is polished and clean;
3, preparation bearing inner layer material: a kind of blend fiber is formed in other abrasion resistant fibrous common winding of polytetrafluoroethylene (PTFE) continuous long fiber peacekeeping, the fibrousness of described polytetrafluoroethylene (PTFE) fiber is 150～500D, the mixture of one or both in described other abrasion resistant fibrous employing aramid fibre, polyester fibre, superhigh molecular weight polyethylene fibers or the carbon fiber, fibrousness is 200～1000D.
4, twine the bearing internal layer: utilize Stetch Wrapping Machine, above-mentioned blend fiber is wrapped on the plug by the described resin adhesive liquid that dipping prepares, twining winding angle is 30 °～85 °, and winding thickness is 0.45mm～0.55mm.
5, preparation back sheet: the alkali-free continuous glass-fiber that will flood glue is wrapped on the inside liner, and with the back sheet as bearing, its fiber winding angle is 30 °～85 °, and yarn width is at 10mm～25mm;
6, solidifying: the bearing first product that winds is taken off, be positioned in the baking oven together with plug and be cured, solidifying temperature is 100 ℃～180 ℃, and the time is 6～15 hours; After treating completion of cure, bearing hair product are taken out from baking oven together with plug.
7, following process: the bearing hair product after will solidifying carry out the processing of outer surface together with plug on lathe, stay part machining allowance; Demoulding takes out the bearing goods from plug then, is worked into the requirement size by bearing height, and bearing outside diameter is machined to needed tolerance range, gets bearing completed products.
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing, when preparing plug, after plug polished and clean, at mandrel surface spraying or the corresponding high temperature resistant remover of obliterating, described remover was one or both the mixture in silicone oil, the polyvinyl alcohol.
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing, in preparation during back sheet, to suitable wetting of described alkali-free continuous glass-fiber, the fibrousness of described alkali-free glass fibre is 200～3000Tex before impregnation.
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing is prepared the used described epoxy resin of described resin adhesive liquid and is adopted the liquid bisphenol A type epoxy resin, and epoxide number is 0.35～0.55eq/100g.
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing, prepare the used described curing agent of described resin adhesive liquid and adopt methyl tetrahydro phthalic anhydride (MeTHPA) or hexahydrophthalic anhydride (HHPA), its consumption is 60～90% (calculating with mass fraction) of described epoxy resin;
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing is prepared the used described curing accelerator of described resin adhesive liquid and is adopted tertiary amines or imidazoles curing accelerator, and consumption is 0.2～5% (calculating with mass fraction) of described epoxy resin;
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing, prepare the used described filler of described resin adhesive liquid and adopt one or more mixture in graphite, molybdenum disulfide, polytetrafluoroethylene (PTFE), copper powder, zine stearate, the silica sand, consumption is 2～20% (calculating with mass fraction) of described epoxy resin;
The manufacture method of above-mentioned a kind of fiber wound reinforced self-lubricating composite bearing, prepare the used described organic additive of described resin adhesive liquid and comprise wetting agent and coupling agent, described wetting agent adopts a kind of in the nonionic wetting agent (Troysol S366) of nonionic siloxane copolymer or the Triton X-100 (X-350), and consumption is 0.1～2% (calculating with mass fraction) of described epoxy resin component; Described coupling agent adopts silane coupling agent, and consumption is 0.1～2% (calculating with mass fraction) of described epoxy resin.
The present invention is abrasion resistant fibrous as composite bearing selflubricating liner to twine the peacekeeping of teflon continuous long fiber, twining the alkali-free continuous glass-fiber is back sheet, and the selflubricating composite sliding bearing of making can replace traditional copper/copper alloy bearing and copper alloy inlaid solid lubrication bearing.Fiber wound reinforced self-lubricating composite bearing of the present invention has carrying bearing capacity height, wear resistance is good, and characteristics such as with low cost can prepare the selflubricating radial sliding bearing, are widely used in the oil-free lubrication operational site of rotating, oscillating, reciprocating and sliding motion mode.During making, plug is polished and clean, can guarantee wicking surface degree of finish, before winding,, can be convenient to demoulding at mandrel surface spraying or the corresponding high temperature resistant remover of obliterating.Before impregnation,, can guarantee the wellability of alkali-free glass fibre to suitable wetting of alkali-free continuous glass-fiber.
Description of drawings
Fig. 1 is the longitudinal cross-section structural representation of self-lubricating composite bearing of the present invention;
Fig. 2 is the side direction structural representation with respect to Fig. 1.
Embodiment
Embodiment 1
As shown in the figure, a kind of fiber wound reinforced self-lubricating composite bearing of the present invention comprises interior winding layer 1 (bearing internal layer) and outer wrap 2 (back sheet), and its manufacture method comprises following process step:
1, the preparation of resin adhesive liquid.
With epoxy resin E44, methyl tetrahydro phthalic anhydride (MeTHPA), 2-ethyl-4 methylimidazole, silica sand, Triton X-100, the weighing of gamma-aminopropyl-triethoxy-silane (KH550) according to the form below ratio, utilize homogenizer to stir, after treating evenly, insert in the glue pond in the Stetch Wrapping Machine, stand-by.
| Component | Ratio (in mass fraction) |
| Epoxy resin E44 | 100 |
| Methyl tetrahydro phthalic anhydride (MeTHPA) | 60 |
| 2-ethyl-4 methylimidazole | 1.0 |
| Silica sand | 5 |
| Triton X-100 | 0.5 |
| Gamma-aminopropyl-triethoxy-silane (KH550) | 1.5 |
2, the preparation of plug.
Before winding, elder generation polishes the carbon steel plug and cleans, to guarantee mandrel surface degree of finish.Simultaneously, for the ease of demoulding, before winding, at mandrel surface spraying or the high temperature resistant remover dimethicone of obliterating.
3, the preparation of bearing inner layer material.
The common winding of one selflubricating PTFE continuous fiber (fibrousness is 500D), one polyester fibre (fibrousness is 1500D) and one aramid fibre (fibrousness is 200D) formed blend fiber.
4, twine the bearing internal layer.
Resin adhesive liquid with the preparation of above-mentioned blend fiber dipping is wrapped on the plug jointly.The dimension winding angle is 55 °, and winding thickness is 0.5mm.
5, the preparation of back sheet.
The surface for the treatment of above-mentioned bearing inner layer material utilizes Stetch Wrapping Machine that alkali-free glass long fibre (fibrousness is 600Tex) is passed through the glue pond than after doing, and is wrapped on the metal mandrel.65 ° of winding angles, yarn sheet width 20mm twines 6 layers of the numbers of plies.
6, solidifying
After to be wound the finishing goods are positioned in the baking oven, solidifying temperature is 120 ℃, and be 8 hours curing time.
7, following process
Bearing hair product after solidifying are taken out from baking oven together with plug, on lathe, carry out the processing of outer surface, stay part machining allowance; Demoulding takes out the bearing goods from plug then, is worked into the requirement size by bearing height, and bearing outside diameter is machined to needed tolerance range, makes bearing completed products of the present invention.
Embodiment 2
A kind of manufacture method of fiber wound reinforced self-lubricating composite bearing comprises following process step:
1, the preparation of resin adhesive liquid.
With epoxy resin E51, hexahydrophthalic anhydride (HHPA), 2,4,6-three (dimethylamino methyl) phenol (DMP-30), molybdenum disulfide, nonionic siloxane copolymer (Troysol S366), γ-glycidyl ether oxygen propyl trimethoxy silicane (KH560), the weighing of according to the form below ratio, utilize homogenizer to stir, after treating evenly, insert in the glue pond in the Stetch Wrapping Machine, stand-by.
| Component | Ratio (in mass fraction) |
| Epoxy resin E51 | 100 |
| Hexahydrophthalic anhydride (HHPA) | 90 |
| 2,4,6-three (dimethylamino methyl) phenol (DMP-30) | 4.0 |
| Molybdenum disulfide | 15 |
| Nonionic siloxane copolymer (Troysol S366) | 1.5 |
| γ-glycidyl ether oxygen propyl trimethoxy silicane (KH560) | 0.5 |
2, the preparation of plug.
Before winding, elder generation polishes plug and cleans, to guarantee mandrel surface degree of finish.Simultaneously, for the ease of demoulding, before winding, at mandrel surface spraying or the high temperature resistant remover polyvinyl alcohol of obliterating.Plug adopts the plug of metallic material
3, the preparation of bearing inner layer material.
The common winding of one selflubricating PTFE continuous fiber (fibrousness is 200D), one superhigh molecular weight polyethylene fibers (fibrousness is 1300D) and one carbon fiber (fibrousness is 200D) formed blend fiber.
4, twine the bearing internal layer.
Resin adhesive liquid with the preparation of above-mentioned blend fiber dipping is wrapped on the plug jointly.The dimension winding angle is 70 °, and winding thickness is 0.55mm.
5, the preparation of back sheet.
The surface for the treatment of above-mentioned bearing inner layer material utilizes Stetch Wrapping Machine that alkali-free glass long fibre (fibrousness is 2000Tex) is passed through the glue pond than after doing, and is wrapped on the metal mandrel.45 ° of winding angles, yarn sheet width 10mm twines 6 layers of the numbers of plies.
6, solidifying
After to be wound the finishing goods are positioned in the baking oven, solidifying temperature is 160 ℃, and be 5 hours curing time.
7, following process
Bearing hair product after solidifying are taken out from baking oven together with plug, on lathe, carry out the processing of outer surface, stay part machining allowance; Demoulding takes out the bearing goods from plug then, is worked into the requirement size by bearing height, and bearing outside diameter is machined to needed tolerance range, makes bearing completed products of the present invention.
In the manufacture method of self-lubricating composite bearing of the present invention, the curing accelerator that is used to prepare resin adhesive liquid can adopt and remove 2,4, tertiary amines or imidazoles curing accelerator beyond 6-three (dimethylamino methyl) phenol (DMP-30) and 2-ethyl-4 methylimidazole, filler can adopt the powder with excellent lubricated or wear-resisting property, as graphite, molybdenum disulfide, polytetrafluoroethylene (PTFE), copper powder, zine stearate, the mixture of one or more in the silica sand, wetting agent in the organic additive mainly rises wetting in resin adhesive liquid, the effect of dispersion and froth breaking, can adopt a kind of in the nonionic wetting agent (Troysol S366) of nonionic siloxane copolymer or the Triton X-100 (X-350), coupling agent can adopt other silane coupling agent except that gamma-aminopropyl-triethoxy-silane (KH550).Can adopt other silicone oil or polyvinyl alcohol, the perhaps mixture of silicone oil and polyvinyl alcohol at the remover of mandrel surface spraying or obliterating.Abrasion resistant fibrous in the inner layer material adopted one or both the mixture in aramid fibre, polyester fibre, superhigh molecular weight polyethylene fibers or the carbon fiber.
Claims (9)
1. fiber wound reinforced self-lubricating composite bearing, it is characterized in that, winding layer and outer wrap in it comprises, described interior winding layer is by the fiber blends of polytetrafluoroethylene fiber and other high abrasions and be entwined one or both in described other abrasion resistant fibrous employing aramid fibre, polyester fibre, superhigh molecular weight polyethylene fibers or the carbon fiber behind the resin adhesive liquid dipping; Described outer wrap is wrapped on the described interior winding layer, as the backing of bearing by alkali-free continuous glass-fiber and resin adhesive liquid dipping.
2. the manufacture method of a fiber wound reinforced self-lubricating composite bearing is characterized in that, it comprises following process step:
(1), the preparation resin adhesive liquid: with the weighing in proportion of epoxy resin, curing agent, curing accelerator, filler, organic additive, utilize homogenizer to stir, treat evenly after, insert in the glue pond in the Stetch Wrapping Machine, stand-by.
(2), prepare plug: plug is polished and clean;
(3), preparation bearing inner layer material: a kind of blend fiber is formed in other abrasion resistant fibrous common winding of teflon continuous long fiber peacekeeping, the fibrousness of described polytetrafluoroethylene fiber is 150～500D, the mixture of one or both in described other abrasion resistant fibrous employing aramid fibre, polyester fibre, superhigh molecular weight polyethylene fibers or the carbon fiber, fibrousness is 200～1000D.
(4), twine the bearing internal layer: utilize Stetch Wrapping Machine, above-mentioned blend fiber is wrapped on the plug by the described resin adhesive liquid that dipping prepares, twining winding angle is 30 °～85 °, and winding thickness is 0.45mm～0.55mm.
(5), preparation back sheet: the alkali-free continuous glass-fiber that will flood glue is wrapped on the inside liner, and with the back sheet as bearing, its fiber winding angle is 30 °～85 °, and yarn width is at 10mm～25mm;
(6), solidifying: the bearing first product that winds is taken off, be positioned in the baking oven together with plug and be cured, solidifying temperature is 100 ℃～180 ℃, and the time is 6～15 hours; After treating completion of cure, bearing hair product are taken out from baking oven together with plug.
(7), following process: the bearing hair product after will solidifying carry out the processing of outer surface together with plug on lathe, stay part machining allowance; Demoulding takes out the bearing goods from plug then, is worked into the requirement size by bearing height, and bearing outside diameter is machined to needed tolerance range, gets bearing completed products.
3. the manufacture method of a kind of fiber wound reinforced self-lubricating composite bearing as claimed in claim 2, it is characterized in that, when preparing plug, after plug polished and clean, at mandrel surface spraying or the corresponding high temperature resistant remover of obliterating, described remover is one or both the mixture in silicone oil, the polyvinyl alcohol.
4. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that, in preparation during back sheet, to suitable wetting of described alkali-free continuous glass-fiber, the fibrousness of described alkali-free glass fibre is 200～3000Tex before impregnation.
5. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that prepare the used described epoxy resin of described resin adhesive liquid and adopt the liquid bisphenol A type epoxy resin, epoxide number is 0.35～0.55eq/100g.
6. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that, preparing the used described curing agent of described resin adhesive liquid and adopt methyl tetrahydro phthalic anhydride or hexahydrophthalic anhydride, is 60～90% of described epoxy resin in its consumption of mass fraction.
7. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that, preparing the used described curing accelerator of described resin adhesive liquid and adopt tertiary amines or imidazoles curing accelerator, is 0.2～5% of described epoxy resin in the mass fraction consumption.
8. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that, preparing the used described filler of described resin adhesive liquid and adopt one or more mixture in graphite, molybdenum disulfide, teflon, copper powder, zine stearate, the silica sand, is 2～20% of described epoxy resin in its consumption of mass fraction.
9. as the manufacture method of claim 2 or 3 described a kind of fiber wound reinforced self-lubricating composite bearings, it is characterized in that, prepare the used described organic additive of described resin adhesive liquid and comprise wetting agent and coupling agent, described wetting agent adopts a kind of in the nonionic wetting agent of nonionic siloxane copolymer or the Triton X-100, is 0.1～2% of described epoxy resin component in its consumption of mass fraction; Described coupling agent adopts silane coupling agent, is 0.1～2% of described epoxy resin in its consumption of mass fraction.
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