CN102796378A - Bearing holding frame and preparation method thereof - Google Patents
Bearing holding frame and preparation method thereof Download PDFInfo
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- CN102796378A CN102796378A CN2012103064468A CN201210306446A CN102796378A CN 102796378 A CN102796378 A CN 102796378A CN 2012103064468 A CN2012103064468 A CN 2012103064468A CN 201210306446 A CN201210306446 A CN 201210306446A CN 102796378 A CN102796378 A CN 102796378A
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Abstract
The invention discloses a bearing holding frame and a preparation method thereof. The preparation method of the bearing holding frame comprises the following steps: weighting 49-56% by weight of polyphenylene sulfide, 10-20% by weight of polytetrafluoroethylene, 20-37% by weight of a glass fiber, and 1-3% by weight of a coupling agent, mixing the raw materials, injecting the materials into an injection molding device, sectionally heating the materials respectively at 310-325 DEG C, 300-320 DEG C, and 290-315 DEG C, so as to obtain a molten liquid of the raw materials; injecting the molten liquid of the raw materials into a mold under an injection pressure of 80-125 MPa, wherein the temperature of a nozzle is 315-335 DEG C and the temperature in the mold is 90-130 DEG C; stripping the mold, so as to obtain the bearing holding frame and drying the bearing holding frame. The bearing holding frame has better temperature resistance, self lubrication, mechanicalness, wear resistance, dimensional stability and chemical stability, and can adapt to the high temperature environment in the presence of large amount of oil, and can be made into shapes which can not be made by metal materials and simultaneously lighten the weight.
Description
Technical field
The invention belongs to the material technology field, be specifically related to a kind of retainer and preparation method thereof.
Background technology
At present, the existing bearing retainer mainly contains two kinds, wherein, and a kind of retainer for adopting metallic substance to make; Metal material processing is restricted easily, when bearing in when work, metal retainer is because friction can cause bearing heating and wearing and tearing; Especially under the pyritous operating condition, be used to heart action of centrifugal force and aggravated friction, wearing and tearing and heating, can cause retainer burn or fracture when serious; Make the bearing cisco unity malfunction, on the other hand, the metallic substance cost is very high; Very expensive, and weight ratio is bigger, and the retainer that utilizes metallic substance to make is relatively heavier.
Another kind of retainer is the plastic bearing retainer; Wherein most of retainer for adopting nylon material to make; The material of this nylon bearing retainer is mainly PA66 and PA46; The high-temperature behavior of these two kinds of materials, intensity, oil-proofness, self-lubricating property, dimensional stability are all relatively poor, and at the environment of the Working environment medium and high temperature that needs run up or when work is arranged in the environment that a large amount of oily substances exist, this retainer is easy to damage.
Plastic bearing retainer in the existing technology also has the polymeric amide retainer, and this retainer is after temperature is higher than 150 ℃, and shock load reduces, and can not satisfy the requirement of existing bearing to mechanical property and dimensional stability.
Summary of the invention
First purpose of the present invention is: in order to overcome the deficiency of prior art; The invention provides a kind of retainer; Second purpose of the present invention is: in order to overcome the deficiency of prior art; The invention provides a kind of preparation method of retainer, the retainer stable performance that makes, high temperature resistant, intensity is big, oil resistance good, self-lubricating property is good.
In order to realize first above-mentioned purpose, the technical scheme below the present invention has adopted:
A kind of retainer, the material of described retainer is prepared from following components in weight percentage content:
Polyphenylene sulfide 49～56%
Coupling agent 1～3%.
Retainer of the present invention adopts polyphenylene sulfide as base material; Utilize spun glass as strongthener; Tetrafluoroethylene adds coupling agent again as self-lubricating material, and the retainer intensity that makes is big, high temperature resistant, good stability, oil-proofness is good, self lubricity is good.
As preferably, described coupling agent is a silane coupling agent.Coupling agent commonly used has titanate ester; Yet the titanate ester compound is met water and is prone to take place the intensive hydrolysis; In experiment, also observe titante coupling agent and join that moment produces a large amount of micro-bubbles behind the suspension-s, can not form good binding with fiber, and the product after hot-forming turns to be yellow generally, voidage high, material property descends; Adopt silane coupling agent as coupling agent, then do not have the problems referred to above.
As preferably, described silane coupling agent is a silane coupling A 187.
As preferably, the apparent density of described polyphenylene sulfide is 1.68g/cm
3, tensile strength is 140～165MPa, flexural strength is 200～225 MPa.
As preferably, described polyphenylene sulfide weight percentage is preferably 52～54%
In order to realize second above-mentioned purpose, the technical scheme below the present invention has adopted:
The preparation method of the described retainer of a kind of claim 1 may further comprise the steps:
(1) content 52～54% polyphenylene sulfides, 10～20% tetrafluoroethylene, 20～37% spun glass, above-mentioned each raw material of 1～3% coupling agent weighing by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 310～325 ℃; Do heat-up time, raw material delivered to the stage casing heating of injection moulding machine again, and the stage casing Heating temperature is 300～320 ℃; Do heat-up time, and the back segment of at last raw material being delivered to injection moulding machine heats, and Heating temperature is 290～315 ℃; Be to obtain the melt liquid of raw material heat-up time;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 80～125Mpa, and injection speed 50～60mm/s, nozzle temperature are 315～335 ℃, and the temperature in the mould is 90～130 ℃;
(4) demoulding, make retainer, carry out drying.
Wherein, granulation length is 5～6mm in the step (1), and raw material is 2～5s in injection moulding machine total heat-up time in the step (2), is rapid heating, and step crosses that raw material soaking time in mould is 17～22s in (3).
As preferably, described coupling agent is a silane coupling agent.
As preferably, described silane coupling agent is a silane coupling A 187.
As preferably, the drying temperature in the described step (4) is 100～130 ℃, and be 3～6h time of drying.
The fusing point of polyphenylene sulfide is higher and the oil-proofness drug-resistant performance is good, intensity is bigger, have higher wear resistance than nylon.
Tetrafluoroethylene is a kind of organic polymer, is the ideal self-lubricating material.Because the particle diameter of tetrafluoroethylene is less, have the zonal structure that crystallization thin slice and noncrystalline thin slice are alternately arranged, noncrystalline part is slided easily, so frictional coefficient is very little, its thereby has good anti-wear and wear-resistant performance at interval between friction pair.Tetrafluoroethylene is different with inorganic solid lubricants such as graphite, molybdenumdisulphide and SP 1; Do not form side chain in the aggressiveness of tetrafluoroethylene; Its molecule profile is smooth, makes it have the characteristic of low-friction coefficient, can form transfer film on the dual face in sliding process again.
Spun glass plays enhancement in component, spun glass and PPS being connected on the interface power that affacts on the product is passed on the spun glass, so glass fiber strength are fully utilized.Spun glass can make the avidity of inorganics and PPS little.
Because fiberglass surfacing is smooth, and adsorbed film of water is arranged, and is very poor with resin bond.Destruction such as make that matrix material the fiber unsticking often occurs, rupture and extracts.Therefore strengthen front glass and need pass through surface treatment, make its with PPS between form combining to a certain degree, finally whole as matrix material.Coupling agent is one of them important surface treatment agent.
The coupling mechanism of coupling agent is the organic process process to inorganic filler.Coupling agent is also claimed " bridging agent ", and its end parent is inorganic, makes an end parent organic, between mineral filler and organic resin, erects a bridge block, improves the interface binding power between resin and mineral filler, thereby improves the mechanical property of matrix material.
Beneficial effect of the present invention is: the retainer that utilizes preparation method of the present invention to prepare has higher heat resistance, self-lubricating property, mechanical property, wear resisting property, dimensional stability and chemicalstability; Can adapt in the environment that high temperature, a large amount of oils exists and work; In addition; Retainer of the present invention can be made into the metallic substance shape that is beyond one's reach, and has alleviated weight simultaneously.
Description of drawings
Fig. 1 implements 2 prepared retainers and the maximum operation (service) temperature test structure synoptic diagram that utilizes nylon 66 and the prepared retainer of nylon 46 for the present invention;
Fig. 2 is for the embodiment of the invention 4 prepared retainers and utilize nylon 66 prepared retainers to be placed on the test result synoptic diagram of compression machine oil tensile strength under 150 ℃ of temperature;
Fig. 3 make for the embodiment of the invention 5 retainer with utilize the test result synoptic diagram of nylon 66 prepared retainers tensile strength in 180 ℃ of temperature lower gear oil;
Fig. 4 for the present invention with embodiment 2 make retainer with utilize nylon 66 prepared retainers to carry out the test result synoptic diagram of wearing test.
Embodiment
Embodiment 1
(1) content 69% polyphenylene sulfide, 10% tetrafluoroethylene, 20% spun glass, above-mentioned each raw material of 1% silane coupling A, 187 weighings by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 310 ℃; Raw material is delivered to the stage casing heating of injection moulding machine, the stage casing Heating temperature is 300 ℃ again, and the back segment of at last raw material being delivered to injection moulding machine heats; Heating temperature is 290 ℃; Be 3s three periods total heat-up times, is rapid heating, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 80Mpa, and injection speed 55mm/s, nozzle temperature are 315 ℃, and the temperature in the mould is 90 ℃, keeps 20s;
(4) demoulding, make retainer, carry out drying.Drying temperature is 100 ℃, and be 6h time of drying.
Embodiment 2
(1) content 54% polyphenylene sulfide, 15% tetrafluoroethylene, 30% spun glass, above-mentioned each raw material of 3% silane coupling A, 187 weighings by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 320 ℃; Again raw material is delivered to the stage casing heating of injection moulding machine; The stage casing Heating temperature is 315 ℃, and the back segment of at last raw material being delivered to injection moulding machine heats, and Heating temperature is 300 ℃; Be 2s total heat-up time of three sections heating zones, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 120Mpa, and injection speed 51mm/s nozzle temperature is 330 ℃, and the temperature in the mould is 124 ℃, keeps 18s;
(4) demoulding, make retainer, carry out drying.Drying temperature is 125 ℃, and be 4h time of drying.
Embodiment 3
(1) content 53% polyphenylene sulfide, 20% tetrafluoroethylene, 20% spun glass, above-mentioned each raw material of 3% silane coupling A, 187 weighings by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 325 ℃; Again raw material is delivered to the stage casing heating of injection moulding machine; The stage casing Heating temperature is 320 ℃, and the back segment of at last raw material being delivered to injection moulding machine heats, and Heating temperature is 315 ℃; Be 5s total heat-up time of three sections heating zones, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 125Mpa, and nozzle temperature is 335 ℃, and the temperature in the mould is 130 ℃, keeps 21s;
(4) demoulding, make retainer, carry out drying.Drying temperature is 130 ℃, and be 5h time of drying.
Embodiment 4
(1) content 52% polyphenylene sulfide, 17% tetrafluoroethylene, 37% spun glass, above-mentioned each raw material of 2% silane coupling A, 187 weighings by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 323 ℃; Again raw material is delivered to the stage casing heating of injection moulding machine; The stage casing Heating temperature is 318 ℃, and the back segment of at last raw material being delivered to injection moulding machine heats, and Heating temperature is 310 ℃; Be 4s total heat-up time of three sections heating zones, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 100Mpa, and injection speed 57mm/s nozzle temperature is 329 ℃, and the temperature in the mould is 100 ℃, keeps 22s;
(4) demoulding, make retainer, carry out drying.Drying temperature is 115 ℃, and be 4h time of drying.
Embodiment 5
(1) content 53% polyphenylene sulfide, 10% tetrafluoroethylene, 34% spun glass, above-mentioned each raw material of 2% silane coupling A, 187 weighings by weight percentage mix;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 315 ℃; Again raw material is delivered to the stage casing heating of injection moulding machine; The stage casing Heating temperature is 310 ℃, and the back segment of at last raw material being delivered to injection moulding machine heats, and Heating temperature is 300 ℃; Be 3s total heat-up time of three sections heating zones, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 90Mpa, and injection speed 60mm/s nozzle temperature is 325 ℃, and the temperature in the mould is 110 ℃, keeps 17;
(4) demoulding, make retainer, carry out drying.Drying temperature is 120 ℃, and be 3h time of drying.
To embodiment 2 prepared retainers with utilize the maximum operation (service) temperature of nylon 66 and the prepared retainer of nylon 46 to test, test result is as shown in Figure 1.
Embodiment 4 prepared retainers are placed under 150 ℃ of temperature in the compression machine oil with utilizing nylon 66 prepared retainers, test tensile strength, test result is as shown in Figure 2.
With embodiment 5 make retainer with utilize nylon 66 prepared retainers to be placed in 180 ℃ of temperature lower gear oil, test tensile strength, test result is as shown in Figure 3.
With embodiment 2 make retainer with utilize nylon 66 prepared retainers to carry out wearing test, test result is as shown in Figure 4.
Claims (9)
1. a retainer is characterized in that, the material of described retainer is prepared from following components in weight percentage content:
Polyphenylene sulfide 49～56%
Tetrafluoroethylene 10～20%
Spun glass 20～40%
Coupling agent 1～3%.
2. retainer according to claim 1 is characterized in that: described coupling agent is a silane coupling agent.
3. retainer according to claim 2 is characterized in that: described silane coupling agent is a silane coupling A 187.
4. retainer according to claim 1 is characterized in that: the apparent density of described polyphenylene sulfide is 1.68g/cm
3, tensile strength is 140～165MPa, flexural strength is 200～225 MPa.
5. retainer according to claim 1 is characterized in that: described polyphenylene sulfide weight percentage is preferably 52～54%.
6. the preparation method of the described retainer of claim 1 is characterized in that: may further comprise the steps:
(1) content 52～54% polyphenylene sulfides, 10～20% tetrafluoroethylene, 20～37% spun glass, above-mentioned each raw material of 1～3% coupling agent weighing by weight percentage mix, and granulate;
(2) mixed raw material is dropped in the injection moulding machine, the leading portion of at first raw material being delivered to injection moulding machine heats, and Heating temperature is 310～325 ℃, and the stage casing Heating temperature is 300～320 ℃, and Heating temperature is 290～315 ℃, obtains the melt liquid of raw material;
(3) be in the material injecting mould of melt liquid with state, injection pressure is 80～125Mpa, and injection speed 50～60mm/s, nozzle temperature are 315～335 ℃, and the temperature in the mould is 90～130 ℃;
(4) demoulding, make retainer, carry out drying.
7. the preparation method of retainer according to claim 6, it is characterized in that: described coupling agent is a silane coupling agent.
8. the preparation method of retainer according to claim 6, it is characterized in that: described silane coupling agent is a silane coupling A 187.
9. the preparation method of retainer according to claim 6, it is characterized in that: the drying temperature in the described step (4) is 100～130 ℃, be 3～6h time of drying.
Priority Applications (1)
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| CN2012103064468A CN102796378A (en) | 2012-08-24 | 2012-08-24 | Bearing holding frame and preparation method thereof |
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| CN2012103064468A CN102796378A (en) | 2012-08-24 | 2012-08-24 | Bearing holding frame and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889700A (en) * | 2015-06-24 | 2015-09-09 | 江苏省社渚轴承有限公司 | Manufacturing method and system of bearing holder |
| CN105643863A (en) * | 2014-11-14 | 2016-06-08 | 中国科学院金属研究所 | Injection-molding preparation method for plastic angular contact ball bearing retainer and special mold for injection-molding preparation method |
| CN113942167A (en) * | 2021-10-13 | 2022-01-18 | 人本股份有限公司 | Injection molding process of bearing plastic retainer |
| CN114055699A (en) * | 2021-09-26 | 2022-02-18 | 山东博源精密机械有限公司 | Split type bearing retainer forming equipment and forming method |
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| CN1528819A (en) * | 2003-10-09 | 2004-09-15 | 林良云 | PTFE modified polyphenylene sulfide composite material and pelleting process thereof |
| US20090099300A1 (en) * | 2006-11-22 | 2009-04-16 | Robert Russell Gallucci | Methods of making polymer blend compositions |
| CN101838462A (en) * | 2010-04-13 | 2010-09-22 | 四川中物材料有限责任公司 | Glass-fiber reinforced polyphenyl thioether composite material with humidity resistance and high resistivity and preparation method thereof |
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- 2012-08-24 CN CN2012103064468A patent/CN102796378A/en active Pending
Patent Citations (3)
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| CN1528819A (en) * | 2003-10-09 | 2004-09-15 | 林良云 | PTFE modified polyphenylene sulfide composite material and pelleting process thereof |
| US20090099300A1 (en) * | 2006-11-22 | 2009-04-16 | Robert Russell Gallucci | Methods of making polymer blend compositions |
| CN101838462A (en) * | 2010-04-13 | 2010-09-22 | 四川中物材料有限责任公司 | Glass-fiber reinforced polyphenyl thioether composite material with humidity resistance and high resistivity and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643863A (en) * | 2014-11-14 | 2016-06-08 | 中国科学院金属研究所 | Injection-molding preparation method for plastic angular contact ball bearing retainer and special mold for injection-molding preparation method |
| CN104889700A (en) * | 2015-06-24 | 2015-09-09 | 江苏省社渚轴承有限公司 | Manufacturing method and system of bearing holder |
| CN114055699A (en) * | 2021-09-26 | 2022-02-18 | 山东博源精密机械有限公司 | Split type bearing retainer forming equipment and forming method |
| CN114055699B (en) * | 2021-09-26 | 2022-09-16 | 山东博源精密机械有限公司 | Split type bearing retainer forming equipment and forming method |
| CN113942167A (en) * | 2021-10-13 | 2022-01-18 | 人本股份有限公司 | Injection molding process of bearing plastic retainer |
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Address after: 325000 No. 16, Yong Jiang Road, Longwan economic and Technological Development Zone, Zhejiang, Wenzhou Applicant after: C&U Group Ltd. Address before: 325000 No. 16, Yong Jiang Road, Wenzhou economic and Technological Development Zone, Zhejiang, China Applicant before: C&U Group Ltd. |
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Application publication date: 20121128 |