CN103497483B - Polymer metal wear-resistant self-lubricating composite material, production method thereof, and guide bearing - Google Patents
Polymer metal wear-resistant self-lubricating composite material, production method thereof, and guide bearing Download PDFInfo
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Abstract
The invention relates to a polymer metal wear-resistant self-lubricating composite material, a production method thereof, and a manufactured guide bearing. The product comprises a metal layer and a polymer layer. The polymer layer comprises, by weight: 50-80 parts of a polymer, 10-30 parts of potassium hexatitanate whisker treated by using a coupling agent, 10-20 parts of a solid lubricant, and processing auxiliary agents. A bonding surface between the metal layer and the polymer layer has at least one straight groove on a first direction, and at least one transverse groove, inclined groove or spiral-shaped groove on a direction crossing the first direction. The production method comprises the steps that: the 50-80 parts by weight of the polymer, 10-30 parts by weight of potassium hexatitanate whisker treated by using the coupling agent, 10-20 parts by weight of solid lubricant, and processing auxiliary agents are uniformly mixed; the mixture is base-dried, extruded, and cut into particles; the particles are bake-dried; the metal layer is processed into metal parts satisfying size and structural requirements; the metal parts are preheated; the metal parts are loaded into a mold; and injection molding processing or mold pressing processing is carried out.
Description
Technical field
The invention belongs to new material technology field, especially a kind of polymer/metal abrasion-proof self-lubricating composite material is related to, the invention still further relates to a kind of production method of polymer/metal abrasion-proof self-lubricating composite material, the invention still further relates to the guide bearing that a kind of polymer/metal abrasion-proof self-lubricating composite material is obtained.
Background technology
High molecular abrasion-proof self-lubricating material is huge because having advantage application potentials on the structural parts such as machinery, automobile such as wear-resistant, corrosion-resistant, self-lubricating, mating parts damage be little, but also there is intensity and rigidity deficiency as mechanical structured member, the problem such as heat conduction and poor radiation, the structural part made of high molecular abrasion-proof self-lubricating material is wear-resisting, corrosion resistant, light weight, bite-resistant, not easy damaged mating parts, but poor thermal conductivity (thermal conductivity is less than 0.5 W/m/K mostly), supporting capacity is limited; Compared with macromolecular material, metal has higher intensity, rigidity and thermal conductivity.Polymer/metal matrix material is expected to the advantage giving full play to both, therefore develops polymer/metal abrasion-proof self-lubricating composite material and has practical significance.
The manufacture method of polymer/metal matrix material has cold sintering, gluing, welding process, extrusion process etc.Namely cold sintering refers to that be heated to more than the melt temperature of polymkeric substance and carry out pressurize, cooling, obtain goods, its technique is comparatively complicated, and efficiency is lower by polymer layer and metal level by after certain pressure compaction.Gluing adopts bonded adhesives to connect by polymer layer and metal level, and as AB glue, 502 glue etc., technique is simple and convenient, but bonding strength is limited, and easily comes off when in hot water or other medium, soak time is longer.Welding process adopts the method such as hot melt or ultrasonic wave that polymer layer and metal level are carried out seam, and the polymkeric substance kind that can weld is restricted, and linking intensity is lower.Extrusion process utilizes principle of expanding with heat and contracting with cold, first heated by metal shell, then pressurize and polymer inner layer to be pressed into, and produces loosening under too low or excessive temperature because both breathing are inconsistent.Because polymkeric substance and metal have different molecular structures, its physical properties, thermal property are not identical yet, and the swollen shrinkage different from those of the heat as both is very large, therefore adopts traditional embedded type composite material structure, is difficult to the mortise guaranteeing both.
Summary of the invention
In order to overcome the deficiencies in the prior art, on the one hand, one of the object of the invention is to provide a kind of polymer/metal abrasion-proof self-lubricating composite material.
In order to solve the problems of the technologies described above, polymer/metal abrasion-proof self-lubricating composite material provided by the invention, described matrix material comprises metal level; The polymer layer engaged with at least one side of described metal level; Crystal whisker of hexa potassium titanate 10 ~ 30 weight part that described polymer layer component at least comprises polymkeric substance 50 ~ 80 weight part, coupling agent treatment is crossed, solid lubricant 10 ~ 20 weight part, processing aid; Described polymkeric substance is the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone; Described solid lubricant at least comprises the one in graphite, molybdenumdisulphide, tetrafluoroethylene; Described processing aid at least comprises 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor; The junction surface of described metal level and polymer layer has at least one straight trough at first direction, has at least one translot, skewed slot or helix-type flute with the crisscross of described first direction.With the crisscross direction comprised perpendicular to first direction of described first direction described in the present invention; Also the direction that form an angle crossing with first direction is comprised, such as, in 60 degree of angles.
As optimal technical scheme, polymer/metal abrasion-proof self-lubricating composite material provided by the invention, the degree of depth of described straight trough, translot or skewed slot is 0.5 ~ 1.5mm.
As optimal technical scheme, polymer/metal abrasion-proof self-lubricating composite material provided by the invention, described coupling agent is KH550 or KH570, and its consumption is the 1wt% ~ 3wt% of described potassium titanate crystal whisker.
As optimal technical scheme, polymer/metal abrasion-proof self-lubricating composite material provided by the invention, when described polymkeric substance comprises polyoxymethylene, described processing aid also comprises 0.1 ~ 0.3 weight part and inhales aldehyde agent.
On the other hand, two of the object of the invention the production method that a kind of polymer/metal abrasion-proof self-lubricating composite material is provided is.
In order to solve the problems of the technologies described above, the production method of polymer/metal abrasion-proof self-lubricating composite material provided by the invention, described matrix material comprises metal level; The polymer layer engaged with at least one side of described metal level; Crystal whisker of hexa potassium titanate 10 ~ 30 weight part that described polymer layer component at least comprises polymkeric substance 50 ~ 80 weight part, coupling agent treatment is crossed, solid lubricant 10 ~ 20 weight part, processing aid; Described polymkeric substance is the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone; Described solid lubricant at least comprises the one in graphite, molybdenumdisulphide, tetrafluoroethylene; Described processing aid at least comprises 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor; The junction surface of described metal level and polymer layer has at least one straight trough at first direction, and have at least one translot, skewed slot or helix-type flute with the crisscross of described first direction, production process at least comprises the following steps:
A) be hydrolyzed by the coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt%, obtained coupling agent hydrolyzed solution and the even mix of potassium titanate crystal whisker, mixture is dried, and obtains the potassium titanate crystal whisker that coupling agent treatment is crossed;
B) crystal whisker of hexa potassium titanate 10 ~ 30 weight part, solid lubricant 10 ~ 20 weight part and processing aid that polymkeric substance 50 ~ 80 weight part, coupling agent treatment are crossed are prepared burden;
C) adopt mixer batch mixing even, dry being no more than at the temperature of 110 DEG C after mixing;
D) carry out extruding through twin screw, after pelletizing, dry stand-by; Extrusion temperature gets more than the melt temperature of polymeric matrix 20 ~ 40 DEG C, considers its decomposition temperature simultaneously, holds labile polymkeric substance and takes off limit value;
E) metal level processing, is processed into the metalwork meeting desired size and structural requirement;
F) metalwork preheating;
G) load among mould by metalwork, carry out injection molding or mold pressing processing, injection temperature gets more than the melt temperature of polymeric matrix 30 ~ 50 DEG C
H) 50 ~ 60 DEG C, the aftertreatment of 2 ~ 3h is carried out after article removal.
The preheating temperature height of described metalwork is different according to the kind difference of polymeric matrix, and for high crystallinity polymer or high melting temperature polymkeric substance, metalwork preheating temperature is relatively high, otherwise temperature gets lower value.Its objective is the difference in shrinkage compensating and produce because both performance of expanding with heat and contract with cold is different.
Loaded by metalwork among mould, carry out injection molding or mold pressing adds man-hour, injection temperature gets more than the melt temperature of polymeric matrix 30 ~ 50 DEG C, considers the decomposition temperature of polymkeric substance simultaneously, and easy decomposer preferably takes off limit value.
Further, injection temperature also considers that the component of polymer layer is formed simultaneously, when other component concentration outside polymkeric substance is more than 30%, and preferred capping value.
As further improvement opportunity scheme, the production method of described polymer/metal abrasion-proof self-lubricating composite material, when described polymkeric substance comprises polyoxymethylene, described processing aid also comprises 0.1 ~ 0.3 weight part and inhales aldehyde agent.
In addition, three of object of the present invention be to provide a kind of guide bearing.
In order to solve the problems of the technologies described above, guide bearing provided by the invention, described guide bearing comprises outer metal layer; The polymer layer engaged with described metal level internal surface; Described polymer layer component at least comprises polymkeric substance 50 ~ 80 weight part, coupling agent treatment is crossed crystal whisker of hexa potassium titanate 10 ~ 30 weight part, solid lubricant 10 ~ 20 weight part and processing aid; Described polymkeric substance is the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone; Described solid lubricant at least comprises the one in graphite, molybdenumdisulphide, tetrafluoroethylene; Described processing aid at least comprises 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor; The junction surface of described metal level and polymer layer, axially having at least one straight trough, has thread groove at described metal level circumferential direction.
As optimal technical scheme, guide bearing provided by the invention, described polymkeric substance is polyoxymethylene, and described processing aid also comprises 0.1 ~ 0.3 weight part and inhales aldehyde agent, and described guide bearing is applied to middle underloading, middle low speed guide bearing; Be applicable to working temperature lower than the environment of 120 DEG C.
As optimal technical scheme, guide bearing provided by the invention, described polymkeric substance is the mixture of polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone, and described guide bearing is applied to heavy duty, high speed guide bearing; Applicable working temperature is not higher than the environment of 280 DEG C.
The beneficial effect that the present invention brings: the technical scheme that the present invention proposes, the product obtained has the high strength of metal wear resistant material, high rigidity and high heat conduction and supporting capacity, has the wear-resistant and self-lubrication of high molecular abrasion-proof material simultaneously; Compared with coating type high-abrasive material, between matrix material is two-layer, there is solid and reliable interface cohesion.Its production process simple, convenient operation relative to complete processing, mechanization degree is high, constant product quality, and production cost is lower.Matrix material guide bearing tribological property provided by the invention is excellent, can substitute the monoblock type metal of use at present or high molecular abrasion-proof material and for wear-resisting guide bearing, and can realize oil-free lubricatoin, therefore, has environmental friendliness, a feature that using value is given prominence to.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of embodiment guide bearing;
Fig. 2 is the metal-layer structure schematic diagram of embodiment guide bearing;
Fig. 3 is the sectional structure schematic diagram of Fig. 2.
Embodiment
1) polymer/metal abrasion-proof self-lubricating composite material is produced according to the following steps:
A) be hydrolyzed by the different sorts coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt%, obtained coupling agent hydrolyzed solution and the even mix of potassium titanate crystal whisker, mixture is dried, and obtains the potassium titanate crystal whisker that coupling agent treatment is crossed;
If when the polymkeric substance that at least one lubricant 10 ~ 20 weight part among crystal whisker of hexa potassium titanate 10 ~ 30 weight part b) mixture 50 ~ 80 weight part of the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or 50wt% polyphenylene sulfide and 50wt% polyethersulfone, coupling agent treatment crossed, graphite, molybdenumdisulphide, tetrafluoroethylene and 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor are selected is polyoxymethylene, also add 0.1 ~ 0.3 weight part and inhale aldehyde agent, prepare burden;
C) adopt mixer batch mixing even, dry being no more than at the temperature of 110 DEG C after mixing;
D) carry out extruding through twin screw, after pelletizing, dry stand-by; Extrusion temperature gets more than the melt temperature of polymeric matrix 20 ~ 40 DEG C, considers its decomposition temperature simultaneously, holds labile polymkeric substance and takes off limit value;
E) metal level processing, is processed into the metalwork meeting desired size and structural requirement; The junction surface of described metal level and polymer layer has at first direction the straight trough that at least one degree of depth is 0.5 ~ 1.5mm, has with the crisscross of described first direction translot, skewed slot or the helix-type flute that at least one degree of depth is 0.5 ~ 1.5mm;
F) metalwork preheating 0.5 ~ 1 hour at 100 ~ 150 DEG C of temperature; Preheating temperature height is different according to the kind difference of polymeric matrix, for high crystallinity polymer or high melting temperature polymkeric substance, metalwork preheating temperature is relatively high, otherwise temperature gets lower value, its objective is the difference in shrinkage compensating and produce because both performance of expanding with heat and contract with cold is different;
G) load among mould by metalwork, carry out injection molding or mold pressing processing, injection temperature gets more than the melt temperature of polymeric matrix 30 ~ 50 DEG C; Injection temperature considers the decomposition temperature of polymkeric substance simultaneously, and easy decomposer removes the limit; Consider the number of other component in addition to the polymer, other component concentration is in addition to the polymer greater than more than 30% capping simultaneously;
H) 50 ~ 60 DEG C, the aftertreatment of 2 ~ 3h is carried out after article removal.
2) guide bearing is made as stated above, as shown in Figure 1, guide bearing comprises metal level 1, polymer layer 2, the junction surface of metal level 1 and polymer layer 2 has straight trough 3 and thread groove 4(that the degree of depth is 0.5 ~ 1.5mm see Fig. 2 and Fig. 3 at first direction), wherein metal level adds man-hour, as shown in Figures 2 and 3, the metal inner peripheral surface engaged with polymer layer, axially having the straight trough 3 of two symmetries, has thread groove 4 at metal level inner peripheral surface circumferential direction.When described polymkeric substance is polyoxymethylene, obtained guide bearing is applied to middle underloading, middle low speed guide bearing; Be applicable to working temperature lower than the environment of 120 DEG C; Described polymkeric substance is the mixture of polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone, and described guide bearing is applied to heavy duty, high speed guide bearing; Applicable working temperature is not higher than the environment of 280 DEG C.
Embodiment group one: the KH550 coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt% selected by coupling agent, potassium titanate crystal whisker selects crystal whisker of hexa potassium titanate (PTW), and polymkeric substance selects 50 ~ 80 parts by weight of polyoxymethylene.Comparative example 1 is on the basis of embodiment 1, changes the metalwork of the junction surface unslotted using metal level and polymer layer; Metalwork adopts Q235 steel.Obtained product carries out flexural strength by GB/T9341-2008 standard, carry out compressive strength by GB/T1041-2008 standard, carry out modulus E, at 200 rpm variable load by GB/T1041-2008 standard is loaded on melt surface and carries out PV ultimate value, carries out thermal conductivity by GB/T3392-82 standard, carries out working temperature by GB/T1634.2-2004 standard, under 200N, 200rpm, 2h condition, carry out frictional coefficient and abrasion loss test, and experimental conditions is as following table:
Embodiment group two: the KH570 coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt% selected by coupling agent, and potassium titanate crystal whisker selects Potassium Tetratitanate Whisker, polymkeric substance selects 50 ~ 80 weight part polyether-ether-ketones.Comparative example 2 is on the basis of embodiment 4, changes the metalwork of the junction surface unslotted using metal level and polymer layer; Metalwork adopts aluminum.Obtained product carries out flexural strength by GB/T9341-2008 standard, carry out compressive strength by GB/T1041-2008 standard, carry out modulus E, at 200 rpm variable load by GB/T1041-2008 standard is loaded on melt surface and carries out PV ultimate value, carries out thermal conductivity by GB/T3392-82 standard, carries out working temperature by GB/T1634.2-2004 standard, under 200N, 200rpm, 2h condition, carry out frictional coefficient and abrasion loss test, and experimental conditions is as following table:
Embodiment group three: the KH792 coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt% selected by coupling agent, and potassium titanate crystal whisker selects two potassium titanate crystal whiskers, polymkeric substance selects the mixture of 50 ~ 80 weight part 60wt% polyether-ether-ketones and 40wt% polyethersulfone.Comparative example 3 is on the basis of embodiment 7, and change the metalwork of the junction surface unslotted using metal level and polymer layer, metalwork adopts 45 steel.Obtained product carries out flexural strength by GB/T9341-2008 standard, carry out compressive strength by GB/T1041-2008 standard, carry out modulus E, at 200 rpm variable load by GB/T1041-2008 standard is loaded on melt surface and carries out PV ultimate value, carries out thermal conductivity by GB/T3392-82 standard, carries out working temperature by GB/T1634.2-2004 standard, under 200N, 200rpm, 2h condition, carry out frictional coefficient and abrasion loss test, and experimental conditions is as following table:
Embodiment group four: the titanate coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt% selected by coupling agent, potassium titanate crystal whisker selects mixing potassium titanate crystal whisker, and polymkeric substance selects the mixture of 50 ~ 80 weight part 50wt% polyphenylene sulfides and 50wt% polyethersulfone.Comparative example 4 is on the basis of embodiment 10, changes the metalwork of the junction surface unslotted using metal level and polymer layer; Metalwork adopts tinbronze.Obtained product carries out flexural strength by GB/T9341-2008 standard, carry out compressive strength by GB/T1041-2008 standard, carry out modulus E, at 200 rpm variable load by GB/T1041-2008 standard is loaded on melt surface and carries out PV ultimate value, carries out thermal conductivity by GB/T3392-82 standard, carries out working temperature by GB/T1634.2-2004 standard, under 200N, 200rpm, 2h condition, carry out frictional coefficient and abrasion loss test, and experimental conditions is as following table:
Conventional guide bearing material property and acquisition of the present invention and product performance contrast as following table:
Matrix material provided by the invention has excellent performance, and compared with polymer-material wear-resistant guide bearing, it has high strength, high rigidity and high heat conduction and thermal diffusivity, and supporting capacity is large; Compared with the wear-resisting guide bearing of metallic substance, it has excellent wear-resistant self-lubricating performance, and need not be oily, little to mating parts wearing and tearing, bite-resistant, and during motion, noise is little; Compared with the wear-resisting guide bearing of Metal undercoatings polymer, between matrix material guide bearing of the present invention is two-layer, interface cohesion is more solid and reliable, and thickness is unrestricted.
Obviously, the invention is not restricted to above preferred implementation, in the spirit that also can limit in the claims in the present invention and specification sheets, carry out conversion and the improvement of various ways, can same technical problem be solved, and obtain the technique effect of expection, therefore not repeat.Those of ordinary skill in the art can from content disclosed by the invention directly or all schemes associated, as long as within the spirit limited in claim, also belong to protection scope of the present invention.
Claims (7)
1. a production method for polymer/metal abrasion-proof self-lubricating composite material, is characterized in that: described matrix material comprises metal level; The polymer layer engaged with at least one side of described metal level; Crystal whisker of hexa potassium titanate 10 ~ 30 weight part that described polymer layer component comprises polymkeric substance 50 ~ 80 weight part, coupling agent treatment is crossed, solid lubricant 10 ~ 20 weight part, processing aid; Described polymkeric substance is the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone; Described solid lubricant is the one in graphite, molybdenumdisulphide, tetrafluoroethylene; Described processing aid is 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor; The junction surface of described metal level and polymer layer has at least one straight trough at first direction, and have at least one translot, skewed slot or helix-type flute with the crisscross of described first direction, production process comprises the following steps:
A) be hydrolyzed by the coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt%, obtained coupling agent hydrolyzed solution and the even mix of potassium titanate crystal whisker, mixture is dried, and obtains the potassium titanate crystal whisker that coupling agent treatment is crossed;
B) crystal whisker of hexa potassium titanate 10 ~ 30 weight part, solid lubricant 10 ~ 20 weight part and processing aid that polymkeric substance 50 ~ 80 weight part, coupling agent treatment are crossed are prepared burden;
C) adopt mixer batch mixing even, dry being no more than at the temperature of 110 DEG C after mixing;
D) carry out extruding through twin screw, after pelletizing, dry stand-by; Extrusion temperature gets more than the melt temperature of polymeric matrix 20 ~ 40 DEG C, considers its decomposition temperature simultaneously, holds labile polymkeric substance and takes off limit value;
E) metal level processing, is processed into the metalwork meeting desired size and structural requirement;
F) metalwork preheating;
G) load among mould by metalwork, carry out injection molding or mold pressing processing, injection temperature gets more than the melt temperature of polymeric matrix 30 ~ 50 DEG C;
H) 50 ~ 60 DEG C, the aftertreatment of 2 ~ 3h is carried out after article removal.
2. the production method of polymer/metal abrasion-proof self-lubricating composite material according to claim 1, is characterized in that: the degree of depth of described straight trough, translot or skewed slot is 0.5 ~ 1.5mm.
3. the production method of polymer/metal abrasion-proof self-lubricating composite material according to claim 1, is characterized in that: described coupling agent is KH550 or KH570.
4. the production method of polymer/metal abrasion-proof self-lubricating composite material according to claim 1, is characterized in that: when described polymkeric substance comprises polyoxymethylene, and described processing aid also comprises 0.1 ~ 0.3 weight part and inhales aldehyde agent.
5. a guide bearing, described guide bearing comprises outer metal layer; The polymer layer engaged with described metal level internal surface; Described polymer layer component comprises polymkeric substance 50 ~ 80 weight part, coupling agent treatment is crossed crystal whisker of hexa potassium titanate 10 ~ 30 weight part, solid lubricant 10 ~ 20 weight part and processing aid; Described polymkeric substance is the mixture of polyoxymethylene, polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone; Described solid lubricant is the one in graphite, molybdenumdisulphide, tetrafluoroethylene; Described processing aid is 0.1 ~ 0.3 parts per weight dispersing agent, 0.1 ~ 0.3 weight part oxidation inhibitor; The junction surface of described metal level and polymer layer axially has at least one straight trough, and have thread groove at described metal level circumferential direction, it is characterized in that, described guide bearing is obtained by following steps:
A) be hydrolyzed by the coupling agent of potassium titanate crystal whisker 1wt% ~ 3wt%, obtained coupling agent hydrolyzed solution and the even mix of potassium titanate crystal whisker, mixture is dried, and obtains the potassium titanate crystal whisker that coupling agent treatment is crossed;
B) crystal whisker of hexa potassium titanate 10 ~ 30 weight part, solid lubricant 10 ~ 20 weight part and processing aid that polymkeric substance 50 ~ 80 weight part, coupling agent treatment are crossed are prepared burden;
C) adopt mixer batch mixing even, dry being no more than at the temperature of 110 DEG C after mixing;
D) carry out extruding through twin screw, after pelletizing, dry stand-by; Extrusion temperature gets more than the melt temperature of polymeric matrix 20 ~ 40 DEG C, considers its decomposition temperature simultaneously, holds labile polymkeric substance and takes off limit value;
E) metal level processing, is processed into the metalwork meeting desired size and structural requirement;
F) metalwork preheating;
G) load among mould by metalwork, carry out injection molding or mold pressing processing, injection temperature gets more than the melt temperature of polymeric matrix 30 ~ 50 DEG C;
H) 50 ~ 60 DEG C, the aftertreatment of 2 ~ 3h is carried out after article removal.
6. guide bearing according to claim 5, is characterized in that: described polymkeric substance is polyoxymethylene, and described processing aid also comprises 0.1 ~ 0.3 weight part and inhales aldehyde agent, and described guide bearing is applied to middle underloading, middle low speed guide bearing; Be applicable to working temperature lower than the environment of 120 DEG C.
7. guide bearing according to claim 5, it is characterized in that: described polymkeric substance is the mixture of polyether-ether-ketone, 60wt% polyether-ether-ketone and 40wt% polyethersulfone or the mixture of 50wt% polyphenylene sulfide and 50wt% polyethersulfone, and described guide bearing is applied to heavy duty, high speed guide bearing; Applicable working temperature is not higher than the environment of 280 DEG C.
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| CN105020267B (en) * | 2015-08-10 | 2017-09-19 | 大连三环复合材料技术开发股份有限公司 | Core main pump water lubrication composite material thrust bearing |
| JP6405063B2 (en) | 2015-08-10 | 2018-10-17 | 大連三環複合材料技術開発股▲ふん▼有限公司 | Water-lubricated composite thrust bearing for nuclear main pump |
| CN105542388A (en) * | 2015-11-03 | 2016-05-04 | 南京肯特复合材料有限公司 | Potassium titanate whisker reinforced PEEK/PTFE composite material and preparation method thereof |
| CN106751443B (en) * | 2016-11-23 | 2019-02-22 | 大连路阳科技开发有限公司 | The corrosion-resistant friction-resistant composite material of metallic plastic-lining and preparation method and application |
| CN106674885A (en) * | 2016-12-23 | 2017-05-17 | 张家港大塚化学有限公司 | Method for preparing potassium hexatitanate crystal whisker reinforced composite material |
| CN107603137A (en) * | 2017-10-18 | 2018-01-19 | 扬州大学 | A kind of semiconductive Polyether-ether-ketocable cable material and preparation method thereof |
| CN107893849B (en) * | 2017-12-20 | 2023-09-12 | 山东天瑞重工有限公司 | Hydraulic rock drill piston and manufacturing method thereof |
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